Can medical catheters only be made of plastic?
Nylon PA6 and PA66. are superior to thermosetting composites, BMC molding plastics, phenolic molding compounds, and thermoplastic plastics, engineered plastics, nylon, PA6, and PA66 can be recycled. In contrast, thermosetting composite BMC molding plastics, phenolic molding compounds, although long service life, but difficult to recover, the impact on the environment. BMC mould plastic is the ideal raw material for the base and shell of high current contactor. It is gradually replacing other kinds of plastics on AC contactor.
Thermosetting composite BMC plastic is also used in AC contactor. The main applications are pedestal and shell frame, because the mechanical strength of BMC material is greater than that of general thermoplastic engineering plastics. It can be used in humid, cold and corrosive environment for a long time. The utility model can be made into BMC mould plastic with various performances according to the different performance requirements of the product and the advantages of the composite material. BMC material has the advantages of good electrical insulation, flame retardancy, arc resistance, leakage resistance and chemical resistance. Compared with the phenolic bakelite mold plastic, BMC products can be manufactured according to the needs of a variety of bright colors. BMC heat resistance is better than general engineering plastics. The long-term heat-resistant temperature is 150 degrees centigrade. BMC has low water absorption. After 24 hours of soaking, the insulation is still very good. It can ensure the safety of the use in hot and humid conditions. The shrinkage of BMC products is zero, the size of the parts is stable, and the BMC products are easy to be molded, designed and easy to scale production.
The chemical and physical properties of thermoplastic PA6 are similar to those of PA66. It has a lower melting point and a wide range of process temperatures. Melting temperature: 230~280C, for enhanced varieties of 250~280C. PA66 has a high melting point in polyamide materials. Melting temperature: 260~290C. The product of glass additive is 275~280C. The melting temperature shall be higher than 300C. And they add flame retardants, the melting temperature is increased, and the flame retardant effect is better. Often used for high breaking force automatic control electrical appliance shell and parts, such as AC contactor shell.
The main materials used in AC contactor shell are halogen free flame retardant nylon PA6, PA66 and thermosetting composites, BMC molding compound, phenolic molding compound, etc..
