Low-temperature two-component polyurethane material used in field of coal and rock mass reinforcement and preparation method of low-temperature two-component polyurethane material

A two-component polyurethane, low-temperature technology, applied in the field of low-temperature two-component polyurethane materials and their preparation, can solve the problems of potential safety hazards and high reaction heat release
CN112778483APending Publication Date: 2021-05-11SHANDONG INOV NEW MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANDONG INOV NEW MATERIALS CO LTD
Publication Date
2021-05-11

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Abstract

The invention belongs to the technical field of high polymer materials, and particularly relates to a low-temperature two-component polyurethane material used in the field of coal and rock mass reinforcement and a preparation method of the low-temperature two-component polyurethane material. The low-temperature two-component polyurethane material is prepared from a component A and a component B in a mass ratio of (1.0: 1)-(2.0: 1), wherein the component A is prepared from polyether polyol A, polyether polyol B, polyether polyol C, a catalyst, a flame retardant and a flexibilizer, and the component B is prepared from polyphenyl polymethylene polyisocyanate, an isocyanate type polyurethane prepolymer, a flexibilizer and a flame retardant. Through the structural design of the component A polyether polyol and the modification of the component B polyether polyol modified isocyanate type polyurethane prepolymer, the prepared polyurethane material has the advantages of low reaction temperature (the highest reaction temperature is less than 100 DEG C), high mechanical property (the compression strength is greater than 40MPa, and the performance requirements of the high polymer material for the coal mine to be implemented are met.
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Description

technical field

[0001] The invention belongs to the technical field of polymer materials, and in particular relates to a low-temperature two-component polyurethane material used in the field of coal and rock mass reinforcement and a preparation method thereof. Background technique

[0002] During the underground mining construction of coal mines, due to the geological structure, primary fissures, and the broken coal and rock mass formed by the influence of mining pressure, etc., the roadway cofferdam, roof, working face, etc., especially the loose coal (rock) mass are easily collapsed. risk, affecting safe production. Especially with the popularization of large-scale comprehensive mining equipment, it is necessary to maintain the mining roadway, chamber, working face and roof during the coal mining process. Chemical grouting reinforcement technology has been widely used abroad in the 1970s. For example, Germany, France, Russia and other countries have developed a variety of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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