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High-wear-resistance damp-proof coating composition as well as preparation method and application thereof

A technology with high wear resistance and composition, applied in anti-corrosion coatings, coatings, polyurea/polyurethane coatings, etc., can solve the problems of inability to spray electronic components, moisture-proof agent waterproof and moisture-proof restrictions, etc., to achieve safety and environmental protection in the preparation and use process , low surface tension, good fluidity

Active Publication Date: 2020-06-02
北京信为兢创科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the preparation process of the above-mentioned fluorine-containing moisture-proof agents, water is used as a solvent additive, which cannot be directly used for spraying electronic components, so that the application of the prepared moisture-proof agents in the waterproof and moisture-proof aspects of electronic products is limited.

Method used

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  • High-wear-resistance damp-proof coating composition as well as preparation method and application thereof
  • High-wear-resistance damp-proof coating composition as well as preparation method and application thereof
  • High-wear-resistance damp-proof coating composition as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Add 100g TEMAc-6 (0.23mol), 0.3g HEMA (0.0023mol), 0.5g AIBN, 100g 7300 into a 500ml three-necked flask, N 2 After the replacement, react at 80°C for 6 hours to obtain a fluorine-containing polymer stock solution. The weight-average molecular weight of the fluorine-containing polymer was 31,000.

[0045] Add 0.22g of curing agent TDI and 9930g of 7200 to the fluoropolymer stock solution, and stir evenly in a mixing tank to obtain a coating composition.

[0046] The coating composition was dripped onto the substrate by means of drop coating, and after curing at room temperature for 72 hours, a coating was obtained. The coating properties are listed in Table 1. The coating formed by the coating composition has good hydrophobicity, hardness and wear resistance. The carbon steel corrosion test shows that the moisture-proof and water-proof effect of the coating composition coating on the carbon steel sheet has a good retarding effect on the corrosion of the carbon steel s...

Embodiment 2

[0051] Add 100g TEMAc-6 (0.23mol), 15g HEMA (0.12mol), 10g AIBN, 1000g 7200 into a 1000ml three-necked flask, N 2 After replacement, react at 70°C for 24 hours to obtain a fluoropolymer stock solution. The weight average molecular weight of the fluorine-containing polymer is 5,000.

[0052] Add 25.7g of curing agent IPDI and 150g of 7200 to the fluorine-containing polymer stock solution, and stir evenly in a mixing tank to obtain a coating composition.

[0053] The coating composition is sprayed onto the substrate by spraying, and after drying, it is cured at 200° C. for 0.01 h to obtain a coating. The coating properties are listed in Table 1. The FT-IR spectrum of the coating is as follows figure 2 As shown, it can be seen that the coating is a fluorine-containing copolymer.

Embodiment 3

[0055] Add 100g TEMAc-6 (0.24mol), 6.9g HPMA (0.05mol), 2g BPO, 200g 7100 into a 500ml three-necked flask, N 2 After replacement, react at 60°C for 24 hours to obtain a fluoropolymer stock solution. The weight-average molecular weight of the fluorine-containing polymer is 55,000.

[0056] Add 10.6g of curing agent IPDI, 2186g of 7100 and 243g of HFE-449 to the stock solution of fluoropolymer, and stir evenly in a mixing tank to obtain a coating composition.

[0057] The coating composition is sprayed onto the substrate by spraying, and after drying, it is cured at 120° C. for 2 hours to obtain a coating. The coating properties are listed in Table 1. The FT-IR spectrum of the coating is as follows image 3 As shown, it can be seen that the coating is a fluorine-containing copolymer.

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Abstract

The invention relates to a high-wear-resistance moisture-proof coating composition as well as a preparation method and application thereof, in particular to a high-wear-resistance fluorine-containingpolymer composite coating composition which is used for high-wear-resistance water resistance, moisture resistance and corrosion resistance for electronic devices and between connecting pieces thereof. The high-wear-resistance damp-proof coating composition is characterized in that the composition comprises the following components in parts by weight: 1-9 parts of a fluorine-containing polymer, 0.02-2 parts of a curing agent, and 89-99 parts of a fluorine-based solvent. The fluorine-containing polymer is prepared from the following raw materials: a fluorine-containing monomer, a hydroxyl estermonomer, an initiator and a fluorine-based solvent, wherein the weight ratio of the fluorine-containing monomer to the hydroxyl ester monomer to the initiator to the fluorine-based solvent is 100:(3-15):(0.5-10):(100-1000). The coating composition can be directly coated on an electronic component, a coating with good wear resistance can be formed after the coating composition is cured, and the composite coating has a good damp-proof protection effect on a substrate; and the coating composition adopts the safe, non-toxic and non-flammable fluorine-based solvent, so that the preparation and useprocesses are safe and environmentally friendly, and the coating composition can be directly opened for use without additional protection.

Description

technical field [0001] The present invention relates to a high wear resistance moisture-proof coating composition and its preparation method and application, specifically a high wear resistance fluorine-containing polymer composite coating composition used between electronic devices and their connectors High wear resistance waterproof, moisture-proof, corrosion-resistant purposes. Background technique [0002] With the continuous development of electronic technology, the use of portable electronic products is becoming more and more popular, and its use places and environments are becoming more and more complex and harsh. This puts forward higher requirements for the waterproof, moisture-proof and corrosion resistance of portable electronic products. Using a fluorine-based solvent solution of a fluorine-containing alkyl acrylate polymer as a coating agent can form a waterproof and moisture-proof coating with a thickness of less than 1 μm on electronic devices, and thus has at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/08C09D5/00C09D7/20C08G18/62
CPCC09D175/04C09D5/08C09D5/00C09D7/20C08G18/6279
Inventor 米欣肖强陈琦李猛
Owner 北京信为兢创科技有限公司
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