LED灯头专用料/瓷白色PBT/台湾长春4815 (CAS No.24968-12-5)

Product Name:LED Lamp Holder Grade (Milky White PBT)

English Name:Polybutylene Terephthalate (PBT)

CAS No.:24968-12-5

Aliases:Poly(butylene terephthalate), PBT, Chang Chun 4815, Milky white PBT

Molecular Formula:(C12H12O4)n

Physical Properties:PBT is a semi-crystalline engineering thermoplastic with excellent chemical stability, mechanical strength, electrical insulation and thermal stability, and remains stable under a wide range of environmental conditions. It has very low moisture absorption. The melting point is approximately 225°C, Vicat softening temperature about 170°C, and glass transition temperature 22–43°C. Tensile strength is about 50 MPa for unreinforced grades and 170 MPa for glass-reinforced grades. Typical mold shrinkage is 1.5%–2.8%, while 30% glass-filled grades shrink 0.3%–1.6%. Density is approximately 1.31 g/cm³ for unreinforced grades.

Uses:It is widely used in household appliances, electrical components and automotive parts. Typical applications include food processing blades, vacuum cleaner parts, electric fans, hair dryer housings, coffee utensils, switches, motor housings, fuse boxes, computer keyboard keys, radiator grilles, body panels, wheel covers and door components. This milky white grade is specifically designed for LED lamp holders and similar lighting components.

Technical Specifications:

Density: approximately 1.31 g/cm³ (unreinforced grade)

Melting point: approximately 225°C

Tensile strength: about 50 MPa for unreinforced grades, up to 170 MPa for glass-reinforced grades

Mold shrinkage: 1.5%–2.8%; 0.3%–1.6% for 30% glass-filled grades

Very low moisture absorption with equilibrium water absorption less than 0.1%