Halogen-free high flame retardant polymer material for reinforcing coal and rock mass in coal mines and preparation method thereof

A polymer material and high flame-retardant technology, applied in mining equipment, earthwork drilling, wellbore/well parts, etc., can solve the problems of flame-retardant performance degradation, environmental pollution, etc., and achieve moderate viscosity, good hydrolytic stability, The effect of suppressing the generation of combustible gas

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

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Problems solved by technology

[0008] The present invention provides a halogen-free high-flame-retardant polymer material for coal mine reinforcement and its preparation in order to solve the problems of reduced flame retardant properties and environmental pollution caused by the migration of flame retardant elements in the current polymer materials for coal mine reinforcement. method

Method used

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  • Halogen-free high flame retardant polymer material for reinforcing coal and rock mass in coal mines and preparation method thereof
  • Halogen-free high flame retardant polymer material for reinforcing coal and rock mass in coal mines and preparation method thereof
  • Halogen-free high flame retardant polymer material for reinforcing coal and rock mass in coal mines and preparation method thereof

Examples

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Embodiment 1

[0031] Example 1: The preparation method of epoxy phosphate polyol is: place 100g triethyl phosphate, 0.2g tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol 2L four-neck bottle, and ensure the nitrogen environment in the four-neck bottle, then slowly raise the temperature to 80°C, add 50g of phosphorus pentoxide, keep the temperature at 85°C for 5 hours, and start adding 100g of trimethylol dropwise after obtaining a transparent solution Phosphine oxide, keep reflux and condense, continue to react for 3 hours, add 100g of epoxy resin DYD-127, 0.05g of stannous octoate, control the temperature at 85 ℃, and feed 15g of ethylene oxide until the acid value is less than 2mgKOH / g. Add 25g of epoxy resin DYD-127. After adsorption, filtration, distillation and other processes, the epoxy phosphate polyol with a phosphorus content of 15.63% was obtained, and no hydrolysis phenomenon was found during the storage period.

[0032] A halogen-free high-flame-retard...

Embodiment 2

[0033] Embodiment 2: The preparation method of epoxy phosphate ester polyol is: put 130g triethyl phosphate, 0.2g tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol 2L four-neck bottle, and ensure the nitrogen environment in the four-neck bottle, then slowly raise the temperature to 80°C, add 55g of phosphorus pentoxide, keep the temperature at 85°C for 5 hours, and start adding 120g of trimethylol dropwise after obtaining a transparent solution Phosphine oxide, keep reflux and condense, continue to react for 3 hours, add 180g of epoxy resin DYD-127, 0.05g of stannous octoate, control the temperature at 85 ℃, and feed 20g of ethylene oxide until the acid value is less than 2mgKOH / g. Add 30g of epoxy resin DYD-127. After adsorption, filtration, distillation and other processes, the epoxy phosphate polyol with a phosphorus content of 13.58% was obtained, and no hydrolysis phenomenon was found during the storage period.

[0034] A halogen-free high-flame...

Embodiment 3

[0035] Example 3: The preparation method of epoxy phosphate polyol is: place 150g triethyl phosphate, 0.2g tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol 2L four-neck bottle, and ensure the nitrogen environment in the four-neck bottle, then slowly raise the temperature to 80°C, add 80g of phosphorus pentoxide, keep the temperature at 85°C for 5 hours, and start adding 150g of trimethylol dropwise after obtaining a transparent solution Phosphine oxide, keep reflux and condense, continue to react for 3 hours, add 110g of epoxy resin DYD-127, 0.05g of stannous octoate, control the temperature at 85 ℃, and feed 25g of ethylene oxide until the acid value is less than 2mgKOH / g. Add 25g of epoxy resin DYD-127. After adsorption, filtration, distillation and other processes, the epoxy phosphate polyol with a phosphorus content of 17.31% was obtained, and no hydrolysis phenomenon was found during the storage period.

[0036] A halogen-free high-flame-retard...

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Abstract

The invention belongs to the technical field of polymer materials, and provides a halogen-free high flame retardant polymer material for reinforcing coal and rock masses in coal mines and a preparation method thereof in order to solve the problems of lowered flame retardant performance, environmental pollution and the like caused by migration of flame retardant elements of the polymer material forreinforcing the coal mines. The halogen-free high flame retardant polymer material is prepared from two components of a main agent and a curing agent, wherein the main agent is epoxy phosphate polyol, polyether polyol, polyester polyol, a surfactant and a catalyst which are mixed according to the weight ratio of 15-45: 10-35: 7-25: 0.5-1: 0.5-2; and the curing agent is isocyanate. Due to the presence of epoxy phosphate polyol, not only the phosphorus content is high, but also a phosphorus-rich coke layer with good thermal stability can be generated during the combustion and decomposition of the material. The layer can inhibit the continuous combustion of the matrix resin, effectively inhibits the generation of combustible gas, and improves the storage stability of the polyol, the bondingstrength of the material and the hydrolysis resistance.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a halogen-free high-flame-resistance polymer material for strengthening coal and rock mass in coal mines and a preparation method thereof. Background technique [0002] Grouting engineering is widely used in mines, tunnels and other underground engineering reinforcement and anti-seepage plugging, to improve the mechanical strength and deformation modulus of rock-soil (coal) layers, to strengthen the integrity of rock-soil (coal) layers; or to cut off seepage water flow, Reduce the permeability of rock and soil (coal) layers, and improve the anti-seepage capacity of the formation. For underground grouting engineering, grouting materials and grouting theory are two important research contents in the field of grouting engineering. Polyurethane grouting material is an important research direction in recent years. Compared with cement, cement-sodium silicate, ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/42C08G18/58E21B33/13E21D9/00
CPCC08G18/4045C08G18/42C08G18/4804C08G18/587E21B33/13E21D9/002
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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