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Micron-scale strong salt mist resistant and water repellent three-proof paint for circuit boards

A salt spray-resistant, micron-level technology, applied in fire-resistant coatings, coatings, etc., can solve the problems of applying conformal paint to substances without perfluoropolyether chains

Active Publication Date: 2018-10-02
太仓中化环保化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, there is no literature report on the application of substances with perfluoropolyether chains in conformal paints.

Method used

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  • Micron-scale strong salt mist resistant and water repellent three-proof paint for circuit boards
  • Micron-scale strong salt mist resistant and water repellent three-proof paint for circuit boards
  • Micron-scale strong salt mist resistant and water repellent three-proof paint for circuit boards

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] This embodiment provides a kind of anti-corrosion paint, which is prepared through the following steps:

[0056] (1) Preparation of perfluoropolyether modified acrylate polymer:

[0057] In a 500mL four-neck flask equipped with a thermometer, reflux condenser, and nitrogen replacement, add 50.00g 3 CF 2 CF 2 O[CF(CF 3 ) CF 2 O] 8.7 CF(CF 3 )CH 2 CH 2 OC(O)C(CH 3 )=CH 2 , 14.00g butyl acrylate, 34.00g cyclohexyl methacrylate, 1.00g methacrylic acid, 1.00g azobisisobutyronitrile initiator and 233.00g nonafluorobutyl ether solvent. After replacing with nitrogen, the oil bath was heated to 75° C. and reacted for 10 hours. After the reaction was completed, a polymer product with a solid content of 30% was obtained.

[0058] (2) Preparation of conformal paint:

[0059] The polymer product with a solid content of 30% prepared in step (1) is diluted to 2% with nonafluorobutyl methyl ether to obtain a conformal coating.

[0060] The conformal paint prepared in this...

Embodiment 2

[0062] This embodiment provides a kind of anti-corrosion paint, which is prepared through the following steps:

[0063] (1) Preparation of perfluoropolyether modified acrylate polymer:

[0064] In a 500mL four-neck flask equipped with a thermometer, reflux condenser, and nitrogen replacement, add 50.00g 3 CF 2 CF 2 O[CF(CF 3 ) CF 2 O] 9.2 CF(CF 3 )CH 2 CH 2 OC(O)CH=CH 2 , 14.00 g octyl acrylate, 34.00 g benzyl methacrylate, 1.00 g methacrylic acid, 1.00 g azobisisobutyronitrile initiator and 233.00 g nonafluorobutyl ether solvent. After replacing with nitrogen, the oil bath was heated to 75° C. and reacted for 10 hours. After the reaction was completed, a polymer product with a solid content of 30% was obtained.

[0065] (2) Preparation of conformal paint:

[0066] The polymer product with a solid content of 30% prepared in step (1) is diluted to 5% with nonafluorobutyl methyl ether to obtain a conformal coating.

[0067] The conformal paint prepared in this embod...

Embodiment 3

[0069] This embodiment provides a kind of anti-corrosion paint, which is prepared through the following steps:

[0070] (1) Preparation of perfluoropolyether modified acrylate polymer:

[0071] In a 500mL four-neck flask equipped with a thermometer, reflux condenser, and nitrogen replacement, add 60.00g 3 CF 2 CF 2 O[CF(CF 3 ) CF 2 O] 21.1 CF(CF 3 )CON(H)CH 2 CH 2 OC(O)C(CH 3 )=CH 2 , 4.00 g lauryl acrylate, 34.00 g isobornyl methacrylate, 1.00 g acrylic acid, 1.00 g azobisisobutyronitrile initiator and 233.00 g nonafluorobutyl ether solvent. After replacing with nitrogen, the oil bath was heated to 75° C. and reacted for 10 hours. After the reaction was completed, a product with a solid content of 30% was obtained.

[0072] (2) Preparation of conformal paint:

[0073] The polymer product with a solid content of 30% prepared in step (1) is diluted to 10% with nonafluorobutyl methyl ether to obtain a conformal coating.

[0074] The conformal paint prepared in this...

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Abstract

The invention relates to a micron-scale strong salt mist resistant and water repellent three-proof paint for circuit boards, wherein the paint comprises a perfluoropolyether modified acrylate polymer.The perfluoropolyether modified acrylate polymer comprises the following structural units: (A) a structural unit provided by a perfluoropolyether derivative monomer and represented by the general formula I, (B) a structural unit provided by a fluorine atom-free acrylate derivative monomer, (C) a structural unit with a cyclic structure and (D) a structural unit with a polar group, wherein CF3CF2CF2O[CF(CF3)CF2O]nCF(CF3)-Y-C(R1)=CH2 (I), in the formula I, n is 5-50, R1 is hydrogen or 1-4 carbon saturated alkanes, and Y is a connecting group. According to the perfluoropolyether modified acrylatepolymer used for preparing the three-proof paint, a side chain as a perfluoropolyether-based chain is introduced to a polymer chain, a polar group, a cyclic group and other groups are introduced intothe polymer, and the prepared three-proof paint has strong salt mist resistance, high temperature resistance, moisture and heat resistance and excellent water repellency.

Description

technical field [0001] The invention relates to the technical field of protection of printed circuit boards, in particular to a micron-level strong salt-spray-resistant and water-repellent circuit board conformal paint and a preparation method thereof. Background technique [0002] Conformal paint is a specially formulated coating used to protect circuit boards and related equipment from environmental erosion. The three anti-paints are coated on the surface of the circuit board to form a transparent protective film. The protective film can protect the circuit board from damage in the environment of humidity, salt spray, chemical corrosion, high dust, vibration, etc., and improve the reliability of the circuit board. Reliability increases the safety factor of the entire electronic component. Thereby improving and prolonging their service life, ensuring the safety and reliability of use. In order to improve the water repellency of the three anti-paints, people often introduc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C08F283/06C08F220/18C08F220/06C08F220/20C08F230/02
CPCC09D151/08C08F283/065C09D5/18C08F220/1808C08F220/1807C08F220/06C08F220/1804C08F220/1806C08F220/1818C08F220/20C08F220/1811C08F230/02C08F220/1812
Inventor 姜维梁成锋盛磊张航文梁浩宇艾显虎
Owner 太仓中化环保化工有限公司
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