Modified mesoporous molecular sieve/hydrophilic expansion waterproof rubber sealing material and preparation method thereof

Abstract

The invention provides a modified mesoporous molecular sieve / hydrophilic expansion waterproof rubber sealing material and a preparation method thereof. The modified mesoporous molecular sieve / hydrophilic expansion waterproof rubber sealing material is prepared from the following raw materials in parts by weight: 100 parts of butadiene-acrylonitrile rubber, 8-12 parts of mesoporous molecular sieves, 5-9 parts of graphene, 15-25 parts of bentonite-calcium carbonate microspheres, 10-16 parts of SAP resin, 8-12 parts of tackifying resin, 1-3 parts of stearic acid, 4-6 parts of N-phenyl-beta-naphthylamine and 1-3 parts of a silane coupling agent. The modified mesoporous molecular sieve / hydrophilic expansion waterproof rubber sealing material has the advantages that the mesoporous molecular sieves are added, so that modified hydrophilic expansion rubber has relatively high chemical stability while keeping water absorption to be constant; besides, the modified mesoporous molecular sieve / hydrophilic expansion waterproof rubber sealing material has the advantages of high strength, durability and reusability due to synergistic effect of graphene and the mesoporous molecular sieves.

Description

technical field [0001] The invention relates to the field of polymer sealing materials, in particular to a modified mesoporous molecular sieve / water-swellable waterproof rubber sealing material and a preparation method thereof. Background technique [0002] Water Swelling Rubber (WSR for short) is a new functional polymer material developed by Japan in the late 1970s. After absorbing water, it can expand to several times or even hundreds of times its own weight or volume. When it encounters water, it can absorb water to expand its volume and generate a large expansion pressure. Ability. The characteristics of water absorption and expansion make the material play a role of water-stop within the effective volume expansion range. Compared with traditional pressure sealing materials, it not only has the sealing effect of conventional water-stop materials, but also can effectively fill the gap when the building joint is deformed. It plays the role of water-stopping, and is prai...

AI Technical Summary

Problems solved by technology

Chinese patent CN 101983980 A provides a method for preparing water-swellable rubber with mesoporous molecular sieves. Water-swellable rubber composite products are prepared through direct mixing and vulcanization of water-swellable rubber and mesoporous molecular sieves. Although the formed water-swellable rubber has good The water absorption rate is high, but there are still deficiencies in strength, durability, compatibility, etc.