Gas blocking agent and preparing method and application thereof

Abstract

The invention discloses a gas blocking agent and a preparing method and application thereof. The main component of the gas blocking agent is modified calcium carbonate. The gas blocking agent is a novel material formed in the manner that the surface of the superfine calcium carbonate is processed by a coupling agent and a dispersing auxiliary. The gas blocking agent has a slabbed structure and is high-quality fine-layer sheet structure powder. The preparing method is simple, raw materials are easy to obtain, and cost is low. The gas blocking agent is applied to tire air impervious liner sizing materials. The physical performance of the sizing materials is hardly affected after 10-40 parts of gas blocking agent is added to the air impervious liner sizing materials, bubbles are obviously reduced during attachment, cord fabric and the air impervious liner sizing materials can be bonded very well, the lamination processing performance is improved, and due to the fact that the gas blocking agent is added to the air impervious liner, the air impermeability of a finished inner tube can be improved, and the sizing material cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a gas barrier and its preparation method and application. Background technique [0002] For airtight rubber materials, the most important thing at present is to reduce costs without affecting other properties, and the main way to reduce costs is to reduce the amount of BIIR and / or increase fillers with gas barrier properties; in rubber, airtightness The best is butyl rubber and its modified products, so it is a way to chemically modify butyl rubber to obtain other types of modified butyl rubber to break the monopoly of BIIR, but there is no such improvement in the market at present. Sexual products can completely replace BIIR; the current varieties of fillers with gas barrier properties include mica, calcium carbonate, coal powder, etc. Their introduction can reduce the gas permeability of the tire and reduce the cost, but the flexibility of the inner liner will decrease Reduced,...

AI Technical Summary

Problems solved by technology

[0002] For airtight rubber materials, the most important thing at present is to reduce costs without affecting other properties, and the main way to reduce costs is to reduce the amount of BIIR and / or increase fillers with gas barrier properties; airtightness in rubber The best is butyl rubber and its modified products, so it is a way to chemically modify butyl rubber to obtain other types of modified butyl rubber to break the monopoly of BIIR, but there is no such improvement in the market at present. Non-toxic products can completely replace BIIR; the current varieties of fillers with gas barrier properties include mica, calcium carbonate, coal powder, etc. Their introduction can reduce the gas permeability of the tire and reduce costs, but the flexibility of the inner liner will be affected. Reduced, thereby affecting the service life of the tire

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