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| Physical Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
| Density | 1.03 g/cc | 0.0372 lb/in³ | |||
| 1.22 g/cc | 0.0441 lb/in³ | ISO 1183 | |||
| Water Absorption | 0.31 % @Thickness 2.00 mm |
0.31 % @Thickness 0.0787 in |
Sim. to ISO 62 | ||
| Moisture Absorption | 0.120 % @Thickness 2.00 mm |
0.120 % @Thickness 0.0787 in |
Sim. to ISO 62 | ||
| Viscosity | 219200 cP @Shear Rate 5000 1/s, Temperature 250 °C |
219200 cP @Shear Rate 5000 1/s, Temperature 482 °F |
ISO 11403-1 -2 | ||
| 742560 cP @Shear Rate 500 1/s, Temperature 250 °C |
742560 cP @Shear Rate 500 1/s, Temperature 482 °F |
ISO 11403-1 -2 | |||
| Linear Mold Shrinkage, Flow | 0.019 cm/cm | 0.019 in/in | ISO 294-4 2577 | ||
| 0.025 cm/cm | 0.025 in/in | annealed; ISO 294-4 | |||
| Linear Mold Shrinkage, Transverse | 0.018 cm/cm | 0.018 in/in | ISO 294-4 2577 | ||
| Mechanical Properties | Metric | English | Comments | ||
| Hardness, Rockwell R | 104 | 104 | ISO 2039-2 | ||
| Tensile Stress | 7.03 MPa @Strain 3.09 %, Temperature 90.0 °C |
1020 psi @Strain 3.09 %, Temperature 194 °F |
ISO 11403-1 -2 | ||
| 10.05 MPa @Strain 0.620 %, Temperature 23.0 °C |
1458 psi @Strain 0.620 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
| 14.2 MPa @Strain 12.19 %, Temperature 90.0 °C |
2060 psi @Strain 12.19 %, Temperature 194 °F |
ISO 11403-1 -2 | |||
| 15.53 MPa @Strain 2.75 %, Temperature 40.0 °C |
2252 psi @Strain 2.75 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
| 16.0 MPa @Strain 21.29 %, Temperature 90.0 °C |
2320 psi @Strain 21.29 %, Temperature 194 °F |
ISO 11403-1 -2 | |||
| 16.6 MPa @Strain 30.38 %, Temperature 90.0 °C |
2410 psi @Strain 30.38 %, Temperature 194 °F |
ISO 11403-1 -2 | |||
| 23.84 MPa @Strain 10.69 %, Temperature 40.0 °C |
3458 psi @Strain 10.69 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
| 25.71 MPa @Strain 18.63 %, Temperature 40.0 °C |
3729 psi @Strain 18.63 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
| 26.21 MPa @Strain 26.77 %, Temperature 40.0 °C |
3801 psi @Strain 26.77 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
| 30.79 MPa @Strain 2.40 %, Temperature 23.0 °C |
4466 psi @Strain 2.40 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
| 34.28 MPa @Strain 4.18 %, Temperature 23.0 °C |
4972 psi @Strain 4.18 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
| 34.65 MPa @Strain 5.97 %, Temperature 23.0 °C |
5026 psi @Strain 5.97 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
| 5.00 MPa @Strain 0.325 %, Time 3600 sec |
725 psi @Strain 0.325 %, Time 1.00 hour |
isochronous; ISO 11403-1 -2 | |||
| 5.00 MPa @Strain 0.355 %, Time 36000 sec |
725 psi @Strain 0.355 %, Time 10.0 hour |
isochronous; ISO 11403-1 -2 | |||
| 5.00 MPa @Strain 0.423 %, Time 360000 sec |
725 psi @Strain 0.423 %, Time 100 hour |
isochronous; ISO 11403-1 -2 | |||
| 5.00 MPa @Strain 0.558 %, Time 3.60e+6 sec |
725 psi @Strain 0.558 %, Time 1000 hour |
isochronous; ISO 11403-1 -2 | |||
| 5.00 MPa @Strain 0.846 %, Time 3.60e+7 sec |
725 psi @Strain 0.846 %, Time 10000 hour |
isochronous; ISO 11403-1 -2 | |||
| Tensile Strength, Yield | 38.0 MPa | 5510 psi | ISO 527-1/-2 | ||
| Elongation at Break | >= 50 % | >= 50 % | Nominal; ISO 527-1/-2 | ||
| Elongation at Yield | 7.0 % | 7.0 % | ISO 527-1/-2 | ||
| Tensile Modulus | 1.70 GPa | 247 ksi | ISO 527-1/-2 | ||
| 0.177 GPa @Temperature 120 °C |
25.7 ksi @Temperature 248 °F |
ISO 11403-1 -2 | |||
| 0.800 GPa @Temperature 40.0 °C |
116 ksi @Temperature 104 °F |
ISO 11403-1 -2 | |||
| 2.30 GPa @Temperature -40.0 °C |
334 ksi @Temperature -40.0 °F |
ISO 11403-1 -2 | |||
| Flexural Strength | 50.0 MPa | 7250 psi | ISO 178 | ||
| Flexural Modulus | 1.55 GPa | 225 ksi | ISO 178 | ||
| Secant Modulus | 0.12095 GPa @Strain 21.48 %, Temperature 40.0 °C |
17.543 ksi @Strain 21.48 %, Temperature 104 °F |
ISO 11403-1 -2 | ||
| 0.223 GPa @Strain 10.69 %, Temperature 40.0 °C |
32.3 ksi @Strain 10.69 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
| 0.565 GPa @Strain 2.75 %, Temperature 40.0 °C |
81.9 ksi @Strain 2.75 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
| 0.720 GPa @Strain 4.79 %, Temperature 23.0 °C |
104 ksi @Strain 4.79 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
| 1.28 GPa @Strain 2.40 %, Temperature 23.0 °C |
186 ksi @Strain 2.40 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
| 1.62 GPa @Strain 0.620 %, Temperature 23.0 °C |
235 ksi @Strain 0.620 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
| Izod Impact, Notched (ISO) | 60.0 kJ/m² | 28.6 ft-lb/in² | ISO 180/1A | ||
| 10.0 kJ/m² @Temperature -40.0 °C |
4.76 ft-lb/in² @Temperature -40.0 °F |
ISO 180/1A | |||
| 15.0 kJ/m² @Temperature -30.0 °C |
7.14 ft-lb/in² @Temperature -22.0 °F |
ISO 180/1A | |||
| Izod Impact, Unnotched (ISO) | NB | NB | ISO 180/1U | ||
| 270 kJ/m² @Temperature -40.0 °C |
128 ft-lb/in² @Temperature -40.0 °F |
ISO 180/1U | |||
| NB @Temperature -30.0 °C |
NB @Temperature -22.0 °F |
ISO 180/1U | |||
| Charpy Impact Unnotched | NB | NB | ISO 179/1eU | ||
| NB @Temperature -30.0 °C |
NB @Temperature -22.0 °F |
ISO 179/1eU | |||
| Charpy Impact, Notched | 8.50 J/cm² | 40.4 ft-lb/in² | ISO 179/1eA | ||
| 1.00 J/cm² @Temperature -30.0 °C |
4.76 ft-lb/in² @Temperature -22.0 °F |
ISO 179/1eA | |||
| 1.00 J/cm² @Temperature -40.0 °C |
4.76 ft-lb/in² @Temperature -40.0 °F |
ISO 179/1eA | |||
| Tensile Creep Modulus, 1 hour | 1500 MPa @Pressure 10.0 MPa, Temperature 23.0 °C |
217000 psi @Pressure 1450 psi, Temperature 73.4 °F |
ISO 11403-1 -2 | ||
| 1510 MPa @Pressure 8.00 MPa, Temperature 23.0 °C |
219000 psi @Pressure 1160 psi, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
| 1530 MPa @Pressure 6.00 MPa, Temperature 23.0 °C |
222000 psi @Pressure 870 psi, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
| 1550 MPa @Pressure 4.00 MPa, Temperature 23.0 °C |
224000 psi @Pressure 580 psi, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
| 1560 MPa @Pressure 2.00 MPa, Temperature 23.0 °C |
226000 psi @Pressure 290 psi, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
| Tensile Creep Modulus, 1000 hours | 714 MPa @Pressure 10.0 MPa, Temperature 23.0 °C |
104000 psi @Pressure 1450 psi, Temperature 73.4 °F |
ISO 11403-1 -2 | ||
| 770 MPa @Pressure 8.00 MPa, Temperature 23.0 °C |
112000 psi @Pressure 1160 psi, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
| 850 MPa @Pressure 6.00 MPa, Temperature 23.0 °C |
123000 psi @Pressure 870 psi, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
| 939 MPa @Pressure 4.00 MPa, Temperature 23.0 °C |
136000 psi @Pressure 580 psi, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
| 1000 MPa @Pressure 2.00 MPa, Temperature 23.0 °C |
146000 psi @Pressure 290 psi, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
| Electrical Properties | Metric | English | Comments | ||
| Volume Resistivity | >= 1.00e+15 ohm-cm | >= 1.00e+15 ohm-cm | IEC 60093 | ||
| Surface Resistance | 1.00e+15 ohm | 1.00e+15 ohm | IEC 60093 | ||
| Dielectric Strength | 27.0 kV/mm | 686 kV/in | IEC 60243-1 | ||
| Dissipation Factor | 0.019 @Frequency 1.00e+6 Hz |
0.019 @Frequency 1.00e+6 Hz |
IEC 60250 | ||
| 0.020 @Frequency 100 Hz |
0.020 @Frequency 100 Hz |
IEC 60250 | |||
| Comparative Tracking Index | 600 V | 600 V | IEC 60112 | ||
| Thermal Properties | Metric | English | Comments | ||
| CTE, linear, Parallel to Flow | 190 µm/m-°C | 106 µin/in-°F | ISO 11359-1/-2 | ||
| CTE, linear, Transverse to Flow | 190 µm/m-°C | 106 µin/in-°F | ISO 11359-1/-2 | ||
| Specific Heat Capacity | 2.10 J/g-°C | 0.502 BTU/lb-°F | |||
| Thermal Conductivity | 0.200 W/m-K | 1.39 BTU-in/hr-ft²-°F | of melt | ||
| Melting Point | 225 °C | 437 °F | 10°C/min; ISO 11357-1/-3 | ||
| Deflection Temperature at 0.46 MPa (66 psi) | 100 °C | 212 °F | ISO 75-1/-2 | ||
| 145 °C | 293 °F | annealed; ISO 75-1/-2 | |||
| Deflection Temperature at 1.8 MPa (264 psi) | 50.0 °C | 122 °F | ISO 75-1/-2 | ||
| Vicat Softening Point | 125 °C | 257 °F | 50°C/h 50N; ISO 306 | ||
| Flammability, UL94 | HB @Thickness 1.50 mm |
HB @Thickness 0.0591 in |
IEC 60695-11-10 | ||
| HB @Thickness 0.800 mm |
HB @Thickness 0.0315 in |
IEC 60695-11-10 | |||
| Flame Spread | 38 mm/min @Thickness 1.00 mm |
1.5 in/min @Thickness 0.0394 in |
ISO 3795 (FMVSS 302) | ||
| Oxygen Index | 19 % | 19 % | ISO 4589-1/-2 | ||
| De |
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| Additives | Release agent | ||||
| Delivery form | Pellets | ||||
| Part Marking Code | >PBT-HI< | ISO 11469 | |||
| Processing | Coatable | ||||
| Injection Moulding | |||||
| Other Extrusion | |||||
| Profile Extrusion | |||||
| Sheet Extrusion | |||||
| Regional Availability | Asia Pacific | ||||
| Europe | |||||
| Global | |||||
| Near East/Africa | |||||
| North America | |||||
| South and Central America | |||||
| Resin Identification | PBT-HI | ||||
| UL recognition | UL | ||||
聚对苯二甲酸丁二醇酯，英文名polybutylene terephthalate（简称PBT），属于聚酯系列，是由1.4-pbt丁二醇(1.4-Butylene glycol)与对苯二甲酸(TPA)或者对苯二甲酸酯(DMT)聚缩合而成，并经由混炼程序制成的乳白色半透明到不透明、结晶型热塑性聚酯树脂。与PET一起统称为热塑性聚酯，或饱和聚酯。
⒈优良的机械性能，机械强度高，耐疲劳性和尺寸稳定好。蠕变也小，这些性能在高温条件下也极少有变化。
⒉生产PBT所消耗的能量是工程塑料中最低的的，这对于世界范围内能源紧缺的情况下，具有十分重要的意义。
⒊耐热老化性优异，增强后的UL温度指数达到120~140℃，此外，户外长期老化性也很好。
⒋耐溶剂好，无应力开裂。
⒌PBT易于阻燃，可达UL94V-0级，由于与阻燃剂亲和性能好，所以容易开发反应型或添加型的阻燃品级。阻燃产品在电子电器工业中获得广泛应用。
⒍PBT遇水易分解，在高温、高湿环境下使用需谨慎。
⒎优良的电气性能，体积电阻率及介电强度高，耐电弧性优良，吸湿性极小，在潮湿及高温环境下，也能保持电性能稳定，是制造电子、电器零件的理想材料。
⒏易成型加工和二次加工，易用普通设备注塑或挤塑。由于结晶速度快，流动性好，模具温度也比其他工程材料要求低，在加工薄壁制件时仅需几秒钟，对大部件也只需40-60s即可。
PBT中文名称聚对苯二甲酸丁酯，简称饱和聚酯，系高结晶性热可塑性塑料。
优点：1、机械性质安定抗张强度与抗张模数和尼龙相似；2、摩擦系数小有自润性；
3、吸水率低；4、电气性质优良；5、尺寸安定性良好；6、耐药品性、耐油性极佳。
用途：1、电子电器：无熔线断电器、电磁开关、驰返变压器、家电把手、连接器、外壳等；
2、汽车：车门把手、保险杆、分电盘盖、挡泥板、导线护壳、轮圈盖等；
3、工业零件：OA风扇、键盘、钓具卷线器、零件、灯罩等。
特点：PBT为乳白色半透明到不透明、结晶型热塑性聚酯。具有高耐热性、韧性、耐疲劳性，自润滑、低摩擦系数，耐候性、吸水率低，仅为0.1%，在潮湿环境中仍保持各种物性（包括电性能），电绝缘性，但介电损耗大。耐热水、碱类、酸类、油类、但易受卤化烃侵蚀，耐水解性差，低温下可迅速结晶，成型性良好。PBT 结晶速度快，最适宜加工方法为注塑，其他方法还有挤出、吹塑、涂覆和各种二次加工成型，成型前需预干燥，水分含量要降至0.02%。PBT（增强、改性PBT）主要用于汽车、电子电器、工业机械和聚合物合金、共混工业。如作为汽车中的分配器、车体部件、点火器线圈骨架、绝缘盖、排气系统零部件、摩托车点火器、电子电器工业中如电视机的偏转线圈，显像管和电位器支架，伴音输出变压器骨架，适配器骨架，开关接插件、电风扇、电冰箱、洗衣机电机端盖、轴套.
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