Water swellable rubber and production method thereof

Abstract

The invention discloses a water swellable rubber which comprises the following components: 32.9-40.2wt% of chloroprene rubber, 40.2-42.8wt% of water soluble polyurethane, 8.0-8.2wt% of reinforcing filling agent, 2.4-3.0wt% of curing agent, 0.4-1.0wt% of accelerating agent, 2.8-3.9wt% of processing aid, 3.2-3.9wt% of dehumidifying and defoaming agent, 0.8-1.0wt% of anti-aging agent, 1.2-2.3wt% of zinc oxide and 0.6-1.0wt% of magnesium oxide. The invention also discloses a production method of the water swellable rubber, which comprises the following steps: mixing raw materials; putting the mixture into an extruder to be extruded; and finally, putting the extruded mixture into a microwave vulcanizing machine to be vulcanized and molded. The invention has the following positive progressive effects: the water swellable rubber disclosed by the invention is a novel material and has excellent water absorption performance; the continuous extrusion microwave-vulcanizing process is adopted in the production method, so that the production method has the advantages of fewer processing procedures (elimination of trimming procedure), economization of manpower and raw materials, and the like; and the invention has stable product quality, high yield and high working efficiency, is suitable for large-batch production, and has good application prospects in the water swellable rubber field.

Description

technical field [0001] The invention relates to a water-swellable rubber, in particular to a water-swellable rubber and a production method thereof. Background technique [0002] Water-swellable rubber is a type of special rubber that has dual characteristics of rubber elasticity and water-swellability. It can absorb water and retain water while maintaining high elasticity and resistance to compression deformation. The use of this kind of material can solve the sealing problems such as the permanent deformation of the rubber and the shrinkage of the cement material caused by the shrinkage of the material. At the same time, because this kind of material has good infiltration and adhesion with polar surface materials such as asphalt, plastic, rubber, etc., as well as non-polar surface materials such as cement mortar and reinforced cement, it is suitable for tunnels, subways, culverts, buildings, underground It is one of the ideal mosaic materials for engineering, offshore oil...

AI Technical Summary

Problems solved by technology

[0005] At the same time, the current domestic production of water-swellable rubber products is produced and processed by a flat vulcanizing machine, one die after another, by intermittent molding, which is backward in processing technology, low in output and low in efficiency

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