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PFA 440 HP, 抗溶解性, 吹塑成型, 壓縮模塑, 擠出, 注射成型
Teflon® PFA 440 HP
全氟烷氧基
DuPont Fluoropolymers
產(chǎn)品說明
DuPont™ Teflon® PFA 440 HP fluoropolymer is a special purpose resin available in clear, 2.5-mm (0.1-in.) pellets. This resin is a chemically modified form of Teflon® PFA 340 that combines many of the benefits of the parent resin with several new ones. The additional benefits may include enhanced purity, improved thermal stability while processing, and chemical inertness, for example, to ozonated fluids.
The enhanced purity of Teflon® PFA 440 HP makes it suitable for applications that require improved color, lower extractable fluorides, and freedom from other foreign materials. This product contains no additives and is designed for hostile chemical environments where purity in the parts-per-billion range is needed. Examples are in semiconductor manufacture, fluid handling systems for industry or life sciences, and instrumentation for precise measurements of fluid systems.
The improved thermal stability of Teflon® PFA 440 HP results in reduced amounts of bubbles in final parts and decreased corrosion of processing equipment. Teflon® PFA 440 HP combines the processing ease of conventional thermoplastics with properties similar to those of polytetrafluoroethylene.
Properly processed products made from neat Teflon® PFA 440 HP resin provide the superior properties typical of fluoropolymer resins: retention of properties after service at 260°C (500°F), useful properties at -196°C (-320°F), and chemical inertness to nearly all industrial chemicals and solvents. Dielectric properties are excellent. Molded products have moderate stiffness and high ultimate elongation.
Three categories (A, B, and D) of Teflon® PFA 440 HP resin covering a broad range of melt flow rates (MFR) are available. The low MFR resin provides a higher degree of stress crack resistance while the high MFR resin is easier to process.
In a flame situation, products of Teflon® PFA 440 HP 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.
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.
總體
材料狀態(tài) • 已商用：當(dāng)前有效
供貨地區(qū) • 北美洲 • 歐洲
• 南美洲 • 亞太地區(qū)
性能特點(diǎn) • 剛性，良好 • 耐化學(xué)性良好 • 煙釋放，低
• 抗溶解性 • 熱穩(wěn)定性，良好 • 延展性，高
用途 • 襯里 • 管道
外觀 • 清晰/透明
形式 • 顆粒料
加工方法 • 吹塑成型 • 樹脂傳遞成型 • 注射成型
• 擠出 • 壓縮模塑
物理性能 額定值單位制 測試方法
比重 2.14g/cm³ ASTM D792
吸水率 (24 hr) 0.030% ASTM D570
機(jī)械性能 額定值單位制 測試方法
抗張強(qiáng)度 ASTM D638
屈服, 23°C 13.8MPa
23°C 24.8MPa
250°C 12.4MPa
伸長率 ASTM D638
斷裂, 23°C 300%
斷裂, 250°C 480%
彎曲模量 ASTM D790
23°C 586MPa
250°C 55.2MPa
硬度 額定值單位制 測試方法
硬度計(jì)硬度 (邵氏 D) 55 ASTM D2240
熱性能 額定值單位制 測試方法
熔融溫度 302 到 310°C
線形膨脹系數(shù) - 流動 ASTM D696
21 到 100°C 0.00014cm/cm/°C
100 到 149°C 0.00017cm/cm/°C
149 到 209°C 0.00021cm/cm/°C
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Teflon® PFA 440 HP 2012年9月30日
全氟烷氧基
DuPont Fluoropolymers
電氣性能 額定值單位制 測試方法
體積電阻率 1.0E+18ohm•cm ASTM D257
介電強(qiáng)度 2 (0.254 mm) 79kV/mm ASTM D149
介電常數(shù) ASTM D150
60 Hz 2.03
1 MHz 2.03
耗散因數(shù) ASTM D150
60 Hz 0.00010
1 MHz 0.00010
可燃性 額定值單位制 測試方法
極限氧指數(shù) 95% ASTM D2863
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