PBT plastic is a kind of plastic composed of polybutylene terephthalate. It is a semi crystalline material with very good chemical stability, mechanical strength, electrical insulation characteristics and thermal stability.
1. Mechanical properties: high strength, fatigue resistance, stable size and small creep (little change under high temperature conditions)
2. Heat aging resistance: the enhanced UL temperature index reaches 120 ~ 140 ℃ (outdoor long-term aging resistance is also very good);
3. Excellent long-term thermal deterioration.
4. Low water absorption, good mechanical properties and dimensional stability.
5. Good weather resistance.
6. Good abrasion resistance and abrasion resistance.
7. Good fluidity and crystallinity, suitable for rapid prototyping.
8. The improvement effect of glass fiber physical property is good.
9. Easy to reach V-0 level, physical properties can maintain electrical performance:
Insulation performance: excellent (wet and high temperature can also maintain stable electrical performance, and it is an ideal material for manufacturing electronic and electrical parts);
Dielectric coefficient: 3.0-3.2;
Arc resistance: 120s;
The valox family of thermoplastic polyester resins are semi-crystalline materials based on polybutylene terephthalate (PBT) and/or polyethylene terephthalate (PET) polymers. Valox resin formulations include many performance-matched grades designed to provide application-specific property profiles. Valox resins combine heat and chemical resistance, as well as outstanding electrical properties with exceptionally good processability and surface appearance.
S-Plastics valox 420SE0 is a 30% glass filled, flame retardant Polybutylene Terephthalate (PBT) injection moldable grade with excellent chemical resistance. It has a UL94V0@0.71mm and 5VA@2.0mm flame rating. This is a good candidate for a variety of applications in the electrical industry.
Numerous applications; edge trimmers, food mixer motor stator and commutator, cooling fan, connectors,
bobbins, switches etc
Properties
| MECHANICAL |
Value |
Unit |
Standard |
| Tensile Stress, yld, Type I, 5 mm/min |
95 |
MPa |
ASTM D 638 |
| Tensile Stress, brk, Type I, 5 mm/min |
95 |
MPa |
ASTM D 638 |
| Tensile Strain, yld, Type I, 5 mm/min |
1.2 |
% |
ASTM D 638 |
| Tensile Strain, brk, Type I, 5 mm/min |
1.2 |
% |
ASTM D 638 |
| Tensile Modulus, 5 mm/min |
11500 |
MPa |
ASTM D 638 |
| Flexural Stress, brk, 1.3 mm/min, 50 mm span |
186 |
MPa |
ASTM D 790 |
| Flexural Modulus, 1.3 mm/min, 50 mm span |
9400 |
MPa |
ASTM D 790 |
| Hardness, Rockwell R |
119 |
- |
ASTM D 785 |
| IMPACT |
Value |
Unit |
Standard |
| Izod Impact, unnotched, 23°C |
640 |
J/m |
ASTM D 4812 |
| Izod Impact, notched, 23°C |
69 |
J/m |
ASTM D 256 |
| Izod Impact, notched, -30°C |
64 |
J/m |
ASTM D 256 |
| Instrumented Impact Total Energy, 23°C |
6 |
J |
ASTM D 3763 |
| THERMAL |
Value |
Unit |
Standard |
| Vicat Softening Temp, Rate B/50 |
200 |
°C |
ASTM D 1525 |
| HDT, 0.45 MPa, 3.2 mm, unannealed |
212 |
°C |
ASTM D 648 |
| HDT, 1.82 MPa, 3.2mm, unannealed |
200 |
°C |
ASTM D 648 |
| HDT, 0.45 MPa, 6.4 mm, unannealed |
215 |
°C |
ASTM D 648 |
| HDT, 1.82 MPa, 6.4 mm, unannealed |
204 |
°C |
ASTM D 648 |
| CTE, -40°C to 40°C, flow |
2.52E-05 |
1/°C |
ASTM E 831 |
| CTE, 60°C to 138°C, flow |
2.52E-05 |
1/°C |
ASTM E 831 |
| Relative Temp Index, Elec |
130 |
°C |
UL 746B |
| Relative Temp Index, Mech w/impact |
130 |
°C |
UL 746B |
| Relative Temp Index, Mech w/o impact |
140 |
°C |
UL 746B |
| PHYSICAL |
Value |
Unit |
Standard |
| Specific Gravity |
1.61 |
- |
ASTM D 792 |
| Specific Volume |
0.62 |
cm³/g |
ASTM D 792 |
| Water Absorption, 24 hours |
0.06 |
% |
ASTM D 570 |
| Mold Shrinkage, flow, 3.2 mm |
0.5 - 0.7 |
% |
S-Plastics Method |
| Mold Shrinkage, flow, 1.5-3.2 mm |
0.3 - 0.5 |
% |
S-Plastics Method |
| Mold Shrinkage, flow, 3.2-4.6 mm |
0.5 - 0.8 |
% |
S-Plastics Method |
| Mold Shrinkage, xflow, 1.5-3.2 mm |
0.4 - 0.6 |
% |
S-Plastics Method |
| Mold Shrinkage, xflow, 3.2-4.6 mm |
0.6 - 1 |
% |
S-Plastics Method |
| ELECTRICAL |
Value |
Unit |
Standard |
| Volume Resistivity |
>3.4E+16 |
Ohm-cm |
ASTM D 257 |
| Dielectric Strength, in air, 3.2 mm |
19.2 |
kV/mm |
ASTM D 149 |
| Dielectric Strength, in oil, 1.6 mm |
24 |
kV/mm |
ASTM D 149 |
| Relative Permittivity, 100 Hz |
3.8 |
- |
ASTM D 150 |
| Relative Permittivity, 1 MHz |
3.7 |
- |
ASTM D 150 |
| Dissipation Factor, 100 Hz |
0.002 |
- |
ASTM D 150 |
| Dissipation Factor, 1 MHz |
0.02 |
- |
ASTM D 150 |
| Arc Resistance, Tungsten {PLC} |
6 |
PLC Code |
ASTM D 495 |
| Hot Wire Ignition {PLC) |
2 |
PLC Code |
UL 746A |
| High Voltage Arc Track Rate {PLC} |
4 |
PLC Code |
UL 746A |
| High Ampere Arc Ign, surface {PLC} |
0 |
PLC Code |
UL 746A |
| Comparative Tracking Index (UL) {PLC} |
3 |
PLC Code |
UL 746A |
| FLAME CHARACTERISTICS |
Value |
Unit |
Standard |
| UL Recognized, 94V-0 Flame Class Rating (3) |
0.71 |
mm |
UL 94 |
| UL Recognized, 94-5VA Rating (3) |
2 |
mm |
UL 94 |
| CSA (See File for complete listing) |
LS88480 |
File No. |
CSA LISTED |
| Oxygen Index (LOI) |
32 |
% |
ASTM D 2863 |
| UV-light, water exposure/immersion |
F2 |
- |
UL 746C |
| Source GMD, last updated:09/09/2008 |
|
|
Processing
| Parameter |
|
|
| Injection Molding |
Value |
Unit |
| Drying Temperature |
120 |
°C |
| Drying Time |
3 - 4 |
hrs |
| Drying Time (Cumulative) |
12 |
hrs |
| Maximum Moisture Content |
0.02 |
% |
| Melt Temperature |
255 - 275 |
°C |
| Nozzle Temperature |
250 - 270 |
°C |
| Front - Zone 3 Temperature |
255 - 275 |
°C |
| Middle - Zone 2 Temperature |
250 - 270 |
°C |
| Rear - Zone 1 Temperature |
245 - 265 |
°C |
| Mold Temperature |
65 - 90 |
°C |
| Back Pressure |
0.3 - 0.7 |
MPa |
| Screw Speed |
50 - 80 |
rpm |
| Shot to Cylinder Size |
40 - 80 |
% |
| Vent Depth |
0.025 - 0.038 |
mm |
| Source GMD, last updated:09/09/2008 |
|
Hot-sale product(in stock)
PBT: 325,325FC,310,310SE0
PC+PBT: 357 357U,5220U,V3900WX
PBT + glass filled: DR51, DR48, 420 420se0, 553, 508, 420HP
Our warehouse
With a strong sales network and strength, we have warehousing services in Guangzhou, Dongguan, Shenzhen free trade zone, Hong Kong and other four places (conventional product inventory exceeds 1000 tons). We can provide customers with rapid response, professional service and excellent products!
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