CN113651552A - Polycarboxylic acid high-performance pumping agent and production process and preparation device thereof - Google Patents
Polycarboxylic acid high-performance pumping agent and production process and preparation device thereof Download PDFInfo
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- CN113651552A CN113651552A CN202111090796.0A CN202111090796A CN113651552A CN 113651552 A CN113651552 A CN 113651552A CN 202111090796 A CN202111090796 A CN 202111090796A CN 113651552 A CN113651552 A CN 113651552A
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- polycarboxylic acid
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- mother liquor
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- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 116
- 239000002253 acid Substances 0.000 title claims abstract description 89
- 238000005086 pumping Methods 0.000 title claims abstract description 50
- 238000004519 manufacturing process Methods 0.000 title abstract description 20
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000012452 mother liquor Substances 0.000 claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 239000004034 viscosity adjusting agent Substances 0.000 claims abstract description 21
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 14
- 238000007710 freezing Methods 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 38
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 24
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 23
- 239000000243 solution Substances 0.000 claims description 21
- -1 polyoxypropylene Polymers 0.000 claims description 19
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 18
- 239000008367 deionised water Substances 0.000 claims description 18
- 229910021641 deionized water Inorganic materials 0.000 claims description 18
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 18
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 18
- 238000013329 compounding Methods 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 16
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 15
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 12
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 12
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 12
- QZPSOSOOLFHYRR-UHFFFAOYSA-N 3-hydroxypropyl prop-2-enoate Chemical compound OCCCOC(=O)C=C QZPSOSOOLFHYRR-UHFFFAOYSA-N 0.000 claims description 12
- ZZZCUOFIHGPKAK-UHFFFAOYSA-N D-erythro-ascorbic acid Natural products OCC1OC(=O)C(O)=C1O ZZZCUOFIHGPKAK-UHFFFAOYSA-N 0.000 claims description 12
- 229930003268 Vitamin C Natural products 0.000 claims description 12
- 235000019154 vitamin C Nutrition 0.000 claims description 12
- 239000011718 vitamin C Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 9
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 229920001451 polypropylene glycol Polymers 0.000 claims description 9
- 239000000600 sorbitol Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000017525 heat dissipation Effects 0.000 claims description 7
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims description 6
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 6
- 229930006000 Sucrose Natural products 0.000 claims description 6
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 6
- 239000010413 mother solution Substances 0.000 claims description 6
- 239000000176 sodium gluconate Substances 0.000 claims description 6
- 229940005574 sodium gluconate Drugs 0.000 claims description 6
- 235000012207 sodium gluconate Nutrition 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000005273 aeration Methods 0.000 claims description 4
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- 235000010410 calcium alginate Nutrition 0.000 claims description 3
- 239000000648 calcium alginate Substances 0.000 claims description 3
- 229960002681 calcium alginate Drugs 0.000 claims description 3
- OKHHGHGGPDJQHR-YMOPUZKJSA-L calcium;(2s,3s,4s,5s,6r)-6-[(2r,3s,4r,5s,6r)-2-carboxy-6-[(2r,3s,4r,5s,6r)-2-carboxylato-4,5,6-trihydroxyoxan-3-yl]oxy-4,5-dihydroxyoxan-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylate Chemical compound [Ca+2].O[C@@H]1[C@H](O)[C@H](O)O[C@@H](C([O-])=O)[C@H]1O[C@H]1[C@@H](O)[C@@H](O)[C@H](O[C@H]2[C@H]([C@@H](O)[C@H](O)[C@H](O2)C([O-])=O)O)[C@H](C(O)=O)O1 OKHHGHGGPDJQHR-YMOPUZKJSA-L 0.000 claims description 3
- 229920003086 cellulose ether Polymers 0.000 claims description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 235000010413 sodium alginate Nutrition 0.000 claims description 3
- 239000000661 sodium alginate Substances 0.000 claims description 3
- 229940005550 sodium alginate Drugs 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 239000000230 xanthan gum Substances 0.000 claims description 3
- 235000010493 xanthan gum Nutrition 0.000 claims description 3
- 229920001285 xanthan gum Polymers 0.000 claims description 3
- 229940082509 xanthan gum Drugs 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 229920002545 silicone oil Polymers 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 239000004567 concrete Substances 0.000 abstract description 29
- 230000000694 effects Effects 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 3
- 230000000979 retarding effect Effects 0.000 abstract description 3
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 239000006260 foam Substances 0.000 description 4
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical class O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 description 4
- 239000004574 high-performance concrete Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 241000931143 Gleditsia sinensis Species 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000006286 aqueous extract Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- C04B2103/20—Retarders
- C04B2103/22—Set retarders
-
- 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
Abstract
The invention relates to the technical field of concrete admixtures, in particular to a polycarboxylic acid high-performance pumping aid, a production process and a preparation device thereof, wherein the polycarboxylic acid high-performance pumping aid comprises the following raw materials in parts by mass: 30-35 parts of polycarboxylic acid mother liquor, 3-5 parts of slow release agent, 0.6-0.8 part of high-performance viscosity modifier, 0.6-0.8 part of anti-mud agent, 0.1-0.3 part of air entraining agent, 0.1-0.3 part of anti-freezing agent, 0.3-0.5 part of water-retaining agent, 0.1-0.3 part of defoaming agent and 20-40 parts of water. According to the polycarboxylic acid high-performance pumping aid provided by the invention, the components have synergistic effect, so that the prepared polycarboxylic acid high-performance pumping aid is good in flowing property, good in pumping effect and good in water reducing and retarding performance, and can effectively control the slump loss of concrete; the production process of the polycarboxylic acid high-performance pumping aid provided by the invention is simple, convenient to construct, low in preparation cost, high in production efficiency and high in popularization and application value, and special equipment is not required.
Description
Technical Field
The invention relates to the technical field of concrete admixtures, in particular to a polycarboxylic acid high-performance pumping aid, a production process and a preparation device thereof.
Background
The polycarboxylic acid water reducing agent has the advantages of environmental protection, high water reducing rate, small slump loss and the like, is an indispensable component in high-performance concrete, and is a hot field for researching concrete admixtures. Due to the obvious progress of concrete technology and design method, the requirements on the water reducing rate and the cement adaptability of the additive are continuously improved, and especially the development of high-strength, high-fluidity and high-performance concrete puts higher requirements on the additive.
The patent with the application number of CN00119482.8 discloses a pumping agent for high-performance concrete and a process thereof, wherein the pumping agent comprises the following specific components: the modified naphthalene sulfonic acid formaldehyde condensate, the calcium chloride hexose, the methylcellulose, the gleditsia sinensis aqueous extract, the sodium sulfate and the water are prepared by compounding the modified naphthalene sulfonic acid formaldehyde condensate and the pumping agent, so that the modified naphthalene sulfonic acid formaldehyde condensate has the effects of reducing water, preventing collapse, assisting a pump, retarding coagulation and the like, is low in cost, can be widely applied to the production of commercial concrete and commercial mortar, and is particularly suitable for manufacturing high-flow high-strength concrete with high grade, self-advection and the like.
However, the pumping aid for high-performance concrete and the process thereof are added with the modified naphthalenesulfonic acid-formaldehyde condensate component, so that the pumping aid is poor in environmental protection, high in price and poor in pumping effect.
Therefore, a polycarboxylic acid high-performance pumping agent, a production process and a preparation device thereof are provided.
Disclosure of Invention
The invention aims to provide a polycarboxylic acid high-performance pumping agent and a production process thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a polycarboxylic acid high-performance pumping agent comprises the following raw materials in parts by mass: 30-35 parts of polycarboxylic acid mother liquor, 3-5 parts of slow release agent, 0.6-0.8 part of high-performance viscosity modifier, 0.6-0.8 part of anti-mud agent, 0.1-0.3 part of air entraining agent, 0.1-0.3 part of anti-freezing agent, 0.3-0.5 part of water-retaining agent, 0.1-0.3 part of defoaming agent and 20-40 parts of water;
the polycarboxylic acid mother liquor comprises water-reducing polycarboxylic acid mother liquor and slump retaining polycarboxylic acid mother liquor, the water-reducing polycarboxylic acid mother liquor comprises allyl polyoxyethylene ether, sorbitol, acrylic acid, hydroxyethyl acrylate, hydroxypropyl acrylate, hydrogen peroxide, vitamin C, thioglycolic acid and deionized water, and the slump retaining polycarboxylic acid mother liquor comprises methyl alkenyl polyoxyethylene ether polyoxypropylene ether, acrylic acid, hydroxyethyl acrylate, hydroxypropyl acrylate, hydrogen peroxide, vitamin C, thioglycolic acid and deionized water.
Preferably, the solid content of the polycarboxylic acid mother liquor is 35-40%.
The polycarboxylic acid mother liquor is used for reducing the slump of concrete and improving the fluidity of the concrete.
Preferably, the slow release agent consists of sodium gluconate and white sugar, and the mass ratio of the sodium gluconate to the white sugar is 1: 1.
The slow release agent is used for delaying the initial setting time and the final setting time of the concrete and inhibiting the hydration speed of the concrete.
Preferably, the defoaming agent is one of silicone emulsion, polyoxyethylene glyceryl ether and polydimethylsiloxane.
The function of the defoaming agent is to eliminate foam in concrete and prevent the formation of foam.
Preferably, the high-performance viscosity modifier is one or a combination of cellulose ether, xanthan gum and citric gum.
The high performance viscosity modifier is arranged to change the rheological property of the concrete and reduce the problem of blockage.
Preferably, the air-entraining agent is polyether air-entraining agent.
The air entraining agent is arranged to improve the slump, the fluidity and the plasticity of the concrete and improve the homogeneity and the breaking strength of the concrete.
Preferably, the water-retaining agent is a composition of two or three of polyoxyethylene, sodium alginate and calcium alginate.
The effect of this setting water-retaining agent has the water retention function, can reduce the concrete and lose water.
The invention also provides a production process of the polycarboxylic acid high-performance pumping aid, which specifically comprises the following steps:
s1, preparing water-reducing polycarboxylic acid mother liquor:
s101, adding deionized water, sorbitol and allyl polyoxyethylene ether into a reaction kettle, and stirring at the temperature of 70-75 ℃ to dissolve the allyl polyoxyethylene ether and the sorbitol into water;
s102, adding hydrogen peroxide into the reaction kettle, and stirring for 8-12 minutes;
s103, respectively dripping vitamin C, thioglycollic acid, acrylic acid, hydroxyethyl acrylate and hydroxypropyl acrylate, and controlling to be dripped into the reaction kettle within 4-4.5 hours;
s104, keeping the temperature for 1-3 hours in the reaction, and cooling to below 40 ℃;
s105, adjusting the pH value to 5-6 by using ion membrane alkali, and adjusting the solid content by using deionized water to obtain water-reduced polycarboxylic acid mother liquor with the solid content of 35%;
s2, preparing slump-retaining polycarboxylic acid mother liquor:
s201, adding deionized water and methyl alkenyl polyoxyethylene ether polyoxypropylene ether into a reaction kettle, and stirring at the temperature of 65-70 ℃ to dissolve the methyl alkenyl polyoxyethylene ether polyoxypropylene ether into water;
s202, adding hydrogen peroxide into the reaction kettle, and stirring for 5-10 minutes;
s203, respectively dripping vitamin C, thioglycollic acid, acrylic acid, hydroxyethyl acrylate and hydroxypropyl acrylate, and controlling to be dripped into the reaction kettle within 4-4.5 hours;
s204, keeping the temperature for 1-3 hours, and cooling to below 40 ℃;
s205, adjusting the pH value to 5-6 by using ionic membrane alkali, and adjusting the solid content by using deionized water to obtain slump retaining polycarboxylic acid mother liquor with the solid content of 40%;
s3, preparing an air entraining agent solution:
adding an air entraining agent and 1% of water into a container, and stirring to dissolve the air entraining agent in the water to obtain an air entraining agent solution;
s4, preparing a mixture:
s401, uniformly mixing a slow release agent, a high-performance viscosity modifier, an anti-mud agent, an antifreezing agent and a water-retaining agent on a flat plate;
s402, starting a stirring device of the compounding tank, adding the uniformly mixed slow release agent, high-performance viscosity modifier, anti-mud agent, anti-freezing agent and water-retaining agent into the compounding tank, and adding the remaining 99% of water into the compounding tank;
s403, after the slow release agent, the high-performance viscosity modifier, the anti-mud agent, the antifreezing agent and the water retention agent are completely dissolved in water, injecting the water-reducing polycarboxylic acid mother liquor prepared in the step S1, the slump-retaining polycarboxylic acid mother liquor prepared in the step S2 and a defoaming agent;
s404, uniformly mixing a slow release agent, a high-performance viscosity modifier, an anti-mud agent, an antifreezing agent, a water-retaining agent, a water-reducing polycarboxylic acid mother solution, a slump-retaining polycarboxylic acid mother solution and a defoaming agent in a tank to be compounded to obtain a mixture;
s5, preparing a polycarboxylic acid high-performance pumping agent:
and (4) adding the air-entraining agent solution prepared in the step (S3) into the compounding tank, uniformly mixing the air-entraining agent solution and the mixture prepared in the step (S4), and finally stopping a stirring device of the compounding tank to obtain the polycarboxylic acid high-performance pumping aid.
Compared with the prior art, the invention has the beneficial effects that:
1. the polycarboxylic acid high-performance pumping aid provided by the invention has the advantages that the components have synergistic effect, so that the prepared polycarboxylic acid high-performance pumping aid has good flowing property, good pumping effect and good water reducing and retarding performance, can effectively control concrete slump loss, is high in durability, stable in quality and environment-friendly, and overcomes the defects that the existing commercially available concrete pumping aid is poor in adaptability, poor in flowability, extremely unstable in quality and fast in slump loss, and seriously affects various projects of concrete;
2. the production process of the polycarboxylic acid high-performance pumping aid provided by the invention is simple, convenient to construct, low in preparation cost, high in production efficiency and high in popularization and application value, and special equipment is not required.
Drawings
FIG. 1 is a schematic flow diagram of the production process of the present invention;
FIG. 2 is a schematic flow diagram of the present invention for preparing a water-reduced polycarboxylic acid mother liquor;
FIG. 3 is a schematic flow chart of the preparation of slump-retaining polycarboxylic acid mother liquor according to the present invention;
FIG. 4 is a schematic flow diagram of the present invention for preparing a mixture;
FIG. 5 is a sectional view of a manufacturing apparatus of the present invention;
FIG. 6 is a schematic view of the structure of an inner vessel of the manufacturing apparatus of the present invention;
FIG. 7 is a sectional view of a heating chamber of the manufacturing apparatus of the present invention.
In the figure: 100. a reaction kettle; 101. an inner tank; 102. an outer tank; 103. a heating cavity; 1031. heating a tube; 1032. heat conducting oil; 104. a cooling chamber; 1041. a water inlet; 1042. a water outlet; 105. an aeration valve; 106. a temperature sensor; 107. a control device; 1071. a touch display screen; 108. a filling pipe; 1081. a material storage hopper; 1082. a flow valve; 109. an alarm device; 110. heat dissipation holes; 111. a cooling fan; 112. a first mother liquor tank; 113. a second mother liquor tank; 114. a solution tank; 115. a connecting pipe; 200. a compounding tank; 201. a transmission device; 202. a stirring device; 203. a feed inlet; 204. and (4) a discharge port.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a polycarboxylic acid high-performance pumping agent comprises the following raw materials in parts by mass: 30-35 parts of polycarboxylic acid mother liquor, 3-5 parts of slow release agent, 0.6-0.8 part of high-performance viscosity modifier, 0.6-0.8 part of anti-mud agent, 0.1-0.3 part of air entraining agent, 0.1-0.3 part of anti-freezing agent, 0.3-0.5 part of water-retaining agent, 0.1-0.3 part of defoaming agent and 20-40 parts of water. The slow release agent consists of sodium gluconate and white sugar, the mass ratio of the sodium gluconate to the white sugar is 1:1, the initial setting time and the final setting time of the concrete are delayed through the slow release agent, and the hydration speed of the concrete is inhibited. The defoaming agent is one of emulsified silicone oil, polyoxyethylene glyceryl ether and polydimethylsiloxane, and is used for eliminating foam in concrete and preventing foam from forming. The high-performance viscosity modifier is one or a composition of more of cellulose ether, xanthan gum and citric gum, and the rheological property of the concrete is changed through the high-performance viscosity modifier, so that the problem of blockage is reduced. The air entraining agent is polyether air entraining agent, and can improve the slump, the flowability and the plasticity of the concrete and improve the homogeneity and the breaking strength of the concrete. The water-retaining agent is a composition of two or three of polyoxyethylene, sodium alginate and calcium alginate, and the water-retaining agent has a water-retaining function and can reduce the water loss of concrete.
The polycarboxylic acid mother liquor comprises water-reducing polycarboxylic acid mother liquor and slump-retaining polycarboxylic acid mother liquor, the solid content of the polycarboxylic acid mother liquor is 35-40%, the water-reducing polycarboxylic acid mother liquor comprises allyl polyoxyethylene ether, sorbitol, acrylic acid, hydroxyethyl acrylate, hydroxypropyl acrylate, hydrogen peroxide, vitamin C, thioglycollic acid and deionized water, and the slump-retaining polycarboxylic acid mother liquor comprises methyl alkenyl polyoxyethylene ether polyoxypropylene ether, acrylic acid, hydroxyethyl acrylate, hydroxypropyl acrylate, hydrogen peroxide, vitamin C, thioglycollic acid and deionized water. The super-long slump retaining of the concrete is realized through the water-reducing polycarboxylic acid mother liquor and the slump retaining polycarboxylic acid mother liquor, and the possibility is provided for long pumping of a construction site or a pumping pipeline.
The invention also provides a production process of the polycarboxylic acid high-performance pumping aid, which specifically comprises the following steps:
s1, preparing water-reducing polycarboxylic acid mother liquor:
s101, adding deionized water, sorbitol and allyl polyoxyethylene ether into a reaction kettle, and stirring at the temperature of 70-75 ℃ to dissolve the allyl polyoxyethylene ether and the sorbitol into water;
s102, adding hydrogen peroxide into the reaction kettle, and stirring for 8-12 minutes;
s103, respectively dripping vitamin C, thioglycollic acid, acrylic acid, hydroxyethyl acrylate and hydroxypropyl acrylate, and controlling to be dripped into the reaction kettle within 4-4.5 hours;
s104, keeping the temperature for 1-3 hours in the reaction, and cooling to below 40 ℃;
s105, adjusting the pH value to 5-6 by using ion membrane alkali, and adjusting the solid content by using deionized water to obtain water-reduced polycarboxylic acid mother liquor with the solid content of 35%;
s2, preparing slump-retaining polycarboxylic acid mother liquor:
s201, adding deionized water and methyl alkenyl polyoxyethylene ether polyoxypropylene ether into a reaction kettle, and stirring at the temperature of 65-70 ℃ to dissolve the methyl alkenyl polyoxyethylene ether polyoxypropylene ether into water;
s202, adding hydrogen peroxide into the reaction kettle, and stirring for 5-10 minutes;
s203, respectively dripping vitamin C, thioglycollic acid, acrylic acid, hydroxyethyl acrylate and hydroxypropyl acrylate, and controlling to be dripped into the reaction kettle within 4-4.5 hours;
s204, keeping the temperature for 1-3 hours, and cooling to below 40 ℃;
s205, adjusting the pH value to 5-6 by using ionic membrane alkali, and adjusting the solid content by using deionized water to obtain slump retaining polycarboxylic acid mother liquor with the solid content of 40%;
s3, preparing an air entraining agent solution:
adding an air entraining agent and 1% of water into a container, and stirring to dissolve the air entraining agent in the water to obtain an air entraining agent solution;
s4, preparing a mixture:
s401, uniformly mixing a slow release agent, a high-performance viscosity modifier, an anti-mud agent, an antifreezing agent and a water-retaining agent on a flat plate;
s402, starting a stirring device of the compounding tank, adding the uniformly mixed slow release agent, high-performance viscosity modifier, anti-mud agent, anti-freezing agent and water-retaining agent into the compounding tank, and adding the remaining 99% of water into the compounding tank;
s403, after the slow release agent, the high-performance viscosity modifier, the anti-mud agent, the antifreezing agent and the water retention agent are completely dissolved in water, injecting the water-reducing polycarboxylic acid mother liquor prepared in the step S1, the slump-retaining polycarboxylic acid mother liquor prepared in the step S2 and a defoaming agent;
s404, uniformly mixing a slow release agent, a high-performance viscosity modifier, an anti-mud agent, an antifreezing agent, a water-retaining agent, a water-reducing polycarboxylic acid mother solution, a slump-retaining polycarboxylic acid mother solution and a defoaming agent in a tank to be compounded to obtain a mixture;
s5, preparing a polycarboxylic acid high-performance pumping agent:
and (4) adding the air-entraining agent solution prepared in the step (S3) into the compounding tank, uniformly mixing the air-entraining agent solution and the mixture prepared in the step (S4), and finally stopping a stirring device of the compounding tank to obtain the polycarboxylic acid high-performance pumping aid.
The invention also provides a preparation device of the polycarboxylic acid high-performance pumping agent, which comprises a reaction kettle 100 and a compound tank 200 fixed at the bottom of the reaction kettle 100, wherein the reaction kettle 100 comprises an inner tank 101 and an outer tank 102, the outer surface of the inner tank 101 is spirally wound with a heating cavity 103 and a cooling cavity 104, a heating pipe 1031 is fixed in the heating cavity 103 and is filled with heat conduction oil 1032, one end of the cooling cavity 104 is provided with a water inlet 1041 and the other end is provided with a water outlet 1042, the bottom of the inner tank 101 is provided with an aeration valve 105 and a temperature sensor 106, one side of the outer tank 102 is provided with a control device 107, one side of the top of the reaction kettle 100 is fixed with a filling pipe 108, the top of the filling pipe 108 is fixed with a storage hopper 1081, the middle part of the filling pipe is provided with a flow valve 1082, the other side of the top of the reaction kettle 100 is fixed with an alarm device 109, the center of the top of the reaction kettle 100 is provided with a heat dissipation hole 110, the heat dissipation hole 110, the top of reation kettle 100 is fixed with cooling fan 111 with the heat dissipation hole 110 department of correspondence, reation kettle 100's bottom in proper order through-connection and first mother liquor jar 112, second mother liquor jar 113 and solution tank 114, the inlet department of first mother liquor jar 112, second mother liquor jar 113 and solution tank 114 all is equipped with the solenoid valve, the bottom of first mother liquor jar 112, second mother liquor jar 113 and solution tank 114 is connected with the tank 200 of reassembling through connecting pipe 115 respectively, the top center department of the tank 200 of reassembling is fixed with transmission 201, be equipped with the agitating unit 202 who is connected with transmission 201 pivot in the tank 200 of reassembling, top one side of the tank 200 of reassembling is equipped with feed inlet 203, and the center department of bottom is equipped with discharge gate 204.
Specifically, a touch display screen 1071 is disposed on the surface of the control device 107, and the control device 107 is electrically connected to the heating pipe 1031, the aeration valve 105, the temperature sensor 106, the flow valve 1082, the alarm device 109, the cooling fan 111, and the transmission device 201, respectively.
In conclusion, compared with the prior art, the polycarboxylic acid high-performance pumping aid provided by the invention has the advantages that the components have synergistic effect, so that the prepared polycarboxylic acid high-performance pumping aid has good flowing property, good pumping effect and good water-reducing and slow-setting properties, can effectively control the slump loss of concrete, is high in durability, stable in quality and environment-friendly in product, and overcomes the defects that the existing concrete pumping aid sold on the market is poor in adaptability, poor in fluidity, extremely unstable in quality, rapid in slump loss and seriously affects various projects of concrete; the production process of the polycarboxylic acid high-performance pumping aid provided by the invention is simple, convenient to construct, low in preparation cost, high in production efficiency and high in popularization and application value, and special equipment is not required.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A polycarboxylic acid high-performance pumping aid, characterized in that: the material comprises the following components in parts by mass: 30-35 parts of polycarboxylic acid mother liquor, 3-5 parts of slow release agent, 0.6-0.8 part of high-performance viscosity modifier, 0.6-0.8 part of anti-mud agent, 0.1-0.3 part of air entraining agent, 0.1-0.3 part of anti-freezing agent, 0.3-0.5 part of water-retaining agent, 0.1-0.3 part of defoaming agent and 20-40 parts of water;
the polycarboxylic acid mother liquor comprises water-reducing polycarboxylic acid mother liquor and slump retaining polycarboxylic acid mother liquor, the water-reducing polycarboxylic acid mother liquor comprises allyl polyoxyethylene ether, sorbitol, acrylic acid, hydroxyethyl acrylate, hydroxypropyl acrylate, hydrogen peroxide, vitamin C, thioglycolic acid and deionized water, and the slump retaining polycarboxylic acid mother liquor comprises methyl alkenyl polyoxyethylene ether polyoxypropylene ether, acrylic acid, hydroxyethyl acrylate, hydroxypropyl acrylate, hydrogen peroxide, vitamin C, thioglycolic acid and deionized water.
2. The polycarboxylic acid high-performance pumping aid according to claim 1, wherein: the solid content of the polycarboxylic acid mother liquor is 35-40%.
3. The polycarboxylic acid high-performance pumping aid according to claim 1, wherein: the slow release agent is composed of sodium gluconate and white sugar, and the mass ratio of the sodium gluconate to the white sugar is 1: 1.
4. The polycarboxylic acid high-performance pumping aid according to claim 1, wherein: the defoaming agent is one of emulsified silicone oil, polyoxyethylene glyceryl ether and polydimethylsiloxane.
5. The polycarboxylic acid high-performance pumping aid according to claim 1, wherein: the high-performance viscosity modifier is one or a composition of more of cellulose ether, xanthan gum and citric gum.
6. The polycarboxylic acid high-performance pumping aid according to claim 1, wherein: the air entraining agent is polyether air entraining agent.
7. The polycarboxylic acid high-performance pumping aid according to claim 1, wherein: the water-retaining agent is a composition of two or three of polyoxyethylene, sodium alginate and calcium alginate.
8. A process for producing a polycarboxylic acid high-performance pumping aid according to claim 1, characterized in that: the method specifically comprises the following steps:
s1, preparing water-reducing polycarboxylic acid mother liquor:
s101, adding deionized water, sorbitol and allyl polyoxyethylene ether into a reaction kettle, and stirring at the temperature of 70-75 ℃ to dissolve the allyl polyoxyethylene ether and the sorbitol into water;
s102, adding hydrogen peroxide into the reaction kettle, and stirring for 8-12 minutes;
s103, respectively dripping vitamin C, thioglycollic acid, acrylic acid, hydroxyethyl acrylate and hydroxypropyl acrylate, and controlling to be dripped into the reaction kettle within 4-4.5 hours;
s104, keeping the temperature for 1-3 hours in the reaction, and cooling to below 40 ℃;
s105, adjusting the pH value to 5-6 by using ion membrane alkali, and adjusting the solid content by using deionized water to obtain water-reduced polycarboxylic acid mother liquor with the solid content of 35%;
s2, preparing slump-retaining polycarboxylic acid mother liquor:
s201, adding deionized water and methyl alkenyl polyoxyethylene ether polyoxypropylene ether into a reaction kettle, and stirring at the temperature of 65-70 ℃ to dissolve the methyl alkenyl polyoxyethylene ether polyoxypropylene ether into water;
s202, adding hydrogen peroxide into the reaction kettle, and stirring for 5-10 minutes;
s203, respectively dripping vitamin C, thioglycollic acid, acrylic acid, hydroxyethyl acrylate and hydroxypropyl acrylate, and controlling to be dripped into the reaction kettle within 4-4.5 hours;
s204, keeping the temperature for 1-3 hours, and cooling to below 40 ℃;
s205, adjusting the pH value to 5-6 by using ionic membrane alkali, and adjusting the solid content by using deionized water to obtain slump retaining polycarboxylic acid mother liquor with the solid content of 40%;
s3, preparing an air entraining agent solution:
adding an air entraining agent and 1% of water into a container, and stirring to dissolve the air entraining agent in the water to obtain an air entraining agent solution;
s4, preparing a mixture:
s401, uniformly mixing a slow release agent, a high-performance viscosity modifier, an anti-mud agent, an antifreezing agent and a water-retaining agent on a flat plate;
s402, starting a stirring device of the compounding tank, adding the uniformly mixed slow release agent, high-performance viscosity modifier, anti-mud agent, anti-freezing agent and water-retaining agent into the compounding tank, and adding the remaining 99% of water into the compounding tank;
s403, after the slow release agent, the high-performance viscosity modifier, the anti-mud agent, the antifreezing agent and the water retention agent are completely dissolved in water, injecting the water-reducing polycarboxylic acid mother liquor prepared in the step S1, the slump-retaining polycarboxylic acid mother liquor prepared in the step S2 and a defoaming agent;
s404, uniformly mixing a slow release agent, a high-performance viscosity modifier, an anti-mud agent, an antifreezing agent, a water-retaining agent, a water-reducing polycarboxylic acid mother solution, a slump-retaining polycarboxylic acid mother solution and a defoaming agent in a tank to be compounded to obtain a mixture;
s5, preparing a polycarboxylic acid high-performance pumping agent:
and (4) adding the air-entraining agent solution prepared in the step (S3) into the compounding tank, uniformly mixing the air-entraining agent solution and the mixture prepared in the step (S4), and finally stopping a stirring device of the compounding tank to obtain the polycarboxylic acid high-performance pumping aid.
9. A device for preparing a polycarboxylic acid high-performance pumping aid according to claim 1, wherein: comprises a reaction kettle (100) and a compound tank (200) fixed at the bottom of the reaction kettle (100), wherein the reaction kettle (100) comprises an inner tank (101) and an outer tank (102), the outer surface of the inner tank (101) is spirally wound with a heating cavity (103) and a cooling cavity (104), the heating cavity (103) is internally fixed with a heating pipe (1031) and is filled with heat-conducting oil (1032), one end of the cooling cavity (104) is provided with a water inlet (1041) and the other end is provided with a water outlet (1042), the bottom of the inner tank (101) is provided with an aeration valve (105) and a temperature sensor (106), one side of the outer tank (102) is provided with a control device (107), one side of the top of the reaction kettle (100) is fixed with a filling pipe (108), the top of the reaction kettle (108) is fixed with a storage hopper (1081), the middle part of the reaction kettle is provided with a flow valve (1082), and the other side of the top of the reaction kettle (100) is fixed with an alarm device (109), the reaction kettle (100) is provided with a heat dissipation hole (110) in the center of the top, the heat dissipation hole (110) is provided with a cooling fan (111) at the position corresponding to the heat dissipation hole (110) at the top of the reaction kettle (100), the bottom of the reaction kettle (100) is sequentially connected with a first mother liquor tank (112), a second mother liquor tank (113) and a solution tank (114) in a through manner, electromagnetic valves are arranged at liquid inlets of the first mother liquor tank (112), the second mother liquor tank (113) and the solution tank (114), the bottoms of the first mother liquor tank (112), the second mother liquor tank (113) and the solution tank (114) are respectively connected with a re-distribution tank (200) through connecting pipes (115), a transmission device (201) is fixed at the center of the top of the re-distribution tank (200), a stirring device (202) connected with a rotating shaft of the transmission device (201) is arranged in the re-distribution tank (200), and a feeding hole (203) is arranged on one side of the top of the re-distribution tank (200), and a discharge hole (204) is arranged at the center of the bottom.
10. The apparatus for preparing polycarboxylic acid high-performance pumping aid according to claim 9, wherein: the surface of controlling means (107) is equipped with touch display screen (1071), controlling means (107) respectively with heating pipe (1031), exposure valve (105), temperature sensor (106), flow valve (1082), alarm device (109), cooling fan (111) and transmission (201) electric connection.
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