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High-hardness color plate and preparation method thereof

A high-hardness, color-plate technology, applied in coatings, metal material coating processes, epoxy resin coatings, etc., can solve the problems of increasing processing difficulty, easy agglomeration of inorganic fillers, and large compatibility, so as to reduce gloss Degree, improve product appearance, good compatibility effect

Inactive Publication Date: 2020-07-03
青岛河钢复合新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the relatively large particle size of the inorganic filler and its poor compatibility with the polymer, it needs to be fully ground before mixing it with the organic resin, and the inorganic filler is prone to agglomeration in the coating, which increases the difficulty of processing

Method used

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  • High-hardness color plate and preparation method thereof
  • High-hardness color plate and preparation method thereof

Examples

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preparation example Construction

[0042] Preparation example of talc powder The talc powder in the following preparation examples is selected from the talc powder with a fineness of 3000 mesh provided by Shanggao County Mingzheng Plastic Chemical Co., Ltd.

[0043] Take 100kg of talc powder, add 1.5kg of silane coupling agent KH570 into it, and stir for 0.5-1h at a temperature of 60-80°C to obtain surface-treated talc powder.

[0044] Preparation example of organic amine liquid curing agent The cycloaliphatic epoxy resin in the following preparation examples is selected from the cycloaliphatic epoxy resin of model 2021P provided by Daicel, Japan.

preparation example 1

[0045] Preparation example 1 of organic amine liquid curing agent: ①Take 15kg alicyclic epoxy resin and 15kg isopropanol, heat it to 80-90°C, add 2kg4,4'-diaminodiphenyl ether, keep warm for 0.5h, Obtain modified epoxy resin solution;

[0046] ②Take 13kg of isophoronediamine and 20kg of isopropanol, and heat it to 60°C to obtain an organic amine solution;

[0047] ③ Add the modified epoxy resin solution dropwise to the organic amine solution within 1 hour, and react for 1 hour at a temperature of 80°C; then add 2 kg of phthalic anhydride, stir and react for 30 minutes, heat to recover isopropanol, and then add 20kg of deionized water was stirred evenly to obtain an organic amine liquid curing agent.

preparation example 2

[0048] Preparation example 2 of organic amine liquid curing agent: ①Take 15kg of alicyclic epoxy resin and 15kg of isopropanol, heat it to 85°C, add 2kg of 4,4'-diaminodiphenyl ether, and keep it warm for 1 hour to obtain a modified Epoxy resin solution;

[0049] ②Take 13kg of isophoronediamine and 20kg of isopropanol, and heat it to 63°C to obtain an organic amine solution;

[0050] ③ Add the modified epoxy resin solution dropwise to the organic amine solution within 1.3 hours, and react for 2 hours at a temperature of 85°C; then add 2kg of phthalic anhydride, stir and react for 35 minutes, heat to recover isopropanol, and then Add 20kg of deionized water and stir evenly to obtain an organic amine liquid curing agent.

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Abstract

The invention discloses a high-hardness color plate and a preparation method thereof, and relates to the technical field of plates for household appliance shells. Key points of a technical scheme of the invention are as follows: the high-hardness color plate comprises a metal substrate, a chemical treatment layer formed on the surface of the metal substrate, a primer layer arranged on the chemicaltreatment layer and a finish paint layer arranged on the primer layer, wherein the finish paint layer comprises the following raw materials in parts by weight: 85 parts of polyester resin, 13 parts of epoxy resin, 0.1-1 part of an organic amine liquid curing agent, 0.5 part of a delustering agent and 1 part of a slipping agent. The high-hardness color plate provided by the invention has the advantages of high hardness, good flexibility, rich appearance and low surface gloss.

Description

technical field [0001] The invention relates to the technical field of boards used for housings of household appliances, more specifically, it relates to a high-hardness color board and a preparation method thereof. Background technique [0002] Coated sheet is also called color-coated sheet, also called organic coated sheet or pre-coated sheet. It is formed by coating or laminating various organic coatings or plastic films on the surface; it has the advantage of bright colors, so it is widely used in the shells of refrigerators, washing machines, air conditioners and other home appliances. [0003] The production process of home appliance color board can be divided into entrance section, pretreatment section, coating section and exit section. The pretreatment section includes pre-degreasing, inlet looper, degreasing cleaning, chemical coating treatment and drying, which can effectively clean the surface of the substrate to improve the adhesion of the coating to the substra...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D163/00C09D7/42C09D7/62C23C26/00
CPCC08L2205/025C08L2205/03C09D7/42C09D7/62C09D167/00C23C26/00C08L63/00C08K3/36C08K9/06C08K3/34
Inventor 赵军赵秀娟邹炎斌
Owner 青岛河钢复合新材料科技有限公司
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