PFA 350价格

 

Teflon® PFA 350
全氟烷氧基
DuPont Fluoropolymers

产品说明

DuPont™ Teflon® PFA 350 is a general-purpose resin available in clear, 2.5-mm (0.1-in.) pellets. Compared with other grades of Teflon® PFA, its most unique features are a relatively low flow rate, greatly increased flex life, and enhanced resistance to environmental stress cracking.

Teflon® PFA 350 and the other Teflon® PFA (perfluoroalkoxy) fluoropolymer resins combine theprocessing ease of conventional thermoplastics with properties similar to those of polytetrafluoroethylene (PTFE). They have high melt strength, stability at high processing temperatures, and resistance to creep at high service temperature.

Teflon® PFA 350 is preferred when extended service is required in hostile environments involving chemical, thermal, and mechanical stress. For a given process, its high melt strength and thermal stability can be used to improve rates. Compared with other fluoropolymers, its creep resistance at its high service temperatures provides a superior balance and level of end-use properties.

Properly processed products made from neat Teflon® PFA 350 resin provide the superior properties typical of the fluoropolymer resins: retention of properties after service at 260°C (500°F), useful properties at -196°C (-320°F), and chemical inertness to nearly all industrial chemicals and solvents. Dielectric constant and dissipation factor are exceptionally low. Molded products have moderate stiffness and high ultimate elongation.

In a flame situation, products of Teflon® PFA 350 resist ignition and do not themselves promote flame spread. When ignited by flame from other sources, their contribution of heat is small and with very little smoke.

Statements, or data, regarding behavior in a flame situation are not intended to reflect hazards presented by this or any other material when under actual fire conditions.

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 • 流动性低 • 烟释放，低 
性能特点 • 抗溶解性 • 耐化学性良好  
 • 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  
    
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)  2.0g/10 min ASTM D1238 
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  
23°C  28.0MPa  
250°C  14.0MPa  
伸长率   ASTM D638 
断裂, 23°C  300%  
断裂, 250°C  500%  
弯曲模量   ASTM D790 
23°C  625MPa  
250°C  69.0MPa  
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  302 到 310°C  
线形膨胀系数 - 流动   ASTM D696 
21 到 100°C  0.00014cm/cm/°C  
100 到 149°C  0.00018cm/cm/°C  
149 到 209°C  0.00022cm/cm/°C  
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Teflon® PFA 350  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
60 Hz 2.03 
1 MHz 2.03 
耗散因数  ASTM D150
60 Hz 0.00010 
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