CN103864340A - Water-repellent admixture for mortar and concrete - Google Patents

Abstract

The mortar concrete waterproofing agent disclosed by the invention is an organic silicon emulsion with a core-shell structure and a latex particle size <200nm formed by soap-free polymerization and water, a concrete shrinkage reducing agent, a defoaming agent, a water reducing agent, and a cement hydration accelerator. It is made of compounding agent, lithium compound and air-entraining agent. When its content in mortar is 1%, the water permeability ratio of the waterproof mortar layer obtained is ≥ 420%, and the water absorption ratio in 48 hours is ≤ 48%. When the dosage is 0.2%, the penetration height ratio of the waterproof concrete layer obtained is ≤15%, the water absorption ratio of 48h is ≤26%, and the shrinkage ratio of 28d is ≤102%. The waterproofing agent provided by the present invention not only contains nano-sized core-shell spherical particle polymers, but also contains compounds such as shrinkage reducing agents, air-entraining agents, and lithium salts with different functions, so that the impermeability of the waterproof layer can be greatly enhanced , water resistance, durability, avoid cracking and enhance toughness; at the same time, it is safe and non-toxic, easy to produce, does not pollute the environment, low cost, simple construction, and short opening time.

Description

A kind of mortar concrete waterproofing agent

technical field

The invention belongs to the technical field of mortar concrete waterproofing agent, in particular to a mortar concrete waterproofing agent.

Background technique

Waterproof engineering occupies a very important position in construction engineering. In the practice of construction engineering, quality accidents caused by unreasonable waterproof engineering design, improper material selection, and rough construction are not uncommon, and light ones cause roof and joint leakage and paint peeling off; Seriously, it causes underground works to be submerged in water, and even buildings collapse, causing losses to state property and endangering people's lives. Therefore, the waterproofing project must be implemented and guaranteed with high quality.

The quality of waterproof materials is one of the most critical links for high-quality implementation and protection of waterproof projects. After years of development, waterproof materials can be divided into waterproof coiled materials, waterproof coatings, waterproof sealants, waterproof agents, etc. at present. Among them, the construction of waterproof coiled materials is relatively cumbersome, and waterproof coatings and sealants are expensive. Only waterproofing agents can form an organic whole with mortar and concrete layers, and then form an integral structure with buildings, and their cost is cheap. Construction The process is greatly simplified, which is the development trend of the building waterproof industry in the future. However, it is a pity that although the current waterproofing agent market has many product specifications, the products are not only chaotic in price, but also have great defects in quality, which greatly affects the use effect. For example, fatty acid salts are added to some waterproofing agent products, which will reduce the strength of mortar and concrete layers by about 25%; The strength of the waterproof layer has been reduced by at least 26%. The method of adding a water reducing agent to reduce the water consumption is used to increase the strength. Although the effect is achieved, the workability of the water reducing agent and mortar concrete is strictly controlled. This method Not desirable in engineering applications. There are also small molecular organosilicon compounds added to some waterproofing agent products (Guo Qingzhong. Research and Development of Organosilicon Fluorine Building Waterproof and Dustproof Materials. Postdoctoral Dissertation of Sun Yat-Sen University. 2007), which not only makes the formed waterproof layer have very good alkali resistance Poor, resulting in a short life of the waterproof layer, but also greatly delayed the opening time of construction, the formed waterproof layer sometimes as long as two days without hardening. Another example is the technical solution disclosed in the Chinese patent CN103073214A, which simply adds inorganic silicon compounds, expansion agents, inorganic aluminum salts and other substances to achieve the effect of filling and compacting. The application range of these products is limited, and the waterproof and impervious properties Poor, the durability of the waterproof layer is poor and easy to crack. In addition, although the silicone waterproof emulsion prepared by foreign giants such as Wacker and Degussa has good performance, the price is high, which is not conducive to promotion.

Therefore, existing water repellent products have low construction waterproof layer strength, long opening time, poor waterproof performance, short life, high price, complex production and construction techniques, etc., which have become bottleneck problems that need to be solved urgently in the promotion of water repellent.

Contents of the invention

The purpose of the present invention is to provide a mortar concrete waterproofing agent aiming at the problems existing in the prior art.

The waterproofing agent for mortar concrete provided by the present invention is characterized in that the waterproofing agent is 40-60 parts of silicone emulsion with a core-shell structure and latex particle size <200nm formed by soap-free polymerization and 10-30 parts added in sequence Water, 2-5 parts of concrete shrinkage reducing agent, 0.2-1 part of defoamer, 5-15 parts of water reducing agent, 1-3 parts of cement hydration accelerator, 10-20 parts of lithium compound and 0.5-1.5 parts of air-entraining agent It is made by stirring and compounding. When its content in mortar is 1%, the water permeability ratio of the obtained waterproof mortar layer is ≥420%, and the water absorption ratio in 48 hours is ≤48%. When its content in concrete is 0.2%. , the penetration height ratio of the obtained waterproof concrete layer is ≤15%, the water absorption ratio of 48h is ≤26%, the shrinkage rate ratio of 28d is ≤102%, and the parts of each material are parts by mass.

The core of the silicone emulsion latex particles described in the above waterproofing agent is an acrylate unsaturated compound and an unsaturated fatty acid, and the shell is an organic silicon compound, and the mass ratio of the two is 1-2:1-2.

The concrete shrinkage reducing agent described in the above waterproofing agent is preferably any one of the polyether shrinkage reducing agent, and the more preferred brand is AD-100 from Tane Company of Japan, Eclipse4500 from Grace Company of the United States, and Tetraguard AS20 from Basf Company of Germany. The shrinkage reducing agent can greatly reduce the shrinkage of mortar and concrete layers in the formed waterproof layer, reduce volume deformation, greatly reduce the risk of cracking, and improve the service life and durability of the overall waterproof layer.

The water reducing agent described in the above waterproofing agent is preferably any one of polycarboxylate high-performance water reducing agents, and more preferably the brand is Viscocrete1200 from Sika Company in Switzerland, Sp1 from Mapei Company in Italy, and Rheoplus26R from Basf Company in Germany. The water reducing agent can help reduce the water consumption of the mixture in the formed waterproof layer, so that the strength and compactness of the waterproof layer are higher.

The cement hydration accelerator described in the above waterproofing agent is triethanolamine or diethanolamine, which can shorten the opening time of the waterproof layer in the formed waterproof layer, increase the early strength, and speed up the construction progress.

The lithium compound described in the above waterproofing agent is any one of lithium hydroxide, lithium carbonate, lithium formate or lithium nitrate, which can form secondary hydration with calcium hydroxide produced by hydrate in the formed waterproof layer Rod crystals with a denser structure make the waterproof layer stronger and impermeable.

The defoamer described in the above waterproofing agent is preferably a commonly used defoamer for concrete, such as any one of tributyl phosphate, polyether defoamer or silicone defoamer, wherein the polyether defoamer is preferably Brands are Pluriol P425 from Basf, Germany, DF-100 from Tane, Japan, and Sitren AirVoid305 from Evonic, Germany; the preferred brands of silicone defoamers are Sitren AirVoid307 from Evonic, Germany, and AFE-2210 from Dow Coring, Belgium. BYK-093 of the BYK company. The defoaming agent can reduce the generation of harmful holes and communicating holes in the waterproof layer in the formed waterproof layer.

The air-entraining agent described in the above water repellent is any one of rosin saponin compound or polyoxyethylene ether compound, wherein the preferred brand of rosin saponin air-entraining agent is AER of Swiss Sika Company, DAREX AEA of U.S. Grace Company and MasterAir VR10 from Basf, Germany; the preferred brands of polyoxyethylene ether air-entraining agents are MasterAir AE200 from Basf, Germany, W-181S from Tane, Japan, and Rewopol TS35H from Evonic, Germany. The air-entraining agent can form small closed pores in the waterproof layer, destroy the capillary channel of the hydrate structure, and enhance the anti-seepage and anti-freeze properties of the waterproof layer.

The silicone emulsion described in the above waterproofing agent is prepared by the following method:

1) At room temperature, add dropwise a mixture of 100-330 parts of acrylic unsaturated monomer and 50-100 parts of unsaturated fatty acid into 100-200 parts of water containing 10-30 parts of reactive surfactant while stirring, And finish adding dropwise within 30min to get the monomer pre-emulsion;

2) Dissolve 5-10 parts of initiator in 20-60 parts of water for later use, then add 5-10 parts of protective colloid to 125-390 parts of water, stir and heat up to 60-90°C to dissolve it into a clear liquid, and then 50% initiator solution and all monomer pre-emulsions are evenly dropped in 1~2 hours under stirring conditions, and then the remaining initiator solution and 200~400 parts are evenly dropped in 2~4 hours under stirring conditions For unsaturated organosilicon compound, heat preservation reaction for 1-2 hours after dripping, after cooling down to 50°C, filter and discharge to obtain the emulsion of organosilicon core-shell structure.

The parts of each of the above materials are parts by mass.

The acrylic unsaturated monomer used in the above method is preferably 100-250 parts; the unsaturated fatty acid is preferably 50-70 parts; the stirring temperature is preferably 60-80° C.; the unsaturated organosilicon compound is preferably 200-300 parts.

The reactive surfactant used in the above method is a mixture of nonionic reactive surfactant and anionic reactive surfactant with a mass ratio of 1～2:2～1, wherein the nonionic reactive surfactant is with Alkylphenol polyether with an ethylene oxide\propane addition number of 8-50 for unsaturated groups; the preferred brand is SN-10, SN-15 or SN-20 produced by Foshan Kedi Gas Chemical Co., Ltd., Shanghai AE-100, AE-200, AE300 of Loyal Fine Chemical Co., Ltd. Anionic reactive surfactants include any one listed below: alkyl sulfonates with unsaturated groups, such as the brand is COPS-1 and MLS/AW of French Rodia Company, UCAN of Shanghai Zhongcheng Fine Chemical Co., Ltd. -1; Polyether sulfates with ethylene oxide\propane addition numbers of 8-50 with unsaturated groups, such as the APS100 of Swiss Clariant Company, the V-10s of Shanghai Zhongcheng Fine Chemical Co., Ltd. V-20s; sodium salt of fatty alcohol succinate with unsaturated groups, such as NRS-138, M-10s, A-200s of Shanghai Zhongcheng Fine Chemical Co., Ltd.; phosphate esters with unsaturated groups, such as The grades are PAM-200 and PZ-141 of French Rodia Company, and V-100P and V-200P of Shanghai Zhongcheng Fine Chemical Co., Ltd. The use of this reactive surfactant can avoid the negative factors of conventional surfactants dissociating in the system and forming a large number of harmful pores in the cement structure, making the waterproof layer more compact and enhancing the impermeability and compactness.

The acrylic unsaturated monomers used in the above method are composed of acrylic unsaturated hard monomers and soft monomers, the mass ratio of which is 1-2:1. Wherein the hard monomer is preferably any one of methyl methacrylate, methyl acrylate, acrylonitrile, acrylic acid or methacrylic acid; the soft monomer is preferably butyl acrylate, isooctyl acrylate, lauryl methacrylate , tert-butyl acrylate or stearyl methacrylate in any one.

The unsaturated fatty acid used in the above method is preferably at least one of oleic acid, linoleic acid and palmitoleic acid.

The initiator used in the above method is preferably any one of ammonium persulfate, sodium persulfate or potassium persulfate.

The protective colloid used in the above method is preferably any one of polyvinylpyrrolidone K90, polyvinyl alcohol 1799, sodium polyacrylate or polyacrylamide.

The unsaturated organosilicon compound used in the above method is vinyltriethoxysilane, vinyltrimethoxysilane, methylvinyldimethoxysilane, methylvinyldiethoxysilane, vinyltriacetyl Any one of oxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropyltriethoxysilane, allyl silicone oil and vinyl-terminated polydimethylsilane Any composition of oxane or vinyl-terminated polymethylvinylsiloxane, the mass ratio is 1~2:1~3, among which vinyltriethoxysilane and 3-methacryloxypropylene are preferred Triethoxysilane, vinyltriacetoxysilane, vinyltrimethylsilane and vinyl-terminated polydimethylsiloxane with a viscosity of 300cps to 10000cps.

Compared with the prior art, the present invention also has the following positive effects:

1. Since the fatty acid compound in the waterproofing agent provided by the present invention can form an intercalation structure with the unsaturated organosilicon compound and cement hydrate C-S-H gel, and then form an integral chemical structure with the entire cement concrete, thus avoiding the easy Migration occurs in mortar and concrete to destroy the interlayer structure and reduce the negative impact of strength.

2. Since the silicone emulsion in the water repellent provided by the present invention is obtained by soap-free emulsion polymerization, the latex particle polymer in the emulsion is a nano-sized core-shell spherical particle, so it can not only penetrate into In the gaps of the cement hydration structure, and the hydrophobic groups on the surface of the particles can be well adsorbed on the surface of the cement hydrate, making the hydration structure denser and the waterproof performance better.

3. Since the waterproofing agent provided by the present invention not only contains nano-sized core-shell spherical particle polymers, but also contains compounds such as shrinkage reducing agents, air-entraining agents, and lithium salts with different functions, these compounds support each other functionally , play a comprehensive complementary role, can greatly enhance the impermeability, water resistance, durability of the waterproof layer, avoid cracking and enhance toughness; at the same time, it is safe and non-toxic during preparation, the process is simple, does not pollute the environment, the cost is low, and the construction is simple. , opening hours are short.

4. Since the waterproof agent provided by the present invention has excellent waterproof performance, it can also replace waterproof coiled materials, reduce project cost and improve project quality.

Detailed ways

Examples are given below to further illustrate the present invention. It is necessary to point out that the following examples cannot be interpreted as limiting the protection scope of the present invention, if those skilled in the art make some non-essential improvements and adjustments to the present invention according to the above-mentioned content of the present invention, they still belong to the protection scope of the present invention.

Table 1

main raw material Abbreviations and grades Manufacturer Nonionic Reactive Surfactant SN-10, SN-15, SN-20 Foshan Kedi Gas Chemical Co., Ltd. Nonionic Reactive Surfactant AE-100, AE-200, AE300 Shanghai Loyalty Fine Chemicals Co., Ltd. Sodium succinate anionic reactive surfactant NRS-138, M-10s, A-200s Shanghai Loyalty Fine Chemicals Co., Ltd. Phosphate ester anionic reactive surfactant PZ-141, PAM-200 Rodia Phosphate ester anionic reactive surfactant V-100P, V-200P Shanghai Loyalty Fine Chemicals Co., Ltd. Sulfonate Anionic Reactive Surfactant C0PS-1, MLS/AW Rodia Sulfonate Anionic Reactive Surfactant UCAN-1 Shanghai Loyalty Fine Chemicals Co., Ltd. Sulfate-based anionic reactive surfactants APS100 Clariant Sulfate-based anionic reactive surfactants V-10s, V-20s Shanghai Loyalty Fine Chemicals Co., Ltd. lauryl methacrylate LMA Mitsubishi octadecyl methacrylate SMA shokubai polyvinylpyrrolidone K90 BASF Isooctyl acrylate - BASF polyvinyl alcohol 1799 kuraray Vinyltriethoxysilane Z-6518 Dow Corning 3-Methacryloxypropyltriethoxysilane Z-6036 Dow Corning vinyl terminated polydimethylsiloxane DY-V401, viscosity 300cs Shandong Dayi Chemical Co., Ltd. vinyl terminated polydimethylsiloxane DY-V401, viscosity 1500cs Shandong Dayi Chemical Co., Ltd. vinyl terminated polydimethylsiloxane DY-V401, viscosity 5000cs Shandong Dayi Chemical Co., Ltd. vinyl terminated polydimethylsiloxane DY-V401, viscosity 10000cs Shandong Dayi Chemical Co., Ltd. Polycarboxylate High Performance Water Reducer Rheoplus26R Basf Polycarboxylate High Performance Water Reducer Viscocrete 1200 Sika Polycarboxylate High Performance Water Reducer Sp1 Mapei Polyether shrinkage reducer AD-100 Tane Polyether shrinkage reducer Eclipse4500 Grace Polyether shrinkage reducer Tetraguard AS20 Basf Polyether defoamer DF-100 Tane Polyether defoamer Pluriol P425 Basf Polyether defoamer Sitren AirVoid305 Evonic Silicone defoamer AFE-2210 Dow Coring Silicone defoamer Sitren AirVoid307 Evonic Silicone defoamer BYK-093 BYK Polyether air-entraining agent W-181S Tane Polyether air-entraining agent MasterAir AE200 Basf Polyether air-entraining agent Rewopol TS35H Evonic Rosin air-entraining agent AER Sika Rosin air-entraining agent Darex AEA Grace Rosin air-entraining agent MasterAir VR10 Basf

In addition, it is worth noting that: 1) The parts of materials used in the following examples are all parts by mass. 2) After adding the waterproofing agent provided by the present invention, the relevant performance of the obtained waterproofing layer is tested according to the standard of JC474-2008 "Waterproofing Agent for Mortar and Concrete". 3) The grades, abbreviations and manufacturers of the main raw materials used in the following examples are shown in Table 1, and the rest of the raw materials are chemical substances that are easily available on the market.

Example 1

At room temperature, add dropwise a mixture of 60 parts of methyl methacrylate, 40 parts of LMA and 50 parts of oleic acid to 100 parts of water containing 10 parts of SN-10 and 20 parts of PZ-141 while stirring, and within 30 minutes After the dropwise addition, the monomer pre-emulsion is obtained; first, dissolve 5 parts of ammonium persulfate in 20 parts of water for later use, then add 5 parts of K90 into 390 parts of water, stir and raise the temperature to 60°C to dissolve it into a clear liquid, and then dissolve it in 2 hours Add 50% ammonium persulfate solution and all the monomer pre-emulsion evenly under internal stirring conditions at the same time, and then add the remaining ammonium persulfate solution and 200 parts of Z-6518 and 100 A mixture of DY-V401 (viscosity 1500cs), after dripping, keep it warm for 1 hour, cool down to 50°C, filter and discharge to obtain an emulsion with a silicone core-shell structure, with a particle size of 160nm.

Under stirring, add 30 parts of water, 2 parts of AD-100, 0.5 parts of tributyl phosphate defoamer, 5 parts of Rheoplus26R, 1 part of triethanolamine and 10 parts of lithium hydroxide into 40 parts of silicone emulsion, and mix well , and then add 1.5 parts of AER, make it evenly mixed and then pack it out to obtain mortar and concrete waterproofing agent.

Example 2

At room temperature, add dropwise a mixture of 220 parts of methyl acrylate, 110 parts of SMA and 70 parts of linoleic acid to 110 parts of water containing 7.5 parts of SN-15 and 7.5 parts of PAM-200 while stirring, and drop it within 30 minutes After the addition, the monomer pre-emulsion is obtained; first dissolve 10 parts of sodium persulfate in 55 parts of water for later use, then add 10 parts of polyvinyl alcohol 1799 into 200 parts of water and stir to raise the temperature to 80°C to dissolve it into a clear liquid, then Add 50% sodium persulfate solution and all the monomer pre-emulsion evenly dropwise within 1 hour under stirring condition, and then add the remaining sodium persulfate solution and 100 parts of Z-6036 evenly within 3 hours under stirring condition Mix it with 100 parts of DY-V401 (viscosity 5000cs), keep it warm for 1 hour after dropping, cool down to 50°C, filter and discharge to obtain a silicone core-shell emulsion with a particle size of 200nm.

Under stirring, add 20 parts of water, 5 parts of Eclipse4500, 0.5 parts of DF-100, 15 parts of Viscocrete1200, 3 parts of diethanolamine and 12 parts of lithium formate to 43.5 parts of silicone emulsion in sequence, mix well, then add 1 part of W- 181S, make it evenly mixed and then packed to obtain mortar and concrete waterproofing agent.

Example 3

At room temperature, add dropwise a mixture of 130 parts of acrylonitrile, 70 parts of butyl acrylate and 70 parts of palmitoleic acid to 130 parts of water containing 6.7 parts of SN-20 and 3.3 parts of COPS-1 while stirring, and within 30 minutes After the dropwise addition, the monomer pre-emulsion is obtained; first, dissolve 8 parts of potassium persulfate in 40 parts of water for later use, then add 5 parts of sodium polyacrylate into 236.5 parts of water, stir and raise the temperature to 70°C to dissolve it into a clear liquid, and then Add 50% potassium persulfate solution and all the monomer pre-emulsion uniformly dropwise within 2 hours under stirring conditions, and then drop the remaining potassium persulfate solution and 100 parts of Z-6518 uniformly within 2 hours under stirring conditions Mix with 200 parts of DY-V401 (viscosity 300cs), keep it warm for 2 hours after dropping, cool down to 50°C, filter and discharge to obtain an emulsion with a silicone core-shell structure, with a particle size of 150nm.

Under stirring, add 10 parts of water, 2 parts of AD-100, 1 part of AFE-2210, 5 parts of Sp1, 2 parts of diethanolamine and 20 parts of lithium nitrate in sequence to 59.2 parts of silicone emulsion, mix well, and then add 0.8 parts MasterAir AE200, make it evenly mixed, then pack it out to get mortar and concrete waterproofing agent.

Example 4

At room temperature, add dropwise a mixture of 67 parts of methacrylic acid, 33 parts of tert-butyl acrylate and 50 parts of oleic acid to 100 parts of water containing 10 parts of AE-100 and 20 parts of APS100 while stirring, and drop it within 30 minutes After the addition, the monomer pre-emulsion is obtained; firstly, dissolve 10 parts of ammonium persulfate in 60 parts of water for later use, then add 8 parts of polyacrylamide into 345 parts of water, stir and raise the temperature to 60°C to dissolve it into a clear liquid, and then in Add 50% ammonium persulfate solution and all the monomer pre-emulsion evenly within 2 hours under stirring conditions, and then add the remaining ammonium persulfate solution and 100 parts of Z-6518 and 200 parts of the mixture of DY-V401 (viscosity 10000cs), heat preservation reaction for 2 hours after dropping, after cooling down to 50°C, filter and discharge to obtain silicone core-shell structure emulsion with a particle size of 140nm.

Under stirring, add 20 parts of water, 2.3 parts of Tetraguard AS20, 0.2 parts of PluriolP425, 5 parts of Rheoplus26R, 1 part of triethanolamine and 10 parts of lithium carbonate to 60 parts of silicone emulsion in sequence, and mix well, then add 1.5 parts of Darex AEA, Mix it evenly and then pack it to obtain mortar and concrete waterproofing agent.

Example 5

At room temperature, add dropwise a mixture of 50 parts of acrylic acid, 50 parts of isooctyl acrylate and 100 parts of linoleic acid to 150 parts of water containing 10 parts of AE-200 and 20 parts of V-20s while stirring, and within 30 minutes After the dropwise addition, the monomer pre-emulsion is obtained; first, dissolve 10 parts of ammonium persulfate in 30 parts of water for later use, then add 5 parts of K90 into 175 parts of water, stir and raise the temperature to 75°C to dissolve it into a clear liquid, and then dissolve it at 1.8 50% ammonium persulfate solution and all monomer pre-emulsions were uniformly dripped in within h under stirring conditions, and then the remaining ammonium persulfate solution and 100 parts of Z-6518 and 100 parts of Z-6518 and 300 parts of the mixture of DY-V401 (viscosity 5000cs), keep it warm for 1.5h after dripping, cool down to 50°C, filter and discharge to obtain a silicone core-shell emulsion with a particle size of 120nm.

Under stirring, add 20 parts of water, 3 parts of Eclipse4500, 0.5 parts of Sitren AirVoid305, 10 parts of Viscocrete1200, 1 part of triethanolamine and 14 parts of lithium hydroxide to 50 parts of silicone emulsion in turn, mix well, then add 1.5 parts of MasterAir AE200 , so that it can be mixed evenly, and the material can be packed to obtain mortar and concrete waterproofing agent.

Example 6

At room temperature, add 125 parts of methacrylic acid, 125 parts of isooctyl acrylate, 10 parts of linoleic acid, 30 parts of oleic acid, A mixture of 10 parts of palmitoleic acid is added dropwise within 30 minutes to obtain a monomer pre-emulsion; first dissolve 10 parts of potassium persulfate in 30 parts of water for later use, then add 5 parts of K90 into 125 parts of water and stir to raise the temperature Dissolve it into a clear liquid at 90°C, then drop in 50% potassium persulfate solution and all the monomer pre-emulsion evenly within 2 hours under stirring conditions, and then drop in the remaining A mixture of potassium persulfate solution, 100 parts of Z-6518 and 150 parts of DY-V401 (viscosity 1500cs), after dripping, keep warm for 2 hours, cool down to 50°C, filter and discharge to obtain the emulsion of silicone core-shell structure. Particle size 180nm.

Under stirring, add 20 parts of water, 4 parts of Tetraguard AS20, 0.5 parts of SitrenAirVoid307, 10 parts of Rheoplus26R, 1 part of triethanolamine and 14 parts of lithium hydroxide to 48 parts of silicone emulsion in sequence. After mixing evenly, add 1.5 parts of W- 181S, make it evenly mixed and then packed to obtain mortar and concrete waterproofing agent.

Example 7

At room temperature, add 125 parts of methacrylic acid, 125 parts of isooctyl acrylate, 10 parts of linoleic acid, 30 parts of oleic acid, A mixture of 10 parts of palmitoleic acid is added dropwise within 30 minutes to obtain a monomer pre-emulsion; first dissolve 10 parts of potassium persulfate in 30 parts of water for later use, then add 5 parts of K90 into 125 parts of water and stir to raise the temperature Dissolve it into a clear liquid at 90°C, then drop in 50% potassium persulfate solution and all the monomer pre-emulsion evenly within 2 hours under stirring conditions, and then drop in the remaining A mixture of potassium persulfate solution, 150 parts of vinyltrimethoxysilane and 150 parts of DY-V401 (viscosity 1500cs), keep it warm for 1.2 hours after dripping, cool down to 50°C, filter and discharge to obtain silicone core-shell Structured emulsion with a particle size of 180nm.

Under stirring, add 20 parts of water, 5 parts of Eclipse4500, 0.5 parts of Sitren AirVoid305, 10 parts of Rheoplus26R, 1 part of triethanolamine and 14 parts of lithium hydroxide to 48 parts of silicone emulsion, and mix well, then add 0.5 parts of RewopolTS35H, Mix it evenly and then pack it to obtain mortar and concrete waterproofing agent.

Example 8

At room temperature, add dropwise a mixture of 67 parts of methacrylic acid, 33 parts of tert-butyl acrylate and 50 parts of oleic acid to 100 parts of water containing 10 parts of SN-20 and 20 parts of M-10s while stirring. After the internal dropwise addition, the monomer pre-emulsion is obtained; first, dissolve 10 parts of ammonium persulfate in 60 parts of water for later use, then add 8 parts of polyacrylamide into 345 parts of water and stir to raise the temperature to 60°C to dissolve it into a clear liquid. Then within 1.5 hours under stirring conditions, 50% ammonium persulfate solution and all monomer pre-emulsions were evenly dropped in at the same time, and then within 3 hours, under stirring conditions, the remaining ammonium persulfate solution and 100 parts of ethylene were evenly added dropwise at the same time The mixture of triethoxysilane and 200 parts of DY-V401 (viscosity 10000cs) was incubated for 2 hours after dropping, cooled to 50°C, and filtered to obtain a silicone core-shell emulsion with a particle size of 140nm.

Under stirring, add 20 parts of water, 2.3 parts of Tetraguard AS20, 0.2 parts of DF-100, 5 parts of Rheoplus26R, 1 part of triethanolamine and 10 parts of lithium carbonate to 60 parts of silicone emulsion in sequence, after mixing evenly, add 1.5 parts of AER , so that it can be mixed evenly, and the material can be packed to obtain mortar and concrete waterproofing agent.

Example 9

At room temperature, add dropwise a mixture of 60 parts of methyl methacrylate, 40 parts of LMA and 60 parts of oleic acid to 100 parts of water containing 10 parts of SN-10 and 20 parts of MLS/AW while stirring, and within 30 minutes After the dropwise addition, the monomer pre-emulsion is obtained; first, dissolve 5 parts of ammonium persulfate in 20 parts of water for later use, then add 5 parts of K90 into 390 parts of water, stir and raise the temperature to 60°C to dissolve it into a clear liquid, and then dissolve it in 2 hours Add 50% ammonium persulfate solution and all the monomer pre-emulsion evenly dropwise under internal stirring conditions, and then drop the remaining ammonium persulfate solution and 150 parts of Z-6518 and 100 A mixture of DY-V401 (viscosity 1500cs), after dripping, keep it warm for 1 hour, cool down to 50°C, filter and discharge to obtain an emulsion with a silicone core-shell structure, with a particle size of 160nm.

Under stirring, add 30 parts of water, 2 parts of Eclipse4500, 0.5 parts of tributyl phosphate defoamer, 5 parts of Viscocrete1200, 1 part of triethanolamine and 10 parts of lithium hydroxide to 40 parts of silicone emulsion, mix well, and then Add 1.5 parts of MasterAir VR10, mix it evenly, and then pack it to obtain mortar and concrete waterproofing agent.

Example 10

At room temperature, add dropwise a mixture of 130 parts of acrylonitrile, 70 parts of butyl acrylate and 70 parts of palmitoleic acid to 130 parts of water containing 6.7 parts of AE-200 and 3.3 parts of A-200s, and within 30 minutes After the dropwise addition, the monomer pre-emulsion is obtained; first, dissolve 8 parts of potassium persulfate in 40 parts of water for later use, then add 5 parts of sodium polyacrylate into 236.5 parts of water, stir and raise the temperature to 80°C to dissolve it into a clear liquid, and then Add 50% potassium persulfate solution and all the monomer pre-emulsion uniformly dropwise within 2 hours under stirring conditions, and then drop the remaining potassium persulfate solution and 100 parts of vinyl trimethyl The mixture of oxysilane and 200 parts of DY-V401 (viscosity 300cs) was incubated for 2 hours after dripping. After cooling down to 50°C, it was filtered to obtain a silicone core-shell emulsion with a particle size of 150nm.

Under stirring, add 10 parts of water, 2 parts of AD-100, 1 part of AFE-2210, 5 parts of Rheoplus26R, 2 parts of diethanolamine and 20 parts of lithium nitrate in order to 59.2 parts of silicone emulsion, mix well, and then add 0.8 parts W-181S, make it evenly mixed and then pack it to get mortar and concrete waterproofing agent.

Example 11

At room temperature, add dropwise a mixture of 67 parts of methacrylic acid, 33 parts of tert-butyl acrylate and 50 parts of oleic acid to 100 parts of water containing 10 parts of AE-100 and 20 parts of V-100P while stirring. After the internal dropwise addition, the monomer pre-emulsion is obtained; first, dissolve 10 parts of ammonium persulfate in 60 parts of water for later use, then add 5 parts of polyacrylamide into 345 parts of water and stir to raise the temperature to 60°C to dissolve it into a clear liquid. Then, within 2 hours, 50% ammonium persulfate solution and all monomer pre-emulsions were evenly dripped in under stirring conditions, and then within 3 hours, under stirring conditions, the remaining ammonium persulfate solution and 100 parts of Z- The mixture of 6518 and 200 parts of DY-V401 (viscosity 10000cs) was incubated for 1.8 hours after dripping. After cooling down to 50°C, it was filtered and discharged to obtain a silicone core-shell emulsion with a particle size of 140nm.

Under stirring, add 20 parts of water, 2.3 parts of Tetraguard AS20, 0.2 parts of BYK-093, 5 parts of Sp1, 1 part of triethanolamine and 10 parts of lithium carbonate to 60 parts of silicone emulsion in turn, mix well, then add 1.5 parts of Darex AEA, make it evenly mixed and then packed to obtain mortar and concrete waterproofing agent.

Example 12

At room temperature, add dropwise a mixture of 50 parts of acrylic acid, 50 parts of isooctyl acrylate and 100 parts of linoleic acid to 150 parts of water containing 10 parts of AE300 and 20 parts of UCAN-1, and add dropwise within 30 minutes After finishing, the monomer pre-emulsion is obtained; first, dissolve 10 parts of ammonium persulfate in 30 parts of water for later use, then add 5 parts of K90 into 175 parts of water, stir and raise the temperature to 75°C to dissolve it into a clear liquid, and then stir within 2 hours 50% ammonium persulfate solution and all monomer pre-emulsions were evenly dropped under the conditions at the same time, and then the remaining ammonium persulfate solution and 100 parts of Z-6518 and 300 parts of Z-6518 and 300 parts of The mixture of DY-V401 (viscosity 5000cs) was incubated for 2 hours after dripping, cooled to 50°C, and filtered to obtain a silicone core-shell emulsion with a particle size of 120nm.

Under stirring, add 20 parts of water, 3 parts of Eclipse4500, 0.5 parts of DF-100, 10 parts of Sp1, 1 part of triethanolamine and 14 parts of lithium hydroxide to 50 parts of silicone emulsion in sequence, mix well, and then add 1.5 parts of W -181S, make it evenly mixed and then pack it to get mortar and concrete waterproofing agent.

Example 13

At room temperature, add dropwise a mixture of 220 parts of methyl acrylate, 110 parts of SMA and 65 parts of linoleic acid to 110 parts of water containing 7.5 parts of SN-15 and 7.5 parts of V-200P while stirring, and drop it within 30 minutes After the addition, the monomer pre-emulsion is obtained; first dissolve 10 parts of sodium persulfate in 55 parts of water for later use, then add 10 parts of polyvinyl alcohol 1799 into 200 parts of water and stir to raise the temperature to 80°C to dissolve it into a clear liquid, then Within 1.2 hours, 50% sodium persulfate solution and all monomer pre-emulsions were evenly added dropwise under stirring conditions, and then within 3 hours, the remaining sodium persulfate solution and 100 parts of Z- Mixture of 6036 and 100 parts of DY-V401 (viscosity 5000cs), keep it warm for 1 hour after dripping, cool down to 50°C, filter and discharge to obtain silicone core-shell structure emulsion, particle size 200nm.

Under stirring, add 20 parts of water, 5 parts of Tetraguard AS20, 0.5 parts of SitrenAirVoid307, 15 parts of Rheoplus26R, 3 parts of diethanolamine and 12 parts of lithium formate to 43.5 parts of silicone emulsion in sequence, and after mixing evenly, add 1 part of Rewopol TS35H, Mix it evenly and then pack it to obtain mortar and concrete waterproofing agent.

Application example 1

The waterproofing agent prepared in Example 1 was added to the mortar in an amount of 1% of the mass of the mortar. The performance test results of the formed waterproof layer are shown in Table 2. It can be seen from Table 2 that its performance meets the requirements of the JC474-2008 standard.

Application example 2

The waterproofing agent prepared in Example 4 was added to the mortar in an amount of 0.2% of the mass of the mortar. The performance test results of the formed waterproof layer are shown in Table 3. It can be seen from Table 3 that its performance meets the requirements of the JC474-2008 standard.

Table 2

table 3

Claims (10)

1. a mortar concrete waterproofing agent, it is characterized in that this water-resisting agent is the nucleocapsid structure that has forming by soap-free polymerization, 40～60 parts of the organic silicon emulsions of latex particle size <200nm and 10～30 parts of water that add successively, 2～5 parts of economization agent for concrete, 0.2～1 part of defoamer, 5～15 parts of water reducers, 1～3 part of hydrated cementitious promotor, 10～20 parts of lithium compounds and 0.5～1.5 part of air entrapment agent are through stirring composite forming, it is when in mortar, volume is 1%, permeable pressure ratio >=420% of waterproof mortar layer obtaining, water demand ratio≤48% of 48h, it is when in concrete, volume is 0.2%, water-proof concrete layer permeated height ratio≤15% obtaining, and water demand ratio≤26% of 48h, shrinkage ratio≤102% of 28d, the umber of each material is mass parts.

2. mortar concrete waterproofing agent according to claim 1, the core that it is characterized in that the organic silicon emulsion emulsion particle described in this water-resisting agent is acrylate unsaturated compound and unsaturated fatty acids, shell is silicoorganic compound, and the mass ratio of the two is 1～2:2～1.

3. mortar concrete waterproofing agent according to claim 1, is characterized in that the economization agent for concrete described in this water-resisting agent is any in Soxylat A 25-7 compounds; Described water reducer is any in polycarboxylate water-reducer; Described hydrated cementitious promotor is trolamine or diethanolamine; Described lithium compound is any in lithium hydroxide, Quilonum Retard, lithium formate or lithium nitrate; Described defoamer is any in tributyl phosphate, polyethers defoamer or silicone based defoamer; Described air entrapment agent is any in rosined soap glycosides compound or Soxylat A 25-7 compounds.

4. mortar concrete waterproofing agent according to claim 2, is characterized in that the economization agent for concrete described in this water-resisting agent is any in Soxylat A 25-7 compounds; Described water reducer is any in polycarboxylate water-reducer; Described hydrated cementitious promotor is trolamine or diethanolamine; Described lithium compound is any in lithium hydroxide, Quilonum Retard, lithium formate or lithium nitrate; Described defoamer is any in tributyl phosphate, polyethers defoamer or silicone based defoamer; Described air entrapment agent is any in rosined soap glycosides compound or Soxylat A 25-7 compounds.

5. according to the mortar concrete waterproofing agent described in claim 1 or 2 or 3 or 4, it is characterized in that the organic silicon emulsion described in this water-resisting agent prepared by following methods:

1) under room temperature, in 100～200 parts of water that contain 10～30 parts of response type surfactant actives, drip by 100～330 parts of acrylic acid or the like unsaturated monomers and 50～100 parts of mixtures that unsaturated fatty acids forms while stirring, and drip in 30min, obtain monomer pre-emulsion;

2) first 5-10 part initiator is dissolved in 20～60 parts of water for subsequent use; then the protective colloid of 5～10 parts is added 125～390 parts of water stirrings to be warming up to 60～90 ℃ and make it to be dissolved as clear liquor; in 1～2h, under agitation condition, evenly splash into again 50% initiator solution and whole monomer pre-emulsion simultaneously; continue after in 2～4h, under agitation condition, evenly splash into again remaining initiator solution and 200～400 parts of unsaturated organosilicon compounds simultaneously; drip off rear insulation reaction 1～2h; be cooled to after 50 ℃; filtration discharging obtains the emulsion of organosilicon nucleocapsid structure

The umber of each material is mass parts above.

6. mortar concrete waterproofing agent according to claim 5, it is characterized in that response type surfactant active used in the preparation of organic silicon emulsion in this water-resisting agent is non-ionic reaction type tensio-active agent and anionic reactive type tensio-active agent the mixture with mass ratio 2:1～1:2, wherein non-ionic reaction type tensio-active agent be with the oxyethane of unsaturated group the propane adduct number alkylphenol polyoxyethylene that is 8-50, any in the polyoxyethylene nonylphenol ether that is 8-50 with the ethoxymer distribution of unsaturated group or the alkyl polyoxyethylene ether that is 8-50 with the ethoxymer distribution of unsaturated group, polyethers vitriol that anionic reactive type tensio-active agent is is 8-50 with the alkylsulfonate of unsaturated group, with the Huan Yangyiwan propane adduct number of unsaturated group, with the fatty alcohol succsinic acid sodium salt of unsaturated group or with any in the phosphoric acid ester of unsaturated group.

7. mortar concrete waterproofing agent according to claim 5, it is characterized in that acrylic acid or the like unsaturated monomer used in the preparation of organic silicon emulsion in this water-resisting agent is made up of the unsaturated hard monomer of esters of acrylic acid and soft monomer, its mass ratio is 1～2:1, and wherein hard monomer is any in methyl methacrylate, methyl acrylate, vinyl cyanide, acrylic or methacrylic acid; Soft monomer is any in butyl acrylate, Isooctyl acrylate monomer, lauryl methacrylate, tert-butyl acrylate or stearyl methacrylate alkyl ester.

8. mortar concrete waterproofing agent according to claim 5, is characterized in that unsaturated fatty acids used in the preparation of organic silicon emulsion in this water-resisting agent is at least one in oleic acid, linolic acid and physetoleic acid.

9. mortar concrete waterproofing agent according to claim 5, it is characterized in that unsaturated organosilicon compounds used in the preparation of organic silicon emulsion in this water-resisting agent is vinyltriethoxysilane, vinyltrimethoxy silane, methyl ethylene dimethoxy silane, methyl ethylene diethoxy silane, vinyltriacetoxy silane, 3-methyl allyl acyloxypropyl trimethoxysilane, 3-methacryloxypropyl triethoxyl silane, any composition in allyl group silicone oil in the poly-ethylene methacrylic radical siloxane of any and end-vinyl polydimethylsiloxane or end-vinyl, mass ratio is 1～2:1～3.

10. mortar concrete waterproofing agent according to claim 5, is characterized in that protective colloid used in the preparation of organic silicon emulsion in this water-resisting agent is any in Polyvinylpyrolidone (PVP), polyvinyl alcohol, sodium polyacrylate or polyacrylamide.