Pocan® B4239

30% Glass Reinforced, Injection Molding, Flame Retardant

General Information

Pocan® is a high-quality brand of polybutylene terephthalate (PBT) and PBT blends crafted by Envalior. Pocan is known for its impressive resistance to heat and chemicals, outstanding electrical properties, strength and hardness. It is designed to cater to a wide range of industries, including automotive, electrical/electronics, lighting, household appliances, and sports & leisure.
Special features
Regulatory Affairs
Processing technology
Injection Molding

Rheological properties

Melt volume-flow rate
37
cm³/10min
Temperature
260
°C
Load
5
kg
Molding shrinkage (parallel)
0.3
%
Molding shrinkage (normal)
0.9
%

Mechanical properties

Tensile modulus
11500
MPa
Tensile modulus (-40°C)
12300
MPa
Tensile modulus (40°C)
8840
MPa
Tensile modulus (100°C)
5050
MPa
Tensile modulus (120°C)
4460
MPa
Tensile modulus (140°C)
3940
MPa
Tensile modulus (160°C)
3430
MPa
Tensile modulus (180°C)
2350
MPa
Tensile modulus (200°C)
1750
MPa
Stress at break
125
MPa
Strain at break
2.1
%
Flexural modulus
10500
MPa
Flexural strength
200
MPa
Flexural strain at flexural strength
2.6
%
Charpy impact strength (+23°C)
50
kJ/m²
Charpy impact strength (-30°C)
50
kJ/m²
Charpy notched impact strength (+23°C)
8.2
kJ/m²
Charpy notched impact strength (-30°C)
7.6
kJ/m²
Izod impact strength (+23°C)
45
kJ/m²
Izod impact strength (-30°C)
45
kJ/m²
Puncture - maximum force (+23°C)
669
N
Puncture - maximum force (-30°C)
649
N
Puncture energy (+23°C)
2.3
J
Puncture energy (-30°C)
2.1
J

Thermal properties

Melting temperature (10°C/min)
225
°C
Temp. of deflection under load (1.80 MPa)
200
°C
Temp. of deflection under load (0.45 MPa)
220
°C
Temp. of deflection under load (8.00 MPa)
135
°C
Coeff. of linear therm. expansion (parallel)
0.2
E-4/°C
Coeff. of linear therm. expansion (normal)
0.9
E-4/°C
Burning Behav. at 0.75 mm nom. thickn.
V-0
class
Thickness tested
0.75
mm
Burning Behav. at 1.5 mm nom. thickn.
V-0
class
Thickness tested
1.5
mm
UL recognition
Yes
-
Burning Behav. at 3.0 mm nom. thickn.
V-0
class
Thickness tested
3
mm
UL recognition
Yes
-
Burning Behav. 5V at thickness h
5VA
class
Thickness tested
1.5
mm
UL recognition
Yes
-
Oxygen index
32
%
Ball pressure temperature
213
°C
Glow Wire Flammability Index GWFI
960
°C
GWFI (Thickness (1) tested)
0.75
mm
Glow Wire Ignition Temperature GWIT
725
°C
GWIT (Thickness (1) tested)
0.75
mm
Glow Wire Ignition Temperature GWIT
725
°C
GWIT (Thickness (2) tested)
1.5
mm
Glow Wire Ignition Temperature GWIT
725
°C
GWIT (Thickness (3) tested)
3
mm
Relative Temperature Index - electrical
130
°C
RTI electrical (Thickness (1) tested)
0.4
mm
Relative Temperature Index - with impact
130
°C
RTI with impact (Thickness (1) tested)
0.4
mm
Relative Temperature Index - with impact
130
°C
RTI with impact (Thickness (2) tested)
0.75
mm
Relative Temperature Index - without impact
130
°C
RTI without impact (Thickness (1) tested)
0.4
mm
Relative Temperature Index - without impact
140
°C
RTI without impact (Thickness (2) tested)
0.75
mm

Electrical properties

Relative permittivity (100Hz)
3.9
-
Relative permittivity (1 MHz)
3.8
-
Dissipation factor (100 Hz)
60
E-4
Dissipation factor (1 MHz)
520
E-4
Volume resistivity
>1E13
Ohm*m
Surface resistivity
>1E15
Ohm
Electric strength
35
kV/mm
Comparative tracking index
275
V
Comparative tracking index (PLC)
2
class

Other properties

Water absorption
0.35
%
Humidity absorption
0.1
%
Density
1650
kg/m³

Material specific properties

Drying temperature circulating air dryer
120
°C
Drying time circulating air dryer
4-8
h
Residual moisture content
0.00-0.02
%
Melt temperature (Tmin - Tmax)
240-260
°C
Mold temperature
80-100
°C

Diagrams