CN114921235A - Silicate modified polyurethane material and preparation method thereof - Google Patents
Silicate modified polyurethane material and preparation method thereof Download PDFInfo
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- CN114921235A CN114921235A CN202210635449.XA CN202210635449A CN114921235A CN 114921235 A CN114921235 A CN 114921235A CN 202210635449 A CN202210635449 A CN 202210635449A CN 114921235 A CN114921235 A CN 114921235A
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- silicate
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- 239000000463 material Substances 0.000 title claims abstract description 89
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 23
- 239000004814 polyurethane Substances 0.000 title claims abstract description 23
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 43
- 239000000203 mixture Substances 0.000 claims abstract description 30
- 239000011435 rock Substances 0.000 claims abstract description 20
- 239000003245 coal Substances 0.000 claims abstract description 19
- 239000011268 mixed slurry Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 5
- 239000000654 additive Substances 0.000 claims abstract description 3
- 230000000996 additive effect Effects 0.000 claims abstract description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 14
- 239000012948 isocyanate Substances 0.000 claims description 7
- 150000002513 isocyanates Chemical class 0.000 claims description 7
- 239000004115 Sodium Silicate Substances 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 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 description 5
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 5
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 5
- 239000003063 flame retardant Substances 0.000 claims description 5
- 239000004014 plasticizer Substances 0.000 claims description 5
- 229920000570 polyether Polymers 0.000 claims description 5
- 229920005862 polyol Polymers 0.000 claims description 5
- 150000003077 polyols Chemical class 0.000 claims description 5
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 claims description 5
- 235000019871 vegetable fat Nutrition 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 5
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 abstract description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 235000011187 glycerol Nutrition 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 229920002396 Polyurea Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- SEBPBUWRSRLFQT-UHFFFAOYSA-N hydroperoxy(trihydroxy)silane Chemical compound OO[Si](O)(O)O SEBPBUWRSRLFQT-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/428—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for squeeze cementing, e.g. for repairing
-
- 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
- C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
- C08G18/3893—Low-molecular-weight compounds having heteroatoms other than oxygen containing silicon
- C08G18/3895—Inorganic compounds, e.g. aqueous alkalimetalsilicate solutions; Organic derivatives thereof containing no direct silicon-carbon bonds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Polyurethanes Or Polyureas (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention relates to the technical field of grouting materials, in particular to a silicate modified polyurethane material and a preparation method thereof, wherein the material is a two-component grouting material, and comprises a component A and a component B in a volume ratio of 1:1, wherein the component A is a silicate mixture, and the component B is a combined additive; the preparation method comprises the following steps: s1, respectively adding the component A main material and the component B main material into the reaction kettle A and the reaction kettle B according to the mixture ratio; s2, starting the stirring and circulating functions of the reaction kettle, and respectively and slowly dripping the component A small materials and the component B small materials into the A, B reaction kettle to mix the materials; s3, continuously working the reaction kettle for 20-30 min to fully and uniformly mix the materials; and S4, mixing the component A mixture and the component B mixture to obtain mixed slurry for grouting when in use. The material of the invention can react and solidify quickly after being injected into the crushed coal and the rock mass, thus realizing the reinforcement of the crushed coal and the rock mass and the plugging of the cracks thereof.
Description
Technical Field
The invention relates to the technical field of grouting materials, in particular to a silicate modified polyurethane material and a preparation method thereof.
Background
Along with the gradual deepening of the coal mining depth, the geological environment is more and more complex, complex geological conditions are met in roadway tunneling and coal mining, the wall caving and roof leakage of a working face can be often caused, the safety is poor, once surrounding rocks and the coal seam are too large in clearance or broken and loose in mining, the mining difficulty can be increased, and accidents are easily caused. The continuity of the working surface can not be ensured, and the production of the working surface is seriously influenced.
The common grouting material has long setting time, cannot form effective reinforcing strength in short time, and needs to be prepared by one material in order to avoid influencing the construction progress on site.
Disclosure of Invention
The invention aims to solve the technical problem of providing a silicate modified polyurethane material and a preparation method thereof, wherein the material can quickly react and solidify after being injected into crushed coal and rock mass, so that the reinforcement of the crushed coal and rock mass and the plugging of cracks of the crushed coal and rock mass are realized.
In order to solve the technical problem, the invention adopts the following technical scheme:
a silicate modified polyurethane material is a two-component grouting material, and comprises a component A and a component B in a volume ratio of 1:1, wherein the component A is a silicate mixture, and the component B is a combined additive; when the material is used, the component A and the component B are mixed and injected into the crushed coal and the rock mass by an injection pump, and then the mixture reacts rapidly and solidifies to form plugs for reinforcing the crushed coal, the rock mass and cracks thereof.
Preferably, the component A comprises 45-55% of sodium silicate, 5-15% of glycerin, 1-4% of dimethyl 2-ethanol and 30-50% of water in parts by weight.
Preferably, the component B comprises 70-80% of isocyanate, 5-15% of polyether polyol, 2-7% of polyurethane, 1-5% of plasticizer, 1-4% of composite vegetable fat, 1-5% of flame retardant and 1-4% of sodium stearate in parts by weight.
Preferably, the reaction curing time after the material is injected is 160-200 s.
Preferably, the highest reaction temperature of the A component and the B component after mixing is less than or equal to 100 ℃.
The preparation method of the silicate modified polyurethane material comprises the following steps:
s1, respectively putting the A component main material and the B component main material into the A reaction kettle and the B reaction kettle according to the mixture ratio, and respectively storing the A component small material and the B component small material into charging containers on the A reaction kettle and the B reaction kettle;
s2, starting the stirring and circulating functions of the reaction kettle, slowly dripping the small materials of the component A into the reaction kettle A to mix the materials, and slowly dripping the small materials of the component B into the reaction kettle B to mix the materials after mixing the small materials of the component B in sequence;
s3, after the small materials of the component A and the small materials of the component B are dripped, the reaction kettle continues to work for 20-30 min, and the materials are fully and uniformly mixed to respectively obtain a mixture of the component A and a mixture of the component B for later use;
and S4, when the grouting slurry is used in a grouting site, mixing the component A mixture and the component B mixture to obtain mixed slurry, and injecting the mixed slurry into the crushed coal and the rock mass by using a grouting pump, and then quickly reacting and solidifying to form plugging for reinforcing the crushed coal, the rock mass and cracks thereof.
Preferably, the main materials of the component A are sodium silicate, glycerol and water, and the small materials of the component A added subsequently are dimethyl 2-ethanol; the main materials of the component B comprise isocyanate, polyether polyol and polyurethane, and the small materials of the component B are mixed according to the adding sequence of sodium stearate, plasticizer, composite vegetable fat and flame retardant to prepare a small material mixture of the component B.
The invention has the beneficial effects that:
1. through modification and optimization of polyurethane, the temperature generated by mixing the A, B two materials is controlled within 100 ℃, spontaneous combustion of coal is well prevented, and meanwhile, the heat emitted out cannot explode with dust in the air, so that potential safety hazards of workers are avoided.
2. The A, B two materials are fully mixed through the grouting pump, the materials can be quickly permeated and bonded when being stuck on the surface of the coal layer, the curing time is short, the efficiency is high, the material bonding property is strong, the coal rock body can be quickly bonded into a whole, the integral strength is improved, and the occurrence of accidents is prevented.
Detailed Description
The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.
The chemical reaction and action principle of the invention are as follows:
chemical reaction:
1. under the action of catalyst, isocyanate and water produce polyurea and carbon dioxide gas.
2. Sodium silicate reacts with carbon dioxide to form stable sodium carbonate and orthosilicic acid.
3. The isocyanate reacts with hydroxyl orthosilicate to form polyurethane.
The chemical reaction formula is as follows:
principle of action
After the component A and the component B of the polymer reinforced material are fully mixed according to the volume ratio of 1:1, a chemical reaction begins to occur, and mixed slurry with certain viscosity is generated. The mixed slurry is extruded and pushed into the coal-rock body cracks under the action of grouting pressure, a chemical reaction starts to occur within a certain time, a concretion with certain strength and toughness is generated, and the concretion plays a role of a network framework in the loose coal-rock body cracks, so that the loose coal-rock bodies are bonded into a whole, the overall strength and toughness of the coal-rock bodies are improved, and the effect of reinforcing the coal-rock bodies is achieved.
Example 1
Taking the following materials A in parts by weight according to a formula, taking the component A as a main material: 50% of sodium silicate, 10% of glycerol and 8% of water are placed into a reaction kettle A, 2% of dimethyl 2-ethanol of the component A small material is taken and placed into a feeding container on the reaction kettle A, the stirring and circulating functions of the reaction kettle A are started, the component A small material is slowly dripped into the component A main material in the reaction kettle A to mix the materials, and after the dripping of the small material is finished, the reaction kettle continues to work for 20-30 min to fully and uniformly mix the materials to obtain a component A mixture for later use.
Taking the following materials A in percentage by weight according to a formula: taking the main materials of the component B: putting 75% of isocyanate, 10% of polyether polyol and 5% of polyurethane into a B reaction kettle, taking B component small materials: sequentially adding 3% of plasticizer, 2% of composite vegetable fat, 3% of flame retardant and 2% of sodium stearate into a feeding container on a B reaction kettle in the sequence, uniformly mixing to obtain a B component small material mixture, starting the stirring and circulating functions of the B reaction kettle, slowly dripping the B component small material mixture into the B component main material in the B reaction kettle to mix the materials, and after the small material dripping is finished, continuing to work for 20-30 min to fully and uniformly mix the materials to obtain the B component mixture for later use.
Example 2
The above-prepared mixture of the a-component and the B-component was tested:
at normal temperature, the mixture of the component A and the mixture of the component B are taken in a disposable container according to the volume ratio of 1:1, mixed and stirred quickly to obtain mixed slurry of the silicate modified polyurethane material, the mixed slurry is fully reacted and solidified, the reaction temperature is continuously measured in the reaction process, the curing time is recorded, and the performance of the cured material is tested. The experiment was repeated 3 more times. The following test results were obtained:
1. the reaction curing time is 160-200S.
2. The highest reaction temperature is less than or equal to 100 ℃.
3. The compressive strength is more than or equal to 40 MPa;
the tensile strength is more than or equal to 5 MPa;
the shear strength is more than or equal to 15 MPa;
the bonding strength is more than or equal to 3.0.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (7)
1. A silicate modified polyurethane material is characterized in that: the material is a two-component grouting material, and comprises a component A and a component B in a volume ratio of 1:1, wherein the component A is a silicate mixture, and the component B is a combined additive;
when the material is used, the component A and the component B are mixed and injected into the crushed coal and the rock mass by an injection pump, and then the mixture reacts rapidly and solidifies to form plugs for reinforcing the crushed coal, the rock mass and cracks thereof.
2. The silicate-modified polyurethane material according to claim 1, wherein: the component A comprises 45-55% of sodium silicate, 5-15% of glycerol, 1-4% of dimethyl 2-ethanol and 30-50% of water in parts by weight.
3. The silicate-modified polyurethane material and the preparation method thereof according to claim 1, wherein the silicate-modified polyurethane material comprises the following components: the component B comprises, by weight, 70-80% of isocyanate, 5-15% of polyether polyol, 2-7% of polyurethane, 1-5% of plasticizer, 1-4% of composite vegetable fat, 1-5% of flame retardant and 1-4% of sodium stearate.
4. The silicate-modified polyurethane material according to claim 1, wherein: the reaction curing time after the material is grouted is 160-200 s.
5. The silicate-modified polyurethane material according to claim 1, wherein: the highest reaction temperature after the component A and the component B are mixed is less than or equal to 100 ℃.
6. The method for preparing a silicate-modified polyurethane material according to claims 1 to 5, wherein the method comprises the following steps: the method comprises the following steps:
s1, respectively putting the A-component main material and the B-component main material into the A reaction kettle and the B reaction kettle according to the mixture ratio, and respectively storing the A-component small material and the B-component small material into charging containers on the A reaction kettle and the B reaction kettle;
s2, starting the stirring and circulating functions of the reaction kettle, slowly and dropwise adding the component A small materials into the reaction kettle A to mix the materials, and slowly and dropwise adding the component B small materials into the reaction kettle B to mix the materials after sequentially mixing;
s3, after the small materials of the component A and the small materials of the component B are dripped, the reaction kettle continues to work for 20-30 min, and the materials are fully and uniformly mixed to respectively obtain a mixture of the component A and a mixture of the component B for later use;
and S4, when the grouting agent is used in a grouting site, mixing the component A mixture and the component B mixture to obtain mixed slurry, and injecting the mixed slurry into the crushed coal and the rock mass by using a grouting pump, and then quickly reacting and solidifying to form plugging for reinforcing the crushed coal, the rock mass and the cracks thereof.
7. The method for preparing the silicate modified polyurethane material according to claim 6, wherein the method comprises the following steps: the main materials of the component A comprise sodium silicate, glycerol and water, and the small materials of the component A added subsequently comprise dimethyl 2-ethanol; the main materials of the component B comprise isocyanate, polyether polyol and polyurethane, and the small materials of the component B are mixed according to the adding sequence of sodium stearate, plasticizer, composite vegetable fat and flame retardant to prepare a small material mixture of the component B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210635449.XA CN114921235A (en) | 2022-06-06 | 2022-06-06 | Silicate modified polyurethane material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210635449.XA CN114921235A (en) | 2022-06-06 | 2022-06-06 | Silicate modified polyurethane material and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114921235A true CN114921235A (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210635449.XA Pending CN114921235A (en) | 2022-06-06 | 2022-06-06 | Silicate modified polyurethane material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115558079A (en) * | 2022-10-17 | 2023-01-03 | 山西浩博瑞新材料有限公司 | Material for coal mine reinforcing coal rock mass and preparation device |
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| CN102643531A (en) * | 2012-04-25 | 2012-08-22 | 辽宁工程技术大学 | Self-temperature-limited polyurethane grouting material and preparation method thereof |
| CN102964565A (en) * | 2012-12-03 | 2013-03-13 | 山东东大一诺威新材料有限公司 | Silicate modified polyurethane high molecular material and preparation method thereof |
| CN104558514A (en) * | 2014-12-26 | 2015-04-29 | 北京瑞诺安科新能源技术有限公司 | High-strength polyurethane modified silicate grouting reinforcement material as well as preparation method and application thereof |
| CN111690250A (en) * | 2020-06-04 | 2020-09-22 | 山东金鼎新能源材料有限公司 | Low-viscosity silicate reinforcing material and preparation method and application thereof |
| CN114213616A (en) * | 2021-12-20 | 2022-03-22 | 太原理工大学 | Low-temperature mine coal rock mass reinforcing grouting material, preparation method and application thereof |
-
2022
- 2022-06-06 CN CN202210635449.XA patent/CN114921235A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102643531A (en) * | 2012-04-25 | 2012-08-22 | 辽宁工程技术大学 | Self-temperature-limited polyurethane grouting material and preparation method thereof |
| CN102964565A (en) * | 2012-12-03 | 2013-03-13 | 山东东大一诺威新材料有限公司 | Silicate modified polyurethane high molecular material and preparation method thereof |
| CN104558514A (en) * | 2014-12-26 | 2015-04-29 | 北京瑞诺安科新能源技术有限公司 | High-strength polyurethane modified silicate grouting reinforcement material as well as preparation method and application thereof |
| CN111690250A (en) * | 2020-06-04 | 2020-09-22 | 山东金鼎新能源材料有限公司 | Low-viscosity silicate reinforcing material and preparation method and application thereof |
| CN114213616A (en) * | 2021-12-20 | 2022-03-22 | 太原理工大学 | Low-temperature mine coal rock mass reinforcing grouting material, preparation method and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115558079A (en) * | 2022-10-17 | 2023-01-03 | 山西浩博瑞新材料有限公司 | Material for coal mine reinforcing coal rock mass and preparation device |
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Application publication date: 20220819 |