At present, the raw materials of standard waterproof junction box in the world mainly include ABS engineering plastics, polycarbonate (PC), PC / ABS, glass fiber reinforced polyester and stainless steel.
According to the different site environment, users can choose the materials that meet the site requirements. ABS engineering plastics:is a general-purpose thermoplastic polymer. Its performance characteristics are good rigidity, high impact strength, heat resistance, low temperature resistance, chemical resistance, excellent mechanical strength and electrical properties, easy processing, good dimensional stability and surface gloss, easy painting and coloring, It can also be used for spraying metal, electroplating, welding and bonding. Because of the characteristics of ABS combined with the characteristics of its three components, ABS has excellent comprehensive properties and becomes one of the preferred plastics for electrical components, household appliances, computers and instruments.
Polycarbonate (PC) materials: Polycarbonate (PC) is a kind of high molecular polymer containing carbonate group in molecular chain. At present, only aromatic polycarbonate has been industrialized. Due to its special structure, polycarbonate has become the fastest growing general engineering plastics among the five engineering plastics.
PC / ABS materials: polycarbonate and acrylonitrile butadiene styrene copolymers and mixtures are thermoplastic plastics made of polycarbonate and polypropylene fine (ABS) alloy. They combine the excellent characteristics of the two materials. The formability of ABS materials and the mechanical properties, impact strength, temperature resistance and UV resistance of PC can be widely used in automobile interior It is mainly used in the equipment, business machines, communication equipment, household appliances and lighting equipment.
Glass fiber reinforced polyester material: GRP: fiberglass reinforcement plastic, also known as FRP, Chinese Name: glass reinforced thermosetting plastic or glass fiber reinforced plastic. It is a kind of composite material, including matrix and reinforcement. The matrix of GRP material is resin, which plays a bonding role. Resin is a thermosetting plastic. GRP is a reinforcing material. GRP has good electrical insulation and bonding properties, high mechanical strength and heat resistance, spinnability, resistance to general acid and alkali and organic solvents, and mildew resistance. The shrinkage rate of molding is small, and the volume shrinkage is 1% ~ 5%. After adding curing agent, it must be heated under pressure, or it can be cured at normal temperature under contact pressure. PC and ABS are both general engineering plastics and thermoplastic plastics.
So the difference between them is the difference between thermosetting plastics and thermoplastic plastics, which should be obvious.
As for the difference between PC and ABS, PC has high transparency but high price. ABS has good solvent resistance and is easy to process.