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Quick-drying high-strength thin spraying material and preparation method thereof

A fast-drying, high-strength technology, applied in the field of thin spray materials, can solve the problems of low compressive and flexural strength of spray materials

Pending Publication Date: 2021-12-17
陕西蓝海科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) Diethanolamine is added in a three-necked flask, succinic anhydride is added into the solvent N, N-dimethylacetamide, and transferred to a constant pressure dropping funnel, and added dropwise to a three-necked flask to obtain intermediate A, Add the intermediate A into the three-necked bottle, add the catalyst, add the water-carrying agent, and drop glycerol into the three-necked bottle to obtain the foaming agent. By adding the foaming agent, the pressure resistance and bending resistance of the sprayed material are solved. The problem of low intensity;

Method used

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  • Quick-drying high-strength thin spraying material and preparation method thereof

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Effect test

Embodiment 1

[0039] This embodiment is a quick-drying high-strength thin-spray material, which is specifically prepared by the following steps:

[0040] S1: Add sand, professional cement and stabilizer to the mixing equipment, and stir for 5 minutes;

[0041] S2: Add special formula admixture and micropowder, keep the rotation speed at 30 rpm, stir for 8 minutes, add accelerator, increase the rotation speed to 45 rpm, and stir for 2 minutes to obtain spare materials;

[0042] S3: Use a spray pump to spray the spare material on the desired position, the spray thickness is 15mm, and the use is 30kg per square meter. After curing, the fast-drying high-strength thin spray material is obtained;

[0043] Wherein foaming agent is obtained by following preparation steps:

[0044] S31: Add diethanolamine into the three-necked flask, add the solvent N,N-dimethylacetamide, blow in nitrogen gas, turn on the magnetic stirrer, add succinic anhydride into the solvent N,N-dimethylacetamide, and Dissolve c...

Embodiment 2

[0053] This embodiment is a quick-drying high-strength thin-spray material, which is specifically prepared by the following steps:

[0054] S1: Add sand, professional cement and stabilizer to the mixing equipment, and stir for 8 minutes;

[0055] S2: Add special formula admixture and micropowder, keep the rotation speed at 30 rpm, stir for 8 minutes, add accelerator, increase the rotation speed to 45 rpm, and stir for 2 minutes to obtain spare materials;

[0056] S3: Use a spray pump to spray the spare material on the required position, the spray thickness is 20mm, and the use is 42kg per square meter. After curing, the fast-drying high-strength thin spray material is obtained;

[0057] Wherein foaming agent is obtained by following preparation steps:

[0058] S31: Add diethanolamine into the three-necked flask, add the solvent N,N-dimethylacetamide, blow in nitrogen gas, turn on the magnetic stirrer, add succinic anhydride into the solvent N,N-dimethylacetamide, and Dissolv...

Embodiment 3

[0067] This embodiment is a quick-drying high-strength thin-spray material, which is specifically prepared by the following steps:

[0068] S1: Add sand, professional cement and stabilizer to the mixing equipment, and stir for 10 minutes;

[0069] S2: Add special formula admixture and micropowder, keep the rotation speed at 30 rpm, stir for 8 minutes, add accelerator, increase the rotation speed to 45 rpm, and stir for 2 minutes to obtain spare materials;

[0070] S3: Use a spray pump to spray the spare material on the required position, the spray thickness is 20mm, and the use is 42kg per square meter. After curing, the fast-drying high-strength thin spray material is obtained;

[0071] Wherein foaming agent is obtained by following preparation steps:

[0072] S31: Add diethanolamine into the three-necked flask, add the solvent N,N-dimethylacetamide, blow in nitrogen gas, turn on the magnetic stirrer, add succinic anhydride into the solvent N,N-dimethylacetamide, and Dissol...

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Abstract

The invention discloses a quick-drying high-strength thin spraying material and a preparation method thereof, and relates to the technical field of thin spraying materials. The preparation method comprises the steps of adding diethanol amine into a three-necked bottle, adding succinic anhydride into a solvent N, N-dimethylacetamide, transferring the mixture into a constant-pressure dropping funnel, dropwise adding the mixture into the three-necked bottle to obtain an intermediate A, adding the intermediate A into the three-necked bottle, adding a catalyst, adding a water-carrying agent and dropwise adding glycerol into the three-neck bottle, and obtaining a foaming agent. The problem that the spraying material is low in compression resistance and breaking strength is solved by adding the foaming agent; and the generated ettringite can be mutually lapped to form a compact spatial network structure, the effects of accelerating coagulation and improving early strength are achieved, the solubility of calcium hydroxide is improved due to reduction of interfacial tension, calcium hydroxide can react with aluminum hydroxide and aluminum sulfate components in a thin spraying material system to generate more ettringite, and then the purposes of accelerating coagulation and early strength are achieved.

Description

technical field [0001] The invention relates to the technical field of thin spray materials, in particular to a fast-drying high-strength thin spray material and a preparation method thereof. Background technique [0002] The weathering of exposed coal and rock mass is mainly affected by wind and water. Weathering breaks the inherent water-gas balance inside the exposed surrounding rock. When the underground air is humid and contains a lot of water, the roadway surrounding rock absorbs the moisture in the air and produces rock mass. The phenomenon of water absorption and softening makes the rock mass soften and disintegrate, and its strength is reduced. When the underground air is relatively dry, the flowing wind will take away the original moisture in the rock mass, making the rock mass weathered and cracked, resulting in a decrease in the strength of the rock mass. [0003] The traditional dry spraying technology has a large workload for material transportation, difficult ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B28/34C08F291/00C08G63/685C04B103/12C04B103/42
CPCC04B28/04C04B28/344C08F291/00C08G63/6854C04B2103/12C04B2103/42C04B2201/40C04B2111/00724C04B2111/00155C04B14/06C04B16/0633C04B14/42C04B24/24C04B24/16C04B14/00C08F220/06C08F220/56
Inventor 蔡长辉郭明明陈毛伍
Owner 陕西蓝海科技有限公司
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