What is the difference between fluorosilicone rubber and silicone rubber

Fluorosilicone rubber has excellent oil resistance, solvent resistance, for aliphatic, aromatic and chlorinated hydrocarbon solvents; Petroleum-based fuel oil, lubricating oil, hydraulic oil and some synthetic oils (such as diester lubricating oil, silicone ester hydraulic oil, etc.) have good stability at room temperature and high temperature, and can also maintain elasticity.

Characteristics of fluorine silicone rubber

Resistance to oil, solvent and chemicals

Compared with methyl vinyl silicone rubber, fluorine silicone rubber has excellent oil resistance, solvent resistance and chemical resistance; Even compared with fluorine rubber, oil and solvent resistance is good. In the same medium, temperature, time after impregnation has shown excellent durability, it can be said that fluorine silicone rubber is the only kind of elastomer resistant to non-polar media at -60℃ ~ 260℃. The resistance of fluorine silicone rubber to methanol containing gasoline is also better, even in the gasoline/methanol mixed system, the hardness, tensile strength, volume change of the vulcanized rubber are very small, after a long time of 500h impregnation test, the physical properties are almost no change.

Heat resistance

The high temperature resistance of fluorine silicone rubber is the same as that of silicone rubber. By adding iron, titanium, rare earth oxides and a small amount of heat stabilizer, it can be significantly improved, even at 250℃ high temperature also has enough heat resistance. The effect of temperature on fluorine silicone rubber is greater than that on silicone rubber.

Cold tolerance

Fluorine silicone rubber and ordinary silicone rubber, low temperature performance is good. Fluorosilicone rubber is a linear polymer composed of soft Si-O as the main chain, so the low temperature characteristics are better than C-C fluororubber as the main chain. Among them, fluorine silicone rubber has better low temperature characteristics, and the brittle temperature can reach -59℃, while the general fluorine rubber is about -30℃.

Physical mechanical properties

Fluorine silicone rubber and ordinary silicone rubber, can be designed by optimizing the material formula, make conductive type, antibacterial type, flame retardant type, foaming type fluorine silicone rubber, on the basis of the original oil resistance and solvent resistance, increase the conductivity, antibacterial, flame retardant, foaming and other characteristics.

Other features

Fluorine silicone rubber weathering resistance is very good, even after 5 years of exposure, still maintain a good performance. Ozone is one of the most produced gases when the elastomer is aging, but no cracking or cracking phenomenon was found after the dynamic or static test of fluorine silicone rubber, which has good ozone resistance. In addition, the mildew resistance, physiological inertia, anticoagulation of fluorine silicone rubber is also very good, fluorine silicone rubber in high temperature, low temperature, humidity, oil, solvents, chemicals, ozone and other harsh conditions change very little. The radiation resistance of fluorosilicone rubber is not outstanding, but the radiation aging resistance of fluorosilicone rubber is better than that of methyl vinyl silicone rubber.

Application of fluorosilicone rubber products

1, aviation industry: aircraft fuel oil, lubricating oil seals, contact parts, such as all kinds of O-ring, gasket, sealing ring, sensor materials, diaphragm, fluorine and silicon liner clamp, can also be used for aircraft tank overall seal.

2, automotive industry: all kinds of vehicles turbo tube, seal ring, oil seal, diaphragm, conduit, valve lining, etc.

3, medical and health: used for medical instruments and artificial organs, such as medicinal catheters, drainage tubes, artificial valves, etc.

4, military industry: applied to the need for low temperature resistance, oil resistance, acid resistance in harsh environment, such as military aircraft hydraulic system infusion bellows, special vehicle doors and Windows, rear cover sealing strip, sensor sensing materials.

5, petrochemical industry: all kinds of high temperature, low temperature, chemical erosion resistance pump, valve, tank and other equipment seals.

Weierbo New materials is specialized in the production of fluorine silicone rubber, fluorine silicone oil, fluorine silicone mixed rubber (high rebound, high tear resistance, extrusion type, adhesive type, flame retardant, conductive type) source manufacturers, master the core technology, for customers to customize fluorine silicone material solutions!