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Teflon® PFA 940 HP Plus
全氟烷氧基
DuPont Fluoropolymers

产品说明

DuPont™ Teflon® PFA HP Plus fluoropolymer is a special purpose resin available in clear, 2.5-mm (0.1 in) pellets. This resin is similar to PFA HP with the additional benefits of improved flex life and chemical stress crack resistance. Teflon® PFA HP Plus meets the increasingly stringent requirements for ultra-reliable and non-contaminating parts, while retaining the same exceptional chemical resistance, high purity and protection against ionic contamination as PFA HP. The improved flex life and chemical resistance will reduce the cost of ownership of high purity fluid handling systems by reducing downtime caused by mechanical or chemical stresses. Parts molded with Teflon® PFA HP Plus have improved clarity and a smooth finish, which can further help prevent buildup of microbial contamination in water handling systems.

The exceptional purity of Teflon® PFA HP Plus makes it suitable for applications that require low 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. An example is in fluid handling systems for the manufacture of semiconductors. Teflon® PFA HP Plus is preferred when extended service is required in hostile environments involving chemical, thermal, and mechanical stress.

The excellent thermal stability of Teflon® PFA HP Plus results in better moldings and reduces metal pickup from processing equipment. Teflon® PFA HP Plus combines the processing ease of conventional thermoplastics with the properties similar to those of polytetrafluoroethylene.

Properly processed products made from Teflon® PFA HP Plus resin provide the superior properties typical of fluoropolymer resins; retention of properties after service at 250°C (482°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 HP Plus resist ignition and do not themselves promote flame spread. When ignited by flame from other sources, their contribution to 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 • 延展性，高 
性能特点 • 高 ESCR（抗应力裂纹） • 热稳定性，良好  
 • 抗溶解性 • 烟释放，低  
用途 • 衬里 • 管道 • 零件装置 
 • 阀门/阀门部件 • 管道系统  
    
外观 • 清晰/透明   
形式 • 颗粒料   
加工方法 • 吹塑成型 • 挤出 • 压缩模塑 
 • 管路挤压成型 • 树脂传递成型 • 注射成型 
    
    
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)  17g/10 min ASTM D1238 
吸水率 (24 hr)  0.050% 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  28.3MPa  
200°C  11.0MPa  
伸长率   ASTM D638 
断裂, 23°C  310%  
断裂, 200°C  450%  
弯曲模量   ASTM D790 
23°C  648MPa  
200°C  60.0MPa  
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  285 到 300°C  
线形膨胀系数 - 流动   ASTM D696 
0 到 100°C  0.00015cm/cm/°C  
100 到 150°C  0.00023cm/cm/°C  
150 到 200°C  0.00029cm/cm/°C  
    
  
   
   
  
   
 
Teflon® PFA 940 HP Plus  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
体积电阻率 1.0E+18ohm•cm ASTM D257
介电强度 2 (0.254 mm) 79kV/mm ASTM D149
介电常数  ASTM D150
100 Hz 2.05 
10 MHz 2.05 
耗散因数  ASTM D150
100 Hz 0.00030 
10 MHz 0.00030 
可燃性 额定值单位制 测试方法
极限氧指数 95% ASTM D2863