Teflon™  PFA 9738-JN is a premium resin available only as  a free-flowing powder. Its most unique features, controlled  particle size and size distribution, provide proper flow and  fusion behavior in rotational molding process. In addition,  Teflon™  PFA 9738-JN is chemically modified to yield enhanced  resin purity, lower extractable fluorides, and freedom from  other foreign materials. Its surface smoothness is improved  by minimizing spherulite size, and its chemical permeability  resistance is enhanced by increasing its crystallinity. This  product contains no additives and is designed for hostile  chemical environments where purity in the parts-per-billion  range is needed. 

The properties of Teflon™  PFA 9738-JN in molded form  are similar to other grades of Teflon™  PFA (perfluoroalkoxy)  fluoroplastic resin. Many properties are similar to those of  polytetrafluoroethylene (PTFE). 

Rotational molding is a favored process for making large,  hollow parts or for lining objects with complex inside surfaces.  Applications for Teflon™  PFA 9738-JN include linings molded  in place using the object to be lined as the mold. Teflon™  PFA  9738-JN is preferred when high performance is a major  requirement involving chemical, thermal, and mechanical stress. 

Properly processed rotational moldings made from neat  Teflon™  PFA 9738-JN resin provide the superior properties  typical of the fluoroplastic resins: retention of physical  properties after service at 260 °C (500 °F), useful properties  at –196 °C (–321 °F), and chemical inertness to nearly all  industrial chemicals and solvents. Dielectric properties are  excellent. Molded products have moderate stiffness and high  ultimate elongation. Table 1 shows the typical property data for Teflon™  PFA 9738-JN. 

In a flame situation, products of Teflon™  PFA 9738-JN 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. 

Typical End Products 

Teflon™  PFA 9738-JN is ideal for many end products for fluid  handling in the chemical processing industries, including pump  housings, vessels, columns, elbows, tees, and pipe sections  with unusual shapes. In addition, any hollow structure with  internal contours that permit uniform coating by powder  flow is a candidate for lining, provided it can withstand high  temperatures. Because of its enhanced resin purity, Teflon™  PFA  9738-JN is suitable for use in semiconductor manufacture and  fluid handling systems for industry or life sciences.