CN109627401A - A kind of preparation method of polyethers synthesis collapse protective poly-carboxylic acid water reducing agent - Google Patents
A kind of preparation method of polyethers synthesis collapse protective poly-carboxylic acid water reducing agent Download PDFInfo
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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
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
- C08F290/062—Polyethers
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- 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
- C04B24/2688—Copolymers containing at least three different monomers
- C04B24/2694—Copolymers containing at least three different monomers containing polyether side chains
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- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/58—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide containing oxygen in addition to the carbonamido oxygen, e.g. N-methylolacrylamide, N-(meth)acryloylmorpholine
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- 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
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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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/58—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide containing oxygen in addition to the carbonamido oxygen, e.g. N-methylolacrylamide, N-(meth)acryloylmorpholine
- C08F220/585—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide containing oxygen in addition to the carbonamido oxygen, e.g. N-methylolacrylamide, N-(meth)acryloylmorpholine and containing other heteroatoms, e.g. 2-acrylamido-2-methylpropane sulfonic acid [AMPS]
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Abstract
The present invention provides a kind of preparation methods of novel polyether room temperature synthesis collapse protective poly-carboxylic acid water reducing agent, and this method comprises the following steps: (1) polyether macromonomer and deionized water being added in reaction kettle, stirring at normal temperature is spare to dissolving；Unsaturated carboxylic acid class monomer, unsaturated acids hydroxy ester are sufficiently mixed in water to obtain A liquid, it is spare；Reducing agent, chain-transferring agent and water are sufficiently mixed to obtain B liquid, it is spare；(2) A liquid in part is added into step (1) polymeric monomer aqueous solution, stirs evenly；(3) part initiator is added in advance into step (2) gains, A liquid and B liquid is then added dropwise, reacts 0.5h after being added dropwise；(4) lye is added after reaction to neutralize to get the water-reducing agent is arrived.The present invention synthesizes a kind of guarantor using novel polyether at normal temperature and collapses water-reducing agent, has many advantages, such as that process flow is simple, with short production cycle.Synthesized product water-reducing rate is high, environmentally protective, and function of slump protection is excellent in similar product, has good market prospects.
Description
Technical field
The present invention relates to technical field of concrete additives, in particular to a kind of novel polyether EPEG synthesizes the poly- carboxylic of collapse protection type
The preparation method of sour water-reducing agent.
Background technique
Concrete admixture as in concrete in addition to cement, sand, stone, water, the 6th component except mineral admixture,
Important role is play in the application of high performance concrete.With the large-scale base such as subway, tunnel, highway, bridge, harbour
Infrastructure is built extensively, this more increases the market of cement additive.
Patent CN107337769A reports a kind of preparation method of collapse protective poly-carboxylic acid water reducing agent, and this method is at normal temperature
It is reacted, 2.5h-3h is added dropwise in reaction, keeps the temperature 2-3h after dripping, cooling plus alkali neutralization is after completion of the reaction to get described
Collapse protective poly-carboxylic acid water reducing agent.Although the patent using being reacted at normal temperature, reaction condition is mild, and does not add any
Catalyst and organic solvent have accomplished greenization production；But the preparation method reaction time described in the patent is long, energy consumption compared with
Greatly, higher cost.
Patent CN106396462A reports a kind of preparation method of collapse protective poly-carboxylic acid water reducing agent, and calamine is crushed,
Dehydrated alcohol thermal agitation at 52 DEG C is added to handle, adds poly-epoxy succinic acid thermal agitation at 65 DEG C and handles, be then added
Casein solution is handled in 80 DEG C of thermal agitations, be added polymethylacrylic acid and polyethylene glycol adipate heat treatment, ultrasonic treatment,
Centrifugal treating takes filtrate, thermal agitation to handle to obtain the final product.Although water-reducing agent made from this method has preferable function of slump protection and adapts to
Property, but temperature is more difficult to control in reaction process, and reaction step is cumbersome, is unfavorable for industrial production, and temperature is high, energy consumption
Greatly, higher cost.
Collapse protective poly-carboxylic acid water reducing agent is a kind of preferable water-reducing agent kind of comprehensive performance, excellent with function of slump protection,
The products characteristics such as dispersibility is high, and adaptability is good, are widely used in each large construction project.But collapse protective poly-carboxylic acid in the market
Although water-reducing agent has preferable performance, most of preparation process is cumbersome, and reaction temperature is high, and reaction time is long, consumes energy larger,
And it is not environmentally friendly enough.The present invention uses C4 (2+2) novel polyether polymeric monomer, and it is simple to have developed a kind of preparation process, the reaction time
It is short, and can react under room temperature, low energy consumption, environment friendly and pollution-free high performance novel collapse protective poly-carboxylic acid water reducing agent.
Summary of the invention
Of the existing technology to overcome the problems, such as, the present invention provides a kind of preparation method of collapse protective poly-carboxylic acid water reducing agent.
The present invention the following technical schemes are provided:
A kind of preparation method of collapse protective poly-carboxylic acid water reducing agent, which comprises the following steps:
1) a certain amount of polyether macromonomer and deionized water being added in reaction kettle, stirring dissolves it at normal temperature,
A liquid is obtained after being sufficiently mixed in unsaturated carboxylic acid class monomer, unsaturated acids hydroxy ester and water according to formula ratio；By reducing agent,
Chain-transferring agent and water obtain B liquid after being sufficiently mixed.
2) after unsaturated polyether polymeric monomer (C4 (2+2) water reducing type) is completely soluble, the prepared A in part is added to it
Liquid stirs evenly；
3) residue A liquid and B liquid are at the uniform velocity added dropwise in step (2), A liquid time for adding is 0.5-1.0h, and B liquid time for adding is
Before starting to be added dropwise a certain amount of initiator can be added in advance according to experiment proportion in 1.0-1.5h., and the reaction was continued after being added dropwise
0.5h；
4) after reaction be added appropriate alkaline liquor neutralize, by product pour out to get to it is a kind of using novel polyether synthesis
Collapse protective poly-carboxylic acid water reducing agent.
Further, the polyether macromonomer is 300 parts；1.8~2.8 parts of initiator；100~160 parts of A liquid, B liquid 65~
130 parts；10-17 parts of lye.Wherein, A liquid is grouped as by the group of following parts by weight: 1.1-1.5 parts of unsaturated carboxylic acid class minor comonomer,
1~1.7 part of unsaturated acids hydroxy ester, 4~5 parts of water；B liquid is grouped as by the group of following parts by weight: 2~4 parts of chain-transferring agent, reduction
1 part of agent, 150~250 parts of water.
Further, the polyether macromonomer in the step (1) is unsaturated polyether C4 (2+2) water reducing type polyethers EPEG,
Molecular weight is between 1200-4000, structural formula are as follows: CH2=CH-O-C2H4O- (C2H4O) n-H, abbreviation C4 (2+2), molecular weight
For 1200-4000.
Further, material melting temperature is room temperature in the step (1).
Further, the unsaturated carboxylic acid class minor comonomer in step (2) and step (3) be (acrylic acid, methacrylic acid,
Maleic anhydride, itaconic acid, styrene sulfonic acid, 2- acrylamide-2-methyl propane sulfonic, in 2- acrylamido myristyl sulfonic acid
It is one or more), unsaturated acids hydroxy ester be (, 2-hydroxypropyl acrylate, methacrylic acid -2- hydroxy methacrylate, first
One of base 2-hydroxypropyl acrylate, glycidyl methacrylate are a variety of).
Further, the initiator being added in advance in step (3) is (potassium peroxydisulfate, ammonium persulfate, hydrogen peroxide, peroxide
Change one of dibenzoyl, tert-butyl hydroperoxide, isopropyl benzene hydroperoxide or a variety of)；The reducing agent being added dropwise in B liquid is
(L-AA, sodium thiosulfate, N, N- diethylaniline, N, one of accelerine or a variety of)；Chain-transferring agent
For (one of thioacetic acid, mercaptopropionic acid, sodium allylsulfonate, methylpropene sodium sulfonate, Sodium Allyl Sulfonate or a variety of).
Further, after material dissolves, A liquid and B liquid is added dropwise simultaneously in step (3), time for adding is respectively 0.5h
~1.0h, 1.0~1.5h, the reaction was continued 0.5h after being added dropwise；
Further, in the step (2), the neutralizer for adjusting polymerizate PH is the potassium hydroxide, dense of concentration 30%
Sodium hydroxide, ethanol amine, diethanol amine, one of the triethanolamine or a variety of of degree 30%.
The present invention is to synthesize a kind of new polycarboxylic acid water reducer using solution polymerization process, and its advantages are as follows:
Products characteristics the such as 1. present invention have function of slump protection excellent, and dispersibility is high, and slump retaining is good；
2. C4 (2+2) the polyether macromonomer reactivity that the present invention uses is high, it can react at normal temperature, be easy to industrialize
Production, reaction time is short, reaction condition and easy to operate, and pollution-free, low energy consumption, and excellent product performance；
3. the present invention does not use organic solvent in process of production, accomplish completely environment friendly and pollution-free, meets ISO14000 ring
Border conservative management international standard；
Specific embodiment
The method of the present invention is described in detail below with reference to embodiment.
Embodiment 1
(1) 300g polyether macromonomer is added in four-hole boiling flask reaction kettle, 220g deionized water, stirring keeps its molten under room temperature
Change.104gA liquid is prepared, the group of parts by weight is grouped as are as follows: 1 part of acrylic acid, 1.3 parts of hydroxy-ethyl acrylate, hydroxypropyl acrylate
0.4 part, 0.1 part of 2- acrylamide-2-methylpro panesulfonic acid, 4 parts of water；92gB liquid is prepared, the group of parts by weight is grouped as are as follows: mercapto
2 parts of guanidine-acetic acid, 1 part of L-AA, 150 parts of water.
(2) 21gA liquid is added in advance in the polymeric monomer fusion process in step (1), stirs evenly；
(3) it is to be mixed dissolve after, 2g hydrogen peroxide is added in advance in step (2), then to being added dropwise A simultaneously in step (3)
Liquid and B liquid, time for adding is respectively 0.5h~1.0h, 1.0~1.5h, keeps the temperature 0.5h after being added dropwise；
(4) sodium hydroxide solution that 30% concentration of 16g is added carries out neutralization reaction product will produce after stirring 3-5 minutes
Object is poured out to get the novel collapse protective poly-carboxylic acid high-performance water reducing agent arrived.
Embodiment 2
(1) 300g polyether macromonomer is added in four-hole boiling flask reaction kettle, 220g deionized water, stirring keeps its molten under room temperature
Change；104gA liquid is prepared, the group of parts by weight is grouped as are as follows: 1 part of acrylic acid, 1 part of hydroxy-ethyl acrylate, hydroxypropyl acrylate 0.3
Part, 0.1 part of 2- acrylamide-2-methylpro panesulfonic acid, 4 parts of water；92gB liquid is prepared, the group of parts by weight is grouped as are as follows: sulfydryl
2 parts of acetic acid, 1.1 parts of L-AA, 160 parts of water.
(2) 21gA liquid is added in advance in the polymeric monomer fusion process in step (1), stirs evenly；
(3) it is to be mixed dissolve after, 2g hydrogen peroxide is added in advance in step (2), then to being added dropwise A simultaneously in step (3)
Liquid and B liquid, time for adding is respectively 0.5h~1.0h, 1.0~1.5h, keeps the temperature 0.5h after being added dropwise；
(4) 16g30% sodium hydroxide solution neutralization reaction product is added, after 3-5 minutes, product is poured out to arrive
Novel collapse protective poly-carboxylic acid high-performance water reducing agent.
Embodiment 3
(1) 300g polyether macromonomer is added in four-hole boiling flask reaction kettle, 220g deionized water, stirring keeps its molten under room temperature
Change；120gA liquid is prepared, the group of parts by weight is grouped as are as follows: 1 part of acrylic acid, 1.3 parts of hydroxy-ethyl acrylate, hydroxypropyl acrylate
0.4 part, 0.1 part of 2- acrylamide-2-methylpro panesulfonic acid, 4.5 parts of water；100gB liquid is prepared, the group of parts by weight is grouped as
Are as follows: 2 parts of thioacetic acid, 1.2 parts of L-AA, 160 parts of water.
(2) 21gA liquid is added in advance in the polymeric monomer fusion process in step (1), stirs evenly；
(3) it is to be mixed dissolve after, 2.2g hydrogen peroxide is added in advance in step (2), then to being added dropwise simultaneously in step (3)
A liquid and B liquid, time for adding is respectively 0.5h~1.0h, 1.0~1.5h, keeps the temperature 0.5h after being added dropwise；
(4) be added 16g30% sodium hydroxide solution neutralization reaction product, stirring 3-5 minutes after, by product pour out to get
The novel collapse protective poly-carboxylic acid high-performance water reducing agent arrived.
Embodiment 4
(1) 300g polyether macromonomer is added in four-hole boiling flask reaction kettle, 220g deionized water, stirring keeps its molten under room temperature
Change；120gA liquid is prepared, the group of parts by weight is grouped as are as follows: 1 part of acrylic acid, 1.4 parts of hydroxy-ethyl acrylate, hydroxypropyl acrylate
0.2 part, 0.1 part of 2- acrylamide-2-methylpro panesulfonic acid, 4.0 parts of water；100gB liquid is prepared, the group of parts by weight is grouped as
Are as follows: 2 parts of thioacetic acid, 1.2 parts of L-AA, 160 parts of water.
(2) 21gA liquid is added in advance in the polymeric monomer fusion process in step (1), stirs evenly；
(3) it is to be mixed dissolve after, 2.2g hydrogen peroxide is added in advance in step (2), then to being added dropwise simultaneously in step (3)
A liquid and B liquid, time for adding is respectively 0.5h~1.0h, 1.0~1.5h, keeps the temperature 0.5h after being added dropwise；
(4) be added 16g30% sodium hydroxide solution neutralization reaction product, stirring 3-5 minutes after, by product pour out to get
The novel collapse protective poly-carboxylic acid high-performance water reducing agent arrived.
Comparative example
Commercial liquid collapse protective poly-carboxylic acid water reducing agent.
Performance test
1. flowing degree of net paste of cement
According to GB/T8077-2000 " concrete admixture homogeneity test method ", its net slurry is measured using reference cement
Fluidity, test condition W/C=0.29, it is 0.14% that water-reducing agent, which rolls over solid volume, and concrete performance test is according to GB 8076-
2008 " concrete admixtures " carry out.Jinyu cement in Beijing is selected to detect concrete slump/divergence measurement result such as table one
It is shown:
Table one: the cement paste fluidity measuring result of embodiment 1-3 and comparative example
As can be seen from Table I, the present invention synthesized by novel collapse protective poly-carboxylic acid water reducing agent water-reducing agent dispersibility and collapse
Degree of falling retentivity is all significantly larger than commercially available liquid collapse protective poly-carboxylic acid water reducing agent.On raw material, the present invention uses novel polyether
EPEG, novel polyether reasonable price, effect is good, and reactivity is high, and has reaction temperature low in technique, the reaction time
It is short, the advantages of the features such as low energy consumption.
The above-mentioned example is preferred embodiments of the invention, is used merely to explain present example and is not intended to limit this hair
It is bright.Equivalent change or modification made by all thinkings according to the present invention and principle, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of preparation method of collapse protective poly-carboxylic acid water reducing agent, which comprises the following steps:
(1) polyether macromonomer and deionized water are added in reaction kettle, stirring dissolves it at normal temperature, spare；By insatiable hunger
A liquid is obtained after being sufficiently mixed in water with carboxylic acid type monomer, unsaturated acids hydroxy ester, it is spare；By reducing agent, chain-transferring agent and water
B liquid is obtained after being sufficiently mixed, it is spare；
(2) A liquid in part is added in polymeric monomer aqueous solution in step (1), stirs evenly；
(3) a certain amount of initiator is added in advance into step (2) gains, A liquid and B liquid is then added dropwise, is added dropwise subsequent
Continuous reaction 0.5h；
(4) lye is added after reaction to neutralize, product is poured out to get collapse protective poly-carboxylic acid water reducing agent is arrived.
2. the method according to claim 1, wherein the polyether macromonomer C4 (2+2): 300 parts；Initiator
1.8~2.8 parts；100~160 parts of A liquid, 65~130 parts of B liquid；10-17 parts of lye.
3. the method according to claim 1, wherein the polyether macromonomer in the step (1) is unsaturated poly-
Ether C4 (2+2) water reducing type polyethers EPEG, structural formula are as follows: CH2=CH-O-C2H4O- (C2H4O) n-H, molecular weight 1200-
4000。
4. being carried out the method according to claim 1, wherein being dissolved described in step (1) in room temperature.
5. the method according to claim 1, wherein A liquid described in step (1) includes the group of following parts by weight
Point: 1.1-1.5 parts of unsaturated carboxylic acid class minor comonomer, 1~1.7 part of unsaturated acids hydroxy ester, 4~5 parts of water；The B liquid include with
The component of lower parts by weight: 2~4 parts of chain-transferring agent, 1 part of reducing agent, 150~250 parts of water.
6. the method according to claim 1, wherein the unsaturated carboxylic acid class minor comonomer is acrylic acid, methyl
Acrylic acid, maleic anhydride, itaconic acid, styrene sulfonic acid, 2- acrylamide-2-methyl propane sulfonic, the 2- acrylamido tetradecane
One of base sulfonic acid is a variety of, the unsaturated acids hydroxy ester be 2-Hydroxy ethyl acrylate, 2-hydroxypropyl acrylate,
One of methacrylic acid -2- hydroxy methacrylate, methacrylic acid -2- hydroxy propyl ester, glycidyl methacrylate are more
Kind.
7. the method according to claim 1, wherein reducing agent described in step (1) is L-AA, thio
Sodium sulphate, N, N- diethylaniline, N, one of accelerine or a variety of；The chain-transferring agent is thioacetic acid, mercapto
One of base propionic acid, sodium allylsulfonate, methylpropene sodium sulfonate, Sodium Allyl Sulfonate are a variety of.
8. the method according to claim 1, wherein the initiator being added in advance described in step (3) is over cure
One of sour potassium, ammonium persulfate, hydrogen peroxide, dibenzoyl peroxide, tert-butyl hydroperoxide, isopropyl benzene hydroperoxide or
It is a variety of.
9. the method according to claim 1, wherein the time for adding of A liquid described in step (3) be 0.5~1h,
The time for adding of B liquid is 1-1.5h.
10. the method according to claim 1, wherein lye described in step (4) is the hydroxide of concentration 30%
One of potassium, the sodium hydroxide of concentration 30%, ethanol amine, diethanol amine, triethanolamine are a variety of.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110642995A (en) * | 2019-09-27 | 2020-01-03 | 贵州石博士科技有限公司 | Preparation method of polycarboxylic acid water reducer for low-slump concrete |
| CN111171245A (en) * | 2019-12-27 | 2020-05-19 | 安徽海螺新材料科技有限公司 | Preparation method and application of acrylate compound for slump-retaining type polycarboxylate superplasticizer |
| CN112457452A (en) * | 2020-12-03 | 2021-03-09 | 山东泰和水处理科技股份有限公司 | Degradable water reducing agent and synthesis method thereof |
| CN113174019A (en) * | 2021-05-21 | 2021-07-27 | 山西佳维新材料股份有限公司 | Water-based epoxy ester modified polycarboxylate superplasticizer and preparation method and application thereof |
| CN114249866A (en) * | 2021-12-31 | 2022-03-29 | 安徽海螺新材料科技有限公司 | High-efficiency polycarboxylic acid water reducing agent and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3929202B2 (en) * | 1998-06-11 | 2007-06-13 | 株式会社日本触媒 | Cement admixture |
| CN104446093A (en) * | 2014-12-04 | 2015-03-25 | 河北铁园科技发展有限公司 | Polycarboxylate-based water reducing agent with integrated functions of water reduction and slump retaining |
| CN106277899A (en) * | 2016-08-22 | 2017-01-04 | 山西大学 | A kind of polycarboxylate water-reducer and preparation method thereof |
-
2018
- 2018-12-04 CN CN201811472409.8A patent/CN109627401A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3929202B2 (en) * | 1998-06-11 | 2007-06-13 | 株式会社日本触媒 | Cement admixture |
| CN104446093A (en) * | 2014-12-04 | 2015-03-25 | 河北铁园科技发展有限公司 | Polycarboxylate-based water reducing agent with integrated functions of water reduction and slump retaining |
| CN106277899A (en) * | 2016-08-22 | 2017-01-04 | 山西大学 | A kind of polycarboxylate water-reducer and preparation method thereof |
Non-Patent Citations (6)
| Title |
|---|
| 中国建筑学会建材分会混凝土外加剂应用技术专业委员会编: "《聚羧酸系高性能减水剂制备、性能与应用技术新进展 第六届混凝土外加剂应用技术专业委员会年会》", 31 May 2013, 北京理工大学出版社 * |
| 中国建筑学会混凝土外加剂应用技术专业委员会编: "《混凝土外加剂及其应用技术新进展》", 30 June 2009, 北京理工大学出版社 * |
| 刘冠杰等: "聚羧酸减水剂聚醚大单体的应用研究进展", 《日用化学品科学》 * |
| 吴文贵等: "《第三届两岸四地高性能混凝土国际研讨会论文集》", 31 October 2012, 中国建材工业出版社 * |
| 朱效荣等: "《混凝土工作性调整》", 31 May 2016, 中国建材工业出版社 * |
| 阮承祥: "《混凝土外加剂及其工程应用》", 31 December 2008, 江西科学技术出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110642995A (en) * | 2019-09-27 | 2020-01-03 | 贵州石博士科技有限公司 | Preparation method of polycarboxylic acid water reducer for low-slump concrete |
| CN111171245A (en) * | 2019-12-27 | 2020-05-19 | 安徽海螺新材料科技有限公司 | Preparation method and application of acrylate compound for slump-retaining type polycarboxylate superplasticizer |
| CN111171245B (en) * | 2019-12-27 | 2022-08-02 | 安徽海螺新材料科技有限公司 | Preparation method and application of acrylate compound for slump-retaining type polycarboxylate superplasticizer |
| CN112457452A (en) * | 2020-12-03 | 2021-03-09 | 山东泰和水处理科技股份有限公司 | Degradable water reducing agent and synthesis method thereof |
| CN113174019A (en) * | 2021-05-21 | 2021-07-27 | 山西佳维新材料股份有限公司 | Water-based epoxy ester modified polycarboxylate superplasticizer and preparation method and application thereof |
| CN114249866A (en) * | 2021-12-31 | 2022-03-29 | 安徽海螺新材料科技有限公司 | High-efficiency polycarboxylic acid water reducing agent and preparation method and application thereof |
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Application publication date: 20190416 |