Low-viscosity environment-friendly electronic tri-proof paint and preparation method and application thereof

Abstract

The invention provides a preparation method for low-viscosity environment-friendly electronic tri-proof paint. The low-viscosity perfluocarbon polymer electronic tri-proof paint is synthesized by using perfluoroalkyl acrylate as a base material, and using modified graphene as an additive. The perfluoroalkyl acrylate is synthesized through free radical polymerization of four mixtures of methyl acrylate, butyl acrylate, tert-Butyl acrylate and hydroxyethyl acrylate and a high-performance fluorine-containing monomer. The modified graphene is graphene prepared by lipophilic modification, and can be blended with the perfluoroalkyl acrylate. Firstly, the low-viscosity environment-friendly electronic tri-proof paint is lower in viscosity, and good in heat radiation, and is capable of coating andforming about 5-10 um of a thin film on a circuit board; secondly, a solvent and a polymer in a product are safe and low-toxic substances without damaging an ozone layer; and thirdly, because of the combined action of the graphene and the fluorine-containing monomer, the paint film can bear the impact of about 80 KG of an external force and does not fall off.

Description

technical field [0001] The invention relates to a paint, in particular to a low-viscosity environment-friendly conformal paint for the electronic industry and a preparation method thereof. Background technique [0002] With the rapid development of the electronics industry, the industry has higher and higher requirements for circuit board miniaturization and working stability in harsh environments. Usually, the performance of the circuit board will decline when it is affected by the adverse factors of the operating environment. The three anti-paint is a special formula coating, which can be coated on the surface of the circuit board to form a polymer film, which can protect the circuit board and its related products. The equipment is protected from the erosion of the environment. Among them, moisture is the most destructive problem for circuit boards, which can greatly reduce the insulation resistance between conductors, especially when it acts together with pollutants, it ...

AI Technical Summary

Problems solved by technology

[0003] However, the three anti-paint products currently on the market generally have problems such as relatively thick thickness, poor heat dissipation, high viscosity, and are not resistant to falling, shockproof, and prone to peeling off when subjected to external impacts.