CN116835913A - Light high-strength soft stone brick and preparation method thereof - Google Patents
Light high-strength soft stone brick and preparation method thereof Download PDFInfo
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- CN116835913A CN116835913A CN202310816769.XA CN202310816769A CN116835913A CN 116835913 A CN116835913 A CN 116835913A CN 202310816769 A CN202310816769 A CN 202310816769A CN 116835913 A CN116835913 A CN 116835913A
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- soft stone
- stone brick
- epoxy
- light high
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- 239000004575 stone Substances 0.000 title claims abstract description 78
- 239000011449 brick Substances 0.000 title claims abstract description 72
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000004593 Epoxy Substances 0.000 claims abstract description 45
- 238000001035 drying Methods 0.000 claims abstract description 38
- 239000004744 fabric Substances 0.000 claims abstract description 35
- 239000004927 clay Substances 0.000 claims abstract description 33
- 239000002002 slurry Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000000839 emulsion Substances 0.000 claims abstract description 28
- 239000000178 monomer Substances 0.000 claims abstract description 25
- 229920000058 polyacrylate Polymers 0.000 claims abstract description 25
- 239000008367 deionised water Substances 0.000 claims abstract description 24
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 24
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 19
- 239000004743 Polypropylene Substances 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- -1 polypropylene Polymers 0.000 claims abstract description 16
- 229920001155 polypropylene Polymers 0.000 claims abstract description 16
- 239000003999 initiator Substances 0.000 claims abstract description 14
- 239000000835 fiber Substances 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims abstract description 13
- 239000004576 sand Substances 0.000 claims abstract description 13
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 13
- 238000006731 degradation reaction Methods 0.000 claims abstract description 12
- 230000015556 catabolic process Effects 0.000 claims abstract description 11
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 3
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 claims description 45
- 239000000243 solution Substances 0.000 claims description 39
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 26
- 239000007864 aqueous solution Substances 0.000 claims description 24
- 229960003638 dopamine Drugs 0.000 claims description 22
- 238000003756 stirring Methods 0.000 claims description 22
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims description 18
- 239000003822 epoxy resin Substances 0.000 claims description 16
- 229920000647 polyepoxide Polymers 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- KWVGIHKZDCUPEU-UHFFFAOYSA-N 2,2-dimethoxy-2-phenylacetophenone Chemical compound C=1C=CC=CC=1C(OC)(OC)C(=O)C1=CC=CC=C1 KWVGIHKZDCUPEU-UHFFFAOYSA-N 0.000 claims description 14
- 229920000858 Cyclodextrin Polymers 0.000 claims description 14
- 239000012265 solid product Substances 0.000 claims description 14
- 239000004094 surface-active agent Substances 0.000 claims description 14
- 229910052684 Cerium Inorganic materials 0.000 claims description 13
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 13
- 125000002541 furyl group Chemical group 0.000 claims description 13
- 238000005406 washing Methods 0.000 claims description 13
- MCTWTZJPVLRJOU-UHFFFAOYSA-N 1-methyl-1H-imidazole Chemical compound CN1C=CN=C1 MCTWTZJPVLRJOU-UHFFFAOYSA-N 0.000 claims description 12
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 12
- WFUGQJXVXHBTEM-UHFFFAOYSA-N 2-hydroperoxy-2-(2-hydroperoxybutan-2-ylperoxy)butane Chemical compound CCC(C)(OO)OOC(C)(CC)OO WFUGQJXVXHBTEM-UHFFFAOYSA-N 0.000 claims description 12
- 239000001116 FEMA 4028 Substances 0.000 claims description 12
- 239000002202 Polyethylene glycol Substances 0.000 claims description 12
- 229960004853 betadex Drugs 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 229920001223 polyethylene glycol Polymers 0.000 claims description 12
- 125000003396 thiol group Chemical class [H]S* 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 8
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 8
- 239000013530 defoamer Substances 0.000 claims description 8
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims description 8
- 238000005470 impregnation Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 8
- 239000006228 supernatant Substances 0.000 claims description 8
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 7
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims description 7
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 7
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 7
- 239000003085 diluting agent Substances 0.000 claims description 7
- 239000006185 dispersion Substances 0.000 claims description 7
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 7
- UTVVREMVDJTZAC-UHFFFAOYSA-N furan-2-amine Chemical compound NC1=CC=CO1 UTVVREMVDJTZAC-UHFFFAOYSA-N 0.000 claims description 6
- 230000001678 irradiating effect Effects 0.000 claims description 6
- 239000004289 sodium hydrogen sulphite Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 5
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 5
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 5
- 239000011837 N,N-methylenebisacrylamide Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- 238000004945 emulsification Methods 0.000 claims description 2
- 239000003444 phase transfer catalyst Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 229920002401 polyacrylamide Polymers 0.000 abstract description 9
- 238000011068 loading method Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 19
- 150000001412 amines Chemical class 0.000 description 9
- 230000008859 change Effects 0.000 description 8
- 238000004132 cross linking Methods 0.000 description 7
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 7
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 7
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 7
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 7
- 239000005543 nano-size silicon particle Substances 0.000 description 7
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 7
- 239000004721 Polyphenylene oxide Substances 0.000 description 6
- 230000003247 decreasing effect Effects 0.000 description 6
- 229920000570 polyether Polymers 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 5
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000007598 dipping method Methods 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 4
- 229920005596 polymer binder Polymers 0.000 description 4
- 239000002491 polymer binding agent Substances 0.000 description 4
- 229920002554 vinyl polymer Polymers 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 125000003700 epoxy group Chemical group 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- BANXPJUEBPWEOT-UHFFFAOYSA-N 2-methyl-Pentadecane Chemical compound CCCCCCCCCCCCCC(C)C BANXPJUEBPWEOT-UHFFFAOYSA-N 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 2
- SHFJWMWCIHQNCP-UHFFFAOYSA-M hydron;tetrabutylazanium;sulfate Chemical compound OS([O-])(=O)=O.CCCC[N+](CCCC)(CCCC)CCCC SHFJWMWCIHQNCP-UHFFFAOYSA-M 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 2
- 229940043268 2,2,4,4,6,8,8-heptamethylnonane Drugs 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241001521402 Maackia <angiosperm> Species 0.000 description 1
- 241000233805 Phoenix Species 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000004844 aliphatic epoxy resin Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000011175 beta-cyclodextrine Nutrition 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- KUVMKLCGXIYSNH-UHFFFAOYSA-N isopentadecane Natural products CCCCCCCCCCCCC(C)C KUVMKLCGXIYSNH-UHFFFAOYSA-N 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000000593 microemulsion method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/28—Polysaccharides or derivatives thereof
- C04B26/285—Cellulose or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention relates to the technical field of soft stone bricks, in particular to a light high-strength soft stone brick and a preparation method thereof. Step 1: sequentially carrying out surface loading polyacrylamide and Huffman degradation treatment on the polypropylene mesh cloth to obtain a pretreated mesh cloth; step 2: uniformly mixing sand, soft clay, nano scattering particles, silicon dioxide fibers, aqueous epoxy/polyacrylate emulsion, a cross-linking agent, an epoxy monomer, a curing agent, an initiator, a defoaming agent, deionized water and a water-retaining agent to obtain soft stone brick slurry; step 3: paving 1/2 amount of soft stone brick slurry in a mould, flattening, pressing into a pretreatment grid cloth, paving the rest 1/2 amount of soft stone brick slurry, flattening, carrying out ultraviolet irradiation, carrying out heat drying at 75-85 ℃ for 0.5-1 hour, carrying out heat drying at 95-105 ℃ for 0.5-1 hour, and carrying out heat drying at 110-120 ℃ for 0.5-1 hour; and demolding to obtain the light high-strength soft stone brick.
Description
Technical Field
The invention relates to the technical field of soft stone bricks, in particular to a light high-strength soft stone brick and a preparation method thereof.
Background
Soft stone brick is an ecological building material. The device has light weight and environmental protection, and reduces the risk of smashing and damaging high-altitude heavy objects; the special-shaped building adhesive has certain flexibility and is suitable for the lamination of special-shaped buildings; the construction convenience is realized, the construction period is shorter than that of the traditional materials, and the construction cost is effectively saved; in addition, the fabric has the advantages of rich texture, convenience in transportation and the like; the method is widely applied to engineering requirements of high-rise building exterior finishing engineering, city modified exterior wall surface materials, heat preservation system finishing layers, arc walls, arc columns and other special-shaped building finishing engineering.
In the prior art, single cement is commonly used as a binder in raw materials of soft stone bricks, but severe alkali efflorescence phenomenon exists, and cracking, pulverization and other phenomena are caused. Therefore, polymer binders are used in the current research to replace the traditional binders, and the polymer binders are commonly acrylic emulsion, epoxy resin, aqueous polyurethane and the like; in the prior art, the soft stone brick using the aqueous polyurethane as the binder has good flexibility, but has lower tensile strength, low surface hardness, easy scratch and low overall strength. The acrylic emulsion and the epoxy resin have good scratch resistance as the adhesive; however, single aqueous acrylic emulsion has the phenomenon of hot sticking and cold brittleness, and has poor temperature resistance; the single epoxy resin has good temperature resistance, but has solidification brittleness and lower toughness. In addition, the compatibility of the epoxy resin, the acrylic emulsion and the inorganic material is poor, the problem of curing cracking of the soft stone brick is further aggravated, and the soft stone brick has lower strength and poor corrosion resistance.
In conclusion, the problems are solved, and the preparation of the light-weight high-strength soft stone brick has important application value.
Disclosure of Invention
The invention aims to provide a light high-strength soft stone brick and a preparation method thereof, which are used for solving the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
a preparation method of a light high-strength soft stone brick comprises the following steps:
step 1: (1) At room temperature, arranging a polypropylene grid in an acrylamide solution, avoiding light, setting the impregnation ratio to be 1 (1-2), oscillating and impregnating for 24-48 hours, taking out, irradiating for 1-2 minutes under an ultraviolet lamp, washing and drying to obtain a modified grid cloth; (2) -arranging the modified grid in Huffman degradation solution at 5-0 ℃, setting the impregnation ratio to be 1 (2-3), oscillating for 8-12 hours, washing and drying to obtain pretreated grid cloth;
step 2: uniformly mixing sand, soft clay, nano scattering particles, silicon dioxide fibers, aqueous epoxy/polyacrylate emulsion, a cross-linking agent, an epoxy monomer, a curing agent, an initiator, a defoaming agent, deionized water and a water-retaining agent to obtain soft stone brick slurry;
step 3: paving 1/2 amount of soft stone brick slurry in a mould, flattening, pressing into a pretreatment grid cloth, paving the rest 1/2 amount of soft stone brick slurry, flattening, carrying out ultraviolet irradiation, carrying out heat drying at 75-85 ℃ for 0.5-1 hour, carrying out heat drying at 95-105 ℃ for 0.5-1 hour, and carrying out heat drying at 110-120 ℃ for 0.5-1 hour; and demolding to obtain the light high-strength soft stone brick.
Further, the preparation method of the acrylamide solution comprises the following steps: sequentially adding acrylamide, N-methylene bisacrylamide, a photoinitiator, a surfactant and dopamine polyethylene glycol mercapto into deionized water, uniformly stirring, and adjusting the pH to 7.8-8.5; adding dopamine, and uniformly stirring to obtain an acrylamide solution;
the raw materials of the acrylamide solution comprise the following substances: 15 to 25 parts of acrylamide, 1.2 to 2 parts of N, N-methylene bisacrylamide, 1 to 1.5 parts of photoinitiator, 1 to 1.5 parts of surfactant, 15 to 20 parts of dopamine polyethylene glycol mercapto, 120 to 200 parts of deionized water and 1 to 2 parts of dopamine.
Further, the Huffman degradation solution comprises sodium hypochlorite solution and potassium hydroxide solution with the mass ratio of 1:1; wherein the concentration of the sodium hypochlorite solution is 1.5-1.8 mol/L, and the concentration of the potassium hydroxide solution is 4-4.5 mol/L.
Further, the raw materials of the soft stone tile slurry comprise the following substances: 40-48 parts of sand, 25-30 parts of soft clay, 5-7 parts of nano scattering particles, 3-5 parts of silicon dioxide fiber, 15-20 parts of water-based epoxy/polyacrylate emulsion, 3-4 parts of cross-linking agent, 2-3 parts of epoxy monomer, 3-4 parts of curing agent, 0.5-1 part of initiator, 8-10 parts of deionized water, 1-3 parts of water-retaining agent and 0.5-1 part of defoamer.
Further, the preparation method of the aqueous epoxy/polyacrylate emulsion comprises the following steps: adding epoxy resin into a mixture containing butyl acrylate, methyl methacrylate, acrylic acid, glycidyl methacrylate, 3- (methacryloyloxy) propyl trimethoxysilane and isoparaffin, and homogenizing to obtain an oil phase mixture; adding a surfactant aqueous solution, and performing coarse emulsification; and (3) heating to 55-60 ℃ in a nitrogen atmosphere, dropwise adding a potassium persulfate aqueous solution and a sodium bisulfite aqueous solution for 1.5-2 hours, performing polymerization for 5-6 hours, and cooling to obtain the water-based epoxy/polyacrylate emulsion.
Further, the raw materials of the aqueous epoxy/polyacrylate emulsion comprise the following substances: according to the weight portion, 20 to 30 portions of epoxy resin, 38 to 42 portions of butyl acrylate, 68 to 75 portions of methyl methacrylate, 5 to 10 portions of acrylic acid, 5 to 10 portions of glycidyl methacrylate, 12 to 15 portions of 3- (methacryloyloxy) propyl trimethoxy silane, 0.5 to 1 portion of isoparaffin, 120 to 150 portions of surfactant aqueous solution, 35 to 40 portions of potassium persulfate aqueous solution and 35 to 40 portions of sodium bisulphite aqueous solution; wherein the concentration of the surfactant aqueous solution is 2wt%, and the concentration of the potassium persulfate aqueous solution and the sodium bisulphite aqueous solution is 5wt%.
Further, the soft clay is pretreated by the following steps: dissolving cerium nitrate in deionized water, adding soft clay, stirring for dispersion, and centrifuging; stirring and dispersing the solid product in the diluent of the supernatant for the second time, and centrifugally separating; after multiple operations, drying the solid product to obtain cerium doped clay; wherein the mass ratio of cerium nitrate to soft clay is (1-1.5): 5.
Further, the cross-linking agent is sulfhydryl-beta-cyclodextrin; the epoxy monomer is a furyl epoxy monomer; the initiator comprises 2, 2-dimethoxy-2-phenyl acetophenone, 1-methylimidazole and methyl ethyl ketone peroxide with the mass ratio of (0.2-0.4) (0.15-0.3).
Further, the preparation method of the furyl epoxy monomer comprises the following steps: adding epichlorohydrin into a reaction system, adding a sodium hydroxide solution and a phase transfer catalyst, stirring at room temperature, adding furan amine, reacting for 20-24 hours at 50-55 ℃, extracting and washing to obtain a furyl epoxy monomer; wherein the mass ratio of the epichlorohydrin to the furan amine is (6-6.5): 1.
Further, the light high-strength soft stone brick is prepared by the preparation method of the light high-strength soft stone brick.
Compared with the prior art, the invention has the following beneficial effects:
(1) In the scheme, the polypropylene mesh cloth is arranged in the middle of the soft stone brick to serve as a middle reinforcing layer, so that the overall mechanical strength of the soft stone brick is effectively improved, meanwhile, the polyacrylamide is loaded on the surface of the polypropylene mesh cloth in situ, and the polyacrylamide is subjected to Huffman degradation to obtain the polyvinyl amine, so that the interface effect of the polypropylene mesh cloth and soft stone brick slurry is effectively enhanced, and the mechanical strength, toughness and impact resistance are effectively improved.
In the process of loading the polyacrylamide in situ, dopamine polyethylene glycol sulfhydryl is introduced into the acrylamide solution, so that the solution viscosity is effectively ensured, the in-situ loading of the polyacrylamide is facilitated, and meanwhile, the introduction of the dopamine can assist the subsequent introduction of the dopamine to promote the firmness of the polyacrylamide on the polypropylene mesh cloth. The hybrid structure of dopamine can form cation-p interaction or p-p accumulation with the contact surface of the polypropylene mesh cloth, so that the adhesive strength of the polyacrylamide is effectively improved. On the other hand, the coating adhered to the surface of the soft stone brick effectively enhances the elastic modulus of the surface due to the introduction of the dopamine polyethylene glycol mercapto and the dopamine, thereby enhancing the toughness of the interface action of the pretreatment gridding cloth and the soft stone brick slurry, effectively enhancing the tensile strength of the soft stone brick and simultaneously enhancing the toughness and the shock resistance.
In the scheme, the Hofmann degradation reaction is utilized to degrade the polyacrylamide loaded in situ to form the polyvinyl amine, so that the abundance of surface vinyl and amino is increased, the polyvinyl amine is further reacted and crosslinked with the polymer in the soft stone tile slurry, the interface effect is effectively improved, and the overall strength is improved.
(2) In the scheme, the polymer binder is used in the soft stone tile slurry, so that the phenomenon of whiskering is effectively inhibited. The polymer binder uses an aqueous epoxy/polyacrylate emulsion, the incorporation of which can produce two networks of epoxy resin and polyacrylate, the interpenetrating or entangled between the two networks forming a "forced compatibility" such that: the modification of the epoxy resin effectively improves the mechanical strength and the temperature resistance of the acrylic polymer, and the acrylic polymer effectively improves the brittleness of the epoxy resin, and improves the toughness and the impact resistance while improving the mechanical strength.
Wherein the aqueous epoxy/polyacrylate emulsion is composite emulsion prepared by a microemulsion method, in the scheme, epoxy resin is dispersed in acrylic acid monomer, and is coarsely emulsified by means of surfactant, and then copolymerized; in the process, the hydrogen atoms on the aliphatic epoxy resin can generate partial free radicals so as to be grafted and polymerized in the main chain of the polyacrylate, and the surfactant and the isoparaffin are introduced in the scheme, so that the agglomeration among particles is effectively inhibited in a synergistic way, and the stability of the mixed emulsion is effectively improved. Meanwhile, branched chain broken glycidyl methacrylate is introduced into the polyacrylic emulsion, so that the similar affinity with epoxy resin is effectively improved; the branched chain 3- (methacryloyloxy) propyl trimethoxy silane is introduced, so that the compatibility with inorganic materials is effectively enhanced.
In addition, nanometer scattering particles and silicon dioxide fibers are introduced into the soft stone brick slurry, so that the slurry strength is improved, and meanwhile, the Rayleigh scattering effect is generated, and ultraviolet crosslinking is effectively promoted. The cross-linking agent sulfhydryl-beta-cyclodextrin is introduced, and the cavity of the macromolecular cyclodextrin can be used as a stress dissipation point to realize toughening, and meanwhile, the sulfhydryl contained in the macromolecular cyclodextrin can be cross-linked with unsaturated groups and epoxy groups to be used as a cross-linking center, so that an interpenetrating structure can be effectively generated.
In addition, in the soft stone tile slurry, the initiator is 2, 2-dimethoxy-2-phenyl acetophenone, 1-methylimidazole or methyl ethyl ketone peroxide, wherein the 2, 2-dimethoxy-2-phenyl acetophenone initiates photo-crosslinking; and 1-methylimidazole can be used as a base catalyst to thermally crosslink mercapto groups and epoxy groups, and is used as a curing accelerator to crosslink epoxy resin; whereas methyl ethyl ketone peroxide can cause thermal crosslinking between unsaturated groups. The three crosslinking means utilize the difference of curing crosslinking modes and the difference of temperature and activity, thereby effectively reducing the curing stress, inhibiting the curing cracking, increasing the toughness and effectively improving the strength and the shock resistance of the soft stone brick.
(3) In the scheme, cerium is used for modifying the soft clay, so that the corrosion resistance is effectively improved. Meanwhile, the use of an epoxy monomer containing a furyl group further improves corrosion resistance. Meanwhile, the epoxy monomer is an epoxy monomer containing two epoxy groups, and can cooperate with mercapto-beta-cyclodextrin to effectively improve the interpenetrating of a network and the crosslinking density and the interpenetrating. Thereby improving the strength, the impact strength and the corrosion resistance.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the following examples, it should be noted that the manufacturers of all the raw materials according to the present invention include, without any particular limitation: the gram weight of the polypropylene mesh cloth is 75g/m 2 Silk screen from Anping county available from products limited; the soft clay has a cargo number of SD-BTU371469, supplied by the Ming's mineral processing plant, minn county; the sand is colored sand with the grain diameter of 40-120 meshes; the average grain diameter of the nano silicon dioxide is 50nm, the nano titanium dioxide is anatase type, and the average grain diameter is 100nm; the specification of the silica fiber is as follows:l=3 mm; the CAS number for thiol-beta-cyclodextrin is 16-661-60-9, provided by the Maackia reagent. The CAS number of the 2, 2-dimethoxy-2-phenylacetophenone is 24650-42-8, the CAS number of the 1-methylimidazole is 616-47-7, and the CAS number of the methyl ethyl ketone peroxide is 1338-23-4; acrylamide has CAS number of 79-06-1, N-methylenebisacrylamide has CAS number of 110-26-9, dopamine polyethylene glycol mercapto group has product number of 80030817, average molecular weight of 3400, and is prepared from Guangzhou carbohydrateTechnical company, inc.; the CAS number of the dopamine is 51-61-6; the CAS number of the epichlorohydrin is 106-89-8, and the CAS number of the furan amine is 617-89-0; hydroxypropyl methylcellulose has a CAS number of 9004-65-3, epoxy resin E51 of model number phoenix brand WSR618, butyl acrylate has a CAS number of 141-32-2, methyl methacrylate has a CAS number of 80-62-6, acrylic acid has a CAS number of 79-10-7, glycidyl methacrylate has a CAS number of 106-91-2, 3- (methacryloyloxy) propyltrimethoxysilane has a CAS number of 2530-85-0, and isoparaffin purity of 98%, provided by Hubei Xin Ming Tai Chemicals Co. The following parts are mass parts, 1 part is 10g.
Material preparation in examples 1 to 3: (1) preparation of acrylamide solution: sequentially adding 20 parts of acrylamide, 1.6 parts of N, N-methylene bisacrylamide, 1 part of 2, 2-dimethoxy-2-phenylacetophenone, 1.2 parts of sodium dodecyl benzene sulfonate and 18 parts of dopamine polyethylene glycol mercapto into 150 parts of deionized water, uniformly stirring, and dropwise adding a 20wt% sodium hydroxide solution to adjust the pH=8.2; adding 1.5 parts of dopamine, and uniformly stirring to obtain an acrylamide solution;
(2) Preparation of Huffman degradation solution: the sodium hypochlorite solution with the concentration of 1.6mol/L and the potassium hydroxide solution with the concentration of 4.2mol/L are mixed according to the mass ratio of 1:1, uniformly mixing to obtain a Huffman degradation solution;
(3) Preparation of aqueous epoxy/polyacrylate emulsion: adding 25 parts of epoxy resin to a mixture containing 40 parts of butyl acrylate, 70 parts of methyl methacrylate, 6 parts of acrylic acid, 8 parts of glycidyl methacrylate, 14 parts of 3- (methacryloyloxy) propyl trimethoxysilane and 0.6 part of isohexadecane, homogenizing to obtain an oil phase mixture; 140 parts of surfactant PS-630 aqueous solution is added, and stirred and emulsified for 1 hour; under the nitrogen atmosphere, heating to 55 ℃, dropwise adding 35 parts of potassium persulfate aqueous solution and 35 parts of sodium bisulphite aqueous solution for 2 hours, carrying out polymerization for 5 hours, and cooling to obtain the waterborne epoxy/polyacrylate emulsion; wherein the concentration of the surfactant PS-630 aqueous solution is 2wt%, and the concentration of the potassium persulfate aqueous solution and the sodium bisulphite aqueous solution is 5wt%;
(4) Preparation of furanyl epoxy monomer: 6.2 parts of epichlorohydrin is added into a reaction kettle, 2.2 parts of 50wt% sodium hydroxide solution and 0.3 part of tetrabutylammonium bisulfate are added, the mixture is stirred for 30 minutes at room temperature, 1 part of furan amine is added, the reaction is carried out for 24 hours at 50 ℃, and the furan-based epoxy monomer is obtained through extraction and washing.
Example 1: a preparation method of a light high-strength soft stone brick comprises the following steps:
step 1: (1) Arranging a polypropylene grid in an acrylamide solution at room temperature, keeping away from light, setting the impregnation ratio to be 1:1.5, oscillating and impregnating for 36 hours, taking out, placing under an ultraviolet lamp, irradiating for 90 seconds under the conditions of 365nm wavelength and 250W power, washing and drying to obtain modified grid cloth; (2) Arranging the modified grid in Huffman degradation solution at the temperature of 5 ℃ below zero, setting the impregnation ratio to be 1:3, carrying out oscillating treatment for 12 hours, washing and drying to obtain pretreated grid cloth;
step 2: (1) Dissolving 6 parts of cerium nitrate into 100 parts of deionized water, adding 28 parts of soft clay, stirring for dispersion, and centrifuging; stirring and dispersing the solid product in the diluent of the supernatant for the second time, and centrifugally separating; after 3 times of circulation operation, drying the solid product to obtain cerium doped clay;
(2) Uniformly mixing cerium doped clay, 45 parts of color sand, 6 parts of nano scattering particles (2 parts of nano silicon dioxide and 4 parts of nano titanium dioxide), 4 parts of silicon dioxide fibers, 18 parts of aqueous epoxy/polyacrylate emulsion, 3.5 parts of sulfhydryl-beta-cyclodextrin, 2.5 parts of furyl epoxy monomer, 3 parts of curing agent polyether amine D-230, 0.6 part of initiator (0.3 part of 2, 2-dimethoxy-2-phenyl acetophenone, 0.15 part of 1-methylimidazole and 0.15 part of methyl ethyl ketone peroxide), 0.5 part of defoamer Pick-012, 8-10 parts of deionized water and 1 part of hydroxypropyl methyl cellulose to obtain soft stone brick slurry;
step 3: paving 1/2 amount of soft stone brick slurry in a mould (150 mm multiplied by 150 mm), flattening, pressing into a pretreatment grid cloth (the distance between the periphery of the pretreatment grid cloth and the periphery of the mould is 15 mm), paving the rest 1/2 amount of soft stone brick slurry, flattening, carrying out ultraviolet irradiation, carrying out heat drying at 80 ℃ for 0.5 hour, carrying out heat drying at 100 ℃ for 0.5 hour, and carrying out heat drying at 115 ℃ for 1 hour; and demolding to obtain the light high-strength soft stone brick.
Example 2: a preparation method of a light high-strength soft stone brick comprises the following steps:
step 1: (1) Arranging a polypropylene grid in an acrylamide solution at room temperature, avoiding light, setting the dipping ratio to be 1:1, oscillating and dipping for 36 hours, taking out, placing under an ultraviolet lamp, irradiating for 90 seconds under the conditions of 365nm wavelength and 250W power, washing and drying to obtain modified grid cloth; (2) Arranging the modified grid in Huffman degradation solution at the temperature of 5 ℃ below zero, setting the impregnation ratio to be 1:2, carrying out oscillating treatment for 12 hours, washing and drying to obtain pretreated grid cloth;
step 2: (1) Dissolving 5 parts of cerium nitrate into 100 parts of deionized water, adding 25 parts of soft clay, stirring for dispersion, and centrifuging; stirring and dispersing the solid product in the diluent of the supernatant for the second time, and centrifugally separating; after 3 times of circulation operation, drying the solid product to obtain cerium doped clay;
(2) Cerium doped clay, 48 parts of color sand, 6 parts of nano scattering particles (2 parts of nano silicon dioxide and 4 parts of nano titanium dioxide), 4 parts of silicon dioxide fiber, 20 parts of aqueous epoxy/polyacrylate emulsion, 4 parts of sulfhydryl-beta-cyclodextrin, 2 parts of furyl epoxy monomer, 3 parts of curing agent polyether amine D-230, 0.6 part of initiator (0.3 part of 2, 2-dimethoxy-2-phenylacetophenone, 0.15 part of 1-methylimidazole and 0.15 part of methyl ethyl ketone peroxide), 0.5 part of defoamer Pick-012, 8-10 parts of deionized water and 1 part of hydroxypropyl methyl cellulose are uniformly mixed to obtain soft stone brick slurry;
step 3: paving 1/2 amount of soft stone brick slurry in a mould (150 mm multiplied by 150 mm), flattening, pressing into a pretreatment grid cloth (the distance between the periphery of the pretreatment grid cloth and the periphery of the mould is 15 mm), paving the rest 1/2 amount of soft stone brick slurry, flattening, carrying out ultraviolet irradiation, carrying out heat drying at 80 ℃ for 0.5 hour, carrying out heat drying at 100 ℃ for 0.5 hour, and carrying out heat drying at 115 ℃ for 1 hour; and demolding to obtain the light high-strength soft stone brick.
Example 3: a preparation method of a light high-strength soft stone brick comprises the following steps:
step 1: (1) Arranging a polypropylene grid in an acrylamide solution at room temperature, avoiding light, setting the dipping ratio to be 1:2, oscillating and dipping for 36 hours, taking out, placing under an ultraviolet lamp, irradiating for 90 seconds under the conditions of 365nm wavelength and 250W power, washing and drying to obtain modified grid cloth; (2) Arranging the modified grid in Huffman degradation solution at the temperature of 5 ℃ below zero, setting the impregnation ratio to be 1:3, carrying out oscillating treatment for 12 hours, washing and drying to obtain pretreated grid cloth;
step 2: (1) Dissolving 6 parts of cerium nitrate into 100 parts of deionized water, adding 30 parts of soft clay, stirring for dispersion, and centrifuging; stirring and dispersing the solid product in the diluent of the supernatant for the second time, and centrifugally separating; after 3 times of circulation operation, drying the solid product to obtain cerium doped clay;
(2) Uniformly mixing cerium doped clay, 40 parts of color sand, 6 parts of nano scattering particles (2 parts of nano silicon dioxide and 4 parts of nano titanium dioxide), 4 parts of silicon dioxide fiber, 15 parts of aqueous epoxy/polyacrylate emulsion, 3 parts of sulfhydryl-beta-cyclodextrin, 3 parts of furyl epoxy monomer, 4 parts of curing agent polyether amine D-230, 0.6 part of initiator (0.3 part of 2, 2-dimethoxy-2-phenylacetophenone, 0.15 part of 1-methylimidazole and 0.15 part of methyl ethyl ketone peroxide), 0.5 part of defoamer Pick-012, 8-10 parts of deionized water and 1 part of hydroxypropyl methyl cellulose to obtain soft stone brick slurry;
step 3: paving 1/2 amount of soft stone brick slurry in a mould (150 mm multiplied by 150 mm), flattening, pressing into a pretreatment grid cloth (the distance between the periphery of the pretreatment grid cloth and the periphery of the mould is 15 mm), paving the rest 1/2 amount of soft stone brick slurry, flattening, carrying out ultraviolet irradiation, carrying out heat drying at 80 ℃ for 0.5 hour, carrying out heat drying at 100 ℃ for 0.5 hour, and carrying out heat drying at 115 ℃ for 1 hour; and demolding to obtain the light high-strength soft stone brick.
Comparative example 1: taking the example 1 as a control group, no pretreatment mesh cloth is arranged, and the rest are normal; the specific changes are as follows:
step 3: paving soft stone brick slurry in a mould, flattening, irradiating with ultraviolet light, and baking at 80 ℃ for 0.5 hours, at 100 ℃ for 0.5 hours, and at 115 ℃ for 1 hour; and demolding to obtain the light high-strength soft stone brick.
Comparative example 2: taking example 1 as a control group, directly setting a polypropylene mesh cloth, and keeping the rest normal; the specific changes are as follows:
step 3: paving 1/2 amount of soft stone brick slurry in a mould (150 mm multiplied by 150 mm), flattening, pressing into polypropylene mesh cloth (the distance between the periphery of the polypropylene mesh cloth and the periphery of the mould is 15 mm), paving the rest 1/2 amount of soft stone brick slurry, flattening, carrying out ultraviolet irradiation, carrying out heat drying at 80 ℃ for 0.5 hour, carrying out heat drying at 100 ℃ for 0.5 hour, and carrying out heat drying at 115 ℃ for 1 hour; and demolding to obtain the light high-strength soft stone brick.
Comparative example 3: in the acrylamide solution, the mercapto group of the dopamine polyethylene glycol is replaced by polyethylene glycol with the average molecular weight of 4000 by taking the example 1 as a control group, and no dopamine is introduced; the rest are normal; the specific changes are as follows:
preparation of acrylamide solution: 20 parts of acrylamide, 1.6 parts of N, N-methylene bisacrylamide, 1 part of 2, 2-dimethoxy-2-phenylacetophenone, 1.2 parts of sodium dodecyl benzene sulfonate and 18 parts of polyethylene glycol are sequentially added into 150 parts of deionized water, uniformly stirred, and 20wt% of sodium hydroxide solution is dropwise added to regulate pH=8.2, so as to obtain an acrylamide solution.
Comparative example 4: taking example 1 as a control group, no mercapto-beta-cyclodextrin is introduced, and the rest are normal; the specific changes are as follows:
step 2: (1) Dissolving 6 parts of cerium nitrate into 100 parts of deionized water, adding 28 parts of soft clay, stirring for dispersion, and centrifuging; stirring and dispersing the solid product in the diluent of the supernatant for the second time, and centrifugally separating; after 3 times of circulation operation, drying the solid product to obtain cerium doped clay;
(2) Cerium doped clay, 45 parts of color sand, 6 parts of nano scattering particles (2 parts of nano silicon dioxide and 4 parts of nano titanium dioxide), 4 parts of silicon dioxide fibers, 18 parts of aqueous epoxy/polyacrylate emulsion, 2.5 parts of furan-based epoxy monomer, 3 parts of curing agent polyether amine D-230, 0.6 part of initiator (0.3 part of 2, 2-dimethoxy-2-phenyl acetophenone, 0.15 part of 1-methylimidazole, 0.15 part of methyl ethyl ketone peroxide), 0.5 part of defoamer Pick BYK-012, 8-10 parts of deionized water and 1 part of hydroxypropyl methyl cellulose are uniformly mixed to obtain soft stone brick slurry.
Comparative example 5: taking example 1 as a control group, no furyl epoxy monomer is introduced, and the rest are normal; the specific changes are as follows:
step 2: (1) Dissolving 6 parts of cerium nitrate into 100 parts of deionized water, adding 28 parts of soft clay, stirring for dispersion, and centrifuging; stirring and dispersing the solid product in the diluent of the supernatant for the second time, and centrifugally separating; after 3 times of circulation operation, drying the solid product to obtain cerium doped clay;
(2) Cerium doped clay, 45 parts of color sand, 6 parts of nano scattering particles (2 parts of nano silicon dioxide and 4 parts of nano titanium dioxide), 4 parts of silicon dioxide fiber, 18 parts of aqueous epoxy/polyacrylate emulsion, 3.5 parts of sulfhydryl-beta-cyclodextrin, 3 parts of curing agent polyether amine D-230, 0.6 part of initiator (0.3 part of 2, 2-dimethoxy-2-phenyl acetophenone, 0.15 part of 1-methylimidazole, 0.15 part of methyl ethyl ketone peroxide), 0.5 part of defoamer Pick BYK-012, 8-10 parts of deionized water and 1 part of hydroxypropyl methyl cellulose are uniformly mixed to obtain the soft stone brick slurry.
Comparative example 6: taking example 1 as a control group, the soft clay is not modified, and the rest are normal; the specific changes are as follows:
step 2: 28 parts of soft clay, 45 parts of color sand, 6 parts of nano scattering particles (2 parts of nano silicon dioxide and 4 parts of nano titanium dioxide), 4 parts of silicon dioxide fiber, 18 parts of aqueous epoxy/polyacrylate emulsion, 3.5 parts of sulfhydryl-beta-cyclodextrin, 3 parts of curing agent polyether amine D-230, 0.6 part of initiator (0.3 part of 2, 2-dimethoxy-2-phenyl acetophenone, 0.15 part of 1-methylimidazole and 0.15 part of methyl ethyl ketone peroxide), 0.5 part of defoamer Pick BYK-012, 8-10 parts of deionized water and 1 part of hydroxypropyl methyl cellulose are uniformly mixed to obtain soft stone brick slurry.
Experiment 1: performing a correlation performance test on the light high-strength soft stone bricks prepared in the examples and the comparative examples; tensile strength was measured using a BY-121A universal tester at a rate of 1 mm/min. Referring to JG/T311-2011, the front surface of the test piece is tightly clung to a cylinder with a certain diameter outwards to be slowly bent, and whether the test piece has cracks or not is observed to determine the bending radius. With reference to the specification of GB/T9265-2009, alkali resistance test was carried out at 25 ℃, excessive calcium hydroxide was added to three-stage water according to the specification of GB/T662, the mixture was left for 24 hours after sufficient dissolution, the supernatant was taken as an alkaline solution, and sample 2/3 was immersed in an alkaline solution for 48 hours, and the surface state was evaluated according to GB/T1766. The data obtained are shown below:
| sample preparation | Tensile strength Mpa | Radius of curvature mm | Surface state |
| Example 1 | 1.53 | 380 | With slight colour change on the surface |
| Example 2 | 1.48 | 360 | With slight colour change on the surface |
| Example 3 | 1.45 | 340 | With slight colour change on the surface |
| Comparative example 1 | 1.18 | 280 | With slight colour change on the surface |
| Comparative example 2 | 1.23 | 260 | With slight colour change on the surface |
| Comparative example 3 | 1.34 | 320 | With slight colour change on the surface |
| Comparative example 4 | 1.36 | 300 | With obvious colour change on the surface |
| Comparative example 5 | 1.40 | 320 | With obvious colour change on the surface |
| Comparative example 6 | 1.42 | 340 | The surface is cracked |
Conclusion: according to the embodiment, the light soft stone brick prepared in the scheme effectively enhances the tensile strength on the basis of ensuring excellent flexibility, the tensile strength is greater than 1.4Mpa, and the optimal scheme of the embodiment 1 can reach 1.53Mpa. Meanwhile, the light soft stone brick has excellent alkali resistance. Comparing the data of comparative examples 1 to 6 with example 1, it can be found that: in the scheme, the pretreatment gridding cloth is not arranged in the comparative example 1, so that the overall strength is obviously reduced; in comparative example 2, the polypropylene mesh cloth was directly provided, and the performance was also linearly decreased due to poor unmodified interface performance; in comparative example 3, however, the amount of the surface polyacrylamide is reduced because the dopamine polyethylene glycol mercapto group and the dopamine are not provided in the acrylamide solution, so that the interface effect is reduced, and the performance is reduced. In comparative examples 4 to 5, since mercapto- β -cyclodextrin and furyl epoxy monomers were not introduced, the degree of non-crosslinking was decreased, the overall interpenetrating was decreased, the strength and toughness were decreased, the compactibility was also decreased, and the alkali resistance was decreased. In comparative example 6, since the soft clay was not aligned, the ionic bonding was reduced, so that the overall strength was lowered, and the alkali resistance was lowered.
It should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A preparation method of a light high-strength soft stone brick is characterized in that: the method comprises the following steps:
step 1: (1) At room temperature, arranging a polypropylene grid in an acrylamide solution, avoiding light, setting the impregnation ratio to be 1 (1-2), oscillating and impregnating for 24-48 hours, taking out, irradiating for 1-2 minutes under an ultraviolet lamp, washing and drying to obtain a modified grid cloth; (2) Arranging the modified grid in Huffman degradation solution at the temperature of 5-0 ℃ below zero, setting the impregnation ratio to be 1 (2-3), oscillating for 8-12 hours, washing and drying to obtain pretreated grid cloth;
step 2: uniformly mixing sand, soft clay, nano scattering particles, silicon dioxide fibers, aqueous epoxy/polyacrylate emulsion, a cross-linking agent, an epoxy monomer, a curing agent, an initiator, a defoaming agent, deionized water and a water-retaining agent to obtain soft stone brick slurry;
step 3: paving 1/2 amount of soft stone brick slurry in a mould, flattening, pressing into a pretreatment grid cloth, paving the rest 1/2 amount of soft stone brick slurry, flattening, carrying out ultraviolet irradiation, carrying out heat drying at 75-85 ℃ for 0.5-1 hour, carrying out heat drying at 95-105 ℃ for 0.5-1 hour, and carrying out heat drying at 110-120 ℃ for 0.5-1 hour; and demolding to obtain the light high-strength soft stone brick.
2. The method for preparing the light high-strength soft stone brick according to claim 1, which is characterized in that: the preparation method of the acrylamide solution comprises the following steps: sequentially adding acrylamide, N-methylene bisacrylamide, a photoinitiator, a surfactant and dopamine polyethylene glycol mercapto into deionized water, uniformly stirring, and adjusting the pH to 7.8-8.5; adding dopamine, and uniformly stirring to obtain an acrylamide solution;
the raw materials of the acrylamide solution comprise the following substances: 15 to 25 parts of acrylamide, 1.2 to 2 parts of N, N-methylene bisacrylamide, 1 to 1.5 parts of photoinitiator, 1 to 1.5 parts of surfactant, 15 to 20 parts of dopamine polyethylene glycol mercapto, 120 to 200 parts of deionized water and 1 to 2 parts of dopamine.
3. The method for preparing the light high-strength soft stone brick according to claim 1, which is characterized in that: the Huffman degradation solution comprises sodium hypochlorite solution and potassium hydroxide solution with the mass ratio of 1:1; wherein the concentration of the sodium hypochlorite solution is 1.5-1.8 mol/L, and the concentration of the potassium hydroxide solution is 4-4.5 mol/L.
4. The method for preparing the light high-strength soft stone brick according to claim 1, which is characterized in that: the raw materials of the soft stone brick slurry comprise the following substances: 40-48 parts of sand, 25-30 parts of soft clay, 5-7 parts of nano scattering particles, 3-5 parts of silicon dioxide fiber, 15-20 parts of water-based epoxy/polyacrylate emulsion, 3-4 parts of cross-linking agent, 2-3 parts of epoxy monomer, 3-4 parts of curing agent, 0.5-1 part of initiator, 8-10 parts of deionized water, 1-3 parts of water-retaining agent and 0.5-1 part of defoamer.
5. The method for preparing the light high-strength soft stone brick according to claim 1, which is characterized in that: the preparation method of the aqueous epoxy/polyacrylate emulsion comprises the following steps: adding epoxy resin into a mixture containing butyl acrylate, methyl methacrylate, acrylic acid, glycidyl methacrylate, 3- (methacryloyloxy) propyl trimethoxysilane and isoparaffin, and homogenizing to obtain an oil phase mixture; adding a surfactant aqueous solution, and performing coarse emulsification; and (3) heating to 55-60 ℃ in a nitrogen atmosphere, dropwise adding a potassium persulfate aqueous solution and a sodium bisulfite aqueous solution for 1.5-2 hours, performing polymerization for 5-6 hours, and cooling to obtain the water-based epoxy/polyacrylate emulsion.
6. The method for preparing the light high-strength soft stone brick according to claim 5, which is characterized in that: the raw materials of the aqueous epoxy/polyacrylate emulsion comprise the following substances: according to the weight portion, 20 to 30 portions of epoxy resin, 38 to 42 portions of butyl acrylate, 68 to 75 portions of methyl methacrylate, 5 to 10 portions of acrylic acid, 5 to 10 portions of glycidyl methacrylate, 12 to 15 portions of 3- (methacryloyloxy) propyl trimethoxy silane, 0.5 to 1 portion of isoparaffin, 120 to 150 portions of surfactant aqueous solution, 35 to 40 portions of potassium persulfate aqueous solution and 35 to 40 portions of sodium bisulphite aqueous solution; wherein the concentration of the surfactant aqueous solution is 2wt%, and the concentration of the potassium persulfate aqueous solution and the sodium bisulphite aqueous solution is 5wt%.
7. The method for preparing the light high-strength soft stone brick according to claim 1, which is characterized in that: the soft clay is pretreated by the following steps: dissolving cerium nitrate in deionized water, adding soft clay, stirring for dispersion, and centrifuging; stirring and dispersing the solid product in the diluent of the supernatant for the second time, and centrifugally separating; after multiple operations, drying the solid product to obtain cerium doped clay; wherein the mass ratio of cerium nitrate to soft clay is (1-1.5): 5.
8. The method for preparing the light high-strength soft stone brick according to claim 1, which is characterized in that: the cross-linking agent is sulfhydryl-beta-cyclodextrin; the epoxy monomer is a furyl epoxy monomer; the initiator comprises 2, 2-dimethoxy-2-phenyl acetophenone, 1-methylimidazole and methyl ethyl ketone peroxide with the mass ratio of (0.2-0.4) (0.15-0.3).
9. The method for preparing the light high-strength soft stone brick according to claim 8, which is characterized in that: the preparation method of the furyl epoxy monomer comprises the following steps: adding epichlorohydrin into a reaction system, adding a sodium hydroxide solution and a phase transfer catalyst, stirring at room temperature, adding furan amine, reacting for 20-24 hours at 50-55 ℃, extracting and washing to obtain a furyl epoxy monomer; wherein the mass ratio of the epichlorohydrin to the furan amine is (6-6.5): 1.
10. A lightweight high-strength soft stone tile produced by the method for producing a lightweight high-strength soft stone tile according to any one of claims 1 to 9.
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| WO2018086278A1 (en) * | 2016-11-14 | 2018-05-17 | 梁澍 | Lightweight self-insulating block |
| CN113603821A (en) * | 2021-07-21 | 2021-11-05 | 三峡大学 | Acrylic emulsion for weather-resistant cross-linked soft porcelain and preparation method thereof |
| CN114133212A (en) * | 2021-12-06 | 2022-03-04 | 惠州市创鑫隆实业有限公司 | Integrally-formed soft stone brick and preparation process thereof |
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2023
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| US4162348A (en) * | 1973-04-02 | 1979-07-24 | Sumitomo Chemical Company, Limited | Coloring of inorganic substrates and mineral materials |
| KR100803970B1 (en) * | 2007-11-23 | 2008-02-18 | (주)엄앤드이종합건축사사무소 | Mortar composition of inorganic-type aqueous polymer resin |
| CN103755278A (en) * | 2013-12-30 | 2014-04-30 | 上海古猿人石材有限公司 | Artificial ecological stone slab for decoration and preparation method thereof |
| CN104441820A (en) * | 2014-11-18 | 2015-03-25 | 上海古猿人石材有限公司 | Multilayer composite artificial travertine plate as well as composition and preparation method thereof |
| WO2018086278A1 (en) * | 2016-11-14 | 2018-05-17 | 梁澍 | Lightweight self-insulating block |
| CN113603821A (en) * | 2021-07-21 | 2021-11-05 | 三峡大学 | Acrylic emulsion for weather-resistant cross-linked soft porcelain and preparation method thereof |
| CN114133212A (en) * | 2021-12-06 | 2022-03-04 | 惠州市创鑫隆实业有限公司 | Integrally-formed soft stone brick and preparation process thereof |
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| CN116835913B (en) | 2023-12-19 |
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