Factors affecting the compression permanent deformation of rubber

02/12/2024
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1. Rubber types of different types of rubber (such as nitrile rubber, fluorine rubber, silicone rubber, etc.) have different compression permanent deformation characteristics. Generally speaking, the elasticity, high strength, the ability to crystallise the self-compensating rubber, its compression permanent deformation is smaller.
2. Crosslinking density rubber crosslinking density, the higher its elastic recovery ability, the better, the smaller the compression permanent deformation. The size of the crosslinking density depends on the temperature and time of the vulcanisation process, as well as the type and amount of vulcanising agent.
3. Filler fillers such as carbon black, silica, etc. on the compression permanent deformation of rubber has a certain effect. The type and dosage of filler will affect the physical and chemical properties of rubber, thus affecting the compression permanent deformation.
4.Temperature High temperature will accelerate the aging and creep of rubber materials, resulting in increased compression permanent deformation. While low temperature may lead to rubber material hardening and crystallisation, when the temperature rises, these effects disappear, but may also leave permanent deformation.
5. compression time and pressure size compression time, the longer the permanent deformation of rubber materials, the greater. The greater the pressure, the greater the deformation of the rubber material, the poorer the recovery ability, the greater the permanent deformation of compression.
6. Chemical medium rubber material in different chemical medium performance is different, some chemical medium may lead to rubber material aging, increase compression permanent deformation.