Fluorine rubber

An overview of the

It is a synthetic rubber containing fluorine atoms. Fluorine rubber has the characteristics of high temperature resistance, oil resistance and corrosion resistance of various chemicals.

type

Fluoro rubber TP, commonly known as tetrapropyl rubber in China, asahi glass brand AFLAS, is a copolymer of tetrafluoroethylene and hydrocarbon propylene, with excellent water vapor resistance and alkali resistance.

Vinylidene flurane rubber, DuPont VITON GLT, for vinylidene fluoride, tetrafluoroethylene, perfluoromethyl vinyl ether, vulcanization point monomer four-element copolymer, excellent low temperature performance.

Perflurane rubber, excellent low temperature performance, high fluorine content, excellent solvent resistance.

Fluorosilicone rubber, excellent performance at low temperature, with certain solvent resistance.

Fluorine rubber is mainly used in automobile and motor vehicle industry, because of its high temperature resistance, oil resistance and medium resistance performance, mainly for oil seal and O-ring.

The main performance

Good chemical stability: high chemical stability, resistance to petroleum based oil, double ester oil, silicone ether oil, silicone acid oil, resistance to inorganic acid, resistance to most organic and inorganic solvents, drugs, only not resistant to low molecular ketone, ether, ester, amine, ammonia, hydrofluoric acid, chlorosulfonic acid, phosphoric acid

Excellent high temperature resistance: long term use at 250℃, short term use at 300℃; The elongation at break can be maintained at about 100% and the hardness is 90~95 degrees.

Good aging resistance: weather aging resistance, ozone resistance.

Excellent vacuum performance

Excellent mechanical properties

Fluorine rubber has excellent physical and mechanical properties. Type 26 fluoro rubber is generally compatible with the strength between 10~20MPa, the elongation at break is between 150~350%, and the tear strength is between 3~4KN/m.

Good electrical performance is good, hygroscopicity is lower than other elastomers, can be used as a better electrical insulation material can be used at low frequency and low voltage.

Permeability is small

The solubility of fluorine rubber to gas is relatively large, but the diffusion rate is relatively small

Fluorine rubber has poor performance at low temperature.

Poor radiation resistance

The radiation resistance of fluorine rubber is one of the relatively poor elastomers

The key application

Because of the characteristics of high temperature resistance, oil resistance, high vacuum resistance and acid and alkali resistance, resistance to a variety of chemicals, fluorine rubber has been used in modern aviation, missiles, rockets, space navigation, ships, atomic energy and other cutting-edge technology and automobile, shipbuilding, chemistry, petroleum, telecommunications, instrument, machinery and other industrial fields.

Typical applications

Fluorine rubber seals, used for engine sealing, can work at 200℃~250℃ for a long time, at 300℃ for a short time, its working life can be the same as the engine repair life, up to 5~10 years; Used in the chemical industry, can seal inorganic acid and other organic matter; For deep well production, it can withstand harsh working conditions of 149℃ and 420 atmospheres; When used for superheated steam seals, it can work in the steam medium of 160~170℃ for a long time. In the production of monocrystalline silicon, fluoro rubber seals are commonly used to seal special medium at high temperature (300℃) - trichlorosilicon, silicon tetracloride, gallium arsenide, phosphorus trichloride, trichloroethylene and hydrochloric acid at 120℃.

The rubber hose made of fluorine rubber is suitable for high temperature resistance, oil resistance and special media, and the wire and cable made of fluorine rubber has good flexibility and good insulation. The glass fiber adhesive made of fluorine rubber can withstand high temperature of 300℃ and chemical corrosion. Aramid cloth coated with fluorine glue, can be made between petrochemical plants with high temperature, acid and alkali resistance between the connecting telescopic pipe (metal flange connection at both ends), can withstand high pressure, high temperature and medium corrosion, and the deformation of the two tanks play a cushioned shock absorption connection role. The rubber sealing bag made of nylon cloth coated with fluorine adhesive is used as a soft seal for the inner floating roof storage tank of oil refinery, which can seal and reduce the volatile loss of oil level.

Sealant made of fluorine rubber - putty, outstanding fuel oil resistance, can be used in about 200℃ oil, is used as a sealing material for the aircraft overall oil tank. With fluorine rubber made of closed cell sponge, acid resistance, oil resistance, wide use of temperature range and good insulation, can be used as rocket fuel, solvent, hydraulic oil, lubricating oil and ointment seal and rocket, missile damping material, temperature up to 204℃, impregnated fluorine latex asbestos fiber cloth, can be made of asbestos rubber board, For high temperature resistance, combustion resistance and chemical resistance.