DuPont™ Tefzel ® fluoropolymer resins offer mechanical strength and toughness along with resistance to heat and chemicals. In addition, they provide easy processing, high specific dielectric strength, and a low coefficient of friction. For these reasons, Tefzel ® resins are widely used to make compact wire and cable constructions that provide long, reliable service in demanding environments.
Tefzel ® 750 retains the traditional characteristics of Tefzel ® resins while providing some new property advantages, including increased flexibility and improved retention of properties after aging at elevated temperatures, higher limiting oxygen index, and long-term service life at higher temperatures than other Tefzel ® resins.
Underwriters Laboratories, Inc. (UL) has rated wire insulated with Tefzel ® 750 (10 mil for 600V, 6 mil for 300V) for service in appliances at a maximum continuous operating temperature of 200°C (392°F). This rating was determined under the guidelines of UL Subject 758 for appliance wiring material. Upper service temperatures for other applications should be determined under the guidelines for those applications. Temperature ratings may not be the same as the rating for appliance wire because the test procedures are different.
总体
材料状态 •已商用：当前有效
资料 1 •Technical Datasheet (English)
性能特点 •低摩擦系数
•共聚物
•可加工性，良好
•良好的柔韧性
•耐化学性良好
•耐热性，高
•韧性良好
用途 •电器导线绝缘材料
•电线电缆应用
形式 •颗粒料
加工方法 •挤出
物理性能 额定值 单位制 测试方法
比重 1.75 到 1.79 g/cm3 ASTM D792
熔流率 (297°C/5.0 kg) 7.0 g/10 min ASTM D3159
机械性能 额定值 单位制 测试方法
抗张强度 ASTM D1708
23°C 37.9 MPa
140°C 11.4 MPa
160°C 8.62 MPa
180°C 6.21 MPa
200°C 3.45 MPa
伸长率 ASTM D1708
断裂, 23°C 300 %
断裂, 140°C 600 %
断裂, 160°C 650 %
断裂, 180°C 600 %
断裂, 200°C 600 %
弯曲模量 645 MPa ASTM D790
热性能 额定值 单位制 测试方法
熔融温度 219 到 254 °C ASTM D3159
可燃性 额定值 单位制 测试方法
极限氧指数 34 % ASTM D2863
挤出 额定值 单位制
第1气缸区温度 288 °C
第2气缸区温度 316 °C
第3气缸区温度 321 °C
连接器温度 321 °C
熔体温度 332 到 335 °C
模具温度 332 °C
