Motherboard coated with conformal coating

A technology for conformal paint and motherboard, applied in coatings, polyurea/polyurethane coatings, instruments, etc., can solve the problems of water resistance, oil resistance and poor self-cleaning performance of the coating film, and achieve good self-cleaning and anti-fouling. Effect, good oil resistance effect

Active Publication Date: 2014-02-19
SHENZHEN WEIBU INFORMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the surface energy of the film formed by the current three-proof paint during coating is relatively high, resulting in poor water resistance, oil resistance and self-cleaning performance of the coating film.

Method used

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  • Motherboard coated with conformal coating
  • Motherboard coated with conformal coating
  • Motherboard coated with conformal coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The conformal paint in this embodiment includes the following components calculated by mass percentage:

[0037]

[0038]

[0039] Above-mentioned polyurethane acrylate resin can adopt following method to prepare:

[0040] Add 700g of polyester polyol XH-6480 (such as produced by Nanyang Xianhe New Material Co., Ltd.) into the reaction bottle, after heating at 100°C and vacuuming for 1 hour, add diisocyanate TDI, dissolve and mix evenly, and react for 3 hours. The molar ratio scope of the hydroxyl group in the ester polyol and the isocyanate group in the diisocyanate is 0.5: 1; Then in the product, add 5wt% hydroxyethyl methacrylate (HEMA ), cooled to 75°C for 1 hour, added 5wt% initiator azobisisobutyronitrile relative to the mass of hydroxyethyl methacrylate, reacted for 6 hours at 75°C, cooled, cooled to 50°C and then added relative React with hydroxyethyl methacrylate (HEMA) with a molar weight of 5% diisocyanate for 0.5 hours and then cool to obtain a polyur...

Embodiment 2

[0045] This embodiment provides a kind of anti-corrosion paint for mainboard protection, which includes the following components calculated by mass percentage:

[0046]

[0047] Above-mentioned polyurethane acrylate resin can adopt following method to prepare:

[0048] Add 500g of polyester polyol XH-8350 (such as produced by Nanyang Xianhe New Material Co., Ltd.) into the reaction bottle. After heating at 120°C and vacuuming for 1 hour, add diisocyanate MDI, dissolve and mix evenly, and react for 5 hours. The molar ratio range of the hydroxyl group in the ester polyol to the isocyanate group in the diisocyanate is 0.8:1; then add 10wt% hydroxyethyl methacrylate (HEMA ), lower the temperature to 85°C for 2 hours, add 5wt% initiator azobisisobutyronitrile relative to the mass of hydroxyethyl methacrylate, react at 85°C for 10 hours, cool down, and then add relative React with hydroxyethyl methacrylate (HEMA) with a molar weight of 5% diisocyanate for 2 hours and then cool t...

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Abstract

The invention discloses a motherboard coated with a conformal coating. The motherboard is coated and solidified with a conformal coating layer, which comprises the following components by weight: 12-30% of organosilicon modified acrylate resin, 10-30% of polyurethane acrylate resin, 20-40% of a fluorine-containing reactive diluent, 10-20% of a reactive diluent without fluorine, 4-7% of a photoinitiator and 0.1-5.5% of an auxiliary agent. The conformal coating layer provided by the invention improves water resistance, oil resistance and self-cleaning property of the motherboard, and can achieve good antifouling and waterproof effect. The conformal coating has high hardness, scratch resistant performance, high glossiness and good adhesion; and the conformal coating is a solvent-free coating, which has no solvent evaporation during the curing process and meets the environment-friendly requirements in the current market.

Description

technical field [0001] The invention relates to the field of motherboards, in particular to a motherboard coated with conformal paint. Background technique [0002] In order to have waterproof, moisture-proof, and dust-proof "three-proof" performances, the motherboard usually needs to be coated with three-proof paint. Therefore, the three-proof paint is also called motherboard protection oil, three-proof paint, three-proof glue, etc. The main board coated with three-proof paint has waterproof, moisture-proof, dust-proof "three-proof" performance and resistance to cold and heat shock, aging resistance, Radiation resistance, salt spray resistance, ozone corrosion resistance, vibration resistance, good flexibility, strong adhesion and other properties, so as to improve and prolong their service life and ensure the safety and reliability of use. Under realistic conditions, such as chemical environment (fuel, coolant, etc.), vibration, high dust, salt spray, humidity and high te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D175/14C09D7/12G06F1/16
Inventor 张开运
Owner SHENZHEN WEIBU INFORMATION
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