PFA 350T,高 ESCR（抗应力裂纹）, 流动性低, 抗溶解性

PFA 350T,高 ESCR（抗应力裂纹）, 流动性低, 抗溶解性 Teflon® PFA 350T 全氟烷氧基 DuPont Fluoropolymers 产品说明 Applications for Teflon ® PFA 350 T include extruded tubing or hose for handling aggressive fluids at high pressures; chemical linings for pipes, valves and fittings used in the chemical processing industries; film for high flex service; traditional extruded or moulded articles requiring the unique performance of Teflon ® PFA 350 T. Teflon ® PFA 350 T is a premium resin available in clear 2,5 mm pellets. This resin is a chemically modified form of Teflon ® PFA 350 that combines many of the benefits of the parent resin with several new ones. The additional benefits are improved colour, improved thermal stability and better mould release characteristics. Similar to Teflon ® PFA 350, this resin has a relatively low melt flow rate, high flex life and enhanced resistance to environmental stress cracking, compared to most other grades of Teflon ® PFA. These additional benefits make PFA 350 T an ideal resin in applications like transfer moulding where the resin is exposed to high temperatures and long hold-up times. Teflon ® PFA 350 T, like its parent resin PFA 350, is preferred when extended service is required in hostile environments involving chemical, thermal and mechanical stress. Compared to other fluoropolymers, its creep resistance at high service temperature provides a superior balance and level of end use properties. Properly processed products made from virgin Teflon ® PFA 350 T resin provides the superior properties typical of the fluoropolymer resins: retention of physical properties after service at 260°C, useful properties at -196°C and chemical inertness to nearly all industrial chemicals and solvents. Dielectric properties are excellent. Moulded products have moderate stiffness and high ultimate elongation. In a flame situation, products made of Teflon ® PFA 350 T resist ignition and do not themselves pro- mote 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. Teflon ® PFA 350 T meets the requirements of ASTM D 3307, type II. 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 • 良好的着色性 • 脱模性能良好 • 高 ESCR（抗应力裂纹） • 流动性低性能特点 • 抗溶解性 • 耐化学性良好 • 烟释放，低 • 良好的抗蠕变性 • 耐气候影响性能良好 • 延展性，高 • 良好的熔体强度 • 热稳定性，良好用途 • 衬里 • 管道 • 零件装置 • 阀门/阀门部件 • 管道机构评级 • ASTM D 3307 Type II 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 2.12 到 2.17g/cm³ ASTM D792 ISO 1183 熔流率 (372°C/5.0 kg) 2.0g/10 min ASTM D1238 ISO 1133 吸水率 (24 hr) < 0.030% 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 15.2MPa ISO 527-2 断裂, 23°C 28.0MPa 断裂, 250°C 14.0MPa 伸长率 ASTM D638 断裂, 23°C 300% ISO 527-2 断裂, 250°C 500% 弯曲模量 ASTM D790 23°C 625MPa ISO 178 250°C 69.0MPa 1 / 2 Teflon® PFA 350T 2012年9月30日全氟烷氧基 DuPont Fluoropolymers 硬度额定值单位制测试方法硬度计硬度 (邵氏 D) 55 ASTM D2240 ISO 868 热性能额定值单位制测试方法最高连续使用温度 260°C 熔融峰值温度 302 到 310°C ASTM D4591 ASTM D3418 线形膨胀系数 - 流动 ASTM D696 21 到 100°C 0.00014cm/cm/°C 100 到 150°C 0.00018cm/cm/°C 150 到 208°C 0.00022cm/cm/°C 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 IEC 60093 介电强度 0.250 mm 2 > 80kV/mm ASTM D149 0.250 mm 3 > 80kV/mm IEC 60243-1 相对电容率 60 Hz 2.03 ASTM D150 IEC 60250 1 MHz 2.03 IEC 60250 ASTM D150 耗散因数 ASTM D150 60 Hz 0.00010 IEC 60250 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 ISO 4589-2 补充信息额定值单位制测试方法 MIT Folding Endurance (180.0 到 200.0 µm) 2.0E+5Cycles ASTM D2176 注射额定值单位制螺杆长径比 24.0:1.0