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Environmental-friendly harmless high-flame-retardant polymer material for plugging water and reinforcing coal and rock masses in coal mines and preparation method thereof

A polymer material and high flame-retardant technology, applied in the field of polyurethane materials, can solve problems such as environmental pollution and flame-retardant performance degradation, and achieve the effects of durable flame-retardant performance, enhanced rigidity, and excellent mechanical properties

Active Publication Date: 2020-01-10
SHANXI JINMEI GRP TECH RESEACH INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention provides an environmentally friendly and harmless high-flame-retardant polymer material for coal mine water plugging and reinforcement of coal rock mass and Preparation

Method used

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  • Environmental-friendly harmless high-flame-retardant polymer material for plugging water and reinforcing coal and rock masses in coal mines and preparation method thereof
  • Environmental-friendly harmless high-flame-retardant polymer material for plugging water and reinforcing coal and rock masses in coal mines and preparation method thereof
  • Environmental-friendly harmless high-flame-retardant polymer material for plugging water and reinforcing coal and rock masses in coal mines and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: The preparation method of phenolic phosphonate polyols is: 100g triphenyl phosphite, 50g DEG, 0.1g 2,6-di-tert-butyl p-cresol and 0.01g tetrabutyl titanate Ratio feeding in an autoclave to ensure the nitrogen environment in the autoclave, react at 135°C for 6 hours, cool down to 85°C, add 15g of formaldehyde, the reaction is exothermic, the temperature gradually rises to 105°C, and continue to react at 100°C for 4 hours. Remove unreacted formaldehyde, add 15g epoxy resin DYD-127, add ethylene oxide until the acid value drops below 5mgKOH / g, vacuum remove unreacted ethylene oxide, add 25g epoxy resin DYD-127 get the product. Phosphonate polyols with a phosphorus content of 4.88% were obtained after adsorption, filtration, distillation and other processes, and no hydrolysis was found during storage.

[0031] An environmentally friendly, harmless and highly flame-retardant polymer material for coal mine water plugging and reinforcement of coal rock mass. The ra...

Embodiment 2

[0032] Example 2: The preparation method of phenolic phosphonate polyols is: 150g triphenyl phosphite, 45g DEG, 0.1g 2,6-di-tert-butyl p-cresol and 0.01g tetrabutyl titanate Ratio feed in an autoclave to ensure the nitrogen environment in the autoclave, react at 135°C for 6 hours, cool down to 85°C, add 30g of formaldehyde, the reaction exotherms, the temperature gradually rises to 105°C, keep 100°C and continue to react for 4 hours. Remove unreacted formaldehyde, add 20g epoxy resin DYD-127, add ethylene oxide until the acid value drops below 5mgKOH / g, vacuum remove unreacted ethylene oxide, add 30g epoxy resin DYD-127 get the product. Phosphonate polyols with a phosphorus content of 5.45% were obtained after adsorption, filtration, distillation and other processes, and no hydrolysis was found during the storage period.

[0033] An environmentally friendly, harmless and highly flame-retardant polymer material for coal mine water plugging and reinforcement of coal rock mass. ...

Embodiment 3

[0034] Example 3: The preparation method of phenolic phosphonate polyols is: 170g triphenyl phosphite, 55g DEG, 0.1g 2,6-di-tert-butyl p-cresol and 0.01g tetrabutyl titanate Proportionally feed in an autoclave to ensure the nitrogen environment in the autoclave, react at 135°C for 6 hours, cool down to 85°C, add 35g of formaldehyde, the reaction is exothermic, the temperature gradually rises to 105°C, and continue to react at 100°C for 4 hours. Remove unreacted formaldehyde, add 40g epoxy resin DYD-127, add ethylene oxide until the acid value drops below 5mgKOH / g, vacuum remove unreacted ethylene oxide, add 35g epoxy resin DYD-127 get the product. Phosphonate polyols with a phosphorus content of 5.07% were obtained after adsorption, filtration, distillation and other processes, and no hydrolysis was found during the storage period.

[0035] An environmentally friendly, harmless and highly flame-retardant polymer material for coal mine water plugging and reinforcement of coal ...

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Abstract

The invention belongs to the technical field of polyurethane materials, and provides an environment-friendly harmless high-flame-retardant polymer material for plugging water and reinforcing coal androck masses in coal mines and a preparation method thereof in order to solve the problems of reduced flame retardancy and environmental pollution caused by migration of flame retardant elements of thepolymer material for coal mine reinforcement. The environment-friendly harmless high-flame-retardant polymer material is prepared by mixing two components of a main agent and a curing agent, whereinthe main agent is prepared by mixing phenolic phosphate polyol, polyether polyol, polyester polyol, a surfactant and a catalyst according to a certain weight ratio; and the curing agent is any one ora mixture of two of polymethylene polyphenyl isocyanate, diphenylmethane diisocyanate and toluene diisocyanate. The environment-friendly harmless high-flame-retardant polymer material does not containany plasticizer; due to the existence of phenolic phosphonate polyol, not only the phosphorus content is high, but also a phosphorus-rich coke layer with better thermal stability can be generated when the material is burnt and decomposed; the phosphorus-rich coke layer can inhibit the continuous combustion of matrix resin, effectively inhibits the generation of combustible gas, and improves the storage stability of the polyol, the bonding strength of the material and the hydrolysis resistance.

Description

technical field [0001] The invention belongs to the technical field of polyurethane materials, and in particular relates to an environment-friendly, harmless and highly flame-retardant polymer material for water blocking and reinforcing coal rock mass in coal mines and a preparation method thereof. Background technique [0002] During the excavation process of coal mine roadway, broken or loose coal rock mass often leads to coal mine accidents such as roof fall and chipping, which not only seriously endangers the life safety of miners, but also seriously affects the production efficiency of coal mining enterprises. Therefore, in the production process of coal mines, the broken coal rock mass is generally reinforced by grouting. There are many types of grouting materials, which are generally divided into inorganic grouting materials and organic grouting materials. Inorganic materials are widely used in water glass cement two-liquid grouting. The material has the advantages o...

Claims

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Application Information

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IPC IPC(8): C08G18/48C08G18/58C08G18/42C08G59/14C09K8/44
CPCC08G18/4045C08G18/42C08G18/4804C08G18/587C08G59/1488C09K8/426C09K8/44
Inventor 都海龙王磊安晋松韩延康王俊杰刘延磊申进波潘振勇原小路王耀西马晋琴
Owner SHANXI JINMEI GRP TECH RESEACH INST
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