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Environment-friendly high-performance furfural-free epoxy chemical grouting material, preparation method and application

A technology of epoxy chemistry and grouting materials, applied in chemical instruments and methods, other chemical processes, soil protection, etc., can solve the problems of volatile, construction personnel and environmental hazards, high toxicity, etc., and achieve less side reactions and less Operational control, toxicity reduction effects

Inactive Publication Date: 2012-08-01
GUANGZHOU CHEM GROUTING CO LTD CAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the biggest disadvantage of this material is the furfural in it, which is too toxic and volatile, causing great harm to construction personnel and the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042]An environment-friendly high-performance furfural-free epoxy chemical grouting material, which is prepared by the following method:

[0043] (1) Preparation of diluent

[0044] Add 21.89g of acetone and 8g of 10% sodium ethylate (SA) aqueous solution into a four-necked flask equipped with a thermometer, a constant pressure funnel, and a stirrer, stir (600r / min) at room temperature, and slowly drop in 60g benzaldehyde (i.e. n (benzaldehyde): n (acetone)=2: 1), control the speed of dripping, make benzaldehyde drop in 30min, continue to react 30min after dripping, control reaction temperature by water bath simultaneously to make The whole process temperature does not exceed 40°C.

[0045] (2) Preparation of furfural-free epoxy chemical grouting material

[0046] Mix epoxy resin E51 with diluent, stir well, then add curing agent diethylenetriamine, accelerator DMAP and plasticizer dibutyl phthalate, and mix well to get environmentally friendly high-performance furfural-fre...

Embodiment 2

[0051] An environment-friendly high-performance furfural-free epoxy chemical grouting material, which is prepared by the following method:

[0052] (1) Preparation of diluent

[0053] Add 21.89g of acetone and 8g of sodium ethoxide (SA) emulsion (which contains 4g of 10% SA, 2g of alkylphenol polyoxyethylene ether compound OP-10 , 2g Polyethylene Glycol (PG, M=100), stir (600r / min) under the room temperature condition, slowly drip into 60g benzaldehyde through constant pressure funnel, control the speed of dripping, make benzaldehyde drop in 30min After the drop is finished, continue to react for 30 minutes, and at the same time control the reaction temperature through a water bath so that the temperature of the whole process does not exceed 40°C.

[0054] (2) Preparation of furfural-free epoxy chemical grouting material

[0055] Mix epoxy resin E51 with diluent, stir well, then add curing agent diethylenetriamine, accelerator DMAP and plasticizer dibutyl phthalate, and mix ...

Embodiment 3

[0060] An environment-friendly high-performance furfural-free epoxy chemical grouting material, which is prepared by the following method:

[0061] (1) Preparation of diluent

[0062] Add 21.89g of acetone and 12g of sodium hydroxide (NaOH) emulsion (which contains 8g of 10% NaOH, 2g of OP-10, 2g of PG) in a four-neck flask equipped with a thermometer, a constant pressure funnel, and a stirrer. Stir (600r / min), slowly drip 60g of benzaldehyde through the constant pressure funnel, control the speed of dripping, make the benzaldehyde drip in 30min, continue to react for 30min after dripping, and control the reaction temperature by water bath to make the whole process The temperature does not exceed 40°C.

[0063] (2) Preparation of furfural-free epoxy chemical grouting material

[0064] Mix epoxy resin E51 with diluent, stir evenly, then add curing agent TDC, accelerator DMAP and plasticizer dibutyl phthalate, after stirring evenly, you can get environment-friendly high-perfor...

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Abstract

The invention discloses an environment-friendly high-performance furfural-free epoxy chemical grouting material, which is prepared with 100 parts of epoxy resin, 100-150 parts of diluent, 8-20 parts of curing agents, 0.5 part of accelerators and 18 parts of other auxiliaries. Acetone is mixed with catalysts, benzaldehyde is dropped in at the room temperature, the reaction temperature is controlled to range from 20 DEG C to 40 DEG C, and reaction is performed for 0.5-5 hours, so that the diluent is obtained. The molar ratio of the benzaldehyde to the acetone is (0.8-2.5):1. The environment-friendly high-performance furfural-free epoxy chemical grouting material abandons toxic furfural and has an excellent mechanical performance and high surface adhesion force, the initial viscosity of slurry can be adjusted, and gelation time can be controlled. Moreover, the jet-grouted solid of the prepared grouting material is light in color, and the grouting material is capable of meeting the special requirements of a plurality of places on colors and can be widely used as building decoration materials and used for reservation of cultural relics and projects such as water plugging, water proofing, foundation reinforcement and the like.

Description

technical field [0001] The invention belongs to the field of chemical grouting, and in particular relates to an environment-friendly high-performance furfural-free epoxy chemical grouting material and a preparation method and application thereof. Background technique [0002] Epoxy resin grouting material is a low-viscosity grouting material prepared with epoxy resin as the main agent, together with diluent and curing agent. Unlike ordinary epoxy adhesives, epoxy grouting materials require low initial viscosity and good groutability, so diluents are very important in the formulation. At present, the most commonly used active diluent is furfural acetone system. This diluent has an excellent diluting effect on epoxy resin. -6 ~10 -8 cm / s (about 6×10 -4 mm gap) weak formation, the mechanical properties and chemical resistance of the slurry are excellent in all aspects after curing. However, furfural in the slurry is a highly toxic and volatile chemical raw material. Furfura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08G59/24C09K3/12E02D3/12
Inventor 雷翅张亚峰邝建政廖兵徐宇亮杨元龙
Owner GUANGZHOU CHEM GROUTING CO LTD CAS
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