Classification of manufacturing materials for molded case circuit breaker

Update date:2018-04-03 Source:MAXGE

Generally can be divided into thermoplastics and thermosetting plastics, they each have their own advantages.


Thermoplastic molecular structure is a linear structure, which can be softened or melted in the heat, which can be molded into a certain shape, and then hardened after cooling. The process can be repeated several times, when it is heated to a certain degree and then softened and hardened again. Can be continuous production, so it is the main raw material for the production of plastic housing circuit breaker. And the molecular structure of the thermosetting plastic is shape structure, when heat softening occurs, can with molding into a certain shape, but after heated to a certain degree or to join a small amount of curing agent, hardening largely, reheat does not become soft change shape.


After the thermosetting plastic is processed, the heat is no longer softened, so it cannot be recycled, such as phenolic plastics, amino plastics, BMC moulds,SMC moulds, etc. Thermosetting plastic molding process is complicated, so has the certain difficulty, continuous production line and the molded case circuit breaker shell of incomplete and waste plastic can be repeated, but thermosetting plastic molding plastic shell breaker shell only intermittent production can not be reused. The scrap rate of the product is higher than that of thermoplastic circuit breaker shell.


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