CN105800991A - Sustained-release polycarboxylate superplasticizer and preparation method and application thereof - Google Patents
Sustained-release polycarboxylate superplasticizer and preparation method and application thereof Download PDFInfo
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- CN105800991A CN105800991A CN201610185183.8A CN201610185183A CN105800991A CN 105800991 A CN105800991 A CN 105800991A CN 201610185183 A CN201610185183 A CN 201610185183A CN 105800991 A CN105800991 A CN 105800991A
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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
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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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Abstract
The invention discloses sustained-release polycarboxylate superplasticizer and a preparation method and application thereof.The sustained-release polycarboxylate superplasticizer is prepared from, by weight, 50-58 parts of polymethylacrylic acid, 22-30 parts of castor beans, 5-12 parts of menthone, 8-15 parts of chitosan, 1-5 parts of potassium ferrate and 33-40 parts of formic acid.The castor beans are dried, smashed and sieved, cyclohexane is added into the sieved castor bean powder, sealing heating is conducted, and supernatant liquid is extracted after filtering; the supernatant liquid and chitosan are mixed, sealing heating is conducted, and a mixture A is obtained; polymethylacrylic acid and formic acid are mixed, deionized water is added, heating and stirring are conducted, menthone is added, heating and stirring are conducted, and a mixture B is obtained; the mixture A and the mixture B are mixed, and after heating and stirring are conducted, potassium ferrate is added, heating is conducted, and the sustained-release polycarboxylate superplasticizer is prepared.The sustained-release polycarboxylate superplasticizer has sustained-release performance, the water reducing efficiency is higher, good water reducing performance and slump retaining performance are shown, the sustained-release polycarboxylate superplasticizer also has the defoaming function, sources of the raw materials are wide, the production technology is simple, cost is low, no environment pollution is caused, and the sustained-release polycarboxylate superplasticizer is suitable for industrial production.
Description
Technical field
The present invention relates to building material technical field, specifically a kind of sustained-release polycarboxylic water reducer and its production and use.
Background technology
Water reducer is a kind of under conditions of maintaining concrete slump constant, can reduce the concrete admixture of mixing water amount.Mostly belong to anion surfactant, have lignosulfonates, naphthalene sulphonate formaldehyde polymer etc..After adding concrete mix, cement granules there is is peptizaiton, its workability can be improved, reduce unit consumption of water, improve the mobility of concrete mix；Or minimizing unit cement consumption, save cement.
According to chemical composition composition is generally divided into: lignin sulfonate water reducer class, naphthalene series high-efficiency water-reducing agent class, melamine superplasticizer class, Amino-sulfonic Acid-based Water-reducer class, fatty acid series height water reducer class, polycarboxylate high-efficiency water-reducing agent class.Wherein, polycarboxylate high performance water-reducing agent (liquid) is to be the third generation high-performance water reducing agent grown up after the ordinary water-reducing agent of representative and the high efficiency water reducing agent with naphthalene system as representative continue wood calcium, is at present forefront, scientific and technological content is the highest, application prospect is best, combination property is optimum a kind of high efficiency water reducing agent the most in the world.But it is difficult to control to during owing to polycarboxylic acids itself has certain bleed ability, constructing in addition, vibrating, causes interior formwork too much, affect surface quality, durability and corrosion resistance are also had a significant impact.It is therefore desirable to a kind of polycarboxylate water-reducer of research also has defoaming function while obtaining high-performance water-reducing effect.
Summary of the invention
It is an object of the invention to provide that a kind of diminishing is in hgher efficiency, function of slump protection good, the sustained-release polycarboxylic water reducer with defoaming function and its production and use, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the present invention provides following technical scheme:
A kind of sustained-release polycarboxylic water reducer, is made up of according to the raw material of weight portion following: polymethylacrylic acid 50-58 part, Semen Ricini 22-30 part, menthone 5-12 part, chitin 8-15 part, potassium ferrate 1-5 part, formic acid 33-40 part.
As the further scheme of the present invention: described sustained-release polycarboxylic water reducer, it is made up of according to the raw material of weight portion following: polymethylacrylic acid 52-56 part, Semen Ricini 24-28 part, menthone 7-10 part, chitin 10-13 part, potassium ferrate 2-4 part, formic acid 35-38 part.
As the further scheme of the present invention: described sustained-release polycarboxylic water reducer, it is made up of according to the raw material of weight portion following: polymethylacrylic acid 54 parts, Semen Ricini 26 parts, menthone 8 parts, chitin 11 parts, potassium ferrate 3 parts, 36 parts of formic acid.
The preparation method of described sustained-release polycarboxylic water reducer, comprises the steps of:
1) Semen Ricini is dried, pulverizes, crosses 100-200 mesh sieve, add the hexamethylene of its quality 25-30 times, be warming up to 50-55 DEG C, heated sealed stirring 20-30min, it is warming up to 60-65 DEG C again, heated sealed stirring 30-40min, crosses the Semen Ricini mixture after the leaching supernatant prepares process；
2) Semen Ricini mixture is mixed with chitin, and 65-70 DEG C of lower seal heated and stirred 20-30min, prepare mixture A；
3) polymethylacrylic acid is mixed with formic acid, be subsequently adding the deionized water of the two quality 15-18 times, be warming up to 85-90 DEG C, heated and stirred 30-40min, then it is cooled to 65-70 DEG C, adds menthone, and heated and stirred 50-60min at such a temperature；Prepare mixture B；
4) being mixed with mixture B by mixture A, add potassium ferrate at 65-70 DEG C after heated and stirred 8-12min, at 120-130 DEG C, heated and stirred i.e. obtains sustained-release polycarboxylic water reducer after processing 45-60min.
Described sustained-release polycarboxylic water reducer purposes in concrete.
The addition content of described sustained-release polycarboxylic water reducer is the 0.1-0.2% of concrete quality.
The addition content of described sustained-release polycarboxylic water reducer is the 0.16% of concrete quality.
Compared with prior art, the invention has the beneficial effects as follows:
Polycarboxylate water-reducer prepared by the present invention has slow release property under the common effect of each raw material, and diminishing is in hgher efficiency, shows good water-reducing property and function of slump protection, also has defoaming function.Raw material of the present invention is drawn materials extensively, and slump holding capacity is strong, and production technology is simple, and production cost is low, easy control of reaction conditions, and non-environmental-pollution is suitable to industrialized production.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention, a kind of sustained-release polycarboxylic water reducer, it is made up of according to the raw material of weight portion following: polymethylacrylic acid 50 parts, Semen Ricini 22 parts, menthone 5 parts, chitin 8 parts, potassium ferrate 1 part, 33 parts of formic acid.
Semen Ricini is dried, pulverizes, crosses 100 mesh sieves, add the hexamethylene of its quality 25 times, be warming up to 50 DEG C, heated sealed stirring 20min, then it is warming up to 60 DEG C, heated sealed stirring 30min, crosses the Semen Ricini mixture after the leaching supernatant prepares process.Semen Ricini mixture is mixed with chitin, and 65 DEG C of lower seal heated and stirred 20min, prepares mixture A.Polymethylacrylic acid is mixed with formic acid, is subsequently adding the deionized water of the two quality 15 times, be warming up to 85 DEG C, heated and stirred 30min, then it is cooled to 65 DEG C, adds menthone, and heated and stirred 50min at such a temperature；Prepare mixture B.Being mixed with mixture B by mixture A, add potassium ferrate at 65 DEG C after heated and stirred 8min, at 120 DEG C, heated and stirred i.e. obtains sustained-release polycarboxylic water reducer after processing 45min.
Embodiment 2
In the embodiment of the present invention, a kind of sustained-release polycarboxylic water reducer, it is made up of according to the raw material of weight portion following: polymethylacrylic acid 58 parts, Semen Ricini 30 parts, menthone 12 parts, chitin 15 parts, potassium ferrate 5 parts, 40 parts of formic acid.
Semen Ricini is dried, pulverizes, crosses 200 mesh sieves, add the hexamethylene of its quality 30 times, be warming up to 55 DEG C, heated sealed stirring 30min, then it is warming up to 65 DEG C, heated sealed stirring 40min, crosses the Semen Ricini mixture after the leaching supernatant prepares process.Semen Ricini mixture is mixed with chitin, and 70 DEG C of lower seal heated and stirred 30min, prepares mixture A.Polymethylacrylic acid is mixed with formic acid, is subsequently adding the deionized water of the two quality 18 times, be warming up to 90 DEG C, heated and stirred 40min, then it is cooled to 70 DEG C, adds menthone, and heated and stirred 60min at such a temperature；Prepare mixture B.Being mixed with mixture B by mixture A, add potassium ferrate at 70 DEG C after heated and stirred 12min, at 130 DEG C, heated and stirred i.e. obtains sustained-release polycarboxylic water reducer after processing 60min.
Embodiment 3
In the embodiment of the present invention, a kind of sustained-release polycarboxylic water reducer, it is made up of according to the raw material of weight portion following: polymethylacrylic acid 52 parts, Semen Ricini 24 parts, menthone 7 parts, chitin 10 parts, potassium ferrate 2 parts, 35 parts of formic acid.
Semen Ricini is dried, pulverizes, crosses 200 mesh sieves, add the hexamethylene of its quality 28 times, be warming up to 52 DEG C, heated sealed stirring 25min, then it is warming up to 62 DEG C, heated sealed stirring 35min, crosses the Semen Ricini mixture after the leaching supernatant prepares process.Semen Ricini mixture is mixed with chitin, and 70 DEG C of lower seal heated and stirred 25min, prepares mixture A.Polymethylacrylic acid is mixed with formic acid, is subsequently adding the deionized water of the two quality 18 times, be warming up to 87 DEG C, heated and stirred 35min, then it is cooled to 67 DEG C, adds menthone, and heated and stirred 55min at such a temperature；Prepare mixture B.Being mixed with mixture B by mixture A, add potassium ferrate at 70 DEG C after heated and stirred 10min, at 125 DEG C, heated and stirred i.e. obtains sustained-release polycarboxylic water reducer after processing 60min.
Embodiment 4
In the embodiment of the present invention, a kind of sustained-release polycarboxylic water reducer, it is made up of according to the raw material of weight portion following: polymethylacrylic acid 56 parts, Semen Ricini 28 parts, menthone 10 parts, chitin 13 parts, potassium ferrate 4 parts, 38 parts of formic acid.
Preparation process is consistent with embodiment 3.
Embodiment 5
In the embodiment of the present invention, a kind of sustained-release polycarboxylic water reducer, it is made up of according to the raw material of weight portion following: polymethylacrylic acid 54 parts, Semen Ricini 26 parts, menthone 8 parts, chitin 11 parts, potassium ferrate 3 parts, 36 parts of formic acid.
Preparation process is consistent with embodiment 3.
Comparative example 1
In addition to not containing Semen Ricini, its formula and preparation process are consistent with embodiment 5.
Comparative example 2
Containing only polymethylacrylic acid and Semen Ricini, its preparation process is consistent with embodiment 5.
The sample that embodiment 1-5 and comparative example 1-2 are prepared, contrast with the High-efficiency polycarboxylic acid water reducer PCE of prior art, use 42.5 cement, iso standard sand, survey fluidity and the rheological parameters' change with time of its glue sand according to GB 8077-2012 " Methods for testing uniformity of concrete admixture ".In order to measure its defoaming function, according to GB/T8077 2012 Methods for testing uniformity of concrete admixture, measure surface tension value by automatic interface tension test instrument.It is embodied as performance comparison data as shown in table 1.
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example 1 | Comparative example 2 | PCE sample | |
| The solid volume of folding | 0.16 | 0.16 | 0.16 | 0.16 | 0.16 | 0.16 | 0.16 | 0.16 |
| Initial flow degree | 280 | 285 | 290 | 295 | 295 | 210 | 120 | 270 |
| 0.5h fluidity | 260 | 265 | 275 | 275 | 280 | 160 | - | 210 |
| 1h fluidity | 220 | 220 | 235 | 240 | 245 | - | - | - |
| Surface tension value (mN/m) | 34 | 33 | 33 | 32 | 30 | 55 | 58 | 50 |
| The 0h slump/divergence (mm/mm) | 220/530 | 220/540 | 225/540 | 225/550 | 230/550 | 210/480 | 200/350 | 220/540 |
| The 1h slump/divergence (mm/mm) | 200/380 | 200/400 | 210/420 | 215/420 | 215/450 | 150/330 | 130/300 | 180/380 |
From table 1 it follows that slow release property, defoaming function and the function of slump protection of the embodiment of the present invention are superior to PCE sample, wherein the effect of embodiment 3-5 is preferable, and embodiment 5 is optimum.Comparative example 1-2 compared with Example 5, shows that the present invention works under the common effect of each raw material.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and without departing from the spirit or essential characteristics of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is limited by claims rather than described above, it is intended that all changes fallen in the implication of equivalency and scope of claim included in the present invention.
In addition, it is to be understood that, although this specification is been described by according to embodiment, but the most each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should can also be formed, through appropriately combined, other embodiments that it will be appreciated by those skilled in the art that as an entirety, the technical scheme in each embodiment by those skilled in the art.
Claims (7)
1. a sustained-release polycarboxylic water reducer, it is characterised in that be made up of according to the raw material of weight portion following: polymethylacrylic acid 50-58 part, Semen Ricini 22-30 part, menthone 5-12 part, chitin 8-15 part, potassium ferrate 1-5 part, formic acid 33-40 part.
Sustained-release polycarboxylic water reducer the most according to claim 1, it is characterized in that, be made up of according to the raw material of weight portion following: polymethylacrylic acid 52-56 part, Semen Ricini 24-28 part, menthone 7-10 part, chitin 10-13 part, potassium ferrate 2-4 part, formic acid 35-38 part.
Sustained-release polycarboxylic water reducer the most according to claim 2, it is characterised in that be made up of according to the raw material of weight portion following: polymethylacrylic acid 54 parts, Semen Ricini 26 parts, menthone 8 parts, chitin 11 parts, potassium ferrate 3 parts, 36 parts of formic acid.
4. the preparation method of the sustained-release polycarboxylic water reducer as described in claim 1-3 is arbitrary, it is characterised in that comprise the steps of:
1) Semen Ricini is dried, pulverizes, crosses 100-200 mesh sieve, add the hexamethylene of its quality 25-30 times, be warming up to 50-55 DEG C, heated sealed stirring 20-30min, it is warming up to 60-65 DEG C again, heated sealed stirring 30-40min, crosses the Semen Ricini mixture after the leaching supernatant prepares process；
2) Semen Ricini mixture is mixed with chitin, and 65-70 DEG C of lower seal heated and stirred 20-30min, prepare mixture A；
3) polymethylacrylic acid is mixed with formic acid, be subsequently adding the deionized water of the two quality 15-18 times, be warming up to 85-90 DEG C, heated and stirred 30-40min, then it is cooled to 65-70 DEG C, adds menthone, and heated and stirred 50-60min at such a temperature；Prepare mixture B；
4) being mixed with mixture B by mixture A, add potassium ferrate at 65-70 DEG C after heated and stirred 8-12min, at 120-130 DEG C, heated and stirred i.e. obtains sustained-release polycarboxylic water reducer after processing 45-60min.
5. the sustained-release polycarboxylic water reducer as described in claim 1-3 is arbitrary purposes in concrete.
The sustained-release polycarboxylic water reducer the most according to claim 5 purposes in concrete, it is characterised in that the addition content of described sustained-release polycarboxylic water reducer is the 0.1-0.2% of concrete quality.
The sustained-release polycarboxylic water reducer the most according to claim 6 purposes in concrete, it is characterised in that the addition content of described sustained-release polycarboxylic water reducer is the 0.16% of concrete quality.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396462A (en) * | 2016-10-13 | 2017-02-15 | 汪培杰 | Slump retaining type polycarboxylic acid water reducing agent, and preparation method and application thereof |
| CN106431061A (en) * | 2016-10-13 | 2017-02-22 | 赖高生 | Early strength polycarboxylic acid type water reducer, as well as preparation method and application thereof |
| CN106431064A (en) * | 2016-10-13 | 2017-02-22 | 赖高生 | Slow-release polycarboxylate water reducer as well as preparation method and application thereof |
| CN106830740A (en) * | 2017-03-17 | 2017-06-13 | 山东煜煌信息咨询有限公司 | A kind of additive for improving polycarboxylate water-reducer and component materials of concrete compatibility |
| CN107399920A (en) * | 2017-07-20 | 2017-11-28 | 内蒙古高远工程科技发展有限公司 | A kind of high performance water reducing agent of polyocarboxy acid and its preparation method and application |
| CN109251269A (en) * | 2018-08-02 | 2019-01-22 | 金陵科技学院 | The preparation method of modified natural chitin biology base high-performance polycarboxylic acids water reducing agent |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101735411A (en) * | 2010-01-08 | 2010-06-16 | 北京工业大学 | Method for preparing sustained-release polycarboxylic water reducer |
| CN103044634A (en) * | 2012-12-25 | 2013-04-17 | 江西迪特科技有限公司 | Preparation method for retarding polycarboxylate water reducing agent |
| CN103708760A (en) * | 2013-12-23 | 2014-04-09 | 宁波中水科化工科技有限公司 | Slow-setting polycarboxylic acid water reducing agent and preparation method thereof |
| CN104016615A (en) * | 2014-06-13 | 2014-09-03 | 石家庄市长安育才建材有限公司 | Slow release type efficient polycarboxylic acid water reducer and preparation method thereof |
-
2016
- 2016-03-29 CN CN201610185183.8A patent/CN105800991B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101735411A (en) * | 2010-01-08 | 2010-06-16 | 北京工业大学 | Method for preparing sustained-release polycarboxylic water reducer |
| CN103044634A (en) * | 2012-12-25 | 2013-04-17 | 江西迪特科技有限公司 | Preparation method for retarding polycarboxylate water reducing agent |
| CN103708760A (en) * | 2013-12-23 | 2014-04-09 | 宁波中水科化工科技有限公司 | Slow-setting polycarboxylic acid water reducing agent and preparation method thereof |
| CN104016615A (en) * | 2014-06-13 | 2014-09-03 | 石家庄市长安育才建材有限公司 | Slow release type efficient polycarboxylic acid water reducer and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396462A (en) * | 2016-10-13 | 2017-02-15 | 汪培杰 | Slump retaining type polycarboxylic acid water reducing agent, and preparation method and application thereof |
| CN106431061A (en) * | 2016-10-13 | 2017-02-22 | 赖高生 | Early strength polycarboxylic acid type water reducer, as well as preparation method and application thereof |
| CN106431064A (en) * | 2016-10-13 | 2017-02-22 | 赖高生 | Slow-release polycarboxylate water reducer as well as preparation method and application thereof |
| CN106830740A (en) * | 2017-03-17 | 2017-06-13 | 山东煜煌信息咨询有限公司 | A kind of additive for improving polycarboxylate water-reducer and component materials of concrete compatibility |
| CN107399920A (en) * | 2017-07-20 | 2017-11-28 | 内蒙古高远工程科技发展有限公司 | A kind of high performance water reducing agent of polyocarboxy acid and its preparation method and application |
| CN109251269A (en) * | 2018-08-02 | 2019-01-22 | 金陵科技学院 | The preparation method of modified natural chitin biology base high-performance polycarboxylic acids water reducing agent |
| CN109251269B (en) * | 2018-08-02 | 2020-10-30 | 金陵科技学院 | Preparation method of modified natural chitin bio-based high-performance polycarboxylate superplasticizer |
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