东莞市崀峰塑胶原料有限公司
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.
Typical End Products
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.
Tefzel 207 物性表
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| 特性 |
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| 用途 |
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| 外观 |
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| 形式 |
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| 加工方法 |
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| 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（熔体流动速率）(297°C/5.0 kg) | 30 | g/10 min | ASTM D3159 |
| 吸水率(24 hr) | 7.0E-3 | % | 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 | ohms·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) | 9.0E-3 | 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 |
