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Epoxy resin crack pouring adhesive for repairing cement concrete cracks and preparation method of epoxy resin crack pouring adhesive

A technology of cement concrete and water-based epoxy resin, applied in the direction of epoxy resin glue, adhesive, monocarboxylic acid ester copolymer adhesive, etc., can solve the problems of low elongation, cracking, low bonding strength, etc. adhesive effect

Pending Publication Date: 2021-12-31
山西凝固力新型材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Epoxy resin material has strong adhesion, flexible and diverse curing formula design, high strength after curing, and high bonding strength, but epoxy resin material is brittle and has low elongation, so it needs to be modified in structure or performance
[0005] The bonding strength between simple cement-based crack repair materials and the surface to be repaired is not high, and there are also cases of self-cracking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] An epoxy resin joint glue for repairing cement concrete cracks

[0045] Its composition and content are in parts by mass:

[0046] Component A: 20 parts of water-based epoxy resin emulsion, 5 parts of water-based polyurethane, 5 parts of acrylate emulsion, 30 parts in total;

[0047] Component B: 20 ​​parts of water-based epoxy curing agent, 2 parts of talcum powder, 0.2 parts of silane coupling agent, 0.2 parts of ultraviolet absorber, 24 parts of ultrafine cement, 12.3 parts of self-repairing microspheres, 1.2 parts of cement expansion agent, defoaming 0.1 part of dose, a total of 60 parts;

[0048] Component C: 5 parts of water;

[0049] Wherein the self-healing microspheres are prepared according to the following steps:

[0050] The first step: preparation of self-healing microsphere core material:

[0051] Weigh 6 parts of superabsorbent resin, 3.9 parts of superfine cement, and 0.1 part of silane coupling agent, mix and stir evenly, and obtain self-repairing m...

Embodiment 2

[0072] An epoxy resin joint glue for repairing cement concrete cracks

[0073] Its composition and content are in parts by mass:

[0074] Component A: 21.5 parts of water-based epoxy resin emulsion, 4.5 parts of water-based polyurethane, 4 parts of acrylate emulsion, 30 parts in total;

[0075] Component B: 21.5 parts of water-based epoxy curing agent, 1.8 parts of talcum powder, 0.2 parts of silane coupling agent, 0.2 parts of ultraviolet absorber, 23.5 parts of ultrafine cement, 11.5 parts of self-repairing microspheres, 1.2 parts of cement expansion agent, 0.1 part of foaming agent, 60 parts in total;

[0076] Component C: 7 parts of water;

[0077] Wherein the self-healing microspheres are prepared according to the following steps:

[0078] The first step: preparation of self-healing microsphere core material:

[0079] Weigh 5.5 parts of superabsorbent resin, 4.4 parts of superfine cement, and 0.1 part of silane coupling agent, mix and stir evenly, and obtain self-repa...

Embodiment 3

[0100] An epoxy resin joint glue for repairing cement concrete cracks

[0101] Its composition and content are in parts by mass:

[0102] Component A: 22.5 parts of water-based epoxy resin emulsion, 4 parts of water-based polyurethane, 3.5 parts of acrylate emulsion, 30 parts in total;

[0103] Component B: 22.5 parts of water-based epoxy curing agent, 1.5 parts of talc powder, 0.1 part of silane coupling agent, 0.1 part of ultraviolet absorber, 23 parts of ultrafine cement, 11.6 parts of self-repairing microspheres, 1.1 parts of cement expansion agent, 0.1 part of foaming agent, 60 parts in total;

[0104]Component C: 8 parts of water;

[0105] Wherein the self-healing microspheres are prepared according to the following steps:

[0106] The first step: preparation of self-healing microsphere core material:

[0107] Weigh 5 parts of superabsorbent resin, 4.9 parts of superfine cement, and 0.1 part of silane coupling agent, mix and stir evenly, and obtain self-repairing mic...

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Abstract

The invention belongs to the technical field of cement concrete crack repairing, and particularly relates to epoxy resin crack pouring adhesive for repairing cement concrete cracks and a preparation method of the epoxy resin crack pouring adhesive. According to the technical scheme, a component A comprises the following components in parts by weight: 20-25 parts of waterborne epoxy resin emulsion, 3-5 parts of waterborne polyurethane and 2-5 parts of an acrylate emulsion; a component B comprises the following components in parts by weight: 20-25 parts of a waterborne epoxy curing agent, 1-2 parts of talcum powder, 0.1-0.2 part of a silane coupling agent, 0.1-0.2 part of an ultraviolet light absorber, 22-24 parts of superfine cement, 10.7-12.3 parts of self-repairing microspheres, 1.0-1.2 parts of a cement expanding agent and 0.1 part of a defoaming agent, and the total parts by weight is 60; and a component C: 5-10 parts of water; and the self-repairing microspheres are composed of super absorbent resin wrapped by silicon resin, superfine cement and a silane coupling agent. The pouring adhesive is an organic / inorganic composite crack repairing material which is formed by compounding waterborne epoxy resin and superfine cement and has a self-repairing function.

Description

technical field [0001] The invention belongs to the technical field of repairing cement concrete cracks, and relates to an epoxy resin joint glue for repairing cement concrete cracks and a preparation method thereof. Background technique [0002] Cement concrete is composed of stone, sand, hydrate gel, and hydration crystals. The distribution of its various components is disordered, without any rules at all. During concrete mixing and construction, pores, capillary pores, dry shrinkage cracks, temperature shrinkage cracks, and carbonation shrinkage cracks will occur. During the pouring and vibrating process of concrete, after the slurry at the bottom leaks to the base layer, the cement slurry around the aggregate decreases, and the filling density decreases. At the same time, during the setting process of cement concrete, the occurrence of bleeding causes more water to accumulate around the coarse aggregate to form a water film, which becomes the weakest area of ​​the ceme...

Claims

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Application Information

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IPC IPC(8): C09J163/00C09J175/04C09J133/04C09J125/14C09J131/04C09J11/04C09J11/06C09J11/08
CPCC09J163/00C09J11/04C09J11/06C09J11/08C08L75/04C08L33/04C08L43/04C08L25/14C08L31/04C08L101/025C08L83/04C08K3/34C08K3/013C08K5/5435C08K9/10
Inventor 李万捷王建中范福洋毛宇杰王瑞王千雅薄鸿鹏常澔男王涛柴亚跃
Owner 山西凝固力新型材料股份有限公司
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