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Waterproof Membrane Synthetic Polymer Materials

Jun 23, 2017

Waterproof Membrane Synthetic polymer materials

Properties of breathable film


Polytetrafluoroethene, commonly known as "non-stick coating" or "easy to clean wok material"; is a fluorine-substituted polyethylene used in all the hydrogen atoms of synthetic synthetic polymer materials. The material has the characteristics of acid and alkali resistance, anti-all kinds of organic solvents, almost insoluble in all the solvent.At the same time, waterproof breathable film with high temperature characteristics, its friction coefficient is very low, so it can be used for lubrication, Has become an ideal paint for the easy-to-wok and inner tube.


Waterproof breathable film (English abbreviation for Teflon or [PTFE, F4]), known as "plastic king", Chinese trade name "Teflon", "Teflon" (teflon), "Teflon" "Te Fulong", "Teflon" and so on. It is made of polytetrafluoroethylene polymer compounds, with excellent chemical stability, corrosion resistance (is the world's best corrosion resistance of one of the materials, in addition to molten metal sodium and liquid fluoride, the ability of other All the chemicals, boiled in the water can not afford to change, widely used in various needs of acid and alkali and organic solvents), sealing, high lubrication non-stick, electrical insulation and good resistance to aging, excellent temperature ( Can work at temperatures from + 250 ° C to -180 ° C). The waterproof breathable membrane itself is not toxic to humans, but one of the raw materials used in the production process, PFA, is considered to be carcinogenic. Temperatures from -20 to 250 ° C (-4 to + 482 ° F), allowing quenching, or hot and cold alternately. Pressure -0.1 ~ 6.4Mpa (full negative pressure to 64kgf / cm2) (Full vacuum to 64kgf / cm2) It produces a solution to China's chemical, petroleum, pharmaceutical and other areas of many problems. Teflon seals, washers, gaskets. PTFE seals, gaskets, gaskets are selected suspension polymerization waterproof breathable film made of resin molding. Teflon has a chemical resistance and resistance compared to other plastics, and it has been widely used as a sealing material and a filler material. Used as engineering plastics, can be made of PTFE tube, rod, belt, plate, film and so on. Generally used in high performance requirements of corrosion-resistant pipes, containers, pumps, valves and the system of radar, high-frequency communications equipment, radio equipment. Dispersions can be used as insulating dipping solutions for various materials and metal, glass, anti-corrosion layers on the surface of pottery. Various PTFE ring, poly PTFE gasket, PTFE packing and other widely used in various types of anti-corrosion pipe flange seal. In addition, can also be used for spinning, Teflon fiber - fluorine (foreign trade name Teflon). Various types of PTFE products in the chemical industry, machinery, electronics, electrical appliances, military, aerospace, environmental protection and bridges and other areas of the national economy played a pivotal role. Water and breathable membrane (PTFE) conditions of use Chemical, petrochemical, oil refining, chlor-alkali, acid, phosphate, pharmaceutical, pesticide, chemical fiber, dyeing, coking, gas, organic synthesis, nonferrous smelting, steel, Such as ion-exchange membrane electrolysis), viscous material delivery and operation, health requirements of highly stringent food, beverage and other processing production sector.

Use advantages

High temperature - use operating temperature up to 250 ℃.

Low temperature resistance - with good mechanical toughness; even if the temperature dropped to -196 ℃, can also maintain a 5% elongation.

Corrosion resistance - for most chemicals and solvents, showing inert, strong acid and alkali resistance, water and a variety of organic solvents.

Resistant to climate - the best aging life in plastics.

High lubrication - the lowest coefficient of friction in solid materials.

No adhesion - is the smallest surface tension in the solid material and does not adhere to any substance.

Non-toxic - with physiological inertia, as artificial blood vessels and organs long-term implantation in the body without adverse reactions.