Product Series
PBT
Overview
PBT is a polyester series, a crystalline thermoplastic engineering plastic made by polymerizing dimethyl terephthalate (DMT) and 1,4-butanediol (1,4-Butanediol). Appearance of solid white particles
The glass transition temperature is close to 40℃ (lower than PET, faster curing speed), melting point is 228℃, long-term use temperature RTI reaches 140℃, relative density of pure resin is 1.31, ignition point>300℃
Characteristic
Advantage
◆ High strength, high rigidity, high toughness
◆ Good liquidity
◆ Good surface finish
◆ Small friction coefficient and self-lubricating
◆ Creep resistance
◆ Low water absorption
◆ Easy injection
◆ Excellent electrical properties
◆ Good size stability
◆ Excellent oil and chemical resistance, high stress cracking
Disadvantage
◆ Low impact strength
◆ Intolerant to strong acid
◆ Easy to hydrolyze in hot water
Variety
● Glass fiber reinforced
● Carbon fiber reinforced
● Alloy
● Flame retardant
● Low warpage
● Hydrolysis resistance
● High gloss
● High toughness
● Wear-resistant
Typical physical data
| Properties |
|---|
| Specific Gravity |
| Flexural modulus |
| Charpy notched impact strength |
| Heat Deflection temperature (0.45MPa) |
| Heat Deflection temperature (1.8MPa) |
| Mold shrinkage (MD/TD)3mmt |
| Flammability |
| Unit (ISO) | General purpose | Non-reinforced flame retardant grade | 30% Glass fiber |
|---|---|---|---|
| - | 1.31 | 1.43 | 1.54 |
| MPa | 2500 | 2900 | 9600 |
| KJ/m2 | 4.5 | 2.5 | 10 |
| ℃ | 150 | 136 | 213 |
| ℃ | 60 | 64 | 200 |
| % | 1.7/2.3 | 1.5/2 | 0.3/1 |
| HB | V/0 | HB |
Application
○ Electronic and electrical
Non-fuse breaker, electromagnetic switch, flyback transformer, household appliance handle, connector , Socket, fuse box
○ Car
Door handles, bumpers, switchboard covers, fenders, wire protective shells, rim covers, car light frames
○ Industrial parts
OA fan, keyboard, fishing tackle reel, parts, lampshade, lamp holder, cooling fan, housing of small household appliances, transformer, electric iron base
Partner
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