Preparation method of mining reinforcement material

A reinforcement material and mining technology, which is applied in the field of preparation of mining reinforcement materials, can solve the problems of poor flame retardancy and poor mechanical properties, and achieve the effects of good durability, high specific strength and stability.

Inactive Publication Date: 2019-07-05
张文中
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention: Aiming at the problems of poor flame retardancy and poor mechanical properties of existing polyurethane grouting reinforcement materials for coal mines, a preparation method of mine reinforcement materials is provided

Method used

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  • Preparation method of mining reinforcement material

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example 1

[0035] Take polyisocyanate, polyether polyol, catalyst, defoamer, reinforcing agent, and flame-retardant filler, and mix and stir the polyisocyanate, polyether polyol, catalyst, defoamer, honeycomb glass cloth, and flame-retardant filler respectively , that is, the mining reinforcement material. The catalyst is prepared in the following steps: mixing stannous octoate and triethylenediamine according to the mass ratio of 1.0:1.2 to obtain the catalyst. The preparation steps of the defoamer are as follows: uniformly mix emulsified silicone oil and polydimethylsiloxane in a mass ratio of 2:3 to obtain the defoamer. The preparation steps of the reinforcing agent are as follows: according to the mass ratio of 1:10, the alkali-free glass fiber with a diameter of 0.2 μm is beaten and dispersed in a sulfuric acid solution with a mass fraction of 20% to obtain a mixed slurry; Pour 1L of ultrapure water into the reaction generating device, and after 30 minutes, pass in moist nitrogen w...

example 2

[0037] Take polyisocyanate, polyether polyol, catalyst, defoamer, reinforcing agent, and flame-retardant filler, and mix and stir the polyisocyanate, polyether polyol, catalyst, defoamer, honeycomb glass cloth, and flame-retardant filler respectively , that is, the mining reinforcement material. The catalyst is prepared in the following steps: mixing stannous octoate and triethylenediamine according to the mass ratio of 1.0:1.2 to obtain the catalyst. The preparation steps of the defoamer are as follows: uniformly mix emulsified silicone oil and polydimethylsiloxane in a mass ratio of 2:3 to obtain the defoamer. The preparation steps of the reinforcing agent are as follows: according to the mass ratio of 1:10, the alkali-free glass fiber with a diameter of 0.35 μm is beaten and dispersed in a sulfuric acid solution with a mass fraction of 20% to obtain a mixed slurry; Pour 1L of ultrapure water into the reaction generating device, and after 40 minutes, pass in moist nitrogen ...

example 3

[0039] Take polyisocyanate, polyether polyol, catalyst, defoamer, reinforcing agent, and flame-retardant filler, and mix and stir the polyisocyanate, polyether polyol, catalyst, defoamer, honeycomb glass cloth, and flame-retardant filler respectively , that is, the mining reinforcement material. The catalyst is prepared in the following steps: mixing stannous octoate and triethylenediamine according to the mass ratio of 1.0:1.2 to obtain the catalyst. The preparation steps of the defoamer are as follows: uniformly mix emulsified silicone oil and polydimethylsiloxane in a mass ratio of 2:3 to obtain the defoamer. The preparation steps of the reinforcing agent are as follows: according to the mass ratio of 1:10, the alkali-free glass fiber with a diameter of 0.5 μm is beaten and dispersed in a sulfuric acid solution with a mass fraction of 20% to obtain a mixed slurry; Pour 1L of ultrapure water into the reaction generating device, and after 50 minutes, pass in moist nitrogen w...

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Abstract

The invention relates to a preparation method of a mining reinforcement material, and belongs to the technical field of mining materials. The preparation method of the mining reinforcement material ischaracterized in that based on the flame retardance characteristic of ammonium polyphosphate, with diatomite as a carrier, a double-component ammonium polyphosphate-diatomite inorganic composite flame-retardant filler is prepared by an in-situ polymerization method, and an ammonium polyphosphate-diatomite/synergist composite flame-retardant filler is designed on the basis of the double-componentcomposite flame-retardant filler with magnesium hydroxide the synergist; with good smoke absorbing effect of the diatomite with high specific surface area and based on the special layered structure and composition and also flame retarding, smoke suppressing and acid resisting functions of magnesium hydroxide, the prepared mining reinforcement material is allowed to have good flame retarding and smoke suppressing properties; cellular glass cloth is used as a reinforcing agent for the mining reinforcement material, so that the strength of the mining reinforcement material is effectively improved; and according to the invention, a synergistic effect between two flame-retardant elements silicon and phosphorus causes a decrease in the number of brittle amorphous carbon layers generated and an improvement in the flame retardance of the mining reinforcement material.

Description

technical field [0001] The invention relates to a preparation method of a mine reinforcement material, which belongs to the technical field of mine materials. Background technique [0002] With the increase of mineral mining depth and the emergence of complex terrain, dangerous accidents such as roof leakage and chipping caused by fault fracture zones and unstable strata not only affect the production efficiency of enterprises, but also seriously threaten the life safety of miners. Therefore, in the production process, grouting reinforcement is generally required. At present, the most widely used organic polymer grouting reinforcement materials include polyurethane, urea-formaldehyde, and phenol-formaldehyde. Although urea-formaldehyde and phenolic reinforcement materials have the advantages of good permeability, adjustable gel speed, and low cost, their disadvantages such as low strength and brittleness prevent them from being widely recognized. Polyurethane materials hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L83/04C08K13/04C08K3/32C08K7/26C08K3/22C08K7/00C08K7/14C08G18/48
CPCC08G18/48C08K2003/222C08K2003/323C08L75/08C08L2201/02C08L2205/025C08L2205/03C08L83/04C08K13/04C08K3/32C08K7/26C08K3/22C08K7/00C08K7/14
Inventor 张文中
Owner 张文中
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