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Environment-friendly conformal coating composition for fluoride-containing circuit boards as well as preparation method and application of environment-friendly conformal coating composition

A technology of three anti-paints and compositions, which is applied in the direction of anti-corrosion coatings, fire-resistant coatings, paints containing biocides, etc., and can solve the problems of technical effects that need to be improved, difficult to meet requirements, high-standard functional requirements, and performance that has not been effectively improved, etc. problems, to achieve the effect of balanced performance, easy repair, and long service life

Active Publication Date: 2018-08-24
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

Although it has achieved certain effects in terms of salt spray resistance, insulation, and water resistance of the product, its technical effect still needs to be improved, and its performance in other aspects has not been effectively improved, and it is difficult to meet the increasingly high requirements and high standards. and more comprehensive functional requirements

Method used

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  • Environment-friendly conformal coating composition for fluoride-containing circuit boards as well as preparation method and application of environment-friendly conformal coating composition
  • Environment-friendly conformal coating composition for fluoride-containing circuit boards as well as preparation method and application of environment-friendly conformal coating composition
  • Environment-friendly conformal coating composition for fluoride-containing circuit boards as well as preparation method and application of environment-friendly conformal coating composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] In a 250mL four-neck flask equipped with a reflux condenser, a thermometer, and replaced with nitrogen, add 5.00g perfluorobutylethyl methacrylate, 3.00g octadecyl acrylate, and 1.50g isobornyl methacrylate Esters, 0.40g glycidyl methacrylate, 0.10g γ-methacryloxypropyl trimethoxysilane, 0.10g azobisisobutyronitrile initiator and 23.33g dearomatization solvent D40, then replace 10 with nitrogen After that, the oil bath was heated to 65°C and reacted for 16 hours. After the reaction was completed, a product with a solid content of 30% was obtained, which was the environmentally friendly fluorine circuit board conformal paint composition.

[0048] The above-mentioned product with a solid content of 30% is diluted with dearomatization solvent D40 to a solid content of 5%, and the diluted treatment solution can be used to directly treat printed circuit boards.

Embodiment 2

[0050] In a 250mL four-necked flask equipped with a reflux condenser, a thermometer, and replaced with nitrogen, add 6.00g of perfluorobutylethyl methacrylate, 2.00g of cetyl acrylate, and 1.50g of isobornyl methacrylate Esters, 0.40g hydroxyethyl methacrylate, 0.10g γ-methacryloxypropyltrimethoxysilane, 0.10g azobisisobutyronitrile initiator and 23.33g dearomatization solvent D40, and then replace 10 with nitrogen After that, the oil bath was heated to 65°C and reacted for 16 hours. After the reaction was completed, a product with a solid content of 30% was obtained, which was the environmentally friendly fluorine circuit board conformal paint composition.

[0051] The product with a solid content of 30% is diluted with dearomatization solvent D40 to a solid content of 6%, and the diluted treatment solution can be used to directly treat printed circuit boards.

Embodiment 3

[0053] In a 250mL four-necked flask equipped with a reflux condenser, a thermometer, and replaced with nitrogen, add 7.00g perfluorobutylethyl methacrylate, 1.00g behenyl acrylate, 1.50g styrene, 0.40 g hydroxypropyl methacrylate, 0.10 g vinyltrimethoxysilane, 0.10 g azobisisobutyronitrile initiator and 23.33 g dearomatization solvent D40, then replace with nitrogen for 10 minutes, then heat the oil bath to 65 °C, After reacting for 16 hours, a product with a solid content of 30% was obtained after the reaction was completed, that is, the environment-friendly fluorine circuit board conformal paint composition was obtained.

[0054] The product with a solid content of 30% is diluted with dearomatization solvent D40 to a solid content of 7%, and the diluted treatment solution can be used to directly treat printed circuit boards.

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Abstract

The invention discloses environment-friendly conformal coating composition for fluoride-containing circuit boards as well as a preparation method and an application of the environment-friendly conformal coating composition. The conformal coating composition is prepared from 0.1%-30% by mass of a fluorine modified acrylate polymer and 70%-99.9% by mass of a dearomatization solvent, wherein the fluorine modified acrylate polymer is prepared from various specific monomers by copolymerizing in the dearomatization solvent. According to the preparation method, the various specific monomers are subjected to nitrogen replacement in the dearomatization solvent firstly and then stirred for a reaction at 30-120 DEG C in the presence of a polymerization initiator. In terms of the application, the conformal coating can serve as a surface treating agent for treating various printed circuit boards. Compared with fluoroacrylate in the prior art, the conformal coating composition has more remarkable dampproof, waterproof, oilproof, salt spray-proof and anti-creeping effects on the circuit boards, and has the advantages of being environmentally friendly, resistant to hot-cold impact, easy to repairand long in service life as well as excellent and balanced properties.

Description

technical field [0001] The invention belongs to the technical field of conformal paint, in particular relates to the field of printed circuit board protection, in particular to an environment-friendly fluorine circuit board conformal paint composition and its preparation method and application. Background technique [0002] With the rapid development of electronic technology, printed circuit boards are widely used in various fields. Almost all electronic devices contain corresponding printed circuit boards, ranging from mobile phones, USB flash drives, to aerospace, involving civil, commercial, and aerospace applications. Navigation, electronics industry and automobile industry, etc. During the use of the circuit board, it may be in different environments, such as humidity, salt spray, chemical corrosion, high dust, etc., and the circuit board will have mildew, corrosion and other problems, resulting in circuit board failure. Conformal paint is a specially formulated coatin...

Claims

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Application Information

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IPC IPC(8): C09D133/16C09D5/08C09D5/16C08F220/24C08F220/18C08F220/32C08F230/08C08F220/20
CPCC09D143/04C08F220/24C09D5/08C09D5/1662C09D5/18C08F220/1818C08F220/18C08F220/325C08F230/08C08F220/20
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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