Audited Supplier
PFA 451HP X
Packing:25kg/bag
For inventory control purposes, product name may be followed by an X. Products labeled PFA 451HP and PFA 451HP X are equivalent, and all information in this document is applicable to both.
Description
PFA 451HP is a special purpose fluoroplastic resin available in pellet form. This resin is a chemically modified form of PFA 350 that combines many of the advantages of the parent resin with several additional benefits.PFA 451HP exhibits improved surface smoothness achieved through minimization of spherulite size, enhanced chemical permeation resistance achieved by increasing its crystallinity from PFA 450HP, enhanced purity, and improved thermal stability while processing.
PFA 451HP 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 and chemical permeation make PFA 451HP a preferred resin when extended service is required in hostile environments involving chemical, thermal, and mechanical stress. Additionally, the enhanced purity of PFA 451HP 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 partsper-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 PFA 451HP can be used to improve processing rates, combining the processing ease of conventional thermoplastics with many properties similar to those of polytetrafluoroethylene.
Typical Applications
Applications for PFA 451HP include tubing, unsupported pipe linings for the production of ultra-pure chemicals, semiconductor fluid handling components, and high-performance chemical delivery systems where purity in the parts-per-billion range is needed.PFA 451HP is preferred in applications where surface smoothness and the highest levels of chemical permeation resistance are required.
Processing
PFA 451HP can be processed by conventional melt extrusion, and by injection, compression, transfer, and blow-molding processes. High melt strength and heat stability permit the use of relatively large die openings and high temperature draw-down techniques that increase production rates. Reciprocating screw injection molding machines are preferred. Corrosion-resistant metals should be used in contact with molten fluoroplastic resin. Extruder barrel should be long, relative to diameter, to provide residence time for heating the resin to approximately 390 °C (730 °F). For more detailed processing information, including recommended draw-down ratios, consult your Chemours representative.
Storage and Handling
Special product isolation and packaging procedures are used by Chemours to eliminate external contamination of PFA 451HP resin. Processors also must avoid contamination for successful production of high purity products. The properties of PFA 451HP resin are not affected by storage time. Ambient storage conditions should be designed to avoid airborne contamination and water condensation on the resin when it is removed from containers.
Food Contact Compliance
Properly processed products made from PFA 451HP resin can qualify for use in contact with food.
Packaging
PFA 451HP is supplied as pellets and is available in 25-kg multilayer bags with an integral polyethylene liner.
We can give discount according to order quantity.
We also have good experience in transportation both by air and ocean to overseas.
