阅读说明：本技术 一种特殊领域用感光涂料及其制备方法 (Photosensitive coating for special fields and preparation method thereof ) 是由 罗德声 邝月辉 于 2019-11-29 设计创作，主要内容包括：本发明公开了一种特殊领域用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：有机硅基料为20％～30％,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 a photosensitive coating for special fields and a preparation method thereof, wherein the coating formula is prepared from the following raw materials in parts by mass: 20-30% of organic silicon base material, 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 prepared composite coating has the photosensitive characteristic of the product due to the addition of the high-purity carboxyl zinc ion metal photosensitive effect powder in the preparation method. The product can be used in the coating for papermaking, so that the paper product has photosensitivity, and the special paper is used in some special light sensation fields.)

1. The photosensitive coating for the special field is characterized by being prepared from the following raw materials in parts by mass: 20-30% of organic silicon base material, 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 auxiliary agent is an ultraviolet absorbent, a dispersing agent and a defoaming agent.

2. A photosensitive coating according to claim 1, wherein the preparation method uses the steps of:

(1) adding the required parts of solvent, functional filler and high-purity carboxyl zinc ion metal photosensitive effect powder into a ball mill 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 the thickening agent, stirring at low speed, sieving and thickening to form a coating finished product.

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

4. A photosensitive coating according to claim 1 or 2, wherein the 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.

5. The method for preparing photosensitive coating according to claim 2, wherein the high speed ball milling speed is 250 to 350 r/min.

6. A method for preparing a photosensitive coating according to claim 2, wherein the low-speed stirring speed is 50 to 70 r/min.

7. A photosensitive coating according to claim 1 or 2, wherein the solvent is demineralized water.

Technical Field

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

Background

The photosensitive coating generally refers to a coating which does not change color or 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 display silver color. The coating can be applied to the field of papermaking, endows paper with special performance, and is used in working areas with poor light intensity such as wrapping paper marks, environment-friendly paper signboard and the like. Meanwhile, the high-temperature resistant coating has a plurality of good performances such as weather resistance by adjusting the formula of the coating, so that the product can be used in a wider natural area.

Disclosure of Invention

The invention provides a photosensitive coating for special fields and a preparation method thereof, and the technical scheme is as follows:

a photosensitive coating for special fields is prepared from the following raw materials in parts by mass: 20-30% of organic silicon base material, 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 water, functional filler and high-purity carboxyl zinc ion metal photosensitive effect powder in required parts into a ball mill to prepare slurry;

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

(3) adding the thickening agent, stirring at low speed, 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 in the preparation method is softened water.

The invention has the advantages that the prepared composite coating has photosensitive function, can be used for special paper products for papermaking, overcomes the defects of high residual amount of chlorine and bromine in common photosensitive products, and improves the durability of the products.

Detailed Description

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