1:1 type plugging epoxy grouting material as well as preparation method and application thereof

A grouting material and leaking epoxy technology, which is applied in the field of waterproofing and plugging, can solve the problems of repeated leakage and high brittleness of the consolidated body.

Inactive Publication Date: 2018-06-29
广东铁科灌浆科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the consolidated body of these materials is brittle and cannot buffer the expansion and displacement of cracks caused by geological factors, thermal expansion and contraction at the defective part while plugging leaks, resulting in leak plugging in construction, rail transit, etc. It is easy to leak repeatedly due to secondary cracking caused by crack expansion or shrinkage. It can only treat the symptoms but not the root cause. It is not an ideal waterproof plugging material

Method used

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  • 1:1 type plugging epoxy grouting material as well as preparation method and application thereof
  • 1:1 type plugging epoxy grouting material as well as preparation method and application thereof

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preparation example Construction

[0031] The preparation method of the above-mentioned 1:1 type leak-stopping epoxy grouting material according to an embodiment of the present invention includes the following steps S1-S2:

[0032] S1. Mix the amine curing agent, viscosity diluent and modifier and stir evenly. After reflux reaction for 3-5 hours, add the remaining raw materials of component B and stir evenly to obtain component B.

[0033] In one embodiment, an amine curing agent is added to the reaction kettle, the modifier is slowly added dropwise under stirring, and the viscosity diluent is slowly added at the same time, and the reaction is carried out under reflux for 3 to 5 hours. After the reaction is complete, the remaining B The raw materials of components are stirred for 0.5 to 1.5 hours to obtain component B.

[0034] S2. Mix bisphenol A epoxy resin, novolac epoxy resin and additives and stir evenly to obtain component A.

[0035] The preparation method of this embodiment has a simple process and is ...

Embodiment 1

[0040] Add 100g of diethylenetriamine into a three-port reaction kettle with a condensing reflux pipe and an agitator, slowly drop in 50g of bisphenol A epoxy resin E51 and 15g of benzyl alcohol while stirring at room temperature, and reflux for 3 hours. After the kettle returned to room temperature, add 3g of 2-phenylimidazole and tris-(dimethylaminomethyl)phenol, and 3g of silane coupling agent 3-glycidyl propyl trimethoxysilane, continue to stir for 1 hour to obtain B components.

[0041] In an open reaction kettle, add 100g of bisphenol A epoxy resin E51, 15g of liquid phenol novolac epoxy resin, 30g of reactive diluent benzyl glycidyl ether and 2g of defoamer at room temperature, and stir well Obtain the A component.

[0042] When in use, mix component A and component B uniformly according to the mass ratio of 1:1, and solidify in water at room temperature for 28 days to form a consolidated body.

Embodiment 2

[0044] Add 100g of triethylenetetramine in a three-port reaction kettle with a condensing reflux pipe and an agitator, and slowly drop in 40g of bisphenol A epoxy resin E44 and 15g of benzyl alcohol while stirring at room temperature, and reflux for 5 hours. After the kettle returned to room temperature, add 3g of 2-phenylimidazole and tris-(dimethylaminomethyl)phenol, and 3g of silane coupling agent 3-glycidyl propyl trimethoxysilane, continue to stir for 1 hour to obtain B components.

[0045] In an open reaction kettle, add 100g of bisphenol A epoxy resin E51, 20g of liquid phenol novolac epoxy resin, 30g of reactive diluent benzyl glycidyl ether and 2g of defoamer at room temperature, and stir well Obtain the A component.

[0046] When in use, mix component A and component B uniformly according to the mass ratio of 1:1, and solidify in water at room temperature for 28 days to form a consolidated body.

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Abstract

The invention relates to a 1:1 type plugging epoxy grouting material as well as a preparation method and application thereof. The epoxy grouting material is prepared from a component A and a componentB, wherein the component A is mainly prepared from the following raw materials in parts by mass: 50-100 parts of bisphenol A type epoxy resin, 10-20 parts of liquid phenolic epoxy resin and 5-33 parts of additives; the component B is mainly prepared from the following raw materials in parts by mass: 50-100 parts of an amine curing agent, 5-15 parts of a viscosity diluent, 10-200 parts of a modifying agent, 0-3 parts of an accelerant and 0-3 parts of a silane coupling agent, wherein the modifying agent is at least one of glycidyl ether and epoxy resin. According to the preparation method, theglycidyl ether and / or the epoxy resin are / is enabled to react with active hydrogen of the amine curing agent for modifying, so that the curing agent is endowed with better toughness and good water resistance, and the brittleness of a consolidated body is also correspondingly reduced; therefore, the problems that the epoxy resin consolidated body is high in brittleness when being used as a groutingmaterial and easily cracks for the second time when a crack is enlarged or contracted, and the curing effect of the amine curing agent in water is poor are solved.

Description

technical field [0001] The invention relates to the field of waterproof plugging, in particular to a 1:1 type leak plugging epoxy grouting material and its preparation method and application. Background technique [0002] In recent years, the country has invested heavily in infrastructure, and the construction of buildings, rail transit, highways, and tunnels has also developed by leaps and bounds. This is bound to be accompanied by the continuous improvement of infrastructure construction standards and technical requirements. The technical standards of corresponding construction materials and maintenance materials have been continuously improved. [0003] At present, when there is water leakage in buildings, rail transit, highways, tunnels, etc., polymer cement, acrylate, acrylic, polyurethane, etc. are mostly used as grouting materials for waterproof plugging. The plugging principle of these materials is that the material itself has a certain Water absorption swelling fun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08G59/50C08G59/62
CPCC08G59/5006C08G59/5026C08G59/5033C08G59/623C08L63/00C08L2205/025
Inventor 盛乔灵郑祥安
Owner 广东铁科灌浆科技有限公司
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