PCM plate for air conditioner outdoor unit and production process of PCM plate

A technology for outdoor units and substrates of air conditioners, which can be applied to coatings, special surfaces, pretreated surfaces, etc., and can solve the problems of salt spray corrosion of color-coated panels, poor tensile properties of top coats and base coats, and achieve strong resistance. Corrosion performance, good corrosion resistance effect, anti-corrosion effect

Active Publication Date: 2019-11-22
杭州普络飞新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing corrosion-resistant nano-graphene color-coated board makes full use of the excellent mechanical properties, chemical stability and hydrophobic properties of graphene, and improves the overall corrosion resistance of the color-coated board. However, if this corrosion-resistant nano-graphene When the color-coated board is made into an air-conditioning outdoor unit and is used in the hot and humid climate of the coastal area, both the top coat and the bottom coat will be stretched during the processing, stamping and bending of the color-coated board, and the top coat The tensile properties of the base coat and the base coat are poor, and there will be some fine gaps between the coat and the base coat after stretching, and the temperature of the outdoor unit of the air conditioner will increase during use, which will accelerate the penetration of salt spray particles in the air into the coat. Between the layer and the substrate, causing salt spray corrosion of the color-coated board

Method used

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  • PCM plate for air conditioner outdoor unit and production process of PCM plate
  • PCM plate for air conditioner outdoor unit and production process of PCM plate
  • PCM plate for air conditioner outdoor unit and production process of PCM plate

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0043] Preparation Example 1: According to the raw material ratio in Table 1, dry 19g of polytetrahydrofuran diol at 80°C for 2 hours at a constant temperature, take it out, add 9g of castor oil, 0.5g of dibutyl dilaurate, 3g of 1,4-butanediol Alcohol, 11g isophorone diisocyanate and 5g dimethylolpropionic acid, stirred for 2h, added 2g of hydroxyethyl methacrylate to continue the reaction for 0.8h, cooled to 35°C, added 5g of triethylamine for neutralization for 30min, added 50g of deionized water was stirred for 30 minutes, 2.5g of sodium lauryl sulfate, 1.1g of potassium persulfate and 20g of 2-perfluorooctyl ethyl acrylate were added, and stirred for 3 hours to obtain a modified waterborne polyurethane.

[0044] The raw material consumption of castor oil modified waterborne polyurethane in table 1 preparation example 1-3

[0045]

preparation example 2

[0046] Preparation Example 2: According to the ratio of raw materials in Table 1, 20g of polytetrahydrofuran diol was dried at a constant temperature of 85°C for 1.5h, taken out, and added with 9.5g of castor oil, 0.55g of dibutyl dilaurate, 3.5g of 1,4 -Butanediol, 12g isophorone diisocyanate and 5.5g dimethylol propionic acid, stirred for 2.5h, added 2.5g hydroxyethyl methacrylate to continue the reaction for 0.9h, cooled to 38°C, added 5.5g tris Ethylamine was neutralized for 28 minutes, 55g of deionized water was added, stirred for 28 minutes, 2.8g of sodium lauryl sulfate, 1.3g of potassium persulfate and 25g of 2-perfluorooctyl ethyl acrylate were added, and stirred for 3.5 hours to obtain the modified Waterborne polyurethane.

preparation example 3

[0047] Preparation Example 3: According to the raw material ratio in Table 1, dry 21g of polytetrahydrofuran diol at 90°C for 1 hour at a constant temperature, take it out, add 11g of castor oil, 0.6g of dibutyl dilaurate, 6g of 1,4-butanediol Alcohol, 13g isophorone diisocyanate and 6g dimethylolpropionic acid, stirred for 3h, added 3g hydroxyethyl methacrylate to continue the reaction for 1h, cooled to 40°C, added 6g triethylamine for neutralization for 25min, added 50g Deionized water, stirred for 25 minutes, added 3g of sodium lauryl sulfate, 1.5g of potassium persulfate and 30g of 2-perfluorooctyl ethyl acrylate, stirred for 4 hours to prepare a modified waterborne polyurethane.

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Abstract

The invention discloses a PCM plate for an air conditioner outdoor unit and a production process of the PCM plate. The PCM plate for the air conditioner outdoor unit comprises a finish paint layer, aprimer layer, a passivation layer, a base plate, a passivation layer, a primer layer and a back paint layer which are sequentially stacked. The finish paint layer comprises the following components: castor oil modified waterborne polyurethane, modified carbon fibers, vinylidene chloride resin, acetone, titanium dioxide, deionized water, barium sulfate, a flatting agent, a coalescing agent, a dispersing agent and polyether modified organosiloxane; the primer layer comprises the following components: waterborne polyurethane dispersoid, modified nano zinc oxide, hexafluorobutyl acrylate, nano silicon dioxide, chlorinated paraffin, a nano lotus leaf water repellent agent, a flatting agent, a coalescing agent, a dispersing agent, polyether modified organosiloxane and deionized water. The PCM plate for the air conditioner outdoor unit has the advantages that the coating tensile property is good, the edge is not prone to cracking, and the temperature and salt mist corrosion resistance is excellent.

Description

technical field [0001] The invention relates to the technical field of color-coated boards, more specifically, it relates to a PCM board for an air conditioner outdoor unit and a production process thereof. Background technique [0002] PCM board refers to color-coated steel plate, which is composed of substrate and coating. It not only has the mechanical strength and easy-to-form performance of steel plate, but also has the advantages of good decoration, corrosion resistance and aesthetics of organic materials. It is easy to process and shape, environmentally friendly and energy-saving. , cost saving and other significant advantages, this year the application has been expanding from the construction field to the home appliance field. At present, some home appliances such as refrigerators, washing machines and other products have lower requirements for plate processing and stamping in batches and mature applications of prepainted steel plates . For products or components wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/06C09D7/40C09D7/61C09D7/62C09D7/65C09D175/14B05D3/02B05D5/08B05D7/00
CPCB05D3/0272B05D5/08B05D7/51B05D7/546B05D2320/00B05D2502/00B05D2503/00B05D2506/25B05D2518/12B05D2601/20C08K2003/2241C08K2003/3045C08L2205/03C09D4/06C09D175/14C09D7/61C09D7/62C09D7/65C09D7/70C08L27/24C08L83/12C08K13/06C08K7/06C08K3/22C08K3/30B05D2420/02B05D2420/01
Inventor 龚锡华吴少华张金龙何伯鑫阎志
Owner 杭州普络飞新材料科技有限公司
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