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Organic/inorganic hybrid injection filling material and preparation method thereof

A kind of grouting filling material and inorganic technology, applied in the field of modified polymer materials, can solve the problems of expensive use, poor mechanical properties, low reaction heat release, etc., and achieve high foaming ratio, good flame retardancy, and low viscosity Effect

Active Publication Date: 2014-12-24
BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Polyurethane resin is used as a filling material, which has the advantages of high foaming ratio, less filling amount, fast reaction speed, and convenient construction. A large amount of heat, the highest reaction temperature is too high, there is a potential danger of burning coal seams or causing gas explosions, leading to safety accidents, so today's more and more emphasis on safety production will limit its application; phenolic resin and urea-formaldehyde resin are flame retardant Good performance, low reaction heat release, moderate expansion ratio, but poor mechanical properties, and the curing agent is a strong acid, which is highly corrosive, and strict requirements for construction and application limit its use.

Method used

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  • Organic/inorganic hybrid injection filling material and preparation method thereof
  • Organic/inorganic hybrid injection filling material and preparation method thereof
  • Organic/inorganic hybrid injection filling material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1. Preparation of organic-inorganic hybrid grouting filling material

[0053]In the reaction kettle, first add 95wt% sodium silicate, start stirring at 25°C, slowly add 5wt% 2,4,6-tris[(dimethylamino)methyl]phenol dropwise, finish adding dropwise in 1 hour, and continue stirring After half an hour, the material was discharged and packaged to obtain component A.

[0054] In the interlayer reactor, first add 15wt% low unsaturation polyether polyol MN-700 (polypropylene oxide ether triol with a number average molecular weight of 700), at a temperature of 105 to 110°C (during the reaction The temperature fluctuates), and the vacuum degree is dehydration under the condition of -0.1MPa for 2.5 hours, cooling to 50°C, adding 70wt% polymethylene polyphenylisocyanate M20S and 2wt% 1,4-butanediol, and Keep the reaction for 30 minutes, heat up to 72°C, keep the temperature constant, react for 1 hour, cool down to 40°C, add 10wt% dibutyl phthalate and 3wt% additives (2.4wt...

Embodiment 2

[0056] Example 2. Preparation of organic-inorganic hybrid grouting filling material

[0057] In the reaction kettle, first add 93wt% potassium silicate, start stirring at 25°C, slowly add 7wt% pentamethyldiethylenetriamine dropwise, finish adding dropwise in 1 hour, continue stirring for half an hour, discharge the material, and pack to obtain the components a.

[0058] In the sandwich reactor, first add 25wt% polyether polyol DL-1000 (polypropylene oxide ether diol with a number average molecular weight of 1000), at a temperature of 105-110°C (the temperature fluctuates during the reaction process) ), the vacuum degree is -0.08Mpa, dehydration for 2.5 hours, cool down to 45°C, add 60wt% diphenylmethane diisocyanate, and keep the reaction for 20min, heat up to 80°C, keep the temperature constant, react for 2 hours, cool down to 50°C, add 13wt% diisononyl phthalate and 3wt% additives (2.5wt% AK-8803 foam stabilizer, 0.2wt% antioxidant 168 and 0.3wt% UV-P), stir well , dischar...

Embodiment 3

[0060] Example 3. Preparation of organic-inorganic hybrid grouting filling material

[0061] In the reaction kettle, first add 90wt% sodium silicate, start stirring at 25°C, slowly add 10wt% 1,3,5-tris(dimethylaminopropyl)hexahydrotriazine dropwise, and drop it in 1 hour. Continue to stir for half an hour, discharge, and pack to obtain component A.

[0062] In the interlayer reactor, first add 10wt% polyether polyol DL-400 (polypropylene oxide ether diol with a number average molecular weight of 400), at a temperature of 105-110°C (the temperature fluctuates during the reaction process) ), the vacuum degree is -0.09Mpa, dehydrated for 3 hours, cooled to 40°C, added 75wt% polymethylene polyphenylisocyanate PM-200 and 3wt% hexanediol, and kept the reaction for 30min, then raised the temperature to 70°C, Keep the temperature constant, react for 1.5 hours, cool down to 40°C, add 10wt% diethylene glycol butyl ether acetate and 2wt% additives (1.5wt% AK-8805 foam stabilizer and 0.5...

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Abstract

The invention discloses an organic / inorganic hybrid injection filling material and a preparation method thereof. The organic / inorganic hybrid injection filling material comprises a component A and a component B which are independently packaged, wherein the component A is composed of silicate and a catalyst; and the component B is prepared from any one of the following 1)-4): 1) polyether glycol, polyisocyanate and a plasticizer; 2) polyether glycol, a chain extender, polyisocyanate and a plasticizer; 3) polyether glycol, polyisocyanate, a plasticizer and assistants; and 4) polyether glycol, a chain extender, polyisocyanate, a plasticizer and assistants. The catalyst is at least one of triethylenediamine, trimethyl benzylamine, pentamethyl diethylenetriamine, N-ethyl morpholine, 1,3,5-tri(dimethylaminopropyl)hexahydrotriazine and 2,4,6-tri(dimethylaminomethyl)phenol. The material has the advantages of low viscosity, adjustable reaction time, low maximum reaction temperature, high expansion ratio after curing, favorable flame retardancy, high safety, environment protection and low price, and is convenient for construction.

Description

technical field [0001] The invention relates to an organic-inorganic hybrid grouting filling material and a preparation method thereof, belonging to the field of modified polymer materials. Background technique [0002] my country has large coal reserves, complex geological conditions, complex coal seams, serious safety problems, and generally low production efficiency. my country's coal mines are mainly underground mining, which requires the excavation of large-scale underground roadways. The total annual excavation footage of roadways is about 110 million kilometers, of which 84% are coal and semi-coal rock roads. The scale is huge and ranks first in the world. The characteristics of my country's coal mine sedimentary strata are: low strength, fragmentation, high in-situ stress; small coal pillars for roadway protection, and strong dynamic pressure influence. Among them, roadway support, coal wall filling of working face, roadway filling, roadway high-risk area filling, w...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/66C08G18/48C08K13/02C08K3/34C04B28/26C04B24/32C04B24/12
CPCC04B24/12C04B24/32C04B28/26C08G18/3206C08G18/4829C08G18/6674C08G18/7657C08K3/34C08K13/02
Inventor 郑先军王新锋李红英
Owner BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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