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Tefzel 207
乙烯四氟乙烯共聚物
DuPont Fluoropolymers
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.
总体
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材料状态
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• 已商用：当前有效
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供货地区
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• 北美洲
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• 欧洲
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• 南美洲
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• 亚太地区
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• 抗溶解性
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• 耐化学性良好
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• 韧性良好
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性能特点
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• 抗撞击性，良好
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• 耐磨蚀性，良好
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• 水解稳定
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• 流动性高
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• 耐气候影响性能良好
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• 薄壁部件
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• 管道
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• 容器
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用途
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• 电气/电子应用领域
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• 紧固件
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• 实验室器具
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• 阀门/阀门部件
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• 连接器
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外观
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• 半透明
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形式
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• 颗粒料
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加工方法
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• 吹塑成型
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• 挤压层涂法
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• 注射成型
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• 挤出
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• 压缩模塑
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物理性能
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额定值单位制
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测试方法
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比重
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1.70g/cm³
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ASTM D792
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熔流率 (297°C/5.0 kg)
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30g/10 min
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ASTM D1238
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吸水率 (24 hr)
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0.0070%
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ASTM D570
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机械性能
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额定值单位制
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测试方法
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抗张强度 (23°C)
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40.0MPa
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ASTM D638
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伸长率 (断裂, 23°C)
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300%
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ASTM D638
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弯曲模量 (23°C)
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1030MPa
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ASTM D790
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冲击性能
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额定值单位制
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测试方法
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悬壁梁缺口冲击强度 (23°C)
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无断裂
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ASTM D256
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热性能
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额定值单位制
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熔融温度
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255 到 280°C
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电气性能
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额定值单位制
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测试方法
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体积电阻率
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1.0E+17ohm·cm
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ASTM D257
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介电强度 (0.254 mm)
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67kV/mm
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ASTM D149
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介电常数 (23°C, 1 MHz)
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2.70
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ASTM D150
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耗散因数 (23°C, 1 MHz)
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0.0090
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ASTM D150
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可燃性
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额定值单位制
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测试方法
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极限氧指数
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31%
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ASTM D2863
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补充信息
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Limiting Oxygen Index, ASTM D2863: 30 to 32%
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Dielectric Constant, ASTM D1531, 1 MHz, 73°F: 2.6 to 2.8
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备注
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1 一般属性：这些不能被视为规格。
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