Method for manufacturing halogen-free flame-retardant glass fabric laminates

Abstract

The invention provides a method for manufacturing halogen-free flame-retardant glass fabric laminates to overcome the defects that the electric property of electronic products in the using process is reduced and the like because the vitrification of copper-clad laminates has low mechanical strength and poor thermal stability at high temperature due to adding great amount of flame retardant and flame-retardant auxiliary materials in the conventional production of flame-retardant glass fabric laminates. The manufacturing method comprises the following steps of: uniformly mixing benzoxazine resin, phenolic resin and diphenylene ether resin; coating the mixture onto alkali-free glass cloth to prepare gray cloth; performing hot pressing to prepare a flame-retardant glass fabric laminate; and deburring and polishing to obtain a finished product.

Description

technical field [0001] The invention discloses a method for manufacturing a halogen-free flame-retardant glass fiber cloth laminate, belonging to the technical field of production of electronic and electrical insulating materials. Background technique [0002] Halogen-free flame-retardant glass fiber cloth laminate has good flame-retardant, high heat resistance, insulation and mechanical properties, and is mainly used as insulating structural parts in motors and electrical equipment, and can be used in humid environments and transformer oil. The manufacturing method of known flame-retardant glass fiber cloth laminated board is: [0003] Phenolic epoxy adhesive → add bromine or phosphorus-containing flame retardants (such as brominated epoxy, boron tribromide, polyphosphate amine, melamine cyanurate, phosphate) → add flame retardant auxiliary materials (aluminum hydroxide, Magnesium hydroxide) → Stir evenly → Apply to the alkali-free glass cloth of the copper-clad sheet and ...

AI Technical Summary

Problems solved by technology

[0005] In view of the existence of flame-retardant glass fiber cloth laminates, a large amount of flame retardants and flame-retardant auxiliary materials are added in the production, resulting in the vitrification of copper-clad sheets with weakened mechanical strength and poor thermal stability in high-temperature environments, resulting in electronic products. Defects such as the decline of electrical performance during use, the invention provides a method for manufacturing a halogen-free flame-retardant glass fiber cloth laminate, the invention does not add auxiliary materials, uses fewer types of raw materials, and has a simple manufacturing method; Halogen flame retardant glass fiber cloth laminate does not change in mechanical strength under high temperature environment, and its thermal performance is stable