Vandar® 8000

About
Vandar 8000 polyester alloy is designed to meet UL94 V-0 requirements at 1/32 inch thickness while retaining excellent impact resistance. The product is characterized by excellent moldability and surface finish. Vandar 8000 is well suited for electrical and electronic applications.&&

Product Description
SupplierCelanese
Genericpolybutylene terephthalate
Material StatusCommercial: Active
FeaturesExcellent Processability,Good surface appearance,High impact resistance,Good Electrical Properties,V-0
AvailabilitysAfrica & Middle East ,North America,Latin America,Asia Pacific,Europe

Technical Data
PHYSICALNominal valueUnitTest method
Density1.37g/cm³ASTM D792
Density1.37g/cm³ISO 1183
Shrinkage rate
MD2.5 to 2.8%ASTM D955
MD2.5 to 2.8%ISO 294-4
Water absorption rate
Equilibrium, 23 ℃, 50% RH0.20%ISO 62

IMPACTNominal valueUnitTest method
Charpy Notched Impact Strength ISO 179/1eA
-30℃15kJ/m²ISO 179/1eA
23℃75kJ/m²ISO 179/1eA
Charpy Unnotch Impact strength ISO 179/1eU
-30℃No Break ISO 179/1eU
23℃No Break ISO 179/1eU
Impact strength of cantilever beam notch
23℃No Break ISO 180/1A

THERMALNominal valueUnitTest method
Hot deformation temperature
1.8 MPa, unannealed54.4ASTM D648
1.8 MPa, unannealed52.0ISO 75-2/A
0.45 MPa, annealed116ASTM D648
0.45 MPa, unannealed127ISO 75-2/B
Melting temperature225ISO 11357-3
Linear coefficient of thermal expansion
TD1.1E-41/℃ISO 11359-2
MD8.9E-51/℃ISO 11359-2

Electrical performanceNominal valueUnitTest method
Surface resistivity1.0E+14ohmsIEC 60093
Volume resistivity1.0E+14ohms·cmIEC 60093
Dielectric strength24kV/mmIEC 60243-1
Relative permittivity IEC 60250
100 Hz4.00 IEC 60250
1 MHz3.60 IEC 60250
Dissipation factor IEC 60250
100 Hz4.5E-3 IEC 60250
1 MHz0.017 IEC 60250
Arc resistance81.0secASTM D495
Compared to the leakage tracing index600VIEC 60112

FLAME CHARACTERISTICSNominal valueUnitTest method
0.90 mmV-0 UL 94

MECHANICALNominal valueUnitTest method
Tensile modulus1700MPaISO 527-2/1A/1
tensile strength
Fracture, 23 ℃34.5MPaASTM D638
Yield, 23 ℃34.5MPaASTM D638
yield30.0MPaISO 527-2/1A/50
50% strain32.0MPaISO 527-2/1A/50
Tensile strain
Fracture, 23 ℃50%ASTM D638
fracture50%ISO 527-2/1A/50
yield4.5%ISO 527-2/1A/50
Nominal tensile fracture strain> 50%ISO 527-2/1A/50
Bending modulus
23℃1650MPaISO 178
bending strength
23℃50.0MPaISO 178
Rockwell hardness
M-level105 ISO 2039-2

Process Conditions
injectionNominal valueUnitTest method
Drying temperature120 to 130°C
Drying time4.0hr
Recommended maximum moisture content0.020%
Hopper temperature20 to 50°C
Barrel rear temperature230 to 240°C
Barrel middle temperature235 to 250°C
Barrel front temperature235 to 250°C
Nozzle temperature240 to 255°C
Processing (melt) temperature235 to 255°C
Mold temperature65 to 96°C
Injection speedModerate-Fast 
Back pressure0.00 to 0.345MPa

Notes
1. Typical properties: these are not to be construed as specifications.
2. 10°C/min
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