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Polytetrafluoroethylene Sintering Process
- May 17, 2018 -

1, the long-term use of temperature -200--260 degree, excellent chemical corrosion resistance, corrosion resistance to all chemicals, the friction coefficient in the plastic is the lowest, and good electrical properties, its electrical insulation is not affected by temperature, the "plastic king" is called.

In a transparent or translucent state, the higher the crystallinity, the worse the transparency. The raw materials are mostly powdered resins or concentrated dispersions, with very high molecular weight and high crystallinity thermoplastic polymers. % S7]; H "w. B- B. G8 G& ` - T

3. It is suitable for making corrosion resistant parts, reducing wear resistant parts, seals, insulation parts and parts of medical devices.

Molding performance. F0 c& A0 E8 T "Y

1. crystalline material, low moisture absorption. % W5B W& J9 P8 `7 I2 J

2. poor mobility, easy decomposition, corrosion gas generated during decomposition. The molding temperature should be strictly controlled, the mold should be heated, and the resistance of the gating system to material flow should be small.

Powdered resins are often made by powder metallurgy and sintered. The sintering temperature is 360-375 degrees, not more than 410 degrees. Emulsion resins are usually processed by cold extrusion and sintering. They can form an anticorrosive coating on the surface of the articles. If products need to be transparent and have good toughness, quick cooling should be adopted. Extrusion molding can also be used to extrude tubes, rods and profiles.