Double-componentwater-swelling cement gum and application thereof

Abstract

The invention provides double-component water-swelling cement gum, which is composed of a component A and a component B. The component A comprises the following raw materials: polyether polyol, isocyanate, surface hydroxyl modified paraffin, epoxy resin, an epoxy diluent, a thickener and a solid filler. The component B is prepared from the following raw materials: polyether polyol, water-absorbentresin, a catalyst, a chain extender, surface hydroxyl modified paraffin, a thickener and a solid filler; wherein the solid filler comprises bentonite modified by a silane coupling agent. According tothe invention, paraffin with certain hydroxyl on the surface is introduced into the two components, so that certain surface lubricity is provided, and a product does not stick to hands of operators during kneading; good weather resistance is realized in various environments. The water-absorbent resin and the silane coupling agent modified bentonite synergistically play a role, so that the bondingstrength between the cement gum and a wall surface is enhanced, and a three-dimensional waterproof sealing effect is formed on a bonding interface, and waterproof and moistureproof effects are betterfacilitated.

Description

technical field [0001] The invention belongs to the field of polymer functional materials, in particular to a two-component water-absorbing swelling cement and its application. Background technique [0002] In the field of construction, it is necessary to carry out waterproof and leak-proof treatment on walls, especially basements, or buildings in humid weather in the south. Since the concrete itself has interconnected capillary pores during construction, the water in the groundwater or the air will slowly penetrate into the interior of the building through these capillary pores, causing the wall surface to crack and fall off. In particular, the general power distribution room is generally located in the basement in a high-humidity and high-temperature environment, and water seepage and leakage often occur. For the protection of electrical components, higher requirements are placed on waterproof materials. And the particularity of the waterproof material in the basement is...

AI Technical Summary

Problems solved by technology

[0014] In order to overcome the defects in the prior art that the waterproof material for the backwater surface of the basement cannot meet the requirements, has poor toughness, poor plasticity, poor bond strength, impermeability that cannot meet the waterproof and moisture-proof requirements, long curing time, and complicated steps in application, The invention provides a polymer cement based on epoxy resin modified polyurethane. For seams and repairs, the two-component product can be directly kneaded by hand according to a certain mass ratio

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