CN106632891A - Polycarboxylate superplasticizer mother solution based on steam-cured concrete and preparation method of polycarboxylate superplasticizer mother solution - Google Patents
Polycarboxylate superplasticizer mother solution based on steam-cured concrete and preparation method of polycarboxylate superplasticizer mother solution Download PDFInfo
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- CN106632891A CN106632891A CN201611227401.6A CN201611227401A CN106632891A CN 106632891 A CN106632891 A CN 106632891A CN 201611227401 A CN201611227401 A CN 201611227401A CN 106632891 A CN106632891 A CN 106632891A
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- Prior art keywords
- steam
- polycarboxylate superplasticizer
- polyethylene glycol
- polymeric monomer
- superplasticizer mother
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Classifications
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- 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
- C04B24/16—Sulfur-containing compounds
- C04B24/161—Macromolecular compounds comprising sulfonate or sulfate groups
- C04B24/163—Macromolecular compounds comprising sulfonate or sulfate groups obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/165—Macromolecular compounds comprising sulfonate or sulfate groups obtained by reactions only involving carbon-to-carbon unsaturated bonds 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
- 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 provides a polycarboxylate superplasticizer mother solution based on steam-cured concrete and a preparation method of the polycarboxylate superplasticizer mother solution. The preparation method comprises steps as follows: polymeric macromonomers are mixed with water, a catalyst, a chain transfer agent and unsaturated small monomers and then react with the water, the catalyst, the chain transfer agent and the unsaturated small monomers, an alkaline solution is added for neutralization until pH value is 6-7, and the polycarboxylate superplasticizer mother solution is obtained, wherein the polymeric macromonomers comprise isopentenyl polyethylene glycol and allyl methyl-polyethylene glycol and the unsaturated small monomers comprise methacrylic acid, acrylic acid, acrylamide and sodium methallyl sulfonate. On the basis that excellent water-reducing property of an existing polycarboxylate superplasticizer is guaranteed, early strength of concrete is substantially improved, steam-curing time is shortened, and energy consumption and cost are reduced accordingly.
Description
Technical field
The present invention relates to technical field of concrete additives, more particularly to a kind of polycarboxylic acids diminishing based on steam-curing concrete
Agent mother liquor and preparation method thereof.
Background technology
Water reducer is at present research and a kind of most widely used concrete admixture, and additive becomes in concrete and removes
The 5th kind of important component part beyond cement, sand, stone, water.Polycarboxylic acids as water reducer of new generation, with volume it is low, protect and collapse
Performance is good, concrete contraction percentage is low, molecular structure adjustability is strong, simple production process and to environment it is friendly the advantages of.It is public
It is considered concrete admixture developing direction from now on.
In actual production, the maintenance of component in prefabricated components manufacturing enterprise is molded based on steam-cured, and steam curing will
The substantial amounts of energy is consumed, and at present component factory main energy sources are exactly, from coal burning, to give off substantial amounts of carbon dioxide and two
The harmful substances such as sulfur oxide, cause air pollution serious.In order to reduce energy resource consumption, the discharge of pernicious gas, steam-cured ring are reduced
Section will greatly reduce or even accomplish that zero is steam-cured, therefore, research one kind can shorten the steam-cured time, while also disclosure satisfy that intensity
The polycarboxylate water-reducer of the excellent performance of requirement has great economic benefit and social benefit.
The content of the invention
For the drawbacks described above and problem of prior art, it is an object of the invention to provide a kind of based on the poly- of steam-curing concrete
Carboxylic acid water reducer mother liquor and preparation method thereof.The polycarboxylate water-reducer of the present invention can increase substantially early age strength of concrete,
The steam-cured time is reduced, is solved in actual production to meet the intensity requirement of concrete, need the steam-cured link of long period,
Mass energy consumption is caused to pollute environment, and the technical problem for increasing cost.
In order to achieve the above object, the present invention provides following technical scheme：
A kind of polycarboxylate superplasticizer mother liquor based on steam-curing concrete, is by polymeric monomer and water, catalyst, the chain of being polymerized
React after transfer agent and unsaturated minor comonomer mixing, add what is obtained to after 6～7 with pH value in alkaline solution, the polymerization
Polymeric monomer includes isopentene group polyethylene glycol and methylpropenyl-polyethylene glycol；The unsaturated minor comonomer includes metering system
Acid, acrylic acid, acrylamide and methylpropene sodium sulfonate.
Further, the polymerization polymeric monomer is that isopentene group polyethylene glycol, methylpropenyl-polyethylene glycol and water exist
Under the catalytic action of catalyst, in mass ratio 0.8～1.1:1～1.2:0.8～1.0 preparation reaction is obtained.
Specifically, the polymerization polymeric monomer is to urge in isopentene group polyethylene glycol, methylpropenyl-polyethylene glycol and water
Under the catalytic action of agent, in mass ratio 1:1:1 preparation reaction is obtained.
Further, the unsaturated minor comonomer is by methacrylic acid, acrylic acid, acrylamide, methylpropene sodium sulfonate
With water in mass ratio 4～6:15～19:1:3～5:40 preparations are obtained.
Specifically, the unsaturated minor comonomer by methacrylic acid, acrylic acid, acrylamide, methylpropene sodium sulfonate and
Water in mass ratio 5:18:1:4:40 preparations are obtained.
Further, the weight average molecular weight of the isopentene group polyethylene glycol and methylpropenyl-polyethylene glycol is 1000
～5000.
Specifically, the weight average molecular weight of the isopentene group polyethylene glycol and methylpropenyl-polyethylene glycol is 2400.
Further, the reaction temperature of the mixed liquor of preparation polymerization polymeric monomer is in the range of 23～27 DEG C.
Further, the consumption of the catalyst in the polymerization polymeric monomer process for preparation is the 1.0 of polymerization polymeric monomer quality
～1.3%.
Specifically, the consumption of the catalyst in the polymerization polymeric monomer process for preparation is the 1.2% of polymerization polymeric monomer quality.
Further, the polymerization polymeric monomer for being obtained by preparation prepares the consumption of the catalyst during polycarboxylate water-reducer
The 1.0～1.3% of polymerization polymeric monomer quality；The consumption of the chain-transferring agent is the 0.4～0.5% of polymerization polymeric monomer quality；Institute
The consumption for stating unsaturated minor comonomer is the 15～19% of polymerization polymeric monomer quality.
Specifically, it is poly- that the polymerization polymeric monomer for being obtained by preparation prepares the consumption of the catalyst during polycarboxylate water-reducer
Close the 1.2% of polymeric monomer quality；The consumption of the chain-transferring agent is the 0.4% of polymerization polymeric monomer quality；The unsaturated little list
The consumption of body is the 18% of polymerization polymeric monomer quality.
A kind of preparation method of polycarboxylate superplasticizer mother liquor based on steam-curing concrete of the present invention, comprises the following steps：
It is prepared by step one, polymerization polymeric monomer：By isopentene group polyethylene glycol, methylpropenyl-polyethylene glycol and water by matching somebody with somebody
Than mixing so as to be completely dissolved under the catalytic action of oxidant, the large monomer solution that is polymerized is obtained；
It is prepared by step 2, unsaturated minor comonomer：By methacrylic acid, acrylic acid, acrylamide, methylpropene sodium sulfonate and
Water is mixed by proportioning, obtains unsaturated minor comonomer solution；
Step 3, catalyst, chain-transferring agent and water are made into catalysed promoted solution by consumption proportion；
Step 4, by the unsaturated minor comonomer solution for preparing and catalysed promoted solution be uniformly added drop-wise to polymerization polymeric monomer it is molten
In liquid, 0.5～1.0h of insulation reaction after completion of dropwise addition obtains reacted mixture；Alkali is added to reacted mixing species
Property solution, the pH of reacted mixture is neutralized in the range of 6～7, obtains polycarboxylate superplasticizer mother liquor.
Further, in step 4, the control of the time for adding of unsaturated minor comonomer solution and catalysed promoted solution 2～
2.5h。
A kind of polycarboxylate superplasticizer mother liquor based on steam-curing concrete that the present invention is provided and preparation method thereof, with existing skill
Art is compared, and on the basis of the excellent water-reducing property of existing polycarboxylate water-reducer is ensured, the early stage for increasing substantially concrete is strong
Degree, reduces the steam-cured time, and then reduces energy resource consumption, reduces the discharge of pernicious gas, the use of folk prescription concrete cement
Amount is also greatly lowered, and has not only saved cost, and the durability to concrete itself is also highly profitable.
In addition, use of the polycarboxylate water-reducer of the present invention in concrete has low volume, low cost, effect is significant
Feature, with good economic benefit and social benefit.
Specific embodiment
Below in conjunction with embodiments of the invention, technical scheme is clearly and completely described, it is clear that
Described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.Based on the enforcement in the present invention
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of protection of the invention.
Embodiment 1
A kind of polycarboxylate superplasticizer mother liquor based on steam-curing concrete of the present embodiment, be by will polymerization polymeric monomer with
React after water, catalyst, chain-transferring agent and unsaturated minor comonomer mixing, add in alkaline solution and pH value is obtained to after 6～7
, and be polymerized polymeric monomer be by isopentene group polyethylene glycol, methylpropenyl-polyethylene glycol and water catalyst catalytic action
Under, in mass ratio 0.8:1:0.8 preparation reaction is obtained；Above-mentioned unsaturated minor comonomer is by methacrylic acid, acrylic acid, acryloyl
Amine, methylpropene sodium sulfonate and water in mass ratio 4:16:1:3:40 preparations are obtained.Wherein, it is polymerized in the process for preparation of polymeric monomer
Catalyst amount be 1.0%, the reaction temperature of mixed liquor is 23～27 DEG C, and the polymerization polymeric monomer obtained by preparation prepares poly- carboxylic
The consumption of the catalyst during sour water reducer is the 1.0% of polymerization polymeric monomer quality；The consumption of chain-transferring agent is big single for polymerization
The 0.4% of weight；The consumption of unsaturated minor comonomer is the 15% of polymerization polymeric monomer quality.
Embodiment 2
In the present embodiment 2, polymerization polymeric monomer is that isopentene group polyethylene glycol, methylpropenyl-polyethylene glycol and water exist
Under the catalytic action of catalyst, in mass ratio 1:1:1 preparation reaction is obtained；Above-mentioned unsaturated minor comonomer by methacrylic acid, third
Olefin(e) acid, acrylamide, methylpropene sodium sulfonate and water in mass ratio 5:18:1:4:40 preparations are obtained.Wherein, be polymerized polymeric monomer
Catalyst amount in process for preparation is 1.2%, and the reaction temperature of mixed liquor is 23～27 DEG C, and the polymerization obtained by preparation is single greatly
Body prepares 1.2% that the consumption of the catalyst during polycarboxylate water-reducer is polymerization polymeric monomer quality；The consumption of chain-transferring agent
For the 0.4% of polymerization polymeric monomer quality；The consumption of unsaturated minor comonomer is the 18% of polymerization polymeric monomer quality.
Embodiment 3
In the present embodiment 3, polymerization polymeric monomer is that isopentene group polyethylene glycol, methylpropenyl-polyethylene glycol and water exist
Under the catalytic action of catalyst, in mass ratio 1.1:1.2:1 preparation reaction is obtained；Above-mentioned unsaturated minor comonomer is by metering system
Acid, acrylic acid, acrylamide, methylpropene sodium sulfonate and water in mass ratio 6:19:1:5:40 preparations are obtained.Wherein, it is polymerized big
Catalyst amount in the process for preparation of monomer is 1.3%, and the reaction temperature of mixed liquor is 23～27 DEG C, by gathering that preparation is obtained
Conjunction polymeric monomer prepares 1.2% that the consumption of the catalyst during polycarboxylate water-reducer is polymerization polymeric monomer quality；Chain-transferring agent
Consumption be polymerized polymeric monomer quality 0.5%；The consumption of unsaturated minor comonomer is the 19% of polymerization polymeric monomer quality.
Test example
The standard that the polycarboxylate superplasticizer mother liquor of embodiment and new material Science and Technology Ltd. of Shaanxi friendly nation are produced is early strong
The concrete of polycarboxylate water-reducer (YB-FG561) difference mix C40 strength grades, checks its performance.Wherein, concrete match ratio
Than as follows：
The steam curing temperature of concrete is 40 DEG C, and steam-cured 40 DEG C of measure 6h, 8h, 12h concrete crushing strength, test result is as follows：
Above-mentioned result of the test shows：The polycarboxylate water-reducer of the present invention is than Shaanxi friendly nation new material science and technology under making condition
The standard high early strength poly-carboxylic water reducer of Co., Ltd's production can more improve early strength, so as to reduce the week that demoulding time improves mould
Transfer efficient, reduces the steam-cured time.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, all should contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
1. a kind of polycarboxylate superplasticizer mother liquor based on steam-curing concrete, is by the way that polymerization polymeric monomer is turned with water, catalyst, chain
React after shifting agent and unsaturated minor comonomer mixing, add what is obtained to after 6～7 with pH value in alkaline solution, it is characterised in that：
The polymerization polymeric monomer includes isopentene group polyethylene glycol and methylpropenyl-polyethylene glycol；The unsaturated minor comonomer includes
Methacrylic acid, acrylic acid, acrylamide and methylpropene sodium sulfonate.
2. a kind of polycarboxylate superplasticizer mother liquor based on steam-curing concrete according to claim 1, it is characterised in that：It is described
Polymerization polymeric monomer be by isopentene group polyethylene glycol, methylpropenyl-polyethylene glycol and water under the catalytic action of catalyst, press
Mass ratio 0.8～1.1:1～1.2:0.8～1.0 preparation reaction is obtained.
3. a kind of polycarboxylate superplasticizer mother liquor based on steam-curing concrete according to claims 1 or 2, its feature exists
In：The polymerization polymeric monomer is that the catalysis by isopentene group polyethylene glycol, methylpropenyl-polyethylene glycol and water in catalyst is made
With under, in mass ratio 1:1:1 preparation reaction is obtained.
4. a kind of polycarboxylate superplasticizer mother liquor based on steam-curing concrete according to claims 1 or 2, its feature exists
In：The unsaturated minor comonomer by methacrylic acid, acrylic acid, acrylamide, methylpropene sodium sulfonate and water in mass ratio 4～
6:15～19:1:3～5:40 preparations are obtained.
5. a kind of polycarboxylate superplasticizer mother liquor based on steam-curing concrete according to claims 1 or 2, its feature exists
In：The weight average molecular weight of the isopentene group polyethylene glycol and methylpropenyl-polyethylene glycol is 1000～5000.
6. a kind of polycarboxylate superplasticizer mother liquor based on steam-curing concrete according to claim 2, it is characterised in that：Prepare
The reaction temperature of the mixed liquor of polymerization polymeric monomer is in the range of 23～27 DEG C.
7. a kind of polycarboxylate superplasticizer mother liquor based on steam-curing concrete according to claim 2, it is characterised in that：It is described
The consumption of the catalyst in polymerization polymeric monomer process for preparation is the 1.0～1.3% of polymerization polymeric monomer quality.
8. a kind of polycarboxylate superplasticizer mother liquor based on steam-curing concrete according to claim 1,2,6 or 7, its feature
It is：It is polymerization polymeric monomer matter that the polymerization polymeric monomer obtained by preparation prepares the consumption of the catalyst during polycarboxylate water-reducer
The 1.0～1.3% of amount；The consumption of the chain-transferring agent is the 0.4～0.5% of polymerization polymeric monomer quality；The unsaturated little list
The consumption of body is the 15～19% of polymerization polymeric monomer quality.
9. the system of a kind of polycarboxylate superplasticizer mother liquor based on steam-curing concrete according to claim 1 to 8 any one
Preparation Method, it is characterised in that comprise the following steps：
It is prepared by step one, polymerization polymeric monomer：Isopentene group polyethylene glycol, methylpropenyl-polyethylene glycol and water are mixed by proportioning
Close so as to be completely dissolved under the catalytic action of oxidant, obtain the large monomer solution that is polymerized；
It is prepared by step 2, unsaturated minor comonomer：Methacrylic acid, acrylic acid, acrylamide, methylpropene sodium sulfonate and water are pressed
Proportioning mixes, and obtains unsaturated minor comonomer solution；
Step 3, catalyst, chain-transferring agent and water are made into catalysed promoted solution by consumption proportion；
Step 4, the unsaturated minor comonomer solution for preparing and catalysed promoted solution are uniformly added drop-wise into polymerization large monomer solution
In, 0.5～1.0h of insulation reaction after completion of dropwise addition obtains reacted mixture；Alkalescence is added to reacted mixing species
Solution, the pH of reacted mixture is neutralized in the range of 6～7, obtains polycarboxylate superplasticizer mother liquor.
10. the preparation method of a kind of polycarboxylate superplasticizer mother liquor based on steam-curing concrete according to claim 9, it is special
Levy and be：In step 4, the time for adding of unsaturated minor comonomer solution and catalysed promoted solution is controlled in 2～2.5h.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110713574A (en) * | 2019-09-30 | 2020-01-21 | 北京中交桥宇科技有限公司 | Polycarboxylic acid water reducing agent for concrete and preparation method thereof |
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