PFA/PFA 445HP/The Chemours Company 物性表
PFA/PFA 445HP/The Chemours Company
规格用途
| 该料用途 | 衬里; 管件; 液体处理 |
| 备注说明 | For inventory control purposes product name may be followed by an X.Products labeled PFA 445HP and PFA 445HP X are equivalent and all information in this document is applicable to both.Typical ApplicationApplications for DuPont™ Teflon ® PFA 445HP include tubing, unsupported pipe linings for the production of ultra-pure chemicals, semiconductor components, and fluid handling components for high-performance chemical delivery systems where purity in the parts-per-billion range is needed.DescriptionDuPont™ Teflon ® PFA 445HP is a special purpose fluoroplastic resin available in pellet form. This resin is a chemically modified form of Teflon ® PFA 345 that combines many of the benefits of the parent resin (excellent resistance to environmental stress-cracking with a typical MIT folding endurance of 50,000*) with several additional benefits including enhanced purity, improved thermal stability while processing, and chemical inertness; for example, to ozonated fluids. Table 1 shows the typical property data for Teflon ® PFA 445HP.Teflon ® PFA 445HP is a premium resin with the lowest level of extractables designed to meet ultra-high purity requirements. Teflon ® PFA 445HP has a medium-range melt flow rate (typical MFR of 5), and the highest level of inertness due to stable end group polymer structure. The enhanced purity of Teflon ® PFA 445HP makes it suitable for applications that require improved color, lower extractable fluorides, and freedom from other foreign materials. This product contains no additives and is designed for hostile chemical environments where purity in the parts-per-billion range is needed. Examples are in semiconductor manufacture, fluid handling systems for industry or life sciences, and instrumentation for precise measurements of fluid systems. Compared to other thermoplastics, the high melt strength and thermal stability of Teflon ® PFA 445HP can be used to improve processing rates, combining the processing ease of conventional thermoplastics with many properties similar to those of polytetrafluoroethylene.Properly processed products made from neat Teflon ® PFA 445HP 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 445HP resist ignition and do not promote flame spread. When ignited by flame rom other sources, their contribution of heat is very small and added at a slow rate with very little smoke.Teflon ® PFA 445HP meets the requirements of ASTM D3307, Type III |
技术参数
| 性能项目 | 测试条件 | 测试方法 | 数值/描述 | 单位 | |
| 物理性能 | 密度 / 比重 | ASTM D792 | .솘 | g/cm³ | 熔流率（熔体流动速率） | ASTM D3307, ISO 12086 | 372°C/5.0 kg | .율 | g/10 min | 吸水率 | ASTM D570 | 24 hr | < 율.율율 | % |
| 硬度 | 肖氏硬度 | ASTM D2240, ISO 868 | 邵氏 D | | |
| 热性能 | 熔融温度 | ASTM D4591 | 율 | °C | |
| 可燃性 | UL 阻燃等级 2 | UL 94 | 끈-율 | 极限氧指数 | ASTM D2863, ISO 4589-2 | > | % | Critical Shear Rate | 372°C | 솘.율 | sec^-1 | MIT Folding Endurance | ASTM D2176 | 200.0 µm | .율+ | Cycles |
| 电气性能 | 体积电阻率 | ASTM D257, ISO 1325 | 솘.율+솘뒇 | ohms·cm | 介电强度 | 0.250 mm, 方法A（短时间） | ASTM D149 | 뒇율 | kV/mm | 0.250 mm | IEC 60243-1 | 뒇율 | kV/mm | 介电常数 | ASTM D150, IEC 60250 | 1 MHz | .율 | 耗散因数 | ASTM D150, IEC 60250 | 1 MHz | < .율- |
| 机械性能 | 抗张强度 | ASTM D3307, ISO 12086 | 23°C | 퐂.율 | MPa | 250°C | 솘율.율 | MPa | 伸长率 | ASTM D3307, ISO 12086 | 断裂, 23°C | 율 | % | 断裂, 250°C | 뒇율 | % | 弯曲模量 | ASTM D790, ISO 178 | 23°C | 솘 | MPa | 250°C | .율 | MPa |
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