GROMAX Plastic Materials <PBT1100-211XT>

PBT Series unreinforced middle viscosity injection moulding grade.

Characteristics:
  • Excellent electrical property
  • Excellent temperature resistance, high heat distortion temperature
  • Excellent mechanic and chemical property
  • Excellent weatherability
  • Excellent wear property
  • Excellent moldability
  • Good chemical resistance against fuels, oil, fats and many solvents
  • Good creep behavior
  • No tendency to stress crack
  • Very low water absorption
Injection Moulding Condition:
Cylinder temperature 240-265°C
Nozzle temperature 250-265°C
Cooling temperature 20-60°C, water bath
L/D 24~28
Compression ratio 2.5~3.5
Drawing speed 30~250 m/min
Mould shrinkage Mould shrinkage 1.6mm thickness is 1.2-1.8 % under the test method ASTM D955
 
Packaging:
25 kg/aluminum foil laminate paper bag or
850 kg/aluminum foil laminate super sack
 
Application:
Loose tube as optical waveguide sheathing
 

Specifications:
Property
Value
Unit
Test Method
ASTM
Specific Gravity
1.30-1.32
-
D792
Melting Point
225±2
°C
DSC
Coef. of Linear Thermal Expansion
9
cm/cm°C
D696
Heat Deflection Temperature under Load 18.6 kg/cm²
60
°C
D648
4.6kg/cm²
155
Moisture Absorption (24h)
0.06
%
D570
Flammability acc. To UL94 (1.6 mm)
HB
-
UL94
 
 
 
 
Tensile Strength
>500
kg/cm²
D638
Tensile Elongation
>150
%
D638
Flexural Strength
>800
kg/cm²
D790
Flexural Modulus
24000
kg/cm²
D790
Izod Impact Strength-notched 1/4"
>5.0
kg-cm/cm
D256
Hardness-rockwell
118
R
D785
 
 
 
 
Dielectric Strength-2 mm thickness
>20
KV/mm
D149
Volumn Resistivity
>
Omega-cm
D257
Surface Resistivity
>
Omega
D257
Dielectric Constant
3.3
60Hz
D150
Dielectric Dissipation Factor
0.001
60Hz
D150
Arc Resistance
120
SEC
D495

• For reference only.
• All data in the table are the typical values of the material and not the minimum values of the material specifications.

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