CN105884979B - The normal temperature preparation method of sustained-release polycarboxylic slump retaining agent - Google Patents
The normal temperature preparation method of sustained-release polycarboxylic slump retaining agent Download PDFInfo
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- CN105884979B CN105884979B CN201610218756.2A CN201610218756A CN105884979B CN 105884979 B CN105884979 B CN 105884979B CN 201610218756 A CN201610218756 A CN 201610218756A CN 105884979 B CN105884979 B CN 105884979B
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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
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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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- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention discloses a kind of normal temperature preparation method of sustained-release polycarboxylic slump retaining agent, which is added the first initiator in the aqueous solution of modified polyoxyethylene ether the following steps are included: at 0~40 DEG C.A liquid is added dropwise after stirring 2 minutes, B liquid is added dropwise after ten minutes A liquid is added dropwise, A liquid and B liquid drip in 2 hours, are added dropwise continuous stirring 0.5~1 hour completely subsequent.Alkaline solution is used to be adjusted to pH value as 6~8, adding water to solid content is 30~50%, obtains sustained-release polycarboxylic slump retaining agent.The normal temperature preparation method of above-mentioned sustained-release polycarboxylic slump retaining agent, preparation process is simple, device simple, and room temperature synthesis, low energy consumption；Reaction time is short, high production efficiency, pollution-free；The sustained-release polycarboxylic slump retaining agent and common polycarboxylic acids water reducing agent compositional being prepared even increase in cement paste, being able to maintain fluidity and not losing in 2h, and are applied in concrete that the slump-loss of concrete can be significantly reduced.
Description
Technical field
The present invention relates to concrete admixture field more particularly to a kind of room temperature preparation sides of sustained-release polycarboxylic slump retaining agent
Method.
Background technique
With the rapid development of our country's economy with the raising of building level, the requirement to concrete quality is higher and higher.It is poly-
Carboxylic acid water reducer is as a kind of new high performance water-reducing agent, because its volume is low, water-reducing rate is high, fresh concrete mobility and guarantor are collapsed
Property good, lower shrinkage, enhancing potentiality are big, a series of outstanding properties such as environmental-friendly, be widely used to municipal administration, railway, highway, port
The fields such as mouth, bridge, water power.
But since domestic cement type is numerous and Cement Quality fluctuation very big, concrete gravel inferior quality etc. is numerous
Reason.For example, clay content and amount containing mountain flour is very high and certain Machine-made Sand qualities are very poor etc..Using universal polycarboxylic water reducer
The concrete configured also will appear some problems, and it is the most common main problem that wherein Slump Time losing of Large is excessive.Especially
When it is long-time long-distance transportation, concrete slump loss will lead to quickly, this not only influences construction, can also be great
The performance and quality for influencing concrete, thus constrain the popularization of polycarboxylate water-reducer to a certain extent.
The main method that the country solves problem above mainly has following three kinds: (1) compounding retarder；(2) secondary or more
Secondary addition water-reducing agent；(3) initial fluidity, or even isolation are improved, to guarantee the pump-conveying property in building site.Although above-mentioned three kinds of methods
It is able to solve slump-loss problem in a way, but each has some limitations, can not fundamentally solve
Certainly the problem of slump-loss.Therefore, it is necessary to make water-reducing agent slow release be to solve Control Measures for Concrete Slump using reactive polymer
Spend the effective ways of loss problem.But currently, domestic mother liquor product is single, mainly with high water reduction type and common collapse protective poly-carboxylic acid
Based on mother liquor, and common collapse protective poly-carboxylic acid, developed on the basis of high water reduction type polycarboxylic acids, concrete initially have compared with
Big fluidity, but through when still have certain loss, have the work of particular/special requirement for long-time long-distance transportation or to the slump
Journey is not able to satisfy still.For this purpose, fundamentally being solved there is an urgent need to a kind of polycarboxylate water-reducer for controlling concrete slump loss
Certainly 1~2h even more collapses damage problem for a long time, widens the requirement that additive kind meets different engineerings.
In addition, the production technology of many polycarboxylic acid slump retaining agents is typically all 3 more than hour at present, 40~80 DEG C of temperature strips
It is synthesized under part.It synthesizes at normal temperature, low energy consumption, and the reaction time is shorter, can improve production efficiency with save the cost.
Summary of the invention
The present invention provides a kind of normal temperature preparation methods of sustained-release polycarboxylic slump retaining agent, poly- to solve existing collapse protection type
Carboxylic acid mother liquor, which is used to collapse when concrete, damages big technical problem.
The technical solution adopted by the invention is as follows:
A kind of normal temperature preparation method of sustained-release polycarboxylic slump retaining agent, comprising the following steps:
At 0~40 DEG C, the first initiator is added in the aqueous solution of modified polyoxyethylene ether.
A liquid is added dropwise after stirring 2 minutes, B liquid is added dropwise after ten minutes A liquid is added dropwise, A liquid and B liquid drip in 2 hours,
It is added dropwise continuous stirring 0.5~1 hour completely subsequent.
Alkaline solution is used to be adjusted to pH value as 6~8, adding water to solid content is 30~50%, obtains sustained-release polycarboxylic
Slump retaining agent.
Wherein, A liquid is the aqueous solution of the second initiator.
B liquid is unsaturated carboxylic acid and the mixed liquor for being sustained monomer.
Modified polyoxyethylene ether is the isopentene group polyoxyethylene ether that molecular weight is 2400.
Unsaturated carboxylic acid is selected from one or more of acrylic acid, methacrylic acid, maleic acid and itaconic acid.
It is sustained monomer and is selected from one of hydroxy-ethyl acrylate, hydroxypropyl acrylate and polyethyleneglycol diacrylate or several
Kind.
First initiator and the second initiator are respectively selected from sodium peroxydisulfate, ammonium persulfate, potassium peroxydisulfate, hydrogen peroxide, methyl
Sodium allylsulfonate, thioacetic acid, the one or more of mercaptopropionic acid, sodium bisulphite formaldehyde.
Further, modified polyoxyethylene ether, unsaturated carboxylic acid and be sustained monomer molar ratio be 1:0.8~3:2~
2.75。
Further, the molar ratio of modified polyoxyethylene ether, unsaturated carboxylic acid and sustained release monomer is 1:2.2:2.75.
Further, mass ratio 1:1.0%~2.0% of modified polyoxyethylene ether and the first initiator.
Further, mass ratio 1:0.15%~0.35% of modified polyoxyethylene ether and the second initiator.
Further, the mass percent of alkaline solution is 30%, and alkaline solution is sodium hydrate aqueous solution, potassium hydroxide
At least one of aqueous solution or ammonium hydroxide.
Further, the mass percent of the aqueous solution of modified polyoxyethylene ether is 50~70%, the water of the second initiator
The mass percent of solution is 1~10%.
Further, the solid content of sustained-release polycarboxylic slump retaining agent is 40%.
The invention has the following advantages: the normal temperature preparation method of above-mentioned sustained-release polycarboxylic slump retaining agent, preparation process
Simply, device simple, room temperature synthesis, low energy consumption；Reaction time is short, high production efficiency, and pollution-free；The slow-release being prepared
Polycarboxylic acid slump retaining agent and common polycarboxylic acids water reducing agent compositional are for being able to maintain fluidity and not losing very in 2h in cement paste
To increase, and it is applied in concrete that the slump-loss of concrete can be significantly reduced.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
The present invention is further detailed explanation below.
Specific embodiment
The embodiment of the present invention is described in detail below, but what the present invention can be defined by the claims and cover
Multitude of different ways is implemented.
Embodiment 1
In parts by weight, 150 parts and 100 parts of water of isopentene group polyoxyethylene ether for being 2400 by molecular weight, are put into reaction
In container, at a temperature of 5 ± 5 DEG C, stirring 20min is completely dissolved reactant, and 2 parts of thioacetic acid are added later, stirs 5 points
Then clock starts that 40 parts of 1% ammonium persulfate is added dropwise, start to be added dropwise dissolved with 10 parts of acrylic acid and hydroxy-ethyl acrylate 20 after 10min
Part mixed solution, control rate of addition, dripped off in 1h, the reaction was continued 40min.30% sodium hydroxide solution is added later
PH to 6~8 is adjusted, and it is 40% that certain water, which is added, to be diluted to solid content, obtains sustained-release polycarboxylic slump retaining agent.
Embodiment 2
In parts by weight, 190 parts and 120 parts of water of isopentene group polyoxyethylene ether for being 2400 by molecular weight, are put into reaction
In container, at a temperature of 15 ± 5 DEG C, stirring 30min is completely dissolved reactant, and 3 parts of thioacetic acid are added later, stirs 10 points
Then clock starts that 45 parts of 1% potassium peroxydisulfate is added dropwise, start to be added dropwise dissolved with 5 parts and 25 parts of hydroxypropyl acrylate of acrylic acid after 10min
Mixed solution, control rate of addition, dripped off in 2h, the reaction was continued 30min.Later be added 30% ammonia spirit tune PH extremely
6~8, and it is 40% that certain water, which is added, to be diluted to solid content, obtains sustained-release polycarboxylic slump retaining agent.
Embodiment 3
In parts by weight, 170 parts and 110 parts of water of isopentene group polyoxyethylene ether for being 2400 by molecular weight, are put into reaction
In container, at a temperature of 25 ± 5 DEG C, stirring 20min is completely dissolved reactant, and 2.5 parts of methylpropene sodium sulfonates are added later,
Then stirring 15 minutes starts that 40 parts of 1% sodium peroxydisulfate is added dropwise, starts to be added dropwise after 10min dissolved with 15 parts of acrylic acid and acrylic acid
The mixed solution that 20 parts of hydroxyl ethyl ester controls rate of addition, drips off in 1.5h, the reaction was continued 60min.30% hydrogen is added later
Potassium oxide solution tune PH to 6~8, and it is 40% that certain water, which is added, to be diluted to solid content, obtains sustained-release polycarboxylic slump retaining agent.
The sustained-release polycarboxylic slump retaining agent prepared in the embodiment of the present invention 1~3, using reference cement, according to GB/T8077-
The 2000 test quiet slurry fluidities of cement.Experimental result is shown in Table 1:
The quiet slurry fluidity ongoing change of table 1- reference cement (30 DEG C of test temperature)
The quiet slurry fluidity ongoing change of table 2- reference cement compound tense (30 DEG C of test temperature)
Note: PC101 is standard polycarboxylate water-reducer, is commercial product, is purchased from Hunan Ming Huang development in science and technology Co., Ltd
The standard polycarboxylate water-reducer of MH101 model, PC-1 are sustained-release polycarboxylic slump retaining agent, and PC-0 is common polycarboxylic acid slump retaining agent,
It is commercial product, the polycarboxylic acid slump retaining agent purchased from Hunan Xin Xuan building material Co., Ltd BT-005 model.
As can be seen from Table 1, when water-reducing agent volume is 0.2%, PC-1 of the invention, PC-2, the quiet slurry of the cement of PC-3
Fluidity is continuously increased with the extension of time, still has very big fluidity after 2h.And common polycarboxylic acid slump retaining agent water
The quiet slurry fluidity of mud starts to increase with the time, starts to reduce after 1h；The quiet slurry fluidity of standard polycarboxylate water-reducer cement is opened
Begin to gradually decrease with the time.As can be seen from Table 2, distinguished using sustained-release polycarboxylic slump retaining agent and common polycarboxylic acid slump retaining agent
It is used in cement paste with standard polycarboxylic acids water reducing agent compositional, sustained-release polycarboxylic slump retaining agent and standard polycarboxylic acids water reducing agent compositional
It is able to maintain fluidity and is not lost in 2h and even increased, and common polycarboxylic acid slump retaining agent and standard polycarboxylic acids water reducing agent compositional,
Fluidity starts to reduce within 1h.As it can be seen that sustained-release polycarboxylic slump retaining agent prepared by the present invention is than common polycarboxylic acid slump retaining agent
The later period function of slump protection for showing superelevation has achieved the purpose that protect carboxyl later period slow release.
The sustained-release polycarboxylic slump retaining agent that embodiment 1 obtains is subtracted with standard polycarboxylic acids respectively with common polycarboxylic acid slump retaining agent
Aqua compounding, carries out concrete test performance comparison:
According to GB/T 50080-2002 " Standard for test methods of properties of ordinary concrete mixture standard ", concrete mixing is tested
The slump and slump ongoing change of object.Cement is conch cement, and volume is the 0.2% of cementitious material quality.Detection cooperation
Such as the following table 3.
3 concrete mix of table
| C | F | S | G | W | A.D |
| 300 | 50 | 790 | 1110 | 150 | 0.4 |
4 concrete slump retaining situation result of table
From table 4, it can be seen that sustained-release polycarboxylic slump retaining agent of the invention has longer slump holding capacity, collapse
Degree through when hardly lose, concrete strength is high, excellent combination property, and product cost is high.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of normal temperature preparation method of sustained-release polycarboxylic slump retaining agent, which comprises the following steps:
At 0~40 DEG C, thioacetic acid or methylpropene sodium sulfonate is added in the aqueous solution of modified polyoxyethylene ether；
A liquid is added dropwise after stirring 5 minutes, 10 minutes or 15 minutes, B liquid is added dropwise after ten minutes A liquid is added dropwise, the A liquid and B liquid exist
It drips, is added dropwise continuous stirring 0.5~1 hour completely subsequent in 2 hours；
Alkaline solution is used to be adjusted to pH value as 6~8, adding water to solid content is 30~50%, obtains the sustained-release polycarboxylic
Slump retaining agent；
Wherein, the A liquid is the aqueous solution of ammonium persulfate, potassium peroxydisulfate or sodium peroxydisulfate；
The B liquid is unsaturated carboxylic acid and the mixed liquor for being sustained monomer；
The modified polyoxyethylene ether is the isopentene group polyoxyethylene ether that molecular weight is 2400；
The unsaturated carboxylic acid is selected from one or more of acrylic acid, methacrylic acid, maleic acid and itaconic acid；
The sustained release monomer is selected from one of hydroxy-ethyl acrylate, hydroxypropyl acrylate and polyethyleneglycol diacrylate or several
Kind.
2. the normal temperature preparation method of sustained-release polycarboxylic slump retaining agent according to claim 1, which is characterized in that the modification
The molar ratio of polyoxyethylene ether, the unsaturated carboxylic acid and the sustained release monomer is 1:0.8~3:2~2.75.
3. the normal temperature preparation method of sustained-release polycarboxylic slump retaining agent according to claim 2, which is characterized in that the modification
The molar ratio of polyoxyethylene ether, the unsaturated carboxylic acid and the sustained release monomer is 1:2.2:2.75.
4. the normal temperature preparation method of sustained-release polycarboxylic slump retaining agent according to claim 1, which is characterized in that the modification
Mass ratio 1:1.0%~2.0% of polyoxyethylene ether and the thioacetic acid or methylpropene sodium sulfonate.
5. the normal temperature preparation method of sustained-release polycarboxylic slump retaining agent according to claim 1, which is characterized in that the modification
Mass ratio 1:0.15%~0.35% of polyoxyethylene ether and the ammonium persulfate, potassium peroxydisulfate or sodium peroxydisulfate.
6. the normal temperature preparation method of sustained-release polycarboxylic slump retaining agent according to claim 1, which is characterized in that the alkalinity
The mass percent of solution is 30%, and the alkaline solution is in sodium hydrate aqueous solution, potassium hydroxide aqueous solution or ammonium hydroxide
It is at least one.
7. the normal temperature preparation method of sustained-release polycarboxylic slump retaining agent according to claim 1, which is characterized in that the modification
The mass percent of the aqueous solution of polyoxyethylene ether is 50~70%, the water of the ammonium persulfate, potassium peroxydisulfate or sodium peroxydisulfate
The mass percent of solution is 1~10%.
8. the normal temperature preparation method of sustained-release polycarboxylic slump retaining agent according to claim 1, which is characterized in that the sustained release
The solid content of type polycarboxylic acid slump retaining agent is 40%.
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Families Citing this family (7)
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| CN107033290A (en) * | 2016-12-07 | 2017-08-11 | 岳阳东方雨虹防水技术有限责任公司 | A kind of super sustained-release polycarboxylic water reducer and its normal temperature preparation method |
| CN108219045A (en) * | 2016-12-21 | 2018-06-29 | 宜宾市杰特曼建材有限公司 | A kind of collapse protection type high efficiency water reducing agent and its production technology |
| CN108219055A (en) * | 2016-12-21 | 2018-06-29 | 宜宾市杰特曼建材有限公司 | A kind of long-acting slump retaining agent and preparation method thereof |
| CN106947029B (en) * | 2017-03-27 | 2019-06-14 | 南宁新泰瑞科建材股份有限公司 | A kind of high-performance polycarboxylic acid slump retaining agent and preparation method thereof |
| CN108794699A (en) * | 2018-07-04 | 2018-11-13 | 苏州科技大学 | A kind of preparation method of sustained release high collapse protection type polycarboxylate water-reducer |
| CN112707673B (en) * | 2020-09-15 | 2022-04-19 | 科之杰新材料集团有限公司 | Super-shrinkage type polycarboxylate superplasticizer and preparation method thereof |
| CN116750988A (en) * | 2023-08-11 | 2023-09-15 | 天津市扬天环保科技有限公司 | Slow-release type polycarboxylic acid concrete water reducer with good fluidity and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103881029A (en) * | 2014-04-17 | 2014-06-25 | 山东卓星化工有限公司 | Heat source-free short-time preparation method of controlled-release type polycarboxylic acid high-performance slump retaining agent |
| CN103897119A (en) * | 2014-04-17 | 2014-07-02 | 山东卓星化工有限公司 | Room temperature synthesis method for polycarboxylic acid high slump retaining water reducer |
| CN104193915A (en) * | 2014-08-21 | 2014-12-10 | 广东瑞安科技实业有限公司 | Slow-release type polycarboxylic acid slump retaining agent and preparation method thereof |
| CN104371073A (en) * | 2014-10-30 | 2015-02-25 | 中铁四局集团有限公司 | Normal-temperature preparation method of slow-release polycarboxylate superplasticizer |
| CN105085822A (en) * | 2015-08-07 | 2015-11-25 | 科之杰新材料集团有限公司 | Sludge-proof type polycarboxylate water-reducer and normal temperature preparing method thereof |
-
2016
- 2016-04-08 CN CN201610218756.2A patent/CN105884979B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103881029A (en) * | 2014-04-17 | 2014-06-25 | 山东卓星化工有限公司 | Heat source-free short-time preparation method of controlled-release type polycarboxylic acid high-performance slump retaining agent |
| CN103897119A (en) * | 2014-04-17 | 2014-07-02 | 山东卓星化工有限公司 | Room temperature synthesis method for polycarboxylic acid high slump retaining water reducer |
| CN104193915A (en) * | 2014-08-21 | 2014-12-10 | 广东瑞安科技实业有限公司 | Slow-release type polycarboxylic acid slump retaining agent and preparation method thereof |
| CN104371073A (en) * | 2014-10-30 | 2015-02-25 | 中铁四局集团有限公司 | Normal-temperature preparation method of slow-release polycarboxylate superplasticizer |
| CN105085822A (en) * | 2015-08-07 | 2015-11-25 | 科之杰新材料集团有限公司 | Sludge-proof type polycarboxylate water-reducer and normal temperature preparing method thereof |
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