| abstract |
The invention discloses an engine damping block rubber, which belongs to the technical field of rubber preparation, and solves the problem in the prior art that the damping block rubber will age and become brittle or deformed by heat, and lose its original damping effect, including the following parts by weight Raw materials: 90-110 parts of epoxidized natural rubber, 30-40 parts of phenolic resin, 3-5 parts of reclaimed rubber, 10-15 parts of modified silica, 3 parts of additives, 2.5 parts of zinc oxide, 0.75 parts of accelerator 1.5 parts of sulfur, 0.5 parts of sulfur, 3.8 parts of calcium carbonate, 5-8 parts of carbon black, and 3-5 parts of lubricant; the invention also discloses a preparation method of the rubber. Obtained, wherein the epoxidized natural rubber and phenolic resin can undergo chemical cross-linking reaction to form hydrogen bonds and improve the damping properties of the rubber material at high temperatures; the addition of additives and modified silica can improve the aging resistance of the rubber material. , Oil resistance, high temperature resistance. |