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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