CN110317502A - A kind of aqueous wooden ware seal coat and preparation method thereof - Google Patents

Abstract

The invention discloses a water-based wood sealing primer and a preparation method thereof. In terms of weight percentage, the components and contents of the sealing primer are as follows: cationic monomer modified water-based acrylic emulsion 30-50%, water-based self-crosslinking acrylic emulsion 20-40%, titanium dioxide 5-10%, internal crosslinking 0.2-2% of anti-bleeding additives, 0.5-3.5% of anti-bleeding additives, 1-3% of grinding aids, 2-6% of film-forming aids, 10-25% of water, and 0.5-3% of additives. The present invention adopts the water-based acrylic emulsion modified by cationic monomer as the main film-forming substance, supplemented by water-based self-crosslinking acrylic emulsion for blending modification, and then mixes with titanium dioxide, anti-bleeding additives and other conventional additives , prepared by dispersing and stirring, the prepared water-based wood sealing primer has the advantages of good storage stability, good sanding performance, excellent anti-bleeding color, and convenient construction.

Description

A kind of water-based wood sealing primer and preparation method thereof

technical field

The invention relates to the field of water-based wood coatings, in particular to a water-based wood sealing primer suitable for coating various wood substrates and a preparation method thereof.

Background technique

Due to the wide variety of wood substrates covered in wood coating, the main commonly used wood includes beech, oak, ash, pine, birch, maple, cherry wood, black walnut and other natural sawn timber, as well as density board, plywood and Wood-based panels such as particle board, etc. As the wood itself, its chemical composition is extremely complex. The average content of the basic elements of dry wood is: carbon 50%, hydrogen 6.4%, oxygen 42.6%, nitrogen 1%. The main components include cellulose, hemicellulose, lignin and wood extracts (tannic acid, oil, essence, pigment, alkaloid, etc.). Due to the presence of wood extracts, the cell cavity of wood usually contains resins, gums, tannins, pigments, volatile oils, water and other substances. If the wood primer has a poor sealing effect on wood, it is easy to cause paint Defects such as film spit oil, discoloration, etc.

Earlier, the industry generally adopted two methods for the problem of substrate bleeding: one is to use a cationic emulsion designed with a special molecular structure as a film-forming substance to prepare a water-based sealing primer, and the other is to directly apply it to a conventional water-based wood clear Anti-tannic acid additives are added to the primer formula (such additives usually contain water-soluble compounds containing aluminum, magnesium, zirconium, and zinc, which can form metal complex salts with wood pigments, tannic acid, etc., and deposit on The bottom layer of the paint film will no longer migrate), thus playing a certain bleeding and sealing effect. Chinese invention patent CN 103642342B uses cationic emulsion with good anti-bleeding effect and anti-bleeding additive with excellent metal complexing ability to play a synergistic effect on this basis. It uses water-based cationic acrylic emulsion and water-based cationic modified acrylic acid copolymer A mixture of one or more than two kinds of dispersions or water-based cationic epoxy resin ester emulsions is used as the main film-forming substance of the coating, supplemented by zirconium acetate, 20wt% aqueous solution of magnesium chloride, aluminum-zirconium coupling agent, and hydroxyl chloride Aluminum, 20wt% zirconium sulfate aqueous solution, 20wt% zinc sulfate aqueous solution, or a mixture of more than two kinds of titanate coupling agents are used as anti-bleeding additives to prepare a water-based anti-bleeding woodware that can be stored stably Transparent primer. However, this kind of cationic sealing primer is often incompatible with water-based wood coatings prepared with conventional anionic water-based acrylic emulsions, and special equipment must be prepared in product development, production and downstream construction applications, otherwise slag will easily appear , gel, or even completely block the spraying system and scrap it. At the same time, there are disadvantages such as slow hardness build-up, poor polishing, and inability to stack for a long time after construction. The risk of cracking in the late stage of the solid color coating process is brought about by large.

Chinese patent CN 105295607 A uses hydrophilic modified aromatic polyisocyanate and anionic acrylic acid emulsion or modified acrylic polymer emulsion to prepare water-based wood sealing primer, and also Chinese patent CN105602377 A uses water-based HDI trimer and The water-based hydroxyl acrylic emulsion undergoes a chemical cross-linking reaction and fully exerts its sealing performance in the presence of a tannic acid inhibitor. This method can even play an excellent sealing effect on substrates with heavy oil and pigment content (such as black walnut, sapele, rubber wood, red oak), but because this type of product is a two-component system, that is, two It needs to be used by the painter before construction and then mixed according to a certain proportion before use. Compared with conventional one-component products, it is inconvenient to use, and the pot life is shorter due to the addition of curing agent. It is not popular in the market to manually calculate the amount of paint and adjust the paint to avoid waste.

Chinese patent CN 105647309 A adopts imidization SMA modification to prepare water-based cationic acrylic emulsion and then prepares water-based sealing primer. This patent overcomes the common problems of low hardness and poor sanding performance of the aforementioned cationic emulsion. It retains the advantages of good anti-bleeding and sealing properties inherent in cationic emulsions, but due to the compatibility between cationic products and anionic water-based wood coatings, special tank production is required, and a special spraying system is required, and the market application is limited .

In addition, since the existing technology generally adopts the development of water-based wood sealing and transparent primers, when the wood with deep duct lines is painted white, it is easy to cause the white paint to be difficult to enter the ducts, and black hole-like pinholes are likely to appear after painting. Sometimes it needs several times of strict and meticulous grinding and spraying in the follow-up to eliminate it; however, even if more anti-bleeding additives are added to the conventional white primer to act as a sealing primer, bleeding will inevitably occur. Therefore, need to seek a kind of new water-based wood sealing primer formula, possess more excellent workability while realizing the long-lasting and effective anti-bleeding color sealing effect to various substrates.

Contents of the invention

The object of the present invention is to overcome the problems existing in the prior art, and to provide a water-based wood sealing primer and a preparation method thereof. The water-based wood sealing primer provided by the present invention overcomes the shortcomings of the traditional cationic water-based wood sealing primer such as low hardness, poor sanding performance, and inconvenient construction, and does not need to use two-component post-addition of polyisocyanate, which is a good solution to the current water-based wood sealing primer. The anti-bleeding performance and construction convenience of the sealer primer are contradictory.

Since the water-based acrylic emulsion modified by cationic monomers is used as the main film-forming material, the mixed anionic water-based self-crosslinking acrylic emulsion will not cause incompatibility between anionic and cationic emulsions Therefore, the water-based wood sealing primer provided by the present invention will not have quality accidents such as demulsification gel or spray gun clogging in the production process and downstream application process, and self-crosslinking after mixing The acrylic emulsion can significantly improve the hardness and sandability of the cationic monomer-modified water-based acrylic emulsion. At the same time, under the synergistic metal complexing effect of the resin cationic structural unit in the sealing primer, the anti-bleeding additive and the aluminum (or zirconium) element on the surface of the rutile titanium dioxide, the paint film is endowed with excellent early anti-corrosion properties. Bleeding. In addition, the internal crosslinking agent added in the system, that is, the epoxy-based polysiloxane oligomer, can slowly cross-link with the -COOH in the acrylic emulsion during the drying and curing process of the paint film, thereby improving the final paint film. Cross-link density and water resistance, preventing late exudation of hydrophilic pigments in wood.

The technical scheme adopted to realize the object of the present invention is:

A kind of water-based wood sealing primer, by weight percentage, component and content are as follows:

Described cationic monomer modified water-based acrylic emulsion is the water-based acrylic emulsion that shows anionic characteristics as a whole after being modified by cationic monomer;

The water-based self-crosslinking acrylic emulsion is an anionic water-based self-crosslinking acrylic emulsion with a minimum film-forming temperature between 30°C and 50°C;

The titanium dioxide is rutile titanium dioxide whose surface is modified by aluminum or zirconium;

The internal crosslinking agent is polysiloxane oligomer with epoxy functional group;

The anti-bleeding auxiliary agent is an aqueous solution of a coordination compound containing aluminum, magnesium, zirconium or zinc;

The auxiliary agent is more than four kinds of pH regulator, defoamer, thickener, emulsifier, substrate wetting agent and bactericide.

In order to further realize the object of the present invention, preferably, the described cationic monomer modified aqueous acrylic emulsion is Joncryl 8227 of BASF, Wanhua Chemical Co., Ltd. One or more of 4312, ECS-4907 of Zhongshan Yisike Company and HG-4810 produced by Carpoly Company.

Preferably, the water-based self-crosslinking acrylic emulsion is Wanhua Chemical Co., Ltd. 4501, One or more of 4401, ROSHIELD 3311 from Dow, Joncryl 8330 from BASF, and Setaqua 6718 from Nupace.

Preferably, the titanium dioxide described is the CR-826 of Tenuo Company, the R-900, R-902+, Ningbo Xinfu NTR-606 and Lomon Billions One or more of BLR-895.

Preferably, the internal crosslinking agent is Evonik Industrial Group's One or more of HYDROSIL 2926, Coatosil 2287 and MP200 of Momentive Company of the United States.

Preferably, the anti-bleeding additive is one or more of L-44, L-66 and L-77 of Halox Company in the United States.

Preferably, the grinding aid is a grinding powder or a grinding slurry containing zinc stearate or calcium stearate compound; the film-forming aid is an alcohol ether organic solvent.

Preferably, the grinding aid is one or more of the MJ-555 of Housheng Chemical Industry, the Hydropalat SL3697 of BASF and the SAK-ZS-PLB of Singapore Sanyi Chemical; the film-forming aid is One or more of propylene glycol methyl ether, propylene glycol butyl ether, dipropylene glycol methyl ether and dipropylene glycol butyl ether.

Preferably, as a percentage of the total mass of raw materials, the amount of the auxiliary agent is as follows:

The pH regulator is an organic amine compound;

Described defoamer is organosilicon type defoamer;

The thickener is an associative polyurethane thickener;

Described emulsifying agent is nonionic surfactant;

The substrate wetting agent is a polyether modified polysiloxane wetting agent;

The fungicide is a biocide containing isothiazolinones.

The pH regulator is an organic amine compound, particularly preferably triethylamine (TEA), N,N-dimethylethanolamine (DMEA), 2-amino-2-methyl-1-propanol (AMP- 95) in one or more;

The defoamer is a silicone defoamer, particularly preferably BYK-024, BYK-028, BYK-093 of German BYK company, TEGO-810, TEGO-822, TEGO-902W of Evonik Industrial Group , one or more of TEGO-904W;

The thickener is an associative polyurethane thickener, particularly preferably one or more of Evonik's associative polyurethane thickeners ViscoPlus 3000, ViscoPlus 3030, and ViscoPlus 3060;

Described emulsifying agent is nonionic surfactant, is particularly preferably one or more in the EnviroGem AD01 of BD-405, EH-9 of Dow Company, Evonik Industrial Group;

The substrate wetting agent is polyether modified polysiloxane wetting agent, especially preferably Tego-245, Tego-270, Twin-4100 of Evonik Industrial Group, BYK-346 of BYK, One or more of BYK-333;

The fungicide is an isothiazolinone-containing biocide, particularly preferably one or more of Bioban586, Skane M8 from Dow, Defros CP62 and Defros M11S from Hoffman.

The preparation method of described water-based wood sealing primer, comprises the steps:

1) Add water-based self-crosslinking acrylic emulsion into container 1, start stirring at low speed, add pH regulator, defoamer and 0-15% water, keep stirring at low speed for 5-8 minutes, adjust the speed to high speed stirring, add titanium dioxide , keep stirring at high speed;

2) Add the film-forming aid and the remaining water into the container 2, adjust the speed to high speed and keep stirring at a high speed for 20-30 minutes, then stop stirring to obtain the film-forming aid pre-dispersion, and add the film-forming aid pre-dispersion to the container 1;

3) Adjust the stirring speed in container 1 to medium speed stirring, add cationic monomer modified water-based acrylic emulsion, internal crosslinking agent, anti-bleeding aid, polishing aid, substrate wetting agent and bactericide in sequence, keep After stirring at a medium speed, filter to obtain a water-based wood sealing primer;

The rotating speeds of the low-speed stirring, medium-speed stirring and high-speed stirring are respectively 300-500r/min, 800-1000r/min and 1200-1500r/min.

Preferably, adding the pH regulator, defoamer and 0-15% of water in step 1) also includes adding 0-0.4% of thickener; the rest of the thickener is added during step 3); Step 2) said adding film-forming aid and remaining water into container 2 also includes adding emulsifier; step 1) said time of keeping high-speed stirring is 10-15min; step 2) described film-forming It takes 10-15 minutes for the additive pre-dispersion to be added to container 1; the time for maintaining medium-speed stirring in step 3) is 8-10 minutes; the filter is filtered through 240# filter cloth.

Compared with the prior art, the present invention has the following advantages:

1) The present invention uses water-based acrylic emulsion modified by cationic monomers but still showing anionic characteristics as a main film-forming material, supplemented by water-based acrylic emulsion with a minimum film-forming temperature (MFFT) between 30°C and 50°C. The cross-linked acrylic emulsion is blended and modified, so that the final sealed primer has excellent storage stability, good sanding and hardness building speed.

2) The water-based wood sealing primer prepared by the present invention has a cationic structural unit, an anti-bleeding auxiliary agent and the aluminum (or zirconium) element on the surface of the rutile titanium dioxide powder in the film-forming resin. Endows the paint film with excellent early anti-bleeding effect.

3) The water-based wood sealing primer provided by the present invention adds an internal crosslinking agent with epoxy functional groups to the system, and the internal crosslinking agent can slowly interact with the remaining hydrophilic groups in the acrylic emulsion during the drying and curing process of the paint film -COOH undergoes a cross-linking reaction, thereby increasing the final cross-linking density and water resistance of the paint film, and effectively preventing the late exudation of the hydrophilic pigment in the wood.

4) The water-based wood sealing primer provided by the present invention finally presents a translucent white coating effect. After the first construction, the white pigment in the paint effectively penetrates into the wood conduit, and after recoating the next water-based white primer, it presents a semi-transparent coating effect. The overall effect is a uniform white coating. However, the construction of traditional transparent sealing primer is easy to cause the hydrophobicity caused by the transparent sealing primer flowing into the depth of the wood conduit and cannot be fully polished. In this way, black hole-like needles will inevitably appear after the next application of water-based white primer. hole problem. Therefore, the use of the water-based wood sealing primer provided by the present invention can effectively reduce the strict grinding and multiple rework and recoating processes caused by the black hole-like pinhole problem, the construction convenience is higher, and the labor cost of painting can be significantly saved .

Detailed ways

In order to better understand the present invention, the present invention will be further described below in conjunction with the examples, but the embodiments of the present invention are not limited thereto.

Example 1

1. Water-based wood sealing primer, calculated by important percentage:

Table 1a Components and content of water-based wood sealer primer

2. The preparation method of water-based wood sealing primer

(1) Add water-based self-crosslinking acrylic emulsion ROSHIELD 3311 into container 1 with stirring device, start stirring at a low speed of 400rpm, add pH regulator AMP-95, defoamer Tego-810, and 0.1 part of thickener Tego -3030 and 0.85 water, keep stirring at a low speed for 5 minutes, then adjust the speed to a high speed of 1500rpm, add titanium dioxide CR-826, and keep stirring at a high speed for 15 minutes;

(2) Take another set of container 2 with stirring device, add dipropylene glycol butyl ether, dipropylene glycol methyl ether, emulsifier BD-405 and 10 parts of water in sequence, adjust the speed to 1500rpm at high speed and keep stirring at high speed for 25 minutes, then stop stirring Obtain the film-forming aid pre-dispersion liquid, then slowly add this film-forming aid pre-dispersion liquid in the container 1, and control the duration from the beginning of adding to the completion of adding to be 10min;

(3) Adjust the stirring speed in container 1 to medium speed 1000rpm, add cationic monomer modified water-based acrylic emulsion ECS-4907, internal crosslinking agent Coatosil 2287, anti-bleeding additive L-44, grinding aid SAK- ZS-PLB, substrate wetting agent Tego-4100, fungicide Bioban 586, Defros M11S, the remaining thickener Tego-3030, keep stirring at a medium speed for 8 minutes, then filter through a 240# filter cloth to obtain a water-based wood sealing primer .

3. Comprehensive performance of water-based wood sealing primer

The above-mentioned water-based wood sealer made above is carried out according to GB/T 23999 (D) to carry out various performance tests, and the results are shown in Table 1b for comprehensive performance:

Table 1b Comprehensive properties of water-based wood sealer primer

As can be seen from the above table, the overall performance of the water-based wood sealing primer obtained in this embodiment is better than that of the national standard GB/T23999 (D)-2009, and its storage stability and sanding properties have reached the performance of conventional water-based clear primers standard.

The water-based wood sealing primer obtained in this embodiment is tested for anti-bleeding properties of various dark substrates. The test process is: substrate sanding (240# sandpaper deburring, dust removal)→spraying of water-based wood sealing primer (Uniform spraying)→Drying (drying at 30～40℃ for 2h)→Grinding the primer (320# sandpaper to deburr and thoroughly remove dust)→Spraying conventional water-based anionic acrylic emulsion system white primer (uniform spraying)→Drying (30～ Dry at 40°C for 2 hours, then turn to room temperature and wait for 16 hours) → to be tested.

Use a spectrophotometer to test the above test plate and record the initial value of the color, then place the test plate at 25°C for 1d, 7d, 30d and at 50°C for 1d, 3d, 7d, record the respective The color difference change values are summarized in Table 1c below:

Table 1c water-based wood sealing primer anti-bleeding color data ΔE* value

As can be seen from the above table data, the performance indicators of the water-based sealing primer of this embodiment reach and are better than the national standard GB/T 23999 (D), and have good storage stability, good sanding performance, excellent anti-bleeding color, and excellent construction performance. Convenience and other advantages, it shows excellent anti-bleeding effect on a variety of substrates, whether it is in a normal temperature environment of 25°C or a high temperature environment of 50°C, its anti-bleeding performance basically disappears over time. Great changes occur, indicating that the water-based sealing primer prepared in this embodiment has a good late-stage anti-bleeding color sealing effect. This is because: the water-based sealing primer of this example uses the water-based acrylic emulsion ECS-4907 modified by some cationic monomers as the main film-forming substance, and at the same time, it is blended and modified with the water-based self-crosslinking acrylic emulsion ROSHIELD 3311, and added The surface is prepared by rutile titanium dioxide CR826 and anti-bleeding additive L-44 modified by aluminum (or zirconium) elements. The paint film formed by the final construction of the sealing primer of this embodiment has cationic structural units due to the film-forming resin , anti-bleeding additives, and aluminum (or zirconium) elements on the surface of the rutile titanium dioxide body play a synergistic metal complexation, endowing the paint film with excellent early anti-bleeding effect; Take the anti-bleeding data on billy wood as an example. After the painting is completed, the initial color difference measured by the spectrophotometer is 0.21. During the subsequent placement on the test substrate, this value only slightly increases. Specifically It is shown as 0.26 for 7 days and 30 days at room temperature. Even if it is placed in 50 ℃ artificial acceleration test for 7 days (the industry default is equivalent to 1 year in daily use environment), it is only 0.26, while the blank sample has increased significantly from 5.42 to 9.81. This illustrates that the embodiment of the present invention can effectively prevent the late-stage exudation of the hydrophilic pigment in wood. This is due to the addition of the internal crosslinking agent Coatosil 2287 with epoxy functional groups in this embodiment, which can be used in the drying and curing process of the paint film. Slowly cross-linking with the residual hydrophilic group -COOH in the acrylic emulsion.

The same spraying equipment system was used in the test process of the anti-bleeding coating in this embodiment. After spraying the water-based wood sealing primer provided in this embodiment, there is no need to replace the spraying equipment system, and only need to be cleaned with tap water. Putting it into the spraying construction of other water-based products, there will be no risk of the spraying system being blocked and scrapped, so as to solve the construction convenience problem brought by the water-based cationic sealing primer provided in the Chinese invention patent CN103642342B at the source.

Example 2

1. Water-based wood sealing primer, calculated by important percentage:

Table 2a Components and content of water-based wood sealer primer

2. The preparation method of water-based wood sealing primer

(1) Add the water-based self-crosslinking acrylic emulsion Setaqua 6718 into the container 1 with a stirring device, turn on the low-speed stirring at 300rpm, and then add the pH regulator DMEA, the defoamer BYK-028, and 0.1 part of the thickener Tego-3060 , keep stirring at a low speed for 5 minutes, then adjust the speed to a high speed of 1200rpm, add titanium dioxide R-900, keep stirring at high speed for 10 minutes;

(2) Take another set of container 2 with a stirring device, add dipropylene glycol butyl ether, dipropylene glycol methyl ether and 10 parts of water in sequence, adjust the rotating speed to a high speed of 1200rpm and keep stirring at a high speed for 20min, then stop stirring to obtain a film-forming aid preparation Dispersion liquid, then this film-forming aid pre-dispersion liquid is slowly added in container 1, and the duration of control from beginning to adding to adding is 10min;

(3) Adjust the stirring speed in container 1 to a medium speed of 800rpm, and then add cationic monomer-modified water-based acrylic emulsion Joncryl 8227 and internal crosslinking agent in sequence HYDROSIL 2926, anti-bleeding additive L-66, grinding aid MJ-555, substrate wetting agent BYK-346, fungicide Defros CP62, Skane M8, the remaining thickener Tego-3060, keep stirring at medium speed After 10 minutes, filter through 240# filter cloth to obtain the water-based wood sealing primer.

3. Comprehensive performance of water-based wood sealing primer

The water-based wood sealer made above is tested according to GB/T 23999 (D), and the results are shown in Table 2b for comprehensive performance:

Table 2b Comprehensive performance of water-based wood sealer primer

Test items Waterborne wood sealer primer Compared with standard requirements testing method state in container No abnormality No hard lumps after mixing GB/T 23999-2009 Coating Appearance Coating film appearance is normal - GB/T 23999-2009 Non-volatile matter/% 37 ≥30 GB/T1725-2007 Surface dry time/min 25 ≤30 GB/T 1728-1979 surface dry B method Working time/h 4 ≤6 GB/T 1728-1979 Hard Work A Method Storage stability (50℃, 7d) No abnormality and no obvious post-thickening No abnormality GB/T 23999-2009 Grinding Easy to sand and non-stick sandpaper Easy to polish GB/T 23999-2009 Adhesion/level 0 ≤1 GB/T9286-1998

As can be seen from the above table, the overall performance of the water-based wood sealing primer prepared in this embodiment is better than that of the national standard GB/T23999 (D)-2009, and its storage stability and sanding properties have reached the performance of conventional water-based clear primers standard.

The water-based wood sealing primer obtained in this embodiment is tested for anti-bleeding properties of various dark-colored substrates. The test process is: substrate sanding (240# sandpaper deburring, thorough dust removal) → spraying water-based wood sealing primer (Uniform spraying)→Drying (drying at 30～40℃ for 2h)→Grinding the primer (320# sandpaper to deburr and thoroughly remove dust)→Spraying conventional water-based anionic acrylic system white primer (uniform spraying)→Drying (30～40 ℃ drying for 2 hours, then turn to room temperature to dry for 16 hours) → to be tested.

Use a spectrophotometer to test the above test plate and record the initial color value, then place the test plate at 25°C for 1d, 7d, 30d and at 50°C for 1d, 3d, 7d, record the respective The color difference change values are summarized in Table 2c below:

Table 2c water-based wood sealing primer anti-bleeding color data ΔE* value

Example 3

1. Water-based wood sealing primer, calculated by important percentage:

Table 3a Components and content of water-based wood sealer primer

2. The preparation method of water-based wood sealing primer

(1) Water-based self-crosslinking acrylic emulsion Add 4401 into container 1 with a stirring device, start stirring at a low speed of 500rpm, add pH regulator TEA and defoamer TEGO-902W in turn, keep stirring at a low speed for 8 minutes, adjust the speed to a high speed of 1500rpm, add titanium dioxide Ningbo Xinfu NTR-606 , keep stirring at high speed for 15 minutes;

(2) Take another set of container 2 with a stirring device, add dipropylene glycol butyl ether and 10 parts of water in sequence, adjust the rotating speed to a high speed of 1200rpm and keep stirring at a high speed for 30min, then stop stirring to obtain a pre-dispersion of the film-forming aid, and then slowly This film-forming aid pre-dispersion liquid is added in the container 1, and the duration of control from beginning to adding to adding is 15min;

(3) Adjust the stirring speed in container 1 to a medium speed of 900rpm, and add cationic monomer modified water-based acrylic emulsion in turn 4312, internal crosslinking agent MP200, anti-bleeding additive L-77, grinding aid Hydropalat SL 3697, substrate wetting agent Tego-270, fungicide Bioban 586, Skane M8, keep stirring at a medium speed for 9 minutes and then pass through 240# The water-based wood sealing primer is obtained by filtering with a filter cloth.

3. Comprehensive performance of water-based wood sealing primer

The water-based wood sealer made above is carried out according to GB/T 23999 (D) to carry out various performance tests, and the results are shown in Table 3b for comprehensive performance:

Table 3b Comprehensive performance of water-based wood sealer primer

Test items Waterborne wood sealer primer Compared with standard requirements testing method state in container No abnormality No hard lumps after mixing GB/T 23999-2009 Coating Appearance Coating film appearance is normal - GB/T 23999-2009 Non-volatile matter/% 35 ≥30 GB/T1725-2007 Surface dry time/min 25 ≤30 GB/T 1728-1979 surface dry B method Working time/h 4 ≤6 GB/T 1728-1979 Hard Work A Method Storage stability (50℃, 7d) No abnormality and no obvious post-thickening No abnormality GB/T 23999-2009 Grinding Easy to sand and non-stick sandpaper Easy to polish GB/T 23999-2009 Adhesion/level 0 ≤1 GB/T9286-1998

As can be seen from the above table, the overall performance of the water-based wood sealing primer obtained in this embodiment is better than that of the national standard GB/T23999 (D)-2009, and its storage stability and sanding properties have reached the performance of conventional water-based clear primers standard.

The water-based wood sealing primer obtained in this embodiment is tested for anti-bleeding properties of various dark substrates. The test process is: substrate sanding (240# sandpaper deburring, dust removal)→spraying of water-based wood sealing primer (uniform spraying)→drying (drying at 30～40℃ for 2h)→primer grinding (320# sandpaper to deburr, thoroughly dust removal)→spraying conventional water-based anionic acrylic system white primer (uniform spraying)→drying (30～40 ℃ drying for 2 hours, then turn to room temperature to dry for 16 hours) → to be tested.

Use a spectrophotometer to test the above test plate and record the initial value of the color, then place the test plate at 25°C for 1d, 7d, 30d and at 50°C for 1d, 3d, 7d, record the respective The color difference change values are summarized in Table 3c below:

Table 3c water-based wood sealing primer anti-bleeding color data ΔE* value

Example 4

1. Water-based wood sealing primer, calculated by important percentage:

Table 4a Components and content of water-based wood sealer primer

2. The preparation method of water-based wood sealing primer

(1) Add the aqueous self-crosslinking acrylic emulsion Joncryl 8330 into the container 1 with a stirring device, start stirring at a low speed of 500rpm, add the pH regulator AMP-95, the defoamer TEGO-822 and 15 parts of water in sequence, and keep the low speed After stirring for 8 minutes, adjust the rotation speed to a high speed of 1500rpm, and add titanium dioxide For BLR-895, keep stirring at high speed for 15 minutes;

(2) Take another set of container 2 with stirring device, add dipropylene glycol butyl ether, dipropylene glycol butyl ether, emulsifier EH-9 and 10 parts of water in sequence, adjust the speed to 1200rpm at high speed and keep stirring at high speed for 30 minutes, then stop stirring Obtain the film-forming aid pre-dispersion liquid, then slowly add this film-forming aid pre-dispersion liquid in the container 1, control from beginning to add to the duration of adding is 15min;

(3) Adjust the stirring speed in container 1 to a medium speed of 900rpm, and add cationic monomer modified water-based acrylic emulsion HG-4810 and internal crosslinking agent in sequence HYDROSIL 2926, anti-bleeding additive L-44, grinding aid HydropalatSL 3697, substrate wetting agent BYK-333, fungicide Bioban 586, Skane M8, keep stirring at a medium speed for 8 minutes and filter through 240# filter cloth to obtain water-based Wood sealer primer.

3. Comprehensive performance of water-based wood sealing primer

The water-based wood sealer made above is carried out according to GB/T 23999 (D) to carry out various performance tests, and the results are shown in Table 4b for comprehensive performance:

Table 4b Comprehensive properties of water-based wood sealer primer

Test items Waterborne wood sealer primer Compared with standard requirements testing method state in container No abnormality No hard lumps after mixing GB/T 23999-2009 Coating Appearance Coating film appearance is normal - GB/T 23999-2009 Non-volatile matter/% 32.8 ≥30 GB/T1725-2007 Surface dry time/min 25 ≤30 GB/T 1728-1979 surface dry B method Working time/h 4 ≤6 GB/T 1728-1979 Hard Work A Method Storage stability (50℃, 7d) No abnormality and no obvious post-thickening No abnormality GB/T 23999-2009 Grinding Easy to sand and non-stick sandpaper Easy to polish GB/T 23999-2009 Adhesion/level 0 ≤1 GB/T9286-1998

As can be seen from the above table, the overall performance of the water-based wood sealing primer obtained in this embodiment is better than that of the national standard GB/T23999 (D)-2009, and its storage stability and sanding properties have reached the performance of conventional water-based clear primers standard.

The water-based wood sealing primer obtained in this embodiment is tested for anti-bleeding properties of various dark substrates. The test process is: substrate sanding (240# sandpaper deburring, dust removal)→spraying of water-based wood sealing primer (uniform spraying)→drying (drying at 30～40℃ for 2h)→primer grinding (320# sandpaper to deburr, thoroughly dust removal)→spraying conventional water-based anionic acrylic system white primer (uniform spraying)→drying (30～40 ℃ drying for 2 hours, then turn to room temperature to dry for 16 hours) → to be tested.

Use a spectrophotometer to test the above test plate and record the initial value of the color, then place the test plate at 25°C for 1d, 7d, 30d and at 50°C for 1d, 3d, 7d, record the respective The color difference change values are summarized in Table 4c below:

Table 4c water-based wood sealing primer anti-bleeding color data ΔE* value

Example 5

1. Water-based wood sealing primer, calculated by important percentage:

Table 5a Components and content of water-based wood sealer primer

2. The preparation method of water-based wood sealing primer

(1) Water-based self-crosslinking acrylic emulsion Add 4501 into container 1 with stirring device, turn on low-speed stirring at 500rpm, add pH regulator AMP-95, defoamer TEGO-822 and 15 parts of water in sequence, keep stirring at low speed for 8 minutes, adjust the speed to high speed 1500rpm, add titanium white powder BLR-895, keep stirring at high speed for 15 minutes;

(2) Take another set of container 2 with stirring device, add dipropylene glycol butyl ether, dipropylene glycol butyl ether, emulsifier EH-9 and 10 parts of water in sequence, adjust the speed to 1200rpm at high speed and keep stirring at high speed for 30 minutes, then stop stirring Obtain the film-forming aid pre-dispersion liquid, then slowly add this film-forming aid pre-dispersion liquid in the container 1, control from beginning to add to the duration of adding is 15min;

(3) Adjust the stirring speed in container 1 to a medium speed of 900rpm, and add cationic monomer modified water-based acrylic emulsion HG-4810 and internal crosslinking agent in sequence HYDROSIL 2926, anti-bleeding additive L-44, grinding aid HydropalatSL 3697, substrate wetting agent BYK-333, fungicide Bioban 586, Skane M8, keep stirring at a medium speed for 8 minutes and filter through 240# filter cloth to obtain water-based Wood sealer primer.

3. Comprehensive performance of water-based wood sealing primer

The above-mentioned water-based wood sealing primer made above is carried out according to GB/T 23999 (D) to carry out various performance tests, and the results are shown in Table 5b for comprehensive performance:

Table 5b Comprehensive performance of water-based wood sealing primer

As can be seen from the above table, the overall performance of the water-based wood sealing primer obtained in this embodiment is better than that of the national standard GB/T23999 (D)-2009, and its storage stability and sanding properties have reached the performance of conventional water-based clear primers standard.

The water-based wood sealing primer obtained in this embodiment is tested for anti-bleeding properties of various dark substrates. The test process is: substrate sanding (240# sandpaper deburring, dust removal)→spraying of water-based wood sealing primer (Uniform spraying)→Drying (drying at 30～40℃ for 2h)→Grinding the primer (320# sandpaper to deburr and thoroughly remove dust)→Spraying conventional water-based anionic acrylic system white primer (uniform spraying)→Drying (30～40 ℃ drying for 2 hours, then turn to room temperature to dry for 16 hours) → to be tested.

Use a spectrophotometer to test the above test plate and record the initial color value, then place the test plate at 25°C for 1d, 7d, 30d and at 50°C for 1d, 3d, 7d, record the respective The color difference change values are summarized in Table 5c below:

Table 5c water-based wood sealing primer anti-bleeding color data ΔE* value

Example 6

1. Water-based wood sealing primer, calculated by important percentage:

Table 6a Components and content of water-based wood sealer primer

2. The preparation method of water-based wood sealing primer

(1) Water-based self-crosslinking acrylic emulsion Add 4501 into container 1 with stirring device, start stirring at a low speed of 500rpm, add pH regulator AMP-95, defoamer TEGO-822 and 15 parts of water in sequence, keep stirring at low speed for 8 minutes, adjust the speed to high speed 1500rpm, add titanium white powder For BLR-895, keep stirring at high speed for 15 minutes;

(2) Take another set of container 2 with stirring device, add dipropylene glycol butyl ether, dipropylene glycol butyl ether, emulsifier EH-9 and 10 parts of water in sequence, adjust the speed to high speed 1200rpm and keep stirring at high speed for 30 minutes, then stop stirring Obtain the film-forming aid pre-dispersion liquid, then slowly add this film-forming aid pre-dispersion liquid in the container 1, and control the duration from the beginning of adding to the completion of adding to be 15min;

(3) Adjust the stirring speed in container 1 to a medium speed of 900rpm, and add cationic monomer modified water-based acrylic emulsion HG-4810 and internal crosslinking agent in sequence HYDROSIL 2926, anti-bleeding additive L-44, grinding aid HydropalatSL 3697, substrate wetting agent Tego-245, fungicide Bioban 586, Skane M8, keep stirring at medium speed for 8 minutes, then filter through 240# filter cloth to obtain water-based Wood sealer primer.

3. Comprehensive performance of water-based wood sealing primer

The water-based wood sealer made above is tested according to GB/T 23999 (D), and the results are shown in Table 6b for comprehensive performance:

Table 6b Comprehensive performance of water-based wood sealer primer

Test items Waterborne wood sealer primer Compared with standard requirements testing method state in container No abnormality No hard lumps after mixing GB/T 23999-2009 Coating Appearance Coating film appearance is normal - GB/T 23999-2009 Non-volatile matter/% 32.8 ≥30 GB/T1725-2007 Surface dry time/min 25 ≤30 GB/T 1728-1979 surface dry B method Working time/h 4 ≤6 GB/T 1728-1979 Hard Work A Method Storage stability (50℃, 7d) No abnormality and no obvious post-thickening No abnormality GB/T 23999-2009 Grinding Easy to sand and non-stick sandpaper Easy to polish GB/T 23999-2009 Adhesion/level 0 ≤1 GB/T9286-1998

As can be seen from the above table, the overall performance of the water-based wood sealing primer obtained in this embodiment is better than that of the national standard GB/T23999 (D)-2009, and its storage stability and sanding properties have reached the performance of conventional water-based clear primers standard.

The water-based wood sealing primer obtained in this embodiment is tested for anti-bleeding properties of various dark substrates. The test process is: substrate sanding (240# sandpaper deburring, dust removal)→spraying of water-based wood sealing primer (uniform spraying)→drying (drying at 30～40℃ for 2h)→primer grinding (320# sandpaper to deburr, thoroughly dust removal)→spraying conventional water-based anionic acrylic system white primer (uniform spraying)→drying (30～40 ℃ drying for 2 hours, then turn to room temperature to dry for 16 hours) → to be tested.

Use a spectrophotometer to test the above test plate and record the initial value of the color, then place the test plate at 25°C for 1d, 7d, 30d and at 50°C for 1d, 3d, 7d, record the respective The color difference change values are summarized in Table 6c below:

Table 6c water-based wood sealing primer anti-bleeding color data ΔE* value

Example 7

1. Water-based wood sealing primer, calculated by important percentage:

Table 7a Components and content of water-based wood sealer primer

2. The preparation method of water-based wood sealing primer

(1) Water-based self-crosslinking acrylic emulsion Add 4501 into container 1 with stirring device, start stirring at a low speed of 500rpm, add pH regulator AMP-95, defoamer TEGO-822 and 15 parts of water in sequence, keep stirring at low speed for 8 minutes, adjust the speed to high speed 1500rpm, add titanium white powder R-902+, keep stirring at high speed for 15 minutes;

(2) Take another set of container 2 with stirring device, add propylene glycol butyl ether, propylene glycol butyl ether, emulsifier EnviroGem AD01 and 10 parts of water in sequence, adjust the speed to high speed 1200rpm and keep stirring at high speed for 30 minutes, then stop stirring to obtain a film Auxiliary agent predispersion liquid, then slowly this film-forming auxiliary agent predispersion liquid is added in the container 1, and the duration of control from beginning to adding to adding is 15min;

(3) Adjust the stirring speed in container 1 to a medium speed of 900rpm, and add cationic monomer modified water-based acrylic emulsion HG-4810 and internal crosslinking agent in sequence HYDROSIL 2926, anti-bleeding additive L-44, grinding aid HydropalatSL 3697, substrate wetting agent Tego-245, fungicide Bioban 586, Skane M8, keep stirring at medium speed for 8 minutes, then filter through 240# filter cloth to obtain water-based Wood sealer primer.

3. Comprehensive performance of water-based wood sealing primer

The water-based wood sealer made above is tested according to GB/T 23999 (D), and the results are shown in Table 7b for comprehensive performance:

Table 7b Comprehensive performance of water-based wood sealer primer

Test items Waterborne wood sealer primer Compared with standard requirements testing method state in container No abnormality No hard lumps after mixing GB/T 23999-2009 Coating Appearance Coating film appearance is normal - GB/T 23999-2009 Non-volatile matter/% 32.8 ≥30 GB/T1725-2007 Surface dry time/min 25 ≤30 GB/T 1728-1979 surface dry B method Working time/h 4 ≤6 GB/T 1728-1979 Hard Work A Method Storage stability (50℃, 7d) No abnormality and no obvious post-thickening No abnormality GB/T 23999-2009 Grinding Easy to sand and non-stick sandpaper Easy to polish GB/T 23999-2009 Adhesion/level 0 ≤1 GB/T9286-1998

As can be seen from the above table, the overall performance of the water-based wood sealing primer obtained in this embodiment is better than that of the national standard GB/T23999 (D)-2009, and its storage stability and sanding properties have reached the performance of conventional water-based clear primers standard.

The water-based wood sealing primer obtained in this embodiment is tested for anti-bleeding properties of various dark substrates. The test process is: substrate sanding (240# sandpaper deburring, dust removal)→spraying of water-based wood sealing primer (uniform spraying)→drying (drying at 30～40℃ for 2h)→primer grinding (320# sandpaper to deburr, thoroughly dust removal)→spraying conventional water-based anionic acrylic system white primer (uniform spraying)→drying (30～40 ℃ drying for 2 hours, then turn to room temperature to dry for 16 hours) → to be tested.

Use a spectrophotometer to test the above test plate and record the initial value of the color, then place the test plate at 25°C for 1d, 7d, 30d and at 50°C for 1d, 3d, 7d, record the respective The color difference change values are summarized in Table 7c below:

Table 7c water-based wood sealing primer anti-bleeding color data ΔE* value

Example 8

1. Water-based wood sealing primer, calculated by important percentage:

Table 8a Components and content of water-based wood sealer primer

2. The preparation method of water-based wood sealing primer

(1) Water-based self-crosslinking acrylic emulsion Add 4501 into container 1 with a stirring device, start stirring at a low speed of 500rpm, add pH regulator AMP-95, defoamer TEGO-904W and 5 parts of water in sequence, keep stirring at a low speed for 8 minutes, adjust the speed to a high speed of 1500rpm, add titanium white powder R-902+, keep stirring at high speed for 15 minutes;

(2) Take another set of container 2 with a stirring device, add dipropylene glycol butyl ether, dipropylene glycol butyl ether, emulsifier EnviroGem AD01 and 10 parts of water in sequence, adjust the speed to 1200rpm at a high speed and keep stirring at a high speed for 30 minutes, then stop stirring to obtain Film-forming aid pre-dispersion liquid, then slowly this film-forming aid pre-dispersion liquid is added in the container 1, control is 15min from beginning to add to the duration of adding;

(3) Adjust the stirring speed in container 1 to medium speed 900rpm, add cationic monomer modified water-based acrylic emulsion ECS-4907, internal crosslinking agent in sequence HYDROSIL 2926, anti-bleeding additive L-44, grinding aid Hydropalat SL 3697, substrate wetting agent Tego-245, fungicide Bioban 586, Skane M8, keep stirring at medium speed for 8 minutes and filter through 240# filter cloth Waterborne wood sealer primer.

3. Comprehensive performance of water-based wood sealing primer

The water-based wood sealer made above is tested according to GB/T 23999 (D), and the results are shown in Table 8b for comprehensive performance:

Table 8b Comprehensive properties of water-based wood sealer primer

Test items Waterborne wood sealer primer Compared with standard requirements testing method state in container No abnormality No hard lumps after mixing GB/T 23999-2009 Coating Appearance Coating film appearance is normal - GB/T 23999-2009 Non-volatile matter/% 32.8 ≥30 GB/T1725-2007 Surface dry time/min 25 ≤30 GB/T 1728-1979 surface dry B method Working time/h 4 ≤6 GB/T 1728-1979 Hard Work A Method Storage stability (50℃, 7d) No abnormality and no obvious post-thickening No abnormality GB/T 23999-2009 Grinding Easy to sand and non-stick sandpaper Easy to polish GB/T 23999-2009 Adhesion/level 0 ≤1 GB/T9286-1998

As can be seen from the above table, the overall performance of the water-based wood sealing primer obtained in this embodiment is better than that of the national standard GB/T23999 (D)-2009, and its storage stability and sanding properties have reached the performance of conventional water-based clear primers standard.

The water-based wood sealing primer obtained in this embodiment is tested for anti-bleeding properties of various dark substrates. The test process is: substrate sanding (240# sandpaper deburring, dust removal)→spraying of water-based wood sealing primer (uniform spraying)→drying (drying at 30～40℃ for 2h)→primer grinding (320# sandpaper to deburr, thoroughly dust removal)→spraying conventional water-based anionic acrylic system white primer (uniform spraying)→drying (30～40 ℃ drying for 2 hours, then turn to room temperature to dry for 16 hours) → to be tested.

Use a spectrophotometer to test the above test plate and record the initial color value, then place the test plate at 25°C for 1d, 7d, 30d and at 50°C for 1d, 3d, 7d, record the respective The color difference change values are summarized in Table 8c below:

Table 8c water-based wood sealing primer anti-bleeding color data ΔE* value

Example 9

1. Water-based wood sealing primer, calculated by important percentage:

Table 9a Components and content of water-based wood sealer primer

2. The preparation method of water-based wood sealing primer

(1) Add water-based self-crosslinking acrylic emulsion ROSHIELD 3311 into container 1 with a stirring device, start stirring at a low speed of 500rpm, add pH regulator AMP-95, defoamer BYK-024 and 5 parts of water in sequence, and keep the low speed After stirring for 8 minutes, adjust the rotation speed to a high speed of 1500rpm, and add titanium dioxide R-902+, keep stirring at high speed for 15 minutes;

(2) Take another set of container 2 with a stirring device, add dipropylene glycol butyl ether, dipropylene glycol butyl ether, emulsifier EnviroGem AD01 and 10 parts of water in sequence, adjust the speed to 1200rpm at a high speed and keep stirring at a high speed for 30 minutes, then stop stirring to obtain Film-forming aid pre-dispersion liquid, then slowly this film-forming aid pre-dispersion liquid is added in the container 1, control is 15min from beginning to add to the duration of adding;

(3) Adjust the stirring speed in container 1 to medium speed 900rpm, add cationic monomer modified water-based acrylic emulsion ECS-4907, internal crosslinking agent in sequence HYDROSIL 2926, anti-bleeding additive L-44, grinding aid Hydropalat SL 3697, substrate wetting agent Tego-245, fungicide Defros CP62, Skane M8, keep stirring at a medium speed for 8 minutes, then filter through 240# filter cloth Waterborne wood sealer primer.

3. Comprehensive performance of water-based wood sealing primer

The water-based wood sealer made above is tested according to GB/T 23999 (D), and the results are shown in Table 9b for comprehensive performance:

Table 9b Comprehensive performance of water-based wood sealer primer

Test items Waterborne wood sealer primer Compared with standard requirements testing method state in container No abnormality No hard lumps after mixing GB/T 23999-2009 Coating Appearance The appearance of the coating film is normal - GB/T 23999-2009 Non-volatile matter/% 32.8 ≥30 GB/T1725-2007 Surface dry time/min 25 ≤30 GB/T 1728-1979 surface dry B method Working time/h 4 ≤6 GB/T 1728-1979 Hard Work A Method Storage stability (50℃, 7d) No abnormality and no obvious post-thickening No abnormality GB/T 23999-2009 Grinding Easy to sand and non-stick sandpaper Easy to polish GB/T 23999-2009 Adhesion/level 0 ≤1 GB/T9286-1998

As can be seen from the above table, the overall performance of the water-based wood sealing primer obtained in this embodiment is better than that of the national standard GB/T23999 (D)-2009, and its storage stability and sanding properties have reached the performance of conventional water-based clear primers standard.

The water-based wood sealing primer obtained in this embodiment is tested for anti-bleeding properties of various dark substrates. The test process is: substrate sanding (240# sandpaper deburring, dust removal)→spraying of water-based wood sealing primer (uniform spraying)→drying (drying at 30～40℃ for 2h)→primer grinding (320# sandpaper to deburr, thoroughly dust removal)→spraying conventional water-based anionic acrylic system white primer (uniform spraying)→drying (30～40 ℃ drying for 2 hours, then turn to room temperature to dry for 16 hours) → to be tested.

Use a spectrophotometer to test the above test plate and record the initial value of the color, then place the test plate at 25°C for 1d, 7d, 30d and at 50°C for 1d, 3d, 7d, record the respective The color difference change values are summarized in Table 9c below:

Table 9c water-based wood sealing primer anti-bleeding color data ΔE* value

Example 10

1. Water-based wood sealing primer, calculated by important percentage:

Table 10a Components and content of water-based wood sealer primer

2. The preparation method of water-based wood sealing primer

(1) Add water-based self-crosslinking acrylic emulsion ROSHIELD 3311 into container 1 with a stirring device, start stirring at a low speed of 500rpm, add pH regulator AMP-95, defoamer BYK-093 and 5 parts of water in sequence, and keep the low speed After stirring for 8 minutes, adjust the rotation speed to a high speed of 1500rpm, and add titanium dioxide R-902+, keep stirring at high speed for 15 minutes;

(2) Take another set of container 2 with a stirring device, add dipropylene glycol butyl ether, dipropylene glycol butyl ether, emulsifier EnviroGem AD01 and 10 parts of water in sequence, adjust the speed to 1200rpm at a high speed and keep stirring at a high speed for 30 minutes, then stop stirring to obtain Film-forming aid pre-dispersion liquid, then slowly this film-forming aid pre-dispersion liquid is added in the container 1, control is 15min from beginning to add to the duration of adding;

(3) Adjust the stirring speed in container 1 to a medium speed of 900rpm, and add cationic monomer modified water-based acrylic emulsion in turn 4312, internal crosslinking agent HYDROSIL 2926, anti-bleeding additive L-44, grinding aid Hydropalat SL 3697, substrate wetting agent Tego-245, fungicide Defros CP62, Skane M8, keep stirring at a medium speed for 8 minutes, then filter through 240# filter cloth Waterborne wood sealer primer.

3. Comprehensive performance of water-based wood sealing primer

The above-mentioned water-based wood sealer made above is carried out according to GB/T 23999 (D) to carry out various performance tests, the results are shown in Table 10b for comprehensive performance:

Table 10b Comprehensive performance of water-based wood sealer primer

As can be seen from the above table, the overall performance of the water-based wood sealing primer obtained in this embodiment is better than that of the national standard GB/T23999 (D)-2009, and its storage stability and sanding properties have reached the performance of conventional water-based clear primers standard.

The water-based wood sealing primer obtained in this embodiment is tested for anti-bleeding properties of various dark substrates. The test process is: substrate sanding (240# sandpaper deburring, dust removal)→spraying of water-based wood sealing primer (uniform spraying)→drying (drying at 30～40℃ for 2h)→primer grinding (320# sandpaper to deburr, thoroughly dust removal)→spraying conventional water-based anionic acrylic system white primer (uniform spraying)→drying (30～40 ℃ drying for 2 hours, then turn to room temperature to dry for 16 hours) → to be tested.

Use a spectrophotometer to test the above test plate and record the initial value of the color, then place the test plate at 25°C for 1d, 7d, 30d and at 50°C for 1d, 3d, 7d, record the respective The color difference change values are summarized in Table 0c below:

Table 10c water-based wood sealing primer anti-bleeding color data ΔE* value

The descriptions of the above embodiments are only used to help understand the method and core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can also be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. a kind of aqueous wooden ware seal coat, which is characterized in that by weight percentage, component and content are as follows:

The cationic monomer modified aqueous acrylic acid lotion is through the modified whole show anion characteristic of cationic monomer Aqueous acrylic emulsion；

The water-borne Self-Crosslinked Acrylic lotion is minimum film formation temperature between 30 DEG C~50 DEG C of anion-type water-thinned selfing Bipropenyl yogurt liquid；

The titanium dioxide is rutile type titanium white of the surface after aluminium or modified zirconia；

The internal crosslinker is the polysiloxane oligomers with epoxy functionality；

The anti-bleeding auxiliary agent is the aqueous solution of the complex containing aluminium, magnesium, zirconium or zinc；

The auxiliary agent is four kinds or more in pH adjusting agent, defoaming agent, thickener, emulsifier, substrate wetting agents and fungicide.

2. according to aqueous wooden ware seal coat described in claims 1, it is characterised in that: the cation mono is modifies Aqueous acrylic emulsion is the Joncryl 8227 of BASF AG, Wan Hua chemical company4312, Zhong Shanyi Cisco One of the ECS-4907 of company and the self-produced HG-4810 of Garbo jasmine company or a variety of.

3. according to aqueous wooden ware seal coat described in claims 1, it is characterised in that: the waterborne self-crosslinkable propylene Yogurt liquid is Wan Hua chemical company4501、4401, the ROSHIELD 3311 of the Dow Chemical Company, BASF One of the Joncryl 8330 of company and the Setaqua 6718 of Niu Peisi company or a variety of.

4. according to aqueous wooden ware seal coat described in claims 1, it is characterised in that: the titanium dioxide is that special promise is public CR-826, Ke Mu company of departmentR-900、R-902+, the new good fortune NTR-606 in Ningbo and one hundred benefit connection of imperial boa CompanyOne of BLR-895 or a variety of.

5. according to aqueous wooden ware seal coat described in claims 1, it is characterised in that: the internal crosslinker is to win wound Industrial groupOne of HYDROSIL 2926, the Coatosil2287 of Mai Tu company, the U.S. and MP200 or It is a variety of；The anti-bleeding auxiliary agent is one of L-44, L-66 and L-77 of U.S. Halox company or a variety of.

6. according to aqueous wooden ware seal coat described in claims 1, it is characterised in that: the grinding auxiliary agent is containing hard The polishing powder or polishing slurry of resin acid zinc or calcium stearate compound；The coalescing agent is alcohol ethers organic solvent.

7. according to aqueous wooden ware seal coat described in claims 6, it is characterised in that: the grinding auxiliary agent is that monkey is holy One in the SAK-ZS-PLB of the MJ-555 of chemical industry, the Hydropalat SL 3697 of BASF AG and three benefit chemistry of Singapore Kind is a variety of；The coalescing agent is the one of propylene glycol monomethyl ether, propandiol butyl ether, dipropylene glycol methyl ether and dipropylene Kind is a variety of.

8. according to aqueous wooden ware seal coat described in claims 1, it is characterised in that: to account for the percentage of total mass of raw material Than meter, the dosage of the auxiliary agent is as follows:

The pH adjusting agent is organic amine compound；

The defoaming agent is organic silicon defoaming agent；

The thickener is association type polyurethanes thickener；

The emulsifier is nonionic surfactant；

The substrate wetting agents are Siloxane-Oxyalkylene Copolymers class wetting agent；

The fungicide is isothiazolone-containing class biocide.

9. the preparation method of aqueous wooden ware seal coat described in claims 1-8, it is characterised in that include the following steps:

1) water-borne Self-Crosslinked Acrylic lotion is added in container 1, unlatching stirs at low speed, and pH adjusting agent, defoaming agent and 0- is added 15% water, holding adjust revolving speed to high-speed stirred after stirring at low speed 5-8min, titanium dioxide are added, keeps high-speed stirred；

2) coalescing agent and remaining water are added in container 2, adjust revolving speed to high speed and after keeping high-speed stirred 20-30min Stop stirring, obtains coalescing agent pre-dispersed liquid, coalescing agent pre-dispersed liquid is added in container 1；

3) speed of agitator in container 1 is adjusted to moderate-speed mixer, sequentially adds cationic monomer modified aqueous acrylic acid lotion, interior Crosslinking agent, anti-bleeding auxiliary agent, grinding auxiliary agent, substrate wetting agents and fungicide filter after keeping moderate-speed mixer, obtain aqueous wooden ware envelope Close priming paint；

It is described stir at low speed, the revolving speed of moderate-speed mixer and high-speed stirred be respectively 300-500r/min, 800-1000r/min and 1200-1500r/min。

10. the preparation method of aqueous wooden ware seal coat according to claim 9, it is characterised in that: described in step 1) The water that pH adjusting agent, defoaming agent and 0-15% is added further includes the thickener that 0-0.4% is added；The thickener of surplus is in step 3) It is added when charging；It further includes that emulsifier is added in container 2 that coalescing agent and remaining water, which are added, described in step 2)；Step 1) The time of the holding high-speed stirred is 10-15min；Coalescing agent pre-dispersed liquid is added to container 1 described in step 2) In time be 10-15min；The time that moderate-speed mixer is kept described in step 3) is 8-10min；Described is filtered into through 240# Filter-cloth filtering.