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

Pending Publication Date: 2021-05-11
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the high heat released by the reaction of polyurethane materials, it is easy to accumulate in the coal seam voids to form hot spots, causing safety hazards. Controlling the heat of reaction and material strength of polyurethane materials has become a key problem in this field

Method used

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  • 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
  • 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
  • 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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] To make 100 kilograms of component A of the combined polyether product, put 37.1 kilograms of weighed polyether polyol A, 28.9 kilograms of polyether polyol B, and 16.5 kilograms of polyether polyol C into the reactor for stirring, add N, 0.2 kg of N-dimethylcyclohexylamine, 0.4 kg of N,N-dimethylbenzylamine, 0.4 kg of bismuth isooctanoate, 12.4 kg of tris(2-chloropropyl) phosphate, 4.1 kg of dioctyl phthalate kg, stirred for 45 minutes, sampled and tested, and packaged after passing the test.

[0035] Make 100 kg of component B of the combined polyether product, 80 kg of polyphenyl polymethylene polyisocyanate, 15 kg of tris(2-chloropropyl) phosphate, and 5 kg of dioctyl phthalate into the reactor Stir in the medium for 45 minutes, take samples for inspection, and pack after passing the test.

[0036] Wherein, the polyether polyol A is a polypropylene oxide ether polyol with an average functionality of 5.7 and a hydroxyl value of 200; the polyether polyol B is a polyp...

Embodiment 2

[0042] To make 100 kilograms of component A of the combined polyether product, put 37.1 kilograms of weighed polyether polyol A, 28.9 kilograms of polyether polyol B, and 16.5 kilograms of polyether polyol C into the reactor for stirring, add N, 0.2 kg of N-dimethylcyclohexylamine, 0.4 kg of N,N-dimethylbenzylamine, 0.4 kg of bismuth isooctanoate, 16.5 kg of tris(2-chloropropyl) phosphate, stirred for 45 minutes, sampled and tested, qualified After packing.

[0043] Make 100 kilograms of component B of the combined polyether product, 30 kilograms of polyphenyl polymethylene polyisocyanates, 50 kilograms of polyether polyol modified polyisocyanate type prepolymers, and 10 kilograms of tris (2-chloropropyl) phosphate kg, 10 kg of dioctyl phthalate was put into the reactor and stirred for 45 minutes, sampled and tested, and packaged after passing the test.

[0044] Wherein, the polyether polyol A is a polypropylene oxide ether polyol with an average functionality of 5.3 and a hy...

Embodiment 3

[0050]To make 100 kg of component A of the combined polyether product, put 30.1 kg of polyether polyol A, 23.0 kg of polyether polyol B, and 29.4 kg of polyether polyol C into the reactor and stir, add N, N - 0.2 kg of dimethylcyclohexylamine, 0.4 kg of N,N-dimethylbenzylamine, 0.4 kg of bismuth isooctanoate, 16.5 kg of tris (2-chloropropyl) phosphate, stirred for 45 minutes, sampling test, after passing Package.

[0051] Make 100 kilograms of component B of the combined polyether product, pack 80 kilograms of polyether polyol modified isocyanate prepolymer, 15 kilograms of tris(2-chloropropyl) phosphate, and 5 kilograms of dioctyl phthalate Stir in the reaction kettle for 45 minutes, take a sample for inspection, and pack it after passing the test.

[0052] Wherein, the polyether polyol A is a polypropylene oxide ether polyol with an average functionality of 5.9 and a hydroxyl value of 190; the polyether polyol B is a polypropylene oxide polyol with an average functionality ...

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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.

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

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Application Information

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IPC IPC(8): C08G18/48C08G18/10C08K5/521C08K5/12
CPCC08G18/4816C08G18/10C08K5/521C08K5/12
Inventor 魏光曦付振武马海晶刘玄殷守相
Owner SHANDONG INOV NEW MATERIALS CO LTD
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