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A kind of LED spraying white primer and preparation method thereof

A technology of white primer and resin, applied in the direction of primer, coating, polyester coating, etc., can solve the problems of oxygen inhibition and poor adhesion of white primer, so as to reduce oxygen inhibition, improve adhesion, improve The effect of paint film quality

Active Publication Date: 2022-05-13
SHANGHAI CHANGRUNFA PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Through the above-mentioned related technologies, during the curing process of LED spray white primer, due to the high oxygen concentration in the surface layer, the problem of oxygen inhibition is prone to occur, so that the lower layer is cured and the surface layer is not cured, which in turn leads to poor adhesion of the cured white primer The problem

Method used

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  • A kind of LED spraying white primer and preparation method thereof
  • A kind of LED spraying white primer and preparation method thereof
  • A kind of LED spraying white primer and preparation method thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0051] Embodiment 1: a kind of LED spraying white primer, included concrete component and weight are as shown in table 2, are made by following steps:

[0052] S1: adding the solid thermoplastic acrylic resin into the hexanediol diacrylate monomer, and mixing evenly to obtain the monomer-dissolved solid thermoplastic acrylic resin; wherein the solid thermoplastic acrylic resin has a molecular weight of 40000 and a solid content of 30%;

[0053]S2: Mix hyperbranched acrylic resin, monomer-dissolved solid thermoplastic acrylic resin, acrylate monomer, anatase titanium dioxide, 1100 mesh talc powder and defoamer, and stir at a stirring speed of 1200r / min. After stirring evenly, add The photoinitiator, the amine co-initiator, and the low-viscosity polyester acrylic resin continue to be stirred until they are evenly stirred to obtain a primary white primer for LED spraying with a particle size of 53±2 μm; the viscosity of the low-viscosity polyester acrylic resin is 150CPS.

[0054...

Embodiment 2

[0055] Embodiment 2: a kind of LED spraying white primer, the difference with embodiment 1 is that the molecular weight of solid thermoplastic acrylic resin is 40000, and solid content is 30%; Titanium dioxide is anatase type titanium dioxide, and the talc particle diameter is 1200 mesh, the viscosity of the low-viscosity polyester acrylic resin is 250CPS, and the particle size of the obtained primary product is 55 μm; the stirring speed in step S3 is 400r / min, and the stirring time is 12min. The specific components and weight included are shown in Table 2 shown.

Embodiment 3

[0056] Embodiment 3: a kind of LED spraying white primer, the difference with embodiment 1 is that the solid content of solid thermoplastic acrylic resin is 35%.

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Abstract

The invention relates to the technical field of coatings, and specifically discloses a white primer for LED spraying and a preparation method thereof, which consists of the following components in parts by weight: 4-6 parts of monomer-dissolved solid thermoplastic acrylic resin; 15-parts of hyperbranched acrylic resin 25 parts; 20-32 parts of low-viscosity polyester acrylic resin; 10-20 parts of acrylate monomer; 10-15 parts of titanium dioxide; 18-22 parts of talc; 0.4-0.6 parts of defoamer; 4 parts; 2-4 parts of amine co-initiator; monomer dissolved solid thermoplastic acrylic resin is composed of 14-17% by weight solid thermoplastic acrylic resin and the balance of hexanediol diacrylate monomer; low viscosity The viscosity of the polyester acrylic resin is 150-250CPS; the white primer for LED spraying of the application has the advantage of strong adhesion.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a white primer for LED spraying and a preparation method thereof. Background technique [0002] The primer is the first layer of the paint system, which is used to improve the adhesion of the topcoat, increase the fullness of the topcoat, etc., and at the same time ensure the uniform absorption of the topcoat, so that the paint system can play the best effect; the primer is generally white, Commonly known as white primer. [0003] The traditional white primers on the market are usually UV sprayed white primers, which are mainly cured by high-pressure mercury lamps. However, certain organic solvents need to be added to dilute them during use, resulting in excessive VOC during use, and high-pressure mercury lamps Ozone will be generated during use, which will pollute the environment greatly. With the development of science and technology, people gradually adopt LED spraying prim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/06C09D133/00C09D5/00C09D7/61C09D7/80
CPCC09D167/06C09D133/00C09D5/002C09D7/61C09D7/80C08K2003/2241C08L33/00C08K3/22C08K3/34C08L67/06
Inventor 叶谦周灿
Owner SHANGHAI CHANGRUNFA PAINT