CN107386007B - Anti-fouling wallpaper and preparation method thereof - Google Patents

Abstract

The invention relates to the technical field of wallpaper, in particular to an anti-fouling wallpaper and a preparation method thereof. According to the invention, the excellent moisture resistance, water resistance and weather resistance of the organic silicon resin are combined with the excellent oxidation resistance, weather resistance and outstanding oil resistance of the acrylic resin to form a compact finishing layer, so that the surface energy of the surface of the wallpaper is reduced, the anti-penetration capability is improved, the wallpaper has the water-proof and oil-proof surface characteristics, stains are easy to clean, and no trace is left after cleaning.

Description

A kind of antifouling wallpaper and preparation method thereof

technical field

The invention relates to the technical field of wallpaper, in particular to an antifouling wallpaper and a preparation method thereof.

Background technique

Wallpaper, also known as wallpaper, is an interior decoration material used for wall covering, which is widely used in the interior decoration of houses, offices, hotels, hotels, etc. Due to the particularity of wallpaper, the choice of the color and style of its decoration has become the keynote of the whole family, and the diversification of wallpaper is completely in line with the principle of "light decoration and heavy decoration" in home decoration, which is deeply loved by consumers. The requirements for home decoration are also becoming more fashionable and individual, and wallpapers are respected by many people.

In daily life, due to children's playful nature or careless reasons, it is easy to leave stains such as juice and ink on the wallpaper. Such stains, in traditional products, are repeatedly scrubbed, not only can not be wiped off, but leave more unsightly traces, which is very unsightly. In addition, all kinds of dust, dirt or bacteria are easily stained on the wallpaper, and the wallpaper in the prior art cannot be scrubbed with water or is difficult to wipe clean with water.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a kind of anti-fouling wallpaper with strong anti-fouling ability and easy scrubbing for the above-mentioned deficiencies in the prior art, and another object of the present invention is to provide the preparation of the simple and convenient industrialization promotion of this anti-fouling wallpaper. method.

The object of the present invention is achieved through the following technical solutions:

An antifouling wallpaper, comprising a wallpaper base material, an acrylic resin layer compounded on the wallpaper base material, and an overcoat layer compounded on the acrylic resin layer, wherein the overcoat layer is formed of a resin composition, and the resin composition is composed of The raw materials of the following parts by weight are composed:

Acrylic resin emulsion 100 parts

Silicone modified acrylate 40-60 parts

Surfactant A 0.1-5 parts

Initiator A 0.1-2 parts

Coupling agent 0.1-5 parts

Nano inorganic powder 0.1-20 parts

Functional components 1-30 servings

70-100 parts of water,

Wherein, the functional component is a mixture of one or more of antistatic agent, conductive filler, flame retardant, antifungal agent, antibacterial agent and luminous powder.

The present invention combines the excellent moisture resistance, water resistance and weather resistance of the silicone resin with the excellent oxidation resistance, weather resistance and outstanding oil resistance of the acrylic resin by blending and modifying the silicone modified acrylate and the acrylic resin emulsion. It forms a dense overcoat layer and reduces the surface energy of the wallpaper surface, thereby improving the anti-penetration ability. It has the surface characteristics of waterproof and oil-proof, and the stains are easier to clean, and basically no traces are left after cleaning.

The present invention also provides a preparation method of the resin composition, comprising the following steps:

(1) Add 0.1-20 parts by weight of nano-inorganic powder and 0.1-5 parts by weight of coupling agent to 300 parts by weight of water, stir and disperse evenly at 70-90 °C, filter, dry and grind to obtain the nanoparticle treated with coupling agent. silica;

(2) In 100 parts by weight of the above-mentioned acrylic resin emulsion, add 40-60 parts by weight of silicone modified acrylate, 70-100 parts by weight of water, 0.1-5 parts by weight of surfactant A and 0.1-2 parts by weight of surfactant A The initiator A is added at 130-170 ℃ under stirring by adding the nano-silicon dioxide treated by the coupling agent, then adding 0-30 parts of functional components, stirring and dispersing evenly, curing and adjusting the viscosity of the resin to obtain the resin composition.

Wherein, the acrylic resin layer is formed by an acrylic resin emulsion, and the acrylic resin emulsion includes the following raw materials in parts by weight:

Butyl acrylate 25-45 parts

Ethylene glycol dimethacrylate 20-35 parts

1-5 parts of vinyl acetate

Dodecyl acrylate 15-25 parts

10-25 parts of methyl p-methacrylate

Surfactant B 0.1-5 parts

Initiator B 0.1-2 parts

Water 100-150 parts.

The acrylic resin layer of the invention is flat and compact, which is not only beneficial to the printing of the overcoat layer, but also helps to avoid the pollution of the acrylic resin layer caused by the high pH or moisture content of the wall. Acrylic resin coatings synthesized from butyl acrylate, ethylene glycol dimethacrylate, dodecyl acrylate, methyl p-methacrylate and other monomers have excellent oxidation resistance, weather resistance and outstanding oil resistance. Both polar and non-polar surfaces have strong adhesion, especially for the overcoats of the present invention. In addition, the acrylic resin layer of the present invention can be used for printing or embossing the pattern layer. Compared with the conventional technology of directly embossing the outer layer coating, it not only prevents the outer layer coating from being embossed and destroys the compactness and loses the anti-fouling property, but also solves the problem of The outer coating is not prone to embossing problems due to water resistance requirements.

The preparation method of the acrylic resin emulsion of the present invention is as follows: 25-45 parts by weight of butyl acrylate, 20-35 parts by weight of ethylene glycol dimethacrylate, 1-5 parts by weight of vinyl acetate, 15- 25 parts by weight of dodecyl acrylate, 10-25 parts by weight of methyl p-methacrylate, 0.1-5 parts of surfactant B, 0.1-2 parts of initiator B, 100-150 parts of water in 40 Mix evenly at -80°C, cure and adjust resin viscosity to make acrylic resin emulsion.

Wherein, the wallpaper base material is one of wood pulp paper, pure paper, non-woven paper, non-woven fabric, plain weave, cotton and linen fabric, and chemical fiber fabric, preferably non-woven fabric.

Wherein, the organosilicon-modified acrylate is one or more mixtures of silicone oil-modified acrylate, silicone rubber-modified acrylate, and silicone resin-modified acrylate. Preferably, the organosilicon-modified acrylate is composed of silicone acrylic resin and γ-methacryloyloxypropyltrimethoxysilane in a weight ratio of 1:(2.5-3.5), more preferably, the The silicone acrylic resin selected model is PTL-RT819.

As another preferred manner, the organosilicon modified acrylate is composed of organosilicon monomer and acrylic monomer in a weight ratio of (1-3):(40-50), and the organosilicon monomer is composed of γ -Methacryloxypropyltrimethoxysilane and vinyltriethoxysilane are composed of 1:(0.2-1.2) by weight, and the acrylic monomer is composed of butyl acrylate, ethyl acrylate and paraben Methyl methacrylate is composed in a weight ratio of 10:(1-5):(0.1-1).

In the present invention, the acrylic monomer is mainly butyl acrylate with a longer side chain, which is prone to internal plasticization effect, so that it is easier to infiltrate the acrylic resin layer and bond firmly with the acrylic resin layer, and the adhesion is strong; Ethyl ester and methyl p-methacrylate can enhance the crosslinking density between acrylic monomers and improve the compactness of the overcoat layer; γ-methacryloyloxypropyltrimethoxysilane in organic silicon monomers Hydrolysis will generate more -Si(OH) active groups, and these groups will condense to generate more cross-linking points, so that the overcoat layer forms a tighter cross-linked structure, and it is difficult for water molecules to penetrate the cover. The light layer swells, but also because γ-methacryloyloxypropyltrimethoxysilane is easily hydrolyzed to produce by-product flocculation, which hinders the polymerization between monomers, so vinyltriethoxy is added to the silicone monomer. Silane can effectively maintain the stability of the reaction and form a stable overcoat layer.

Wherein, the surfactant A is one or more mixtures of sodium lauryl sulfate, oleyl sulfate, sodium stearate, and disproportionated rosin soap. The surfactant A of the present invention is the key auxiliary agent of emulsion polymerization, and has a great influence on the polymerization speed and degree of polymerization of the silicone monomer and the acrylic monomer. Therefore, the preferred amount of the surfactant A in the overcoat layer is: 1-5 servings. Preferably, the surfactant A is composed of sodium lauryl sulfate and disproportionated rosin soap in a weight ratio of 1:(0.2-1), which can promote the organic molecules of the overcoat layer to cross-link to form a dense film structure, greatly reducing the Greatly improved water and stain resistance.

Wherein, the initiator A is potassium persulfate, sodium persulfate, azobisisobutyronitrile, benzoyl peroxide, tert-butyl benzoyl peroxide, methyl ethyl ketone peroxide, azobisisoheptanenitrile, A mixture of one or more of dimethyl azodiisobutyrate. Initiator A is one of the important components of emulsion polymerization. The water phase of initiator A initiates into free radicals, and then forms short-chain free radicals with molecularly dispersed monomers, which are captured by micelle particles due to compatibility and become colloidal particles. As a result, the vinyl monomers are polymerized. Preferably, the initiator A is composed of potassium persulfate and sodium persulfate in a weight ratio of 1:(0.5-1). Both potassium persulfate and sodium persulfate have good water solubility, and when used in the aqueous formulation of the present invention, the pollution caused by the organic initiator A is lower, and the initiation effect is good, which can effectively stimulate the interaction of olefinic monomers. The polymerization between them makes the overcoat layer dense and hydrophobic.

Wherein, the surfactant B is one or more mixtures of sodium lauryl sulfate, oleyl sulfate, sodium stearate, and disproportionated rosin soap.

Wherein, the initiator B of the present invention is potassium persulfate, sodium persulfate, azobisisobutyronitrile, benzoyl peroxide, tert-butyl benzoyl peroxide, methyl ethyl ketone peroxide, azobisisoheptanenitrile, A mixture of one or more of dimethyl azodiisobutyrate.

Preferably, the initiator A of the present invention is the same as the initiator B, preferably composed of sodium lauryl sulfate and disproportionated rosin soap in a ratio of 1:(0.2-1) by weight, and the surfactant A is the same as the surfactant B, preferably It is composed of potassium persulfate and sodium persulfate in a weight ratio of 1:(0.5-1). The acrylic resin layer and the overcoat layer of the present invention are respectively formed from the acrylic resin emulsion and obtained by the reaction of the acrylic resin, so the compatibility between the acrylic resin layer and the overcoat layer is very good.

Wherein, the coupling agent is a silane coupling agent, and the nano-inorganic powder is nano-silica. Preferably, the amount of the silane coupling agent is 1-5 parts, and the amount of the nano-silica is 1-20 servings. Nano-silica treated with silane coupling agent is added to the mask layer, so that the original micro-scale pores on the surface of the coating film become nano-scale pores, and the original nano-scale pores are blocked by nano-silica, resulting in The micropores on the surface of the material become smaller and less, the anti-penetration ability is improved, the water absorption rate is greatly reduced, and the anti-fouling ability is improved; in addition, the nano-silica will also increase the surface roughness of the coating, forming a A large number of micro-nano structure-like protrusions are used to effectively improve the strength of the coating, further reduce the surface energy of the coating, and significantly improve the hydrophobic performance of the coating.

The present invention also provides the above-mentioned preparation method of a kind of antifouling wallpaper, comprising the following steps:

(1) Composite acrylic resin layer: use gravure printing, screen printing or flexographic printing to composite the acrylic resin emulsion on the surface of the substrate layer, and then carry out high-temperature curing reaction and drying at a temperature of 140-180 °C;

(2) Composite overcoat layer: composite the resin composition on the acrylic resin layer, and then perform a high-temperature curing reaction and drying at a temperature of 120-210° C. to obtain the anti-fouling wallpaper.

Beneficial effects of the present invention: 1. The present invention makes silicone resin excellent in moisture resistance, water resistance and weather resistance and acrylic resin excellent in oxidation resistance and weather resistance by blending and modifying silicone modified acrylate and acrylic resin emulsion. Combined with the outstanding oil resistance, it forms a dense overcoat layer, which reduces the surface energy of the wallpaper surface, thereby improving the anti-penetration ability. 2. The present invention also provides a preparation method with simple steps, high production efficiency, and easy industrialization of the wallpaper.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative work.

FIG. 1 is a schematic structural diagram of the antifouling wallpaper of Examples 1-8 of the present invention.

Among them, 1 is a wallpaper base material, 2 is an acrylic resin layer, and 3 is an overcoat layer.

Detailed ways

The present invention will be further described with reference to the following examples.

Example 1

As shown in Figure 1, an antifouling wallpaper comprises a wallpaper substrate, an acrylic resin layer compounded on the wallpaper substrate, and an overcoat layer compounded on the acrylic resin layer, wherein the overcoat layer is formed of a resin composition, The resin composition is composed of the following raw materials in parts by weight:

Acrylic resin emulsion 100 parts

Silicone modified acrylate 50 parts

Surfactant A 3 parts

Initiator A 1 part

Coupling agent 3 parts

Nano inorganic powder 10 parts

15 functional components

85 parts of water.

Wherein, the functional component is an antistatic agent.

The preparation method of the resin composition includes the following steps:

(1) Add 10 parts by weight of nano-inorganic powder and 3 parts by weight of coupling agent to 300 parts by weight of water, stir and disperse evenly at 80°C, filter, dry and grind to obtain nano-silica treated with coupling agent;

(2) In 100 parts by weight of the above-mentioned acrylic resin emulsion, add 50 parts by weight of silicone modified acrylate, add 85 parts by weight of water, add 3 parts by weight of surfactant A and 1 part by weight of initiator A, at 150 parts by weight The nano-silicon dioxide treated with the coupling agent is added under stirring, 15 parts of functional components are added, the mixture is stirred to disperse uniformly, and the resin viscosity is cured and adjusted to prepare the resin composition.

Wherein, the acrylic resin layer is formed by an acrylic resin emulsion, and the acrylic resin emulsion includes the following raw materials in parts by weight:

Butyl acrylate 35 parts

Ethylene glycol dimethacrylate 27.5 parts

2.5 parts of vinyl acetate

20 parts of dodecyl acrylate

Methyl methacrylate 17.5 parts

2.5 parts of surfactant B

Initiator B 1 part

125 parts of water.

The preparation method of the alkenoic acid resin emulsion of the present invention is as follows: taking the above raw materials, mixing uniformly at 60° C., curing and adjusting the resin viscosity to 900 CPS.

Wherein, the wallpaper base material is non-woven fabric.

Wherein, the organosilicon modified acrylate is a commercially available silicone acrylic resin.

Wherein, the surfactant A is composed of sodium lauryl sulfate and disproportionated rosin soap in a weight ratio of 1:0.6.

Wherein, the initiator A is composed of potassium persulfate and sodium persulfate in a weight ratio of 1:0.75. .

Wherein, the surfactant B is composed of sodium lauryl sulfate and oleyl sulfate in a weight ratio of 1:0.6.

Wherein, the initiator B is composed of benzoyl peroxide and benzoyl tert-butyl peroxide in a weight ratio of 1:0.75.

The preparation method of a kind of antifouling wallpaper as above, comprises the steps:

(1) Composite acrylic resin layer: using gravure printing, the acrylic resin emulsion is composited on the surface of the substrate layer, and then subjected to high temperature curing reaction and drying at a temperature of 140-180 °C;

(2) Composite overcoat layer: composite the above-mentioned resin composition on the acrylic resin layer, and then perform a high-temperature curing reaction and drying at a temperature of 120-210° C. to obtain the anti-fouling wallpaper.

Example 2

As shown in Figure 1, an antifouling wallpaper comprises a wallpaper substrate, an acrylic resin layer compounded on the wallpaper substrate, and an overcoat layer compounded on the acrylic resin layer, wherein the overcoat layer is formed of a resin composition, The resin composition is composed of the following raw materials in parts by weight:

Acrylic resin emulsion 100 parts

Silicone modified acrylate 50 parts

Surfactant A 2.5 parts

Initiator A 1 part

Coupling agent 2.5 parts

Nano inorganic powder 10 parts

100 parts of water.

Wherein, the acrylic resin layer is formed by an acrylic resin emulsion, and the acrylic resin emulsion includes the following raw materials in parts by weight:

Butyl acrylate 35 parts

Ethylene glycol dimethacrylate 27.5 parts

2.5 parts of vinyl acetate

20 parts of dodecyl acrylate

Methyl methacrylate 17.5 parts

2.5 parts of surfactant B

Initiator B 1 part

125 parts of water.

The preparation method of the alkenoic acid resin emulsion of the present invention is as follows: taking the above raw materials, mixing uniformly at 60° C., curing and adjusting the resin viscosity to 900 CPS.

Wherein, the wallpaper base material is non-woven fabric.

Preferably, the organosilicon modified acrylate is composed of an organosilicon monomer and an acrylic monomer in a weight ratio of 2:45, and the organosilicon monomer is composed of γ-methacryloyloxypropyltrimethoxy Silane and vinyltriethoxysilane are composed in a weight ratio of 1:0.6, and the acrylic monomer is composed of butyl acrylate, ethyl acrylate and methyl p-methacrylate in a weight ratio of 10:3:0.5 .

Wherein, the surfactant A is composed of sodium lauryl sulfate and disproportionated rosin soap in a weight ratio of 1:0.6.

Wherein, the initiator A is composed of potassium persulfate and sodium persulfate in a weight ratio of 1:0.75.

Wherein, the surfactant B is composed of sodium lauryl sulfate and oleyl sulfate in a weight ratio of 1:0.6.

Wherein, the initiator B is composed of benzoyl peroxide and benzoyl tert-butyl peroxide in a weight ratio of 1:0.75.

Wherein, the coupling agent is a silane coupling agent, the nano-inorganic powder is nano-silica, and the method for treating the nano-silicon dioxide with the silane coupling agent is: adding 10 parts by weight of nanometer silica to 300 parts by weight of water Silica and 2.5 parts by weight of silane coupling agent are stirred and dispersed uniformly at 80° C., filtered, dried and ground to obtain silane coupling agent-treated nano-silica.

Wherein, the functional component is a flame retardant.

The preparation method of a kind of antifouling wallpaper as above, comprises the steps:

(1) Composite acrylic resin layer: use gravure printing, screen printing or flexographic printing to composite the acrylic resin emulsion on the surface of the substrate layer, and then carry out high-temperature curing reaction and drying at a temperature of 140-180 °C;

(2) Composite overcoat layer: composite the above-mentioned resin composition on the acrylic resin layer, and then perform a high-temperature curing reaction and drying at a temperature of 120-210° C. to obtain the anti-fouling wallpaper.

Example 3

As shown in Figure 1, the difference between this embodiment and Embodiment 2 is:

The organosilicon modified acrylate is composed of an organosilicon monomer and an acrylic monomer in a weight ratio of 2:45, and the organosilicon monomer is γ-methacryloyloxypropyltrimethoxysilane, so The acrylic monomer is butyl acrylate.

Example 4

As shown in Figure 1, the difference between this embodiment and Embodiment 2 is:

Wherein, the surfactant A is sodium stearate.

Wherein, the initiator A is benzoyl peroxide.

Example 5

As shown in Figure 1, the difference between this embodiment and Embodiment 2 is:

Among them, the surfactant B is sodium lauryl sulfate.

Wherein, the initiator B is tert-butyl benzoyl peroxide.

Example 6

As shown in Figure 1, the difference between this embodiment and Embodiment 2 is:

An antifouling wallpaper, comprising a wallpaper base material, an acrylic resin layer compounded on the wallpaper base material, and an overcoat layer compounded on the acrylic resin layer, wherein the overcoat layer is formed of a resin composition, and the resin composition is composed of The raw materials of the following parts by weight are composed:

Acrylic resin emulsion 100 parts

Silicone modified acrylate 40 parts

Surfactant A 0.1 part

Initiator A 0.1 part

Coupling agent 0.1 part

Nano inorganic powder 1 part

70 parts of water.

Wherein, the acrylic resin layer is formed by an acrylic resin emulsion, and the acrylic resin emulsion includes the following raw materials in parts by weight:

Butyl acrylate 25 parts

Ethylene glycol dimethacrylate 20 parts

20 parts of dodecyl acrylate

Methyl methacrylate 17.5 parts

Surfactant B 0.1 part

Initiator B 0.1 part

100 parts of water.

The preparation method of the alkenoic acid resin emulsion of the present invention is as follows: taking the above raw materials, mixing uniformly at 40° C., curing and adjusting the resin viscosity to 300 CPS, and using rotary screen printing.

Wherein, the organosilicon modified acrylate is composed of organosilicon monomer and acrylic monomer in a ratio of 1:40 by weight, and the organosilicon monomer is made of γ-methacryloyloxypropyltrimethoxysilane , vinyl triethoxysilane is composed of 1:0.2 by weight, and the acrylic monomer is composed of butyl acrylate, ethyl acrylate and methyl p-methacrylate in a proportion of 10:1:0.1 by weight.

Wherein, the surfactant A and the surfactant B are both composed of sodium lauryl sulfate and disproportionated rosin soap in a weight ratio of 1:0.2.

Wherein, the initiator A and the initiator B are both composed of potassium persulfate and sodium persulfate in a weight ratio of 1:0.5.

Wherein, the coupling agent is a silane coupling agent, the nano-inorganic powder is nano-silica, and the method for treating the nano-silica with the silane coupling agent is: adding 1 weight part of nanometer silica to 300 parts by weight of water Silica and 0.1 parts by weight of silane coupling agent were stirred and dispersed uniformly at 70° C., filtered, dried and ground to obtain silane coupling agent-treated nano-silica.

Wherein, the functional component is a mixture of antifungal agent and antibacterial agent.

The preparation method of a kind of antifouling wallpaper as above, comprises the steps:

(1) Composite acrylic resin layer: use screen printing to composite the acrylic resin emulsion on the surface of the substrate layer, and then perform a high-temperature curing reaction and drying at a temperature of 140-180 °C;

(2) Composite overcoat layer: composite the above-mentioned resin composition on the acrylic resin layer, and then perform a high-temperature curing reaction and drying at a temperature of 120-210° C. to obtain the anti-fouling wallpaper.

Example 7

As shown in Figure 1, the difference between this embodiment and Embodiment 2 is:

An antifouling wallpaper, comprising a wallpaper base material, an acrylic resin layer compounded on the wallpaper base material, and an overcoat layer compounded on the acrylic resin layer, wherein the overcoat layer is formed of a resin composition, and the resin composition is composed of The raw materials of the following parts by weight are composed:

Acrylic resin emulsion 100 parts

Silicone modified acrylate 60 parts

Surfactant A 5 parts

Initiator A 2 parts

Coupling agent 5 parts

Nano inorganic powder 20 parts

100 parts of water.

Wherein, the acrylic resin layer is formed by an acrylic resin emulsion, and the acrylic resin emulsion includes the following raw materials in parts by weight:

Butyl acrylate 35 parts

Ethylene glycol dimethacrylate 27.5 parts

5 parts vinyl acetate

Lauryl Acrylate 25 parts

25 parts methyl p-methacrylate

5 parts of surfactant B

Initiator B 2 parts

150 parts of water.

The preparation method of the alkenoic acid resin emulsion of the present invention is as follows: taking the above raw materials, mixing uniformly at 80° C., curing and adjusting the resin viscosity to 1500 CPS.

The organosilicon-modified acrylate is composed of silicon-acrylic resin and γ-methacryloyloxypropyltrimethoxysilane in a weight ratio of 1:(2.5-3.5). More preferably, the silicon-acrylic The resin selection model is PTL-RT819.

Wherein, the surfactant A and the surfactant B are both composed of sodium lauryl sulfate and disproportionated rosin soap in a ratio of 1:1 by weight.

Wherein, the initiator A and the initiator B are both composed of potassium persulfate and sodium persulfate in a ratio of 1:1 by weight.

Wherein, the coupling agent is a silane coupling agent, the nano-inorganic powder is nano-silica, and the method for treating the nano-silicon dioxide with the silane coupling agent is: adding 20 parts by weight of nanometer silica to 300 parts by weight of water Silica and 5 parts by weight of silane coupling agent are stirred and dispersed uniformly at 90° C., filtered, dried and ground to obtain nano-silica treated with silane coupling agent.

Wherein, the functional component is a conductive filler.

The preparation method of a kind of antifouling wallpaper as above, comprises the steps:

(1) Composite acrylic resin layer: using gravure printing, the acrylic resin emulsion is composited on the surface of the substrate layer, and then subjected to high temperature curing reaction and drying at a temperature of 140-180 °C;

(2) Composite overcoat layer: composite the above-mentioned resin composition on the acrylic resin layer, and then perform a high-temperature curing reaction and drying at a temperature of 120-210° C. to obtain the anti-fouling wallpaper.

Example 8

As shown in Figure 1, the difference between this embodiment and Embodiment 2 is:

An antifouling wallpaper, comprising a wallpaper base material, an acrylic resin layer compounded on the wallpaper base material, and an overcoat layer compounded on the acrylic resin layer, wherein the overcoat layer is formed of a resin composition, and the resin composition is composed of The raw materials of the following parts by weight are composed:

Acrylic resin emulsion 100 parts

Silicone modified acrylate 55 parts

Surfactant A 4 parts

Initiator A 0.5 part

Coupling agent 1.2 parts

Nano inorganic powder 12 parts

80 parts of water.

Wherein, the acrylic resin layer is formed by an acrylic resin emulsion, and the acrylic resin emulsion includes the following raw materials in parts by weight:

Butyl acrylate 30 parts

Ethylene glycol dimethacrylate 30 parts

2 parts vinyl acetate

16 parts of dodecyl acrylate

24 parts methyl p-methacrylate

3.5 parts of surfactant B

Initiator B 1.3 parts

130 parts of water.

The preparation method of the acrylic resin emulsion of the present invention is as follows: taking the above raw materials, mixing uniformly at 55° C., curing and adjusting the resin viscosity to 1000 CPS.

The wallpaper base material is wood pulp paper.

The organosilicon-modified acrylate is composed of silicon-acrylic resin and γ-methacryloyloxypropyltrimethoxysilane in a weight ratio of 1:(2.5-3.5). More preferably, the silicon-acrylic The resin selection model is PTL-RT819.

Wherein, preferably, the surfactant A and the surfactant B are both composed of sodium lauryl sulfate and disproportionated rosin soap in a weight ratio of 1:0.8.

Wherein, the initiator A and the initiator B are both composed of potassium persulfate and sodium persulfate in a weight ratio of 1:0.9.

Wherein, the coupling agent is a silane coupling agent, the nano-inorganic powder is nano-silicon dioxide, and the method for treating the nano-silicon dioxide with the silane coupling agent is: adding 12 weight parts of nanometer silica to 300 weight parts of water Silica and 1.2 parts by weight of silane coupling agent are stirred and dispersed uniformly at 75° C., filtered, dried and ground to obtain silane coupling agent-treated nano-silica.

Wherein, the functional component is luminous powder.

The preparation method of a kind of antifouling wallpaper as above, comprises the steps:

(1) Composite acrylic resin layer: use gravure printing, screen printing or flexographic printing to composite the acrylic resin emulsion on the surface of the substrate layer, and then carry out high-temperature curing reaction and drying at a temperature of 140-180 °C;

(2) Composite overcoat layer: composite the above-mentioned resin composition on the acrylic resin layer, and then perform a high-temperature curing reaction and drying at a temperature of 120-210° C. to obtain the anti-fouling wallpaper.

The present invention carries out the performance tests of adhesion, pencil hardness, water resistance, soy sauce resistance, ketchup resistance, contact angle and stain resistance for the wallpapers of Examples 1-8 and commercially available conventional PVC non-woven wallpapers, and the results are as follows datasheet as described in the table. Among them, the adhesion test is tested according to the GB/T 9286-88 standard; the pencil hardness test is tested according to the GB/T 6739-96 standard; the water resistance test is to soak the wallpaper in 40±2℃ for 240h, and observe the change of the appearance of the coating If the situation is different, test according to GB/T 1766-95 standard; soy sauce resistance and ketchup resistance test Apply the same amount of soy sauce or ketchup evenly on the surface of the wallpaper, cover it with a glass plate, and wipe it off with a cloth after standing for 24 hours Sauce, observe the change of the appearance of the coating; the contact angle test uses the SL200D contact angle tester to test the wettability to water; the stain resistance test is to apply some stains on the surface of the wallpaper for 24 hours and then use a neutral detergent and Clean with alcohol and observe the residue of stains.

The antifouling wallpaper of the invention has high hardness, adhesion and water resistance, is easy to clean, and basically has no smudge residue after cleaning, which solves the problem that the whole wallpaper must be replaced due to the contamination of the general wallpaper by sticky substances such as juice and sauce. question.

In addition, it should be noted that the selection and dosage of functional components in the present invention can be adjusted specifically according to performance requirements, and the selection and dosage of functional components have an impact on the strength, adhesion, water resistance, The properties such as soy sauce resistance and tomato resistance are basically not affected.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that , the technical solutions of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. an antifouling wallpaper, it is characterized in that: comprise wallpaper base material, the acrylic resin layer compounded on the wallpaper base material, the overcoat layer compounded on the acrylic resin layer, the overcoat layer is formed by resin composition, The resin composition is composed of the following raw materials in parts by weight: Wherein, the functional component is a mixture of one or more of antistatic agent, conductive filler, flame retardant, antifungal agent, antibacterial agent and luminous powder. 2. An antifouling wallpaper according to claim 1, wherein the acrylic resin layer is formed of an acrylic resin emulsion, and the acrylic resin emulsion comprises the following raw materials in parts by weight: 3. a kind of antifouling wallpaper according to claim 1 and 2, is characterized in that: described organosilicon-modified acrylate is silicone oil-modified acrylate, silicone rubber-modified acrylate, silicone resin-modified acrylate One or more mixtures of acrylates. 4. a kind of antifouling wallpaper according to claim 1 and 2, is characterized in that: described surfactant A is a kind of in sodium lauryl sulfate, oleyl sulfate, sodium stearate, disproportionated rosin soap or more than one mixture. 5. a kind of antifouling wallpaper according to claim 1 and 2, is characterized in that: described initiator A is potassium persulfate, sodium persulfate, azobisisobutyronitrile, benzoyl peroxide, peroxide One or more mixtures of tert-butyl benzoyl ester, methyl ethyl ketone peroxide, azobisisoheptanenitrile, and dimethyl azobisisobutyrate. 6. An antifouling wallpaper according to claim 1 or 2, characterized in that: the coupling agent is a silane coupling agent, and the nano-inorganic powder is nano-silica. 7. An antifouling wallpaper according to claim 1 or 2, wherein the thickness of the overcoat layer is 50-200 μm. 8. a kind of antifouling wallpaper according to claim 2 is characterized in that: the preparation method of described acrylic resin emulsion is: 25-45 weight part of butyl acrylate, 20-35 weight part of ethylene glycol diacrylate Methacrylate, 0-5 parts by weight of vinyl acetate, 15-25 parts by weight of dodecyl acrylate, 10-25 parts by weight of methyl p-methacrylate, 0.1-5 parts of surfactant B , 0.1-2 parts of initiator B and 100-150 parts of water are mixed evenly at 40-80 ℃, matured and adjusted resin viscosity to make acrylic resin emulsion. 9. a kind of antifouling wallpaper according to claim 6, is characterized in that: the preparation method of described resin composition comprises the steps: (1) Add 0.1-20 parts by weight of nano inorganic powder and 0.1-5 parts by weight of coupling agent to 300 parts by weight of water, stir and disperse evenly at 70-90° C., filter, dry and grind to obtain the nano-particles treated with coupling agent. silica; (2) In 100 parts by weight of the above-mentioned acrylic resin emulsion, add 40-60 parts by weight of organosilicon modified acrylate, add 70-100 parts by weight of water, 0.1-5 parts by weight of surfactant A and 0.1-2 parts by weight The initiator A is added at 130-170 ℃ under stirring by adding the nano-silicon dioxide treated by the coupling agent, then adding 0-30 parts of functional components, stirring and dispersing evenly, curing and adjusting the viscosity of the resin to obtain the resin composition. 10. the preparation method of a kind of antifouling wallpaper according to claim 2, is characterized in that: comprise the steps: (1) Composite acrylic resin layer: using gravure printing, screen printing or flexographic printing, the acrylic resin emulsion is composited on the surface of the substrate layer, and then a high temperature curing reaction and drying at a temperature of 140-180 ° C are performed; (2) Composite overcoat layer: composite the resin composition on the acrylic resin layer, and then perform a high-temperature curing reaction and drying at a temperature of 120-210° C. to obtain the anti-fouling wallpaper.