CN114213885A - Safe quick-setting roadway sealing coating and preparation method thereof - Google Patents
Safe quick-setting roadway sealing coating and preparation method thereof Download PDFInfo
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- CN114213885A CN114213885A CN202111609357.6A CN202111609357A CN114213885A CN 114213885 A CN114213885 A CN 114213885A CN 202111609357 A CN202111609357 A CN 202111609357A CN 114213885 A CN114213885 A CN 114213885A
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- 238000000576 coating method Methods 0.000 title claims abstract description 30
- 239000011248 coating agent Substances 0.000 title claims abstract description 28
- 238000007789 sealing Methods 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 25
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 23
- 239000003054 catalyst Substances 0.000 claims abstract description 13
- 239000012948 isocyanate Substances 0.000 claims abstract description 13
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 13
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 11
- 229920000570 polyether Polymers 0.000 claims abstract description 11
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 9
- 150000002148 esters Chemical class 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 8
- 239000004970 Chain extender Substances 0.000 claims abstract description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 27
- 238000003756 stirring Methods 0.000 claims description 18
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 12
- RZRNAYUHWVFMIP-KTKRTIGZSA-N 1-oleoylglycerol Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(O)CO RZRNAYUHWVFMIP-KTKRTIGZSA-N 0.000 claims description 6
- OXYZDRAJMHGSMW-UHFFFAOYSA-N 3-chloropropyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)CCCCl OXYZDRAJMHGSMW-UHFFFAOYSA-N 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 6
- -1 urethane modified MDI Chemical class 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 4
- PISLZQACAJMAIO-UHFFFAOYSA-N 2,4-diethyl-6-methylbenzene-1,3-diamine Chemical compound CCC1=CC(C)=C(N)C(CC)=C1N PISLZQACAJMAIO-UHFFFAOYSA-N 0.000 claims description 4
- MGFQUYGIHQXMSC-UHFFFAOYSA-N 2-ethoxybutan-2-ol Chemical compound CCOC(C)(O)CC MGFQUYGIHQXMSC-UHFFFAOYSA-N 0.000 claims description 4
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- PHYFQTYBJUILEZ-UHFFFAOYSA-N Trioleoylglycerol Natural products CCCCCCCCC=CCCCCCCCC(=O)OCC(OC(=O)CCCCCCCC=CCCCCCCCC)COC(=O)CCCCCCCC=CCCCCCCCC PHYFQTYBJUILEZ-UHFFFAOYSA-N 0.000 claims description 4
- HBGGXOJOCNVPFY-UHFFFAOYSA-N diisononyl phthalate Chemical compound CC(C)CCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCC(C)C HBGGXOJOCNVPFY-UHFFFAOYSA-N 0.000 claims description 4
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- 229920001228 polyisocyanate Polymers 0.000 claims description 3
- 239000005056 polyisocyanate Substances 0.000 claims description 3
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 3
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 2
- BXQLKGJCLJZZOP-UHFFFAOYSA-N methylsulfanylmethane;toluene Chemical compound CSC.CC1=CC=CC=C1 BXQLKGJCLJZZOP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 2
- 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 abstract description 4
- 239000003063 flame retardant Substances 0.000 abstract description 4
- 239000012074 organic phase Substances 0.000 abstract description 4
- 239000012071 phase Substances 0.000 abstract description 4
- 238000005507 spraying Methods 0.000 description 17
- 229920002635 polyurethane Polymers 0.000 description 16
- 239000004814 polyurethane Substances 0.000 description 15
- 239000000463 material Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 9
- 239000007788 liquid Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000003245 coal Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 230000002269 spontaneous effect Effects 0.000 description 4
- 239000011527 polyurethane coating Substances 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 2
- 239000004148 curcumin Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- MTEZSDOQASFMDI-UHFFFAOYSA-N 1-trimethoxysilylpropan-1-ol Chemical compound CCC(O)[Si](OC)(OC)OC MTEZSDOQASFMDI-UHFFFAOYSA-N 0.000 description 1
- VOZKAJLKRJDJLL-UHFFFAOYSA-N 2,4-diaminotoluene Chemical compound CC1=CC=C(N)C=C1N VOZKAJLKRJDJLL-UHFFFAOYSA-N 0.000 description 1
- AOFIWCXMXPVSAZ-UHFFFAOYSA-N 4-methyl-2,6-bis(methylsulfanyl)benzene-1,3-diamine Chemical compound CSC1=CC(C)=C(N)C(SC)=C1N AOFIWCXMXPVSAZ-UHFFFAOYSA-N 0.000 description 1
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates
- C09D1/04—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates with organic additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention provides a safe quick-setting roadway sealing coating and a preparation method thereof, the coating solves the problem of compatibility of inorganic phases and organic phases, and has the advantages of quick setting, good flame-retardant antistatic performance, excellent sealing performance and excellent storage stability of products. It is a mixture of 1:1, wherein the component A consists of the following substances in percentage by mass: water glass 150-; 5-25 parts of silane coupling agent; 2-15 parts of a chain extender; 10-50 parts of amino-terminated polyether; 0.1-1.5 of catalyst; the component B comprises the following substances in percentage by mass: 75-95 parts of isocyanate; 30-45 parts of urethane modified MDI prepolymer; 10-45 parts of ester viscosity reducer.
Description
Technical Field
The invention relates to preparation of a quick-setting low-heat organic-inorganic composite spraying material, in particular to a liquid water glass modified polyurethane spraying material, and belongs to the field of inorganic modified polyurethane grouting.
Background
1. Gas extraction and ventilation management are the main methods for treating gas and coal spontaneous combustion disasters in domestic coal mines at present, but the prevention and control work of corresponding disasters cannot be completely solved by a single means. The tunnel sealing technology is another effective way for treating the gas and coal spontaneous combustion disasters. An effective sealing layer is established on the surface of the roadway by using a coating sealing technology, so that a fracture field can be blocked, and gas leakage and coal spontaneous combustion disasters can be avoided in the corresponding roadway or working face. The method has great significance for the engineering that a large part of underground coal mines can not carry out gas and coal spontaneous combustion treatment by gas extraction, ventilation management and other existing means.
2. Common spraying materials are mainly divided into inorganic single-component spraying materials and organic double-component spraying materials, the inorganic single-component spraying gel is slow, cannot be hung thickly, has large pores, and is difficult to seal gas and water penetrating into the surrounding rock of the roadway; at present, organic bi-component spray paint is mainly polyurethane, although the performance is excellent and the sealing performance is strong, the organic bi-component spray paint is easy to foam when meeting water, and the problems of large smell, poor flame retardant and antistatic performance, high reaction heat and the like exist during spraying.
3. The water glass material has low cost, excellent antistatic and flame retardant properties, but poor mechanical properties; at present, a plurality of water glass coatings are available on the market, so the water glass modified polyurethane coating is a direction for solving the problem of using inorganic and organic spray coatings independently. However, as the isocyanate is an oily substance and the water glass is an aqueous substance, the problems of poor compatibility of the two components and the like exist when the water glass is used, so that the actual value and the ideal value of the mechanical property of the spraying material have large deviation, and particularly the bonding property with a roadway is low, thereby radically influencing the closure of the roadway.
Disclosure of Invention
The invention aims to provide a safe quick-setting roadway sealing coating which is a high-compatibility water glass modified polyurethane coating prepared by taking water glass as a main inorganic liquid component, solves the problem of compatibility between an inorganic phase and an organic phase, comprehensively exerts the advantages of inorganic phase and organic phase, is quick-setting, good in flame-retardant antistatic property, excellent in sealing property and excellent in product storage stability, and is mainly used for plugging gas and water in a roadway sealing mode.
The invention relates to a safe quick-setting roadway sealing coating, which is prepared from the following components in a volume ratio of 1:1 of a mixture of a component A and a component B,
the component A consists of the following substances in percentage by mass:
the component B comprises the following substances in percentage by mass:
75-95 parts of isocyanate;
30-45 parts of urethane modified MDI prepolymer;
10-45 parts of ester viscosity reducer.
In the safe quick-setting roadway sealing coating, the water glass is an aqueous solution of sodium silicate with the modulus of 2.0-3.5, and the Baume degree is 35-50.
The silane coupling agent is one or more of aminopropyltrimethoxysilane, aminopropyltriethoxysilane, gamma-glycidoxypropyltrimethoxysilane and 3-chloropropyltrimethoxysilane.
In the safe quick-setting roadway sealing coating, the chain extender is one or more of diethyltoluenediamine, dimethylthiotoluenediamine, Wandalink6200 and glycerol.
The safe quick-setting roadway sealing coating is characterized in that the amino-terminated polyether is one or more of amino-terminated polyether T-3000, T-5000, D-2000 and D-4000.
The catalyst is one or more of triethylene diamine, dimethyl ethoxy ethanol and a Cucat-WNK01 composite catalyst. The Cucat-WNK01 composite catalyst is produced by Guangzhou Yougun new synthetic material Co.
The safe quick-setting roadway sealing coating is prepared from polyphenyl polymethylene polyisocyanate which is produced by Nicoti Wanhua polyurethane GmbH.
The polyurethane modified MDI prepolymer is an XCPC series polyurethane modified MDI prepolymer produced by Asahi Chuan chemistry Limited company. The polyurethane modified MDI prepolymer is prepared by pre-polymerizing low molecular weight polyether or micromolecular polyalcohol and isocyanate, and the final viscosity of the prepolymer is less than or equal to 10000 mPa.s at normal temperature, and the-NCO% value is between 14 and 20%.
In the safe rapid-setting roadway sealing coating, the ester viscosity reducer is one or more of saponified glycerol, glyceryl oleate, lauryl alcohol phosphate and diisononyl phthalate.
The invention also provides a preparation method of the safe quick-setting roadway sealing coating, which comprises the steps of stirring water glass and a silane coupling agent in vacuum at 30-40 ℃, then adding the chain extender, the amine-terminated polyether and the catalyst in batches, stirring, and uniformly stirring to obtain a component A;
mixing and stirring isocyanate, a urethane modified MDI prepolymer and an ester viscosity reducer at 30-40 ℃ to obtain a component B;
mixing the component A and the component B.
Compared with the coating material used for the current roadway, the invention has the following advantages:
1. the inorganic component is prepared from water glass, and the micromolecule auxiliary agent is added to increase the compatibility of the inorganic component and the organic component, so that the inorganic component has excellent mechanical property.
2. The urethane modified MDI prepolymer is selected, has stronger compatibility with system isocyanate, has lower highest reaction temperature on the premise of ensuring the mechanical property to reach the standard, and further ensures the cohesiveness and the safety.
3. Compared with the polyurethane coating material, the coating has higher safety and lower cost; compared with inorganic coatings, the coating has more excellent bonding, sealing and operability.
Detailed Description
A safe quick-setting roadway sealing coating is composed of a component A and a component B.
The material components are as follows:
the component A comprises the following components in percentage by mass:
the component B comprises the following components in percentage by mass:
75-95 parts of isocyanate;
30-45 parts of urethane modified MDI prepolymer;
10-45 parts of ester viscosity reducer.
The liquid water glass is selected from transparent liquid water glass, the modulus of the liquid water glass is 2.0-3.5, and the baume degree of the liquid water glass is 35-50.
The silane coupling agent is selected from one or more of aminopropyltrimethoxysilane, aminopropyltriethoxysilane, gamma-glycidoxypropyltrimethoxysilane, 3-chloropropyltrimethoxysilane and the like.
The chain extender is selected from one or more of diethyl toluene diamine, dimethyl sulfur toluene diamine, Wandalink6200, glycerol and the like. Wandalink6200 was purchased from watlain polyurethane, inc.
The amino-terminated polyether is selected from one or more of amino-terminated polyether T-3000, T-5000, D-2000 and D-4000.
The catalyst is selected from one or more of solid triethylene diamine, dimethyl ethoxy ethanol, triethylene diamine solution A33 (33% triethylene diamine, the solution is dipropylene glycol) and a Cucat-WNK01 composite special catalyst, wherein the Cucat-WNK01 is from Guangzhou Youlun new material synthesis company Limited.
The isocyanate is selected from one or more of polyphenyl polymethylene polyisocyanates, available from cigarette platform Vanhua polyurethane, Inc.
The polyurethane modified prepolymer is prepared by pre-polymerizing low molecular weight polyether or micromolecular polyalcohol with isocyanate under a specific process, the viscosity of the final prepolymer is less than or equal to 10000mPa & s at normal temperature, and the-NCO% value is between 14 and 20%, and the polyurethane modified prepolymer is selected from XCPC series of Asahi Chuan chemistry Limited.
The ester viscosity reducer is one or more selected from saponified glycerol, glyceryl oleate, lauryl alcohol phosphate, diisononyl phthalate, etc.
The first embodiment is as follows:
1. at the temperature of 30-40 ℃, firstly, vacuumizing and stirring 180 parts of water glass (modulus is 2.5, Baume degree is 50) and 10 parts of 3-chloropropyltrimethoxysilane for a period of time, then adding 5 parts of diethyltoluenediamine (E100), 30 parts of D-4000 and 0.5 part of liquid triethylenediamine in batches, stirring for a period of time, and uniformly stirring to obtain a component A;
2. mixing 85 parts of isocyanate PM200 (purchased from Tantai Wanhua polyurethane Co., Ltd.), 45 parts of polyurethane modified MDI prepolymer, 15 parts of glycerol oleate and 10 parts of saponified glycerol at 30-40 ℃ for a period of time to obtain a component B; mixing the A and B double components according to the volume ratio of 1:1, spraying the mixture on the surface of a roadway by a spraying machine, and testing the performance. The performance was tested as follows:
surface maximum reaction temperature: 90 ℃;
initial setting time: 1 min;
final setting time: 1.5 min;
compressive strength: 20 MPa;
tensile strength: 10 Mpa;
bonding strength: 4 MPa;
surface resistance: 10^6 omega;
oxygen index: 32.
the storage time of the component A and the component B is as follows: 6 months.
Example two:
1. at the temperature of 30-40 ℃, firstly, 150 parts of water glass (modulus is 2.5, Baume degree is 50) and 15 parts of gamma-glycidyl ether oxypropyl trimethoxy silane are vacuumized and stirred (rotating speed is 40rpm/min) for a period of time, then 5 parts of glycerol, 20 parts of D-4000, 0.5 part of dimethylethoxy ethanol and 1 part of A33 catalyst are added in batches and stirred for a period of time, and the component A is obtained after uniform stirring;
2. mixing and stirring 95 parts of PM200, 25 parts of polyurethane modified MDI prepolymer and 25 parts of diisononyl phthalate for a period of time at the temperature of 30-40 ℃ to obtain a component B; mixing the A and B double components according to the volume ratio of 1:1, spraying the mixture on the surface of a roadway by a spraying machine, and testing the performance. The performance was tested as follows:
surface maximum reaction temperature: 85 ℃;
initial setting time: 2 min;
final setting time: 2.5 min;
compressive strength: 15 MPa;
tensile strength: 8 Mpa;
bonding strength: 3 MPa;
surface resistance: 10^6 omega;
oxygen index: 34.
the storage time of the component A and the component B is as follows: 6 months.
Example three:
1. at the temperature of 30-40 ℃, firstly, 180 parts of water glass (modulus 2.4, Baume degree 50) and 15 parts of 3-chloropropyltrimethoxysilane are vacuumized and stirred (rotating speed 40rpm/min) for a period of time, then 5 parts of E100, 20 parts of D-4000 and 1.5 parts of Cucat-WNK01 composite special catalyst are added in batches and stirred for a period of time, and the component A is obtained after uniform stirring;
2. mixing and stirring 85 parts of PM200, 45 parts of polyurethane modified MDI prepolymer and 25 parts of glycerol oleate for a period of time at the temperature of 30-40 ℃ to obtain a component B; mixing the A and B double components according to the volume ratio of 1:1, spraying the mixture on the surface of a roadway by a spraying machine, and testing the performance. The performance was tested as follows:
surface maximum reaction temperature: 85 ℃;
initial setting time: 45 s;
final setting time: 1 min;
compressive strength: 20 MPa;
tensile strength: 12 Mpa;
bonding strength: 4.5 MPa;
surface resistance: 10^6 omega;
oxygen index: 34;
the storage time of the component A and the component B is as follows: 6 months.
Example four:
1. at the temperature of 30-40 ℃, firstly, vacuumizing and stirring 180 parts of water glass (modulus is 2.4, baume degree is 50) with 5 parts of aminopropyltrimethoxysilane and 10 parts of aminopropyltriethoxysilane (rotating speed is 40rpm/min) for a period of time, then adding 3 parts of dimethyl-sulfur-based toluenediamine, 2 parts of Wandalink6200, 2 parts of D-2000, 10 parts of T-3000, 10 parts of T-5000 and 1.5 parts of solid triethylene diamine in batches, stirring for a period of time, and uniformly stirring to obtain a component A;
2. mixing and stirring 85 parts of PM200, 45 parts of polyurethane modified MDI prepolymer, 15 parts of glyceryl oleate and 10 parts of lauryl alcohol phosphate at the temperature of 30-40 ℃ for a period of time to obtain a component B; mixing the A and B double components according to the volume ratio of 1:1, spraying the mixture on the surface of a roadway by a spraying machine, and testing the performance. The performance was tested as follows:
surface maximum reaction temperature: 85 ℃;
initial setting time: 43 s;
final setting time: 55 s;
compressive strength: 15 MPa;
tensile strength: 8 Mpa;
bonding strength: 3 MPa;
surface resistance: 10^6 omega;
oxygen index: 34.
the storage time of the component A and the component B is as follows: 6 months.
The three examples have the best overall performance by comparison with 4 examples. From the example analysis it can be seen that: the type and the dosage of the water glass have great influence on the final mechanical property, and meanwhile, the addition of the small molecular auxiliary agent 3-chloropropyltrimethoxysilane and the glycerol improves the compatibility of inorganic phases and organic phases, and on one hand, the inorganic and organic catalytic process is improved by introducing the special inorganic and organic Cucat-WNK01 catalyst; on the other hand, prepolymer is introduced to improve the final mechanical property, so that a high-performance roadway coating is formed, the roadway surrounding rock can be effectively sealed, and the gas and water plugging effects are achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The safe quick-setting tunnel sealing coating is characterized by comprising the following components in parts by weight: it is a mixture of 1:1 of a mixture of a component A and a component B,
the component A consists of the following substances in percentage by mass:
the component B comprises the following substances in percentage by mass:
75-95 parts of isocyanate;
30-45 parts of urethane modified MDI prepolymer;
10-45 parts of ester viscosity reducer.
2. The safety type fast-setting roadway closure coating as claimed in claim 1, wherein: the water glass is a water solution of sodium silicate with the modulus of 2.0-3.5, and the Baume degree is 35-50.
3. The safety type fast-setting roadway closure coating as claimed in claim 1, wherein: the silane coupling agent is one or more of aminopropyltrimethoxysilane, aminopropyltriethoxysilane, gamma-glycidoxypropyltrimethoxysilane and 3-chloropropyltrimethoxysilane.
4. The safety type fast-setting roadway closure coating as claimed in claim 1, wherein: the chain extender is one or more of diethyl toluene diamine, dimethyl sulfur toluene diamine, Wandalink6200 and glycerol.
5. The safety type fast-setting roadway closure coating as claimed in claim 1, wherein: the amino-terminated polyether is one or more of amino-terminated polyether T-3000, T-5000, D-2000 and D-4000.
6. The safety type fast-setting roadway closure coating as claimed in claim 1, wherein: the catalyst is one or more of triethylene diamine, dimethylethoxy ethanol and a Cucat-WNK01 composite catalyst.
7. The safety type fast-setting roadway closure coating as claimed in claim 1, wherein: the isocyanate is polyphenyl polymethylene polyisocyanate.
8. The safety type fast-setting roadway closure coating as claimed in claim 1, wherein: the urethane-modified MDI prepolymer is an XCPC-series urethane-modified MDI prepolymer produced by Asahi Chuan chemical Co., Ltd.
9. The safety type fast-setting roadway closure coating as claimed in claim 1, wherein: the ester viscosity reducer is one or more of saponified glycerol, glyceryl oleate, lauryl alcohol phosphate and diisononyl phthalate.
10. The preparation method of the safe quick-setting roadway sealing coating as claimed in claim 1, which is characterized by comprising the following steps: stirring water glass and a silane coupling agent in vacuum at 30-40 ℃, then adding a chain extender, amino-terminated polyether and a catalyst in batches, stirring uniformly to obtain a component A;
mixing and stirring isocyanate, a urethane modified MDI prepolymer and an ester viscosity reducer at 30-40 ℃ to obtain a component B;
mixing the component A and the component B.
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| CN202111609357.6A CN114213885A (en) | 2021-12-27 | 2021-12-27 | Safe quick-setting roadway sealing coating and preparation method thereof |
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| CN202111609357.6A CN114213885A (en) | 2021-12-27 | 2021-12-27 | Safe quick-setting roadway sealing coating and preparation method thereof |
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| CN116042076A (en) * | 2023-01-18 | 2023-05-02 | 南京科工煤炭科学技术研究有限公司 | Low-thermal-resistance quick-setting roadway spraying foaming sealing material and preparation method thereof |
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Application publication date: 20220322 |