CN102152397A - Preparation method for mortar and cement modified by gradient-distributed polymer emulsions - Google Patents
Preparation method for mortar and cement modified by gradient-distributed polymer emulsions Download PDFInfo
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- CN102152397A CN102152397A CN2010105757611A CN201010575761A CN102152397A CN 102152397 A CN102152397 A CN 102152397A CN 2010105757611 A CN2010105757611 A CN 2010105757611A CN 201010575761 A CN201010575761 A CN 201010575761A CN 102152397 A CN102152397 A CN 102152397A
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- 229920000642 polymer Polymers 0.000 title claims abstract description 78
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 56
- 239000000839 emulsion Substances 0.000 title claims abstract description 55
- 239000004568 cement Substances 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000004567 concrete Substances 0.000 claims description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- 238000010792 warming Methods 0.000 claims description 21
- 239000008367 deionised water Substances 0.000 claims description 16
- 229910021641 deionized water Inorganic materials 0.000 claims description 16
- 239000000178 monomer Substances 0.000 claims description 15
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 14
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 14
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 14
- 239000005642 Oleic acid Substances 0.000 claims description 14
- 238000009826 distribution Methods 0.000 claims description 14
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 14
- 239000012452 mother liquor Substances 0.000 claims description 14
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 10
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 9
- 239000012456 homogeneous solution Substances 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 230000008030 elimination Effects 0.000 claims description 7
- 238000003379 elimination reaction Methods 0.000 claims description 7
- 239000003995 emulsifying agent Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 claims description 7
- 230000004044 response Effects 0.000 claims description 7
- 230000002459 sustained effect Effects 0.000 claims description 7
- 230000008961 swelling Effects 0.000 claims description 7
- 238000006116 polymerization reaction Methods 0.000 claims description 6
- 239000013530 defoamer Substances 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 239000002344 surface layer Substances 0.000 abstract description 3
- 239000004566 building material Substances 0.000 abstract 1
- 229920000891 common polymer Polymers 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 230000000246 remedial effect Effects 0.000 abstract 1
- 239000011083 cement mortar Substances 0.000 description 14
- 239000002585 base Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 229920000126 latex Polymers 0.000 description 8
- 239000006185 dispersion Substances 0.000 description 6
- 239000004816 latex Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000005426 magnetic field effect Effects 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 239000011388 polymer cement concrete Substances 0.000 description 2
- 229920006254 polymer film Polymers 0.000 description 2
- 239000011118 polyvinyl acetate Substances 0.000 description 2
- 229920002689 polyvinyl acetate Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 241000238367 Mya arenaria Species 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical compound CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920006173 natural rubber latex Polymers 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000011433 polymer cement mortar Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 229920003169 water-soluble polymer Polymers 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a preparation method for mortar and cement modified by gradient-distributed polymer emulsions in the preparation field of building materials. The preparation method can improve compactness, waterproof performance, chloridion penetrability resistance, and tensile strength of the surface layers of the mortar and the cement under less polymer emulsion contents, and overcome the defects of high emulsion contents and expensive price of the modified mortar and the modified cement of common polymer emulsions. The modified mortar and the modified cement can be broadly applied to the fields such as railways, bridges, tunnels, large dams, offshore engineering, remedial works, etc.
Description
Technical field
The invention belongs to the construction material preparation field, be specifically related to emulsion modified mortar of a kind of gradient distribution polymer and concrete preparation method.
Background technology
Such as bridge, harbour engineering, tunnel, railway, underground engineering, municipal fabrication, airport etc., concrete is most important construction material in the modern civil engineering structure.Concrete material itself is a kind of porous material, its distribution of pores in from the microcosmic hole of tens nanometers to the visible hole of millimetre-sized macroscopic view, and the crack of macroscopic view etc.Traditional cement mortar exists a lot of shortcomings, and tensile strength and adhesion strength are lower as compression strength is higher, and elastic modelling quantity is higher and deformability is relatively poor, and character is more crisp, and cracking or the like makes it be faced with a lot of difficulties in application easily.Adopt polymer emulsion or re-dispersible glue powder that mortar and concrete are carried out modification, can give mortar and concrete many superior performances.A large amount of research and practices show that polymer adds cement-based mortar and concrete system, present two aspects of its acting body: to the improvement of new sand cutting slurry performance, such as improving the early stage cohesive force of mortar, improving service behaviour and operable time etc.; To the improvement of back mortar performance of condensing, as improve mechanical property, improve rupture strength and ultimate deformation, increase pliability, improve mortar bonding intensity, reduce cubical contraction, reduce porosity, improve impervious resistance to water etc., finally reach the function that prolongs mortar or concrete system service life.
Polymer modification mortar and concrete, more and more get more and more people's extensive concerning owing to its excellent performance as a kind of novel composite material.The polymer modification mortar is that polymer emulsion is mixed and stirred as Binder Materials mutually with cement with concrete, mixes the concrete that aggregate is mixed with.Polymer emulsion dewaters in cement mortar and concrete coagulation hardening process, and especially the transition region of cement and aggregate forms structure in mortar and concrete, the parcel cement granules, thus the performance of cement concrete is played a role in improving.Since 1940's, successively the someone utilizes cement filling natural rubber latex as paveio(u)r, proposes to produce with the method for match ratio the method for nature rubber latex modified cement sill.After the fifties, polymer is used for cement concrete has carried out research to a certain degree, and beginning is used the part Study achievement in actual engineering.Begin one's study with the polymer of different shape 60～seventies, such as using polymer monomer, resin, polymer powder etc. cement concrete improved.After the eighties, the degree of depth of research further deeply, be not only various polymer modification effects have been carried out more deep research, and the mechanism of action between mechanism of modification, polymer and cement, the hydrated cementitious product has also been carried out more deep analysis theoretically.The kind that is used for the polymer emulsion of cement-based material modification also increases gradually, and the natural rubber slurry from initial to polyvinyl acetate emulsion, and extensively adopts styrene-butadiene latex, polychloroprene latex, acrylate copolymer emulsion etc. after the seventies.
At present, the application at home of polymer cement mortar and concrete, based on the form of the modified cement mortar of polymer be used for repairing, anti-corrosion protective materials, and seldom use polymer modified cement-concrete as building structural materials.This is that fresh mortar has service behaviour preferably because the construction of polymer cement concrete modified mortar is more convenient, and is good with old concrete or steel surface bonding, is convenient to combine with damaged structure, forms fine and close impervious protection repair layer.
Polymer-modified cement mortar has been compared following tangible advantage with other cement mortar with concrete modifying measure (as adding fiber cement concrete) with concrete: cement mortar and mechanical properties of concrete improve, especially rupture strength is improved, though compression strength decreases, toughness is improved; Mortar and concrete rigidity reduce, and deformability increases, and is favourable to many engineerings; Mortar and concrete pore rate decrease, and the microcrack development suppresses to some extent; Mortar and concrete durability and corrosion resistance improve to some extent; Be specially adapted to damaged cement mortar and concrete repairing work; Adapt to existing cement mortar and concrete process for making fully.
In mortar and concrete, add polymer emulsion modified, desirable situation is that hydrated cementitious product and polymer phase IPN are saturating, polymer phase presents network structure in mortar and concrete, occur micro-crack in the concrete if load causes, the polymer film at this position will bear the tension that further transmission comes.Therefore crackle expansion palpus makeup energy can improve mortar and concrete tension and rupture strength, and elongation at break also increases.In the further hydration process of cement, polymer aggregate enrichment on pore wall also partly forms the thin layer that is covered in the hole inwall, further improves cement aggregate interfacial transition zone comparatively weak in cement mortar and the concrete.This just requires polymer emulsion can at room temperature be dried to continuous membrane structure, and institute's film forming has certain elasticity and intensity simultaneously.Because cement mortar and concrete are the strong basicity environment, polymer also must have good alkali resistance.
The polymer that is used for cement mortar and concrete modifying has four classes, i.e. water-soluble polymer, polymer emulsion (dispersion), redispersible polymer powders and liquid polymers.Use at present is more, effect better polymerization thing is a polymer emulsion, mainly divides three classes:
1) rubber latex class: mainly contain natural emulsion, butadiene-styrene latex, neoprene latex and methymethacrylate-butadiene latex etc.;
2) thermoplastic resin fat liquor class: mainly contain polyacrylic acid emulsion, polyvinyl acetate fat liquor, benzene emulsion, poly-vinyl propionate fat liquor, vinyl chloride-vinylidene chloride copolymer emulsion etc.;
3) thermosetting resin emulsion class: mainly contain epoxy resin latex, unsaturated polyester emulsion etc.
But polymer emulsion modified mortar and concrete effect that the above is traditional are single, the polymer emulsion volume is bigger, be generally 5%～20% of cement amount in mortar and the concrete, volume increase the raising that causes bleed rate in cement mortar and the concrete formation process easily, the reduction significantly of compression strength, the increase of water absorption rate, because the polymer emulsion price is comparatively expensive, higher volume also can cause the increase of cost simultaneously.
This patent relates to a kind of novel emulsion modified concrete of gradient distribution polymer, technique effect of the present invention is under lower emulsion volume (being part to tens/one of present like product), significantly improve cement mortar and concrete impermeability and anti-ion permeability, improve rupture strength.Used polymer emulsion is the compound composition of inorganic material and polymer, and the nano particle with stone soft shell structure can form the continuous polymer film with certain intensity at a lower temperature, and this emulsion has certain magnetic responsiveness simultaneously.Mortar and concrete formation and with the magnetic field-intensification surface after 24～48 hours, add polymer emulsion will be along the magnetization direction distribution gradient, and form compact protective film more at mortar and concrete surface layer.Functional characteristics is owing to adding in forming process thereby can generates protection at mortar and concrete surface original position that need not post-processed, the polymer emulsion volume is little.Impervious, the anti-iontophoretic injection effect of modified mortar and concrete surface is obvious, reduces porosity, increases density, prevents crack growth, and does not have other adverse side effect.The required synthetic polymer emulsion Modulatory character of this product is big, and structure and particle size are convenient regulates, the simple environmental protection of synthesis technique, and synthesis material economy is easy to get.Outward appearance is the weak coffee look, stable homogeneous solution, and there are good alkali resistance and storage stability in pH8～11, and sealing is preserved.
Summary of the invention
The purpose of this invention is to provide emulsion modified mortar of a kind of gradient distribution polymer and concrete preparation method.
Emulsion modified mortar of a kind of gradient distribution polymer and concrete preparation method is characterized in that, may further comprise the steps:
(1) under nitrogen environment, FeCl36H2O and FeSO47H2O are dissolved in the deionized water, be warming up to 40～70 ℃, add ammoniacal liquor fast, stirred 10 minutes, add oleic acid, be incubated 2～3 hours, continue to be warming up to 80～90 ℃ afterwards, stirred 0.5～1.5 hour, the cooling dilute black inorganic magnetic liquid;
(2) alternately wash inorganic magnetic liquid 5～6 times with ethanol and deionized water, carry out the magnetic field separation and add 5～15g normal octane, obtain the oil base magnetic mother liquor of mass fraction 5～80%;
(3) the oil base magnetic mother liquor and the aqueous solution that contains emulsifying agent are carried out ultrasonic the mixing obtain homogeneous solution, added 10～500g polymer monomer swelling 1～5 hour, be warming up to 50～90 ℃, add the abundant polymerization of 1～30g initator after 1～3 hour, added 40～600g monomer and 4～50g initator sustained response 1～12 hour, lower the temperature and cool off, regulate stoste pH value to alkalescence with NaOH behind the elimination residue, get the magnetic polymer emulsion;
(4) cement is mixed with mortar, make the mortar concrete batching; Magnetic polymer emulsion and water are stirred well to evenly; slowly join then in the mortar concrete batching; and adding defoamer; magnetic field in addition above institute's moulding mortar and concrete; remove magnetic field after 24～48 hours; maintenance 28 days obtains having the emulsion modified mortar of gradient distribution polymer and the concrete of compact surfaces protective layer.
The ratio that adds FeCl36H2O, FeSO47H2O, deionized water, ammoniacal liquor and oleic acid in the described step (1) is (20～100g): (10～60g): (50～250ml): (20～150g): (1～20g).
The mass ratio that adds cement, mortar, magnetic polymer emulsion, water and defoamer in the described step (4) is 450g: 1350g: (5～90g): 225g: (2～10g).
Beneficial effect of the present invention: the polymer emulsion volume that 1, the present invention added is little, saves cost.2, behind this polymer emulsion externally-applied magnetic field along the magnetization direction distribution gradient, and form compact protective film more at mortar and concrete surface layer, significantly improve cement mortar and concrete impermeability and anti-ion permeability, improve rupture strength.
The specific embodiment
The invention will be further described below in conjunction with embodiment:
Embodiment 1: under the nitrogen environment, 25g FeCl36H2O and 40g FeSO47H2O are dissolved in the 50ml deionized water, be warming up to 60 ℃, add 80g ammoniacal liquor fast, keep heating-up temperature and mixing speed after 10 minutes, add 2g oleic acid, be incubated 2 hours, continue to be warming up to 80 ℃ afterwards, continue to stir 0.5 hour.Alternately wash after the unnecessary oleic acid of 5～6 flush awaies of this liquid with ethanol and deionized water, carry out magnetic field and separate and add the 10g normal octane, obtain oil base magnetic mother liquor.The oil base magnetic mother liquor that 10g is prepared and the aqueous solution that contains the 5g emulsifying agent carry out ultrasonic mix obtain homogeneous solution after, added 10g polymer monomer swelling 2 hours, be warming up to 90 ℃, with behind the abundant polyase 13 of the initator of 3g hour, added 50g polymer monomer and 10g initator sustained response 3 hours, the cooling cooling is regulated the stoste pH value to alkalescence with NaOH behind the elimination residue, promptly gets the magnetic polymer emulsion.Test magnetic polymer stoste particle size is 180nm, and dispersion index is 0.134.
Embodiment 2: under the nitrogen environment, 45g FeCl36H2O and 60g FeSO47H2O are dissolved in the 100ml deionized water, be warming up to 60 ℃, add 120g ammoniacal liquor fast, keep heating-up temperature and mixing speed after 10 minutes, add 5g oleic acid, be incubated 2 hours, continue to be warming up to 90 ℃ afterwards, continue to stir 1 hour.Alternately wash after the unnecessary oleic acid of 5～6 flush awaies of this liquid with ethanol and deionized water, carry out magnetic field and separate and add the 5g normal octane, can obtain oil base magnetic mother liquor.The oil base magnetic mother liquor that 10g is prepared and the aqueous solution that contains the 8g emulsifying agent carry out ultrasonic mix obtain homogeneous solution after, added 100g polymer monomer swelling 5 hours, be warming up to 90 ℃, with behind the abundant polyase 13 of the initator of 6g hour, added 150g polymer monomer and 20g initator sustained response 8 hours, the cooling cooling is regulated the stoste pH value to alkalescence with NaOH behind the elimination residue, promptly gets the magnetic polymer emulsion.Test magnetic polymer stoste particle size is 130nm, and dispersion index is 0.152.
Embodiment 3: under the nitrogen environment, 75g FeCl36H2O and 40g FeSO47H2O are dissolved in the 150ml deionized water, be warming up to 70 ℃, add 40g ammoniacal liquor fast, keep heating-up temperature and mixing speed after 10 minutes, add 7g oleic acid, be incubated 3 hours, continue to be warming up to 90 ℃ afterwards, continue to stir 1 hour.Alternately wash after the unnecessary oleic acid of 5～6 flush awaies of this liquid with ethanol and deionized water, carry out magnetic field and separate and add the 18g normal octane, can obtain oil base magnetic mother liquor.The magnetic mother liquor that 60g is prepared and the aqueous solution that contains the 15g emulsifying agent carry out ultrasonic mix obtain homogeneous solution after, added 300g polymer monomer swelling 4 hours, be warming up to 90 ℃, with the abundant polymerization of the initator of 8g after 2 hours, added 300g polymer monomer and 40g initator sustained response 10 hours, the cooling cooling is regulated the stoste pH value to alkalescence with NaOH behind the elimination residue, promptly gets the magnetic polymer emulsion.Test magnetic polymer stoste particle size is 210nm, and dispersion index is 0.092.
Embodiment 4: under the nitrogen environment, 100g FeCl36H2O and 10g FeSO47H2O are dissolved in the 200ml deionized water, be warming up to 40 ℃, add 150g ammoniacal liquor fast, keep heating-up temperature and mixing speed after 10 minutes, add 10g oleic acid, be incubated 3 hours, continue to be warming up to 90 ℃ afterwards, continue to stir 1 hour.Alternately wash after the unnecessary oleic acid of 5～6 flush awaies of this liquid with ethanol and deionized water, carry out magnetic field and separate and add the 10g normal octane, can obtain oil base magnetic mother liquor.The oil base magnetic mother liquor that 40g is prepared and the aqueous solution that contains the 25g emulsifying agent carry out ultrasonic mix obtain homogeneous solution after, added 380g polymer monomer swelling 1 hour, be warming up to 60 ℃, with the abundant polymerization of the initator of 10g after 1 hour, added 400g polymer monomer and 45g initator sustained response 12 hours, the cooling cooling is regulated the stoste pH value to alkalescence with NaOH behind the elimination residue, promptly gets the magnetic polymer emulsion.Test magnetic polymer stoste particle size is 253nm, and dispersion index is 0.078.
Embodiment 5: under the nitrogen environment, 100g FeCl36H2O and 40g FeSO47H2O are dissolved in the 250ml deionized water, be warming up to 50 ℃, add 140g ammoniacal liquor fast, keep heating-up temperature and mixing speed after 10 minutes, add 18g oleic acid, be incubated 2 hours, continue to be warming up to 80 ℃ afterwards, continue to stir 1 hour.Alternately wash after the unnecessary oleic acid of 5～6 flush awaies of this liquid with ethanol and deionized water, carry out magnetic field and separate and add the 15g normal octane, can obtain oil base magnetic mother liquor.The oil base magnetic mother liquor that 80g is prepared and the aqueous solution that contains the 5g emulsifying agent carry out ultrasonic mix obtain homogeneous solution after, added 500g polymer monomer swelling 5 hours, be warming up to 60 ℃, with the abundant polymerization of the initator of 8g after 2 hours, added 600g polymer monomer and 48g initator sustained response 4 hours, the cooling cooling is regulated the stoste pH value to alkalescence with NaOH behind the elimination residue, promptly gets the magnetic polymer emulsion.Test magnetic polymer stoste particle size is 276nm, and dispersion index is 0.178.
Embodiment 6: 450g cement is mixed with the 1350g mortar, make the mortar concrete batching; Embodiment 3 described magnetic polymer emulsion 5～90g and 225g water are stirred well to evenly; slowly join then in the mortar concrete batching; and add 2～10g defoamer; magnetic field in addition above institute's moulding mortar and concrete; remove magnetic field after 24～48 hours; maintenance 28 days obtains having the emulsion modified mortar of gradient distribution polymer and the concrete of compact surfaces protective layer.Resulting properties of product test result is as follows:
1) permeability resistance test: ASTM C1202 direct current measurement method
Unit: coulomb (C)
Experimental result shows, identical volume in, do not compare with adding the magnetic field effect, under the effect of magnetic field, can improve resistance of chloride ion penetration 30%.In the magnetic field effect down, in the impermeabilisation effect that just can reach commercial like product about 3% under 1% the volume, the chloride-penetration resistance action effect is remarkable.
2) Mechanics Performance Testing: three-point bending resistance strength test
Unit: MPa (Mpa)
Experimental result shows, identical volume in, do not compare with adding the magnetic field effect, under the effect of magnetic field, can improve mortar bending strength about 10%.In the magnetic field effect down, in the bending strength that just can reach commercial like product about 3% under 1% the volume, obvious to the rupture strength raising of mortar, pliability increases.
Claims (3)
1. emulsion modified mortar of gradient distribution polymer and concrete preparation method is characterized in that, may further comprise the steps:
(1) under nitrogen environment, FeCl36H2O and FeSO47H2O are dissolved in the deionized water, be warming up to 40～70 ℃, add ammoniacal liquor fast, stirred 10 minutes, add oleic acid, be incubated 2～3 hours, continue to be warming up to 80～90 ℃ afterwards, stirred 0.5～1.5 hour, the cooling dilute black inorganic magnetic liquid;
(2) alternately wash inorganic magnetic liquid 5～6 times with ethanol and deionized water, carry out the magnetic field separation and add 5～15g normal octane, obtain the oil base magnetic mother liquor of mass fraction 5～80%;
(3) the oil base magnetic mother liquor and the aqueous solution that contains emulsifying agent are carried out ultrasonic the mixing obtain homogeneous solution, added 10～500g polymer monomer swelling 1～5 hour, be warming up to 50～90 ℃, add the abundant polymerization of 1～30g initator after 1～3 hour, added 40～600g monomer and 4～50g initator sustained response 1～12 hour, lower the temperature and cool off, regulate stoste pH value to alkalescence with NaOH behind the elimination residue, get the magnetic polymer emulsion;
(4) cement is mixed with mortar, make the mortar concrete batching; Magnetic polymer emulsion and water are stirred well to evenly; slowly join then in the mortar concrete batching; and adding defoamer; magnetic field in addition above institute's moulding mortar and concrete; remove magnetic field after 24～48 hours; maintenance 28 days obtains having the emulsion modified mortar of gradient distribution polymer and the concrete of compact surfaces protective layer.
2. according to described emulsion modified mortar of a kind of gradient distribution polymer of claim 1 and concrete preparation method, it is characterized in that the ratio that adds FeCl36H2O, FeSO47H2O, deionized water, ammoniacal liquor and oleic acid in the step (1) is (20～100g): (10～60g): (50～250ml): (20～150g): (1～20g).
3. according to described emulsion modified mortar of a kind of gradient distribution polymer of claim 1 and concrete preparation method, it is characterized in that the mass ratio that adds cement, mortar, magnetic polymer emulsion, water and defoamer in the step (4) is 450g: 1350g: (5～90g): 225g: (2～10g).
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115533019A (en) * | 2022-10-13 | 2022-12-30 | 安徽博煊铸造有限公司 | Preparation method and application method of self-hardening high-strength foundry molding sand |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3912765A1 (en) * | 1989-04-19 | 1990-10-25 | Werner Mueller | Sealant swollen by water for concrete sewage pipe - obtd. by curing (meth)acrylate monomer, polymer of bitumen dispersion, swelling filler etc. |
| JPH0733501A (en) * | 1993-07-16 | 1995-02-03 | Kumagai Gumi Co Ltd | Resin concrete composition |
| CN1258685A (en) * | 1998-12-26 | 2000-07-05 | 江苏日出(集团)公司 | Pure acrylic elastic emulsion |
| JP3512351B2 (en) * | 1999-03-26 | 2004-03-29 | 日本製紙株式会社 | Water reducing agent for cement and method for producing the same |
| CN101200919A (en) * | 2006-12-15 | 2008-06-18 | 朱玉华 | Modified polyphenyl composite insulation board and production technique thereof |
| CN101255042A (en) * | 2008-04-11 | 2008-09-03 | 清华大学 | Mortar and concrete modified by emulsified asphalt |
-
2010
- 2010-12-01 CN CN 201010575761 patent/CN102152397B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3912765A1 (en) * | 1989-04-19 | 1990-10-25 | Werner Mueller | Sealant swollen by water for concrete sewage pipe - obtd. by curing (meth)acrylate monomer, polymer of bitumen dispersion, swelling filler etc. |
| JPH0733501A (en) * | 1993-07-16 | 1995-02-03 | Kumagai Gumi Co Ltd | Resin concrete composition |
| CN1258685A (en) * | 1998-12-26 | 2000-07-05 | 江苏日出(集团)公司 | Pure acrylic elastic emulsion |
| JP3512351B2 (en) * | 1999-03-26 | 2004-03-29 | 日本製紙株式会社 | Water reducing agent for cement and method for producing the same |
| CN101200919A (en) * | 2006-12-15 | 2008-06-18 | 朱玉华 | Modified polyphenyl composite insulation board and production technique thereof |
| CN101255042A (en) * | 2008-04-11 | 2008-09-03 | 清华大学 | Mortar and concrete modified by emulsified asphalt |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115533019A (en) * | 2022-10-13 | 2022-12-30 | 安徽博煊铸造有限公司 | Preparation method and application method of self-hardening high-strength foundry molding sand |
| CN115533019B (en) * | 2022-10-13 | 2024-07-19 | 安徽博煊铸造有限公司 | Preparation method and application method of self-hardening high-strength casting sand |
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