A kind of high specific gravity rubber and preparation method thereof

Abstract

The invention discloses high-proportion rubber which comprises the following components: natural rubber #1, magnesium oxide or zinc oxide, scorch retarder N-cyclohexyl sulfo-o-phenyl dicarboximide, anti-aging agent N-phenyl-beta-naphthylamine or N-isopropyl-N'-phenyl p-phenylenediamine, N330 carbon black powder and the like. The invention also discloses a production method of the high-proportion natural rubber. The production method comprises the following steps: 1, mixing the natural rubber #1, plasticizer transformer oil #46 zinc stearate and environment-friendly iron in a sealed manner in an internal mixer; 2, further mixing the product, then adding magnesium oxide or zinc oxide, scorch retarder, anti-aging agent and the like and mixing again; 3, further mixing the product obtained in the step 2 for 5 minutes; then adding 3-6 parts of soluble sulfur vulcanizing agent or accelerant and mixing for 10 minutes; 4, performing compression molding on the product obtained in the step 3. The rubber disclosed by the invention can meet the application requirements of micro electronic products on damping and silencing and meets the development tendency of modern electronic products.

Description

Technical field [0001] The invention relates to the field of rubber preparation, in particular to a high specific gravity rubber and a preparation method thereof. Background technique [0002] With the rapid development of the electronic and electrical industry, natural rubber has been widely used in the field of vibration and noise reduction of electronic and electrical products due to its excellent practical properties such as wear resistance, softness, good shock and noise reduction, environmental protection, and low production cost. However, natural rubber also has shortcomings in the actual application process. Because the specific gravity of its rubber compound is generally below 4.5 grams per cubic millimeter, the specific gravity is relatively low. To achieve better shock absorption and noise reduction, its volume must be increased, so In the application of electronic and electrical products, only by designing a larger product structure can electronic products achieve ult...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is mainly to provide a high-specific-gravity rubber with a specific gravity of 5.2-5.5 grams per cubic millimeter and a preparation method thereof, so as to solve the problem that the natural rubber and ordinary high-specific-gravity rubber currently on the market cannot meet the needs of electronic and electrical products with small volume and shock absorption. Demand for high noise reduction performance