What are the properties and properties of PBT modified plastics?

 PBT modified plastic is a kind of crystalline aromatic polyester, which belongs to one of Engineering plastics. It has the advantages of chemical corrosion resistance, low moisture absorption, easy processing and molding. However, the mechanical properties of unmodified PBT materials are mostly inferior to other engineering plastics, and there are also some defects, such as low thermal deformation temperature, high temperature dimensional stability, impact strength sensitive to notch and so on. The modification of PBT data mainly includes glass fiber reinforced PBT and flame retardant PBT.

The flame retardancy of PBT data is UL94HB grade, and can be reached UL94V-0 after adding flame retardant. Commonly used flame retardants are bromide, phosphide, chloride and three oxygen, two antimony, etc. At present, the flame retardant PBT is mostly the type of flame retardant with the addition of decabromobiphenyl ether and antimony trioxide.

Glass fiber reinforced PBT material has excellent toughness and fatigue resistance, heat resistance, good weather resistance, good electrical performance, low water absorption. Fujian Huashu new material customer needs its flame retardant modification according to customer demand. After modification, the heat resistance, modulus, dimensional stability and flame retardancy can be significantly improved. The enhanced flame retardant PBT data are widely used in automotive, electronic and electrical industries.

The main characteristics of PBT modified plastics are:
1. The tensile strength and tensile modulus of nylon are similar to those of nylon.
2, the friction coefficient is small and has self moistening property.
3. Low water absorption and excellent electrical properties.
5. Good dimensional stability.
6. Excellent chemical resistance and oil resistance.

Main applications of PBT plastics
1, electronic and electrical appliances
Non-fused-wire breakers, electromagnetic switches, galloping transformers, household appliances handles, connectors, etc. PBT usually adds 30% glass fiber blending as the connector, PBT is widely used because of its mechanical properties, solvent resistance, good formability and low cost.
2. Cooling fan
Glass fiber reinforced PBT is mainly used in heat dissipation fans. Heat dissipation fans are rotated in the machine for a long time to help dissipate heat. The plastic properties require heat resistance, flame retardancy, insulation and mechanical strength. PBT is usually used as the outer frame of heat dissipation fans and fan blade coil shaft in a 30% fiber-reinforced manner.

            Lighting industry modified PBT typical products
3. Electrical components
Glass fiber reinforced PBT is also used as a coil shaft in transformers and relays. It is usually formed by adding 30% PBT fiber. The physical properties of coil shaft request include insulation, heat resistance, resistance to welding neodymium, activity, strength and so on. Applicable data include glass fiber reinforced PBT, glass fiber reinforced PA6, glass fiber reinforced PA66, etc.
4, automotive category
A. External parts: mainly automobile bumper (PC/PBT), door handle, corner grille, initiator heat release hole cover, window motor housing, fender, wire casing, wheel cover automobile transmission gear box, etc.
B, internal components: endoscopic brackets, wiper support and control system valves;
C, automotive electrical parts: automobile front coil coils and various electrical connectors.
At the same time, it can also be applied to the charging gun shell of new energy vehicles.
5, machinery and equipment
PBT plastics are also widely used in tape recorders such as belt shafts, computer hoods, iron hoods, baking machine parts, as well as a large number of gears, cams, buttons, electronic watch shells, camera parts (with heat-resistant, flame-retardant requirements)