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Physical Properties | Metric | English | Comments | ||
---|---|---|---|---|---|
Density | 1.11 g/cc | 0.0401 lb/in³ | |||
1.31 g/cc | 0.0473 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 | 92000 cP @Shear Rate 5000 1/s, Temperature 260 °C |
92000 cP @Shear Rate 5000 1/s, Temperature 500 °F |
ISO 11403-1 -2 | ||
105000 cP @Shear Rate 5000 1/s, Temperature 250 °C |
105000 cP @Shear Rate 5000 1/s, Temperature 482 °F |
ISO 11403-1 -2 | |||
121000 cP @Shear Rate 5000 1/s, Temperature 240 °C |
121000 cP @Shear Rate 5000 1/s, Temperature 464 °F |
ISO 11403-1 -2 | |||
207000 cP @Shear Rate 500 1/s, Temperature 260 °C |
207000 cP @Shear Rate 500 1/s, Temperature 500 °F |
ISO 11403-1 -2 | |||
244000 cP @Shear Rate 500 1/s, Temperature 250 °C |
244000 cP @Shear Rate 500 1/s, Temperature 482 °F |
ISO 11403-1 -2 | |||
289000 cP @Shear Rate 500 1/s, Temperature 240 °C |
289000 cP @Shear Rate 500 1/s, Temperature 464 °F |
ISO 11403-1 -2 | |||
Viscosity Test | 130 cm³/g | 130 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 | 0.016 cm/cm | 0.016 in/in | ISO 294-4 2577 | ||
Melt Flow | 19.1 g/10 min @Load 2.16 kg, Temperature 250 °C |
19.1 g/10 min @Load 4.76 lb, Temperature 482 °F |
ISO 1133 | ||
Mechanical Properties | Metric | English | Comments | ||
Tensile Stress | 8.62 MPa @Strain 0.320 %, Temperature 23.0 °C |
1250 psi @Strain 0.320 %, Temperature 73.4 °F |
ISO 11403-1 -2 | ||
10.61 MPa @Strain 2.43 %, Temperature 90.0 °C |
1539 psi @Strain 2.43 %, Temperature 194 °F |
ISO 11403-1 -2 | |||
20.07 MPa @Strain 1.69 %, Temperature 40.0 °C |
2911 psi @Strain 1.69 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
22.69 MPa @Strain 9.30 %, Temperature 90.0 °C |
3291 psi @Strain 9.30 %, Temperature 194 °F |
ISO 11403-1 -2 | |||
25.75 MPa @Strain 15.89 %, Temperature 90.0 °C |
3735 psi @Strain 15.89 %, Temperature 194 °F |
ISO 11403-1 -2 | |||
26.61 MPa @Strain 22.76 %, Temperature 90.0 °C |
3859 psi @Strain 22.76 %, Temperature 194 °F |
ISO 11403-1 -2 | |||
36.67 MPa @Strain 6.70 %, Temperature 40.0 °C |
5319 psi @Strain 6.70 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
39.4 MPa @Strain 1.59 %, Temperature 23.0 °C |
5710 psi @Strain 1.59 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
41.23 MPa @Strain 11.68 %, Temperature 40.0 °C |
5980 psi @Strain 11.68 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
42.19 MPa @Strain 16.69 %, Temperature 40.0 °C |
6119 psi @Strain 16.69 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
53.5 MPa @Strain 2.50 %, Temperature 23.0 °C |
7760 psi @Strain 2.50 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
Tensile Strength, Yield | 59.0 MPa | 8560 psi | ISO 527-1/-2 | ||
Elongation at Break | 30 % | 30 % | Nominal; ISO 527-1/-2 | ||
Elongation at Yield | 8.0 % | 8.0 % | ISO 527-1/-2 | ||
Tensile Modulus | 2.60 GPa | 377 ksi | ISO 527-1/-2 | ||
Flexural Strength | 88.0 MPa | 12800 psi | ISO 178 | ||
Shear Modulus | 0.0640 GPa @Temperature 160 °C |
9.28 ksi @Temperature 320 °F |
Dynamic; ISO 11403-1 -2 | ||
0.0900 GPa @Temperature 120 °C |
13.1 ksi @Temperature 248 °F |
Dynamic; ISO 11403-1 -2 | |||
0.187 GPa @Temperature 70.0 °C |
27.1 ksi @Temperature 158 °F |
Dynamic; ISO 11403-1 -2 | |||
0.869 GPa @Temperature 20.0 °C |
126 ksi @Temperature 68.0 °F |
Dynamic; ISO 11403-1 -2 | |||
0.959 GPa @Temperature -20.0 °C |
139 ksi @Temperature -4.00 °F |
Dynamic; ISO 11403-1 -2 | |||
1.07 GPa @Temperature -50.0 °C |
155 ksi @Temperature -58.0 °F |
Dynamic; ISO 11403-1 -2 | |||
Secant Modulus | 0.313 GPa @Strain 13.35 %, Temperature 40.0 °C |
45.4 ksi @Strain 13.35 %, Temperature 104 °F |
ISO 11403-1 -2 | ||
0.547 GPa @Strain 6.70 %, Temperature 40.0 °C |
79.4 ksi @Strain 6.70 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
1.19 GPa @Strain 1.69 %, Temperature 40.0 °C |
172 ksi @Strain 1.69 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
1.93 GPa @Strain 2.86 %, Temperature 23.0 °C |
279 ksi @Strain 2.86 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
2.48 GPa @Strain 1.59 %, Temperature 23.0 °C |
359 ksi @Strain 1.59 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
2.69 GPa @Strain 0.320 %, Temperature 23.0 °C |
391 ksi @Strain 0.320 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
Izod Impact, Notched (ISO) | 4.00 kJ/m² | 1.90 ft-lb/in² | ISO 180/1A | ||
5.00 kJ/m² @Temperature -30.0 °C |
2.38 ft-lb/in² @Temperature -22.0 °F |
ISO 180/1A | |||
Izod Impact, Unnotched (ISO) | 142 kJ/m² | 67.6 ft-lb/in² | ISO 180/1U | ||
70.0 kJ/m² @Temperature -30.0 °C |
33.3 ft-lb/in² @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 | 0.450 J/cm² | 2.14 ft-lb/in² | ISO 179/1eA | ||
0.350 J/cm² @Temperature -30.0 °C |
1.67 ft-lb/in² @Temperature -22.0 °F |
ISO 179/1eA | |||
Tensile Creep Modulus, 1 hour | 2600 MPa @Time 3600 sec |
377000 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 | ||
Dielectric Constant | 3.2 @Frequency 1.00e+6 Hz |
3.2 @Frequency 1.00e+6 Hz |
IEC 60250 | ||
3.8 @Frequency 100 Hz |
3.8 @Frequency 100 Hz |
IEC 60250 | |||
Dielectric Strength | 26.0 kV/mm | 660 kV/in | IEC 60243-1 | ||
Dissipation Factor | 0.0020 @Frequency 100 Hz |
0.0020 @Frequency 100 Hz |
IEC 60250 | ||
0.020 @Frequency 1.00e+6 Hz |
0.020 @Frequency 1.00e+6 Hz |
IEC 60250 | |||
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 | 2.10 J/g-°C | 0.502 BTU/lb-°F | |||
Thermal Conductivity | 0.210 W/m-K | 1.46 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) | 145 °C | 293 °F | ISO 75-1/-2 | ||
180 °C | 356 °F | annealed; ISO 75-1/-2 | |||
Deflection Temperature at 1.8 MPa (264 psi) | 60.0 °C | 140 °F | ISO 75-1/-2 | ||
60.0 °C | 140 °F | annealed; 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 0.800 mm |
HB @Thickness 0.0315 in |
IEC 60695-11-10 | |||
Oxygen Index | 22 % | 22 % | ISO 4589-1/-2 | ||
De |
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Additives | Release agent | ||||
Delivery form | Pellets | ||||
Part Marking Code | >PBT< | ISO 11469 | |||
Processing | Injection Moulding | ||||
Regional Availability | Asia Pacific | ||||
Europe | |||||
Global | |||||
Near East/Africa | |||||
North America | |||||
South and Central America | |||||
Resin Identification | PBT | ||||
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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