Automobile radiator rubber hose has high requirements on the heat resistance, ozone resistance and chemical stability of the rubber raw materials used, especially the heat resistance, which directly affects the service life of the hose; most of the radiator hoses in the market use EPDM rubber. Or EPDM reclaimed rubber production, reasonable formula design can make the life of the hose more than the life of the car, in which the EPDM auto radiator hose glue volume has a great impact on its heat resistance.
The use of rubber packing can greatly reduce the cost of raw materials, but for automotive radiator hoses, a large number of fillers will significantly reduce the heat aging resistance of the hose and greatly shorten the service life of auto radiator hoses. This is because the continuous increase of fillers will reduce the glue content of the radiator rubber. Under normal circumstances, the rubber content of EPDM auto radiator hoses should be controlled between 35% and 40%. The higher the glue content, the higher The better the overall performance of the ethylene propylene rubber radiator hose, the longer the service life.
Although the product price of rubber packing is low, but excessive consumption will affect the heat resistance of the radiator hose, so it should not be used too much, it needs to reasonably control its dosage, then how to reduce the production cost of auto radiator hose? At this time, it would be necessary to mention EPDM reclaimed rubber.
The raw material of ordinary EPDM reclaimed rubber on the market is used car seals, washing machine sealing rings, etc.; the main raw material of EPDM reclaimed rubber with high rubber content is produced during the production of EPDM rubber products. EPDM head glue or unvulcanized EPDM rubber, this type of EPDM reclaimed rubber has higher content of effective rubber hydrocarbons, better aging resistance, better resistance to high and low temperature, and EPDM rubber. The index is closer, and the price is much lower than that of the EPDM rubber. Therefore, replacing the EPDM rubber with a certain percentage to produce automobile radiator hoses can also significantly reduce the cost of raw materials under the premise of ensuring heat resistance.
When using EPDM reclaimed rubber and EPDM rubber to produce automobile radiator rubber hose, we must choose the proper amount of EPDM reclaimed rubber to ensure the overall rubber content of the radiator hose. Above 35%, it guarantees excellent heat resistance of EPDM reclaimed rubber hose. In the formula of automobile radiator rubber hose made of EPDM reclaimed rubber as the main raw material, if the rubber content is low, a small amount of EPDM rubber can be added to avoid the use of sulfur vulcanization system for vulcanization and to increase the amount of rubber contained in the formula. EPDM auto radiator hose heat resistance.
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