Hose products can be divided into fuel hoses,brake hoses,radiator rubber hoses,air conditioning hoses,power steering hoses,turbocharged hoses,etc.,which are mostly distributed in the three major assembly systems of automobile chassis systems,engine systems and body systems.It plays the role of oil transportation,gas transportation,water supply,control,power transmission,cooling and heating.According to statistics,the use of automobile hoses in China has reached more than 400 million meters in 2015.It is predicted that the market size of hoses in 2017 will exceed 600 million meters and the total value will exceed 24 billion yuan.
Fuel hoses are used as high-value rubber hoses for automotive hoses.In the automobile fuel system,by connecting the fuel tank,charcoal tank,oil pump,crankcase and other components,on the one hand,it transfers fuel to the engine for combustion work,on the other hand,it transfers evaporated oil and gas,fuel that has not participated in the combustion,and fuel exhaust gas to the fuel purification system for combustion Or discharge.With the tightening of fuel consumption regulations,the traditional three-layer structure of fuel hose materials has also been continuously replaced by new material skills.For example,automotive rubber parts require inner rubber with low permeability,which is gradually changing from nitrile rubber(NBR)to composite rubber layer of fluororubber(FKM)and fluororesin(THV)special rubber;it has ozone resistance,oil resistance and Wear-resistant outer rubber,also changed from neoprene(CR)or chlorosulfonated polyethylene rubber(CSM)to ethylene acrylate rubber(AEM),chlorosulfonated polyethylene(CSM),chloroether rubber(ECO);Four-layer,five-layer and even multi-layer composite hoses are also emerging.However,although the emergence of multi-layer structure hose has increased the high and strong wear resistance of the hose,the poor adhesion between the layers has brought new troubles to the fuel industry.
Brake hose,as an irreplaceable part of the automobile brake system,automobile rubber parts are mainly used to transmit braking force to the automobile brake shoe or brake caliper,to ensure continuous work of the braking force.According to different brake fluids,brake hoses are divided into petroleum-based and non-petroleum-based.With the increasing requirements for braking performance,energy conservation and environmental protection regulations,and the development and application of new materials,the inner layer of brake hoses has been replaced by styrene-butadiene rubber(SBR)by EPDM.),The inner rubber of the brake hose also has more choices of natural rubber(NR),nitrile rubber(NBR),neoprene(CR),EPDM,special rubber,etc.Generally,the outer layer can be selected from natural rubber(NR),neoprene(CR),EPDM(EPDM),corresponding to the inner layer selected nitrile rubber(NBR)and EPDM(EPDM),The middle layer uses cotton,polyester,rayon,aramid and other materials to increase strength.
These three rubber accessories on the car are very important!Previous
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