Environment-friendly mine low-temperature spraying material and preparation method thereof

A spraying material and an environmentally friendly technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of increased dust pollution, foaming agent pollution, poor adhesion, etc., to improve the drainage effect and prevent gas richness The effect of large set and foaming magnification

Active Publication Date: 2019-11-08
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The exposed coal rock will also increase the dust pollution in the roadway, which affects the health of coal miners
In order to solve these problems, it is necessary to seal the exposed coal walls and cavities. The main method of implementation is spraying. Although the inorganic spraying materials used for spraying are low in cost, they have poor cohesive force and are easy to crack. At the same time, dust is easily generated during construction; organic Spraying materials have strong adhesion, good airtightness, and large foaming ratio, but there are problems such as poor flame retardancy, high internal reaction temperature, and air pollution by foaming agents.

Method used

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  • Environment-friendly mine low-temperature spraying material and preparation method thereof
  • Environment-friendly mine low-temperature spraying material and preparation method thereof
  • Environment-friendly mine low-temperature spraying material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Component A: Weigh 25 parts of polyether polyol (functionality: 3, molecular weight: 3000), 30 parts of liquefied starch, 10 parts of ammonium bicarbonate, 21 parts of water, 10 parts of tris(2-chloropropyl) phosphate , 1 part of foam stabilizer (B8544, Evonik), 1 part of epoxy adduct of fatty acid, 1 part of bis(dimethylaminoethyl) ether, 0.5 part of pentamethyldiethylenetriamine, tris(two 0.5 parts of methylaminopropyl) hexahydrotriazine are mixed evenly, and packaged for later use;

[0030] Component B: Weigh 70 parts of polymethylene polyphenyl polyisocyanate and 30 parts of tris(2-chloroethyl) phosphate, stir evenly, and package for later use;

[0031] Mixing and curing: Add component A and component B into the spraying machine with a mass ratio of 1:1 for spraying. The performance test results are shown in Table 1.

[0032] The product performance testing result that table 1 embodiment 1 obtains

[0033] Overall density kg / m 3

Embodiment 2

[0035] Component A: Weigh 30 parts of polyether polyol (functionality: 3, molecular weight: 2000), 26 parts of liquefied starch, 8 parts of ammonium bicarbonate, 10 parts of water, and 10 parts of tris(2-chloropropyl) phosphate , 10 parts of triethyl phosphate, 2 parts of foam stabilizer (L6869, American Momentive), 0.5 parts of ethanolamine-glycidyl ether and 2 parts of catalyst dimethylcyclohexylamine, tris(dimethylaminopropyl) hexahydrotri 1.5 parts of oxazine were mixed evenly, and packaged for later use;

[0036] Component B: Weigh 60 parts of polymethylene polyphenyl polyisocyanate, 30 parts of carbodiimide modified isocyanate, and 10 parts of dimethyl methylphosphonate, stir evenly, and package for later use;

[0037] Mixing and curing: Add component A and component B into the spraying machine with a mass ratio of 1:1 for spraying. The performance test results are shown in Table 2.

[0038] The product performance testing result that table 2 embodiment 2 obtains

[00...

Embodiment 3

[0042] Component A: Weigh 32 parts of polyether polyol (functionality: 3, molecular weight: 5000), 18 parts of liquefied starch, 5 parts of ammonium bicarbonate, 24 parts of water, 12.5 parts of tris(2-chloropropyl) phosphate , 2 parts of foam stabilizer (L6868, American Momentive), 1 part of epoxy adduct of fatty acid and 3 parts of catalyst dimethylcyclohexylamine, 1.5 parts of tris(dimethylaminopropyl) hexahydrotriazine, 3 parts of three 1 part of ethylenediamine is mixed evenly, and packaged for later use;

[0043] Component B: Weigh 50 parts of polymethylene polyphenyl polyisocyanate, 10 parts of diphenylmethane diisocyanate, 20 parts of isocyanate prepolymer, 15 parts of tris(2-chloroethyl) phosphate, tri(phosphate) 5 parts of butoxyethyl) ester are stirred evenly, and packaged for subsequent use;

[0044] Mixing and curing: Add component A and component B into the spraying machine with a mass ratio of 1:1 for spraying. The performance test results are shown in Table 3....

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Abstract

The invention relates to an environment-friendly mineral low-temperature spraying material and a preparation method thereof, and belongs to the technical field of chemical engineering. The spraying material is prepared from a component A and a component B according to a mass ratio of 1:1, wherein the component A is prepared from the following raw materials in parts by weight: 25 to 40 parts of polyether polyol, 15 to 30 parts of liquefied starch, 5 to 10 parts of ammonium bicarbonate, 0 to 24 parts of water, 10 to 20 parts of flame-retardant agent A, 1 to 2 parts of foam stabilizer, 0.5 to 1 part of non-ionic anti-electrostatic agent, and 2 to 5.5 parts of catalyst; and the component B is prepared from the following raw materials in parts by weight: 70 to 90 parts of isocyanate, and 10 to 30 parts of flame-retardant agent B. The spraying material has the advantages that the ammonium bicarbonate is used for decomposing to produce gas and is used as the foaming agent, and a large amount of heat is decomposed and absorbed, so that the internal reaction temperature in the system is greatly reduced; by adopting the liquefied starch, the mechanical property of the material is improved, and meanwhile, the material can be biologically degraded; and the spraying material is suitable for the prevention of gas leakage of coal walls, enriching of gas, surface protection of coal wall, dust reduction and the like.

Description

technical field [0001] The invention relates to an environment-friendly low-temperature spraying material for mines and a preparation method thereof, belonging to the technical field of chemical industry. Background technique [0002] In the process of coal mining, a large number of roadways, broken coal walls and cavities will be formed. The residual gas in the coal seam will enter the roadways through the pores of the coal walls, and at the same time, the gas will also be enriched in the cavities and depressions, seriously threatening Coal mine safety production. The exposed coal rock will also increase the dust pollution in the roadway, affecting the health of coal miners. In order to solve these problems, it is necessary to seal the exposed coal walls and cavities. The main method of implementation is spraying. Although the inorganic spraying materials used for spraying are low in cost, they have poor cohesive force and are easy to crack. At the same time, dust is easil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/08C09D7/63C09D7/65C08J9/08C08G18/48
CPCC08G18/4883C08J9/08C08J2375/08C08J2403/02C08K2201/003C08K2201/014C08K2201/018C08L2201/04C08L2203/14C09D175/08C08L3/02C08K5/521C08K5/101C08K5/17C08K5/20
Inventor 刘玄李明友唐国涛郝德开张佳佳
Owner SHANDONG INOV NEW MATERIALS CO LTD
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