Flame-retardant low-heat-release type gas extraction drilled hole plugging material and preparation method thereof

A plugging material and gas drainage technology, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of inability to guarantee the stability of the sealing effect, accelerate the spontaneous combustion and oxidation process of coal, and high foaming ratio of grouting materials, etc. problems, achieve significant economic and social benefits, increase compactness, and ensure the effect of gas drainage
CN102942677BInactive Publication Date: 2015-03-18GUIZHOU YONGJU HENGFENG TECH DEV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUIZHOU YONGJU HENGFENG TECH DEV
Publication Date
2015-03-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a flame-retardant low-heat-release type gas extraction drilled hole plugging material, which comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by mass: 45 to 75 parts of polyether polyol 1, 5 to 15 parts of polyether polyol 2, 15 to 30 parts of mannich polyols, 1 to 5 parts of polyester polyol, 0.01 to 3.0 parts of catalyst, 1.5 to 3.0 parts of foam stabilizer, 1.0 to 6.0 parts of foaming agent, 10 to 30 parts of flame retardant and 0.5 to 1.5 parts of stabilizer; the component B is multi-methylene multi-phenyl polyisocyanates; and the mass proportion of the component A to the component B is 100:(100-200). The plugging material can meet a requirement of the conventional hole plugging construction process; and the prepared plugging material has the characteristics of low reaction release heat, small water foaming rate, high flame retardant, high mechanical property and the like.
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Description

technical field

[0001] The invention belongs to the field of polymer materials, and in particular relates to a flame-retardant and low-heat release type gas drainage drilling plugging material and a preparation method thereof. Background technique

[0002] Coal mine gas drainage is a fundamental measure to make full use of natural resources, prevent and control gas disasters, and protect energy security. Sealing is an important technical process in coal mine gas extraction, and the quality of the sealing material directly affects the amount and efficiency of gas extraction. The existing two-component polyurethane grouting material used as the plugging material for gas drainage drilling has the following disadvantages: 1) generally has the disadvantage of poor flame retardancy; 2) during the sealing process, the sealing material reacts and releases a large amount of The heat in the borehole can easily cause heat accumulation, accelerate the spontaneous combustion and oxidati...

Claims

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