Waterproof and corrosion-resistant printed-circuit-board tri-prevention lacquer and preparing method thereof

Abstract

The invention discloses a waterproof and corrosion-resistant printed-circuit-board tri-prevention lacquer. The waterproof and corrosion-resistant printed-circuit-board tri-prevention lacquer is prepared from, by weight, 30-40 parts of polyether acrylate, 10-15 parts of methyl acrylate, 5-7 parts of ethylene glycol dimethacrylate, 1-2 parts of barium stearate, 8-10 parts of forsterite powder, 3-5 parts of bamboo powder, 3-5 parts of metakaolin, 5-7 parts of aluminum dihydrogen phosphate, 5-7 parts of modified attapulgite, 5-6 parts of white carbon black, 3-4 parts of epoxidized soybean oil, 5-6 parts of pentaerythritol, 10-15 parts of butyl rubber latex, 2-4 parts of isopropanolamine, 3-5 parts of dodecyl polyglucoside, 0.3-0.5 part of bergamot oil, 4-6 parts of benzyl alcohol and 10-12 parts of tackifying resin. The tri-prevention lacquer is high in bonding strength, excellent in water resistance and corrosion resistance and good in low temperature resistance.

Description

technical field [0001] The invention relates to the technical field of printed circuit board protection, in particular to a waterproof and corrosion-resistant conformal paint for printed circuit boards and a preparation method thereof. Background technique [0002] Printed circuit board refers to the formation of point-to-point interconnection lines and printed components on an insulating substrate according to a predetermined design, and is a provider of electrical connections for electronic components. Circuit boards are very common in daily life, ranging from small mobile phones, USB flash drives, and cameras to high-end products such as aerospace and high-speed trains. With the increasing variety and quantity of electronic products, it is particularly important to strictly control the quality of circuit boards to improve the competitiveness of electronic products. In the actual application process, the use environment of the circuit board is complex and diverse, and may...

AI Technical Summary

Problems solved by technology

In the actual application process, the use environment of the circuit board is complex and diverse, and may face humidity, high heat, salt spray, low temperature, vibration, high dust and other environments. If no corresponding effective protection is carried out, the circuit board will quickly appear corrosion, deformation, Mildew, aging and other problems will eventually lead to circuit failure and equipment failure

[0003] In order to reduce the damage to the circuit board by the external environment and ensure the normal operation of the equipment, protective paint is often sprayed on the surface of the circuit board, also known as three anti-paint, and its main chemical components are acrylate, silicone, polyurethane, epoxy resin, etc. , the working principle is to form a protective film on the surface of the circuit board to protect the circuit board from the damage of the working environment, thereby improving the quality and reliability of the circuit board. Resist environmental pollutants, especially the corrosion of chemical pollutants, not easy to repair, toxic and harmful, etc., so it is necessary to improve the three anti-paint formula, further strengthen the comprehensive performance of the circuit board, improve the protection effect, in order to meet the rapid development of integrated circuit technology need