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PFA 350T,高 ESCR（抗應力裂紋）, 流動性低, 抗溶解性 Teflon® PFA 350T 全氟烷氧基 DuPont Fluoropolymers 產品說明 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. 總體材料狀態 • 已商用：當前有效供貨地區 • 北美洲 • 歐洲 • 南美洲 • 亞太地區 • 剛性，良好 • 良好的著色性 • 脫模性能良好 • 高 ESCR（抗應力裂紋） • 流動性低性能特點 • 抗溶解性 • 耐化學性良好 • 煙釋放，低 • 良好的抗蠕變性 • 耐氣候影響性能良好 • 延展性，高 • 良好的熔體強度 • 熱穩定性，良好用途 • 襯里 • 管道 • 零件裝置 • 閥門/閥門部件 • 管道機構評級 • ASTM D 3307 Type II 外觀 • 清晰/透明形式 • 顆粒料加工方法 • 吹塑成型 • 樹脂傳遞成型 • 注射成型 • 擠出 • 壓縮模塑物理性能額定值單位制測試方法比重 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 機械性能額定值單位制測試方法抗張強度 ASTM D638 屈服, 23°C 15.2MPa ISO 527-2 斷裂, 23°C 28.0MPa 斷裂, 250°C 14.0MPa 伸長率 ASTM D638 斷裂, 23°C 300% ISO 527-2 斷裂, 250°C 500% 彎曲模量 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 硬度額定值單位制測試方法硬度計硬度 (邵氏 D) 55 ASTM D2240 ISO 868 熱性能額定值單位制測試方法最高連續使用溫度 260°C 熔融峰值溫度 302 到 310°C ASTM D4591 ASTM D3418 線形膨脹系數 - 流動 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 電氣性能額定值單位制測試方法體積電阻率 > 1.0E+16ohm•cm ASTM D257 IEC 60093 介電強度 0.250 mm 2 > 80kV/mm ASTM D149 0.250 mm 3 > 80kV/mm IEC 60243-1 相對電容率 60 Hz 2.03 ASTM D150 IEC 60250 1 MHz 2.03 IEC 60250 ASTM D150 耗散因數 ASTM D150 60 Hz 0.00010 IEC 60250 1 MHz 0.00010 可燃性額定值單位制測試方法極限氧指數 > 95% ASTM D2863 ISO 4589-2 補充信息額定值單位制測試方法 MIT Folding Endurance (180.0 到 200.0 µm) 2.0E+5Cycles ASTM D2176 注射額定值單位制螺桿長徑比 24.0:1.0

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