EPDM Rubber Encyclopedia

The role of paraffin oil in EPDM seals

Create Date:2019-03-22 09:24:09Click volume:486
The role of paraffin oil in EPDM seals

Paraffin oil is a rubber oil commonly used in the processing of rubber products, also known as paraffin oil, which is one of mineral oils. When using EPDM reclaimed rubber to produce rubber seals, many rubber manufacturers choose paraffin oil as the softening oil to improve the processing performance of EPDM reclaimed rubber and the quality of finished seals. So what role can paraffin oil play in the production of EPDM seals?

1. Paraffin oil can improve the processing performance of EPDM recycled rubber

The use of EPDM reclaimed rubber to produce rubber seals, the addition of appropriate amount of rubber oil in the formula can reduce the heat of mixing and reduce the energy consumption of production; at the same time, paraffin oil can soften the rubber compound like other types of rubber oil. The effect of improving the smoothness of the surface of the rubber sealing strip, reducing the extrusion expansion, and increasing the extrusion speed is more obvious.

2. Paraffin oil can reduce the amount of vulcanizing agent in the EPDM sealant formula

When EPDM reclaimed rubber is used as the main raw material to produce door seals, car seals and other rubber seals that are exposed to the outside for a long time, the peroxide is vulcanized, and TAC, TAIC, etc. can be used to obtain better heat resistance. Sex and compression set. Paraffin oil itself has a low aromatic content, which can reduce the consumption of vulcanizing agent to a certain extent in the peroxide vulcanization system, thereby reducing the raw material cost of the EPDM reclaimed rubber sealing strip.

3. Paraffin oil can improve the adaptability of EPDM seals

Paraffin oil itself has high flash point and low volatile content, which can improve the weather resistance and high temperature volatility of EPDM reclaimed rubber seals. The low aromatic content can improve the anti-oxidation degradation performance of rubber, thus prolonging the EPDM regenerative rubber seal. The service life of the strip.

4 paraffin oil can improve the appearance quality of EPDM reclaimed rubber seals

Paraffin oil has softening and lubricity, which can further improve the appearance quality of rubber sealing strips, such as improving surface smoothness and eliminating bubbles. The smooth and dense EPDM reclaimed rubber sealing strip not only looks good, but also gives better quality to the strip. Adaptability to the external environment.

5. Paraffin oil can reduce the smell of EPDM reclaimed rubber seal

The aromatic hydrocarbon component in the rubber oil will cause the EODM sealing strip to emit a certain pungent odor. Therefore, it is necessary to control the aromatic content in the rubber oil; the paraffin oil has a low aromatic content, which meets this standard, and the high flash point paraffin The oil has a small volatile content, and can also inhibit the escape of the aromatic hydrocarbon component, and solve the problem of the odor of the EPDM reclaimed rubber seal.

The use of an appropriate amount of paraffin oil in the rubber sealing strip with EPDM reclaimed rubber as the main raw material is of great significance for improving the processing performance of the rubber compound and improving the finished product grade of the sealing strip. However, in the actual operation process, the type and amount of paraffin oil need to be reasonably controlled. For example, the paraffin oil with a flash point below 180 °C has a particularly large volatilization loss and is used with caution; the addition of paraffin oil reduces the concentration of the vulcanization system in the rubber compound, thereby Reduce the vulcanization rate and so on. The following small editors will talk to you about the use of paraffin oil in the production of all recycled rubber products including EPDM reclaimed rubber seals.