Defoaming agent suitable for curtain coating of mirror back coating, preparation method of defoaming agent and mirror back coating

A technology of defoaming agent and spray-coated mirror, applied in the direction of coating, etc., can solve the problems such as the need to improve the anti-foaming performance, the broken screen, the poor quality of the mirror back coating, so as to reduce the broken screen phenomenon and reduce the bubbles on the board surface , the effect of improving compatibility

Active Publication Date: 2022-03-22
TIANJIN CITY XINLIHUA COLOR MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when traditional defoamers are added to the mirror back coating, it is easy to cause curtain breakage, and the antifoaming performance needs to be improved, making the finished mirror back coating of poor quality

Method used

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  • Defoaming agent suitable for curtain coating of mirror back coating, preparation method of defoaming agent and mirror back coating
  • Defoaming agent suitable for curtain coating of mirror back coating, preparation method of defoaming agent and mirror back coating
  • Defoaming agent suitable for curtain coating of mirror back coating, preparation method of defoaming agent and mirror back coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of defoamer suitable for curtain coating mirror back coating, its raw material content is shown in table 1.

[0043] Wherein, the fluorine-containing acrylic acid monomer is trifluoroethanol acrylate;

[0044] The hydroxyl-containing acrylic acid monomer is hydroxypropyl acrylate;

[0045] The acrylic monomer without fluorine and hydroxyl is butyl acrylate;

[0046] The initiator is azobisisobutyronitrile (AIBN).

[0047] A kind of preparation method that is applicable to the defoamer of curtain coating mirror back coating, it comprises the following steps:

[0048]Add xylene and butyl acetate into the reaction kettle, stir until mixed evenly, and then raise the temperature to 100°C to obtain Mixture I; add fluorine-containing acrylic monomer, hydroxyl-containing acrylic monomer, , the initiator is added in the mixer, and stirred until it is evenly mixed to obtain the mixture II;

[0049] Under the condition of heat preservation, add the mixture II to the mix...

Embodiment 2-4

[0051] Embodiment 2-4 is applicable to the defoamer of coating mirror back coating, and its difference with embodiment 1 is:

[0052] The types and contents of the raw materials of the defoamer are different, and the contents of the raw materials are shown in Table 1;

[0053] Among the types of raw materials: the fluorine-containing acrylic monomer in Example 2 is trifluoroethyl methacrylate, and the hydroxyl-containing acrylic monomer is hydroxyethyl methacrylate; the fluorine-containing acrylic monomer in Example 3 is pentafluoropropyl acrylate 1. The hydroxyl-containing acrylic acid monomer is hydroxypropyl acrylate; the fluorine-containing acrylic monomer of embodiment 4 is a mixture of pentafluoropropyl acrylate and methacrylate-free fluorine-free propyl ester, and the two are mixed in equal amounts; the hydroxyl-containing acrylic monomer is Hydroxypropyl methacrylate and hydroxyethyl acrylate mixed in equal amounts;

[0054] All the other are identical with embodiment...

Embodiment 5

[0056] A kind of defoamer that is applicable to the mirror back coating of flow coating, its difference with embodiment 2 is that the content of hydroxyl-containing acrylic acid monomer is 40.5kg, all the other are the same as embodiment 2.

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PUM

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Abstract

The invention relates to the technical field of defoaming agents, and particularly discloses a defoaming agent suitable for curtain coating of a mirror back coating, a preparation method of the defoaming agent and the mirror back coating. The defoaming agent suitable for curtain coating of the mirror back coating comprises the following raw materials: a fluorine-containing acrylic monomer, a hydroxyl-containing acrylic monomer, an acrylic monomer without fluorine and hydroxyl, xylene, butyl acetate, an initiator and a silane coupling agent, wherein the initiator is one or more of dicumyl peroxide, benzoyl peroxide and azodiisobutyronitrile; the defoaming agent prepared in the invention has high defoaming performance and foam inhibition performance, hydroxyl in the hydroxyl-containing acrylic monomer is crosslinked with amino in the coating, CASS of a mirror back coating product is also protected to a certain extent, and meanwhile, the initiator is compounded to ensure that the prepared polymer does not cause a broken screen phenomenon, so that the defoaming agent has high defoaming performance and foam inhibition performance. And the coating has good compatibility with a mirror back coating, and meets the market demand.

Description

technical field [0001] The application relates to the technical field of defoamers, more specifically, it relates to a defoamer suitable for curtain coating mirror back coatings, a preparation method thereof and mirror back coatings. Background technique [0002] In order to enable the mirror to clearly and brightly reflect the scene in front of the mirror, the back of the mirror is usually coated with a reflective material. Commonly used reflective materials are usually metal aluminum and silver, and mirrors can be divided into two categories: aluminum mirrors and silver mirrors according to the material of the reflective materials. In order to reduce the contact between the reflective material and the air, thereby reducing the corrosion of the reflective material by water vapor and other substances, it is usually necessary to coat a layer of paint on the reflective material as a protective film to reduce the damage or denaturation of the reflective material, so that the mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/20C08F220/24C09D7/65C09D133/00
CPCC08F220/1804C09D7/65C09D133/00C08F220/20C08F220/24C08L33/066Y02E10/40
Inventor 赵洪庆张崇明
Owner TIANJIN CITY XINLIHUA COLOR MATERIAL
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