产品说明
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.

Typical End Products
Tefzel ? 207 is ideal for many end products, including electrical components such as sleeving, coil forms, sockets, connectors, and switches; lab ware such as tubing, valves, containers, and fasteners; battery or instrument components that require chemical inertness; and mechanical parts. The high melt flow rate of this product makes it ideal for injection molding and thin wall extrusion.

性能特点 ?共聚物
?抗溶解性
?抗撞击性，高
?良好的电气性能
?流动性高
?耐化学性良好
?耐磨蚀性，良好
?耐气候影响性能良好
?韧性良好
?水解稳定


用途 ?薄壁部件 电气/电子应用领域 阀门/阀门部件 管道 紧固件 开关 连接器 容器 实验室器具


外观 ?半透明

形式 ?颗粒料

加工方法 ?吹塑成型
?挤出
?挤压层涂法
?树脂传递成型
?压缩模塑
?注射成型

物理性能 额定值 单位制 测试方法
比重 1.70 g/cm3 ASTM D792
熔流率 (297°C/5.0 kg) 30 g/10 min ASTM D3159
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) 40.0 MPa ASTM D3159
伸长率 (断裂, 23°C) 300 % ASTM D3159
弯曲模量 (23°C) 1000 MPa ASTM D790
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

热性能 额定值 单位制 测试方法
熔融温度 250 到 280 °C ASTM D3159
最高使用温度 150 °C UL 746

电气性能 额定值 单位制 测试方法
体积电阻率 1.0E 17 ohm·cm ASTM D257
介电强度 (0.250 mm) 67 kV/mm ASTM D149
介电常数 (23°C, 1 MHz) 2.60 到 2.80 ASTM D150
耗散因数 (23°C, 1 MHz) 0.0090 ASTM D150
可燃性 额定值 单位制 测试方法
极限氧指数 30 到 32 % ASTM D2863

补充信息Weather and Chemical Resistance: Excellent