CN107698717A - A kind of preparation method of anti-mud polycarboxylate water-reducer - Google Patents
A kind of preparation method of anti-mud polycarboxylate water-reducer Download PDFInfo
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- CN107698717A CN107698717A CN201710545484.1A CN201710545484A CN107698717A CN 107698717 A CN107698717 A CN 107698717A CN 201710545484 A CN201710545484 A CN 201710545484A CN 107698717 A CN107698717 A CN 107698717A
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- reducer
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 229920005646 polycarboxylate Polymers 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000007864 aqueous solution Substances 0.000 claims abstract description 20
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000243 solution Substances 0.000 claims abstract description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 15
- 239000002253 acid Substances 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 13
- 238000009835 boiling Methods 0.000 claims abstract description 10
- 239000000178 monomer Substances 0.000 claims abstract description 10
- YHQXBTXEYZIYOV-UHFFFAOYSA-N 3-methylbut-1-ene Chemical group CC(C)C=C YHQXBTXEYZIYOV-UHFFFAOYSA-N 0.000 claims abstract description 8
- 150000007513 acids Chemical class 0.000 claims abstract description 8
- 239000003999 initiator Substances 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 229920001427 mPEG Polymers 0.000 claims abstract description 5
- 235000011121 sodium hydroxide Nutrition 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 5
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- DKIDEFUBRARXTE-UHFFFAOYSA-N 3-mercaptopropanoic acid Chemical compound OC(=O)CCS DKIDEFUBRARXTE-UHFFFAOYSA-N 0.000 claims description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 4
- 238000010792 warming Methods 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 3
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 3
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 3
- 235000019394 potassium persulphate Nutrition 0.000 claims description 3
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 claims description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 2
- 230000000977 initiatory effect Effects 0.000 claims description 2
- 239000012286 potassium permanganate Substances 0.000 claims description 2
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims 1
- 150000001336 alkenes Chemical class 0.000 claims 1
- 235000003642 hunger Nutrition 0.000 claims 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 claims 1
- 239000004927 clay Substances 0.000 abstract description 9
- 230000003467 diminishing effect Effects 0.000 abstract description 7
- 239000004576 sand Substances 0.000 abstract description 7
- 238000010348 incorporation Methods 0.000 abstract description 3
- 230000033228 biological regulation Effects 0.000 abstract description 2
- 125000000524 functional group Chemical group 0.000 abstract description 2
- 150000001735 carboxylic acids Chemical class 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 5
- 239000004568 cement Substances 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 239000002202 Polyethylene glycol Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 methoxyl group Chemical group 0.000 description 2
- 239000000366 soil substitute Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000004968 peroxymonosulfuric acids Chemical class 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-M sulfamate Chemical compound NS([O-])(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-M 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2641—Polyacrylates; Polymethacrylates
- C04B24/2647—Polyacrylates; Polymethacrylates containing polyether side chains
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2664—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of ethylenically unsaturated dicarboxylic acid polymers, e.g. maleic anhydride copolymers
- C04B24/267—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of ethylenically unsaturated dicarboxylic acid polymers, e.g. maleic anhydride copolymers containing polyether side chains
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
-
- 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
- C04B2103/0045—Polymers chosen for their physico-chemical characteristics
- C04B2103/0059—Graft (co-)polymers
-
- 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)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Macromonomer-Based Addition Polymer (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of preparation method of anti-mud polycarboxylate water-reducer, and methoxy poly (ethylene glycol) isopentene group ether is dissolved in into water and obtains water solution A, chain-transferring agent is dissolved in water and obtains aqueous solution B, and unsaturated acids and function monomer are dissolved in water and obtain aqueous solution C；Water solution A is added in four-hole boiling flask, and adds initiator, after stirring heating, while aqueous solution B and aqueous solution C is added dropwise into four-hole boiling flask, nertralizer liquid caustic soda regulation pH value of solution is added and obtains polycarboxylate water-reducer.The water reducer preparation method of the present invention is simple, in the preparation by introducing functional group, obtain being applied to aggregate clay content height, the simple poly carboxylic acid series water reducer of course of reaction, concrete can be made to keep preferable diminishing dispersibility, little loss of slump, can ensure that maturing has enough intensity；And aggregate need not be rinsed after present invention incorporation, the good grading of sand will not be damaged, remains the original performance of concrete, can be widelyd popularize and apply in ready-mixed concrete industry.
Description
Technical field
The present invention relates to a kind of preparation method of anti-mud polycarboxylate water-reducer, belong to concrete preparation field.
Background technology
In recent years, as the demand of Building class concrete is increasing, have to the additive that must be added in concrete
Very high requirement, especially the proposition of high intensity self-compaction environment-friendly concrete has more promoted concrete admixture court in recent years
Environmentally friendly, high diminishing, high-thin arch dam, the direction to concrete ground material better adaptability are developed.Polycarboxylate water-reducer because its volume is low,
The advantages that water-reducing rate is high, concrete contraction percentage is low, green and be widely used.However, substantial amounts of case history and research
Show, compared with the water reducers such as naphthalene system, fatty family and sulfamate system, clay content of the poly carboxylic acid series water reducer to aggregate
It is more sensitive, it is mainly shown as when clay content is big, the diminishing dispersibility degradation of poly carboxylic acid series water reducer, protects effect of collapsing
Fruit is poor, causes maturing intensity decreases etc., have impact on the quality and progress of engineering.This is due in concrete ground material
Soil has strong adsorption capacity, can adsorb diminishing agent molecule first, so as to hinder the diminishing of polycarboxylate water-reducer and guarantor to collapse
Effect.
In ready-mixed concrete actual production, when the clay content in aggregate be above standard regulation and significantly affect coagulation
It is general to solve problem using the dosage for rinsing aggregate or increasing polycarboxylate water-reducer during the quality of soil, but flushing can pollute ring
Border, the good grading for damaging sand, it is unfavorable for the ratio of mud of effectively control concrete；And poly carboxylic acid series water reducer is improved merely
Volume can not solve the problems such as water-reducing rate, slump retaining, can also increase construction cost, and this just have impact on poly carboxylic acid series water reducer
Use in ready-mixed concrete industry.
The content of the invention
In view of the above-mentioned problems of the prior art, it is an object of the invention to provide a kind of anti-mud polycarboxylate water-reducer
Preparation method, preparation method is simple to operation, and the water reducer being prepared is when mixing the high aggregate of clay content, Neng Goubao
Hold higher diminishing dispersibility, to protect effect of collapsing good, so as to ensure maturing intensity.
To achieve the above object, the technical solution adopted by the present invention is：A kind of preparation side of anti-mud polycarboxylate water-reducer
Method, comprise the following steps：
(1) in mass ratio 45:1.0~1.5:2.0~3.0：1.0~1.2:0.08~0.18 weighs the poly- second two of methoxyl group
Alcohol isopentene group ether, unsaturated acids, function monomer, initiator, chain-transferring agent；
(2) methoxy poly (ethylene glycol) isopentene group ether is dissolved in water and obtains water solution A, and chain-transferring agent is dissolved in water and is prepared
Aqueous solution B, unsaturated acids and function monomer are dissolved in water and obtain aqueous solution C；
(3) equipped with agitator, thermometer, Dropping feeder four-hole boiling flask in add water solution A, and add initiator,
After stirring is warming up to 45 DEG C of reaction temperature, while dropwise addition aqueous solution B and aqueous solution C, time for adding are respectively into four-hole boiling flask
4h and 3h, 1h is incubated after completion of dropwise addition；
(4) Temperature fall, it is 6~7 to add nertralizer liquid caustic soda and adjust solution to pH, obtains polycarboxylate water-reducer.
Preferably, the unsaturated acids in step (1) is the one or more in acrylic acid, methacrylic acid, maleic anhydride
Mix.
Preferably, the function monomer in step (1) is methylacryoyloxyethyl phosphate, polyfunctionality acidity propylene
Acid esters；One or more combination in glycolmethacrylate phosphate forms.
Preferably, the initiator in step (1) is ammonium persulfate, potassium peroxydisulfate, sodium peroxydisulfate, hydrogen peroxide, potassium permanganate
In one or more of compositions.
Preferably, the chain-transferring agent in step (1) is one kind in TGA, mercaptopropionic acid and lauryl mercaptan.
The water reducer preparation method of the present invention is simple, in the preparation by introducing functional group, has obtained being applied to aggregate
Clay content is high, the simple poly carboxylic acid series water reducer of course of reaction, and concrete can be made to keep preferable diminishing dispersibility, collapse
Degree of falling loss is small, can ensure that maturing has enough intensity；And aggregate need not be rinsed after present invention incorporation, will not
The good grading of sand is damaged, remains the original performance of concrete, to its wideling popularize with answering in ready-mixed concrete industry
With having very important significance.
Embodiment
The present invention is described in further detail below.
Embodiment 1
Preparation process：(1) following components is chosen in advance：Macromer methoxyl-polyethyleneglycol isopentene group ether 450g, chain turn
Move agent mercaptopropionic acid 10g, unsaturated acids acrylic acid 20g, function monomer methylacryoyloxyethyl phosphate 10g, initiator mistake
Ammonium sulfate 0.8g；
(2) macromer methoxyl-polyethyleneglycol isopentene group ether is dissolved in water and obtains water solution A, chain-transferring agent mercaptopropionic acid
It is dissolved in water and aqueous solution B is prepared, unsaturated acids acrylic acid and function monomer is dissolved in water and obtains aqueous solution C；
(3) equipped with agitator, thermometer, Dropping feeder four-hole boiling flask in add water solution A, and add initiator
Ammonium persulfate, after stirring is warming up to 45 DEG C of reaction temperature, while aqueous solution B and aqueous solution C is added dropwise into four-hole boiling flask, is added dropwise
Time is respectively 4h and 3h, and 1h is incubated after completion of dropwise addition；
(4) Temperature fall, it is 6 to add nertralizer liquid caustic soda and adjust solution to pH, obtains polycarboxylate water-reducer.
To examine anti-mud effect, the ordinary water-reducing agent produced to water reducer of the present invention and our company carries out cement paste stream
Dynamic degree and concrete test contrast, flowing degree of net paste of cement are tested according to national standard GB/T8077-2012《Concrete admixture is even
Matter test method》Carry out, soil substitutes the cement doping of respective quality according to inner blending method.Concrete performance examination is according to state
Mark GB/T50080-2016《Standard for test methods of properties of ordinary concrete mixture standard》Carry out, soil substitutes phase according to inner blending method
Answer sand (sand clay content is 0 after washing) admixture of quality.The specific data such as table 1 of flowing degree of net paste of cement test.
The water reducer flowing degree of net paste of cement of table 1 is tested
As seen from Table 1, in the case where being not added with soil, water reducer dispersibility of the invention and common is suitable；With mud
The increase of native content, the dispersibility of two kinds of water reducers reduce, but when soil content is identical, dispersion effect of the invention and
Fluidity holding capacity is substantially better than ordinary water-reducing agent, especially when soil content is 8%, behind 1 hour of ordinary water-reducing agent
Paste flowing degree without, but the present invention paste flowing degree also have 180mm.
Concrete test is carried out to the present invention, specific correction data is as shown in table 2.
The water reducer concrete test (grade strength C30) of table 2
As seen from Table 2, when sand clay content is 0, the dispersion effect and concrete slump of the present invention and ordinary water-reducing agent are protected
The compression strength of holding effect fruit and concrete is essentially identical, and volume is the same；With the increase of sand clay content, two kinds of water reducers
Dosage all increases, and intensity all decreases, but the increased ratio of dosage of the present invention will be less than the dosage of ordinary water-reducing agent, and
1 hour slump-loss of concrete is less than ordinary water-reducing agent, illustrates anti-mud effect clearly；And contrast 28d compression strength
It can be seen that concrete can keep higher intensity after the water reducer of the incorporation present invention.
Embodiment 2
Preparation process：(1) following components is chosen in advance：Macromer methoxyl-polyethyleneglycol isopentene group ether 450g, chain turn
Move agent lauryl mercaptan 15g, unsaturated acids maleic anhydride 30g, function monomer polyfunctionality acid acrylate 12g, initiation
Agent potassium peroxydisulfate 1.8g；
(2) methoxy poly (ethylene glycol) isopentene group ether is dissolved in water and obtains water solution A, and lauryl mercaptan is dissolved in water preparation
Aqueous solution B is obtained, maleic anhydride and polyfunctionality acid acrylate are dissolved in water and obtain aqueous solution C；
(3) equipped with agitator, thermometer, Dropping feeder four-hole boiling flask in add water solution A, and add persulfuric acid
Potassium, after stirring is warming up to 50 DEG C of reaction temperature, while aqueous solution B and aqueous solution C is added dropwise into four-hole boiling flask, time for adding point
Not Wei 4h and 3h, be incubated 1h after completion of dropwise addition；
(4) Temperature fall, it is 8 to add nertralizer liquid caustic soda and adjust solution to pH, obtains polycarboxylate water-reducer.
Experiment confirmation, water reducer manufactured in the present embodiment and embodiment 1 are similar in effect.
Claims (5)
1. a kind of preparation method of anti-mud polycarboxylate water-reducer, it is characterised in that comprise the following steps：
(1) in mass ratio 45:1.0~1.5:2.0~3.0：1.0~1.2:0.08~0.18 weighs methoxy poly (ethylene glycol) isoamyl
Alkene ether, unsaturated acids, function monomer, initiator, chain-transferring agent；
(2) methoxy poly (ethylene glycol) isopentene group ether is dissolved in water and obtains water solution A, and chain-transferring agent is dissolved in water and the aqueous solution is prepared
B, unsaturated acids and function monomer are dissolved in water and obtain aqueous solution C；
(3) equipped with agitator, thermometer, Dropping feeder four-hole boiling flask in add water solution A, and add initiator, stir
After being warming up to 45-50 DEG C of reaction temperature, while aqueous solution B and aqueous solution C is added dropwise into four-hole boiling flask, time for adding is respectively 4h
And 3h, it is incubated 1h after completion of dropwise addition；
(4) Temperature fall, it is 6~8 to add nertralizer liquid caustic soda and adjust solution to pH, obtains polycarboxylate water-reducer.
2. the preparation method of anti-mud polycarboxylate water-reducer according to claim 1, it is characterised in that the insatiable hunger of step (1)
Mixed with the sour one or more in acrylic acid, methacrylic acid, maleic anhydride.
3. the preparation method of anti-mud polycarboxylate water-reducer according to claim 1, it is characterised in that the function of step (1)
Monomer is methylacryoyloxyethyl phosphate, polyfunctionality acid acrylate；In glycolmethacrylate phosphate
One or more combination form.
4. the preparation method of anti-mud polycarboxylate water-reducer according to claim 1, it is characterised in that the initiation of step (1)
Agent is one or more of compositions in ammonium persulfate, potassium peroxydisulfate, sodium peroxydisulfate, hydrogen peroxide, potassium permanganate.
5. the preparation method of anti-mud polycarboxylate water-reducer according to claim 1, it is characterised in that the chain of step (1) turns
Shifting agent is one kind in TGA, mercaptopropionic acid and lauryl mercaptan.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710545484.1A CN107698717A (en) | 2017-07-06 | 2017-07-06 | A kind of preparation method of anti-mud polycarboxylate water-reducer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710545484.1A CN107698717A (en) | 2017-07-06 | 2017-07-06 | A kind of preparation method of anti-mud polycarboxylate water-reducer |
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| CN107698717A true CN107698717A (en) | 2018-02-16 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108659176A (en) * | 2018-06-06 | 2018-10-16 | 淮北旭日建材有限公司 | A kind of preparation method of modified polycarboxylic acid water-reducing agent |
| CN109593166A (en) * | 2018-11-28 | 2019-04-09 | 河南科之杰新材料有限公司 | A kind of anti-mud polycarboxylate water-reducer and preparation method thereof |
| CN109970923A (en) * | 2019-03-23 | 2019-07-05 | 杭州构建新型材料有限公司 | Water-reducing agent suitable for dry-method sand manufacturing concrete and preparation method thereof, application |
| CN110423312A (en) * | 2019-03-11 | 2019-11-08 | 中交二公局铁路工程有限公司 | A kind of low adsorption type high efficiency water reducing agent and preparation method thereof for the concrete containing porous aggregate |
| CN111592269A (en) * | 2019-02-21 | 2020-08-28 | 天水师范学院 | Method and device for synthesizing polycarboxylate superplasticizer through multi-copolymerization |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108659176A (en) * | 2018-06-06 | 2018-10-16 | 淮北旭日建材有限公司 | A kind of preparation method of modified polycarboxylic acid water-reducing agent |
| CN109593166A (en) * | 2018-11-28 | 2019-04-09 | 河南科之杰新材料有限公司 | A kind of anti-mud polycarboxylate water-reducer and preparation method thereof |
| CN111592269A (en) * | 2019-02-21 | 2020-08-28 | 天水师范学院 | Method and device for synthesizing polycarboxylate superplasticizer through multi-copolymerization |
| CN111592269B (en) * | 2019-02-21 | 2022-08-30 | 天水师范学院 | Method and device for synthesizing polycarboxylate superplasticizer through multi-copolymerization |
| CN110423312A (en) * | 2019-03-11 | 2019-11-08 | 中交二公局铁路工程有限公司 | A kind of low adsorption type high efficiency water reducing agent and preparation method thereof for the concrete containing porous aggregate |
| CN109970923A (en) * | 2019-03-23 | 2019-07-05 | 杭州构建新型材料有限公司 | Water-reducing agent suitable for dry-method sand manufacturing concrete and preparation method thereof, application |
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Application publication date: 20180216 |