CN110294605A - A kind of high efficiency water reducing agent for high-strength concrete - Google Patents
A kind of high efficiency water reducing agent for high-strength concrete Download PDFInfo
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- CN110294605A CN110294605A CN201910626283.3A CN201910626283A CN110294605A CN 110294605 A CN110294605 A CN 110294605A CN 201910626283 A CN201910626283 A CN 201910626283A CN 110294605 A CN110294605 A CN 110294605A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 41
- 239000011372 high-strength concrete Substances 0.000 title claims abstract description 15
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 38
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 36
- 239000002994 raw material Substances 0.000 claims abstract description 26
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims abstract description 19
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 claims abstract description 19
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims abstract description 19
- VHSHLMUCYSAUQU-UHFFFAOYSA-N 2-hydroxypropyl methacrylate Chemical compound CC(O)COC(=O)C(C)=C VHSHLMUCYSAUQU-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000004156 Azodicarbonamide Substances 0.000 claims abstract description 18
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims abstract description 18
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims abstract description 18
- 239000005913 Maltodextrin Substances 0.000 claims abstract description 18
- 229920002774 Maltodextrin Polymers 0.000 claims abstract description 18
- 235000019399 azodicarbonamide Nutrition 0.000 claims abstract description 18
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 18
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims abstract description 18
- 229940035034 maltodextrin Drugs 0.000 claims abstract description 18
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims abstract description 18
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims abstract description 18
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims abstract description 18
- 235000019832 sodium triphosphate Nutrition 0.000 claims abstract description 18
- TUNFSRHWOTWDNC-UHFFFAOYSA-N tetradecanoic acid Chemical class CCCCCCCCCCCCCC(O)=O TUNFSRHWOTWDNC-UHFFFAOYSA-N 0.000 claims abstract description 18
- 150000003751 zinc Chemical class 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims description 185
- 239000000463 material Substances 0.000 claims description 49
- 238000007710 freezing Methods 0.000 claims description 45
- 230000008014 freezing Effects 0.000 claims description 45
- 238000005192 partition Methods 0.000 claims description 41
- 239000000843 powder Substances 0.000 claims description 35
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 32
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 32
- -1 polyoxypropylene ethylene oxide glycerol Polymers 0.000 claims description 31
- 239000007788 liquid Substances 0.000 claims description 28
- LJKDOMVGKKPJBH-UHFFFAOYSA-N 2-ethylhexyl dihydrogen phosphate Chemical compound CCCCC(CC)COP(O)(O)=O LJKDOMVGKKPJBH-UHFFFAOYSA-N 0.000 claims description 25
- 229920001444 polymaleic acid Polymers 0.000 claims description 24
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 24
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 24
- SVYKKECYCPFKGB-UHFFFAOYSA-N N,N-dimethylcyclohexylamine Chemical compound CN(C)C1CCCCC1 SVYKKECYCPFKGB-UHFFFAOYSA-N 0.000 claims description 23
- RBNPOMFGQQGHHO-UHFFFAOYSA-N glyceric acid Chemical compound OCC(O)C(O)=O RBNPOMFGQQGHHO-UHFFFAOYSA-N 0.000 claims description 23
- 230000007246 mechanism Effects 0.000 claims description 23
- 238000003756 stirring Methods 0.000 claims description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 238000002955 isolation Methods 0.000 claims description 20
- 239000004113 Sepiolite Substances 0.000 claims description 18
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 18
- 235000019355 sepiolite Nutrition 0.000 claims description 18
- 229910052624 sepiolite Inorganic materials 0.000 claims description 18
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 17
- MWRWFPQBGSZWNV-UHFFFAOYSA-N Dinitrosopentamethylenetetramine Chemical compound C1N2CN(N=O)CN1CN(N=O)C2 MWRWFPQBGSZWNV-UHFFFAOYSA-N 0.000 claims description 17
- 229920005551 calcium lignosulfonate Polymers 0.000 claims description 17
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 claims description 17
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 17
- RRDQTXGFURAKDI-UHFFFAOYSA-N formaldehyde;naphthalene-2-sulfonic acid Chemical compound O=C.C1=CC=CC2=CC(S(=O)(=O)O)=CC=C21 RRDQTXGFURAKDI-UHFFFAOYSA-N 0.000 claims description 17
- 239000003456 ion exchange resin Substances 0.000 claims description 17
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 17
- 229940105132 myristate Drugs 0.000 claims description 17
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 17
- WOKDXPHSIQRTJF-UHFFFAOYSA-N 3-[3-[3-[3-[3-[3-[3-[3-[3-(2,3-dihydroxypropoxy)-2-hydroxypropoxy]-2-hydroxypropoxy]-2-hydroxypropoxy]-2-hydroxypropoxy]-2-hydroxypropoxy]-2-hydroxypropoxy]-2-hydroxypropoxy]-2-hydroxypropoxy]propane-1,2-diol Chemical compound OCC(O)COCC(O)COCC(O)COCC(O)COCC(O)COCC(O)COCC(O)COCC(O)COCC(O)COCC(O)CO WOKDXPHSIQRTJF-UHFFFAOYSA-N 0.000 claims description 16
- YASYEJJMZJALEJ-UHFFFAOYSA-N Citric acid monohydrate Chemical compound O.OC(=O)CC(O)(C(O)=O)CC(O)=O YASYEJJMZJALEJ-UHFFFAOYSA-N 0.000 claims description 16
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 16
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 16
- 229960002303 citric acid monohydrate Drugs 0.000 claims description 16
- OPGYRRGJRBEUFK-UHFFFAOYSA-L disodium;diacetate Chemical compound [Na+].[Na+].CC([O-])=O.CC([O-])=O OPGYRRGJRBEUFK-UHFFFAOYSA-L 0.000 claims description 16
- IWHVCHNCTHGORM-UHDJGPCESA-M potassium;(e)-3-phenylprop-2-enoate Chemical compound [K+].[O-]C(=O)\C=C\C1=CC=CC=C1 IWHVCHNCTHGORM-UHDJGPCESA-M 0.000 claims description 16
- 239000001632 sodium acetate Substances 0.000 claims description 16
- 235000017454 sodium diacetate Nutrition 0.000 claims description 16
- 239000004408 titanium dioxide Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 13
- 238000002360 preparation method Methods 0.000 claims description 11
- 239000011343 solid material Substances 0.000 claims description 11
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 10
- 239000011344 liquid material Substances 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 9
- 238000000227 grinding Methods 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 7
- 238000011946 reduction process Methods 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims 2
- 238000005520 cutting process Methods 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 239000004567 concrete Substances 0.000 abstract description 22
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000654 additive Substances 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 230000003467 diminishing effect Effects 0.000 abstract 1
- 150000003254 radicals Chemical class 0.000 abstract 1
- 239000004744 fabric Substances 0.000 description 14
- 239000000126 substance Substances 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 235000011837 pasties Nutrition 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000008030 superplasticizer Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 1
- 230000002337 anti-port Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- GPLRAVKSCUXZTP-UHFFFAOYSA-N diglycerol Chemical compound OCC(O)COCC(O)CO GPLRAVKSCUXZTP-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 239000002778 food additive Substances 0.000 description 1
- 238000002194 freeze distillation Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000004575 stone Substances 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention belongs to technical field of concrete additives, specifically a kind of high efficiency water reducing agent for high-strength concrete, it is made of the raw material of following parts by weight: ten 3-6 parts of polyglyceryl myristates, 5-8 parts of sodium tripolyphosphate, 2-5 parts of Sodium Polyacrylate, 4-9 parts of neopelex, 10-12 parts of poly (HPMA), 3-7 parts of zinc salt, 5-12 parts of maltodextrin, N, 5-10 parts of N '-dinitrosopentamethylene tetramine, 5-10 parts of azodicarbonamide, N, 3-4 parts of N- dimethyl cyclohexyl amine, 6-8 parts of polyacrylamide (PAM), 15-20 parts of hydroxyethyl cellulose, 8-16 parts of sodium carboxymethylcellulose, 13-20 parts and auxiliary agent 3-6 parts of naphthalenesulfonate formaldehyde condensation compound.Water-reducing agent of the present invention has a plurality of types of hydrophilic radicals, and diminishing is high-efficient, good fluidity, can obviously improve the mobility of concrete, early strong effect is significant after final set, can significantly improve the intensity of concrete each age.
Description
Technical Field
The invention belongs to the technical field of concrete admixtures, and particularly relates to a high-efficiency water reducing agent for high-strength concrete;
the invention also discloses a preparation method of the high-efficiency water reducing agent;
the invention also discloses special equipment for preparing the high-efficiency water reducing agent, namely a pressure mixing container.
Background
Concrete admixture, referred to as admixture for short, is a substance added to improve the performance of concrete before or during the mixing process of mixing the concrete. The admixture can effectively improve the performance of concrete and has good economic benefit, so the admixture is widely applied in many countries, and the application in engineering is more and more emphasized, thus becoming an indispensable material in concrete. The water reducing agent is the most important additive in concrete, and can reduce the water consumption for mixing and improve the strength of the concrete under the condition of unchanged concrete workability and cement consumption; or the cement consumption is saved under the condition of unchanged workability and strength. However, the water reducing agent used in the current market has the defects of low water reducing rate, poor fluidity and low strength, and cannot meet the market requirements.
Disclosure of Invention
The invention aims to provide a high-efficiency water reducing agent with high water reducing rate, high fluidity and obvious early strength effect.
The invention also aims to provide a preparation method of the high-efficiency water reducing agent.
The invention also aims to provide special equipment for preparing the high-efficiency water reducing agent, namely a pressure mixing container.
The technical scheme adopted by the invention for solving the technical problems is as follows: a high-efficiency water reducing agent for high-strength concrete is prepared from the following raw materials in parts by weight: 3-6 parts of decaglycerol myristate, 5-8 parts of sodium tripolyphosphate, 2-5 parts of sodium polyacrylate, 4-9 parts of sodium dodecyl benzene sulfonate, 10-12 parts of polymaleic acid (HPMA), 3-7 parts of zinc salt, 5-12 parts of maltodextrin, 5-10 parts of N, N' -dinitrosopentamethylenetetramine, 5-10 parts of azodicarbonamide, 3-4 parts of N, N-dimethylcyclohexylamine, 6-8 parts of Polyacrylamide (PAM), 15-20 parts of hydroxyethyl cellulose, 8-16 parts of sodium carboxymethylcellulose, 13-20 parts of naphthalenesulfonate formaldehyde condensate and 3-6 parts of an auxiliary agent;
the auxiliary agent comprises the following raw materials in parts by weight: 12-16 parts of 2-ethylhexyl phosphate, 8-10 parts of octylphenol polyoxyethylene ether, 4-6 parts of N, N' -ethylene bis stearamide, 10-12 parts of calcium lignosulfonate, 6-12 parts of beta-naphthalenesulfonate formaldehyde condensate, 2-4 parts of titanium dioxide, 5-10 parts of polyoxypropylene ethylene oxide glycerol ether, 4-6 parts of anhydrous magnesium chloride powder, 3-5 parts of citric acid monohydrate, 12-14 parts of potassium cinnamate, 7-9 parts of sodium diacetate, 10-14 parts of sepiolite, 16-20 parts of ion exchange resin and 10-13 parts of calcium carbonate.
As the most preferred embodiment of the invention, the high-efficiency water reducing agent is composed of the following raw materials in parts by weight: 5 parts of decaglycerol myristate, 6 parts of sodium tripolyphosphate, 4 parts of sodium polyacrylate, 6 parts of sodium dodecyl benzene sulfonate, 10 parts of polymaleic acid (HPMA), 4 parts of zinc salt, 8 parts of maltodextrin, 8 parts of N, N' -dinitrosopentamethylenetetramine, 5 parts of azodicarbonamide, 4 parts of N, N-dimethylcyclohexylamine, 6 parts of Polyacrylamide (PAM), 15 parts of hydroxyethyl cellulose, 10 parts of sodium carboxymethylcellulose, 15 parts of naphthalenesulfonate formaldehyde condensate and 4 parts of an auxiliary agent;
the auxiliary agent comprises the following raw materials in parts by weight: 12 parts of 2-ethylhexyl phosphate, 8 parts of octylphenol polyoxyethylene ether, 5 parts of N, N' -ethylene bis stearamide, 10 parts of calcium lignosulfonate, 7 parts of beta-naphthalenesulfonate formaldehyde condensate, 3 parts of titanium dioxide, 6 parts of polyoxypropylene ethylene oxide glycerol ether, 6 parts of anhydrous magnesium chloride powder, 5 parts of citric acid monohydrate, 13 parts of potassium cinnamate, 9 parts of sodium diacetate, 10 parts of sepiolite, 18 parts of ion exchange resin and 12 parts of calcium carbonate.
Decapolyglycerol myristate, white paste, CAS No.: 87390-32-7, offered by the new jade-like stone Carcheng science and technology Limited of Wuhan City. The molecular formula is:
sodium tripolyphosphate, white powder, is readily soluble in water, and its aqueous solution is alkaline. CAS number: 13573-18-7, available from sincere biotechnology limited of shannan. The molecular structural formula is:
sodium polyacrylate, white powder, CAS No.: 9003-04-7, which is provided by the commercial enterprises of rich chemical products in the overpass area of Jinan City. The molecular structural formula is:
sodium dodecylbenzenesulfonate, white or light yellow powder, CAS No.: 25155-30-0, and is available from Jinan chemical industry Co. Molecular structureThe formula is as follows:
polymaleic acid (HPMA), orange clear, CAS number: 26099-09-2, available from Shandong Shunhun New Material science and technology, Inc. The molecular structural formula is:
maltodextrin, a product provided by gallery institute food additives limited.
N, N' -dinitrosopentamethylenetetramine, pale yellow powder, CAS No.: 202- "928-3," a product supplied by Guangdong Wengjiang chemical reagents, Inc. The molecular structural formula is:
azodicarbonamide, white or light yellow powder, CAS No.: 123-77-3, available from chemical reagents, Inc., Guangdong, Wengjiang. The molecular structural formula is:
n, N-dimethylcyclohexylamine, colorless or pale yellow transparent liquid, CAS No.: 98-94-2, available from Shunhun new materials science and technology, Inc., Shandong. The molecular structural formula is:
polyacrylamide (PAM), white powder or small granules, CAS No.: 25085-02-3, offered by national luxury environmental protection technology limited company in chat cities. The molecular structural formula is:
hydroxyethyl cellulose, white to pale yellow fibrous or powdery solid, CAS No.: 9004-62-0, a product provided by New Yao biotech Co., Ltd, Dongguan. Molecular structural formulaComprises the following steps:
sodium carboxymethylcellulose, white fibrous or granular powder, CAS No.: 9004-32-4, available from Guangzhou Tuo Biotechnology Ltd. The molecular structural formula is:
naphthalene sulfonate formaldehyde condensate, light brown powder, CAS No.: 36290-04-7, available from Guangzhou Tuo Biotechnology Ltd. The molecular formula is: c21H14Na2O6S2。
2-ethylhexyl phosphate, colorless viscous oily liquid, CAS No.: 12645-31-7, which is available from pharmaceutical chemical company Limited, Wuhan La Na. The molecular structural formula is:
octylphenol polyoxyethylene ether, light yellow liquid, CAS No.: 9002-93-1, a product offered by Guangzhou Yao Innovative materials, Inc. The molecular structural formula is:
n, N' -ethylene bis stearamide, as yellowish fine particles, CAS number: 110-30-5, available from plastic limited, changzhou river sea. The molecular formula is: c38H76N2O2。
Calcium lignosulfonate, light yellow to dark brown powder, CAS number: 8061-52-7, the product is provided by aeolian chemical company, Inc. in the region of the Hill of Thai City.
Beta-naphthalenesulfonate formaldehyde condensate, light brown powder, CAS No.: 36290-04-7, the product is provided by wind chemical industry Co., Ltd, the molecular formula is: c21H14Na2O6S2。
PolyoxypropyleneEthylene oxide glyceryl ether, colorless or yellow non-volatile oily liquid, CAS No.: 9003-11-6, a product provided by Henan Detai chemical products Co., Ltd. The molecular formula is: c5H10O2。
A preparation method of a high-efficiency water reducing agent for high-strength concrete comprises the following steps:
s1, respectively crushing and grinding decaglycerol myristate, polymaleic acid, N-dimethyl cyclohexylamine, 2-ethylhexyl phosphate, octylphenol polyoxyethylene ether and polyoxypropylene ethylene oxide glycerol ether at low temperature, and storing at low temperature of-15 ℃ to-20 ℃ for later use; the non-solid matter is converted into solid matter by low temperature and pulverized into powder so as to be mixed with other solid matter. Preferably, the low temperature is set to-18 ℃, so that the effect of crushing into powder at the low temperature is ensured, and resources are saved.
S2, preparing an assistant, namely, on the basis of S1, uniformly mixing 12-16 parts of 2-ethylhexyl phosphate, 8-10 parts of octylphenol polyoxyethylene ether, 4-6 parts of N, N' -ethylene bis stearamide, 10-12 parts of calcium lignosulfonate, 6-12 parts of a beta-naphthalenesulfonate formaldehyde condensate, 2-4 parts of titanium dioxide, 5-10 parts of polyoxypropylene ethylene oxide glycerol ether, 4-6 parts of anhydrous magnesium chloride powder, 3-5 parts of citric acid monohydrate, 12-14 parts of potassium cinnamate, 7-9 parts of sodium diacetate, 10-14 parts of sepiolite, 16-20 parts of ion exchange resin and 10-13 parts of calcium carbonate in a pressure mixing container, wherein the temperature in the pressure mixing container is between-10 ℃ and-20 ℃, and the pressure is 1.0-2.0MPa to prepare the assistant, storing at-15 deg.C to-20 deg.C; preferably, the low temperature is set to-18 ℃; the pressure intensity is 1.5 MPa;
s3, on the basis of S2, mixing 3-6 parts of myristyl decaglycerol, 5-8 parts of sodium tripolyphosphate, 2-5 parts of sodium polyacrylate, 4-9 parts of sodium dodecyl benzene sulfonate, 10-12 parts of polymaleic acid (HPMA), 3-7 parts of zinc salt, 5-12 parts of maltodextrin, 5-10 parts of N, N' -dinitrosopentamethylenetetramine, 5-10 parts of azodicarbonamide, 3-4 parts of N, N-dimethylcyclohexylamine, 6-8 parts of Polyacrylamide (PAM), 15-20 parts of hydroxyethyl cellulose, 8-16 parts of sodium carboxymethyl cellulose, 13-20 parts of naphthalene sulfonate formaldehyde condensate and 3-6 parts of auxiliary agent uniformly in a pressure mixing container at the temperature of-10 ℃ to-20 ℃, the pressure intensity is 1.0-2.0 MPa; preferably, the low temperature is set to-18 ℃; the pressure intensity is 1.5 MPa;
s4, after uniformly mixing the raw materials based on S3, gradually reducing the pressure in the pressure mixing container to the normal pressure within 2 hours, and continuously stirring and keeping the temperature constant in the pressure reduction process;
s5, on the basis of S4, the temperature in the pressure mixing container is gradually increased to the normal temperature within 1 hour, and the stirring is continuously carried out in the temperature increasing process; coating the solid material with the liquid or paste material under stirring at room temperature
And S6, on the basis of S5, stopping stirring after the temperature and the pressure in the pressure mixing container return to normal temperature and normal pressure, and thus obtaining the water reducing agent.
A pressure mixing container comprises a barrel-shaped shell, supporting legs are arranged below the shell, a first partition plate and a second partition plate which are horizontally arranged and arranged at intervals are arranged in the shell, the interior of the shell is sequentially divided into a freezing chamber, a crushing chamber and a mixing bin from top to bottom by the first partition plate and the second partition plate, a plurality of freezing units are arranged in the freezing chamber and used for freezing liquid materials into solid, a plurality of crushing units are arranged in the crushing chamber, the materials enter the crushing units from the freezing units and are crushed by the crushing units, a dividing mechanism and a mixing mechanism are arranged in the mixing bin, the dividing mechanism is used for dividing the mixing bin into at least two independent mixing chambers, the mixing chambers are communicated to form the mixing bin, the mixing mechanism is respectively positioned in each mixing chamber and used for mixing the materials, the materials enter the mixing bin from the crushing chamber and are mixed, and the bottom of the mixing bin is of a circular arc-, the mixing and discharging of the materials are convenient; the top of the shell is provided with liquid feed ports which are in one-to-one correspondence with the freezing units, the liquid feed ports are provided with electromagnetic valves, the middle of the shell is provided with a solid feed port communicated with the mixing bin, the solid feed port is provided with an electromagnetic valve, the bottom of the shell is provided with a discharge port communicated with the mixing bin, and the discharge port is provided with an electromagnetic valve; the center of the shell is provided with a pipeline for conveying low-temperature nitrogen gas (minus 25 ℃ to 30 ℃), the pipeline is provided with air outlets in the freezing chamber, the crushing chamber and the mixing bin, electromagnetic valves for controlling the on-off of air flow are installed on the air outlets, nitrogen gas outlets are also arranged in the freezing chamber, the crushing chamber and the mixing bin, and the temperature in the pressure mixing container is gradually increased to the normal temperature by gradually increasing the temperature of the nitrogen gas in the S5 step; wherein,
the freezing unit comprises enclosing plates, a circular ring rotating seat, a rotating ring, a nut, a vertical rod, a fixing ring, a screw rod, a limiting ring, a first motor and a gear, wherein a through hole for communicating the freezing chamber and the crushing chamber is formed in the first isolating plate; the lower surface of the first partition plate is fixedly provided with a circular ring rotating seat, the inner side of the circular ring rotating seat is rotatably provided with a rotating ring, the outer circumference of the circular ring rotating seat is rotatably provided with a plurality of nuts, the outer circumference of each nut is provided with gear teeth, and the gear teeth are meshed with the gear teeth arranged on the outer circumference of the rotating ring; a plurality of upright rods are vertically arranged on the rotating ring, are uniformly arranged along the circumference of the rotating ring and are positioned in the through holes, and the tops of the upright rods are fixedly arranged on the fixing ring; the nut is provided with a screw, the upper end of the screw penetrates through the first partition plate, the tops of the plurality of screws are fixedly connected with limiting rings, and the limiting rings are rotatably connected with the fixing rings; a first motor is further installed on the first partition plate, and a gear meshed with the gear teeth on the nut is installed on a rotating shaft of the first motor;
a storage box is arranged on the outer side of the shell, a winding shaft in the storage box is wound with a cloth belt, the free end of the cloth belt penetrates through the gap between the surrounding plates and is spirally wound on the upright posts, and the free end of the cloth belt is fixed at the top ends of the upright posts; the winding shaft is connected with a torsion spring, and the winding force of the winding shaft can be adjusted through the torsion spring; use the pole setting to support the strap as the skeleton, enclose into tubbiness through the strap and realize depositing liquid material, the strap has better pliability and gas permeability, can realize liquid material's quick freezing.
When the device is used, the first motor drives the nut to rotate, the nut drives the rotating ring to rotate under the action of the gear teeth, the rotating ring drives the upright post to rotate, meanwhile, the rotating ring drives the nut to rotate, the nut drives the screw rod to move upwards through threads, the screw rod moves upwards to drive the limiting ring to move upwards, the limiting ring drives the upright post connected with the fixed ring to move upwards, so that the spiral rotation of the upright post is realized, the cloth belt is wound to form a barrel-shaped structure taking the upright post as a framework and the cloth belt as a barrel wall, then low-temperature liquid nitrogen is filled into the freezing chamber through a pipeline, the temperature in the freezing chamber is detected through the temperature sensor, when the temperature in the freezing chamber reaches a set value, liquid or paste materials are added into the prime barrel-shaped structure through the liquid feed inlet, then the liquid feed inlet is closed to freeze the liquid materials, and after a, a motor antiport, pole setting spiral decline this moment, the strap breaks away from and is rolled up to the rolling epaxial with frozen solid material, and frozen solid material is gone out by spiral propelling movement to crushing unit this moment, and crushing unit smashes frozen solid material.
The crushing unit comprises an isolation barrel, the isolation barrel is coaxially arranged with a through hole in the first partition plate, the isolation barrel is positioned on the inner side of a circle formed by a plurality of vertical rods, the upper surface of the isolation barrel is arranged without a gap with the rotating ring to prevent materials from flowing out from the gap between the isolation barrel and the rotating ring, the bottom of the isolation barrel is fixed on the second partition plate, the second partition plate is provided with a through hole which is the same as that of the first partition plate, the through hole of the second partition plate is provided with an electromagnetic valve, and a PLC controller controls the opening of the electromagnetic valve to control the crushed materials to enter the mixing chamber; a crushing motor, a crushing shaft and a crushing disc are arranged in the isolation barrel, the crushing disc and the crushing shaft are sequentially fixed on a rotating shaft of the crushing motor from top to bottom, and a crushing blade is fixed on the crushing shaft; be equipped with the blanking hole on the crushing dish, the upper surface of crushing dish is equipped with and is used for carrying out the broken tooth of preliminary breakage to frozen solid material. Before the liquid or pasty material is added, a layer of paper is laid on the surface of the crushing disc to prevent the liquid or pasty material from flowing out of the blanking holes.
The separating mechanism comprises a first baffle fixed on the lower surface of the second baffle, a first electric push rod fixed on the first baffle, and a second baffle fixed on the first electric push rod, the PLC controller controls the first electric push rod to stretch so as to control the second baffle to stretch, and when the second baffle stretches out, the second baffle and the first baffle separate the mixing bin into independent mixing chambers, so that the materials are independently mixed; when the second baffle plate retracts, the second baffle plate and the first baffle plate are communicated with each mixing chamber to form a large mixing bin, and therefore the final mixing of materials is achieved; the mixing mechanism is obliquely arranged at the bottom of the mixing bin, and the mixing mechanism can adopt any mechanism used for realizing material mixing in the prior art, so that redundant description is not repeated. After the materials are mixed, the electromagnetic valve at the discharge port can be opened to discharge the materials.
In order to realize the intelligent operation and the simple operation program of the invention, the temperature PLC controllers electrically connected with the PLC controllers are respectively arranged in the freezing chamber, the crushing chamber and the mixing bin, the accurate control of the temperature in the working process is ensured through the detection of the temperature PLC controllers, and the invention takes low-temperature liquid nitrogen (-25-30 ℃) as a cooling medium, thereby being more convenient for operation. The invention also discloses a pressure gauge and an electromagnetic pressure joint which are electrically connected with the PLC controller, wherein the pressure gauge and the electromagnetic pressure joint are respectively arranged in the freezing chamber, the crushing chamber and the mixing bin, the electromagnetic pressure joint is connected with the pressure tank, and the pressure in the freezing chamber, the crushing chamber and the mixing bin can be controlled through the electromagnetic pressure joint.
The invention has the beneficial effects that:
1. the water reducing agent disclosed by the invention has various types of hydrophilic groups, is high in water reducing efficiency and good in fluidity, can obviously improve the fluidity of concrete, is obvious in early-strength effect after final setting, and can obviously improve the strength of concrete at each age.
2. The auxiliary agent of the invention is added with the sepiolite, the combination rate of cement and water is reduced by means of the loose and porous characteristic of the sepiolite, and the combination speed of hydrophilic groups and water is increased by utilizing the ion exchange resin, so that the fluidity of water is improved.
3. The water reducing agent can complete the preparation process in one device, and has the advantages of simple and convenient operation process and less environmental pollution.
4. The pressure mixing container disclosed by the invention is intelligently controlled by the PLC, the step-by-step mixing work of the materials can be realized only by adding the materials into the pressure mixing container, and the pressure mixing container has the characteristics of simplicity in operation, convenience and quickness.
5. The pressure mixing container disclosed by the invention realizes the containing of liquid or paste materials by matching the upright stanchion and the cloth belt, the cloth belt is different from a metal structure, so that the cooling of the materials is faster and more uniform, the cloth belt is separated from the materials before crushing, the full utilization of the materials can be realized, the loss rate of the materials is less than 0.5%, the loss is far less than the loss of the materials during normal freezing crushing, and the loss can be ignored.
Drawings
FIG. 1 is a schematic view of the internal structure of a pressure mixing vessel according to the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1 in accordance with the present invention;
FIG. 4 is a schematic diagram of the construction of the refrigeration unit of the present invention;
FIG. 5 is a front view of the shredder plate of the present invention;
in the figure: the device comprises a shell 1, a first partition plate 2, a second partition plate 3, a freezing chamber 4, a crushing chamber 5, a mixing bin 6, a mixing chamber 61, an arc-shaped structure 62, a liquid feed inlet 7, a solid feed inlet 8, a discharge outlet 9, a pipeline 10, an air outlet 11, a nitrogen outlet 12, a coaming 13, a circular ring rotating seat 14, a rotating ring 15, a nut 16, a vertical rod 17, a fixing ring 18, a screw rod 19, a limiting ring 20, a first motor 22, a gear 23, a gap 131, a storage box 24, a cloth belt 25, an isolation barrel 26, a crushing motor 27, a crushing shaft 28, a crushing disc 29, a blanking hole 291, crushing teeth 292, a first baffle 30, a first electric push rod 31, a second baffle 32 and a mixing mechanism 33.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1:
a high-efficiency water reducing agent for high-strength concrete is prepared from the following raw materials in parts by weight: 3 parts of decaglycerol myristate, 8 parts of sodium tripolyphosphate, 3 parts of sodium polyacrylate, 7 parts of sodium dodecyl benzene sulfonate, 11 parts of polymaleic acid (HPMA), 6 parts of zinc salt, 5 parts of maltodextrin, 8 parts of N, N' -dinitrosopentamethylenetetramine, 8 parts of azodicarbonamide, 3 parts of N, N-dimethylcyclohexylamine, 6 parts of Polyacrylamide (PAM), 15 parts of hydroxyethyl cellulose, 12 parts of sodium carboxymethylcellulose, 14 parts of naphthalenesulfonate formaldehyde condensate and 6 parts of an auxiliary agent;
the auxiliary agent comprises the following raw materials in parts by weight: 12 parts of 2-ethylhexyl phosphate, 10 parts of octylphenol polyoxyethylene ether, 5 parts of N, N' -ethylene bis stearamide, 10 parts of calcium lignosulphonate, 8 parts of beta-naphthalenesulfonate formaldehyde condensate, 3 parts of titanium dioxide, 8 parts of polyoxypropylene ethylene oxide glycerol ether, 6 parts of anhydrous magnesium chloride powder, 3 parts of citric acid monohydrate, 12 parts of potassium cinnamate, 8 parts of sodium diacetate, 14 parts of sepiolite, 20 parts of ion exchange resin and 11 parts of calcium carbonate.
The preparation method of the high-efficiency water reducing agent comprises the following steps:
s1, respectively crushing and grinding 3 parts by weight of decaglycerol myristate, 11 parts by weight of polymaleic acid, 3 parts by weight of N, N-dimethylcyclohexylamine, 12 parts by weight of 2-ethylhexyl phosphate, 10 parts by weight of octylphenol polyoxyethylene ether and 8 parts by weight of polyoxypropylene ethylene oxide glycerol ether at-15 ℃ into powder, and storing the powder at-15 ℃ for later use;
s2, preparing an auxiliary agent, namely, on the basis of S1, uniformly mixing 12 parts of 2-ethylhexyl phosphate, 10 parts of octylphenol polyoxyethylene ether, 5 parts of N, N' -ethylene bis stearamide, 10 parts of calcium lignosulfonate, 8 parts of a beta-naphthalenesulfonate formaldehyde condensate, 3 parts of titanium dioxide, 8 parts of polyoxypropylene ethylene oxide glycerol ether, 6 parts of anhydrous magnesium chloride powder, 3 parts of citric acid monohydrate, 12 parts of potassium cinnamate, 8 parts of sodium diacetate, 14 parts of sepiolite, 20 parts of ion exchange resin and 11 parts of calcium carbonate in a pressure mixing container for 3 hours, wherein the temperature in the pressure mixing container is-15 ℃ and the pressure is 1.4MPa, and the auxiliary agent is prepared and stored for later use at-15 ℃;
s3, on the basis of S2, uniformly mixing 3 parts of myristyl decaglycerol, 8 parts of sodium tripolyphosphate, 3 parts of sodium polyacrylate, 7 parts of sodium dodecyl benzene sulfonate, 11 parts of polymaleic acid (HPMA), 6 parts of zinc salt, 5 parts of maltodextrin, 8 parts of N, N' -dinitrosopentamethylenetetramine, 8 parts of azodicarbonamide, 3 parts of N, N-dimethylcyclohexylamine, 6 parts of Polyacrylamide (PAM), 15 parts of hydroxyethyl cellulose, 12 parts of sodium carboxymethylcellulose, 14 parts of naphthalenesulfonate formaldehyde condensate and 6 parts of an auxiliary agent in a pressure mixing container for 3 hours, wherein the temperature in the pressure mixing container is-15 ℃, and the pressure is 1.5 MPa;
s4, after uniformly mixing the raw materials based on S3, gradually reducing the pressure in the pressure mixing container to the normal pressure within 2 hours, and continuously stirring and keeping the temperature constant in the pressure reduction process;
s5, on the basis of S4, the temperature in the pressure mixing container is gradually increased to the normal temperature within 1 hour, and the stirring is continuously carried out in the temperature increasing process;
and S6, on the basis of S5, stopping stirring after the temperature and the pressure in the pressure mixing container return to normal temperature and normal pressure, and thus obtaining the water reducing agent.
Example 2: a high-efficiency water reducing agent for high-strength concrete is prepared from the following raw materials in parts by weight: 6 parts of decaglycerol myristate, 7 parts of sodium tripolyphosphate, 2 parts of sodium polyacrylate, 8 parts of sodium dodecyl benzene sulfonate, 10 parts of polymaleic acid (HPMA), 6 parts of zinc salt, 5 parts of maltodextrin, 6 parts of N, N' -dinitrosopentamethylenetetramine, 6 parts of azodicarbonamide, 4 parts of N, N-dimethylcyclohexylamine, 6 parts of Polyacrylamide (PAM), 16 parts of hydroxyethyl cellulose, 8 parts of sodium carboxymethylcellulose, 14 parts of naphthalenesulfonate formaldehyde condensate and 5 parts of an auxiliary agent;
the auxiliary agent comprises the following raw materials in parts by weight: 12 parts of 2-ethylhexyl phosphate, 9 parts of octylphenol polyoxyethylene ether, 6 parts of N, N' -ethylene bis stearamide, 10 parts of calcium lignosulfonate, 10 parts of beta-naphthalenesulfonate formaldehyde condensate, 2 parts of titanium dioxide, 5 parts of polyoxypropylene ethylene oxide glycerol ether, 5 parts of anhydrous magnesium chloride powder, 4 parts of citric acid monohydrate, 12 parts of potassium cinnamate, 8 parts of sodium diacetate, 10 parts of sepiolite, 16 parts of ion exchange resin and 10 parts of calcium carbonate.
The preparation method of the high-efficiency water reducing agent comprises the following steps:
s1, respectively crushing and grinding 6 parts by weight of decaglycerol myristate, 10 parts by weight of polymaleic acid, 4 parts by weight of N, N-dimethylcyclohexylamine, 12 parts by weight of 2-ethylhexyl phosphate, 9 parts by weight of octylphenol polyoxyethylene ether and 5 parts by weight of polyoxypropylene ethylene oxide glycerol ether at-17 ℃ to powder, and storing at-17 ℃ for later use;
s2, preparing an auxiliary agent, namely, on the basis of S1, uniformly mixing 12 parts of 2-ethylhexyl phosphate, 9 parts of octylphenol polyoxyethylene ether, 6 parts of N, N' -ethylene bis stearamide, 10 parts of calcium lignosulfonate, 10 parts of a beta-naphthalenesulfonate formaldehyde condensate, 2 parts of titanium dioxide, 5 parts of polyoxypropylene ethylene oxide glycerol ether, 5 parts of anhydrous magnesium chloride powder, 4 parts of citric acid monohydrate, 12 parts of potassium cinnamate, 8 parts of sodium diacetate, 10 parts of sepiolite, 16 parts of ion exchange resin and 10 parts of calcium carbonate in a pressure mixing container for 3 hours, wherein the temperature in the pressure mixing container is-17 ℃ and the pressure is 1.5MPa, and the auxiliary agent is prepared and stored for later use at-17 ℃;
s3, on the basis of S2, uniformly mixing 6 parts of myristyl decaglycerol, 7 parts of sodium tripolyphosphate, 2 parts of sodium polyacrylate, 8 parts of sodium dodecyl benzene sulfonate, 10 parts of polymaleic acid (HPMA), 6 parts of zinc salt, 5 parts of maltodextrin, 6 parts of N, N' -dinitrosopentamethylenetetramine, 6 parts of azodicarbonamide, 4 parts of N, N-dimethylcyclohexylamine, 6 parts of Polyacrylamide (PAM), 16 parts of hydroxyethyl cellulose, 8 parts of sodium carboxymethylcellulose, 14 parts of naphthalenesulfonate formaldehyde condensate and 5 parts of an auxiliary agent in a pressure mixing container for 3 hours, wherein the temperature in the pressure mixing container is-17 ℃ and the pressure is 1.5 MPa;
s4, after uniformly mixing the raw materials based on S3, gradually reducing the pressure in the pressure mixing container to the normal pressure within 2 hours, and continuously stirring and keeping the temperature constant in the pressure reduction process;
s5, on the basis of S4, the temperature in the pressure mixing container is gradually increased to the normal temperature within 1 hour, and the stirring is continuously carried out in the temperature increasing process;
and S6, on the basis of S5, stopping stirring after the temperature and the pressure in the pressure mixing container return to normal temperature and normal pressure, and thus obtaining the water reducing agent.
Example 3:
a high-efficiency water reducing agent for high-strength concrete is prepared from the following raw materials in parts by weight: 5 parts of decaglycerol myristate, 6 parts of sodium tripolyphosphate, 4 parts of sodium polyacrylate, 6 parts of sodium dodecyl benzene sulfonate, 10 parts of polymaleic acid (HPMA), 4 parts of zinc salt, 8 parts of maltodextrin, 8 parts of N, N' -dinitrosopentamethylenetetramine, 5 parts of azodicarbonamide, 4 parts of N, N-dimethylcyclohexylamine, 6 parts of Polyacrylamide (PAM), 15 parts of hydroxyethyl cellulose, 10 parts of sodium carboxymethylcellulose, 15 parts of naphthalenesulfonate formaldehyde condensate and 4 parts of an auxiliary agent;
the auxiliary agent comprises the following raw materials in parts by weight: 12 parts of 2-ethylhexyl phosphate, 8 parts of octylphenol polyoxyethylene ether, 5 parts of N, N' -ethylene bis stearamide, 10 parts of calcium lignosulfonate, 7 parts of beta-naphthalenesulfonate formaldehyde condensate, 3 parts of titanium dioxide, 6 parts of polyoxypropylene ethylene oxide glycerol ether, 6 parts of anhydrous magnesium chloride powder, 5 parts of citric acid monohydrate, 13 parts of potassium cinnamate, 9 parts of sodium diacetate, 10 parts of sepiolite, 18 parts of ion exchange resin and 12 parts of calcium carbonate.
The preparation method of the high-efficiency water reducing agent comprises the following steps:
s1, respectively crushing and grinding 5 parts by weight of decaglycerol myristate, 10 parts by weight of polymaleic acid, 4 parts by weight of N, N-dimethylcyclohexylamine, 12 parts by weight of 2-ethylhexyl phosphate, 8 parts by weight of octylphenol polyoxyethylene ether and 6 parts by weight of polyoxypropylene ethylene oxide glycerol ether at-18 ℃ to powder, and storing at-18 ℃ for later use;
s2, preparing an auxiliary agent, namely, on the basis of S1, uniformly mixing 12 parts of 2-ethylhexyl phosphate, 8 parts of octylphenol polyoxyethylene ether, 5 parts of N, N' -ethylene bis stearamide, 10 parts of calcium lignosulfonate, 7 parts of a beta-naphthalenesulfonate formaldehyde condensate, 3 parts of titanium dioxide, 6 parts of polyoxypropylene ethylene oxide glycerol ether, 6 parts of anhydrous magnesium chloride powder, 5 parts of citric acid monohydrate, 13 parts of potassium cinnamate, 9 parts of sodium diacetate, 10 parts of sepiolite, 18 parts of ion exchange resin and 12 parts of calcium carbonate in a pressure mixing container for 3 hours, wherein the temperature in the pressure mixing container is-18 ℃ and the pressure is 1.5MPa, and the auxiliary agent is prepared and stored for later use at-18 ℃;
s3, on the basis of S2, uniformly mixing 5 parts of myristyl decaglycerol, 6 parts of sodium tripolyphosphate, 4 parts of sodium polyacrylate, 6 parts of sodium dodecyl benzene sulfonate, 10 parts of polymaleic acid (HPMA), 4 parts of zinc salt, 8 parts of maltodextrin, 8 parts of N, N' -dinitrosopentamethylenetetramine, 5 parts of azodicarbonamide, 4 parts of N, N-dimethylcyclohexylamine, 6 parts of Polyacrylamide (PAM), 15 parts of hydroxyethyl cellulose, 10 parts of sodium carboxymethylcellulose, 15 parts of naphthalenesulfonate formaldehyde condensate and 4 parts of auxiliary agent in a pressure mixing container for 3 hours, wherein the temperature in the pressure mixing container is-18 ℃ and the pressure is 1.5 MPa;
s4, after uniformly mixing the raw materials based on S3, gradually reducing the pressure in the pressure mixing container to the normal pressure within 2 hours, and continuously stirring and keeping the temperature constant in the pressure reduction process;
s5, on the basis of S4, the temperature in the pressure mixing container is gradually increased to the normal temperature within 1 hour, and the stirring is continuously carried out in the temperature increasing process;
and S6, on the basis of S5, stopping stirring after the temperature and the pressure in the pressure mixing container return to normal temperature and normal pressure, and thus obtaining the water reducing agent.
Example 4:
a high-efficiency water reducing agent for high-strength concrete is prepared from the following raw materials in parts by weight: 3 parts of decaglycerol myristate, 5 parts of sodium tripolyphosphate, 5 parts of sodium polyacrylate, 7 parts of sodium dodecyl benzene sulfonate, 12 parts of polymaleic acid (HPMA), 3 parts of zinc salt, 10 parts of maltodextrin, 8 parts of N, N' -dinitrosopentamethylenetetramine, 6 parts of azodicarbonamide, 4 parts of N, N-dimethylcyclohexylamine, 6 parts of Polyacrylamide (PAM), 18 parts of hydroxyethyl cellulose, 16 parts of sodium carboxymethylcellulose, 15 parts of naphthalenesulfonate formaldehyde condensate and 3 parts of an auxiliary agent;
the auxiliary agent comprises the following raw materials in parts by weight: 12 parts of 2-ethylhexyl phosphate, 9 parts of octylphenol polyoxyethylene ether, 6 parts of N, N' -ethylene bis stearamide, 12 parts of calcium lignosulfonate, 10 parts of beta-naphthalenesulfonate formaldehyde condensate, 2 parts of titanium dioxide, 6 parts of polyoxypropylene ethylene oxide glycerol ether, 5 parts of anhydrous magnesium chloride powder, 5 parts of citric acid monohydrate, 14 parts of potassium cinnamate, 7 parts of sodium diacetate, 14 parts of sepiolite, 18 parts of ion exchange resin and 10 parts of calcium carbonate.
The preparation method of the high-efficiency water reducing agent comprises the following steps:
s1, respectively crushing and grinding 3 parts by weight of decaglycerol myristate, 12 parts by weight of polymaleic acid, 4 parts by weight of N, N-dimethylcyclohexylamine, 12 parts by weight of 2-ethylhexyl phosphate, 9 parts by weight of octylphenol polyoxyethylene ether and 6 parts by weight of polyoxypropylene ethylene oxide glycerol ether at-19 ℃ to powder, and storing at-19 ℃ for later use;
s2, preparing an auxiliary agent, namely, on the basis of S1, uniformly mixing 12 parts of 2-ethylhexyl phosphate, 9 parts of octylphenol polyoxyethylene ether, 6 parts of N, N' -ethylene bis stearamide, 12 parts of calcium lignosulfonate, 10 parts of a beta-naphthalenesulfonate formaldehyde condensate, 2 parts of titanium dioxide, 6 parts of polyoxypropylene ethylene oxide glycerol ether, 5 parts of anhydrous magnesium chloride powder, 5 parts of citric acid monohydrate, 14 parts of potassium cinnamate, 7 parts of sodium diacetate, 14 parts of sepiolite, 18 parts of ion exchange resin and 10 parts of calcium carbonate in a pressure mixing container for 3 hours, wherein the temperature in the pressure mixing container is-19 ℃ and the pressure is 1.7MPa, and the auxiliary agent is prepared and stored for later use at-19 ℃;
s3, on the basis of S2, uniformly mixing 3 parts of myristyl decaglycerol, 5 parts of sodium tripolyphosphate, 5 parts of sodium polyacrylate, 7 parts of sodium dodecyl benzene sulfonate, 12 parts of polymaleic acid (HPMA), 3 parts of zinc salt, 10 parts of maltodextrin, 8 parts of N, N' -dinitrosopentamethylenetetramine, 6 parts of azodicarbonamide, 4 parts of N, N-dimethylcyclohexylamine, 6 parts of Polyacrylamide (PAM), 18 parts of hydroxyethyl cellulose, 16 parts of sodium carboxymethylcellulose, 15 parts of naphthalenesulfonate formaldehyde condensate and 3 parts of auxiliary agent in a pressure mixing container for 3 hours, wherein the temperature in the pressure mixing container is-19 ℃ and the pressure is 1.7 MPa;
s4, after uniformly mixing the raw materials based on S3, gradually reducing the pressure in the pressure mixing container to the normal pressure within 2 hours, and continuously stirring and keeping the temperature constant in the pressure reduction process;
s5, on the basis of S4, the temperature in the pressure mixing container is gradually increased to the normal temperature within 1 hour, and the stirring is continuously carried out in the temperature increasing process;
and S6, on the basis of S5, stopping stirring after the temperature and the pressure in the pressure mixing container return to normal temperature and normal pressure, and thus obtaining the water reducing agent.
Example 5:
a high-efficiency water reducing agent for high-strength concrete is prepared from the following raw materials in parts by weight: 4 parts of decaglycerol myristate, 8 parts of sodium tripolyphosphate, 4 parts of sodium polyacrylate, 9 parts of sodium dodecyl benzene sulfonate, 11 parts of polymaleic acid (HPMA), 4 parts of zinc salt, 7 parts of maltodextrin, 11 parts of N, N' -dinitrosopentamethylenetetramine, 10 parts of azodicarbonamide, 3 parts of N, N-dimethylcyclohexylamine, 8 parts of Polyacrylamide (PAM), 16 parts of hydroxyethyl cellulose, 12 parts of sodium carboxymethylcellulose, 14 parts of naphthalenesulfonate formaldehyde condensate and 3 parts of an auxiliary agent;
the auxiliary agent comprises the following raw materials in parts by weight: 12 parts of 2-ethylhexyl phosphate, 8 parts of octylphenol polyoxyethylene ether, 5 parts of N, N' -ethylene bis stearamide, 12 parts of calcium lignosulfonate, 12 parts of beta-naphthalenesulfonate formaldehyde condensate, 4 parts of titanium dioxide, 5 parts of polyoxypropylene ethylene oxide glycerol ether, 6 parts of anhydrous magnesium chloride powder, 5 parts of citric acid monohydrate, 12 parts of potassium cinnamate, 7 parts of sodium diacetate, 14 parts of sepiolite, 20 parts of ion exchange resin and 10 parts of calcium carbonate.
The preparation method of the high-efficiency water reducing agent comprises the following steps:
s1, respectively crushing and grinding 4 parts by weight of decaglycerol myristate, 11 parts by weight of polymaleic acid, 3 parts by weight of N, N-dimethylcyclohexylamine, 12 parts by weight of 2-ethylhexyl phosphate, 8 parts by weight of octylphenol polyoxyethylene ether and 5 parts by weight of polyoxypropylene ethylene oxide glycerol ether at-20 ℃ into powder, and storing the powder at-20 ℃ for later use;
s2, preparing an auxiliary agent, namely, on the basis of S1, uniformly mixing 12 parts of 2-ethylhexyl phosphate, 8 parts of octylphenol polyoxyethylene ether, 5 parts of N, N' -ethylene bis stearamide, 12 parts of calcium lignosulfonate, 12 parts of a beta-naphthalenesulfonate formaldehyde condensate, 4 parts of titanium dioxide, 5 parts of polyoxypropylene ethylene oxide glycerol ether, 6 parts of anhydrous magnesium chloride powder, 5 parts of citric acid monohydrate, 12 parts of potassium cinnamate, 7 parts of sodium diacetate, 14 parts of sepiolite, 20 parts of ion exchange resin and 10 parts of calcium carbonate in a pressure mixing container for 3 hours, wherein the temperature in the pressure mixing container is-20 ℃ and the pressure is 2.0MPa, and the auxiliary agent is prepared and stored for later use at-20 ℃;
s3, on the basis of S2, uniformly mixing 4 parts of myristyl decaglycerol, 8 parts of sodium tripolyphosphate, 4 parts of sodium polyacrylate, 9 parts of sodium dodecyl benzene sulfonate, 11 parts of polymaleic acid (HPMA), 4 parts of zinc salt, 7 parts of maltodextrin, 11 parts of N, N' -dinitrosopentamethylenetetramine, 10 parts of azodicarbonamide, 3 parts of N, N-dimethylcyclohexylamine, 8 parts of Polyacrylamide (PAM), 16 parts of hydroxyethyl cellulose, 12 parts of sodium carboxymethylcellulose, 14 parts of naphthalenesulfonate formaldehyde condensate and 3 parts of auxiliary agent in a pressure mixing container for 3 hours, wherein the temperature in the pressure mixing container is-20 ℃ and the pressure is 2.0 MPa;
s4, after uniformly mixing the raw materials based on S3, gradually reducing the pressure in the pressure mixing container to the normal pressure within 2 hours, and continuously stirring and keeping the temperature constant in the pressure reduction process;
s5, on the basis of S4, the temperature in the pressure mixing container is gradually increased to the normal temperature within 1 hour, and the stirring is continuously carried out in the temperature increasing process;
and S6, on the basis of S5, stopping stirring after the temperature and the pressure in the pressure mixing container return to normal temperature and normal pressure, and thus obtaining the water reducing agent.
Experiment 1: the main performance test results of the superplasticizer prepared in the above examples 1 to 5 when blended into concrete are shown in the following table (the blending amount of the superplasticizer is 3.0%):
as can be seen from the table above, the water reducing rate of the water reducing agent for concrete can reach 27.3 at most, the bleeding rate can reach 29 at least, the gas content can reach 1.7 at least, and the compressive strength ratio can reach 143 at most after 90 days.
Experiment 2: the main performance test results of the concrete prepared from the high-efficiency water reducing agent prepared in the embodiment 3 with different doping amounts are as follows:
as can be seen from the table above, when the invention is used in concrete, 1.5-4.5% of the total amount of the concrete is added; when the slump constant is 1.5%, the slump of the concrete can reach 12.2 cm; when the mixing amount is 4.5, the slump of the concrete can reach 44.2cm, and the compression strength ratio of the concrete is 165 percent at most in 3 days, 148 percent at most in 28 days and 143 percent at most in 90 days.
As shown in fig. 1 to 5, the pressure mixing container according to the present invention includes a cylindrical casing 1, a support leg is provided below the casing 1, a first partition 2 and a second partition 3 are provided in the casing 1, the first partition 2 and the second partition 3 are horizontally arranged and spaced from each other, the casing 1 is internally divided into a freezing chamber 4, a crushing chamber 5 and a mixing chamber 6 from top to bottom, the freezing chamber 4 is internally provided with a plurality of freezing units for freezing liquid material into solid, the crushing chamber 5 is internally provided with a plurality of crushing units, the material enters the crushing units from the freezing units and is crushed by the crushing units, the mixing chamber 6 is internally provided with a dividing mechanism and a mixing mechanism 33, the dividing mechanism is used for dividing the mixing chamber 6 into at least two independent mixing chambers 61, the mixing chambers 61 are communicated to form the mixing chamber 6, the mixing mechanisms 33 are respectively located in the mixing chambers 61 for mixing the material, the materials enter the mixing bin 6 from the crushing chamber 5 to be mixed, and the bottom of the mixing bin 6 is of an arc-shaped structure 62, so that the materials can be conveniently mixed and discharged; the top of the shell 1 is provided with liquid feed ports 7 which are in one-to-one correspondence with the freezing units, electromagnetic valves are installed on the liquid feed ports 7, a solid feed port 8 communicated with the mixing bin 6 is arranged in the middle of the shell 1, the electromagnetic valves are installed on the solid feed port 8, a discharge port 9 communicated with the mixing bin 6 is arranged at the bottom of the shell 1, and the electromagnetic valves are installed on the discharge port 9; a pipeline 10 for conveying low-temperature nitrogen gas (minus 25 ℃ to 30 ℃) is arranged in the center of the shell 1, gas outlets 11 are formed in the freezing chamber 4, the crushing chamber 5 and the mixing bin 6 of the pipeline 10, electromagnetic valves for controlling the on-off of gas flow are mounted on the gas outlets 11, nitrogen gas outlets 12 are further formed in the freezing chamber 4, the crushing chamber 5 and the mixing bin 6, electromagnetic valves are mounted on the nitrogen gas outlets 12 and used for controlling the circulation of the nitrogen gas, and in the S5 step, the temperature in the pressure mixing container is gradually increased to the normal temperature through gradually increasing the temperature of the nitrogen gas; wherein,
the freezing unit comprises enclosing plates 13, a circular ring rotating seat 14, a rotating ring 15, nuts 16, upright rods 17, a fixing ring 18, a screw rod 19, a limiting ring 20, a first motor 22 and gears 23, a through hole for communicating the freezing chamber 4 with the crushing chamber 5 is formed in the first partition plate 2, the enclosing plates 13 are arranged on the upper surface of the first partition plate 2 and located at the edges of the through hole, and gaps 131 are formed between the enclosing plates 13; the lower surface of the first partition plate 2 is fixedly provided with a circular ring rotating seat 14, the inner side of the circular ring rotating seat 14 is rotatably provided with a rotating ring 15, the outer circumference of the circular ring rotating seat 14 is rotatably provided with a plurality of nuts 16, the outer circumference of each nut 16 is provided with gear teeth, and the gear teeth are meshed with the gear teeth arranged on the outer circumference of the rotating ring 15; a plurality of upright rods 17 are vertically arranged on the rotating ring 15, the upright rods 17 are uniformly arranged along the circumference of the rotating ring 15 and are positioned in the through holes, and the tops of the upright rods 17 are fixedly arranged on the fixing ring 18; the nut 16 is provided with a screw rod 19, the upper end of the screw rod 19 penetrates through the first partition plate 2, the tops of the screw rods 19 are fixedly connected with a limiting ring 20, and the limiting ring 20 is rotatably connected with the fixing ring 18; a first motor 22 is further installed on the first partition plate 2, and a gear 23 meshed with the gear teeth on the nut 16 is installed on a rotating shaft of the first motor 22;
a storage box 24 is arranged on the outer side of the shell 1, a cloth tape 25 is wound on a winding shaft in the storage box 24, the free end of the cloth tape 25 penetrates through a gap 131 between the enclosing plates 13 and is spirally wound on the upright posts 17, and the free end of the cloth tape 25 is fixed at the top ends of the upright posts 17; the winding shaft is connected with a torsion spring, and the winding force of the winding shaft can be adjusted through the torsion spring; use pole setting 17 to support strap 25 as the skeleton, enclose into tubbiness through strap 25 and realize depositing liquid material, strap 25 has better pliability and gas permeability, can realize liquid material's quick freezing.
When the freezing chamber temperature monitoring device is used, the first motor 22 drives the nut 16 to rotate, the nut 16 drives the rotating ring 15 to rotate under the action of the gear teeth, the rotating ring 15 rotates to drive the upright rod 17 to rotate, meanwhile, the rotating ring 15 drives the nut 16 to rotate, the nut 16 drives the screw rod 19 to move upwards through threads, the screw rod 19 moves upwards to drive the limiting ring 20 to move upwards, the limiting ring 20 drives the upright rod 17 connected with the fixing ring 18 to move upwards, so that the upright rod 17 rotates spirally, the cloth belt 25 is wound to form a barrel-shaped structure with the upright rod 17 as a framework and the cloth belt 25 as a barrel wall, then low-temperature liquid nitrogen is filled into the freezing chamber 4 through a pipeline, the temperature in the freezing chamber 4 is detected through the temperature sensor, when the temperature in the freezing chamber 4 reaches a set value, liquid or paste materials are added into the prime barrel-shaped structure through the liquid feed inlet 7, then the liquid feed inlet 7, after a period of time, when the liquid material completely formed the solid, a motor 22 counter-rotating, this moment pole setting 17 spiral descends, and strap 25 breaks away from with frozen solid material and is rolled up to the rolling axle on, frozen solid material was exported by spiral propelling movement to crushing unit this moment, and crushing unit smashed frozen solid material.
The crushing unit comprises an isolation barrel 26, the isolation barrel 26 and a through hole in the first partition plate 2 are coaxially arranged, the isolation barrel 26 is located on the inner side of a circle formed by the surrounding of the upright posts 17, the upper surface of the isolation barrel 26 and the rotating ring 15 are arranged without a gap 131, so that materials are prevented from flowing out of the gap 131 between the isolation barrel 26 and the rotating ring 15, the bottom of the isolation barrel 26 is fixed on the second partition plate 3, the through hole which is the same as that in the first partition plate 2 is formed in the second partition plate 3, an electromagnetic valve is arranged on the through hole in the second partition plate 3, and the PLC controls the opening of the electromagnetic valve to control the crushed materials to enter the mixing chamber 61; a crushing motor 27, a crushing shaft 28 and a crushing disc 29 are arranged in the isolation barrel 26, the crushing disc 29 and the crushing shaft 28 are sequentially fixed on a rotating shaft of the crushing motor 27 from top to bottom, and crushing blades are fixed on the crushing shaft 28; the crushing disc 29 is provided with a blanking hole 291, and the upper surface of the crushing disc 29 is provided with crushing teeth 292 for primarily crushing frozen solid materials. Before the liquid or pasty material is added, a layer of paper is now laid on the surface of the grating disk 29 to prevent the liquid or pasty material from flowing out of the blanking openings 291.
The separating mechanism comprises a first baffle 30 fixed on the lower surface of the second partition plate 3, a first electric push rod 31 fixed on the first baffle 30 and a second baffle 32 fixed on the first electric push rod 31, the PLC controller controls the first electric push rod 31 to stretch and retract so as to control the second baffle 32 to stretch, and when the second baffle 32 stretches out, the second baffle 32 and the first baffle 30 separate the mixing bin 6 into independent mixing chambers 61 so as to realize independent mixing of materials; when the second baffle 32 retracts, the second baffle 32 and the first baffle 30 communicate each mixing chamber 61 to form a large mixing bin 6, and further final mixing of materials is realized; the mixing mechanism 33 is obliquely arranged at the bottom of the mixing bin 6, and any mechanism used for realizing material mixing in the prior art can be adopted as the mixing mechanism 33, which is not described in detail herein. After the materials are mixed, the electromagnetic valve at the discharge port 9 can be opened to discharge the materials.
In order to realize the intelligent operation and the simple operation program of the invention, the invention is provided with the temperature PLC controllers electrically connected with the PLC controllers in the freezing chamber 4, the crushing chamber 5 and the mixing bin 6, the accurate control of the temperature in the working process is ensured through the detection of the temperature PLC controllers, and the invention takes low-temperature liquid nitrogen (-25 ℃ -30 ℃) as a medium for cooling, thereby being more convenient for operation. In the invention, a pressure gauge and an electromagnetic pressure connector which are electrically connected with a PLC (programmable logic controller) are also arranged in the freezing chamber 4, the crushing chamber 5 and the mixing bin 6, the electromagnetic pressure connector is connected with a pressure tank, and the pressure in the freezing chamber 4, the crushing chamber 5 and the mixing bin 6 can be controlled through the electromagnetic pressure connector.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A high-efficiency water reducing agent for high-strength concrete is characterized in that: the composition is characterized by comprising the following raw materials in parts by weight:
3-6 parts of decaglycerol myristate, 5-8 parts of sodium tripolyphosphate, 2-5 parts of sodium polyacrylate, 4-9 parts of sodium dodecyl benzene sulfonate, 10-12 parts of polymaleic acid (HPMA), 3-7 parts of zinc salt, 5-12 parts of maltodextrin, 5-10 parts of N, N' -dinitrosopentamethylenetetramine, 5-10 parts of azodicarbonamide, 3-4 parts of N, N-dimethylcyclohexylamine, 6-8 parts of Polyacrylamide (PAM), 15-20 parts of hydroxyethyl cellulose, 8-16 parts of sodium carboxymethylcellulose, 13-20 parts of naphthalenesulfonate formaldehyde condensate and 3-6 parts of an auxiliary agent;
the auxiliary agent comprises the following raw materials in parts by weight: 12-16 parts of 2-ethylhexyl phosphate, 8-10 parts of octylphenol polyoxyethylene ether, 4-6 parts of N, N' -ethylene bis stearamide, 10-12 parts of calcium lignosulfonate, 6-12 parts of beta-naphthalenesulfonate formaldehyde condensate, 2-4 parts of titanium dioxide, 5-10 parts of polyoxypropylene ethylene oxide glycerol ether, 4-6 parts of anhydrous magnesium chloride powder, 3-5 parts of citric acid monohydrate, 12-14 parts of potassium cinnamate, 7-9 parts of sodium diacetate, 10-14 parts of sepiolite, 16-20 parts of ion exchange resin and 10-13 parts of calcium carbonate.
2. The high-efficiency water reducing agent for high-strength concrete according to claim 1, characterized in that: the composition is characterized by comprising the following raw materials in parts by weight: 5 parts of decaglycerol myristate, 6 parts of sodium tripolyphosphate, 4 parts of sodium polyacrylate, 6 parts of sodium dodecyl benzene sulfonate, 10 parts of polymaleic acid (HPMA), 4 parts of zinc salt, 8 parts of maltodextrin, 8 parts of N, N' -dinitrosopentamethylenetetramine, 5 parts of azodicarbonamide, 4 parts of N, N-dimethylcyclohexylamine, 6 parts of Polyacrylamide (PAM), 15 parts of hydroxyethyl cellulose, 10 parts of sodium carboxymethylcellulose, 15 parts of naphthalenesulfonate formaldehyde condensate and 4 parts of an auxiliary agent;
the auxiliary agent comprises the following raw materials in parts by weight: 12 parts of 2-ethylhexyl phosphate, 8 parts of octylphenol polyoxyethylene ether, 5 parts of N, N' -ethylene bis stearamide, 10 parts of calcium lignosulfonate, 7 parts of beta-naphthalenesulfonate formaldehyde condensate, 3 parts of titanium dioxide, 6 parts of polyoxypropylene ethylene oxide glycerol ether, 6 parts of anhydrous magnesium chloride powder, 5 parts of citric acid monohydrate, 13 parts of potassium cinnamate, 9 parts of sodium diacetate, 10 parts of sepiolite, 18 parts of ion exchange resin and 12 parts of calcium carbonate.
3. A preparation method of a high-efficiency water reducing agent for high-strength concrete is characterized by comprising the following steps:
s1, respectively crushing and grinding decaglycerol myristate, polymaleic acid, N-dimethyl cyclohexylamine, 2-ethylhexyl phosphate, octylphenol polyoxyethylene ether and polyoxypropylene ethylene oxide glycerol ether at low temperature, and storing at low temperature of-15 ℃ to-20 ℃ for later use;
s2, preparing an assistant, namely, on the basis of S1, uniformly mixing 12-16 parts of 2-ethylhexyl phosphate, 8-10 parts of octylphenol polyoxyethylene ether, 4-6 parts of N, N' -ethylene bis stearamide, 10-12 parts of calcium lignosulfonate, 6-12 parts of a beta-naphthalenesulfonate formaldehyde condensate, 2-4 parts of titanium dioxide, 5-10 parts of polyoxypropylene ethylene oxide glycerol ether, 4-6 parts of anhydrous magnesium chloride powder, 3-5 parts of citric acid monohydrate, 12-14 parts of potassium cinnamate, 7-9 parts of sodium diacetate, 10-14 parts of sepiolite, 16-20 parts of ion exchange resin and 10-13 parts of calcium carbonate in a pressure mixing container, wherein the temperature in the pressure mixing container is between-10 ℃ and-20 ℃, and the pressure is 1.0-2.0MPa to prepare the assistant, storing at-15 deg.C to-20 deg.C;
s3, on the basis of S2, mixing 3-6 parts of myristyl decaglycerol, 5-8 parts of sodium tripolyphosphate, 2-5 parts of sodium polyacrylate, 4-9 parts of sodium dodecyl benzene sulfonate, 10-12 parts of polymaleic acid (HPMA), 3-7 parts of zinc salt, 5-12 parts of maltodextrin, 5-10 parts of N, N' -dinitrosopentamethylenetetramine, 5-10 parts of azodicarbonamide, 3-4 parts of N, N-dimethylcyclohexylamine, 6-8 parts of Polyacrylamide (PAM), 15-20 parts of hydroxyethyl cellulose, 8-16 parts of sodium carboxymethyl cellulose, 13-20 parts of naphthalene sulfonate formaldehyde condensate and 3-6 parts of auxiliary agent uniformly in a pressure mixing container at the temperature of-10 ℃ to-20 ℃, the pressure intensity is 1.0-2.0 MPa;
s4, after uniformly mixing the raw materials based on S3, gradually reducing the pressure in the pressure mixing container to the normal pressure within 2 hours, and continuously stirring and keeping the temperature constant in the pressure reduction process;
s5, on the basis of S4, the temperature in the pressure mixing container is gradually increased to the normal temperature within 1 hour, and the stirring is continuously carried out in the temperature increasing process;
and S6, on the basis of S5, stopping stirring after the temperature and the pressure in the pressure mixing container return to normal temperature and normal pressure, and thus obtaining the water reducing agent.
4. The method for preparing the high-efficiency water reducing agent for the high-strength concrete according to claim 3, wherein the low-temperature crushing and grinding process, the auxiliary agent mixing process and the water reducing agent mixing process are completed in different chambers of the same pressure mixing container.
5. A pressure mixing container, which is specially used for the preparation method of claim 4, the pressure mixing container comprises a cylindrical shell (1), a first partition (2) and a second partition (3) which are horizontally arranged and arranged at intervals are arranged in the shell (1), the first partition (2) and the second partition (3) divide the interior of the shell (1) into a freezing chamber (4), a crushing chamber (5) and a mixing chamber (6) from top to bottom in sequence, a plurality of freezing units are arranged in the freezing chamber (4), the freezing units are used for freezing liquid materials into solid materials, a plurality of crushing units are arranged in the crushing chamber (5), the materials enter the crushing units from the freezing units and are crushed by the crushing units, a dividing mechanism and a mixing mechanism (33) are arranged in the mixing chamber (6), the dividing mechanism is used for dividing the mixing chamber (6) into at least two independent mixing chambers (61), the mixing chambers (61) are communicated to form a mixing bin (6), the mixing mechanisms (33) are respectively positioned in the mixing chambers (61) and used for mixing materials, the materials enter the mixing bin (6) from the crushing chamber (5) to be mixed, and the bottom of the mixing bin (6) is of an arc-shaped structure (62); the top of the shell (1) is provided with liquid feed ports (7) which are in one-to-one correspondence with the freezing units, the middle part of the shell (1) is provided with a solid feed port (8) communicated with the mixing bin (6), and the bottom of the shell (1) is provided with a discharge port (9) communicated with the mixing bin (6); the center of casing (1) is equipped with pipeline (10) that are used for carrying low temperature nitrogen gas, and this pipeline (10) all is equipped with gas outlet (11) in freezer (4), crushing room (5) and mixing storehouse (6), still is equipped with nitrogen gas export (12) in freezer (4), crushing room (5) and mixing storehouse (6).
6. A pressure mixing vessel according to claim 5 wherein: the freezing unit comprises enclosing plates (13), a circular ring rotating seat (14), a rotating ring (15), nuts (16), a vertical rod (17), a fixing ring (18), a screw rod (19), a limiting ring (20), a first motor (22) and gears (23), a through hole used for communicating a freezing chamber (4) and a crushing chamber (5) is formed in the first isolating plate (2), the enclosing plates (13) are arranged on the upper surface of the first isolating plate (2) and located at the edges of the through hole, and gaps (131) are formed between the enclosing plates (13); a circular ring rotating seat (14) is fixedly arranged on the lower surface of the first partition plate (2), a rotating ring (15) is rotatably arranged on the inner side of the circular ring rotating seat (14), a plurality of nuts (16) are rotatably arranged on the outer circumference of the circular ring rotating seat (14), gear teeth are arranged on the outer circumference of each nut (16), and the gear teeth are meshed with gear teeth arranged on the outer circumference of the rotating ring (15); a plurality of upright rods (17) are vertically arranged on the rotating ring (15), the upright rods (17) are uniformly arranged along the circumference of the rotating ring (15) and are positioned in the through holes, and the tops of the upright rods (17) are fixedly arranged on the fixing ring (18); the nut (16) is provided with a screw rod (19), the upper end of the screw rod (19) penetrates through the first partition plate (2), the tops of the screw rods (19) are fixedly connected with limit rings (20), and the limit rings (20) are rotatably connected with the fixing ring (18); a first motor (22) is further installed on the first partition plate (2), and a gear (23) meshed with gear teeth on the nut (16) is installed on a rotating shaft of the first motor (22);
the outside of casing (1) is equipped with storage box (24), and the rolling epaxial rolling in storage box (24) has strap (25), and the free end of strap (25) passes clearance (131) spiral winding between bounding wall (13) on a plurality of pole settings (17), and the top at pole setting (17) is fixed to the free end of strap (25).
7. A pressure mixing vessel according to claim 5 wherein: the crushing unit comprises an isolation barrel (26), the isolation barrel (26) and a through hole in the first partition plate (2) are coaxially arranged, the isolation barrel (26) is positioned on the inner side of a circle formed by enclosing a plurality of vertical rods (17), the bottom of the isolation barrel (26) is fixed on the second partition plate (3), the through hole which is the same as that in the first partition plate (2) is formed in the second partition plate (3), an electromagnetic valve is arranged in the through hole in the second partition plate (3), and the PLC controls the opening of the electromagnetic valve so as to control crushed materials to enter the mixing chamber (61);
a crushing motor (27), a crushing shaft (28) and a crushing disc (29) are arranged in the isolation barrel (26), the crushing disc (29) and the crushing shaft (28) are sequentially fixed on a rotating shaft of the crushing motor (27) from top to bottom, and crushing blades are fixed on the crushing shaft (28); the crushing disc (29) is provided with a blanking hole (291), and the upper surface of the crushing disc (29) is provided with crushing teeth (292) for primarily crushing frozen solid materials.
8. A pressure mixing vessel according to claim 7, wherein: before adding the liquid or paste material, a layer of paper is laid on the surface of the crushing disc (29) to prevent the liquid or paste material from flowing out of the blanking hole (291).
9. A pressure mixing vessel according to claim 5 wherein: the cutting mechanism comprises a first baffle (30) fixed on the lower surface of the second baffle (3), a first electric push rod (31) fixed on the first baffle (30), and a second baffle (32) fixed on the first electric push rod (31), the PLC controller controls the first electric push rod (31) to stretch and retract so as to control the second baffle (32) to stretch, when the second baffle (32) extends out, the second baffle (32) and the first baffle (30) cut the mixing bin (6) into independent mixing chambers (61), and independent mixing of materials is achieved; when the second baffle (32) retracts, the second baffle (32) and the first baffle (30) communicate each mixing chamber (61) to form a large mixing bin (6), and then the final mixing of materials is realized; the mixing mechanism (33) is obliquely arranged at the bottom of the mixing bin (6).
10. A pressure mixing vessel according to claim 5 wherein: all install temperature PLC controller, manometer and the electromagnetism pressure joint of being connected with the PLC controller electricity in freezer (4), crushing room (5) and mixing storehouse (6), the electromagnetism pressure joint is connected with the overhead tank, can control the pressure in freezer (4), crushing room (5) and mixing storehouse (6) through the electromagnetism pressure joint.
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| CN111533484A (en) * | 2020-05-08 | 2020-08-14 | 李明 | Slump-retaining type polycarboxylate superplasticizer capable of reducing concrete shrinkage and having strong adaptability to cement |
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