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Physical Properties | Metric | English | Comments | ||
---|---|---|---|---|---|
Density | 1.12 g/cc | 0.0405 lb/in³ | |||
1.32 g/cc | 0.0477 lb/in³ | ISO 1183 | |||
Water Absorption | 0.40 % @Thickness 2.00 mm |
0.40 % @Thickness 0.0787 in |
Sim. to ISO 62 | ||
Moisture Absorption | 0.200 % @Thickness 2.00 mm |
0.200 % @Thickness 0.0787 in |
Sim. to ISO 62 | ||
Viscosity | 123300 cP @Shear Rate 5000 1/s, Temperature 260 °C |
123300 cP @Shear Rate 5000 1/s, Temperature 500 °F |
ISO 11403-1 -2 | ||
142200 cP @Shear Rate 5000 1/s, Temperature 250 °C |
142200 cP @Shear Rate 5000 1/s, Temperature 482 °F |
ISO 11403-1 -2 | |||
165000 cP @Shear Rate 5000 1/s, Temperature 240 °C |
165000 cP @Shear Rate 5000 1/s, Temperature 464 °F |
ISO 11403-1 -2 | |||
396400 cP @Shear Rate 500 1/s, Temperature 260 °C |
396400 cP @Shear Rate 500 1/s, Temperature 500 °F |
ISO 11403-1 -2 | |||
505900 cP @Shear Rate 500 1/s, Temperature 250 °C |
505900 cP @Shear Rate 500 1/s, Temperature 482 °F |
ISO 11403-1 -2 | |||
626100 cP @Shear Rate 10.0 1/s, Temperature 260 °C |
626100 cP @Shear Rate 10.0 1/s, Temperature 500 °F |
ISO 11403-1 -2 | |||
641900 cP @Shear Rate 500 1/s, Temperature 240 °C |
641900 cP @Shear Rate 500 1/s, Temperature 464 °F |
ISO 11403-1 -2 | |||
918900 cP @Shear Rate 10.0 1/s, Temperature 250 °C |
918900 cP @Shear Rate 10.0 1/s, Temperature 482 °F |
ISO 11403-1 -2 | |||
1.3929e+6 cP @Shear Rate 10.0 1/s, Temperature 240 °C |
1.3929e+6 cP @Shear Rate 10.0 1/s, Temperature 464 °F |
ISO 11403-1 -2 | |||
Viscosity Test | 150 cm³/g | 150 cm³/g | ISO 307 1157 1628 | ||
Linear Mold Shrinkage, Flow | 0.017 cm/cm | 0.017 in/in | ISO 294-4 2577 | ||
Linear Mold Shrinkage, Transverse | 0.015 cm/cm | 0.015 in/in | ISO 294-4 2577 | ||
Melt Flow | 10 g/10 min @Load 2.16 kg, Temperature 250 °C |
10 g/10 min @Load 4.76 lb, Temperature 482 °F |
ISO 1133 | ||
Mechanical Properties | Metric | English | Comments | ||
Tensile Stress | 0.410 MPa @Strain 0.170 %, Temperature 150 °C |
59.5 psi @Strain 0.170 %, Temperature 302 °F |
ISO 11403-1 -2 | ||
0.680 MPa @Strain 0.170 %, Temperature 90.0 °C |
98.6 psi @Strain 0.170 %, Temperature 194 °F |
ISO 11403-1 -2 | |||
4.10 MPa @Strain 2.28 %, Temperature 150 °C |
595 psi @Strain 2.28 %, Temperature 302 °F |
ISO 11403-1 -2 | |||
6.67 MPa @Strain 4.80 %, Temperature 150 °C |
967 psi @Strain 4.80 %, Temperature 302 °F |
ISO 11403-1 -2 | |||
7.25 MPa @Strain 2.25 %, Temperature 90.0 °C |
1050 psi @Strain 2.25 %, Temperature 194 °F |
ISO 11403-1 -2 | |||
8.25 MPa @Strain 7.41 %, Temperature 150 °C |
1200 psi @Strain 7.41 %, Temperature 302 °F |
ISO 11403-1 -2 | |||
12.07 MPa @Strain 4.64 %, Temperature 90.0 °C |
1751 psi @Strain 4.64 %, Temperature 194 °F |
ISO 11403-1 -2 | |||
13.63 MPa @Strain 0.430 %, Temperature -40.0 °C |
1977 psi @Strain 0.430 %, Temperature -40.0 °F |
ISO 11403-1 -2 | |||
14.34 MPa @Strain 1.27 %, Temperature 40.0 °C |
2080 psi @Strain 1.27 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
15.07 MPa @Strain 7.13 %, Temperature 90.0 °C |
2186 psi @Strain 7.13 %, Temperature 194 °F |
ISO 11403-1 -2 | |||
16.61 MPa @Strain 0.700 %, Temperature 23.0 °C |
2409 psi @Strain 0.700 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
22.95 MPa @Strain 0.820 %, Temperature -20.0 °C |
3329 psi @Strain 0.820 %, Temperature -4.00 °F |
ISO 11403-1 -2 | |||
24.96 MPa @Strain 3.64 %, Temperature 40.0 °C |
3620 psi @Strain 3.64 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
27.2 MPa @Strain 1.04 %, Temperature 0.000 °C |
3950 psi @Strain 1.04 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
29.39 MPa @Strain 6.18 %, Temperature 40.0 °C |
4263 psi @Strain 6.18 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
32.22 MPa @Strain 8.75 %, Temperature 40.0 °C |
4673 psi @Strain 8.75 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
45.2 MPa @Strain 2.17 %, Temperature 23.0 °C |
6560 psi @Strain 2.17 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
48.4 MPa @Strain 1.69 %, Temperature -40.0 °C |
7020 psi @Strain 1.69 %, Temperature -40.0 °F |
ISO 11403-1 -2 | |||
51.39 MPa @Strain 2.00 %, Temperature -20.0 °C |
7454 psi @Strain 2.00 %, Temperature -4.00 °F |
ISO 11403-1 -2 | |||
54.78 MPa @Strain 2.40 %, Temperature 0.000 °C |
7945 psi @Strain 2.40 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
65.05 MPa @Strain 4.22 %, Temperature 0.000 °C |
9435 psi @Strain 4.22 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
70.55 MPa @Strain 3.31 %, Temperature -20.0 °C |
10230 psi @Strain 3.31 %, Temperature -4.00 °F |
ISO 11403-1 -2 | |||
71.25 MPa @Strain 2.81 %, Temperature -40.0 °C |
10330 psi @Strain 2.81 %, Temperature -40.0 °F |
ISO 11403-1 -2 | |||
77.04 MPa @Strain 5.18 %, Temperature -20.0 °C |
11170 psi @Strain 5.18 %, Temperature -4.00 °F |
ISO 11403-1 -2 | |||
87.67 MPa @Strain 4.16 %, Temperature -40.0 °C |
12720 psi @Strain 4.16 %, Temperature -40.0 °F |
ISO 11403-1 -2 | |||
95.86 MPa @Strain 5.77 %, Temperature -40.0 °C |
13900 psi @Strain 5.77 %, Temperature -40.0 °F |
ISO 11403-1 -2 | |||
Tensile Strength, Yield | 58.0 MPa | 8410 psi | ISO 527-1/-2 | ||
Elongation at Break | >= 50 % | >= 50 % | Nominal; ISO 527-1/-2 | ||
Elongation at Yield | 5.0 % | 5.0 % | ISO 527-1/-2 | ||
Tensile Modulus | 2.60 GPa | 377 ksi | ISO 527-1/-2 | ||
0.251 GPa @Temperature 120 °C |
36.4 ksi @Temperature 248 °F |
ISO 11403-1 -2 | |||
1.162 GPa @Temperature 40.0 °C |
168.5 ksi @Temperature 104 °F |
ISO 11403-1 -2 | |||
3.024 GPa @Temperature -40.0 °C |
438.6 ksi @Temperature -40.0 °F |
ISO 11403-1 -2 | |||
Flexural Modulus | 2.40 GPa | 348 ksi | ISO 178 | ||
Shear Strength | 0.006261 MPa @Shear Rate 10.0 1/s, Temperature 260 °C |
0.9081 psi @Shear Rate 10.0 1/s, Temperature 500 °F |
ISO 11403-1 -2 | ||
0.009189 MPa @Shear Rate 10.0 1/s, Temperature 250 °C |
1.333 psi @Shear Rate 10.0 1/s, Temperature 482 °F |
ISO 11403-1 -2 | |||
0.013929 MPa @Shear Rate 10.0 1/s, Temperature 240 °C |
2.0202 psi @Shear Rate 10.0 1/s, Temperature 464 °F |
ISO 11403-1 -2 | |||
0.1982 MPa @Shear Rate 500 1/s, Temperature 260 °C |
28.74 psi @Shear Rate 500 1/s, Temperature 500 °F |
ISO 11403-1 -2 | |||
0.2530 MPa @Shear Rate 500 1/s, Temperature 250 °C |
36.69 psi @Shear Rate 500 1/s, Temperature 482 °F |
ISO 11403-1 -2 | |||
0.3209 MPa @Shear Rate 500 1/s, Temperature 240 °C |
46.55 psi @Shear Rate 500 1/s, Temperature 464 °F |
ISO 11403-1 -2 | |||
0.6165 MPa @Shear Rate 5000 1/s, Temperature 260 °C |
89.42 psi @Shear Rate 5000 1/s, Temperature 500 °F |
ISO 11403-1 -2 | |||
0.7110 MPa @Shear Rate 5000 1/s, Temperature 250 °C |
103.1 psi @Shear Rate 5000 1/s, Temperature 482 °F |
ISO 11403-1 -2 | |||
0.8248 MPa @Shear Rate 5000 1/s, Temperature 240 °C |
119.6 psi @Shear Rate 5000 1/s, Temperature 464 °F |
ISO 11403-1 -2 | |||
Secant Modulus | 0.43495 GPa @Strain 7.01 %, Temperature 40.0 °C |
63.085 ksi @Strain 7.01 %, Temperature 104 °F |
ISO 11403-1 -2 | ||
0.686 GPa @Strain 3.64 %, Temperature 40.0 °C |
99.5 ksi @Strain 3.64 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
1.13 GPa @Strain 1.27 %, Temperature 40.0 °C |
164 ksi @Strain 1.27 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
1.81 GPa @Strain 5.21 %, Temperature -40.0 °C |
262 ksi @Strain 5.21 %, Temperature -40.0 °F |
ISO 11403-1 -2 | |||
1.95 GPa @Strain 3.80 %, Temperature -20.0 °C |
282 ksi @Strain 3.80 %, Temperature -4.00 °F |
ISO 11403-1 -2 | |||
2.08 GPa @Strain 2.17 %, Temperature 23.0 °C |
302 ksi @Strain 2.17 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
2.2825 GPa @Strain 2.40 %, Temperature 0.000 °C |
331.05 ksi @Strain 2.40 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
2.37 GPa @Strain 0.700 %, Temperature 23.0 °C |
344 ksi @Strain 0.700 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
2.4175 GPa @Strain 3.20 %, Temperature -40.0 °C |
350.63 ksi @Strain 3.20 %, Temperature -40.0 °F |
ISO 11403-1 -2 | |||
2.5695 GPa @Strain 2.00 %, Temperature -20.0 °C |
372.68 ksi @Strain 2.00 %, Temperature -4.00 °F |
ISO 11403-1 -2 | |||
2.62 GPa @Strain 1.04 %, Temperature 0.000 °C |
379 ksi @Strain 1.04 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
2.80 GPa @Strain 0.820 %, Temperature -20.0 °C |
406 ksi @Strain 0.820 %, Temperature -4.00 °F |
ISO 11403-1 -2 | |||
2.86 GPa @Strain 1.69 %, Temperature -40.0 °C |
415 ksi @Strain 1.69 %, Temperature -40.0 °F |
ISO 11403-1 -2 | |||
3.17 GPa @Strain 0.430 %, Temperature -40.0 °C |
460 ksi @Strain 0.430 %, Temperature -40.0 °F |
ISO 11403-1 -2 | |||
Charpy Impact Unnotched | NB | NB | ISO 179/1eU | ||
NB @Temperature -30.0 °C |
NB @Temperature -22.0 °F |
ISO 179/1eU | |||
Charpy Impact, Notched | 0.550 J/cm² | 2.62 ft-lb/in² | ISO 179/1eA | ||
0.400 J/cm² @Temperature -30.0 °C |
1.90 ft-lb/in² @Temperature -22.0 °F |
ISO 179/1eA | |||
Tensile Creep Modulus, 1 hour | 2500 MPa @Time 3600 sec |
363000 psi @Time 1.00 hour |
ISO 899-1 | ||
Tensile Creep Modulus, 1000 hours | 1800 MPa @Time 3.60e+6 sec |
261000 psi @Time 1000 hour |
ISO 899-1 | ||
Electrical Properties | Metric | English | Comments | ||
Volume Resistivity | >= 1.00e+15 ohm-cm | >= 1.00e+15 ohm-cm | IEC 60093 | ||
Surface Resistance | 1.00e+12 ohm | 1.00e+12 ohm | IEC 60093 | ||
Dielectric Strength | 26.0 kV/mm | 660 kV/in | IEC 60243-1 | ||
Comparative Tracking Index | 600 V | 600 V | IEC 60112 | ||
Thermal Properties | Metric | English | Comments | ||
CTE, linear, Parallel to Flow | 130 µm/m-°C | 72.2 µin/in-°F | ISO 11359-1/-2 | ||
CTE, linear, Transverse to Flow | 130 µm/m-°C | 72.2 µin/in-°F | ISO 11359-1/-2 | ||
Specific Heat Capacity | 2.09 J/g-°C | 0.500 BTU/lb-°F | |||
Thermal Conductivity | 0.250 W/m-K | 1.74 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) | 115 °C | 239 °F | ISO 75-1/-2 | ||
Deflection Temperature at 1.8 MPa (264 psi) | 50.0 °C | 122 °F | ISO 75-1/-2 | ||
Vicat Softening Point | 175 °C | 347 °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 0.900 mm |
HB @Thickness 0.0354 in |
IEC 60695-11-10 | |||
Flame Spread | 21 mm/min @Thickness 1.00 mm |
0.83 in/min @Thickness 0.0394 in |
ISO 3795 (FMVSS 302) | ||
Oxygen Index | 22 % | 22 % | ISO 4589-1/-2 | ||
De |
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Delivery form | Pellets | ||||
Part Marking Code | >PBT< | ISO 11469 | |||
Processing | Coatable | ||||
Injection Moulding | |||||
Other Extrusion | |||||
Profile Extrusion | |||||
Sheet Extrusion | |||||
Regional Availability | Europe | ||||
Near East/Africa | |||||
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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