Process for producing ageing-resistant tire bladder sizing material

Abstract

The invention discloses a process for producing an ageing-resistant tire bladder sizing material. The process comprises the steps of (1) respectively weighing chlorinated butyl rubber and chloroprene rubber, adding the rubber into an internal mixer, mixing for 1-1.5 minutes, then adding butyl rubber, performing primary mixing, adding zinc oxide, microcrystalline wax and carbon black after 2-3 minutes, mixing for 3-5 minutes, adding castor oil, mixing, discharging the rubber after 3-4 minutes, and performing open mixing; (2) filtering the primary mixed rubber in a rubber filter; (3) adding the filtered mother rubber into the internal mixer, performing secondary mixing, adding a vulcanizing agent after mixing for 1-2 minutes, and discharging the rubber after 1-2 minutes; (4) extruding the secondary mixed rubber into a shape required by a die pressing vulcanizing machine or an injection vulcanizing machine by adopting a cold feed extruder. The process disclosed by the invention is improved from the formula and the production process, so that the production efficiency of bladders is greatly improved, the problems of surface cracking, seam allowance cracking and short service life of a finished product under severe use conditions are solved, the qualification rate of the bladder product is greatly improved, and the service life of the bladder product is greatly prolonged.

Description

technical field [0001] The invention relates to the field of tire bladder production technology, in particular to a production technology of aging-resistant tire bladder rubber material. Background technique [0002] The traditional tire bladder production process usually only uses chlorinated butyl rubber or neoprene as the active agent, but the tire bladder produced by the above process has the same physical properties, flex resistance, and aging resistance as the similar products at home and abroad. There is still a big gap in the products. Due to the harsh conditions of use of tire curing bladders (high temperature, certain pressure, repeated flexing and stretching, oxidation), the products are required to have high temperature resistance, oxidation resistance, high strength, high elongation, and low permanent tearing. Deformation and other technical performance, but the technical performance of the tire bladder produced by the existing process is still not up to the req...

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned defects, the present invention provides a production process of an aging-resistant tire capsule compound with simple process, convenient operation, low cost and high product technical indicators. It has made significant improvements in terms of formula and production process, greatly improving the production of capsules. Efficiency, and solve the problem of surface cracks and slit cracks in the finished product under harsh use conditions, which greatly improves the qualified rate and life of the finished capsule