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Inorganic matter compounded polyurethane grouting material and preparation method thereof

A technology of composite polyurethane and grouting materials, which is applied in the field of inorganic composite polyurethane grouting materials, can solve the problems of cement slurry being easily washed away, poor impermeability, and long initial setting period, and achieve low cost, improved impermeability, good quality effect

Active Publication Date: 2019-05-10
四川共拓岩土科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of poor impermeability of the silicate modified polyurethane grouting materials at the present stage, and at the same time solve the problem that the cement slurry is easily washed away under water, and at the same time, due to the long initial setting period, a large amount of materials are wasted after being washed away Problem, the present invention provides an inorganic composite polyurethane grouting material with good impermeability, underwater dispersion resistance and dynamic water erosion resistance and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The ratio of raw materials for inorganic composite polyurethane grouting material in this example: cement 1000g, polyurethane system 500g.

[0021] The polyurethane system includes the following raw materials by weight: polyether polyol 220, polyurethane prepolymer 200; catalyst and auxiliary agent include the following raw materials by weight: bismuth isooctanoate 0.5, zinc carboxylate 4, alkylene carbonate 60, di Methyl silicone oil 3, BYK-066N 5, KH-540 3, BYK-W96 4.5.

[0022] The preparation method of the above-mentioned inorganic compound polyurethane grouting material: first take out the catalyst, the auxiliary agent, the A component and the B component and stir them evenly, and then mix them with the inorganic cement to obtain the grouting material.

Embodiment 2

[0024] The ratio of the raw materials of the inorganic composite polyurethane grouting material in this example: 1000g of micro-silica fume, 600g of polyurethane system.

[0025] The polyurethane system includes the following raw materials by weight: polyether polyol 130, polyester polyol 110, MDI 218; the catalyst and auxiliary agent include the following raw materials by weight: bismuth neodecanoate 1, zinc carboxylate 6, alkylene carbonate Ester 120, Simethicone 4, BYK-A506 6, BYK-W961 5.

[0026] The preparation method is the same as in Example 1.

Embodiment 3

[0028] The ratio of raw materials for inorganic compound polyurethane grouting material in this example: 300g of cement, 300g of silica fume, 600g of polyurethane system.

[0029] The polyurethane system includes the following raw materials in parts by weight: polyether polyol 110, polyester polyol 130, polymerized MDI218; catalyst and auxiliary agent include the following raw materials in parts by weight: bismuth isooctanoate 1, zinc carboxylate 6, alkylene carbonate 120, Simethicone 4, BYK-W966 7, BYK-306 4.

[0030] The preparation method is the same as in Example 1.

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PUM

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Abstract

The invention relates to an inorganic matter compounded polyurethane grouting material and a preparation method thereof. The grouting material is mainly composed of an inorganic matter and a polyurethane system, wherein the polyurethane system is composed of a component A, a component B, a catalyst and an adjuvant. The component A, the component B, the catalyst and the adjuvant are uniformly stirred and then mixed and stirred with the inorganic matter, so as to acquire the grouting material. According to the invention, inorganic matters in different grain sizes are compounded with polyurethane, so that impervious performance of the grouting material can be promoted, a certain underwater anti-dispersing performance is kept, and the grouting material, compared with special slurry materials (polyurethane and epoxy grouting materials), has the advantages of low cost and high quality.

Description

technical field [0001] The invention belongs to the field of grouting materials in water conservancy and hydropower industries and mining industries, and relates to an inorganic composite polyurethane grouting material. 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 buildings and structures. Fluid materials that improve their impermeability, strength, and durability. [0003] Cement slurry is currently the most widely used and most demanded inorganic grouting material. Cement slurry has the advantages of wide material source, low cost, simple slurry preparation, convenient grouting operation process, etc., so it is widely used. However, the cement slurry has a long setting time, and the general cement slurry disperses rapidly ...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B28/02C08G18/48C08G18/42C08G18/40
Inventor 臧鹏李乔斌钟久安
Owner 四川共拓岩土科技股份有限公司