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CELANEX® PBT
PBT
Characteristics
Regional availability
North America
Europe
Asia Pacific
South and Central America
Near East/Africa
Global
Processing
Injection Moulding, Film Extrusion, Extrusion, Sheet Extrusion, Other Extrusion
Delivery form
Pellets
Product Text
Celanex 1700A is a very high molecular weight grade of unreinforced polybutylene terephthalate for injection molding and extrusion applications.
Product information
Value
Test Norm
Resin Identification
PBT
*** 1043
Part Marking Code
>PBT<
*** 11469
Rheological properties
Value
Unit
Test Norm
Melt volume-flow rate
4.5
cm³/10min
*** 1133
Temperature
250
°C
Load
2.16
kg
Melt mass-flow rate
5
g/10min
*** 1133
Melt mass-flow rate, Temperature
250
°C
Melt mass-flow rate, Load
2.16
kg
Viscosity number
130
cm³/g
*** 307, 1628
Moulding shrinkage range, parallel
1.8 - 2
%
*** 294-4, 2577
Moulding shrinkage range, normal
1.8 - 2
%
*** 294-4, 2577
Mechanical properties
Value
Unit
Test Norm
Tensile modulus
2500
MPa
*** 527-1/-2
Tensile stress at yield, 50mm/min
60
MPa
*** 527-1/-2
Tensile strain at yield, 50mm/min
5
%
*** 527-1/-2
Tensile stress at 50% strain
28
MPa
*** 527-1/-2
Tensile stress at break, 50mm/min
35
MPa
*** 527-1/-2
Nominal strain at break
>50
%
*** 527-1/-2
Tensile strain at break, 50mm/min
120
%
*** 527-1/-2
Flexural modulus
2200
MPa
*** 178
Flexural strength
80
MPa
*** 178
Charpy impact strength, 23°C
N
kJ/m²
*** 179/1eU
Charpy impact strength, -30°C
220
kJ/m²
*** 179/1eU
Charpy notched impact strength, 23°C
7.5
kJ/m²
*** 179/1eA
Charpy notched impact strength, -30°C
7
kJ/m²
*** 179/1eA
Izod notched impact strength, 23°C
5.5
kJ/m²
*** 180/1A
Hardness, Rockwell, M-scale
72
*** 2039-2
Poisson&#39;s ratio
0.38[C]
Shore D hardness, 15s
80
*** 48-4 / *** 868
[C]: Calculated
Thermal properties
Value
Unit
Test Norm
Melting temperature, 10°C/min
225
°C
*** 11357-1/-3
Glass transition temperature, 10°C/min
60
°C
*** 11357-1/-3
Temperature of deflection under load, 1.8 MPa
50
°C
*** 75-1/-2
Temperature of deflection under load, 0.45 MPa
150
°C
*** 75-1/-2
Vicat softening temperature, 50°C/h 50N
182
°C
*** 306
Coefficient of linear thermal expansion (CLTE), parallel
110
E-6/K
*** 11359-1/-2
Coefficient of linear thermal expansion (CLTE), normal
100
E-6/K
*** 11359-1/-2
Flammability
Value
Unit
Test Norm
Burning Behav. at thickness h
HB
class
IEC 60695-11-10
Thickness tested
0.75
mm
IEC 60695-11-10
Oxygen index
22
%
*** 4589-1/-2
Electrical properties
Value
Unit
Test Norm
Relative permittivity, 100Hz
4
IEC 62631-2-1
Relative permittivity, 1MHz
3.6
IEC 62631-2-1
Dissipation factor, 100Hz
14
E-4
IEC 62631-2-1
Dissipation factor, 1MHz
210
E-4
IEC 62631-2-1
Volume resistivity
>1E13
Ohm.m
IEC 62631-3-1
Surface resistivity
>1E15
Ohm
IEC 62631-3-2
Electric strength
23
kV/mm
IEC 60243-1
Physical/Other properties
Value
Unit
Test Norm
Humidity absorption, 2mm
0.2
%
Sim. to *** 62
Water absorption, 2mm
0.45
%
Sim. to *** 62
Water absorption, Immersion 24h
0.08
%
Sim. to *** 62
Density
1310
kg/m³
*** 1183
Injection
Value
Unit
Drying Recommended
yes
Drying Temperature
120
°C
Drying Time, Dehumidified Dryer
4
h
Processing Moisture Content
≤0.04
%
Melt Temperature Optimum
250
°C
Min. melt temperature
240
°C
Max. melt temperature
260
°C
Screw tangential speed
0.1 - 0.3
m/s
Mold Temperature Optimum
80
°C
Min. mould temperature
60
°C
Max. mould temperature
130
°C
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