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Coal mine stratum reinforcement material and preparation method thereof

A technology for strengthening materials and strata, which is applied in the field of coal mine stratum strengthening materials and its preparation, can solve problems such as complex coal seam structure, poor durability, and difficult operation, and achieve the effects of convenient and quick on-site application, easy control of product quality, and simple production process

Inactive Publication Date: 2013-07-10
BASF HOCK MINING CHEM CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country is rich in coal resources, widely distributed in regions, and the strata in most areas are also complex and changeable, resulting in complex coal seam structures. At the same time, the coal geological structure is relatively fragmented, with high in-situ stress and low geological strength. and the triangular area all need to be reinforced. The reinforcement materials in the prior art usually include clay, cement, cement-water glass, microcement, acrylamide, epoxy resin, polyurethane, and traditional inorganic materials are used as reinforcements for strengthening the coal mine formation strength. The material has disadvantages such as low strength and difficult operation; among the grouting materials in the prior art, acrylamides have poor durability and high toxicity; although epoxy resins have strong cohesive force, they have high viscosity and difficult grouting; polyurethanes have relatively Good adhesion and durability, but poor flame retardancy, high reaction temperature, and potential safety hazards

Method used

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  • Coal mine stratum reinforcement material and preparation method thereof
  • Coal mine stratum reinforcement material and preparation method thereof
  • Coal mine stratum reinforcement material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: prepare 200 kilograms of low-temperature reinforcement materials for coal mines, and the weight ratio of the corresponding A and B components is:

[0024] A component contains the following components:

[0025]

[0026] Part B contains the following components:

[0027]

[0028] The preparation method of component A: Take 68 kg of polyether polyol and add it to the reaction kettle, start stirring, and after stirring for 1 hour, slowly add 0.6 kg of water, 3 kg of 1,4-butanediol, dimethyl phosphate 25 kg of ester, 2.4 kg of silicone oil, 1 kg of triethylenediamine and dibutyltin dilaurate, disperse at high speed for 30 minutes, release from the feeding port, inspect, fill and seal, and prepare 100 kg of component A.

[0029] The preparation method of component B: take 70 kg of polyisocyanate and add it to the reaction kettle, seal it with nitrogen, start stirring, add 20 kg of dimethyl adipate and 10 kg of dimethyl phosphate, stir for 1 hour, and the...

Embodiment 2

[0031] Embodiment 2: prepare 200 kilograms of low-temperature reinforcement materials for coal mines, and the weight ratio of the corresponding A and B components is:

[0032] A component contains the following components:

[0033] Polyether polyol 70 water and dichlorofluoroethane 1 1,4-Butanediol 2 diethyl ethyl phosphate 20 silicone oil 3 Triethylenediamine and dibutyltin dilaurate 1 triphenyl phosphite 3

[0034] B component:

[0035] polyisocyanate 70 Dioctyl sebacate 15 diethyl ethyl phosphate 15

[0036] The preparation method of component A: Take 70 kg of polyether polyol and add it to the reaction kettle, start stirring, and after stirring for 1 hour, slowly add water, 2 kg of dichlorofluoroethane, 2 kg of 1,4-butanediol, 20 kg of diethyl ethyl phosphate, 3 kg of silicone oil, 1 kg of triethylenediamine and dibutyltin dilaurate, 3 kg of triphenyl phosphite, disperse at high speed for 30 mi...

Embodiment 3

[0039] Embodiment 3: prepare 200 kilograms of low-temperature reinforcement materials for coal mines, and the weight ratio of the corresponding A and B components is:

[0040] Polyether polyol 73.7 Dichlorofluoroethane 0.5 Ethylene glycol 3 diethyl ethyl phosphate 18 silicone oil 2 Tetraethylenediamine and dibutyltin dilaurate 0.8 triisodecyl phosphite 2

[0041] polyisocyanate 66 Diacid diester 18 diethyl ethyl phosphate 16

[0042] The preparation method of component A: Take 73.7 kg of polyether polyol and add it to the reaction kettle, start stirring, after stirring for 1 hour, slowly add 0.5 kg of dichlorofluoroethane, 3 kg of ethylene glycol, diethyl ethyl phosphate 18 kg of ester, 2 kg of silicone oil, 0.8 kg of tetraethylenediamine and dibutyltin dilaurate, 2 kg of triisodecyl phosphite, disperse at high speed for 30 minutes, release from the feeding port, inspect, fill and seal, and make Get...

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PUM

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Abstract

The invention discloses a coal mine stratum reinforcement material. The reinforcement material consists of two components A and B, wherein polymeric polyols is adopted as a main agent of the component A and added with an additive, and the additive is one substance or a mixture of more than two substances selected from a forming agent, a chain extender, a plasticizer, a fire retardant, a foam stabilizer, a catalyst and an antioxidant; polyisocyanates is utilized as a main agent of the component B and added with an additive, the additive is one or a mixture of a plasticizer and a fire retardant, wherein the components A and B are mixed according to a weight ratio of 1:1 so as to produce the coal mine stratum reinforcement material. The reinforcement material has the beneficial effects that the reinforcement material has the characteristics of safety, no pollution, good flame resistance and simple production technology, product quality control is easy and field application is convenient and quick, and is particularly suitable for reinforcing coal mine stratums.

Description

technical field [0001] The invention relates to the technical field of chemical grouting materials, in particular to a coal mine formation reinforcement material and a preparation method thereof. Background technique [0002] my country is rich in coal resources, widely distributed in regions, and the strata in most areas are also complex and changeable, resulting in complex coal seam structures. At the same time, the coal geological structure is relatively fragmented, with high in-situ stress and low geological strength. and the triangular area all need to be reinforced. The reinforcement materials in the prior art usually include clay, cement, cement-water glass, microcement, acrylamide, epoxy resin, polyurethane, and traditional inorganic materials are used as reinforcements for strengthening the coal mine formation strength. The material has disadvantages such as low strength and difficult operation; among the grouting materials in the prior art, acrylamides have poor dura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08J9/10C08J9/14C08L75/06C08L75/08C08G101/00
Inventor 冯新武李培春时迎芹
Owner BASF HOCK MINING CHEM CHINA