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High-strength high-molecular curing agent for grouting and preparation process thereof

A technology of polymer and curing agent, applied in the field of curing agent, can solve the problems of accelerated reaction and violent polymerization

Inactive Publication Date: 2021-12-14
潘巧珍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, because there is no dilution of the solvent, the reaction becomes faster when mixed, so there is a risk of violent aggregation

Method used

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  • High-strength high-molecular curing agent for grouting and preparation process thereof
  • High-strength high-molecular curing agent for grouting and preparation process thereof

Examples

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Effect test

Embodiment 1

[0036] A curing agent for high-strength polymer grouting, comprising the following raw materials in parts by weight: 20 parts of the first component, 23 parts of the second component, 30 parts of formaldehyde, 30 parts of melamine, 50 parts of deionized water, and 200.1 parts of spar;

[0037] The curing agent for high-strength polymer grouting is prepared through the following steps:

[0038] The first step, preparing the first component and the second component;

[0039] The second step is to add formaldehyde, melamine and deionized water into the reaction kettle and mix evenly to obtain a mixed solution. Use sodium hydroxide to adjust the pH of the mixed solution to 9, set the temperature to 70°C, and the speed to 300r / min, and stir for 50 minutes , to obtain the prepolymer solution for subsequent use;

[0040] The third step is to mix the first component, the second component and Span 20; under the condition of rotating speed of 1000r / min, stir at room temperature for 5min,...

Embodiment 2

[0051] A curing agent for high-strength polymer grouting, comprising the following raw materials in parts by weight: 20-30 parts of the first component, 24 parts of the second component, 35 parts of formaldehyde, 40 parts of melamine, 55 parts of deionized water, and 200.2 parts of Span share;

[0052] The curing agent for high-strength polymer grouting is prepared through the following steps:

[0053] The first step, preparing the first component and the second component;

[0054] The second step is to add formaldehyde, melamine and deionized water into the reaction kettle and mix evenly to obtain a mixed solution. Use sodium hydroxide to adjust the pH value of the mixed solution to 9, set the temperature to 75°C, and the speed to 300r / min, and stir for 55 minutes , to obtain the prepolymer solution for subsequent use;

[0055] The third step is to mix the first component, the second component and Span 20; under the condition of rotating speed of 1000r / min, stir at room tem...

Embodiment 3

[0066] A curing agent for high-strength polymer grouting, comprising the following raw materials in parts by weight: 30 parts of the first component, 25 parts of the second component, 40 parts of formaldehyde, 50 parts of melamine, 60 parts of deionized water, and 200.3 parts of spar;

[0067] The curing agent for high-strength polymer grouting is prepared through the following steps:

[0068] The first step, preparing the first component and the second component;

[0069] The second step is to add formaldehyde, melamine and deionized water into the reaction kettle and mix evenly to obtain a mixed solution. Use sodium hydroxide to adjust the pH value of the mixed solution to 10, set the temperature to 80°C, and the speed to 300r / min, and stir for 60 minutes , to obtain the prepolymer solution for subsequent use;

[0070] The third step is to mix the first component, the second component and Span 20; under the condition of rotating speed of 1000r / min, stir at room temperature ...

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Abstract

The invention discloses a high-strength polymer grouting curing agent and a preparation process thereof. The high-strength polymer grouting curing agent comprises the following raw materials in parts by weight: 20-30 parts of a first component, 23-25 parts of a second component, 30-40 parts of formaldehyde, 30-50 parts of melamine, 50-60 parts of deionized water and 0.1-0.3 part of span 20. The preparation process comprises the following steps: 1, preparing the first component and the second component; 2, uniformly mixing formaldehyde, melamine and deionized water to obtain a mixed solution, adjusting the pH value of the mixed solution, setting the temperature at 70-80 DEG C, and stirring for 50-60 minutes to obtain a prepolymer solution for later use; and 3, stirring the first component, the second component and Span 20 at room temperature for 5-10 minutes, adding the prepolymer solution prepared in the step 2, setting the temperature to be 60 DEG C, adjusting the pH value of the reaction solution, stirring for 2 hours, and adjusting the pH value of the system after stirring to obtain the high-strength high-molecular grouting curing agent.

Description

technical field [0001] The invention belongs to the technical field of curing agents, and in particular relates to a curing agent for high-strength polymer grouting and a preparation process thereof. Background technique [0002] At present, the widely used epoxy grouting material in chemical grouting industry is epoxy-furfural-acetone system. In this system, epoxy resin is usually used to bond objects; and curing agent is used to cure epoxy resin. Due to the dilution of furfural and acetone, the viscosity of epoxy resin with a viscosity as high as several thousand or even tens of thousands becomes very small, as low as ten or even several mPa·s. When using this low-viscosity epoxy resin as epoxy grouting material, the viscosity requirements become less important in the selection of the corresponding curing agent, because the viscosity of the curing agent will be different from the epoxy resin before grouting. When the hardener is mixed, the epoxy resin is diluted. At pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/46C08G59/40C08G59/68C08G69/26C08F283/04C08F220/56C08G12/32C08L63/00
CPCC08G59/4035C08G59/46C08G59/686C08G69/265C08F283/045C08G12/32C08L63/00C08F220/56
Inventor 潘巧珍李丽坤李娇任嵬
Owner 潘巧珍
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