阅读说明：本技术 一种含感光粉感光涂料及其制备方法 (photosensitive coating containing photosensitive powder and preparation method thereof ) 是由 罗德声 邝月辉 于 2019-11-27 设计创作，主要内容包括：本发明公开了一种含感光粉感光涂料及其制备方法,其涂料配方由以下原料质量配比制备：聚甲基苯基有机硅树脂10%～20%,聚乙基硅树脂10%～20%,功能填料10%～20%,高纯度羧基锌离子金属感光效果粉为10%～20%,胶乳10%～20%,助剂5%～10%,余量为溶剂。所制备的复合涂料,由于制备方法中加入高纯度羧基锌离子金属感光效果粉,具有赋予产品感光特性。本产品可用于造纸的涂料中,使纸产品具有感光性,使该特种纸用于某些特殊光感领域。(The invention discloses photosensitive coating containing photosensitive powder and a preparation method thereof, wherein the coating formula is prepared from the following raw materials, by mass, 10% -20% of polymethylphenyl silicone resin, 10% -20% of polyethyl silicone resin, 10% -20% of functional filler, 10% -20% of high-purity carboxyl zinc ion metal photosensitive effect powder, 10% -20% of latex, 5% -10% of auxiliary agent and the balance of solvent.)

photosensitive coating containing photosensitive powder, which is characterized in that the coating formula is prepared by the following raw materials, by mass, 10% -20% of polymethylphenyl silicone resin, 10% -20% of polyethyl silicone resin, 10% -20% of functional filler, 10% -20% of high-purity carboxyl zinc ion metal photosensitive effect powder, 10% -20% of latex, 5% -10% of auxiliary agent and the balance of solvent, wherein the preparation method comprises the following steps:

(1) adding the solvent, the functional filler and 60% of the high-purity carboxyl zinc ion metal photosensitive effect powder into a ball mill in required parts to prepare slurry;

(2) adding organic silicon base material, latex and auxiliary agent, carrying out high-speed ball milling and fully dispersing to uniformly mix the materials;

(3) adding a thickening agent, stirring at a low speed, spraying the residual high-purity carboxyl zinc ion metal photosensitive effect powder by using a spraying gun, sieving and thickening to form a coating finished product.

2. A photosensitive coating according to claim 1, wherein the functional filler is mica powder having a particle size of 500 to 1250 mesh.

3. A photosensitive coating according to claim 1, wherein said latex is a self-crosslinking acrylic emulsion, and the auxiliary comprises an ultraviolet absorber: hexamethylphosphoric triamide, 2-hydroxy-4-n-octoxy benzophenone and a dispersant: polyether modified siloxane and organic silicon modified polyether amide polymer, defoaming agent: polysiloxane solution, thickener: fumed silica.

4. The method for preparing photosensitive coating according to claim 1, wherein the high speed ball milling speed is 250 to 350 r/min.

5. A method for preparing a photosensitive coating according to claim 1, wherein the low-speed stirring speed is 50 to 70 r/min.

6. The method of claim 1, wherein the solvent is demineralized water.

Technical Field

The invention relates to composite coatings and a preparation method thereof, belonging to the field of fine chemical engineering.

Background

The photosensitive coating is generally a coating which does not change color and fall off under the irradiation of a fluorescent lamp or a strong light at normal temperature and can keep certain physical and mechanical properties so that an irradiated object can show silver color.

Disclosure of Invention

The invention provides photosensitive coatings containing photosensitive powder and a preparation method thereof, and the technical scheme is as follows:

photosensitive coatings containing photosensitive powder are prepared by the following raw materials, by mass, 10-20% of polymethylphenyl silicone resin, 10-20% of polyethyl silicone resin, 10-20% of functional filler, 10-20% of high-purity carboxyl zinc ion metal photosensitive effect powder, 10-20% of latex, 5-10% of auxiliary agent and the balance of solvent;

the preparation method comprises the following steps:

(1) adding the solvent, the functional filler and 60% of the high-purity carboxyl zinc ion metal photosensitive effect powder into a ball mill in required parts to prepare slurry;

(2) adding organic silicon base material, latex and auxiliary agent, carrying out high-speed ball milling and fully dispersing to uniformly mix the materials;

(3) adding a thickening agent, stirring at a low speed, spraying the residual high-purity carboxyl zinc ion metal photosensitive effect powder by using a spraying gun, sieving and thickening to form a coating finished product.

Preferably, the filler in the preparation method is mica powder, and the granularity of the filler is 500-1250 meshes.

Preferably, the latex in the preparation method is self-crosslinking acrylic emulsion, and the auxiliary agent comprises an ultraviolet absorbent: hexamethylphosphoric triamide, 2-hydroxy-4-n-octoxy benzophenone and a dispersant: polyether modified siloxane and organic silicon modified polyether amide polymer, defoaming agent: polysiloxane solution, thickener: fumed silica.

Preferably, the high-speed ball milling speed in the preparation method is 250-350 r/min.

Preferably, the low-speed stirring speed in the preparation method is 50-70 r/min.

Preferably, the solvent is demineralized water.

The prepared composite coating has a photosensitive function, can be used for special paper products for papermaking, overcomes the problem of high residual chlorine and bromine in photosensitive products, and partially sprays high-purity carboxyl zinc ion metal photosensitive effect powder into slurry in a preparation process, so that high-purity carboxyl zinc ion metal photosensitive effect powder particles are better mixed with the slurry, the coating photosensitivity is enhanced, and the oxidation resistance of the coating can be improved by adjusting the raw materials and the proportion of the coating.

Detailed Description

The present invention is further illustrated in by the following examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the invention.