PFA 445 HP, 高 ESCR（抗应力裂纹）, 抗溶解性, 吹塑成型

PFA 445 HP, 高 ESCR（抗应力裂纹）, 抗溶解性, 吹塑成型 Teflon® PFA 445 HP 全氟烷氧基 DuPont Fluoropolymers 产品说明 Teflon® PFA 445 HP is a special-purpose resin available in clear, 2.5-mm (0.1-in.) pellets. This resin is a chemically modified form of Teflon® PFA 345 that combines many of the benefits of the parent resin with several new ones. Like Teflon® PFA 345, it offers great flex life and resistance to environmental stress cracking. The additional benefits are enhanced purity and improved thermal stability while processing. The enhanced purity of Teflon® PFA 445 HP 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 of precise measurements of fluid systems. The improved thermal stability of Teflon® PFA 445 HP results in reduced amounts of bubbles in final parts and decreased corrosion of processing equipment. This resin can be processed at higher temperatures and higher rates than Teflon® PFA 345. Teflon® PFA 445 HP combines the processing ease of conventional thermoplastics with properties similar to those of polytetrafluoroethylene. Properly processed products made from neat Teflon® PFA 445 HP resin provide the superior properties typical of the fluoropolymer resins: retention of physical properties after service at 260°C (500°F), useful properties at -196°C (-320°F), and chemical inertness to nearly all industrial chemicals and solvents. Dielectric properties are excellent. Molded products have moderate stiffness and high ultimate elongation. In a flame situation, products of Teflon® PFA 445 HP resist ignition and do not themselves promote flame spread. When ignited by flame from other sources, the contribution of heat is very small and added at a slow rate with very little smoke. 总体材料状态 • 已商用：当前有效供货地区 • 北美洲 • 欧洲 • 南美洲 • 亚太地区 • 刚性，良好 • 耐化学性良好 • 烟释放，低性能特点 • 高 ESCR（抗应力裂纹） • 耐气候影响性能良好 • 延展性，高 • 抗溶解性 • 热稳定性，良好用途 • 衬里 • 管道外观 • 清晰/透明形式 • 颗粒料加工方法 • 吹塑成型 • 树脂传递成型 • 注射成型 • 挤出 • 压缩模塑物理性能额定值单位制测试方法比重 2.14g/cm³ ASTM D792 熔流率 (372°C/5.0 kg) 5.0g/10 min ASTM D1238 吸水率 (24 hr) 0.010% ASTM D570 机械性能额定值单位制测试方法抗张强度 ASTM D638 屈服, 23°C 13.8MPa 23°C 26.2MPa 250°C 9.65MPa 伸长率 ASTM D638 断裂, 23°C 320% 断裂, 250°C 480% 弯曲模量 ASTM D790 23°C 552MPa 250°C 55.2MPa 硬度额定值单位制测试方法硬度计硬度 (邵氏 D) 55 ASTM D2240 热性能额定值单位制测试方法熔融温度 302 到 310°C 线形膨胀系数 - 流动 (20 到 100°C) 0.00013cm/cm/°C ASTM D696 电气性能额定值单位制测试方法体积电阻率 1.0E+16ohm•cm ASTM D257 介电强度 51kV/mm ASTM D149 1 / 2 Teflon® PFA 445 HP 2012年9月30日全氟烷氧基 DuPont Fluoropolymers 电气性能额定值单位制测试方法介电常数 ASTM D150 60 Hz 2.10 1 MHz 2.10 耗散因数 ASTM D150 60 Hz 0.00010 1 MHz 0.00010 可燃性额定值单位制测试方法极限氧指数 95% ASTM D2863