CN104650664A - Gas plugging coating for wall surface of mine laneway - Google Patents

Gas plugging coating for wall surface of mine laneway Download PDF

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Publication number
CN104650664A
CN104650664A CN201510078403.2A CN201510078403A CN104650664A CN 104650664 A CN104650664 A CN 104650664A CN 201510078403 A CN201510078403 A CN 201510078403A CN 104650664 A CN104650664 A CN 104650664A
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Prior art keywords
mine laneway
cement
powder
gas plugging
gas
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CN201510078403.2A
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CN104650664B (en
Inventor
薛芳斌
杨凤玲
宋慧平
程芳琴
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SHANXI RUIENZE TECHNOLOGY Co Ltd
Shanxi University
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SHANXI RUIENZE TECHNOLOGY Co Ltd
Shanxi University
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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
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • 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
    • C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
    • C09D125/02—Homopolymers or copolymers of hydrocarbons
    • C09D125/04—Homopolymers or copolymers of styrene
    • C09D125/08—Copolymers of styrene
    • C09D125/14—Copolymers of styrene with unsaturated esters
    • 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
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/14—Gas barrier composition

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  • 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)
  • Paints Or Removers (AREA)
  • Building Environments (AREA)

Abstract

The invention relates to the technical field of coal mine safety, and particularly relates to a gas plugging coating for the wall surface of a mine laneway. The gas plugging coating is capable of reducing the concentration of gas inside the mine laneway, enabling the gas to uniformly effuse and reducing the cost. The gas plugging coating for the wall surface of the mine laneway comprises a liquid material and a powder material according to the mass percent of (40-55):100, wherein the liquid material is an elastic polymerized emulsion, the elastic polymerized emulsion is an anionic acrylate emulsion or a styrene-acrylate emulsion; the powder material comprises the following components in percentage by weight: 50%-80% of micropowder coal ash, 0%-30% of cement, 3%-5% of graphite, 0%-2% of carbon black, 7%-12% of chlorinated paraffin and 3%-8% of aluminum hydroxide; and the particle diameter of the micropowder coal ash is 1-10 micrometers, and the cement is 325# portland slag cement or higher-grade cement. The gas plugging coating disclosed by the invention is mainly applied to the aspect of coal mines.

Description

A kind of mine laneway wall gas plugging coating
Technical field
The present invention relates to a kind of technical field of mine safety, particularly relate to a kind of mine laneway wall gas plugging coating.
Background technology
China is a big coal country, and gas is the high-quality clear energy sources of the common association with coal, is also the major safety risks of underground coal mine exploitation driving face.In order to ensure Gas and operating surface safety in underground coal mine exploitation tunneling process mine laneway, current coal mining enterprise is basic equipment Measuring System of Gas and ventilation system, because coal mine laneway wall Gas concentration is extremely uneven, the data that existing gas detecting device detects are not accurate enough, for ensuring safety in production, ventilation system is round-the-clock running at full capacity almost.According to statistics, blower fan current consumption accounts for 15% to 20% of full mine total power consumption, and some collieries even reach more than 30%.Therefore accurately grasping size and the rule of gas flowing in coal layer, is the important evidence of rationally carrying out Design of Mine Ventilation and Comprehensive Gas Control.
Patent CN101781497A discloses a kind of underground gas plugging coating in coal mine, be sprayed on rib and can prevent gas seepage, the powder of this coating is mainly cement, silica powder, talcum powder, flyash etc., and wherein flyash (drift pearl) addition is only 5 ~ 10%.Be published in " flyash is to the research of underground coal mine mine laneway spray material performance impact " on " total utilization of PCA " and adopt the decarburization flyash in " flyash Floatation of Removal Carbon experimental study " to replace the quartz powder filler of about 40% to prepare underground coal mine spray material, functional.But flyash adopts flotation process decarburization, needs to add expensive emulsifying agent, collecting agent and pore forming material, flotation productive rate is 30 ~ 35%, and the decarburization flyash that flotation obtains also needs to dry and could use, and operation is various; Decarburization flyash remained on surface in addition after flotation has the tensio-active agent such as collecting agent and pore forming material, and fly ash grain is easily reunited and sedimentation in coating, and coating dispersiveness is deteriorated.Therefore, be necessary to improve prior art.
Summary of the invention
In order to overcome in prior art existing deficiency, provide a kind of and reduce gas density in mine laneway, make Gas evenly, a kind of gas plugging coating of reducing costs.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A kind of mine laneway wall gas plugging coating is 40 ~ 55: 100 compositions by the mass percent of liquid material and powder.
Described liquid material is flexible polymer emulsion.
Described flexible polymer emulsion is anionic acrylic ester emulsion or styrene-acrylate emulsion.
Described powder forms according to following weight percent: superfined flyash 50 ~ 80, cement 0 ~ 30, graphite 3 ~ 5, carbon black 0 ~ 2, clorafin 7 ~ 12, aluminium hydroxide 3 ~ 8.
The gross weight of described superfined flyash and cement accounts for 80% of powder; Described graphite and carbon black are conductive filler material, and gross weight accounts for 5% of powder; Described clorafin and aluminium hydroxide are fire retardant, and gross weight accounts for 15% of powder.
The particle diameter of described superfined flyash is 1 ~ 10 μm.
Described cement is 325# Portland blast furnace slag cement or more cement of high index.
Described coating forms according to following mass percent when using: water 25 ~ 40, liquid material 40 ~ 55, powder 100.
The beneficial effect that the present invention is compared with prior art had is:
Adopt the crack on sealing agent spraying rib blocking rib top layer, slow down and stablize rib Gas, can provide and stablize believable gas management condition; Sealing agent coating structure is fine and close, there is good resistance to air loss, and cohesiveness, water-repellancy, stretch-resistance, static resistance, flame retardant resistance etc. all meet relevant criterion, and change sealing agent and use coal-based solid waste flyash to be main powder stuffing, therefore cost is lower than like product on the market; Sealing agent spraying mine laneway rib slows down Gas with sluggishness, both the quantity discharged of gas to mine laneway and air had been reduced, decrease the working load of exhaust system, colliery can also be made to tunnel Gas speed tending to be steady everywhere in mine laneway, create a large even measurement environment.
Accompanying drawing explanation
Below by accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is the electron-microscope scanning figure of embodiment 1 test specimen in the present invention;
Fig. 2 is the electron-microscope scanning figure of the full cement of embodiment 1 in the present invention.
Embodiment
The present invention is described in further detail by reference to the accompanying drawings for embodiment below.
Embodiment 1
Be the superfined flyash 60kg of 2.18 μm by particle diameter, label be 325 Portland blast furnace slag cement 20kg, clorafin 10kg, aluminium hydroxide 5kg, graphite 3kg, carbon black 2kg mixing be powder; Get flexible emulsion S400F 50kg at the construction field (site) and pour grouting pump stirred pot into, then add 30kg water, stirring at low speed evenly after, then add above-mentioned powder, continue to stir and can carry out mine laneway wall spraying and execute 1 work.
Detected result:
1) apparent property
Coating surface drying time 10min, does solid work time 7h, does solid work the smooth leakless of rear coating;
2) mechanical property
Non-processor tensile strength 3.1MPa, 30min is waterproof for elongation at break 83%, 0.3MPa, meets specified standards in GB/T23445-2009 " polymer cement waterproof paint ";
3) coal peace test
Flame retardant resistance is tested: spirit lamp flaming combustion 2.1s, flameless combustion 8s, flame spread length 105-129mm; Alcohol blast burner flaming combustion 1.1s, flameless combustion 4.2s, flame spread length 162-198mm;
Antistatic test: test specimen upper surface resistance 1.14 × 10 4Ω, lower surface resistance 5.83 × 10 3Ω;
Flame retardant resistance and static resistance all meet the requirement of regulation in coal industry standard MT-113-1995 " underground mine use polymer product fire retardant, antistatic General Experimental Procedures and decision rule ";
4) air-tightness
According to GB/T7755-2003 " mensuration of vulcanized rubber or thermoplastic elastomer ventilation property " method, carried out pressure differential method gas permeation to test specimen and measured examination, oxygen transit dose is 76.445cm 3/ m 224h0.1MPa, permeability coefficient is 3.841 × 10 -10cm 3cm/m 2scmHg.Made simultaneous test with the test specimen of full cement (not admixture superfined flyash), oxygen transit dose is 212.309cm simultaneously 3/ m 224h0.1MPa, permeability coefficient is 10.67 × 10 -10cm 3cm/m 2scmHg.Can find out, the gas permeability of the present embodiment test specimen is only 1/3rd of full cement specimen.In addition, contrast with the permeability coefficient of the mould material mentioned in document, the present embodiment test specimen and plastics film (3.15 × 10 -10cm 3cm/m 2scmHg), polyethylene (3.0 × 10 -10cm 3cm/m 2scmHg), PE film (3.222 × 10 -10cm 3cm/m 2scmHg) resistance to air loss is suitable.
And then electron-microscope scanning analysis has been done respectively to the present embodiment test specimen and full cement specimen, as depicted in figs. 1 and 2, compare and can find out, the present embodiment test specimen pattern uniform texture is fine and close, only have a small amount of tiny micropore to grow, and after full cement specimen partial enlargement, hole cavity structure is larger, what superfined flyash was described adds the grade grating optimizing feed particles, improve the consistency of powder particles and emulsion, effectively prevent the formation of crack and hole, conscientiously improve the resistance to air loss of material.
Embodiment 2
Be the superfined flyash 70kg of 3.76 μm by particle diameter, label be 325 Portland blast furnace slag cement 10kg, clorafin 12kg, aluminium hydroxide 3kg, graphite 5kg mixing be powder; Get flexible emulsion S400F 50kg at the construction field (site) and pour grouting pump stirred pot into, then add 32kg water, after stirring at low speed is even, then add above-mentioned powder, continue to stir and can carry out the construction of mine laneway wall spraying.
Detected result:
1) apparent property
Coating surface drying time 12min, does solid work time 7h, does solid work rear coating leakless;
2) mechanical property
Non-processor tensile strength 3.5MPa, 30min is waterproof for elongation at break 80%, 0.3MPa, meets specified standards in GB/T23445-2009 " polymer cement waterproof paint ";
3) coal peace test
Flame retardant resistance is tested: spirit lamp flaming combustion 2.2s, flameless combustion 11.4s, flame spread length 80-89mm; Alcohol blast burner flaming combustion 1.1s, flameless combustion 8.2s, flame spread length 95-109mm;
Antistatic test: test specimen lower surface resistance 1.1 × 10 3Ω, upper surface resistance 3.8 × 10 4Ω;
Flame retardant resistance and static resistance all meet the requirement of regulation in coal industry standard MT-113-1995 " underground mine use polymer product fire retardant, antistatic General Experimental Procedures and decision rule ";
4) air-tightness
According to GB/T7755-2003 " mensuration of vulcanized rubber or thermoplastic elastomer ventilation property " method, carried out pressure differential method gas permeation to test specimen and measured examination, oxygen transit dose is 77.862cm 3/ m 224h0.1MPa, permeability coefficient is 3.912 × 10 -10cm 3cm/m 2scmHg.
Embodiment 3
Be the superfined flyash 75kg of 2.18 μm by particle diameter, label be 325 Portland blast furnace slag cement 5kg, clorafin 7kg, aluminium hydroxide 8kg, graphite 3kg, carbon black 2kg mixing be powder; Get flexible emulsion S400F 50kg at the construction field (site) and pour grouting pump stirred pot into, then add 38kg water, after stirring at low speed is even, then add above-mentioned powder, continue to stir and can carry out the construction of mine laneway wall spraying.
Detected result:
1) apparent property
Coating surface drying time 13min, does solid work time 7.5h, does solid work rear coating leakless;
2) mechanical property
Show tensile strength 3.4MPa nowhere, 30min is waterproof for elongation at break 70%, 0.3MPa, meets specified standards in GB/T23445-2009 " polymer cement waterproof paint ";
3) coal peace test
Flame retardant resistance is tested: spirit lamp flaming combustion 1.2s, flameless combustion 8.7s, flame spread length 102-129mm; Alcohol blast burner flaming combustion 1.2s, flameless combustion 4.1s, flame spread length 143-178mm;
Antistatic test: test specimen upper surface resistance 1.82 × 10 6Ω, lower surface resistance 2.45 × 10 5Ω;
Flame retardant resistance and static resistance all meet the requirement of regulation in coal industry standard MT-113-1995 " underground mine use polymer product fire retardant, antistatic General Experimental Procedures and decision rule ";
4) air-tightness
According to GB/T7755-2003 " mensuration of vulcanized rubber or thermoplastic elastomer ventilation property " method, carried out pressure differential method gas permeation to test specimen and measured examination, oxygen transit dose is 82.472cm 3/ m 224h0.1MPa, permeability coefficient is 4.144 × 10 -10cm 3cm/m 2scmHg.

Claims (8)

1. a mine laneway wall gas plugging coating, is characterized in that: be 40 ~ 55: 100 compositions by the mass percent of liquid material and powder.
2. a kind of mine laneway wall gas plugging coating according to claim 1, is characterized in that: described liquid material is flexible polymer emulsion.
3. a kind of mine laneway wall gas plugging coating according to claim 2, is characterized in that: described flexible polymer emulsion is anionic acrylic ester emulsion or styrene-acrylate emulsion.
4. a kind of mine laneway wall gas plugging coating according to claim 1, it is characterized in that, described powder forms according to following weight percent: superfined flyash 50 ~ 80, cement 0 ~ 30, graphite 3 ~ 5, carbon black 0 ~ 2, clorafin 7 ~ 12, aluminium hydroxide 3 ~ 8.
5. a kind of mine laneway wall gas plugging coating according to claim 4, is characterized in that: the gross weight of described superfined flyash and cement accounts for 80% of powder; Described graphite and carbon black are conductive filler material, and gross weight accounts for 5% of powder; Described clorafin and aluminium hydroxide are fire retardant, and gross weight accounts for 15% of powder.
6. a kind of mine laneway wall gas plugging coating according to claim 4, is characterized in that: the particle diameter of described superfined flyash is 1 ~ 10 μm.
7. a kind of mine laneway wall gas plugging coating according to claim 4, is characterized in that: described cement is 325# Portland blast furnace slag cement or more cement of high index.
8. a kind of mine laneway wall gas plugging coating according to claim 1, is characterized in that, forms: water 25 ~ 40, liquid material 40 ~ 55, powder 100 when described coating uses according to following mass percent.
CN201510078403.2A 2015-02-10 2015-02-10 A kind of mine laneway wall gas plugging coating Active CN104650664B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106644823A (en) * 2016-12-21 2017-05-10 山西大学 Air tightness testing device for coal wall coating and air tightness testing method applied to air tightness testing device
CN109825268A (en) * 2019-02-22 2019-05-31 中国矿业大学 A kind of mining THIN COMPOSITE spray material and its preparation and application method
CN110540395A (en) * 2019-09-26 2019-12-06 张园月 Spraying material for coal mine underground roadway and preparation method
CN111808491A (en) * 2020-07-22 2020-10-23 垣曲县宏远特种防水材料厂 Roadway surface protection sealing material made of acrylate composite polymer emulsion modified inorganic material
CN112723833A (en) * 2021-01-28 2021-04-30 山西大学 Double seepage-proofing method based on coal-based solid waste

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101619187A (en) * 2008-06-30 2010-01-06 兖州煤业股份有限公司 Bolt net coal road spraying material
CN101781497A (en) * 2009-12-19 2010-07-21 山西潞安环保能源开发股份有限公司 Underground gas plugging coating in coal mine

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
CN101619187A (en) * 2008-06-30 2010-01-06 兖州煤业股份有限公司 Bolt net coal road spraying material
CN101781497A (en) * 2009-12-19 2010-07-21 山西潞安环保能源开发股份有限公司 Underground gas plugging coating in coal mine

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106644823A (en) * 2016-12-21 2017-05-10 山西大学 Air tightness testing device for coal wall coating and air tightness testing method applied to air tightness testing device
CN109825268A (en) * 2019-02-22 2019-05-31 中国矿业大学 A kind of mining THIN COMPOSITE spray material and its preparation and application method
CN110540395A (en) * 2019-09-26 2019-12-06 张园月 Spraying material for coal mine underground roadway and preparation method
CN111808491A (en) * 2020-07-22 2020-10-23 垣曲县宏远特种防水材料厂 Roadway surface protection sealing material made of acrylate composite polymer emulsion modified inorganic material
CN112723833A (en) * 2021-01-28 2021-04-30 山西大学 Double seepage-proofing method based on coal-based solid waste
CN112723833B (en) * 2021-01-28 2022-06-03 山西大学 Double seepage-proofing method based on coal-based solid waste
NL2028365B1 (en) * 2021-01-28 2022-08-31 Univ Shanxi Dual permeation-proof method based on coal-based solid wastes

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