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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 equivalent 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 requirements.Teflon ® 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 requirements of ASTM D3307, TypeI

物性信息：

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