PFA is Perfluoroalkoxy.It is a copolymer of a small amount of perfluoropropyl perfluoroethylene ether and polytetrafluoroethylene. PFA pipe character remains unchanged compared to polytetrafluoroethylene.But the pfa hose melt adhesion is enhanced and the viscosity of the solution decreases.This PFA resin can be directly produced into products using ordinary thermoplastic forming methods.
Pfa tubing are suitable for making corrosion-resistant parts, wear reducing and wear-resistant parts, seals, insulation parts, and medical device parts, high-temperature wire and cable insulation layers, anti-corrosion equipment, sealing materials, pump valve bushings, and chemical containers.
tubing pfa characters:
Specific gravity: 2.13-2.167 g/cm3,
Shrinkage rate: 3.1-7.7%,
Molding temperature: 350-400 ℃,
Long term use temperature -196-260℃,
Excellent chemical corrosion resistance, It is similar to polytetrafluoroethylene but better than that of vinylidene fluoride.
Corrosion resistance to all chemicals,
Lowest friction coefficient among plastics,
Excellent electrical properties,
Electrical insulation is not affected by temperature,
Creep resistance and compressive strength are better than polytetrafluoroethylene, with high tensile strength and an elongation rate of 100-300%,
Good dielectric properties and excellent radiation resistance. The flame retardancy reaches V0 level.
Forming performance:
Crystalline material with low moisture absorption. Products can be processed using the usual processing methods of thermoplastic.
Poor fluidity, easy to decompose, and produce corrosive gases during decomposition. It is advisable to strictly control the molding temperature not to exceed 475 ℃, the mold should be heated to 150-200 ℃.
Color is semi transparent, injection molding, extrusion molding. The molding temperature is 350-400 ℃.If it is above 475 ℃, it is easy to cause discoloration or bubbles and the difficulty of demolding.
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