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Organosilicone acrylic acid polymerized hybrid conformal coating and preparation method thereof

A technology of acrylic polymerization and three-proof paint, which is applied in anti-corrosion coatings, fire-proof coatings, coatings, etc. It can solve the problems of general weather resistance, difficult repair, high expansion coefficient, etc., and achieve excellent aging resistance and high adhesion. Anti-corrosion effect, the effect of excellent comprehensive performance

Active Publication Date: 2021-12-10
毛志强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Acrylic three anti-paints are not resistant to temperature, solvents, poor chemical resistance, hot sticky, cold and brittle, and have general electrical properties; epoxy resin conformal paints have poor toughness, almost no elasticity, and general electrical properties; polyurethane conformal paints Raw materials have potential toxicity, slow curing, poor electrical properties, and general weather resistance; parylene-based conformal coatings require special coating equipment, which are difficult to remove and make repairs difficult; conventional silicone-based conformal coatings have excellent Excellent electrical protection performance and weather resistance, but easy to wear, high expansion coefficient, complex technical route, poor alkali resistance and other shortcomings
In addition, most of the three anti-paints currently use toxic solvents containing benzene series (aromatic hydrocarbons)

Method used

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  • Organosilicone acrylic acid polymerized hybrid conformal coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A high performance hybrid silicone acrylic polymer by UV curing and moisture bis three paint, in percentage by mass, comprising a siloxane bond compound 5% 14% of vinyl compounds, acrylate compounds 30%, 40% solvent UV crosslinker 10%, 1.0%-catalyst.

[0042] A siloxane compound is a polysiloxane bond and allyl trimethoxysilane, parts by mass ratio of 1: 1.

[0043] Vinyl compounds include vinyl chloride and vinylidene chloride, parts mass ratio of 1: 1.

[0044] Acrylate compound is methyl methacrylate.

[0045] The solvent comprises n-butyl acetate.

[0046] UV crosslinking agents include pentaerythritol triacrylate and dipentaerythritol hexaacrylate, parts by mass ratio of 1: 1.

[0047] Co-catalyst comprising methylethyl ketone peroxide polymerization co-catalyst, and a phosphoric acid moisture curing aid 184 photoinitiator.

[0048] The silicone acrylic polymer hybrid UV and moisture preparing three anti-dual cure paint, comprises the following steps:

[0049] Parts by...

Embodiment 2

[0052] A high performance hybrid silicone acrylic polymer by UV curing and moisture bis three paint, in percentage by mass, the bond comprising a siloxane compound 10% 15% vinyl compounds, acrylate compounds 25%, 28.5% solvent UV crosslinker 20%, 1.5%-catalyst.

[0053] Compound siloxane bond is an allyl trimethoxysilane and vinyltriethoxysilane, parts mass ratio of 1: 1.

[0054] Vinyl compounds include vinyl chloride and vinyl stearate, parts mass ratio of 1: 1.

[0055] Β- carboxyethyl acrylate compound is ethyl acrylate.

[0056] The solvent comprises a C12 isoparaffin.

[0057] UV crosslinking agents include trimethylol propane triacrylate and trimethylol propane oxidation diethyl triacrylate, parts mass ratio of 1: 1.

[0058] Catalytic oxidation aids include isononanoic acid tert-butyl polymerization-catalyst, p-toluenesulfonic acid and moisture curing aid 369 photoinitiator.

[0059] The silicone acrylic polymer hybrid UV and moisture preparing three anti-dual cure paint, ...

Embodiment 3

[0063] A high performance hybrid silicone acrylic polymer by UV curing and moisture bis three paint, in percentage by mass, the bond comprising a siloxane compound 15% 20% of a vinyl compound, an acrylate compound 20% 25% solvent UV crosslinker 15%, 5% co-catalyst.

[0064] Compound siloxane bond is an allyl triethoxysilane and γ- methacryloxypropyl trimethoxy silane, parts mass ratio of 1: 1.

[0065] Vinylidene chloride and vinyl compounds include vinyl octanoate, parts mass ratio of 1: 1.

[0066] Acrylate compound is isooctyl acrylate.

[0067] The solvent comprises propylene glycol butyl ether.

[0068] UV crosslinking agents include trimethylol propane triacrylate and 1,6-hexanediol diacrylate, parts mass ratio of 1: 1.

[0069] Co-catalyst comprising a peroxy 2-ethylhexyl tert-amyl polymerization-catalyst, dibutyl tin dilaurate and a moisture-curable, and a photoinitiator assistant 369.

[0070] The silicone acrylic polymer hybrid UV and moisture preparing three anti-dual c...

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PUM

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Abstract

The invention discloses an organosilicone acrylic acid polymerized hybrid conformal coating and a preparation method thereof. The conformal coating is prepared from the following raw materials: a compound containing siloxane bonds, a vinyl compound, an acrylate compound, an ultraviolet cross-linking agent and a catalytic promoter. The organosilicon acrylic acid polymerized hybrid conformal coating prepared by the invention has the advantages of adjustable viscosity, high surface drying speed, good adhesiveness, no yellowing, excellent mechanical property, good solvent resistance, favorable acid and alkali resistance, excellent high and low temperature resistance, excellent weather resistance, good water resistance, favorable electrical insulation property, no aromatic hydrocarbon solvent and the like; and the coating is applicable to the fields of aerospace, 5G communication, electronic information, household appliances and the like.

Description

Technical field [0001] The present invention relates to a printed wiring board protection technology, and in particular relates to a high performance hybrid silicone acrylic polymer by UV - bis moisture curable conformal coating. Background technique [0002] Three anti-paint or anti-coating (Conformal Coating) is a printed circuit board (PCB) formed in the rear surface thereof is coated to a thickness of the transparent protective film specialty polymer between 25 to 250 microns, with a waterproof , moisture, dust, resistance to thermal shock resistance, aging resistance, radiation resistance, salt spray resistance, vibration, and good insulation characteristics, and the circuit board is typically used to protect components from external moisture, dust, chemicals, high and low temperatures and other factors, play to improve the stability of PCB, prolong equipment life and an improved reliability, it is widely used in household appliances and personal smart devices, medical equip...

Claims

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Application Information

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IPC IPC(8): C09D4/02C09D4/06C09D5/25C09D5/08C08F283/12C08F220/14C08F214/06C08F214/08C08F230/08C08F220/28C08F218/10C08F220/18C08F214/26C08F218/08C08F218/00C08F220/40
CPCC09D4/06C09D5/00C09D5/08C09D5/18C08F283/12C08F220/283C08F220/1808C08F220/1818C08F230/085C08F220/1811C08F220/14C08F214/06C08F214/08C08F218/10C08F214/265C08F218/08C08F218/24C08F220/1812C08F220/40
Inventor 毛志强
Owner 毛志强
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