PFA 345, 高 ESCR（抗应力裂纹）, 流动性中等, 泵件, 电线电缆, 管道, 阀门/阀门

PFA 345, 高 ESCR（抗应力裂纹）, 流动性中等, 泵件, 电线电缆, 管道, 阀门/阀门 Teflon® PFA 345 全氟烷氧基 DuPont Fluoropolymers 产品说明 Teflon® PFA 345 is a medium-flow-rate resin available in clear 2.5-mm (0.1-in.) pellets. Compared with Teflon® PFA 340, it offers increased flex life and greater resistance to environmental stress cracking. All grades of Teflon® PFA combine the processing ease of conventional thermoplastics with properties similar to those of Teflon® PTFE fluorocarbon resin. They have high melt strength, stability at high processing temperatures, and resistance to creep at high service temperatures. Teflon® PFA retains its properties after service at 260°C (500°F) and has useful properties at temperatures as low as -196°C (-320°F). It is inert to nearly all industrial chemicals and solvents, and its dielectric properties are excellent. Products made with Teflon® PFA have moderate stiffness and high elongation. In a flame situation, products of Teflon® PFA resist ignition and do not themselves promote flame spread. When ignited by flame from other sources, their contribution of heat is very small and added at a slow rate with very little smoke. 总体材料状态 • 已商用：当前有效供货地区 • 北美洲 • 欧洲 • 拉丁美洲 • 亚太地区 • 刚性，良好 • 良好的熔体强度 • 烟释放，低性能特点 • 高 ESCR（抗应力裂纹） • 流动性中等 • 抗溶解性 • 耐化学性良好 • 延展性，高 • 良好的抗蠕变性 • 耐气候影响性能良好用途 • 泵件 • 电线电缆应用 • 管道 • 衬里 • 阀门/阀门部件 • 零件装置外观 • 清晰/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 2.14g/cm³ ASTM D792 熔流率 (372°C/5.0 kg) 6.5g/10 min ASTM D1238 吸水率 (24 hr) 0.010% ASTM D570 机械性能额定值单位制测试方法抗张强度 29.0MPa ASTM D638 伸长率 (断裂) 300% ASTM D638 弯曲模量 690MPa 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 硬度额定值单位制测试方法硬度计硬度 (邵氏 D) 60 ASTM D2240 热性能额定值单位制测试方法熔融温度 305°C 线形膨胀系数 - 流动 (38 到 71°C) 0.00016cm/cm/°C ASTM D696 导热系数 0.22W/m/K ASTM C177 电气性能额定值单位制测试方法体积电阻率 1.0E+18ohm•cm ASTM D257 介电强度 (0.0250 mm) 80kV/mm ASTM D149 介电常数 ASTM D150 60 Hz 2.10 1.00 GHz 2.10 耗散因数 ASTM D150 60 Hz 0.00060 1.00 GHz 0.00060 可燃性额定值单位制测试方法 UL 阻燃等级 V-0 UL 94