Modified polyurethane grouting material and preparation method and application thereof

A grouting material, polyurethane technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of low strength of the consolidated body, complicated operation process, pollution of the environment, etc., and achieve high strength and penetration of the foamed consolidated body. Good performance and low cost

Active Publication Date: 2014-11-12
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high cost, the pollution of some admixtures to the environment, the complicated operation process, and the low strength of the consolidated body, the application of polyurethane materials has been greatly restricted.

Method used

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  • Modified polyurethane grouting material and preparation method and application thereof
  • Modified polyurethane grouting material and preparation method and application thereof

Examples

Experimental program
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preparation example Construction

[0015] The invention provides a kind of preparation method of modified polyurethane grouting material, wherein, the method comprises the following steps:

[0016] Step 1: contact and mix diluent, isocyanate compound, water and portland cement to obtain component A;

[0017] Contact and mix the polymeric alcohol, foam stabilizer and catalyst to obtain component B;

[0018] Step 2: Mix component A and component B evenly.

[0019] Wherein, in step 1, the process of contacting and mixing to obtain component A can be carried out according to the following steps: firstly, the diluent and the isocyanate compound are contacted and mixed, and then the mixture 1 is contacted with water to obtain the mixture 2, and then the mixture 2 is mixed with silicon Salt cement is contacted to obtain Component A.

[0020] In Step 1, the process of contacting and mixing to obtain component B can be carried out according to the following steps: first contact and mix the polymer alcohol with the foa...

Embodiment 1-9

[0051]Examples 1-9 are used to illustrate the preparation method of the modified polyurethane grouting material provided by the present invention.

[0052] According to the component content listed in Table 2, the modified polyurethane grouting material was prepared.

[0053] In the mixing kettle, firstly add diluent, then add isocyanate compound and stir evenly, then add water and mix evenly, finally add portland cement and mix evenly under normal pressure to prepare component A.

[0054] In the mixing kettle, firstly add the polymer alcohol, then add the foam stabilizer and stir evenly, and finally add the catalyst, stir and mix evenly to prepare component B.

[0055] Mix component A and component B uniformly to obtain modified polyurethane grouting material.

[0056] Table 2

[0057]

[0058] In embodiment 1-9, the specific selection of each component is as follows:

[0059] The selection of each component among the embodiment 1-5 is as follows: diluent (butyl acetate...

Embodiment 6

[0061] The modified polyurethane grouting material was prepared according to the method of Example 1, except that the diluent was mixed with butyl acetate and methylene chloride at a weight ratio of 17:23.

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Abstract

The invention discloses a preparation method and application of a modified polyurethane grouting material. The preparation method comprises the following steps that firstly, diluents, isocyanate compounds, water and Portland cement make contact and are evenly mixed to obtain a component A, and polymeric alcohol, foam stabilizers and catalysts make contact and are evenly mixed to obtain a component B; secondly, the component A and the component B make contact and are evenly mixed. The preparation method and application of the modified polyurethane grouting material solve the problems of an existing pure polyurethane grouting material that the cost is high, induration strength is low, and an inorganic grouting material is long in setting time and slow in strength development, and the obtained material is low in cost, adjustable in setting time, high in foaming induration strength, good in permeability and environmentally friendly.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a modified polyurethane grouting material and its preparation method and application. Background technique [0002] The grouting material refers to pouring into the cracks and holes in the bottom layer, rocks or structures under a certain pressure to reduce extrusion leakage, improve the physical and mechanical properties of cracked rock mass, and increase the overall stability of the foundation of buildings and structures. Fluid materials that improve their impermeability, strength, and durability. There are many kinds of grouting materials, generally divided into inorganic grouting materials and organic grouting materials. [0003] Inorganic grouting materials are mainly cement slurry, cement mortar, superfine cement slurry, clay slurry, cement clay slurry, cement lime slurry, etc. Among them, cement slurry is currently the inorganic grouting material with the widest applica...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08K3/34C08G18/76C08G18/73C08G18/48C09K3/10C04B28/04C04B111/70
Inventor 叶长文陈礼仪王胜李之军袁进科霍宇翔袁学武韦猛
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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