Elastic O-shaped rubber sealing ring and preparation method thereof

Abstract

The invention relates to an elastic O-shaped rubber sealing ring and a preparation method thereof, and belongs to the technical field of sealing. As trifluoropropyl is introduced in a silicone chain,fluorosilicone rubber can have performance of fluororubber such as fuel resistance and solvent resistance on the basis of keeping a series of excellent performance of methyl silicone rubber like highand low temperature resistance, weather resistance, compression recovery, resilience, demolding property, etc.; through the polymerization with triethoxyvinylsilane, high molecular weight fluorosilicone raw rubber with stable quality can be prepared; and the elastic O-shaped rubber sealing ring can be prepared by adding modified hydrotalcite as a structure control agent, a heat-resistant stabilizer and other auxiliary agents. The elastic O-shaped rubber sealing ring has good heat resistance, wear resistance and aging resistance; and the internal binding force of the rubber sealing ring can beincreased by adding the modified hydrotalcite, so that the tensile resistance, aging resistance, wear resistance, heat resistance, adhesion to metals and physical properties of the rubber sealing ringcan be effectively enhanced, and the sealing ring is small in compression permanent deformation and good in elasticity.

Description

technical field [0001] The invention relates to an elastic O-shaped rubber sealing ring and a preparation method thereof, belonging to the technical field of sealing. Background technique [0002] Modern pharmaceutical machinery mostly uses silicone rubber O-rings for sealing. Silicone rubber O-rings have good high and low temperature resistance and excellent sealing performance. The specially formulated silicone rubber can also better meet the stringent hygiene requirements of the food and pharmaceutical industries. It has long been the first choice for the food and pharmaceutical industry. Material. However, many compounding agents and components of silicone rubber will still enter into food, medicine and other media during the application of equipment, thereby reducing the purity of the media, especially adversely affecting the purity of high-quality drugs, thereby affecting the quality of the product; Moreover, silicone rubber has poor low temperature resistance, solve...

AI Technical Summary

Problems solved by technology

[0005] Technical problem to be solved by the present invention: Aiming at the problem of large compression permanent