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Low-viscosity and low-toxicity epoxy resin grouting material and preparation method thereof

An epoxy resin grouting and epoxy resin technology, which is applied in the field of low viscosity and low toxicity epoxy resin grouting material and its preparation, can solve problems such as environmental hazards, and achieve high permeability, high curing speed at room temperature, and low shrinkage rate. Effect

Inactive Publication Date: 2017-09-22
ZHENGZHOU SINO SINA BUILDING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The epoxy-furfural-acetone system is a commonly used modified epoxy resin grouting material. This system has excellent properties such as good permeability, high adhesion, and strong corrosion resistance, and has been widely used in related engineering fields. The system contains 20-40% furfural with moderate toxicity, causing great harm to the environment

Method used

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  • Low-viscosity and low-toxicity epoxy resin grouting material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0014] 30g of furfural and 20g of acetone are catalyzed by 0.2g of saturated ammonia water, the catalytic temperature is 80°C, and the reaction time is 8h to generate furfurylidene acetone resin. After the reaction is complete, add 100g of epoxy resin and keep stirring evenly. Add 6g of carboxyl-terminated liquid nitrile rubber, 2g of DMP-30, 1g of non-ionic surfactant, continue to stir, and finally add 40g of diethyltoluenediamine, stir well to obtain a low-viscosity and low-toxicity ring Epoxy resin chemical grouting materials, the test results of the obtained low-viscosity and low-toxicity epoxy resin chemical grouting materials are shown in Attached Table 1.

Embodiment 2

[0016] 35g of furfural and 23g of acetone are catalyzed by 0.25g of saturated ammonia water, the catalytic temperature is 90°C, and the time is 9h, the reaction produces furfurylidene acetone resin. After the reaction is complete, add 100g of epoxy resin, and keep stirring evenly, and add Add 4g of carboxyl-terminated liquid nitrile rubber, 4g of dimethyl phthalate, 1.5g of DMP-30, 1g of nonionic surfactant, continue stirring, and finally add 20g of diethyltoluenediamine 15g of diaminodiphenyl sulfone was stirred evenly to prepare a low-viscosity and low-toxicity epoxy resin chemical grouting material. The test results of the obtained low-viscosity and low-toxicity epoxy resin chemical grouting material are shown in Attached Table 1 for details.

Embodiment 3

[0018] 30g of furfural and 20g of acetone are catalyzed by 0.2 saturated ammonia water, the catalytic temperature is 90°C, and the time is 11h, and the reaction produces furfurylidene acetone resin. After the reaction is complete, add 100g of epoxy resin and continue to stir evenly. Add 2g of carboxyl-terminated liquid nitrile rubber, 1g of dimethyl phthalate, 1.5g of DMP-30, 1.3g of nonionic surfactant, continue stirring, and finally add 20g of diethyltoluenediamine , 25g of diaminodiphenyl sulfone was stirred evenly to prepare low-viscosity and low-toxicity epoxy resin chemical grouting material, and the test results of the obtained low-viscosity and low-toxicity epoxy resin chemical grouting material are shown in Attached Table 1 for details.

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Abstract

The invention relates to a low-viscosity and low-toxicity epoxy resin grouting material and a preparation method thereof. The preparation method comprises: carrying out a reaction on furfural and acetone under the catalysis of saturated ammonia water to produce a furfuralacetone resin, adding an epoxy resin after the reaction is completely performed, continuously and uniformly stirring, adding a toughening agent, an accelerator, a surfactant and a composite amine curing agent to the system, continuously stirring, finally adding a composite amine curing agent, and uniformly stirring to prepare the low-viscosity and low-toxicity epoxy resin grouting material. According to the present invention, the low-viscosity and low-toxicity epoxy resin grouting material has the characteristics of high adhesion and strong corrosion resistance of the ordinary epoxy-furfural-acetone system resin material, and further has advantages of high permeability, environmental protection, low toxicity, high elastic modulus, low shrinkage, high room-temperature curing rate and the like, and can used for wet base surface construction.

Description

technical field [0001] The invention relates to the technical field of epoxy resin grouting materials, in particular to a low-viscosity and low-toxicity epoxy resin grouting material and a preparation method thereof. Background technique [0002] Epoxy resin has been widely used in various fields due to its excellent comprehensive performance and the variability of its formulation. However, due to the inherent net brittleness of epoxy resin, high elastic modulus, and low elongation, when subjected to internal stress or external mechanical stress, it will quickly form a defect area and expand into cracks, resulting in cracking of the cured product. Therefore, in most practical formulations, it is necessary to modify the epoxy resin to improve its mechanical properties by making it more flexible and tougher. The modification of epoxy resin is particularly important in the field of chemical grouting. [0003] The epoxy-furfural-acetone system is a commonly used modified epoxy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L61/02C08L13/00C08K5/18C08K5/41C08G6/02
CPCC08L63/00C08G6/02C08L2205/03C08L61/02C08L13/00C08K5/18C08K5/41
Inventor 董连成王学振李伟郭宗林姬俊杰
Owner ZHENGZHOU SINO SINA BUILDING MATERIALS CO LTD