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Tefzel 207
乙烯四氟乙烯共聚物
DuPont Fluoropolymers

產(chǎn)品說(shuō)明

DuPont™ Tefzel 207 fluoropolymer is a special-purpose resin available in translucent, 2.5 mm (0.1 in) pellets. Compared with other grades of Tefzel ®, it has a higher flow rate but still maintains a service temperature of 150°C (302°F).

Tefzel ® 207 and the other Tefzel ® fluoropolymers are melt processible, modified copolymers of ethylene and tetrafluoroethylene. They are high-performance resins that can be processed at relatively high rates compared with fluorocarbon resins. They are mechanically tough and offer an excellent balance of properties.

The relatively high flow rate of Tefzel ® 207 makes it uniquely suitable for high-speed processing, especially for extruded coatings and injection molding of slender, thin-walled or intricate shapes. Properly processed products made from neat Tefzel ® 207 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 flame rating is V-0 by the UL94 method. Mechanical properties include outstanding impact strength, cut-through, and abrasion resistance.

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)  
    
 • 抗溶解性 • 耐化學(xué)性良好 • 韌性良好 
性能特點(diǎn) • 抗撞擊性，良好 • 耐磨蝕性，良好  
   • 水解穩(wěn)定 
 • 流動(dòng)性高 • 耐氣候影響性能良好  
    
 • 薄壁部件 • 管道 • 容器 
用途 • 電氣/電子應(yīng)用領(lǐng)域 • 緊固件  
   • 實(shí)驗(yàn)室器具 
 • 閥門(mén)/閥門(mén)部件 • 連接器  
    
外觀 • 半透明   
形式 • 顆粒料   
加工方法 • 吹塑成型 • 擠壓層涂法 • 注射成型 
 • 擠出 • 壓縮模塑  
    
    
物理性能  額定值單位制 測(cè)試方法 
比重  1.70g/cm³ ASTM D792 
熔流率 (297°C/5.0 kg)  30g/10 min ASTM D1238 
吸水率 (24 hr)  0.0070% ASTM D570 
機(jī)械性能  額定值單位制 測(cè)試方法 
抗張強(qiáng)度 (23°C)  40.0MPa ASTM D638 
伸長(zhǎng)率 (斷裂, 23°C)  300% ASTM D638 
彎曲模量 (23°C)  1030MPa ASTM D790 
沖擊性能  額定值單位制 測(cè)試方法 
懸壁梁缺口沖擊強(qiáng)度 (23°C)  無(wú)斷裂 ASTM D256 
熱性能  額定值單位制  
熔融溫度  255 到 280°C  
電氣性能  額定值單位制 測(cè)試方法 
體積電阻率  1.0E+17ohm•cm ASTM D257 
介電強(qiáng)度 (0.254 mm)  67kV/mm ASTM D149 
介電常數(shù) (23°C, 1 MHz)  2.70 ASTM D150 
耗散因數(shù) (23°C, 1 MHz)  0.0090 ASTM D150 
可燃性  額定值單位制 測(cè)試方法 
極限氧指數(shù)  31% ASTM D2863 
補(bǔ)充信息    
Limiting Oxygen Index, ASTM D2863: 30 to 32%   
Dielectric Constant, ASTM D1531, 1 MHz, 73°F: 2.6 to 2.8