A sand grain epoxy powder coating

An epoxy powder and coating technology, applied in the field of powder coatings, can solve the problems of chemical resistance, high temperature resistance, poor impact resistance, poor medium penetration resistance, poor long-term anti-corrosion effect, etc., and achieves high cross-linking density. , The effect of reducing daily maintenance and cleaning, excellent internal quality

Active Publication Date: 2019-01-04
北京富耐恩电子设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, it can be seen from the structure of ordinary bisphenol A epoxy resin that the epoxy group is only on the end group, so the cross-linking density of the coating film is low and has good flexibility, but the chemical resistance, high temperature resistance, and Relatively poor impact
Therefore, the prepared coating has poor medium permeability resistance and poor long-term anticorrosion effect.

Method used

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  • A sand grain epoxy powder coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] 1. Weigh the components according to the following mass ratios,

[0062] 60 parts of modified epoxy resin

[0063] 1 part acrylic polymer

[0064] 60 parts of polyester resin

[0065] Coupling agent modified pigment 3 parts

[0066] 60 parts of coupling agent modified filler

[0067] Nano calcium carbonate 3 parts

[0068] Sand texture agent 0.2 parts

[0069] Hardening agent 1 part

[0070] Modified epoxy resin is one or more in chemical formula A, chemical formula B;

[0071] The chemical formula A is

[0072] ,

[0073] The chemical formula B is

[0074] ;

[0075] The preparation method of the coupling agent modified pigment is as follows:

[0076] Measure 35 parts of silane coupling agent and 65 parts of pigment respectively according to the mass ratio, add the silane coupling agent into the pigment evenly and mix the materials at the same time to make the mixture uniform.

[0077] The preparation method of coupling agent modified filler is as follo...

Embodiment 2

[0083] 1. Weigh the components according to the following mass ratios,

[0084] Modified epoxy resin 90 parts

[0085] Acrylic polymer 2 parts

[0086] 90 parts of polyester resin

[0087] Coupling agent modified pigment 10 parts

[0088] Coupling agent modified filler 90 parts

[0089] Nano calcium carbonate 5 parts

[0090] Sand texture agent 0.4 parts

[0091] Hardening agent 1.5 parts

[0092] 3.5 parts of loosening agent,

[0093] Modified epoxy resin is one or more in chemical formula A, chemical formula B;

[0094] The chemical formula A is

[0095] ,

[0096] The chemical formula B is

[0097] ;

[0098] The preparation method of the coupling agent modified pigment is as follows:

[0099] Measure 30 parts of silane coupling agent and 60 parts of pigment respectively according to the mass ratio, add the silane coupling agent evenly into the pigment and mix the materials at the same time, so that the mixture is uniform.

[0100] The preparation method of...

Embodiment 3

[0106] 1. Weigh the components according to the following mass ratios,

[0107] Modified epoxy resin 70 parts

[0108] Acrylic polymer 1.3 parts

[0109] 70 parts of polyester resin

[0110] Coupling agent modified pigment 6 parts

[0111] Coupling agent modified filler 70 parts

[0112] Nano calcium carbonate 4 parts

[0113] Sand texture agent 0.3 parts

[0114] Hardening agent 2 parts

[0115] 1 part loosening agent,

[0116] Modified epoxy resin is one or more in chemical formula A, chemical formula B;

[0117] The chemical formula A is

[0118] ,

[0119] The chemical formula B is

[0120] ;

[0121] The preparation method of the coupling agent modified pigment is as follows:

[0122] Measure 40 parts of silane coupling agent and 70 parts of pigment respectively according to the mass ratio, add silane coupling agent evenly into the pigment and mix the materials at the same time to make the mixture uniform.

[0123] The preparation method of coupling agent...

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Abstract

The invention relates to the technical field of powdery paints, and specifically discloses a sand-textured epoxy powdery paint. The matrix material of the paint is composed of modified epoxy resin with poly-functionality and a polyester resin curing agent, and has a high crosslinking density. The pigment and filler are composed of a coupling agent modified pigment and a coupling agent modified filler, compared with the conventional pigment and filler, the provided pigment and filler have a lower surface tension and better dispersibility and wettability, and thus the pigment and filler can be more evenly dispersed into the matrix material, so that the coating has a beautiful appearance, clear textures and good hand feeling. Acrylate polymers are taken as the levelling agent, a sand texturing agent is added, and a nano material is added to improve the paint performance such as anti-aging performance, solvent resistant performance, corrosion resistant performance, stain resistant performance, and the like. The coating made of the provided sand-textured expoxy powdery paint has a good adhesive force and good performance on resisting chemicals, high temperature, and impact, can play a protective effect in a large temperature range, and has a good effect on resisting medium corrosion and long-acting anticorrosive effect.

Description

technical field [0001] The invention relates to the technical field of powder coatings. Background technique [0002] Generally, the resin used in epoxy powder coatings is bisphenol A epoxy resin, and its molecular structure is: [0003] [0004] The two ends of the ordinary bisphenol A epoxy resin molecule are epoxy groups with strong reaction ability. There are many ether bonds on the main chain of the molecule. It is a linear polyether structure. The resin molecular chain with a large n value has regular There are many secondary hydroxyl groups in the ground and far away, which can be regarded as a long-chain polyol, and there are a large number of benzene rings, methine and isopropyl groups on the main chain. Each structural unit of epoxy resin endows the resin with the following functions: epoxy group and hydroxyl endow the resin with reactivity, so that the cured resin has strong cohesion and adhesion. Ether bonds and hydroxyl groups are polar groups that contribu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D7/62C09D5/28
CPCC08K2201/011C08L2201/08C08L2205/025C08L2205/035C09D5/032C09D5/035C09D7/61C09D7/62C09D163/00C08L33/04C08L67/00C08L27/18C08L23/26C08K9/06C08K2003/265C08L63/00C08K3/36
Inventor 高建军
Owner 北京富耐恩电子设备有限公司
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