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出于库存控制目的,产品名称后面可以跟一个X。标记为PFA 345和PFA 345 X的产品是等效的,本文件中的所有信息都适用于这两者。杜邦特氟龙PFA 345的典型应用包括挤压管、电线和电缆绝缘、注塑件以及波纹管、阀门、配件、管道、泵和其他流体处理部件的耐化学性衬里。说明杜邦特氟隆PFA 345是一种中等熔融流速的氟塑料树脂,可采用颗粒形式。与Teflon PFA 340相比,它具有更高的弯曲寿命和更大的抗环境应力开裂能力(Teflon PFA 345具有典型的MIT耐折能力,即50000*1,而Teflon PFA 340具有15000*1)。表1显示了特氟隆PFA 345的典型性能数据。当生产具有氟塑料树脂优良性能的产品需要传统的挤压和成型工艺时,使用特氟隆PFA345。与其他热塑性塑料相比,聚四氟乙烯PFA345具有较高的熔融强度和热稳定性,可以提高加工速度。与其他氟塑料相比,耐高温蠕变性能提供了优越的平衡性和最终使用性能。Teflon PFA 345结合了传统热塑性塑料的易加工性,具有许多类似于聚四氟乙烯的特性。由纯Teflon® PFA 345树脂制成的经过适当处理的产品具有氟塑料树脂的优良性能特征:化学惰性、优异的介电性能、耐热性、韧性和柔韧性、低摩擦系数、不粘特性、可忽略的吸湿性、低可燃性、性能极端温度,良好的耐候性。在火焰情况下,特氟隆PFA 345的产品不着火,不促进火焰蔓延。当被其他来源的火焰点燃时,它们的热量贡献很小,并且以很低的烟以缓慢的速度添加。Teflon PFA 345符合ASTM D3307第三类的要求 For inventory control purposes product name may be followed by an X. Products labeled PFA 345 and PFA 345 X are equivalent and all information in this document is applicable to both. Typical Application Applications for DuPont™ Teflon ® PFA 345 include extruded tubing, wire and cable insulation, injection molded parts, and chemically resistant linings for bellows, valves, fittings, pipes, pumps, and other fluid-handling components. Description DuPont™ Teflon ® PFA 345 is a medium melt flow rate fluoroplastic resin available in pellet form. Compared with Teflon ® PFA 340, it offers increased flex life and greater resistance to environmental stress-cracking (Teflon ® PFA 345 offers a typical MIT folding endurance of 50,000* compared to 15,000 in Teflon ® PFA 340). Table 1 shows the typical property data for Teflon ® PFA 345. Teflon ® PFA 345 is used when traditional extrusion and molding processes are required for producing products with the superior properties of a fluoroplastic resin. Compared to other thermoplastics, the high melt strength and thermal stability of Teflon ® PFA 345 can be used to improve processing rates. Compared with other fluoroplastics, creep resistance at high service temperatures provides a superior balance and level of end-use properties. Teflon ® PFA 345 combines the processing ease of conventional thermoplastics with many properties similar to those of polytetrafluoroethylene. Properly processed products made from neat Teflon® PFA 345 resin provide the superior properties characteristic of fluoroplastic resins: chemical inertness, exceptional dielectric properties, heat resistance, toughness and flexibility, low coefficient of friction, non-stick characteristics, negligible moisture absorption, low flammability, performance at temperature extremes, and excellent weather resistance. In a flame situation, products of Teflon ® PFA 345 resist ignition and do not promote flame spread. When ignited by flame from other sources, their contribution of heat is very small and added at a slow rate with very little smoke. Teflon ® PFA 345 meets the requirements of ASTM D3307, Type III |
技术参数 Technical Data | |||
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物理性能 PHYSICAL |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
密度 Density |
2.14 | g/cm³ | ASTM D792 |
熔体质量流动速率 Melt Flow Rate |
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372℃,5.0kg 372℃,5.0kg |
5.0 | g/10min | ASTM D3307,ISO 12086 |
吸水率 Water absorption rate |
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24hr 24hr |
< 0.030 | % | ASTM D570 |
热性能 THERMAL |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
熔融温度 Melting temperature |
305 | ℃ | ASTM D4591 |
电气性能 Electrical performance |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
体积电阻率 Volume resistivity |
1.0E+18 | ohms·cm | ASTM D257,ISO 1325 |
介电强度 Dielectric strength |
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0.25 mm 0.25 mm 2 |
kV/mm | ASTM D149 | |
0.25 mm 0.25 mm |
kV/mm | IEC 60243-1 | |
介电常数 Dielectric constant |
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1 MHz 1 MHz |
ASTM D150 , IEC 60250 | ||
耗散因数 Dissipation factor |
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1 MHz 1 MHz |
ASTM D150 , IEC 60250 | ||
阻燃性能 FLAME CHARACTERISTICS |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
阻燃等级 Flame retardant level 3 |
UL 94 | ||
极限氧指数 Extreme oxygen index |
% | ASTM D2863,ISO 4589-2 | |
补充信息 Supplementary information |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
Critical Shear Rate(372℃) Critical Shear Rate(372℃) |
sec^-1 | ||
MIT耐折强度(200.0 µm) MIT flexural strength (200.0 µ m) 4 |
Cycles | ASTM D2176 | |
机械性能 MECHANICAL |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
邵氏硬度 Shore hardness |
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邵氏 D Shaw's D |
ASTM D2240 , ISO 868 | ||
拉伸强度 tensile strength |
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23℃ 23℃ |
MPa | ASTM D3307 , ISO 12086 | |
拉伸应变 Tensile strain |
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断裂,23℃ Fracture, 23 ℃ |
% | ASTM D3307 , ISO 12086 | |
弯曲模量 Bending modulus |
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23℃ 23℃ |
MPa | ASTM D790 , ISO 178 |
备注 |
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1 一般属性:这些不能被视为规格。 |
2 方法A(短时间) |
3 These results are based on laboratory tests under controlled conditions and do not reflect performance under actual fire conditions, current rating is a typical theoretical value. |
4 Depending on fabrication conditions |
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