Double-componentwater-swelling cement gum and application thereof

A water-swelling, two-component technology, used in adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the problem of poor plasticity, long curing time, and impermeability can not meet the requirements of waterproof and moisture-proof And other issues

Active Publication Date: 2020-11-17
中电保力(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 moistu...

Method used

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  • Double-componentwater-swelling cement gum and application thereof
  • Double-componentwater-swelling cement gum and application thereof
  • Double-componentwater-swelling cement gum and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0069] Take 20g of bentonite, soak it in 50mL of 65wt% HCl for 2h, take it out and wash it to neutrality, add it to 5wt% KH-570 ethanol solution after drying, heat it to 80°C under stirring conditions, react for 30h, cool to room temperature, Suction filtration and drying to obtain bentonite modified by silane coupling agent.

preparation example 2

[0071]Take 20g of Kunlun 52# ​​paraffin and heat it to above 60°C, liquefy the paraffin, put it into 50mL of 30wt% hydrogen peroxide, stir and react at 40°C for 15min, quickly transfer it to an ice-water bath and cool to room temperature, the paraffin is condensed into particles, filtered, and washed with water to medium After that, the surface hydroxyl-modified paraffin wax was put into a vacuum drying oven and dried at 25-30 °C to obtain modified paraffin wax 1. After testing, the number of hydroxyl groups on the surface of the modified paraffin wax obtained was 0.132 mmol / g.

preparation example 3

[0073] Other methods and conditions are the same as those in Preparation Example 2, except that the reaction time is 20 min, and the modified paraffin 2 is obtained, and the number of surface hydroxyl groups of the obtained modified stone 2 is 0.164 mmol / g.

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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...

Claims

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Application Information

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IPC IPC(8): C09J175/08C09J11/04C09J11/08C10G73/38C08G18/64C08G18/48C08G18/58C08G18/24C08G18/18
CPCC08G18/10C08G18/18C08G18/242C08G18/48C09J11/04C09J11/08C09J175/08C10G73/38C08K13/06C08K9/06C08K9/02C08K3/346C08K7/26C08G18/58C08G18/64
Inventor 袁振王宏伟郭子慧王少华张海凤王宇川
Owner 中电保力(北京)科技有限公司
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