CN113943482A - Polyurethane material for coal mine reinforced coal rock mass - Google Patents
Polyurethane material for coal mine reinforced coal rock mass Download PDFInfo
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- CN113943482A CN113943482A CN202111177830.8A CN202111177830A CN113943482A CN 113943482 A CN113943482 A CN 113943482A CN 202111177830 A CN202111177830 A CN 202111177830A CN 113943482 A CN113943482 A CN 113943482A
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- flame retardant
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- 239000003245 coal Substances 0.000 title claims abstract description 42
- 239000000463 material Substances 0.000 title claims abstract description 23
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 19
- 239000004814 polyurethane Substances 0.000 title claims abstract description 19
- 239000011435 rock Substances 0.000 title claims description 15
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003063 flame retardant Substances 0.000 claims abstract description 28
- 229920005862 polyol Polymers 0.000 claims abstract description 22
- 150000003077 polyols Chemical class 0.000 claims abstract description 22
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 17
- 229920000570 polyether Polymers 0.000 claims abstract description 17
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 15
- 239000010452 phosphate Substances 0.000 claims abstract description 15
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 13
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- 150000001875 compounds Chemical class 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 8
- 239000010439 graphite Substances 0.000 claims abstract description 8
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 8
- 239000012188 paraffin wax Substances 0.000 claims abstract description 8
- 239000004359 castor oil Substances 0.000 claims abstract description 7
- 235000019438 castor oil Nutrition 0.000 claims abstract description 7
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 5
- 125000000524 functional group Chemical group 0.000 claims abstract description 4
- 229920001228 polyisocyanate Polymers 0.000 claims abstract description 3
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 3
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 5
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 5
- SXWZSWLBMCNOPC-UHFFFAOYSA-M potassium;6-methylheptanoate Chemical compound [K+].CC(C)CCCCC([O-])=O SXWZSWLBMCNOPC-UHFFFAOYSA-M 0.000 claims description 5
- 239000012970 tertiary amine catalyst Substances 0.000 claims description 5
- 239000003607 modifier Substances 0.000 claims description 4
- 239000004014 plasticizer Substances 0.000 claims description 4
- -1 sodium alkyl benzene Chemical class 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 2
- 229940077388 benzenesulfonate Drugs 0.000 claims description 2
- 150000003016 phosphoric acids Chemical class 0.000 claims description 2
- 125000005498 phthalate group Chemical group 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 abstract description 13
- 238000006243 chemical reaction Methods 0.000 abstract description 11
- 239000000126 substance Substances 0.000 abstract description 5
- 229920005749 polyurethane resin Polymers 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005065 mining Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000012948 isocyanate Substances 0.000 description 4
- 150000002513 isocyanates Chemical class 0.000 description 4
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 229920000538 Poly[(phenyl isocyanate)-co-formaldehyde] Polymers 0.000 description 3
- ITVPBBDAZKBMRP-UHFFFAOYSA-N chloro-dioxido-oxo-$l^{5}-phosphane;hydron Chemical compound OP(O)(Cl)=O ITVPBBDAZKBMRP-UHFFFAOYSA-N 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010017076 Fracture Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006471 dimerization reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000005829 trimerization reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/22—Catalysts containing metal compounds
- C08G18/225—Catalysts containing metal compounds of alkali or alkaline earth metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/22—Catalysts containing metal compounds
- C08G18/24—Catalysts containing metal compounds of tin
- C08G18/244—Catalysts containing metal compounds of tin tin salts of carboxylic acids
- C08G18/246—Catalysts containing metal compounds of tin tin salts of carboxylic acids containing also tin-carbon bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/36—Hydroxylated esters of higher fatty acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/6696—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/36 or hydroxylated esters of higher fatty acids of C08G18/38
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention belongs to the technical field of chemical grouting reinforcement of coal petrography, and particularly relates to a polyurethane material for reinforcing coal petrography in a coal mine; the modified polyurethane resin comprises a component A and a component B, wherein the component A comprises polyether polyol with a functional group of 6, castor oil polyol and an auxiliary agent, and the component B comprises polyisocyanate prepolymer; the volume ratio of the component A to the component B is 1-1.5: 1; the auxiliary agent comprises a compound flame retardant and a catalyst, the compound flame retardant is formed by mixing chlorinated paraffin, flake graphite and a phosphate flame retardant according to the mass ratio of 1:1-3:0.5, and the addition amount of the phosphate flame retardant is less than or equal to 4% of the mass of the component A; the invention has lower reaction temperature, excellent mechanical property and flame retardant property, and is suitable for the safe reinforcement of the coal seam under the mine.
Description
Technical Field
The invention belongs to the technical field of chemical grouting reinforcement of coal petrography, and relates to a polyurethane material for reinforcing coal petrography in a coal mine.
Background
During the underground coal mine excavation construction process, because of geological structures, primary fractures, broken coal rock bodies formed due to the influence of mining pressure and the like, roadway cofferdams, roofs, working faces and the like, particularly loose coal (rock) bodies are prone to collapse, and safety production is affected. Particularly, with the popularization of large-scale comprehensive mining and excavating equipment, a mining roadway, an underground chamber, a working face, a top plate and the like need to be maintained in the coal mining process. The chemical grouting reinforcement technology can timely change the loose structure of surrounding rocks and improve the overall strength of rock mass, thereby improving the construction speed, ensuring the normal succession of a working face and being worthy of being applied when a coal mine passes fault and other abnormal conditions. In addition, in other links of coal production, such as: the technology can also be applied to treatment under the conditions of caving, roof caving and the like of the coal mining surface. Therefore, the chemical grouting reinforcement technology is a practical supporting technology for ensuring the safety of mine production. The underground environment is special, and the adopted pouring material is required to have the characteristics of good viscosity with the coal body, large effective consolidation range, certain strength, good sealing property, light weight, stable chemical property and the like. In recent years, scholars at home and abroad have conducted a great deal of research on the polyurethane material for reinforcement and applied to reinforcement of loose coal bodies, so that a good effect is achieved, and the problem of mine production is solved.
For polyurethane polymer grouting reinforcement materials applied to underground coal mines, in addition to the requirements on mechanical properties, in order to ensure the safety of underground construction, the polyurethane polymer grouting reinforcement materials also need to have the characteristics of higher flash point, environmental protection, no toxicity, lower reaction temperature, higher flame retardance and the like, however, the existing polyurethane grouting reinforcement materials for coal mines cannot meet all the requirements at the same time, the reaction temperature is mostly about 140 ℃, spontaneous combustion of coal is easily caused, and the polyurethane polymer grouting reinforcement materials are not favorable for underground safety reinforcement.
Disclosure of Invention
The polyurethane material for reinforcing coal and rock mass in coal mines overcomes the defects of the prior art, and has the advantages of low reaction temperature, excellent mechanical property and flame retardant property.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a polyurethane material for reinforcing coal and rock masses in coal mines comprises a component A and a component B, wherein the component A comprises polyether polyol with a functional group of 6, castor oil polyol and an auxiliary agent, and the component B comprises polyisocyanate prepolymer; the volume ratio of the component A to the component B is 1-1.5: 1.
The auxiliary agent comprises a compound flame retardant and a catalyst, wherein the catalyst is formed by mixing dibutyltin dilaurate, a tertiary amine catalyst and potassium isooctanoate according to the mass ratio of 1:1: 0.3-0.5; the compound flame retardant is prepared by mixing chlorinated paraffin, flake graphite and a phosphate flame retardant according to the mass ratio of 1:1-3:0.5, wherein the addition amount of the phosphate flame retardant is less than or equal to 4% of the mass of the component A.
Preferably, the auxiliary agent further comprises a modifier, a surfactant and a plasticizer.
Preferably, the modifier is a silane coupling agent, the surfactant is sodium alkyl benzene sulfonate, and the plasticizer is phthalate.
Preferably, the phosphate flame retardant is any one of phosphate diols OP550 and OP560 and halogenated phosphoric acid.
Preferably, the polyether polyol consists of 20-30 parts by weight of polyether polyol JH303 and 30-50 parts by weight of polyether polyol GY 420.
Preferably, the volume ratio of the component A to the component B is 1: 1.
Preferably, the compound flame retardant is prepared by mixing chlorinated paraffin, flake graphite and phosphate flame retardant according to the mass ratio of 1:1:0.5
Compared with the prior art, the invention has the following beneficial effects:
the method utilizes the polyether polyol with multiple functionality degrees to increase the crosslinking degree of reactants and obviously improve the strength of the product; the castor oil polyalcohol sample is used for replacing partial polyether polyalcohol with six functional groups, so that the reaction rate is improved, and the cost is reduced.
The catalyst adopted by the invention reduces the dimerization and trimerization reactions of isocyanate and lowers the reaction temperature. On the basis, the compound flame retardant plays a synergistic role, and the flame retardant property of the polyurethane grouting material can be obviously improved.
The reaction temperature of the reinforcing material is low and is below 100 ℃; the mechanical property is excellent, wherein the compressive strength is more than 50 Mpa; has high flame retardance, can realize self-extinguishing within 2s from fire, and is suitable for safe reinforcement of an underground coal seam.
The reinforcing material disclosed by the invention is low in halogen content, safe and environment-friendly, simple in production process and rapid in site construction.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail with reference to the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solutions of the present invention are described in detail below with reference to examples, but the scope of protection is not limited thereto.
Example 1
Sequentially adding polyether polyol JH 30330 Kg, polyether polyol GY 42040 Kg, chlorophosphate FR-30010 Kg and castor oil polyol 20Kg into a reaction kettle, vacuumizing at the temperature of 40-50 ℃ under the negative pressure of 0.1MPa for dewatering for 1 hour, then sequentially adding chlorinated paraffin 2Kg, flake graphite 2Kg, phosphate flame retardant 1Kg and catalyst 10Kg, stirring at normal temperature and normal pressure for 1 hour, and uniformly mixing to obtain the component A material. The component B is polymethylene polyphenyl isocyanate with the trade name of PM-200, and is a mixture containing a certain amount of isocyanate with higher functionality and diphenylmethane diisocyanate. The catalyst is prepared by mixing dibutyltin dilaurate, a tertiary amine catalyst and potassium isooctanoate according to the mass ratio of 1:1: 0.4.
And (3) subjecting the component A and the component B to a pneumatic double-liquid grouting pump according to the proportion of 1:1 to obtain a solidified body, and detecting the performance of the solidified body, wherein the foaming times are 1.2 times, the compressive strength (10% compression deformation) is 100MPa, the tensile strength is 35MPa, the bonding strength is 4.6MPa, and the flame retardant property is as follows: the alcohol burner method has the flame combustion time of 2.35s, the flameless combustion time of 0.56s and the flame extension length of 95 mm; the method conforms to the technical standard of AQ 1089-2011.
Example 2
Sequentially adding polyether polyol JH 30320 Kg, polyether polyol GY 42050 Kg, chlorophosphate FR-30020 Kg and castor oil polyol 30Kg into a reaction kettle, vacuumizing at the negative pressure of 0.1MPa and the temperature of 40-50 ℃ to remove water for 1 hour, then sequentially adding chlorinated paraffin 4 Kg, flake graphite 4 Kg, phosphate flame retardant 2Kg and catalyst 20Kg, stirring at normal temperature and normal pressure for 1 hour, and uniformly mixing to obtain the component A material. The component B is polymethylene polyphenyl isocyanate with the trade name of PM-200, and is a mixture containing a certain amount of isocyanate with higher functionality and diphenylmethane diisocyanate. The catalyst is prepared by mixing dibutyltin dilaurate, a tertiary amine catalyst and potassium isooctanoate according to the mass ratio of 1:1: 0.3.
And (3) subjecting the component A and the component B to a pneumatic double-liquid grouting pump according to the proportion of 1:1 to obtain a solidified body, and detecting the performance of the solidified body, wherein the foaming times are 1.2 times, the compression strength (10% compression deformation) is 95MPa, the tensile strength is 30MPa, the bonding strength is 4.2MPa, and the flame retardant property is as follows: the alcohol burner method has the flame combustion time of 2.12s, the flameless combustion time of 0.41s and the flame extension length of 85 mm; the method conforms to the technical standard of AQ 1089-2011.
Example 3
Sequentially adding polyether polyol JH 30330 Kg, polyether polyol GY 42050 Kg, chlorophosphate FR-30015 Kg and castor oil polyol 25Kg into a reaction kettle, vacuumizing at the negative pressure of 0.1MPa and the temperature of 40-50 ℃ to remove water for 1 hour, then sequentially adding chlorinated paraffin 3Kg, flake graphite 3Kg, phosphate flame retardant 1.5Kg and catalyst 15Kg, stirring at normal temperature and normal pressure for reaction for 1 hour, and uniformly mixing to obtain the component A material. The component B is polymethylene polyphenyl isocyanate with the trade name of PM-200, and is a mixture containing a certain amount of isocyanate with higher functionality and diphenylmethane diisocyanate. The catalyst is prepared by mixing dibutyltin dilaurate, a tertiary amine catalyst and potassium isooctanoate according to the mass ratio of 1:1: 0.5.
And (3) subjecting the component A and the component B to a pneumatic double-liquid grouting pump according to the proportion of 1:1 to obtain a solidified body, and detecting the performance of the solidified body, wherein the foaming times are 1.2 times, the compressive strength (10% of compression deformation) is 96MPa, the tensile strength is 32MPa, the bonding strength is 4.3MPa, and the flame retardant property is as follows: the alcohol burner method has the flame combustion time of 2.47s, the flameless combustion time of 0.55s and the flame extension length of 89 mm; the method conforms to the technical standard of AQ 1089-2011.
While the invention has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The polyurethane material for reinforcing coal and rock mass in coal mines is characterized by comprising a component A and a component B, wherein the component A comprises polyether polyol with a functional group of 6, castor oil polyol and an auxiliary agent, and the component B comprises polyisocyanate prepolymer; the volume ratio of the component A to the component B is 1-1.5: 1; the auxiliary agent comprises a compound flame retardant and a catalyst, wherein the catalyst is formed by mixing dibutyltin dilaurate, a tertiary amine catalyst and potassium isooctanoate according to the mass ratio of 1:1: 0.3-0.5; the compound flame retardant is prepared by mixing chlorinated paraffin, flake graphite and a phosphate flame retardant according to the mass ratio of 1:1-3:0.5, wherein the addition amount of the phosphate flame retardant is less than or equal to 4% of the mass of the component A.
2. The polyurethane material for the coal mine reinforced coal rock mass according to claim 1, wherein the auxiliary agent further comprises a modifier, a surfactant and a plasticizer.
3. The polyurethane material for coal mine reinforced coal rock mass according to claim 2, wherein the modifier is a silane coupling agent, the surfactant is sodium alkyl benzene sulfonate, and the plasticizer is phthalate.
4. The polyurethane material for coal mine reinforced coal rock mass according to claim 1, wherein the phosphate ester flame retardant is any one of phosphate diol OP550, OP560 and halogenated phosphoric acid.
5. The polyurethane material for coal mine reinforced coal rock mass according to claim 1, wherein the polyether polyol consists of 20-30 parts by weight of polyether polyol JH303 and 30-50 parts by weight of polyether polyol GY 420.
6. The polyurethane material for the coal mine reinforced coal rock mass according to claim 1, wherein the volume ratio of the component A to the component B is 1: 1.
7. The polyurethane material for coal mine reinforced coal rock mass according to claim 1, wherein the compound flame retardant is prepared by mixing chlorinated paraffin, flake graphite and phosphate flame retardant according to a mass ratio of 1:1: 0.5.
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| CN202111177830.8A CN113943482A (en) | 2021-10-09 | 2021-10-09 | Polyurethane material for coal mine reinforced coal rock mass |
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| CN202111177830.8A CN113943482A (en) | 2021-10-09 | 2021-10-09 | Polyurethane material for coal mine reinforced coal rock mass |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105330814A (en) * | 2014-08-06 | 2016-02-17 | 上海茨夫新型建筑材料有限公司 | Polyurethane reinforcing material for reinforcing coal and rock mass in coal mine |
| CN109021204A (en) * | 2018-08-17 | 2018-12-18 | 北京瑞诺安科新能源技术有限公司 | A kind of low-heat type polyurethane consolidation by grouting material |
| CN112142946A (en) * | 2020-08-21 | 2020-12-29 | 煤炭科学技术研究院有限公司 | Coal mine reinforcing material prepared from vegetable oil polyalcohol and preparation method thereof |
| CN112142950A (en) * | 2020-08-21 | 2020-12-29 | 煤炭科学技术研究院有限公司 | High-performance coal mine reinforcing material and preparation method thereof |
| CN112500696A (en) * | 2020-11-17 | 2021-03-16 | 山西潞安晋安矿业工程有限责任公司 | High-performance organic mine reinforcing material |
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- 2021-10-09 CN CN202111177830.8A patent/CN113943482A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105330814A (en) * | 2014-08-06 | 2016-02-17 | 上海茨夫新型建筑材料有限公司 | Polyurethane reinforcing material for reinforcing coal and rock mass in coal mine |
| CN109021204A (en) * | 2018-08-17 | 2018-12-18 | 北京瑞诺安科新能源技术有限公司 | A kind of low-heat type polyurethane consolidation by grouting material |
| CN112142946A (en) * | 2020-08-21 | 2020-12-29 | 煤炭科学技术研究院有限公司 | Coal mine reinforcing material prepared from vegetable oil polyalcohol and preparation method thereof |
| CN112142950A (en) * | 2020-08-21 | 2020-12-29 | 煤炭科学技术研究院有限公司 | High-performance coal mine reinforcing material and preparation method thereof |
| CN112500696A (en) * | 2020-11-17 | 2021-03-16 | 山西潞安晋安矿业工程有限责任公司 | High-performance organic mine reinforcing material |
Non-Patent Citations (1)
| Title |
|---|
| 李俊贤主编: "《塑料工业手册》", 31 July 1997, 化学工业出版社 * |
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