Oil resistance is a very important feature of rubber materials. In many cases, rubber pads need to be used in environments with various oily media. Oil resistance is a very important parameter of rubber pads, but various rubber materials also have oil resistance capabilities. different, which will be described in detail below
Fuel resistance: Fluoroelastomer FKM and fluorosilicone rubber FMVQ have the best resistance to fuel oil. While neoprene and chlorinated polyethylene rubber CPE has the worst fuel resistance.
The fuel resistance of NBR increases with the increase of acrylonitrile content. The fuel resistance of chlorohydrin rubber is better than that of butadiene rubber.
Mixed fuel resistance: Fluorosilicone rubber FMVQ and fluorine rubber FKM have the best resistance to mixed fuel oil. Acrylic rubber has the least resistance to mixed fuels.
The mixed fuel resistance of NBR increases with the increase of acrylonitrile content.
Fluorine rubber with high fluorine content has better stability to mixed fuel.
Acid oxidation fuel resistance:
For acid oxidized fuel, the hydroperoxide in acid oxidized fuel can deteriorate the performance of vulcanizate, so nitrile rubber and chlorohydrin rubber commonly used in fuel systems are difficult to meet the requirements of long-term use.
Only fluoroelastomers such as fluoroelastomer FKM, fluorosilicone rubber FMVQ, fluorinated phosphoric acid and hydrogenated nitrile rubber have better performance.
Ordinary nitrile rubber compound cannot work for a long time in acid gasoline of 125 degrees. Only using cadmium oxide-activated low-sulfur-sulfur donor and nitrile rubber with white carbon black as the main raw materials can better resist acid gasoline. Increasing the content of acrylonitrile can reduce the permeability of sour gasoline