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Teflon® PFA 350
全氟烷氧基
DuPont Fluoropolymers

產(chǎn)品說明

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.

總體

材料狀態(tài) • 已商用：當(dāng)前有效   
供貨地區(qū) • 北美洲 • 歐洲  
 • 南美洲 • 亞太地區(qū)  
    
 • 剛性，良好 • 流動性低 • 煙釋放，低 
性能特點(diǎn) • 抗溶解性 • 耐化學(xué)性良好  
 • 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(qiáng)度 • 熱穩(wěn)定性，良好  
用途 • 襯里 • 管道 • 零件裝置 
 • 閥門/閥門部件 • 管道  
    
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  2.14g/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 
機(jī)械性能  額定值單位制 測試方法 
抗張強(qiáng)度   ASTM D638 
屈服, 23°C  15.2MPa  
23°C  28.0MPa  
250°C  14.0MPa  
伸長率   ASTM D638 
斷裂, 23°C  300%  
斷裂, 250°C  500%  
彎曲模量   ASTM D790 
23°C  625MPa  
250°C  69.0MPa  
硬度  額定值單位制 測試方法 
硬度計(jì)硬度 (邵氏 D)  55 ASTM D2240 
熱性能  額定值單位制 測試方法 
熔融溫度  302 到 310°C  
線形膨脹系數(shù) - 流動   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  
電氣性能 額定值單位制 測試方法
體積電阻率 1.0E+18ohm•cm ASTM D257
介電強(qiáng)度 2 (0.254 mm) 79kV/mm ASTM D149
介電常數(shù)  ASTM D150
60 Hz 2.03 
1 MHz 2.03 
耗散因數(shù)  ASTM D150
60 Hz 0.00010 
1 MHz 0.00010 
可燃性 額定值單位制 測試方法
極限氧指數(shù) 95% ASTM D2863