PFA 345价格

 

Teflon® PFA 345
全氟烷氧基
DuPont Fluoropolymers

产品说明

Teflon® PFA 345 is a medium-flow-rate resin available in clear 2.5-mm (0.1-in.) pellets. Compared with Teflon® PFA 340, it offers increased flex life and greater resistance to environmental stress cracking.

All grades of Teflon® PFA combine the processing ease of conventional thermoplastics with properties similar to those of Teflon® PTFE fluorocarbon resin. They have high melt strength, stability at high processing temperatures, and resistance to creep at high service temperatures.

Teflon® PFA retains its properties after service at 260°C (500°F) and has useful properties at temperatures as low as -196°C (-320°F). It is inert to nearly all industrial chemicals and solvents, and its dielectric properties are excellent. Products made with Teflon® PFA have moderate stiffness and high elongation.

In a flame situation, products of Teflon® PFA resist ignition and do not themselves promote flame spread. When ignited by flame from other sources, their 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  
 • 拉丁美洲 • 亚太地区  
    
 • 刚性，良好 • 良好的熔体强度 • 烟释放，低 
性能特点 • 高 ESCR（抗应力裂纹） • 流动性中等  
 • 抗溶解性 • 耐化学性良好 • 延展性，高 
    
 • 良好的抗蠕变性 • 耐气候影响性能良好  
用途 • 泵件 • 电线电缆应用 • 管道 
 • 衬里 • 阀门/阀门部件 • 零件装置 
    
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)  6.5g/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  29.0MPa ASTM D638 
伸长率 (断裂)  300% ASTM D638 
弯曲模量  690MPa ASTM D790 
冲击性能  额定值单位制 测试方法 
悬壁梁缺口冲击强度 (23°C)  无断裂 ASTM D256 
硬度  额定值单位制 测试方法 
硬度计硬度 (邵氏 D)  60 ASTM D2240 
热性能  额定值单位制 测试方法 
熔融温度  305°C  
线形膨胀系数 - 流动 (38 到 71°C)  0.00016cm/cm/°C ASTM D696 
导热系数  0.22W/m/K ASTM C177 
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 (0.0250 mm)  80kV/mm ASTM D149 
介电常数   ASTM D150 
60 Hz  2.10  
1.00 GHz  2.10  
耗散因数   ASTM D150 
60 Hz  0.00060  
1.00 GHz  0.00060  
可燃性  额定值单位制 测试方法 
UL 阻燃等级  V-0 UL 94