CN114672069A - Modified cast stone/porous carbon composite material, preparation method thereof, epoxy resin-based composite material and epoxy floor coating - Google Patents
Modified cast stone/porous carbon composite material, preparation method thereof, epoxy resin-based composite material and epoxy floor coating Download PDFInfo
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- CN114672069A CN114672069A CN202210338031.2A CN202210338031A CN114672069A CN 114672069 A CN114672069 A CN 114672069A CN 202210338031 A CN202210338031 A CN 202210338031A CN 114672069 A CN114672069 A CN 114672069A
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- porous carbon
- composite material
- cast stone
- epoxy resin
- carbon composite
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 158
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 157
- 239000002131 composite material Substances 0.000 title claims abstract description 145
- 239000004575 stone Substances 0.000 title claims abstract description 126
- 239000003822 epoxy resin Substances 0.000 title claims abstract description 87
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 87
- 238000000576 coating method Methods 0.000 title claims abstract description 49
- 239000004593 Epoxy Substances 0.000 title claims abstract description 43
- 239000011248 coating agent Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000007822 coupling agent Substances 0.000 claims abstract description 20
- 239000002028 Biomass Substances 0.000 claims description 44
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 31
- 239000013543 active substance Substances 0.000 claims description 30
- 239000000126 substance Substances 0.000 claims description 21
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 18
- 239000002994 raw material Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 239000003960 organic solvent Substances 0.000 claims description 16
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 238000001994 activation Methods 0.000 claims description 14
- 238000010992 reflux Methods 0.000 claims description 14
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 12
- 230000004913 activation Effects 0.000 claims description 12
- 238000003763 carbonization Methods 0.000 claims description 12
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims description 11
- 238000013329 compounding Methods 0.000 claims description 10
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 10
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 8
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 8
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 8
- 230000003213 activating effect Effects 0.000 claims description 7
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 5
- 239000010907 stover Substances 0.000 claims description 5
- 239000011592 zinc chloride Substances 0.000 claims description 5
- 235000005074 zinc chloride Nutrition 0.000 claims description 5
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 4
- 239000012298 atmosphere Substances 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- 239000001110 calcium chloride Substances 0.000 claims description 4
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 4
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 4
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 3
- 235000011148 calcium chloride Nutrition 0.000 claims description 3
- 238000010000 carbonizing Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 235000011147 magnesium chloride Nutrition 0.000 claims description 3
- AQIXEPGDORPWBJ-UHFFFAOYSA-N pentan-3-ol Chemical compound CCC(O)CC AQIXEPGDORPWBJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 3
- 239000004317 sodium nitrate Substances 0.000 claims description 3
- 235000010344 sodium nitrate Nutrition 0.000 claims description 3
- 239000008096 xylene Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000002253 acid Substances 0.000 abstract description 14
- 239000003513 alkali Substances 0.000 abstract description 14
- 239000010954 inorganic particle Substances 0.000 abstract description 12
- 229920005989 resin Polymers 0.000 abstract description 8
- 239000011347 resin Substances 0.000 abstract description 8
- 239000000853 adhesive Substances 0.000 abstract description 7
- 230000001070 adhesive effect Effects 0.000 abstract description 7
- 230000003014 reinforcing effect Effects 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract description 3
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 description 64
- 239000010902 straw Substances 0.000 description 38
- 239000000843 powder Substances 0.000 description 27
- 239000008367 deionised water Substances 0.000 description 21
- 229910021641 deionized water Inorganic materials 0.000 description 21
- 238000002156 mixing Methods 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- 230000000052 comparative effect Effects 0.000 description 16
- 241000209140 Triticum Species 0.000 description 14
- 235000021307 Triticum Nutrition 0.000 description 14
- 238000004140 cleaning Methods 0.000 description 13
- 238000007873 sieving Methods 0.000 description 13
- 238000001291 vacuum drying Methods 0.000 description 12
- 238000001816 cooling Methods 0.000 description 11
- 238000004108 freeze drying Methods 0.000 description 11
- 239000011261 inert gas Substances 0.000 description 11
- 238000005406 washing Methods 0.000 description 11
- 230000004580 weight loss Effects 0.000 description 11
- 238000005303 weighing Methods 0.000 description 10
- 239000002244 precipitate Substances 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 240000000111 Saccharum officinarum Species 0.000 description 7
- 235000007201 Saccharum officinarum Nutrition 0.000 description 7
- 240000008042 Zea mays Species 0.000 description 7
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 7
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 7
- 235000005822 corn Nutrition 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000003973 paint Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000005054 agglomeration Methods 0.000 description 5
- 230000002776 aggregation Effects 0.000 description 5
- 239000002585 base Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 244000061456 Solanum tuberosum Species 0.000 description 3
- 235000002595 Solanum tuberosum Nutrition 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000010298 pulverizing process Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 235000017060 Arachis glabrata Nutrition 0.000 description 1
- 244000105624 Arachis hypogaea Species 0.000 description 1
- 235000010777 Arachis hypogaea Nutrition 0.000 description 1
- 235000018262 Arachis monticola Nutrition 0.000 description 1
- 235000014698 Brassica juncea var multisecta Nutrition 0.000 description 1
- 235000006008 Brassica napus var napus Nutrition 0.000 description 1
- 240000000385 Brassica napus var. napus Species 0.000 description 1
- 235000006618 Brassica rapa subsp oleifera Nutrition 0.000 description 1
- 235000004977 Brassica sinapistrum Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000020232 peanut Nutrition 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
Classifications
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The application discloses a modified cast stone/porous carbon composite material, a preparation method thereof, an epoxy resin-based composite material and an epoxy floor coating. The modified cast stone/porous carbon composite material comprises the following components in parts by weight: 10 parts by weight of porous carbon; 2-10 parts of cast stone; 0.08-0.14 weight part of coupling agent. The application provides a modified cast stone/porous carbon composite material under the synergistic effect of each component, can show the reunion of each component among the reduction epoxy resin based composite material, increases the effective linking between each component, improves the compatibility and the dispersibility of inorganic particle in organic resin substrate, reinforcing epoxy resin based composite material's comprehensive properties, and then improves hardness, adhesive force and acid and alkali resistance of epoxy terrace coating.
Description
Technical Field
The application belongs to the technical field of epoxy floor coatings, and particularly relates to a modified cast stone/porous carbon composite material, a preparation method thereof, an epoxy resin-based composite material and an epoxy floor coating.
Background
Currently, terrace coatings are widely applied to places such as modern industrial grounds, garage grounds, commercial grounds and the like. As for the film-forming substance, the floor coating can be classified into epoxy floor coating, polyurethane floor coating, epoxy phenol-formaldehyde floor coating, and the like, wherein the epoxy floor coating is relatively good in technical aspect and development speed.
In order to further improve the hardness, wear resistance and other properties of the epoxy floor coating, researchers often adopt a method of introducing inorganic particles into the common epoxy floor coating, but due to the inherent properties of the inorganic particles and the poor dispersibility of the inorganic particles in organic substances such as epoxy resin and the like, the inorganic particles have the problems of easy agglomeration, low stability and the like in the system, and further the epoxy floor coating has low hardness, small adhesive force and no acid and alkali resistance.
Disclosure of Invention
In view of the above, the application provides a modified cast stone/porous carbon composite material, a preparation method thereof, an epoxy resin-based composite material and an epoxy floor coating, and aims to solve the problems of low hardness, small adhesion and no acid and alkali resistance of the epoxy floor coating caused by poor dispersibility of inorganic particles and an organic resin substrate.
The application provides in a first aspect a modified cast stone/porous carbon composite material comprising the following components in parts by weight:
porous carbon, 10 parts by weight;
2-10 parts of cast stone;
0.08-0.14 weight part of coupling agent.
According to any of the embodiments of the first aspect of the present application, the coupling agent is selected from one or more of gamma-methacryloxypropyltrimethoxysilane, gamma-methacryloxypropylmethyldimethoxysilane, and gamma-methacryloxypropyltriethoxysilane.
According to any embodiment of the first aspect of the present application, the porous carbon has a specific surface area of 500 to 850m2/g。
The second aspect of the application provides a preparation method of a modified cast stone/porous carbon composite material, which comprises the following steps:
carbonizing and activating: adding a chemical active agent into the biomass raw material in an inert atmosphere for carbonization and activation to obtain porous carbon;
and (3) stone casting compounding: adding cast stone into the porous carbon, adding the coupling agent and the organic solvent which are uniformly mixed, refluxing, centrifuging and drying to obtain the modified cast stone/porous carbon composite material.
According to any embodiment of the second aspect of the present application, the biomass raw material is herbaceous plant straw. In particular to one or more of wheat straw, rape straw, corn straw, cotton straw, potato straw, sugarcane straw, peanut straw, bean straw and other crop straws.
According to any embodiment of the second aspect of the present application, the chemical active agent comprises an alkaline active agent and/or a salt-like active agent.
According to any embodiment of the second aspect of the present application, the above alkaline active agent is selected from one or more of sodium hydroxide, potassium hydroxide and calcium hydroxide.
According to any embodiment of the second aspect of the present application, the salt-type active agent is selected from one or more of sodium carbonate, potassium carbonate, calcium carbonate, zinc nitrate, calcium nitrate, sodium nitrate, zinc chloride, calcium chloride and magnesium chloride.
According to any embodiment of the second aspect of the present application, the above organic solvent is selected from one or more of methanol, ethanol, ethyl propanol, acetone, benzene, toluene and xylene.
According to any embodiment of the second aspect of the present application, in the carbonization and activation step, the weight ratio of the biomass raw material to the chemical active agent is 1 (0.5-1.5).
According to any embodiment of the second aspect of the present application, in the cast stone compounding step, the weight ratio of the cast stone to the porous carbon is (0.5-1): 1, and the weight ratio of the coupling agent to the organic solvent is (0.4-0.7): 100.
In a third aspect, the present application provides an epoxy resin-based composite material comprising the modified cast stone/porous carbon composite material of the first aspect of the present application or the modified cast stone/porous carbon composite material prepared by the method of the second aspect of the present application.
In a fourth aspect of the present application there is provided a terrace coating comprising a modified cast stone/porous carbon composite of the first aspect of the present application or a modified cast stone/porous carbon composite produced by a method of the second aspect of the present application or an epoxy resin based composite of the third aspect of the present application.
Compared with the prior art, the application has at least the following beneficial effects:
(1) the modified cast stone/porous carbon composite material provided by the application can be well dispersed and compatible with an organic resin base material under the action of the coupling agent, and can lay a good foundation for enhancing the comprehensive performance of an epoxy resin-based composite material.
The biomass raw material is converted into porous carbon after carbonization and activation, the porous carbon can provide a larger specific surface area for the deposition of cast stone, so that the cast stone can be deposited on the surface of the porous carbon and can enter pores of the porous carbon, and the modified cast stone/porous carbon composite material is obtained. In addition, the coupling agent can reduce the interface action between the modified cast stone/porous carbon composite material and the epoxy resin, and improve the compatibility and the dispersibility of inorganic particles in an organic resin base material, thereby greatly improving the performance of the epoxy resin-based composite material.
(2) The preparation method of the modified cast stone/porous carbon composite material is simple in process, short in time consumption, low in equipment requirement, well compatible with the existing process, and extremely high in large-scale application potential.
(3) The application provides an epoxy resin matrix composite can show the reunion that reduces between each component under modified cast stone/porous carbon composite and epoxy, increases the effective linking area between each component, and reinforcing epoxy resin matrix composite's performance, and then improve the hardness, adhesive force and the acid and alkali resistance of epoxy terrace coating.
(4) The application provides an epoxy terrace coating, higher hardness, good adhesive force and excellent acid and alkali resistance have. According to the embodiment of the application, the hardness of the epoxy floor coating is as high as 6H, the adhesion can reach 0 grade (the adhesion is 0 grade is optimal), and the acid and alkali resistance is excellent.
Detailed Description
In order to make the application purpose, technical solution and beneficial technical effects of the present application clearer, the present application is further described in detail with reference to the following embodiments. It should be understood that the embodiments described in this specification are only for the purpose of explaining the present application and are not intended to limit the present application.
For the sake of brevity, only some numerical ranges are explicitly disclosed herein. However, any lower limit may be combined with any upper limit to form ranges not explicitly recited; and any lower limit may be combined with any other lower limit to form a range not explicitly recited, and similarly any upper limit may be combined with any other upper limit to form a range not explicitly recited. Also, although not explicitly recited, each point or individual value between endpoints of a range is encompassed within the range. Thus, each point or individual value may, as its lower or upper limit, be combined with any other point or individual value or with other lower or upper limits to form ranges not explicitly recited.
In the description of the present application, it is to be noted that, unless otherwise specified, "above" and "below" are inclusive of the present number, and "plural" of "one or more" means two or more.
The above summary of the present application is not intended to describe each disclosed embodiment or every implementation of the present application. The following description more particularly exemplifies illustrative embodiments. At various points throughout this application, guidance is provided through a list of embodiments that can be used in various combinations. In each instance, the list is merely a representative group and should not be construed as exhaustive.
In recent years, various types of inorganic particles have been introduced into epoxy resin coating systems, such as wollastonite, barium sulfate, quartz powder, talcum powder, titanium dioxide, calcium carbonate, and the like, but most of these researches are based on the physical action between the inorganic particles and organic polymers, which often causes the problems of agglomeration of the inorganic particles, poor stability, and the like, and further causes the poor performance of epoxy floor coatings.
Based on the above, the inventors have conducted a great deal of research, and have aimed at providing a modified cast stone/porous carbon composite material which can be well dispersed and compatible with an organic resin substrate, so that the epoxy resin-based composite material has good application properties, and the hardness, adhesion and acid and alkali resistance of the epoxy floor coating are improved.
Modified cast stone/porous carbon composite material
The embodiment of the first aspect of the application provides a modified cast stone/porous carbon composite material, which comprises the following components in parts by weight:
10 parts by weight of porous carbon;
2-10 parts of cast stone;
0.08-0.14 weight part of coupling agent.
The modified cast stone/porous carbon composite material provided by the embodiment of the application can be well compatible and dispersed with an organic resin base material, and can lay a good foundation for enhancing the comprehensive performance of an epoxy resin-based composite material.
In some embodiments, the coupling agent may be selected from one or more of gamma-methacryloxypropyltrimethoxysilane, gamma-methacryloxypropylmethyldimethoxysilane, and gamma-methacryloxypropyltriethoxysilane.
According to the embodiment of the application, the coupling agent molecule contains two groups with different chemical properties, one group is an inorganophilic group and is easy to react with hydroxyl on the surfaces of porous carbon and cast stone; the other is an organophilic group which can be crosslinked with epoxy resin, thereby improving the interface action between inorganic materials and organic epoxy resin, improving the compatibility and the dispersibility of inorganic particles in organic resin base materials, and further enhancing the performance of epoxy resin matrix composite materials.
In some embodiments, the porous carbon has a specific surface area of 500 to 850m2/g。
According to the embodiment of the application, the porous carbon with the specific surface area is used as the modified filler, the cast stone can fully enter the void structure of the porous carbon, the contact area of the modified cast stone/porous carbon composite material and other components is increased, the acting force among the components is better exerted, and the performance of the epoxy resin-based composite material is enhanced. The specific surface area of the porous carbon is less than 500m2The casting stone and the epoxy resin cannot fully enter the void structure of the porous carbon, so that the contact area among the components is reduced, and the dispersibility and the compatibility of the components are poor; if the specific surface area of the porous carbon is above 850m2And/g, collapse of the porous carbon structure is easily caused, and the performance of the modified cast stone/porous carbon composite material is influenced.
In some embodiments, the weight loss of the porous carbon is 3 to 5 wt% at 1200 ℃.
Preparation method of modified cast stone/porous carbon composite material
The second aspect of the application also provides a preparation method of the modified cast stone/porous carbon composite material, which comprises the following steps:
s10, carbonizing and activating: adding a chemical active agent into the biomass raw material in an inert atmosphere for carbonization and activation to obtain porous carbon;
s20, compounding cast stones: and adding cast stone into the porous carbon, adding the uniformly mixed coupling agent and organic solvent, refluxing, centrifuging and drying to obtain the modified cast stone/porous carbon composite material.
According to the embodiment of the present application, in the carbonization and activation step, in order to prevent the biomass raw material from being oxidized, the carbonization and activation are performed in an inert atmosphere, and the inert gas may be nitrogen or argon.
According to the embodiment of the application, in the step of compounding the cast stone, the reflux operation can reduce the dissipation loss of each component, so that the components participate in the reaction as much as possible, the utilization rate is improved, and the air pollution caused by the dissipation of the components can be reduced. In the compounding step, the cast stone can be deposited on the surface of the porous carbon and can enter pores of the porous carbon with high specific surface area, and the coupling agent can reduce the agglomeration of all components and improve the compatibility and the dispersibility of the modified cast stone/porous carbon composite material in epoxy resin. In addition, due to the good wear resistance and chemical stability of the cast stone and the porous carbon, the modified cast stone/porous carbon composite material can be used as a reinforcing agent, and the performance of the epoxy resin-based composite material is improved.
In some embodiments, the step S10 further includes:
s100, cleaning, drying, crushing and sieving the biomass raw material to obtain biomass powder.
S101, adding a chemical active agent into the biomass powder for carbonization and activation, washing and drying to obtain the porous carbon, wherein the weight ratio of the biomass powder to the chemical active agent is 1 (0.5-1.5).
In some embodiments, the cleaning in S100 is performed by sequentially stirring and cleaning with absolute ethanol and deionized water for 3-5 times at a stirring speed of 500-800 rpm for 10-20 min.
The drying in S100 is vacuum drying at 70-85 ℃ for 36-60 h.
The pulverization in the above S100 means that a high-speed universal pulverizer is used for pulverization, the pulverization speed is 3500-4200 rpm, and the time is 10-15 min.
The sieving in the step S100 is to perform sieving treatment through a sieve of 80-120 meshes.
In the step S101, the temperature for carbonization and activation is 750-900 ℃, the time is 90-150 min, and the drying in the step is freeze drying.
In some embodiments, the biomass feedstock may be selected from one or more of wheat straw, canola straw, corn stover, cotton stover, potato stover, and sugar cane stover. For example, the biomass raw material can be wheat straw, cotton straw, sugarcane straw, or mixed straw composed of wheat straw and corn straw. The biomass raw material can also be any one of the above biomass raw materials or a mixed raw material consisting of a plurality of biomass raw materials.
According to the embodiment of the application, the biomass raw material can be converted into porous carbon after carbonization and activation treatment, and the porous carbon can provide a larger specific surface area for the effective connection of the deposition of cast stone and epoxy resin, so that a good foundation is laid for improving the performance of the epoxy resin-based composite material.
In some embodiments, the chemical active agent comprises an alkaline active agent and/or a salt-type active agent.
In some embodiments, the alkaline active agent may be selected from one or more of sodium hydroxide, potassium hydroxide, and calcium hydroxide.
According to the embodiment of the application, the alkaline active agent consumes carbon in the biomass raw material mainly in the form of salt substances during the activation process, so that the biomass raw material generates a proper amount of pore structures.
In some embodiments, the salt-type active agent may be selected from one or more of sodium carbonate, potassium carbonate, calcium carbonate, zinc nitrate, calcium nitrate, sodium nitrate, zinc chloride, calcium chloride, and magnesium chloride. For example, the salt-type active agent can be sodium carbonate, calcium nitrate, or a mixture of zinc chloride and calcium chloride. The salt active agent can also be any one of the above salt active agents or a mixture of a plurality of salt active agents.
According to the embodiment of the application, the salt-type active agent has a dehydration effect in the activation process, the dehydration effect is beneficial to the occurrence of pyrolysis reaction, the formation of tar is reduced, and a proper amount of microporous structures are generated on the biomass raw material.
In some embodiments, the weight ratio of the biomass powder to the chemical active agent can be 1 (0.5-1.5).
According to the embodiment of the application, the weight ratio of the biomass powder to the chemical activating agent is 1 (0.5-1.5), and the dosage of the chemical activating agent is favorable for preparing the porous carbon with moderate specific surface area. The use amount of the chemical activating agent is too small, so that the porous carbon has poor pore structure and low specific surface area; too much chemical activating agent can cause higher carbonization and activation degrees, damage the integral structure of the porous carbon, even collapse the structure, and be not beneficial to compounding the cast stone and the epoxy resin.
In some embodiments, the step S20 further includes:
s201, adding cast stone into porous carbon, adding the uniformly mixed coupling agent and organic solvent, refluxing and stirring for 4-8h, centrifuging, and drying at 65-85 ℃ for 10-20 h to obtain the modified cast stone/porous carbon composite material.
In some embodiments, the cast stone is a powder having a particle size of 18-38 μm.
In some embodiments, the organic solvent may be selected from one or more of methanol, ethanol, ethyl propanol, acetone, benzene, toluene, and xylene. For example, the organic solvent may be methanol, acetone, toluene, or a mixture of methanol and ethanol. The organic solvent can also be any one of the above organic solvents or a mixture of a plurality of organic solvents.
According to the embodiment of the application, the organic solvent has good compatibility with other components, and is beneficial to compounding of cast stone and porous carbon.
In some embodiments, the weight ratio of the cast stone to the porous carbon is (0.5-1): 1, and the weight ratio of the coupling agent to the organic solvent is (0.4-0.7): 100.
According to the embodiment of the application, the cast stone and the porous carbon in the weight ratio can be fully deposited on the surface and in the gaps of the porous carbon in the modification and compounding process, and meanwhile, the cast stone cannot be stacked. The coupling agent and the organic solvent in the weight ratio are more beneficial to the dispersion and compatibility of the cast stone and the porous carbon.
The preparation method of the modified cast stone/porous carbon composite material according to the embodiment of the application is simple and easy to implement, has low requirements on equipment, can be well compatible with the existing process, and has great large-scale application potential.
Epoxy resin-based composite material
The third aspect of the application also provides an epoxy resin-based composite material, which comprises the modified cast stone/porous carbon composite material provided by the embodiment of the first aspect or the modified cast stone/porous carbon composite material prepared by the method of the second aspect.
According to the epoxy resin-based composite material provided by the application, the epoxy resin-based composite material has excellent stability and film-forming property due to good dispersibility and compatibility among the components, so that the epoxy resin-based composite material can be applied to the aspects of coatings, paints and the like.
S30, the preparation steps of the epoxy resin-based composite material comprise: and uniformly stirring the modified cast stone/porous carbon composite material and epoxy resin to obtain the epoxy resin-based composite material.
According to the embodiment of the application, in the steps, the epoxy resin can be coated on the surface of the modified cast stone/porous carbon composite material and can enter the porous structure of the modified cast stone/porous carbon composite material, so that the effective connection among the components is improved, and the performance of the epoxy resin-based composite material is further improved.
In some embodiments, the step S30 further includes:
and stirring and mixing the modified cast stone/porous carbon composite material and epoxy resin at the temperature of 22-28 ℃ for 60-90 min to obtain the epoxy resin-based composite material.
In some embodiments, the weight ratio of the modified cast stone/porous carbon composite material to the epoxy resin is (10-15): 100.
According to the embodiment of the application, when the weight ratio of the modified cast stone/porous carbon composite material to the epoxy resin is (10-15): 100, the epoxy resin can be coated on the surface of the modified cast stone/porous carbon composite material and can enter the porous structure of the modified composite material, so that the performance of the epoxy resin-based composite material is fully improved. If the specific gravity of the epoxy resin is smaller, the modified cast stone/porous carbon composite material is not favorably dispersed in a material system, and the film forming property of the floor coating can be reduced.
Epoxy floor coating
The fourth aspect of the application also provides an epoxy floor coating, which comprises the modified cast stone/porous carbon composite material provided by the embodiment of the first aspect or the modified cast stone/porous carbon composite material prepared by the method of the second aspect or the epoxy resin-based composite material provided by the third aspect.
According to the epoxy terrace coating provided by the embodiment of the application, the modified cast stone/porous carbon composite material or epoxy resin-based composite material provided by the application has stronger hardness, good adhesive force and excellent acid and alkali resistance. Therefore, the epoxy floor coating can be applied to industrial ground, garage ground, commercial ground and other places.
Examples
The present disclosure is more particularly described in the following examples that are intended as illustrative only, since various modifications and changes within the scope of the present disclosure will be apparent to those skilled in the art. Unless otherwise indicated, all parts, percentages, and ratios reported in the following examples are on a weight basis, and all reagents used in the examples are commercially available or synthesized according to conventional methods and can be used directly without further treatment, and the equipment used in the examples is commercially available.
Example 1
Modified cast stone/porous carbon composite material:
(1) stirring and cleaning wheat straws for 3 times by using absolute ethyl alcohol and deionized water in sequence, wherein the stirring speed is 500rpm, the stirring time is 10min, then placing the wheat straws at 70 ℃ for vacuum drying for 36h, performing crushing treatment by using a high-speed universal crusher, wherein the crushing speed is 3500rpm, the crushing time is 10min, and finally performing sieving treatment by using a 80-mesh sieve to obtain biomass powder;
weighing 1g of biomass powder, adding 0.5g of sodium carbonate, reacting at 750 ℃ for 90min under the protection of inert gas, taking out after cooling, stirring and washing for 3 times by using deionized water, wherein the stirring speed is 300rpm, and the time is 10min, and freeze-drying to obtain porous carbon; the specific surface area of the porous carbon is 500m2(ii)/g, weight loss at 1200 ℃ of 3 wt%;
(2) fully mixing 0.08g of gamma-methacryloxypropyl trimethoxy silane and 20g of absolute ethyl alcohol (the weight ratio is 0.4: 100), adding 5g of cast stone and 10g of porous carbon (the weight ratio is 0.5: 1), stirring and reacting for 4 hours at normal temperature in a reflux state, centrifugally collecting precipitates, and drying for 10 hours at 65 ℃ to obtain the modified cast stone/porous carbon composite material.
Epoxy resin-based composite material:
mixing the components in a weight ratio of 10: the 100 modified cast stone/porous carbon composite material and epoxy resin are stirred and mixed for 60min at 25 ℃ to obtain the epoxy resin-based composite material.
Example 2
Modified cast stone/porous carbon composite material:
(1) sequentially stirring and cleaning rape straws for 3 times by using absolute ethyl alcohol and deionized water at the stirring speed of 600rpm for 10min, then placing at 75 ℃ for vacuum drying for 48h, crushing by using a high-speed universal crusher at the crushing speed of 3800rpm for 10min, and finally sieving by using a 80-mesh sieve to obtain biomass powder;
weighing 1g of biomass powder, adding 0.5g of sodium hydroxide, reacting at 750 ℃ for 100min under the protection of inert gas, taking out after cooling, stirring and washing for 3 times by using deionized water at the stirring speed of 300rpm for 20min, and freeze-drying to obtain porous carbon; the specific surface area of the porous carbon is 600 m2(ii)/g, weight loss at 1200 ℃ of 3 wt%;
(2) fully mixing 0.1g of gamma-methacryloxypropyltrimethoxysilane and 20g of absolute ethyl alcohol (the weight ratio is 0.5: 100), adding 5g of cast stone and 10g of porous carbon (the weight ratio is 0.5: 1), stirring at normal temperature for reaction for 5 hours under a reflux state, centrifugally collecting precipitates, and drying at 65 ℃ for 15 hours to obtain the modified cast stone/porous carbon composite material.
Epoxy resin-based composite material:
mixing the components in a weight ratio of 10: the 100 modified cast stone/porous carbon composite material and epoxy resin are stirred and mixed for 70min at 25 ℃ to obtain the epoxy resin-based composite material.
Example 3
Modified cast stone/porous carbon composite material:
(1) stirring and cleaning the corn straws for 3 times by using absolute ethyl alcohol and deionized water in sequence, wherein the stirring speed is 800rpm, the stirring time is 20min, then placing the corn straws at 80 ℃ for vacuum drying for 48h, performing crushing treatment by using a high-speed universal crusher, wherein the crushing speed is 3800rpm, the crushing time is 15min, and finally performing sieving treatment by using a 100-mesh sieve to obtain biomass powder;
weighing 1g of biomass powder, addingAdding 0.8g of zinc nitrate, reacting for 120min at 800 ℃ under the protection of inert gas, taking out after cooling, stirring and washing for 4 times by using deionized water, wherein the stirring speed is 350 rpm, the time is 20min, and freeze-drying to obtain porous carbon; the specific surface area of the porous carbon is 650 m2(ii)/g, weight loss at 1200 ℃ of 4 wt%;
(2) fully mixing 0.1g of gamma-methacryloxypropyltrimethoxysilane and 20g of absolute ethyl alcohol (the weight ratio is 0.5: 100), adding 6g of cast stone and 10g of porous carbon (the weight ratio is 0.6: 1), stirring at normal temperature for reaction for 6 hours under a reflux state, centrifugally collecting precipitates, and drying at 75 ℃ for 15 hours to obtain the modified cast stone/porous carbon composite material.
Epoxy resin-based composite material:
mixing the following components in percentage by weight of 12: the 100 modified cast stone/porous carbon composite material and epoxy resin are stirred and mixed for 70min at 25 ℃ to obtain the epoxy resin-based composite material.
Example 4
Modified cast stone/porous carbon composite material:
(1) stirring and cleaning the corn straws for 4 times by using absolute ethyl alcohol and deionized water in sequence, wherein the stirring speed is 800rpm, the stirring time is 20min, then placing the corn straws at 80 ℃ for vacuum drying for 60h, performing crushing treatment by using a high-speed universal crusher, wherein the crushing speed is 4000rpm, the crushing time is 15min, and finally performing sieving treatment by using a 100-mesh screen to obtain biomass powder;
weighing 1g of biomass powder, adding 1g of zinc chloride, reacting at 800 ℃ for 150min under the protection of inert gas, taking out after cooling, stirring and washing with deionized water for 5 times at the stirring speed of 450rpm for 20min, and freeze-drying to obtain porous carbon; the specific surface area of the porous carbon is 780m2/g, and the weight loss at 1200 ℃ is 4 wt%;
(2) fully mixing 0.12g of gamma-methacryloxypropyltrimethoxysilane and 20g of absolute ethyl alcohol (the weight ratio is 0.6: 100), adding 8g of cast stone and 10g of porous carbon (the weight ratio is 0.8: 1), stirring at normal temperature for reaction for 7 hours under a reflux state, centrifugally collecting precipitates, and drying at 80 ℃ for 10 hours to obtain the modified cast stone/porous carbon composite material.
Epoxy resin-based composite material:
mixing the following components in percentage by weight 13: the 100 modified cast stone/porous carbon composite material and epoxy resin are stirred and mixed for 70min at 25 ℃ to obtain the epoxy resin-based composite material.
Example 5
Modified cast stone/porous carbon composite material:
(1) stirring and cleaning potato straws for 4 times by using absolute ethyl alcohol and deionized water in sequence, wherein the stirring speed is 800rpm, the stirring time is 20min, then placing at 70 ℃ for vacuum drying for 60h, performing crushing treatment by using a high-speed universal crusher, wherein the crushing speed is 4000rpm, the crushing time is 13min, and finally performing sieving treatment by using a 120-mesh sieve to obtain biomass powder for later use;
weighing 1g of biomass powder, adding 1.3g of calcium hydroxide, reacting at 850 ℃ for 150min under the protection of inert gas, taking out after cooling, stirring and washing for 3 times by using deionized water, wherein the stirring speed is 500rpm, and the time is 15min, and freeze-drying to obtain porous carbon; the specific surface area of the porous carbon is 730 m2(ii)/g, weight loss at 1200 ℃ of 5 wt%;
(2) fully mixing 0.12g of gamma-methacryloxypropyltrimethoxysilane and 20g of absolute ethyl alcohol (the weight ratio is 0.6: 100), adding 9g of cast stone and 10g of porous carbon (the weight ratio is 0.9: 1), stirring at normal temperature for reaction for 8 hours under a reflux state, centrifugally collecting precipitates, and drying at 80 ℃ for 20 hours to obtain the modified cast stone/porous carbon composite material.
Epoxy resin-based composite material:
mixing the following components in a weight ratio of 14: the 100 modified cast stone/porous carbon composite material and epoxy resin are stirred and mixed for 75min at 25 ℃ to obtain the epoxy resin-based composite material.
Example 6
Modified cast stone/porous carbon composite material:
(1) stirring and cleaning sugarcane straws with absolute ethyl alcohol and deionized water for 5 times in sequence at a stirring speed of 800rpm for 20min, then placing the cleaned sugarcane straws at 85 ℃ for vacuum drying for 60h, crushing the cleaned sugarcane straws by a high-speed universal crusher at a crushing speed of 4200rpm for 15min, and finally sieving the crushed sugarcane straws by a 120-mesh sieve to obtain biomass powder;
weighing 1g of biomass powder, adding 1.5g of magnesium chloride, reacting at 900 ℃ for 150min under the protection of inert gas, taking out after cooling, stirring and washing for 5 times by using deionized water, wherein the stirring speed is 500rpm, and the time is 20min, and freeze-drying to obtain porous carbon; the specific surface area of the porous carbon is 850m2(ii)/g, weight loss at 1200 ℃ of 5 wt%;
(2) fully mixing 0.14g of gamma-methacryloxypropyl trimethoxy silane and 20g of absolute ethyl alcohol (the weight ratio is 0.7: 100), adding 10g of cast stone and 10g of porous carbon (the weight ratio is 1: 1), stirring and reacting for 8 hours at normal temperature in a reflux state, centrifuging, collecting precipitates, and drying for 20 hours at 85 ℃ to obtain the modified cast stone/porous carbon composite material.
Epoxy resin-based composite material:
mixing the components in a weight ratio of 15: the 100 modified cast stone/porous carbon composite material and epoxy resin are stirred and mixed for 90min at 25 ℃ to obtain the epoxy resin-based composite material.
Comparative example
Comparative example 1
Epoxy resin-based composite material:
(1) stirring and cleaning wheat straws for 3 times by using absolute ethyl alcohol and deionized water in sequence, wherein the stirring speed is 500rpm, the stirring time is 10min, then placing the wheat straws at 70 ℃ for vacuum drying for 36h, performing crushing treatment by using a high-speed universal crusher, wherein the crushing speed is 3500rpm, the crushing time is 10min, and finally performing sieving treatment by using a 80-mesh sieve to obtain biomass powder;
weighing 1g of biomass powder, adding 0.5g of sodium carbonate, reacting at 750 ℃ for 90min under the protection of inert gas, taking out after cooling, stirring and washing for 3 times by using deionized water, wherein the stirring speed is 300rpm, and the time is 10min, and freeze-drying to obtain porous carbon; the specific surface area of the porous carbon is 500m2(ii)/g, weight loss at 1200 ℃ of 3 wt%;
(2) mixing the components in a weight ratio of 10: stirring and mixing the 100 porous carbon and the epoxy resin at 25 ℃ for 60min to obtain the epoxy resin-based composite material.
Comparative example 2
Modified cast stone/porous carbon composite material:
(1) stirring and cleaning wheat straws for 3 times by using absolute ethyl alcohol and deionized water in sequence, wherein the stirring speed is 500rpm, the stirring time is 10min, then placing the wheat straws at 70 ℃ for vacuum drying for 36h, performing crushing treatment by using a high-speed universal crusher, wherein the crushing speed is 3500rpm, the crushing time is 10min, and finally performing sieving treatment by using a 80-mesh sieve to obtain biomass powder;
weighing 1g of biomass powder, adding 0.5g of sodium carbonate, reacting at 750 ℃ for 90min under the protection of inert gas, taking out after cooling, stirring and washing for 3 times by using deionized water, wherein the stirring speed is 300rpm, and the time is 10min, and freeze-drying to obtain porous carbon; the specific surface area of the porous carbon is 500m2(ii)/g, weight loss at 1200 ℃ of 3 wt%;
(2) and adding 20g of absolute ethyl alcohol into 5g of cast stone and 10g of porous carbon (the weight ratio is 0.5: 1), stirring and reacting for 4 hours at normal temperature in a reflux state, centrifugally collecting precipitates, and drying for 10 hours at 65 ℃ to obtain the modified cast stone/porous carbon composite material.
Epoxy resin-based composite material:
mixing the components in a weight ratio of 10: the 100 modified cast stone/porous carbon composite material and epoxy resin are stirred and mixed for 60min at 25 ℃ to obtain the epoxy resin-based composite material.
Comparative example 3
Modified cast stone/porous carbon composite material:
(1) stirring and cleaning wheat straws for 3 times by using absolute ethyl alcohol and deionized water in sequence, wherein the stirring speed is 500rpm, the stirring time is 10min, then placing the wheat straws at 70 ℃ for vacuum drying for 36h, performing crushing treatment by using a high-speed universal crusher, wherein the crushing speed is 3500rpm, the crushing time is 10min, and finally performing sieving treatment by using a 80-mesh sieve to obtain biomass powder;
weighing 1g of biomass powder, adding 0.2g of sodium carbonate, reacting at 750 ℃ for 90min under the protection of inert gas, taking out after cooling, stirring and washing for 3 times by using deionized water at the stirring speed of 300rpm for 10min, and freeze-drying to obtain porous carbon; the specific surface area of the porous carbon is 350m2(ii)/g, weight loss at 1200 ℃ of 3 wt%;
(2) fully mixing 0.04g of gamma-methacryloxypropyltrimethoxysilane and 20g of absolute ethyl alcohol (the weight ratio is 0.2: 100), adding 15g of cast stone and 10g of porous carbon (the weight ratio is 1.5: 1), stirring at normal temperature for reaction for 4 hours under a reflux state, centrifugally collecting precipitates, and drying at 65 ℃ for 10 hours to obtain the modified cast stone/porous carbon composite material.
Epoxy resin-based composite material:
mixing the components in a weight ratio of 10: the 100 modified cast stone/porous carbon composite material and epoxy resin are stirred and mixed for 60min at 25 ℃ to obtain the epoxy resin-based composite material.
Comparative example 4
Modified cast stone/porous carbon composite material:
(1) stirring and cleaning wheat straws for 3 times by using absolute ethyl alcohol and deionized water in sequence, wherein the stirring speed is 500rpm, the stirring time is 10min, then placing the wheat straws at 70 ℃ for vacuum drying for 36h, performing crushing treatment by using a high-speed universal crusher, wherein the crushing speed is 3500rpm, the crushing time is 10min, and finally performing sieving treatment by using a 80-mesh sieve to obtain biomass powder;
weighing 1g of biomass powder, adding 2g of sodium carbonate, reacting at 750 ℃ for 90min under the protection of inert gas, taking out after cooling, stirring and washing for 3 times by using deionized water, wherein the stirring speed is 300rpm, and the time is 10min, and freeze-drying to obtain porous carbon; the specific surface area of the porous carbon is 200m2(iv)/g, weight loss at 1200 ℃ of 3 wt%;
(2) fully mixing 0.08g of gamma-methacryloxypropyltrimethoxysilane and 20g of absolute ethyl alcohol (the weight ratio is 0.4: 100), adding 4g of cast stone and 10g of porous carbon (the weight ratio is 0.4: 1), stirring at normal temperature for reaction for 4 hours under a reflux state, centrifugally collecting precipitates, and drying at 65 ℃ for 10 hours to obtain the modified cast stone/porous carbon composite material.
Epoxy resin-based composite material:
mixing the following components in percentage by weight: the 100 modified cast stone/porous carbon composite material and epoxy resin are stirred and mixed for 60min at 25 ℃ to obtain the epoxy resin-based composite material.
Epoxy floor coating:
the epoxy resin-based composite materials prepared in examples 1-6 and comparative examples 1-4 are mixed with a curing agent 593 and an organic silicon defoamer Silok 4013 according to the weight ratio of 100: 25: 0.1, stirring and mixing uniformly to obtain the epoxy floor coating.
The epoxy floor coating is placed in a vacuum drying oven for defoaming treatment, after defoaming, the epoxy floor coating is coated on tinplate (3cm multiplied by 5cm), and after standing for 1h at 25 ℃, the epoxy floor coating is placed in a blast drying oven for heating and curing. And after the solidification is finished, slowly cooling the sample to 25 ℃, taking out and standing for 24 hours to obtain the epoxy floor coating.
Test section
The epoxy floor coatings of examples 1-6 and comparative examples 1-4 were tested for their correlation properties by the following test methods:
(1) hardness: the hardness of the epoxy floor coating is determined according to GB/T6739-2006 paint film hardness determination by a color paint and varnish pencil method.
(2) Adhesion force: the adhesion of epoxy floor coatings was determined according to GB/T9286-1998 test for marking test of paint films of paints and varnishes.
(3) Acid and alkali resistance: and (3) respectively measuring several drops of a concentrated sulfuric acid solution with the mass fraction of 98% and a concentrated sodium hydroxide solution with the mass fraction of 30% to the surface of the epoxy floor coating, wiping the epoxy floor coating by using a dry rag after contacting for 180min, and observing the surface change condition of the composite coating.
The test results of the epoxy floor coating films of examples 1 to 6 and comparative examples 1 to 4 are shown in table 1.
TABLE 1 test results of examples 1-6 and comparative examples 1-4
| Sample (I) | Hardness of | Adhesion force | Acid and alkali resistance |
| Example 1 | 6H | Level 0 | Is excellent in |
| Example 2 | 6H | Level 0 | Is excellent in |
| Example 3 | 3H | Stage 2 | Qualified |
| Example 4 | 4H | Level 1 | Qualified |
| Example 5 | 6H | Level 0 | Is excellent in |
| Example 6 | 5H | Level 1 | Is excellent in |
| Comparative example 1 | 1H | 4 stage | Fail to be qualified |
| Comparative example 2 | 1H | 4 stage | Fail to be qualified |
| Comparative example 3 | 2H | Stage 2 | Qualified |
| Comparative example 4 | 2H | Grade 3 | Qualified |
The test results in table 1 show that the epoxy floor coatings of embodiments 1 to 6 have hardness higher than 3H, adhesion force up to 0 level, and excellent acid and alkali resistance, and the epoxy floor coatings with excellent properties can be widely applied to cement floors in various fields. The difference between the comparative example 1 and the example 1 is that the porous carbon is not subjected to cast stone modification, and the dispersibility of the components is poor, so that the reinforcing effect of the epoxy resin-based composite material is poor, and the hardness, the adhesive force and the acid and alkali resistance of the epoxy floor coating film are poor. The difference between the comparative example 2 and the example 1 is that no coupling agent is added, so that agglomeration occurs among the components, and the dispersibility and compatibility of the inorganic porous carbon, cast stone and organic epoxy resin are poor, so that the epoxy resin-based composite material cannot improve the hardness, adhesion and acid and alkali resistance of the epoxy floor coating film. In the processes of preparing the epoxy resin-based composite materials in the comparative examples 3 and 4, the added chemical active agent, the cast stone, the modified cast stone/porous carbon composite material and the like are not in the weight ratio range, so that the epoxy resin-based composite material has poor performance, and the epoxy floor coating has low hardness and poor adhesion.
To sum up, the modified cast stone/porous carbon composite material provided by the application can obviously reduce the agglomeration of all components in the epoxy resin-based composite material under the synergistic effect of all components, increase the effective connection among all components, improve the compatibility and dispersibility of inorganic particles in an organic resin base material, enhance the comprehensive performance of the epoxy resin-based composite material, and further improve the hardness, adhesive force and acid and alkali resistance of the epoxy floor coating.
While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. The modified cast stone/porous carbon composite material is characterized by comprising the following components in parts by weight:
10 parts by weight of porous carbon;
2-10 parts of cast stone;
0.08-0.14 weight part of coupling agent.
2. The modified cast stone/porous carbon composite material according to claim 1, wherein the coupling agent is selected from one or more of gamma-methacryloxypropyltrimethoxysilane, gamma-methacryloxypropylmethyldimethoxysilane, and gamma-methacryloxypropyltriethoxysilane.
3. The modified cast stone/porous carbon composite material as claimed in claim 1, wherein the specific surface area of the porous carbon is 500-850 m2/g。
4. A process for preparing a modified cast stone/porous carbon composite material according to any one of claims 1 to 3, comprising:
carbonizing and activating: adding a chemical active agent into the biomass raw material in an inert atmosphere for carbonization and activation to obtain porous carbon;
and (3) stone casting compounding: and adding the cast stone into the porous carbon, adding the coupling agent and the organic solvent which are uniformly mixed, refluxing, centrifuging and drying to obtain the modified cast stone/porous carbon composite material.
5. The process of claim 4, wherein the biomass feedstock is selected from one or more of herbaceous plant stover.
6. The method of claim 4, wherein the chemical active agent comprises an alkaline active agent and/or a salt-based active agent;
the alkaline active agent is selected from one or more of sodium hydroxide, potassium hydroxide and calcium hydroxide;
the salt-type active agent is selected from one or more of sodium carbonate, potassium carbonate, calcium carbonate, zinc nitrate, calcium nitrate, sodium nitrate, zinc chloride, calcium chloride and magnesium chloride.
7. The method of claim 4, wherein the organic solvent is selected from one or more of methanol, ethanol, ethyl propanol, acetone, benzene, toluene, and xylene.
8. The method according to claim 4, wherein in the carbonization and activation step, the weight ratio of the biomass raw material to the chemical active agent is 1 (0.5-1.5); and/or the presence of a gas in the gas,
in the cast stone compounding step, the weight ratio of the cast stone to the porous carbon is (0.5-1): 1, and the weight ratio of the coupling agent to the organic solvent is (0.4-0.7): 100.
9. An epoxy resin-based composite material comprising the modified cast stone/porous carbon composite material according to any one of claims 1 to 3 or the modified cast stone/porous carbon composite material obtained by the method according to any one of claims 4 to 8.
10. An epoxy floor coating, characterized by comprising the modified cast stone/porous carbon composite material according to any one of claims 1 to 3 or the modified cast stone/porous carbon composite material prepared by the method according to any one of claims 4 to 8 or the epoxy resin-based composite material according to claim 9.
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