Gallium-oxide-containing insulating tri-proof paint for printed circuit board

Abstract

The invention relates to the technical field of protection of printed circuit boards, in particular to gallium-oxide-containing insulating tri-proof paint for a printed circuit board. According to a formula of the tri-proof paint, polystyrene is utilized to modify unsaturated polyester resin, so that shrinking percentage of a film formed by the unsaturated polyester resin is reduced; and surface-modified gallium oxide powder is added, so that electrical performances of coating are effectively improved, and faults such as a short circuit among circuits and the like are prevented from occurring; in process, resin is subjected to ultrasonic treatment in a solvent, so that the resin is more liable to be compatible and to react with other materials, and the follow-up curing rate is increased; the coating prepared from the gallium-oxide-containing insulating tri-proof paint can realize curing at the room temperature, and is good in air-drying property; and a paint film is flat and full, free of pin holes, excellent in electrical performances, low in dielectric constant, and good in antistatic property, not only brings the conventional tri-proof effect into play, but also can effectively relieve occurrences of faults such as short circuit in the circuit board, so that the circuit board is guaranteed to normally work for a long time.

Description

technical field [0001] The invention relates to the technical field of printed circuit board protection, in particular to an insulating conformal paint for printed circuit boards containing gallium oxide 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 m...

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