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Tefzel 280
乙烯四氟乙烯共聚物
DuPont Fluoropolymers
产品说明
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.
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
• 高 ESCR（抗应力裂纹） • 流动性低 • 耐热性，高
性能特点 • 抗辐射性 • 耐化学性良好
• 抗溶解性 • 耐磨蚀性，良好 • 水解稳定
• 抗撞击性，良好 • 耐气候影响性能良好
• Abrasion Resistant Liners • 电气/电子应用领域 • 核能应用
用途 • 泵件 • 电器导线绝缘材料 • 紧固件
• 薄膜 • 阀门/阀门部件 • 零件装置
• 衬里 • 管道 • 型号
机构评级 • IEEE 383
外观 • 半透明
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 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
机械性能 额定值单位制 测试方法
抗张强度 (23°C) 46.2MPa ASTM D638
伸长率 (断裂, 23°C) 300% ASTM D638
弯曲模量 (23°C) 1170MPa ASTM D790
压缩强度 37.9MPa ASTM D695
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) 72 ASTM D2240
热性能 额定值单位制 测试方法
熔融温度 255 到 280°C
线形膨胀系数 - 流动 (0 到 100°C) 0.00013cm/cm/°C ASTM D696
电气性能 额定值单位制 测试方法
体积电阻率 1.0E+17ohm•cm ASTM D257
介电强度 (0.254 mm) 71kV/mm ASTM D149
介电常数 (23°C, 1 MHz) 2.55 ASTM D150
耗散因数 (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
电气性能 额定值单位制 测试方法
耐电弧性 122sec ASTM D495
可燃性 额定值单位制 测试方法
极限氧指数 31% ASTM D2863
补充信息
Limiting Oxygen Index, ASTM D2863: 30 to 32%
Dielectric Constant, ASTM D1531, 1 MHz, 73°F: 2.5 to 2.6
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