CHANG CHUN PLASTICS CO., LTD.
NO. 301, SONGKIANG ROAD, 7
TH FL.,TAIPEI, 10477 TAIWAN TEL : 886-2-2503-8131 (REF) FAX : 886-2- 2501-8018
Engineering Plastics Polybutylene Terephthalate
Technical Data
*** PBT 4830-NCF
PBT glass fiber 30% reinforced injection moulding grade.
Characteristics
1)excellent electrical property
2)excellent temperature resistance, high heat distortion temperature.
3)excellent mechanic and chemical property
4)excellent weatherability
5)excellent wear property
6)excellent moldability
7)High resistance to fuels, oil, fats and many solvents
Injection Moulding Condition
Cylinder temperatures : 240-270℃
Nozzle temperature : 260-270℃
Mould temperature : 40-120℃, suitable temperature 60-80℃
Injection rate : middle - fast
Screw speed : 60-120 rpm, to be chosen in such a way that
plasticizing time is just within cooling time.
2
Pressure Injection pressure : 500-1200 ㎏/㎝
2
Holding pressure : 300-800 ㎏/㎝
Back pressure : 0-3 ㎏/㎝
2
Mould shrinkage Mould shrinkage 1.6 ㎜ thickness horizon is
0.2-0.5% and vertical is 0.8-1.4% under the test
method ASTM D955.
Packaging
25 ㎏/ paper bag .
Material handing
Moisture pick-up from ambient air should be ***oided. Keep hopper properly closed.
PBT 4830-NCF P.1/2
CHANG CHUN PLASTICS CO., LTD.
NO. 301, SONGKIANG ROAD, 7
TH FL.,TAIPEI, 10477 TAIWAN TEL : 886-2-2503-8131 (REF) FAX : 886-2- 2501-8018
Engineering Plastics Polybutylene Terephthalate
*** PBT 4830-NCF
Property Value Unit Test method
ASTM
Glass Fiber Content 30 %
Specific gr***ity 1.63 - D792
Melting point 225 ℃ DSC
-5 ㎝/㎝℃ D696 Coef. of linear thermal expansion 3 10
Heat deflection temperature under load
2
--- 18.6 ㎏/㎝ 200 ℃ D648
2
--- 4.6 ㎏/㎝ 218 ℃ D648
Moisture absorption (24h) 0.03 ％ D570
Flammability acc. to UL94, 3.2 ㎜ thickness V-0 - UL94
Tensile strength 1200 ㎏/㎝
2
D638
Tensile elongation 3.2 ％ D638
Flexural strength 1800 ㎏/㎝
2
D790
Flexural modulus 85000 ㎏/㎝
2
D790
Izod impact strength - notched 1/4” 8.0 ㎏-㎝/㎝ D256
Hardness - rockwell 121 R D785
Dielectric strength, 2 ㎜ thickness 22 KV/㎜ D149
15 Ω-㎝ D257 Volume resistivity 10
13 Ω D257 Surface resistivity 10
Dielectric c***tant 3.5 60Hz D150
Dielectric dissipation factor 0.001 60Hz D150
Arc resistance 100 SEC D495
(1) For reference only
(2) All data in the table are the typical values of the material and not the minimum
values of the material specificati***.
PBT 4830-NCF P.2/2