What role does paraffin oil play in epdm seals

    Paraffin oil, rubber process oil) is widely applied in IIR (butyl rubber), EPM (ethylene propylene rubber, EPDM (EPDM), IR (polyisoprene rubber) and NR (natural rubber) and some thermoplastic rubber, especially used for small request smell, good initial color rubber products, heat and light, good performance, which in the manufacture of household electrical appliances, children's toys and other products of is extremely important. Paraffin oil has been widely used in rubber processing formulations and plays an important role in many references for synthetic rubber industry applications. The application of epdm adhesive is more common. The role of paraffin oil in epdm sealing strip is introduced below.

1. Improve the processing performance of epdm

Adding an appropriate amount of rubber oil in the formula can reduce mixing heat generation, thus reducing production energy consumption; At the same time, paraffin oil and other types of rubber oil can soften the rubber, improve the surface of the rubber seal smooth degree, reduce the expansion of the pressure, increase the pressure out of the effect is more obvious.

2. Paraffin oil can reduce the amount of curing agent in the formula of epdm sealing strip

With epdm as the main raw material, the production of doors and Windows sealing strips, automotive sealing strips and other rubber sealing strips exposed to the outside for a long time, more peroxide vulcanization, with the use of TAC, cable, can obtain better heat resistance and compression resistance permanent deformation. The paraffin oil itself has a low content of aromatic hydrocarbons, so the consumption of vulcanizing agent can be reduced to some extent in the peroxide curing system, thus reducing the raw material cost of epdm sealing strip.

3. Paraffin oil can improve the adaptability of epdm rubber seal

The paraffin oil itself has high flash point and less volatilization, which can improve the weatherability and high temperature volatilization of the epdm regenerated rubber seal. The low aromatic content can also improve the antioxidant degradation performance of the rubber seal, thus prolonging the service life of epdm seal.

4. Paraffin oil can improve the appearance quality of epdm sealing strip

The paraffin oil has the properties of softening and lubricity, which can further improve the appearance quality of the rubber seal, such as improving the surface smoothness, eliminating bubbles, etc. The smooth and compact epdm seal not only looks good, but also gives the rubber strip better adaptability to the external environment.

5. Paraffin oil can reduce the smell of epdm sealing strip

The aromatic hydrocarbons in the rubber oil will cause the EODM seal strip to emit a certain pungent odor, so it is necessary to control the aromatic hydrocarbons in the rubber oil; Paraffin oil aromatics content is low, just meet this standard, and the high flash point of paraffin oil volatilization is small, can also inhibit the aromatic hydrocarbon component escape, solve the epdm seal peculiar smell problem.