The Chinese name of the PFA particles is: tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer (also known as perfluoroalkylate, soluble polytetrafluoroethylene).

The chemical properties of PFA, FEP and PTFE are similar, but FEP can only be used below 200 degrees, and PTFE cannot be injected. PFA has a melting point of about 580F and a density of 2.13-2.16g/cc (grams per cubic centimeter). PFA is similar to PTFE and FEP, but above 302T, the mechanical properties are slightly better than FEP, and can be used at temperatures up to 500F, and its chemical resistance is equivalent to PTEF. The product forms of PFA particles are granular products for molding and extrusion, powder products for rotational molding and coating, and semi-finished products are films, plates, rods and pipes.

Meltable PTFE PFA transparent tube

Uses: semiconductor manufacturing equipment, heat exchangers, steam piping

High purity reagent delivery tube

Various frequency wire and cable sheath, slot insulation tube

Tube for all-inclusive fluoroplastic O-ring seals

Use characteristics: high and low temperature resistance

-00-255 ℃ high temperature strength is two times larger than F4

Non-stickiness, water and oil

No fouling and stagnation inside and outside the pipe wall

Electrical reliability, high insulation

60HZ-60MHZ high and low temperature dielectric constant is 2.1

Even if the surface loves damage due to flashover, it will not produce a conductive track.

Volume resistance> 1018Ωm

Surface resistance> 2 × 1013Ω

Arc resistance> 165 seconds no leakage

Corrosion resistance

Only the elements fluorine and alkali metals work with it at high temperatures.

For all other and concentrated, dilute inorganic organic acids, alkalis, esters have no effect

PFA particles low water absorption: low absorption rate <0.01%

PFA particles do not burn: do not burn in the air, (oxygen index> 95VO % )

PFA particles are non-toxic: physiologically inert

PFA particles high transparency: the lowest refractive index of all plastics

PFA particles weather resistance: can be exposed to ozone, sunlight for a long time

PFA GranulesEasy secondary workability: self-sealable, self-weldable, flanging, disc-to-tube

PFA transparent tube refers to a tubular elastic sensitive element connected by foldable wrinkle sheet along the direction of folding and stretching. Domestic production of PFA transparent tube, forming the main methods are hydraulic forming, mechanical bulging and rolling forming.

Hydraulic forming and rolling forming are more traditional PFA transparent tube forming methods, in the small diameter PFA transparent tube forming mostly use hydraulic forming method; for large diameter PFA transparent tube generally use rolling forming, but rolling forming usually can only roll single-layer PFA transparent tube. Mechanical bulging is a more advanced forming method developed in recent years. Compared with the previous production method of PFA transparent tube and hydraulic forming, it is found that the production efficiency is increased by more than 10 times (for the larger PFA transparent tube), and the labor intensity is also greatly reduced. When forming a multi-layer PFA transparent tube with a large diameter, the port does not need to be sealed, and the cleanliness between the layers of the PFA transparent tube can also be ensured. And the equipment is simple, the investment is small, the diameter of more than 100mm PFA transparent tube can use mechanical bulging method.

The manufacturing process of PFA transparent tube is as follows: PFA transparent tube forming-PFA transparent tube end edge weld-PFA transparent tube port shearing. The mechanical bulging of PFA transparent tube uses a circular inner membrane, which is composed of several mold flaps.

This article comes from:www.tflpfa.com