1、Under aerobic participation, the aging results of various high and low pressure hoses are different. Natural high and low pressure rubber hoses, isopentyl high and low pressure rubber hoses, and butyl high and low pressure rubber hoses undergo thermal oxidative aging mainly due to the cracking of large molecular chains, which become soft and sticky; During the thermal oxidative aging process, the styrene butadiene high and low pressure rubber hoses, butadiene nitrile high and low pressure rubber hoses, and ethylene propylene diene monomer high and low pressure rubber hoses are mainly interlocked after chain breakage, which destroys the elastic layout of the high and low pressure rubber hoses and makes them hard and brittle.

2. Heating high and low pressure hoses to a certain temperature will cause degradation. Natural high and low pressure rubber hoses begin to decompose into low molecular weight substances when the temperature exceeds 200 degrees Celsius. The thermal stability of high and low pressure rubber hoses mainly depends on their chemical composition and layout. Among the general high and low pressure hoses, Shunding high and low pressure hose has the best thermal stability, followed by SBR high and low pressure hose.

The origin of thermal oxidative aging of high and low pressure rubber hoses lies in the incomplete bonding. Silicone high and low pressure rubber hoses, fluorine high and low pressure rubber hoses, butyl high and low pressure rubber hoses, ethylene propylene high and low pressure rubber hoses, polyurethane high and low pressure rubber hoses, acrylic high and low pressure rubber hoses, etc., which tend to have a full layout, belong to heat-resistant and aging elastomers.

High and low pressure rubber hoses