Strong Characteristics Against Brittleness Virgin PBT Plastic

Dongguan Forever Co.,Ltd is the manufacture of the China origin cheap UV stablized PC polycarbonate Granules Polymer Resin


Unreinforced grades have abundant strength and flexibility, and have strong characteristics against brittleness. 

UL-certified slow-burning(94HB) and self-extinguishing grades(94V-0,V-2) exist, and electrical properties exhibited

 are the highest of any thermoplastic. Low water absorption is exhibited, and excellent electrical properties(CTI and GWIT) 

are retained over extended periods of usages, even with widely varied temperature and humidity conditions. 


The surface of molded products is smooth, and a low coefficient of friction is exhibited.As the amount of froction is low, 

PBT is suitable for use in application requiring friction and wear properties. 


The material is exceptionally reliable, with small in-use dimensional variation, and superior molding stability and dimensional precision.


General

Form

  Resin Pellets




Feature


Low Friction


Good Dimensional


Good Surface Appearanc

Chemical Resistant High Elasticity




Good Thermal

  Environmentally Sound 


  Excellent Processability 


 Low Moisture

Usage                                       Automotive

  Housing

  Electrical

Physical

Nominal Value

Test Method

Density / Specific Gravity

1.62 g/cm³

ASTM D792

Molding Shrinkage, Flow

0.40 - 0.60 %

ASTM D955

Water Absorption(24 hr;23 °C)

0.050 %

ASTM D570

Mechanical

Nominal Value

Test Method

Tensile Strength, Yield

120 MPa

ASTM D638

Flexural Modulus

10000 MPa

ASTM D790

Flexural Strength

200 MPa

ASTM D790

Notched Izod Impact Strength

12 kJ/m²

ASTM D256

Unnotched Izod Impact Strength

70 kJ/m²

ASTM D256



Thermal

Nominal Value

Test Method

Deflection Temperature Under Load, Unannealed

0.45 MPa

1.8 MPa


220 °C

208 °C

ASTM D648

Flame Rating

0.8 mm

1.6 mm


V-0

V-0

UL 94

Electrical

Nominal Value

Test Method

Volume Resistivity(2 mm)

1.3E+16 ohms ·cm

ASTM D257

Dielectric Strength(2 mm)

20 kV/mm

ASTM D149

Dielectric Constant(50 Hz)

3.20

ASTM D150

Dissipation Factor(50 Hz)

0.020

ASTM D150

Processing


Nominal Value

Rear Temperature<Injection>


225 - 250 °C

Middle Temperature<injection>


225 - 250 °C

Front Temperature<Injection>


225 - 250 °C

Nozzle Temperature<Injection>


240 °C

Mold Temperature<Injection>


60 - 80 °C

Injection Pressure<Injection>


80.0 - 120 MPa

Back Pressure<Injection>


8.00 - 18.0 MPa

Screw Speed <Injection>


< 100 rpm

Injection Time<Injection>


3 - 15 sec

Time Pressure<Injection>


2 - 5 sec

Total Cycle<Injection>


15 - 50 sec



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