Automobile air conditioning hose is a special hose used in the automotive air conditioning refrigeration system to complete the refrigeration cycle by transmitting refrigerants of different pressures and gas-liquid states, which is divided into three types: pure rubber, rubber-resin composite material and pure resin material, which is generally composed of an inner rubber layer, a reinforcing layer and an outer rubber layer. Butyl reclaimed rubber is processed from waste butyl inner tube, which has the performance characteristics of good air tightness, heat resistance, chemical corrosion resistance, etc., and the appropriate amount of butyl reclaimed rubber is mixed with automobile air conditioning hoses, which can effectively reduce the cost of raw materials.
1. Application of butyl reclaimed rubber in the outer layer of automobile air conditioning hose
The main function of the outer rubber layer of the automotive air conditioning hose is to protect the inner rubber layer and the reinforcing layer from external environmental factors, such as ultraviolet rays, ozone, humidity and mechanical friction, etc., to prolong the service life of the hose, and the rubber is required to have good weather resistance, ozone resistance and abrasion resistance, and is generally processed with EPDM rubber as E4LYY92 the main raw material. Appropriate amount of butyl reclaimed rubber is mixed in EPDM rubber, and 20-30 parts of butyl reclaimed rubber can be mixed in 100 parts of EPDM rubber, and the physical and mechanical properties of vulcanized rubber are good, which can not only reduce the cost of raw materials, but also improve the processing performance, processing safety and hot air aging resistance of the finished product.
2. Application of butyl reclaimed rubber in the inner layer of automobile air conditioning hose
The inner layer of the rubber of the automobile air conditioning hose is in direct contact with and transports the refrigerant, and the rubber is required to withstand the chemical corrosion of the refrigerant and the change of high and low temperatures, ensure the sealing of the hose, and prevent the leakage of the refrigerant. When using butyl rubber, chlorinated butyl rubber, and EPDM rubber to produce the inner layer of automobile air conditioning hose, an appropriate amount of butyl reclaimed rubber can effectively reduce the cost of raw rubber.
The rational use of butyl reclaimed rubber in the production of the inner layer rubber of automobile air conditioning hose can improve the characteristics of slow vulcanization speed and poor mutual adhesion of butyl rubber and reduce costs. Using EPDM as the main raw material to prepare the inner layer of automobile air conditioning hose, and an appropriate amount of butyl reclaimed rubber can improve the air tightness of the inner layer of rubber, prevent the leakage of refrigerant in the automobile air conditioning system, and save the cost of raw rubber.
Butyl reclaimed rubber retains the basic performance characteristics of butyl rubber, and can be used in combination with butyl rubber, chlorinated butyl rubber, EPDM rubber, etc. to produce the outer layer rubber and inner layer rubber of automotive air conditioning hoses, and the reasonable design of air conditioning hose vulcanization formula containing butyl reclaimed rubber can further optimize the quality of finished products and reduce costs; In the future, Xiaobian will share with you the vulcanization formula of different rubber layers for the production of automotive air conditioning hoses by combining butyl reclaimed rubber with other rubbers.
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