Production process of cushion rubber

Abstract

A production process of cushion rubber is related to the technical field of rubber and comprises the following steps: burdening: preparing materials, including, by weight: 20-30 parts of natural rubber, 16 parts of cis-butadiene rubber, 10 parts of tread reclaimed rubber, 3 parts of a toughener, 3 parts of an elastic agent, 0.2-0.8 part of calcium silicate, 1 part of zinc oxide, 0.05 part of stearic acid, 0.3 part of a plasticizer, 20 parts of an antiaging agent, and 10 parts of calcium carbonate, the toughener being polyvinyl butyral and dioctyl phthalate having an addition ratio of 2:1, and the elastic agent being butadiene copolymer, ethyl acetate and maleic anhydride having an addition ratio of 2:1.5:1; mixing: blending well the materials, and mixing in a mixer at 40 DEG C for 30 min; mold forming: forming the mixed materials with a mold, and cooling. The rubber produced herein has low price, high elasticity, high toughness, long service life and permanent deformation resistance.

Description

Technical field: [0001] The invention relates to the technical field of rubber, in particular to a production process of buffer rubber. Background technique: [0002] The loss factor of the rubber material used for shock absorption is not only related to the structure of the rubber itself, but also related to temperature and frequency. At normal temperature, the loss factor of natural rubber (NR) and butadiene rubber (BR) is small, styrene-butadiene rubber (SBR), neoprene rubber (CR), ethylene-propylene rubber (EPR), polyurethane rubber (PU) and silicone rubber The loss factor is in the middle, and the loss factor of butyl rubber (HR) and nitrile rubber (NBR) is the largest. [0003] There are generally five types of rubber materials used for shock absorption, namely NR, SBR, and BR are ordinary rubber materials; NBR is used for oil-resistant vulcanized rubber; CR is used for weather-resistant vulcanized rubber; IIR is used for high damping vulcanized rubber; Heat resistan...

AI Technical Summary

Problems solved by technology

Although NR has a small loss factor, it has the best overall performance, excellent elasticity, good fatigue resistance, low heat generation, small creep, good adhesion to metal parts, cold resistance, electrical insulation and processing performance. , so NR is widely used for shock absorption purposes, but a single type of rubber has certain weaknesses, the price of natural rubber is high, and some rubbers have a large loss factor, and some rubbers are weak and prone to permanent deformation. Some have low toughness and are easy to crack