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Tefzel 280
乙烯四氟乙烯共聚物
DuPont Fluoropolymers

產品說明

DuPont™ Tefzel® 280 fluoropolymer is a premium resin available in translucent, 2.5-mm (0.1-in) pellets. Compared with other grades of Tefzel®, its most unique features are a relatively low flow rate, a greatly enhanced flex life, and resistance to environmental stress.

Tefzel® 280 and the other Tefzel® fluoropolymers are melt processible, modified copolymers of ethylene and tetrafluoroethylene. They are highperformance resins that can be processed at relatively high rates compared with fluorocarbon resins. They are mechanically tough and offer an excellent balance of properties.

Tefzel® 280 is preferred for applications where other thermoplastics are lacking in mechanical toughness, broad thermal capability, ability to meet unusual thermal, mechanical, and chemical environmental extremes, or limited by fabricating problems. Examples are components and linings for the chemical industry and molded parts with metal inserts of thick sections for use at high temperatures.

Properly processed products made from neat Tefzel® 280 are inert to most solvents and chemicals, hydrolytically stable, and weather resistant. Recommended upper service temperature is 150°C (302°F); useful properties are retained at cryogenic ranges. The level and stability of dielectric properties are excellent and the UL94 method flame rating is V-0. They are resistant to environmental stress cracking and have outstanding impact strength, cut-through and abrasion resistance. High-energy radiation resistance meets IEEE 383 and the resin is approved for nuclear power plant use.

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 • 已商用：當前有效   
供貨地區 • 北美洲 • 歐洲  
 • 南美洲 • 亞太地區  
    
 • 高 ESCR（抗應力裂紋） • 流動性低 • 耐熱性，高 
性能特點 • 抗輻射性 • 耐化學性良好  
 • 抗溶解性 • 耐磨蝕性，良好 • 水解穩定 
    
 • 抗撞擊性，良好 • 耐氣候影響性能良好  
 • Abrasion Resistant Liners • 電氣/電子應用領域 • 核能應用 
用途 • 泵件 • 電器導線絕緣材料 • 緊固件 
 • 薄膜 • 閥門/閥門部件 • 零件裝置 
    
 • 襯里 • 管道 • 型號 
機構評級 • IEEE 383   
外觀 • 半透明   
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  1.70g/cm³ ASTM D792 
熔流率 (297°C/5.0 kg)  4.0g/10 min ASTM D1238 
吸水率 (24 hr)  0.0070% ASTM D570 
機械性能  額定值單位制 測試方法 
抗張強度 (23°C)  46.2MPa ASTM D638 
伸長率 (斷裂, 23°C)  300% ASTM D638 
彎曲模量 (23°C)  1170MPa ASTM D790 
壓縮強度  37.9MPa ASTM D695 
沖擊性能  額定值單位制 測試方法 
懸壁梁缺口沖擊強度 (23°C)  無斷裂 ASTM D256 
硬度  額定值單位制 測試方法 
硬度計硬度 (邵氏 D)  72 ASTM D2240 
熱性能  額定值單位制 測試方法 
熔融溫度  255 到 280°C  
線形膨脹系數 - 流動 (0 到 100°C)  0.00013cm/cm/°C ASTM D696 
電氣性能  額定值單位制 測試方法 
體積電阻率  1.0E+17ohm•cm ASTM D257 
介電強度 (0.254 mm)  71kV/mm ASTM D149 
介電常數 (23°C, 1 MHz)  2.55 ASTM D150 
耗散因數 (23°C, 1 MHz)  0.0072 ASTM D150 
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Tefzel 280  2012年9月30日
乙烯四氟乙烯共聚物  
DuPont Fluoropolymers  
電氣性能 額定值單位制 測試方法
耐電弧性 122sec ASTM D495
可燃性 額定值單位制 測試方法
極限氧指數 31% ASTM D2863
補充信息  
Limiting Oxygen Index, ASTM D2863: 30 to 32%  
Dielectric Constant, ASTM D1531, 1 MHz, 73°F: 2.5 to 2.6