For inventory control purposes product name may be followed by an X.

Products labeled PFA 450HP and PFA 450HP X are equivalent and all information in this document is applicable to both.

Typical Application
Applications for Teflon ™ PFA 450HP include tubing, chemical linings for pipes, valves, and fittings used in the chemical processing industries, unsupported pipe linings for the production of ultra-pure chemicals, semiconductor components, and fluid handling components for high-performance chemical delivery systems where purity in the parts-per-billion range is needed. Teflon ™ PFA 450HP is preferred in applications where extended service is required in hostile environments involving chemical, thermal, and mechanical stress.

Description
Teflon ™ PFA 450HP is a special purpose fluoroplastic resin available in pellet form. This resin is a chemically modified form of Teflon ™ PFA 350 that combines many of the benefits of the parent resin (highest resistance to environmental stress-cracking with a typical MIT folding endurance of 500,000*) with several additional benefits including enhanced purity, improved thermal stability while processing, and chemical inertness; for example, to ozonated fluids. Table 1 shows the typical property data for Teflon ™ PFA 450HP.

Teflon ® PFA 450HP is a relatively low melt flow rate (typical MFR of 2), premium resin with the lowest level of extractables designed to meet ultra-high purity requirements. An enhanced resistance to environmental stress-cracking makes Teflon ® PFA 450HP a preferred resin when extended service is required in hostile environments involving chemical, thermal, and mechanical stress. Additionally, the enhanced purity of Teflon ® PFA 450 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. Compared to other thermoplastics, the high melt strength and thermal stability of Teflon ® PFA 450HP can be used to improve processing rates, combining the processing ease of conventional thermoplastics with many properties similar to those of polytetrafluoroethylene.

Properly processed products made from neat Teflon ® PFA 450HP resin provide the superior properties characteristic of fluoroplastic resins: chemical inertness, exceptional dielectric properties, heat resistance, toughness and flexibility, low coefficient of friction, non-stick characteristics, negligible moisture absorption, low flammability, performance at temperature extremes, and excellent weather resistance.

In a flame situation, products of Teflon ® PFA 450HP resist ignition and do not 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.

PFA塑料为少量全氟丙基全氟乙烯基醚与聚四氟乙烯的共聚物。熔融粘结性增强,溶体粘度下降，而性能与聚四氟乙烯相比无变化。此种树脂可以直接采用普通热塑性成型加工成制品。适于制作件，减磨件、密封件、绝缘件和医疗器械零件，高温电线、电缆绝缘层,防腐设备、密封材料、泵阀衬套,和化学容器。PFA塑料为少量全氟丙基全氟乙烯基醚与聚四氟乙烯的共聚物。熔融粘结性增强,溶体粘度下降,而性能与聚四氟乙烯相
高温电线、电缆绝缘层,防腐设备、密封材料、泵阀衬套,和化学容器。英文名称:Polytetrafluoro ethylene比重:2.13-2.167克/立方厘米
比无变化。此种树脂可以直接采用普通热塑性成型加工成制品。适于制作件,减磨件、密封件、绝缘件和医疗器械零件，
物理性能
成型收缩率:3.1-7.7%成型温度:350-400°C干燥条件:
1、为少量全氟丙基全氟乙烯基醚与聚四氟乙烯的共聚物。熔融粘结性增强，溶体粘度下降，而性能与聚四氟乙烯相比无
变化。此种树脂可以直接采用普通热塑性成型加工成制品。
2、长期使用温度-196-.260摄氏度，有的耐化学腐蚀性,对所有化学品都，摩擦系数在塑料中，还有很好的电性能，其电绝缘
性不受温度影响，有“塑料王”之称。
3、其耐化学药品性与聚四氟乙烯相似,比偏氟乙烯好。
4、其抗蠕变性和压缩强度均比聚四氟乙烯好,拉伸强度高,伸长率可达100-300%。介电性好,耐辐射性能阻燃性达VO级。
5、适于制作件,减磨件、密封件、绝缘件和医疗器械零件。

6、高温电线、电缆绝缘层,防腐设备、密封材料、泵阀衬套,和化学容器。