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High-strength water-based itaconic acid epoxide resin grouting material and preparation method thereof

A technology of itaconic acid epoxy resin and itaconic acid epoxy ester, which is applied in the direction of chemical instruments and methods, and other chemical processes, can solve the problems of low mechanical strength of the consolidated body, limited application, and low overall strength of the material

Inactive Publication Date: 2008-01-02
GUANGZHOU CHEM GROUTING CO LTD CAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When preparing water-based epoxy resin grouting materials in this patent, the curing agent adopts a water-soluble initiating reduction system, which can quickly initiate the curing of the grout under the condition of water, but it is prone to occur during the chain growth process The chains are terminated, resulting in a polymer with a lower molecular weight and therefore less overall strength of the material
[0007] Fourth, the mechanical strength of the consolidated body is low
The compressive strength of this material is only 0.65-4.5Mpa, and it cannot be used for reinforcement in the field of grouting, but can only be used for water blocking, which also limits the application of this kind of water-based epoxy in the field of grouting

Method used

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  • High-strength water-based itaconic acid epoxide resin grouting material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] (1) Preparation of neutralized waterborne epoxy itaconate resin

[0069] In a 1000ml four-neck flask equipped with nitrogen, a stirring device and a thermometer, add 139.2g itaconic acid and 120g hydroxyethyl methacrylate, add 1.52g benzyl triethylammonium chloride and 0.42g hydroquinone, When heating up to 85°C, add 200g of E-51 epoxy resin in portions, keep the constant temperature at 110°C after adding, react for 2h, and stop the reaction when the measured acid value reaches 80 mg / g.

[0070] Lower the temperature to 60° C., add DMAM for neutralization, stir well, then add 200 g of methyl methacrylate for dilution, and stir well to obtain a water-based itaconic acid epoxy resin.

[0071] (2) Preparation of epoxy resin grouting material

[0072] Take 100g of the above resin, add 1.2g of cobalt isooctanoate, add 6g of tripropylene glycol dimethacrylate, add 2.6g of methyl ethyl ketone peroxide, and mix evenly to form the grouting material.

[0073] After the material w...

Embodiment 2

[0075] (1) Preparation of neutralized waterborne epoxy itaconate resin

[0076] In a 1000ml four-neck flask equipped with nitrogen, a stirring device and a thermometer, add 100g of itaconic acid and 50g of hydroxyethyl methacrylate, add 1.09g of benzyl triethylammonium chloride and 0.30g of hydroquinone, and heat When the temperature was raised to 85°C, 143.7g of E-51 epoxy resin was added in portions. After the addition, the constant temperature was maintained at 115°C, and the reaction was carried out for 3 hours. The reaction was stopped when the measured acid value reached 200 mg / g.

[0077] Lower the temperature to 60°C, add DMAM for neutralization, stir well, then add 140g MMA and 70g HEMA to dilute, then add 140g water and stir well to obtain a water-based itaconic acid epoxy resin.

[0078] (2) Preparation of epoxy resin grouting material

[0079] Take 100g of the above resin, add 1.8g of cobalt isooctanoate, add 6g of tripropylene glycol dimethacrylate, add 3.6g of m...

Embodiment 3

[0082] (1) Preparation of neutralized waterborne epoxy itaconate resin

[0083] In a 1000ml four-necked flask equipped with nitrogen, a stirring device and a thermometer, add 139.2g itaconic acid and 120g hydroxyethyl methacrylate, add 1.52g benzyl triethylammonium chloride and 0.42g hydroquinone, When heating up to 85°C, add 200g of E-51 epoxy resin in portions, keep the constant temperature at 112°C after adding, react for 2.5h, and stop the reaction when the measured acid value reaches 150 mg / g.

[0084] Lower the temperature to 60°C, add DMAM for neutralization, stir well, then add 220g of MMA to dilute, then add 63g of water and stir well to obtain a water-based itaconic acid epoxy resin.

[0085] (2) Synthesis of toughening agent

[0086] In a 500ml four-neck flask equipped with nitrogen, a stirring device and a thermometer, add 87g of TDI, dropwise add N204 polyether polyol at room temperature, heat up to 50°C for 3h after dropping, then add HEMA50g dropwise at 70°C, a...

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Abstract

The invention discloses a high-strength grouting material of aqueous itaconic acid epoxy ester resin and making method, which comprises the following parts: 30-80% neutralized aqueous itaconic acid epoxy ester resin, 10-70% diluent, 0-100% water, 1-10% crosslinking agent, 0-0.1% storing stabilizer, 0-0.5% deoxidizer, 1-4% initiator, 0.5-4% accelerant and 0-2% boosting accelerant. The invention reduces the water content of grouting material to add the content of polymerisable component and increase the mechanic strength of the material, which is fit for kinds of engineering reinforcing and water shutoff course to make high-strength aqueous epoxy cement slurry through blending with cement slurry.

Description

technical field [0001] The invention relates to a grouting material, in particular to a high-strength water-based itaconic acid epoxy resin grouting material and a preparation method thereof. Background technique [0002] The application number is 200410027818.9, and the Chinese invention patent application document titled "A new type of water-based epoxy resin grouting material" discloses a new type of water-based epoxy resin grouting material. The invention reacts with itaconic acid and epoxy resin , introduce carboxyl groups on the molecular skeleton of epoxy resin, and then use a neutralizer to neutralize and form a salt, so as to realize the water-based epoxy resin. At the same time, the double bond introduced, under the redox system, undergoes free radical polymerization to form a gel . This invention better solves the water-based epoxy resin, and successfully prepares a new type of environmentally friendly grouting material that can replace water blocking materials s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/10C08L63/00C08K5/10
Inventor 张维欣张亚峰邝健政徐宇亮
Owner GUANGZHOU CHEM GROUTING CO LTD CAS
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