Filling type sealing auxiliary agent

Abstract

The invention discloses a filling type sealing auxiliary agent, which comprises, by weight, 20-30 parts of styrene butadiene rubber, 5-30 parts of nano-scale carbon black, 20-30 parts of a plasticizer, 15-35 parts of barium sulfate, 2-10 parts of a rare earth material, 10-30 parts of triethylamine, 10-15 parts of a flame retardant, 5-10 parts of an ultraviolet ray absorber, 5-10 parts of a heat stabilizer, 3-9 parts of an antioxidant and 15-25 parts of a tackifier. According to the invention, through the plasticizers, the performance of polymer materials is improved, the production cost is reduced, the productivity effectiveness is increased, and the plasticity and the strength of the material are improved; and through the tackifier, the bonding strength between the styrene butadiene rubber and other materials is increased, and good stability, good viscosity, good tensile strength, good color retention and good oxidation resistance can be maintained at a temperature of 90 DEG C, so that the compression creep is small when the sealing auxiliary agent is used for sealing the covering cap, cannot be extruded from the edge of the covering cap after long-term use, and has strong sealingproperty.

Description

technical field [0001] The invention relates to a sealing aid, in particular to a filling type sealing aid. Background technique [0002] The sealant is based on a high-density material, a material that deforms with the shape of the sealing surface, is not easy to flow, and has a certain degree of cohesion. It can prevent the intrusion of external impurities and the leakage of internal substances at the static joints of various machines. , a material with good sealing performance, is widely used in the sealing of chemical industry, machinery, construction, transportation, electronic instruments and parts. After a long time of use, it will squeeze out from the edge of the lid, and the sealing performance will be reduced. So we improve this and propose a filling type sealing aid. Contents of the invention [0003] In order to solve the problems of the technologies described above, the present invention provides the following technical solutions: [0004] A filling type se...

AI Technical Summary

Problems solved by technology

[0002] The sealant is based on a high-density material, a material that deforms with the shape of the sealing surface, is not easy to flow, and has a certain degree of cohesion. It can prevent the intrusion of external impurities and the leakage of internal substances at the static joints o