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High-water-resistance polyurethane material for coal mine downhole gas sealing and preparation method thereof

A polyurethane material and gas technology, applied in the field of polyurethane materials, achieves the effects of high closed cell rate, high sealing performance and reduced content

Active Publication Date: 2015-01-28
洛阳贝隆实业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High bonding strength, strong shear resistance, good toughness, impact resistance, acid and alkali resistance, which solves the problem that coal mine enterprises cannot use polyurethane sealant to seal holes when underground water is encountered during underground gas drainage

Method used

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  • High-water-resistance polyurethane material for coal mine downhole gas sealing and preparation method thereof
  • High-water-resistance polyurethane material for coal mine downhole gas sealing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Preparation of component A:

[0043] Accurately measure 55 parts of polyether polyol 1 (4.1 functionality, molecular weight 550), 17 parts of polyether polyol 2 (3 functionality, molecular weight 300), and catalyst triethylenediamine Dabco 33-LV (American Air Chemical) 0.5 parts, surface active agent AK-8805 (Nanjing Meiside) 1.5 parts, blowing agent 1,1-dichloro-1-fluoroethane (HCFC-141b, Zhejiang FTSE) 13 parts and flame retardant phosphoric acid Thirteen parts of Trichloropropyl TCPP (Jiangsu Jacques) were put into the reactor, stirred and mixed for 2 hours, and then discharged, sealed and packaged;

[0044] Preparation of component B

[0045] Put the accurately measured vacuum dehydrated polyoxypropylene polyol GE-303 (3-functionality, molecular weight 300) (Shanghai Gaoqiao) and diphenylmethane diisocyanate MDI-50 into the reactor, and place the vacuum at 80~110, ℃ After stirring for 2 hours in an environment of 0.05-0.1 MPa, the polymerization inhibitor is added, and t...

Embodiment 2

[0051] Preparation of component A:

[0052] Accurately measure 70 parts of polyether polyol 1 (4.6 functionality, molecular weight 580), 11 parts of polyether polyol 2 (2 functionality, molecular weight 210), and the catalyst pentamethyldiethylenetriamine PC CAT PMDETA (Germany Nitroil ) 0.3 parts, catalyst N, N-dimethylcyclohexylamine Polycat 8 (American Air Chemical) 0.2 parts, surfactant AK-158 (Nanjing Meiside) 1.5 parts, flame retardant dimethyl methyl phosphate DMMP (Qingdao Lianmei) 7 parts and 10 parts of foaming agent 1,1,1,3,3-pentafluoropropane Enovate 3000 (Honeywell, USA) are put into the reactor, stirred and mixed for 1 hour, then discharged, sealed and packaged;

[0053] Preparation of component B

[0054] Put the accurately measured vacuum dehydrated polyoxypropylene polyol GE-204 (2-functionality, molecular weight 400) (Shanghai Gaoqiao) and diphenylmethane diisocyanate MDI-100 into the reactor, and place the vacuum at 80~110, ℃ After stirring for 2 hours in an env...

Embodiment 3

[0060] Preparation of component A:

[0061] Accurately measure 60 parts of polyether polyol 1 (4.3 functionality, molecular weight 560), 15 parts of polyether polyol 2 (3 functionality, molecular weight 500), and catalyst N,N-dimethylbenzylamine Dabco BDMA (U.S. Air Chemical Industry) 0.5 parts, catalyst pentamethyldiethylene triamine Polycat 5 (U.S. Air Chemical Industry) 0.2 parts, surfactant L-5421 (American Momentum) 1.3 parts, flame retardant dimethyl methyl phosphate DMMP (Qingdao) United States) 4 parts, flame retardant trichloropropyl phosphate TCPP (Jiangsu Jacques) 5 parts and blowing agent 1,1,1,3,3-pentafluorobutane HFC-365 (Solvay company) 14 parts were put into the reaction In the kettle, stir and mix for 1 hour, then discharge and seal the package;

[0062] Preparation of component B

[0063] Put the accurately measured vacuum dehydrated polyoxypropylene polyol GE-210 (2-functionality, molecular weight 1000) (Shanghai Gaoqiao) and diphenylmethane diisocyanate MDI-50 ...

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Abstract

The invention relates to a high-water-resistance polyurethane material for coal mine downhole gas sealing, which is composed of a component A and a component B in a weight ratio of 1:1. The component A comprises the following raw materials in parts by weight: 50-75 parts of polyether glycol 1, 10-20 parts of polyether glycol 2, 1.0-2.0 parts of surfactant, 0.1-2.0 parts of catalyst, 5-15 parts of flame retardant and 10-15 parts of foaming agent. The component B comprises the following raw materials in parts by weight: 40-70 parts of polyisocyanate, 25-50 parts of prepolymer and 5-10 parts of diluter. The polyether glycol 1 in the component A is polyoxypropylene polyalcohol, of which the functionality is 3-5 and the molecular weight is 300-800; and the polyether glycol 2 is polyoxypropylene polyalcohol, of which the functionality is 2-3 and the molecular weight is 150-2000.

Description

Technical field [0001] The invention relates to the technical field of polyurethane materials, in particular to a high-waterproof polyurethane material used for sealing gas in underground coal mines and a preparation method. Background technique [0002] It is known that gas is an associated gas in the process of coal production, and its main component is methane. In the production process of coal mines, the losses caused by gas explosions are the most serious of all mine accidents. Not only does it seriously threaten the safety of coal miners’ lives and property, it also greatly limits the mine’s production capacity, reduces production efficiency, and restricts the sustainable development of my country’s coal industry. Therefore, effective prevention and control of gas accidents is the key to solving our country's coal mine safety problems. [0003] In the treatment of coal mine gas accidents, gas drainage is one of the most effective measures, and the Chinese government and rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/10C08K5/521C08J9/14C08J9/08
CPCC08G18/10C08G18/3203C08G18/48C08G18/6674C08G18/7657C08J9/144C08J9/146C08J2375/08C08K5/521
Inventor 葛丙贺
Owner 洛阳贝隆实业有限公司
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