Low-temperature safety polyurethane injecting paste material for coal-rock mass reinforcement and preparation method thereof

A grouting material and safe technology, which is applied in the field of low-temperature safe polyurethane grouting material for coal and rock mass reinforcement and its preparation, can solve problems such as high internal reaction temperature, limited flame retardancy, and potential safety hazards, and achieve material viscosity Low cost, excellent construction performance and short production cycle

Active Publication Date: 2013-02-27
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the common polyurethane grouting materials commonly used at present have limited flame retardant properties, and when a large amount of grouting is applied, heat accumulation effects will occur, and the internal reaction temperature is high. Large-scale use may cause heartburn, spontaneous combustion, etc., causing potential safety hazards

Method used

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  • Low-temperature safety polyurethane injecting paste material for coal-rock mass reinforcement and preparation method thereof
  • Low-temperature safety polyurethane injecting paste material for coal-rock mass reinforcement and preparation method thereof
  • Low-temperature safety polyurethane injecting paste material for coal-rock mass reinforcement and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of component A

[0033] Accurately metered polyether polyol A (4 functionalities, molecular weight 430) 85 parts, polyether polyol B (3 functionalities, molecular weight 170) 15 parts, catalyst dibutylene dilaurate T-12 (USA 0.5 parts of air chemical industry), 5 parts of antistatic agent AT-21 (Shanghai Qiguang) and 20 parts of flame retardant trichloropropyl phosphate TCPP (Jiangsu Yake), put them into the reaction kettle, stir and mix for 2 hours, and produce materials, sealed packaging;

[0034] (2) Preparation of component B

[0035] 80 parts of accurately metered polymethylene polyphenyl polyisocyanate PM200, 13 parts of prepolymer DT1340 (PPG / MDI series prepolymer, Shandong Dongdayi Nuowei Polyurethane Co., Ltd.), viscosity reducer DBP (Zhejiang Construction Dejianye Organic Chemical Co., Ltd.) 7 parts; put into a reaction kettle, stir and mix for 2 hours, discharge, nitrogen replacement packaging.

[0036] Take 100g of A and B components accor...

Embodiment 2

[0041] ①Preparation of component A

[0042] Accurately measure 65 parts of polyether polyol A (3-functionality, molecular weight 450), 35 parts of polyether polyol B (2-functionality, molecular weight 270), 0.3 parts of catalyst lead isooctanoate (10%), antistatic agent AT-21 (Shanghai Qiguang Industry and Trade) 5 parts and flame retardant trichloropropyl phosphate TCPP (Jiangsu Yake Technology Co., Ltd.) 20 parts, flame retardant dimethyl methyl phosphate DMMP (Qingdao Lianmei Chemical Co., Ltd. ) 10 parts; add in the reaction kettle, stir and mix for 1 hour, discharge and seal the package;

[0043] ②Preparation of component B

[0044] Accurately metered polymethylene polyphenyl polyisocyanate 44v2078 parts, prepolymers D1345 and DT1340 (PPG / MDI series prepolymers, Shandong Dongdayi Nuowei Polyurethane Co., Ltd.) 12 parts, viscosity reducer DBP (Zhejiang Jiande Jianye Organic Chemical Co., Ltd.) 10 parts; put into the reaction kettle, stir and mix for 2 hours, discharge, n...

Embodiment 3

[0050] ①Preparation of component A

[0051] 75 parts of polyether polyol A (4 functionalities, molecular weight 430), 25 parts of polyether polyol B (3 functionalities, molecular weight 170) and catalyst dibutylene dilaurate T-12 (U.S. Air chemical industry) 1.5 parts, flame retardant trichloropropyl phosphate TCPP (Jiangsu Yake) 20 parts, flame retardant dimethyl methyl phosphate DMMP (Qingdao Lianmei Chemical Co., Ltd.) 10 parts, put into the reaction kettle, stir and mix 2 hours, after sampling and testing, discharge and seal the package.

[0052] ②Preparation of component B

[0053] 78 parts of accurately metered polymethylene polyphenyl polyisocyanate M20S, 6 parts of prepolymer D1345 (PPG / MDI series prepolymer, Shandong Dongdayi Nuowei Polyurethane Co., Ltd.) and viscosity reducer DBP (Zhejiang Jian Dejianye Organic Chemical Co., Ltd.) 10 parts; put into a reaction kettle, stir and mix for 2 hours, discharge, nitrogen replacement packaging.

[0054] According to the w...

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PUM

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Abstract

The invention provides a low-temperature safety polyurethane injecting paste material for coal-rock mass reinforcement and a preparation method thereof, and belongs to the field of polyurethane compositions. The material consists of a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 100 parts of polyether polyol, 0.2 to 2.0 parts of catalyst, 0 to 5 parts of antistatic agent, and 20 to 30 parts of flame retardant; and the component B comprises the following raw materials in parts by weight: 70 to 90 parts of polyisocyanates, 5 to 20 parts of pre-polymer, and 5 to 10 parts of viscosity reducer. The preparation method comprises the following steps of: (1) preparation of the component A, namely mixing the raw materials of the component A for later use; and (2) preparation of the component B, namely mixing the raw materials of the component B, and performing nitrogen displacement for later use. The low-temperature safety polyurethane injecting paste material has the advantages of flame retardant and antistatic performances, high adhered strength, strong shearing resistance and high toughness. The preparation method is simple and practical, has low requirements on production equipment and staff, and is short in production cycle; and according to the whole process, three wastes are not produced, and the environment and health of workers are not influenced.

Description

technical field [0001] The invention belongs to the field of polyurethane compositions, and in particular relates to a low-temperature safe polyurethane grouting material for coal and rock mass reinforcement and a preparation method thereof. Background technique [0002] In the process of coal mine production, there are often complex geological conditions that greatly affect mining efficiency. Coal seams and surrounding rocks are often affected by faults and mining pressures, resulting in fragmentation and deformation. Under the influence of high stress and strong mining, slipping, cracks, Collapse and other safety hazards. Grouting reinforcement is extremely effective in solving broken coal (rock) mass reinforcement. The principle of grouting reinforcement is to use grout to fill the cracks in the surrounding rock, consolidate the broken coal and rock mass, improve the overall strength of the surrounding rock, and thus enhance its own bearing capacity. There are many fact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08K5/521C08K5/12
Inventor 张丽郝德开唐国涛王超王艳艳
Owner SHANDONG INOV NEW MATERIALS CO LTD
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