抗紫外线,抗化学性,透明级,耐高温,耐老化,高流动,高抗冲,高刚性,耐磨,耐候
用途级别
电子电器部件,电动工具配件,电线电缆级,汽车部件,运动器材,家电部件,板材级
Teflon® PFA440HPA
Perfluoroalkoxy
DuPont Fluoropolymers
产品说明：
For inventory control purposes product name may be followed byan X.
Products labeled PFA 440HPA and PFA 440HPA X are e and allinformation in this document is applicable to both.
Typical Application
Applications for DuPont™ Teflon ® PFA 440HPA include fluid handlingcomponents for critical, high-purity processes like semiconductor,pharmaceutical, and biotechnology, as well as applications wherepurity in the parts-per-billion range is needed. Teflon ® PFA440HPA offers a slightly higher melt flow rate than Teflon ® PFA440HPB, providing greater processing ease.
Description
DuPont™ Teflon ® PFA 440HPA is a special purpose fluoroplasticresin available in pellet form. This resin is a chemically modifiedform of Teflon ® PFA 340 that combines many of the benefits of theparent resin (a relatively high typical melt flow rate of 16) withseveral additional benefits including enhanced purity, improvedthermal stability while processing, and chemical inertness, forexample, to ozonated fluids. Table 1 shows the typical propertydata for Teflon ® PFA 440HPA.
Teflon ® PFA 440HPA is a premium resin with the lowest level ofextractables designed to meet ultra-high purity re ® PFA 440HPA has a relatively high melt flow rate (typicalMFR of 16) for injection molding and extrusion processes, and thehighest level of inertness due to stable end group polymerstructure. The enhanced purity of Teflon ® PFA 440HPA makes itsuitable for applications that require improved color, lowerextractable fluorides, and freedom from other foreign materials.This product contains no additives and is designed for hostilechemical environments where purity in the parts-per-billion rangeis needed. Examples are in semiconductor manufacture, fluidhandling systems for industry or life sciences, and instrumentationfor precise measurements of fluid systems. Compared to otherthermoplastics, the high melt strength and thermal stability ofTeflon ® PFA 440HPA can be used to improve processing rates,combining the processing ease of conventional thermoplastics withmany properties similar to those of polytetrafluoroethylene.
Properly processed products made from neat Teflon ® PFA 440HPAresin provide the superior properties characteristic offluoroplastic resins: chemical inertness, exceptional dielectricproperties, heat resistance, toughness and flexibility, lowcoefficient of friction, non-stick characteristics, negligiblemoisture absorption, low flammability, performance at temperatureextremes, and excellent weather resistance.
In a flame situation, products of Teflon ® PFA 440HPA resistignition and do not promote flame spread. When ignited by flamefrom other sources, their contribution of heat is very small andadded at a slow rate with very little smoke.
Teflon ® PFA 440HPA meets the re of ASTM D3307, TypeI
物性信息：
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| 物理性能 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| 比重 | 2.15 | g/cm³ | ASTM D792 |
| 熔流率（熔体流动速率） (372°C/5.0 kg) | 16 | g/10 min | ASTM D3307, ISO 12086 |
| 吸水率 (24 hr) | < 0.030 | % | ASTM D570 |
| 硬度 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| 肖氏硬度 (邵氏 D) | 55 | ASTM D2240, ISO 868 |
| 机械性能 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| 抗张强度 | ASTM D3307, ISO 12086 | ||
| 23°C | 25.0 | MPa | ASTM D3307, ISO 12086 |
| 250°C | 14.0 | MPa | ASTM D3307, ISO 12086 |
| 伸长率 | ASTM D3307, ISO 12086 | ||
| 断裂, 23°C | 300 | % | ASTM D3307, ISO 12086 |
| 断裂, 250°C | 480 | % | ASTM D3307, ISO 12086 |
| 弯曲模量 | ASTM D790, ISO 178 | ||
| 23°C | 590 | MPa | ASTM D790, ISO 178 |
| 250°C | 55.0 | MPa | ASTM D790, ISO 178 |
| 热性能 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| 熔融温度 | 305 | °C | ASTM D4591 |
| 电气性能 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| 体积电阻率 | 1.0E+18 | ohms·cm | ASTM D257, ISO 1325 |
| 介电强度 | |||
| 0.250mm 1 | 80 | kV/mm | ASTM D149 |
| 0.250 mm | 80 | kV/mm | IEC 60243-1 |
| 介电常数 (1 MHz) | 2.03 | ASTM D150, IEC 60250 | |
| 耗散因数 (1 MHz) | < 2.0E-4 | ASTM D150, IEC 60250 |
| 可燃性 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| UL 阻燃等级 2 | V-0 | UL 94 | |
| 极限氧指数 | > 95 | % | ASTM D2863, ISO 4589-2 |
| 补充信息 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| Critical Shear Rate (372°C) | 56.0 | sec^-1 | |
| MIT Folding Endurance 3(200.0µm) |
食品级PP 食品级1100NK(容器)、1102NK；泰国台福聚PF7251,SF7251(MI=9.5，5.0玻纤20%，本色FDA，￥21)PP台福聚PP台湾台塑 1120(透明食品级FDA认证）；7633,7533(高抗冲)；超高透明性PP ST611M、ST868M；耐热高刚性ST242、SI4301；高刚性高抗冲阻燃级PJ3040；(高透明食品级 PP 5090T FDA认证）；3015；台塑
