Process for preparing water soluble epoxy resin grouting agent

A technology for water-based epoxy resin and grouting material, which is applied in the field of preparation of new water-based epoxy resin grouting materials, can solve the problems of poor epoxy curing, and no water-based epoxy resin grouting material has been developed, and is beneficial to environmental protection and durable. The effect of good performance and cost reduction

Inactive Publication Date: 2005-03-16
GUANGZHOU CHEM GROUTING CO LTD CAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the shortcomings of strong hydrophobicity, the modification method is mainly to add a hydrophilic agent to the slurry to increase the hydrophilicity of the slurry, but the problem of poor curing of epoxy in a humid environment and in water has not been fundamentally resolved.
The research on water-based epoxy resin started in the 1980s in China. Unfortunately, it only involved the fields of coatings and adhesives, and water-based epoxy resin slurry for grouting has not yet been developed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 1. Synthesis of Waterborne Epoxy Resin

[0051]In a four-neck flask equipped with nitrogen, stirring and temperature control devices, add 93g of itaconic acid and 24g of n-butanol, heat up to 90°C, add 0.88g of benzyltriethylammonium chloride and 0.22g of p-hydroxybenzene Methyl ether, add 147g of epoxy resin E-44 dropwise, keep the temperature between 90-94°C, drop it within 2h, then control the temperature at 100-110°C, and react for another 3h.

[0052] Cool down to 50°C, add 60g of ammonia water for neutralization, fully stir for 1.5h, then add 101.6g of deionized water, and then vigorously stir for 1h to prepare a water-based epoxy resin solution with a concentration of 60%.

[0053] 2. Preparation of water-based epoxy grouting material

[0054] Get the aqueous epoxy resin solution 100g that makes in the above steps, add water 39g, N,N'-methylenebisacrylamide 5g, ammonium persulfate 4.5g, triethanolamine 4.5g, methacryloyloxyethyltris Mix 11g of methyl ammonium c...

Embodiment 2

[0057] 1. Synthesis of Waterborne Epoxy Resin

[0058] In a four-necked flask equipped with nitrogen, stirring and temperature control devices, add 89g of itaconic acid and 32g of ethylene glycol monobutyl ether, heat up to 90°C, add 0.8g of tetraethylammonium chloride and 0.21g of p-phenylene Diphenol, add 127g of epoxy resin E-51 dropwise, keep the temperature between 92-96°C, drop it within 1.5h, then control the temperature at 100-110°C, and react for another 3h.

[0059] Cool down to 40°C, add 52g of ammonia water for neutralization, fully stir for 1.5h, then add 81.8g of deionized water, and then vigorously stir for 1h to prepare a water-based epoxy resin solution with a concentration of 60%.

[0060] 2. Preparation of water-based epoxy grouting material

[0061] Get the aqueous epoxy resin solution 100g that makes in the above steps, add water 85g, N, N'-methylenebisacrylamide 5g, potassium persulfate 5g, triethanolamine 4.5g, methacryloyloxyethyltrimethyl Ammonium ch...

Embodiment 3

[0064] 1. Synthesis of Waterborne Epoxy Resin

[0065] Add 93g of itaconic acid and 22g of cyclohexanone into a four-neck flask equipped with nitrogen, stirring and temperature control devices, heat up to 90°C, add 0.86g of tetraethylammonium chloride and 0.24g of p-butylphthalene For phenol, add 127g of epoxy resin E-51 dropwise, keep the temperature between 90-96°C, finish the drop within 1.5h, then control the temperature at 100-110°C, and react for another 4h.

[0066] Cool down to 40°C, add 70g of dimethylethanolamine for neutralization, fully stir for 1.5h, then add 171.3g of deionized water, and then vigorously stir for 1h to prepare a 60% aqueous epoxy resin solution.

[0067] 2. Preparation of waterborne epoxy resin slurry

[0068] Get the aqueous epoxy resin solution 100g that makes in the above steps, add water 119.7g, N, N'-methylenebisacrylamide 4.8g, ammonium persulfate 4.5g, triethanolamine 4.5g, methacryloyloxyethyl Dimethyl ammonium chloride (DMC) 11g, stir ...

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Abstract

The invention relates to a process for preparing water soluble epoxy resin grouting agent which consists of, introducing carboxyl radicals onto the molecular matrix of the epoxy resin, preparing water-based epoxy resin by neutralizing with neutralization agent, introducing double bonds to both ends of the molecular chain, employing water-soluble redox initiation system to produce water non-soluble gel through radical polymerization reaction. The invention can be applied to realize epoxide aquosity.

Description

technical field [0001] The invention relates to a preparation method of a novel water-based epoxy resin grouting material. Background technique [0002] Organic polymer grouting materials developed rapidly in the 1960s, and a series of grouting materials with different properties appeared. Most of the polymer chemical grout materials currently used have a certain degree of toxicity, which is easy to pollute the environment and endanger human health. Research and development of new pollution-free and pollution-free green grout materials is an inevitable trend in the development of chemical grout materials. [0003] Epoxy resin grout has the advantages of high strength, strong adhesion, and good chemical resistance, and is the most commonly used grout for consolidation grouting. However, the main defects of the grout as a grouting material are its high viscosity, low groutability, strong hydrophobicity, and poor adhesion to wet cracks. In addition, most of the curing agents a...

Claims

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Application Information

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IPC IPC(8): C08K5/17C08L63/02
Inventor 石红菊张亚峰葛家良申景强
Owner GUANGZHOU CHEM GROUTING CO LTD CAS
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