阅读说明：本技术 一种水性自粘贴装饰布涂料及其制备方法 (Water-based self-adhesive decorative cloth coating and preparation method thereof ) 是由 张源 于 2020-07-14 设计创作，主要内容包括：本发明公开一种水性自粘贴装饰布涂料,涉及水性涂料技术领域,本发明主要由以下重量份数的原料制成：水性有机硅改性羟基丙烯酸树脂60-65份、聚醚改性聚二甲基硅氧烷5-6份、防腐剂0.1-0.2份、消泡剂0.2-0.4份、底材润湿剂0.5-0.7份、流平剂0.2-0.4份、附着力促进剂2-4份、增稠剂0.6-0.8份、pH调节剂0.3-0.5份、透明砂面粉8-10份、去离子水18-22份。本发明还提供上述涂料的制备方法。本发明的有益效果在于：本发明的水性自粘贴装饰布涂料,附着力好：能轻松涂布在自粘贴装饰布上；涂层弹性好：能随自粘贴装饰布自由转折；透明度好：使贴布上原图案自然显现；功能效果好。(The invention discloses a water-based self-adhesive decorative cloth coating, which relates to the technical field of water-based coatings and is mainly prepared from the following raw materials in parts by weight: 60-65 parts of water-based organic silicon modified hydroxyl acrylic resin, 5-6 parts of polyether modified polydimethylsiloxane, 0.1-0.2 part of preservative, 0.2-0.4 part of defoaming agent, 0.5-0.7 part of substrate wetting agent, 0.2-0.4 part of flatting agent, 2-4 parts of adhesion promoter, 0.6-0.8 part of thickening agent, 0.3-0.5 part of pH regulator, 8-10 parts of transparent sand flour and 18-22 parts of deionized water. The invention also provides a preparation method of the coating. The invention has the beneficial effects that: the water-based self-adhesive decorative cloth coating has good adhesive force: the coating can be easily coated on the self-adhesive mounting decorative cloth; the coating has good elasticity: can be freely turned along with the self-adhesive decorative cloth; the transparency is good: naturally showing the original pattern on the sticking cloth; the function effect is good.)

1. The water-based self-adhesive decorative cloth coating is characterized in that: the coating is a two-component coating consisting of a component A and a component B, wherein the component A is a main paint, the component B is water dispersible isocyanate, and the mass ratio of the main paint to the water dispersible isocyanate is 6: 1;

the water-based self-adhesive decorative cloth main paint is mainly prepared from the following raw materials in parts by weight: 60-65 parts of water-based organic silicon modified hydroxyl acrylic resin, 5-6 parts of polyether modified polydimethylsiloxane, 0.1-0.2 part of preservative, 0.2-0.4 part of defoaming agent, 0.5-0.7 part of substrate wetting agent, 0.2-0.4 part of flatting agent, 2-4 parts of adhesion promoter, 0.6-0.8 part of thickening agent, 0.3-0.5 part of pH regulator, 8-10 parts of transparent sand flour and 18-22 parts of deionized water.

2. The water-based self-adhesive mounting decorative cloth coating as claimed in claim 1, wherein: the main paint component is mainly prepared from the following raw materials in parts by weight: 63 parts of water-based organic silicon modified hydroxy acrylic resin, 5 parts of polyether modified polydimethylsiloxane, 0.1 part of preservative, 0.3 part of defoaming agent, 0.6 part of substrate wetting agent, 0.2 part of flatting agent, 2.5 parts of adhesion promoter, 0.6 part of thickening agent, 0.3 part of pH regulator, 10 parts of transparent sand flour and 17.4 parts of deionized water.

3. The water-based self-adhesive mounting decorative cloth coating as claimed in claim 1, wherein: the preservative comprises one or two of BIT and MIT.

4. The water-based self-adhesive mounting decorative cloth coating as claimed in claim 1, wherein: the defoamer comprises a non-silicon defoamer.

5. The water-based self-adhesive mounting decorative cloth coating as claimed in claim 1, wherein: the substrate wetting agent comprises one or two of acetylene glycol and organic silicon.

6. The water-based self-adhesive mounting decorative cloth coating as claimed in claim 1, wherein: the leveling agent comprises a non-silicon leveling agent.

7. The water-based self-adhesive mounting decorative cloth coating as claimed in claim 1, wherein: the preparation method of the main paint comprises the following steps:

(1) mixing half weight part of deionized water with a preservative, a defoaming agent, a substrate wetting agent and a flatting agent, adding water-based organic silicon modified hydroxy acrylic resin and polyether modified polydimethylsiloxane, adjusting the pH to 7.5-9.0, stirring, sampling by using a sampling scraper, stopping stirring until the sampling scraper has no shrinkage cavity, and controlling the temperature of a material system to be less than or equal to 60 ℃;

(2) continuously adding the adhesion promoter, adding the rest deionized water, adjusting the viscosity of the material system to 70-110KU by using the thickening agent, adding the pH regulator to adjust the pH value of the material system to 7.5-9.0, then adding the transparent sand flour, stirring, and filtering to obtain a filtrate, namely the main paint.

8. A method for preparing the water-based self-adhesive decorative cloth coating as defined in any one of claims 1 to 6, which is characterized in that: the method comprises the following steps:

(1) mixing half weight part of deionized water with a preservative, a defoaming agent, a substrate wetting agent and a flatting agent, adding water-based organic silicon modified hydroxy acrylic resin and polyether modified polydimethylsiloxane, adjusting the pH to 7.5-9.0, stirring, sampling by using a sampling scraper, stopping stirring until the sampling scraper has no shrinkage cavity, and controlling the temperature of a material system to be less than or equal to 60 ℃;

(2) continuously adding an adhesion promoter, adding the rest deionized water, adjusting the viscosity of the material system to 70-110KU by using a thickening agent, adding a pH regulator to adjust the pH value of the material system to 7.5-9.0, then adding transparent sand flour, stirring, and filtering to obtain a filtrate, namely the main paint;

(3) and mixing the prepared main paint with water dispersible isocyanate to obtain the water-based self-adhesive decorative cloth coating.

9. The method for preparing the water-based self-adhesive decorative cloth coating according to claim 8, wherein the method comprises the following steps: the stirring speed in the step (1) is 1250-1800 r/min.

Technical Field

The invention relates to the technical field of water-based paint, in particular to water-based self-adhesive decorative cloth paint and a preparation method thereof.

Background

Along with the development of urbanization, the requirement on urban civilization degree is higher and higher, the beautifying and decoration of municipal facilities such as power distribution cabinets, gas cabinets, telecommunication cabinets and the like are particularly important, and the traditional propaganda poster has poor durability, is easy to change color, scribble and write and is easy to stick small advertisements, thereby influencing the beauty of the city.

The self-adhesive decorative cloth coating prepared by the invention not only needs the coating to have good adhesive force on the self-adhesive decorative cloth, but also is not suitable for being used on the decorative cloth because the decorative cloth needs to be folded in the using process, and the coating in the prior art has low flexibility and can not be freely turned along with the self-adhesive decorative cloth in the using process.

Disclosure of Invention

The invention aims to solve the technical problem that the coating in the prior art cannot be freely turned along with the self-adhesive decorative cloth when in use, so that the use effect of decorative cloth is influenced, and the water-based self-adhesive decorative cloth coating is provided.

The invention solves the technical problems through the following technical means:

a water-based self-adhesive decorative cloth coating is a two-component coating consisting of a component A and a component B, wherein the component A is a main paint, the component B is water dispersible isocyanate, and the mass ratio of the main paint to the water dispersible isocyanate is 6: 1;

the water-based self-adhesive decorative cloth main paint A is mainly prepared from the following raw materials in parts by weight: 60-65 parts of water-based organic silicon modified hydroxyl acrylic resin, 5-6 parts of polyether modified polydimethylsiloxane, 0.1-0.2 part of preservative, 0.2-0.4 part of defoaming agent, 0.5-0.7 part of substrate wetting agent, 0.2-0.4 part of flatting agent, 2-4 parts of adhesion promoter, 0.6-0.8 part of thickening agent, 0.3-0.5 part of pH regulator, 8-10 parts of transparent sand flour and 18-22 parts of deionized water.

Has the advantages that: the key points of the invention are the matching use of the water-based organic silicon modified hydroxyl acrylic resin and the polyether modified polydimethylsiloxane, and the matching mass proportion, if the matching proportion is not in the range, the flexibility of the coating film is poor, and the anti-graffiti cleaning effect is not ideal. The application and the selection of the dosage of the substrate wetting agent and the transparent sand flour play a good auxiliary role for the invention, and the application and the selection of the dosage of the preservative, the thickening agent and the pH regulator enable the product system of the invention to be in a good storage stable state.

The coating of the water-based self-adhesive decorative cloth coating has good elasticity: the adhesive cloth can be freely turned along with the self-adhesive surface-mounted decorative cloth, so that the use effect is improved; the adhesive force is good, and the self-adhesive decorative cloth can be easily coated on self-adhesive decorative cloth (which has self-adhesive property but has no anti-doodling self-cleaning function); the transparency is good: naturally showing the original pattern on the sticking cloth; the function effect is good: the coating is anti-graffiti, anti-small advertisement sticking, durable and non-discoloring. Can be applied to municipal facilities such as power distribution cabinets, gas cabinets and telecommunication cabinets.

Preferably, the main paint A component is mainly prepared from the following raw materials in parts by weight: 63 parts of water-based organic silicon modified hydroxy acrylic resin, 5 parts of polyether modified polydimethylsiloxane, 0.1 part of preservative, 0.3 part of defoaming agent, 0.6 part of substrate wetting agent, 0.2 part of flatting agent, 2.5 parts of adhesion promoter, 0.6 part of thickening agent, 0.3 part of pH regulator, 10 parts of transparent sand flour and 17.4 parts of deionized water.

Preferably, the main paint A component is mainly prepared from the following raw materials in parts by weight: 65 parts of water-based organic silicon modified hydroxy acrylic resin, 6 parts of polyether modified polydimethylsiloxane, 0.2 part of preservative, 0.4 part of defoaming agent, 0.7 part of substrate wetting agent, 0.4 part of flatting agent, 4 parts of adhesion promoter, 0.8 part of thickening agent, 0.5 part of pH regulator, 10 parts of transparent sand flour and 22 parts of deionized water.

Preferably, the preservative comprises two mixtures of BIT, Methylisothiazolinone (MIT).

Has the advantages that: the preservative does not contain formaldehyde, heavy metal and halogen, has low smell, small stimulation to human bodies, broad-spectrum sterilization and corrosion prevention and long-acting protection effect on systems.

Preferably, the defoamer comprises a non-silicon defoamer.

Has the advantages that: good defoaming effect, good compatibility and difficult shrinkage and oil leakage.

Preferably, the substrate wetting agent comprises two complexes of acetylenic diols, silicones.

Has the advantages that: has extremely low dynamic and static surface tension, unstable foam, good acid-base stability and low water sensitivity.

Preferably, the leveling agent includes a non-silicon-based leveling agent.

Has the advantages that: good compatibility, long wave leveling and later leveling effect.

Preferably, the adhesion promoter comprises an epoxy modified silane oligomer.

Has the advantages that: can assist in promoting the extensibility of the coating film and the adhesion to the self-adhesive decorative cloth.

Preferably, the thickener comprises a non-ionic polyurethane thickener.

Has the advantages that: providing a low shear, high shear thickening effect.

Preferably, the pH adjuster comprises an organic amine.

Has the advantages that: low smell and high effect.

Preferably, the preparation method of the main paint A component comprises the following steps:

(1) mixing half weight part of deionized water with a preservative, a defoaming agent, a substrate wetting agent and a leveling agent, adding water-based organic silicon modified hydroxy acrylic resin and polyether modified polydimethylsiloxane, fully stirring, adjusting the pH value of a system to 7.5-9.0 by using a pH adjusting agent, sampling by using a sampling scraper, stopping stirring until the sampling scraper has no shrinkage cavity, and controlling the temperature of a material system to be less than or equal to 60 ℃;

(2) continuously adding the adhesion promoter, adding the rest deionized water, adjusting the viscosity of the material system to 70-110KU by using the thickening agent, adding the pH regulator to adjust the pH value of the material system to 7.5-9.0, then adding the transparent sand flour, stirring, and filtering to obtain a filtrate, namely the main paint.

Preferably, the stirring speed in the step (1) is 1250-1800 r/min.

The invention aims to solve the technical problem that the coating in the prior art cannot be freely turned along with self-adhesive decorative cloth when in use, so that the use effect of decorative cloth is influenced, and provides a preparation method of the water-based self-adhesive decorative cloth coating.

The invention solves the technical problems through the following technical means:

a preparation method of a water-based self-adhesive decorative cloth coating comprises the following steps:

(1) mixing half weight part of deionized water with a preservative, a defoaming agent, a substrate wetting agent and a flatting agent, adding water-based organic silicon modified hydroxy acrylic resin and polyether modified polydimethylsiloxane, stirring uniformly, adjusting the pH value of a system to 7.5-9.0 by using a pH adjusting agent, sampling by using a sampling scraper, stopping stirring until the sampling scraper has no shrinkage cavity, and controlling the temperature of a material system to be less than or equal to 60 ℃;

(2) continuously adding an adhesion promoter, adding the rest deionized water, adjusting the viscosity of the material system to 70-110KU by using a thickening agent, adding a pH regulator to adjust the pH value of the material system to 7.5-9.0, then adding transparent sand flour, stirring, and filtering to obtain a filtrate, namely the main paint;

(3) and mixing the prepared main paint A component with the B component water dispersible isocyanate to obtain the water-based self-adhesive decorative cloth coating.

Has the advantages that: the main paint A component of the invention takes water-based organic silicon modified hydroxy acrylic resin as a main film forming substance, polysiloxane chain segments in the resin provide extremely low surface tension for a coating, and hydroxyl groups provided by the polyacrylic chain segments are reacted through hydroxyl groups, so that the polysiloxane chain segments are fixed on the surface of the coating, thereby not only bringing excellent smoothness, but also leading the coating to have good toughness and weather resistance. In the formula of the main paint A component, 5-6 parts of polyether modified polydimethylsiloxane auxiliary agent and 8-10 parts of transparent sand flour are introduced, so that the smoothness of main resin is enhanced, and graffiti and small advertisements are more difficult to attach.

The main paint A component and the B component are crosslinked by water dispersible isocyanate component, and the construction mass ratio of the A component to the B component is controlled at 6: 1.

The preparation method is simple, the dispersion medium in the preparation process is water, only a very small amount of organic solvent is used, and the Volatile Organic Compound (VOC) is extremely low, so that the preparation method is beneficial to environmental protection and the health of constructors.

The invention has the advantages that:

(1) the main paint A component of the invention takes water-based organic silicon modified hydroxy acrylic resin as a main film forming substance, polysiloxane chain segments in the resin provide extremely low surface tension for a coating, and hydroxyl groups provided by the polyacrylic chain segments are reacted through hydroxyl groups, so that the polysiloxane chain segments are fixed on the surface of the coating, thereby not only bringing excellent smoothness, but also leading the coating to have good toughness and weather resistance. In the main paint formula, 5-6 parts of polyether modified polydimethylsiloxane and 8-10 parts of transparent sand flour are introduced, so that the smoothness of main resin is enhanced, and graffiti and small advertisements are more difficult to attach.

(2) The dispersion medium is deionized water, only a very small amount of organic solvent is used, the VOC is extremely low, zero VOC emission can be considered, the construction diluent is pure tap water, the environment protection and the health of constructors are facilitated, the resources are saved, and the environment is protected.

(3) The water-based self-adhesive decorative cloth coating has good adhesive force: the coating can be easily coated on the self-adhesive mounting decorative cloth; the coating has good elasticity: the adhesive cloth can be freely turned along with the self-adhesive surface-mounted decorative cloth, so that the use effect is improved; the transparency is good: naturally showing the original pattern on the sticking cloth; the function effect is good: the coating is anti-graffiti, anti-small advertisement sticking, durable and non-discoloring. Can be widely applied to municipal facilities such as power distribution cabinets, gas cabinets and telecommunication cabinets.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Test materials, reagents and the like used in the following examples are commercially available unless otherwise specified.