CN103964731B - A kind of polycarboxylate water-reducer and preparation method thereof - Google Patents
A kind of polycarboxylate water-reducer and preparation method thereof Download PDFInfo
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Abstract
A kind of polycarboxylate water-reducer of the present invention and preparation method thereof, belongs to water reducer technical field; Technical problem to be solved is to provide a kind of new polycarboxylic acid water reducer, and its preparation method is provided; The technical scheme adopting is: a kind of polycarboxylate water-reducer, comprise the raw material of following weight portion proportioning: 357 parts of methacrylic APEOs, hydrogen peroxide 1.97-2.77 part of 35%, acrylic acid 36.6-41.4 part, TGA 0.96-1.36 part, vitamin C? 0.95-1.35 part, water 490-505 part.
Description
Technical field
A kind of polycarboxylate water-reducer of the present invention and preparation method thereof, belongs to water reducer technical field.
Background technology
Water reducer refers under concrete workability and cement consumption permanence condition, can reduce mixing water amount, improve concrete strength; Or under workability and intensity permanence condition, save the additive of cement consumption. Common classification has: lignosulfonates, naphthalene sulfonate water reducer, melamine based water reducer, powder polycarboxylate, casein and polycarboxylate high performance water-reducing agent.
A kind of Concrete superplastizer (water reducer) that polycarboxylate high performance water-reducing agent is current forefront in the world, scientific and technological content is the highest, application prospect is best, combination property is optimum. Polycarboxylate high performance water-reducing agent is the composite product of carboxylic acids grafting multiple copolymer and other effective auxiliary agent. Through showing with similar products at home and abroad Performance Ratio, polycarboxylate high performance water-reducing agent is all reaching current international most advanced level aspect technical performance index, cost performance.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, and technical problem to be solved is to provide a kind of new polycarboxylic acid water reducer, and its preparation method is provided.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of polycarboxylate water-reducer, comprise the raw material of following weight portion proportioning: 357 parts of methacrylic APEOs, hydrogen peroxide 1.97-2.77 part of 35%, acrylic acid 36.6-41.4 part, TGA 0.96-1.36 part, vitamin C 0.95-1.35 part, water 490-505 part; Preparation in accordance with the following steps:
1) raw material is prepared:
The preparation of A solution: successively described TGA and vitamin C are added in 115-120 part water, be stirred to the two and dissolve completely, solution is as clear as crystal, obtains A solution, for subsequent use;
The preparation of B solution: described acrylic acid is added in 26-34 part water, be stirred to completely and dissolve, obtain B solution, for subsequent use;
The preparation of C solution: described methacrylic APEO is added in 347 parts of water, be stirred to abundant dissolving, solution is slight paste shape, obtains C solution, for subsequent use;
The preparation of compounding agent solution: 35% hydrogen peroxide is added to 2-4 part water, stir evenly, obtain compounding agent solution, for subsequent use;
The preparation of aqueous slkali: get 200-207 part sheet alkali and add in 810-820 part water, be stirred to completely and dissolve, solution is as clear as crystal, obtains aqueous slkali, for subsequent use;
2) polymerisation
The temperature of C solution is controlled to 60-70 DEG C, compounding agent solution is slowly added in C solution, stir 5-6min; Then drip A solution and B solution, control A solution and drip off for 3.5 hours, B solution drips off for 3 hours; Drip off after A solution and B solution, mixed liquor is incubated to 1h at 60-65 DEG C; Then add aqueous slkali neutralization, and be cooled to 55 DEG C, obtain polycarboxylate water-reducer.
As preferred a kind of polycarboxylate water-reducer, comprise the raw material of following weight portion proportioning: 357 parts of methacrylic APEOs, 2.57 parts, 35% hydrogen peroxide, 37.8 parts, acrylic acid, 1.06 parts of TGAs, 1.15 parts of vitamin Cs, 498.42 parts, water; Preparation in accordance with the following steps:
1) raw material is prepared:
The preparation of A solution: successively described TGA and vitamin C are added in 118.25 parts of water, be stirred to the two and dissolve completely, solution is as clear as crystal, obtains A solution, for subsequent use;
The preparation of B solution: described acrylic acid is added in 30.6 parts of water, be stirred to completely and dissolve, obtain B solution, for subsequent use;
The preparation of C solution: described methacrylic APEO is added in 347 parts of water, be stirred to abundant dissolving, solution is slight paste shape, obtains C solution, for subsequent use;
The preparation of compounding agent solution: 35% hydrogen peroxide is added to 2.57 parts of water, stir evenly, obtain compounding agent solution, for subsequent use;
The preparation of aqueous slkali: get 204 parts of sheet alkali and add in 816 parts of water, be stirred to completely and dissolve, solution is as clear as crystal, obtains aqueous slkali, for subsequent use;
2) polymerisation
The temperature of C solution is controlled to 60-70 DEG C, compounding agent solution is slowly added in C solution, stir 5-6min; Then drip A solution and B solution, control A solution and drip off for 3.5 hours, B solution drips off for 3 hours; Drip off after A solution and B solution, mixed liquor is incubated to 1h at 60-65 DEG C; Then add aqueous slkali neutralization, and be cooled to 55 DEG C, obtain polycarboxylate water-reducer.
In the process for preparation of described C solution, uniform speed slow heats up, and after fully dissolving, rises to 55 DEG C, is incubated for subsequent use.
Described A solution drips after 5min, then drips B solution.
Compared with prior art the present invention has following beneficial effect.
1, volume is low, water-reducing rate is high, and water-reducing rate can be up to 45%;
2, when the slump is light, lose littlely, Slump Loss in Ready Mixed Concrete rate 1h is less than 5%, 2h and is less than 10%;
3, enhancing effect is remarkable, and concrete 3d compression strength improves 50～110%, 28d compression strength and improves 40～80%, 90d compression strength raising 30～60%;
4, concrete workability is good, without segregation, excreting water phenomenon, concrete appearance color homogeneous. While being used for preparing high-grade concrete, concrete cohesiveness good and be easy to stir;
5, air content is moderate, and modulus of elasticity of concrete is had no adverse effect, and Frost Resistance is good;
6, the heat-transmission of cement early water be can reduce, mass concrete and hot weather construction are conducive to;
7, adaptability is good, and cement, admixture compatibility are good, and thermal adaptability is good, has good compatibility with different cultivars cement and admixture, has solved other class water reducer and the poor problem of Binder Materials compatibility of adopting;
8, low contraction, can obviously reduce concrete shrinkage, and freezing-thawing resistance and anti-carbonization ability are obviously better than normal concrete; Significantly improve volume stability of concrete and long durability;
9, alkali content is extremely low, and alkali content≤0.2% can prevent the generation of alkali-aggregate reaction effectively
10, product stability is good, and long term storage occurs without layering, deposited phenomenon, when low temperature without crystallization;
11, Product Green environmental protection, containing formaldehyde, is not environmentally friendly product;
12, good in economic efficiency, engineering comprehensive cost is lower than using other type products, with saving cement 15-25% under strength condition.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
A kind of polycarboxylate water-reducer, comprises the raw material of following weight portion proportioning: 357 parts of methacrylic APEOs, 2.77 parts, 35% hydrogen peroxide, 41.4 parts, acrylic acid, 1.36 parts of TGAs, 1.35 parts of vitamin Cs, 505 parts, water; Preparation in accordance with the following steps:
1) raw material is prepared:
The preparation of A solution: successively described TGA and vitamin C are added in 120 parts of water, be stirred to the two and dissolve completely, solution is as clear as crystal, obtains A solution, for subsequent use;
The preparation of B solution: described acrylic acid is added in 34 parts of water, be stirred to completely and dissolve, obtain B solution, for subsequent use;
The preparation of C solution: described methacrylic APEO is added in 347 parts of water, be stirred to abundant dissolving, solution is slight paste shape, obtains C solution, for subsequent use;
The preparation of compounding agent solution: 35% hydrogen peroxide is added to 4 parts of water, stir evenly, obtain compounding agent solution, for subsequent use;
The preparation of aqueous slkali: get 207 parts of sheet alkali and add in 820 parts of water, be stirred to completely and dissolve, solution is as clear as crystal, obtains aqueous slkali, for subsequent use;
2) polymerisation
The temperature of C solution is controlled to 60-70 DEG C, compounding agent solution is slowly added in C solution, stir 5min; Then drip A solution and B solution, control A solution and drip off for 3.5 hours, B solution drips off for 3 hours; Drip off after A solution and B solution, mixed liquor is incubated to 1h at 60-65 DEG C; Then add aqueous slkali neutralization, and be cooled to 55 DEG C, obtain polycarboxylate water-reducer.
Embodiment 2
A kind of polycarboxylate water-reducer, comprises the raw material of following weight portion proportioning: 357 parts of methacrylic APEOs, 2.57 parts, 35% hydrogen peroxide, 37.8 parts, acrylic acid, 1.06 parts of TGAs, 1.15 parts of vitamin Cs, 498.42 parts, water; Preparation in accordance with the following steps:
1) raw material is prepared:
The preparation of A solution: successively described TGA and vitamin C are added in 118.25 parts of water, be stirred to the two and dissolve completely, solution is as clear as crystal, obtains A solution, for subsequent use;
The preparation of B solution: described acrylic acid is added in 30.6 parts of water, be stirred to completely and dissolve, obtain B solution, for subsequent use;
The preparation of C solution: described methacrylic APEO is added in 347 parts of water, be stirred to abundant dissolving, solution is slight paste shape, obtains C solution, for subsequent use;
The preparation of compounding agent solution: 35% hydrogen peroxide is added to 2.57 parts of water, stir evenly, obtain compounding agent solution, for subsequent use;
The preparation of aqueous slkali: get 204 parts of sheet alkali and add in 816 parts of water, be stirred to completely and dissolve, solution is as clear as crystal, obtains aqueous slkali, for subsequent use;
2) polymerisation
The temperature of C solution is controlled to 60-70 DEG C, compounding agent solution is slowly added in C solution, stir 5min; Then drip A solution and B solution, control A solution and drip off for 3.5 hours, B solution drips off for 3 hours; Drip off after A solution and B solution, mixed liquor is incubated to 1h at 60-65 DEG C; Then add aqueous slkali neutralization, and be cooled to 55 DEG C, obtain polycarboxylate water-reducer.
Embodiment 3
A kind of polycarboxylate water-reducer, comprises the raw material of following weight portion proportioning: 357 parts of methacrylic APEOs, 2.37 parts, 35% hydrogen peroxide, 40.2 parts, acrylic acid, 1.26 parts of TGAs, 1.25 parts of vitamin Cs, 502 parts, water; Preparation in accordance with the following steps:
1) raw material is prepared:
The preparation of A solution: successively described TGA and vitamin C are added in 119 parts of water, be stirred to the two and dissolve completely, solution is as clear as crystal, obtains A solution, for subsequent use;
The preparation of B solution: described acrylic acid is added in 33 parts of water, be stirred to completely and dissolve, obtain B solution, for subsequent use;
The preparation of C solution: described methacrylic APEO is added in 347 parts of water, be stirred to abundant dissolving, solution is slight paste shape, obtains C solution, for subsequent use;
The preparation of compounding agent solution: 35% hydrogen peroxide is added to 3 parts of water, stir evenly, obtain compounding agent solution, for subsequent use;
The preparation of aqueous slkali: get 206 parts of sheet alkali and add in 818 parts of water, be stirred to completely and dissolve, solution is as clear as crystal, obtains aqueous slkali, for subsequent use;
2) polymerisation
The temperature of C solution is controlled to 60-70 DEG C, compounding agent solution is slowly added in C solution, stir 5.5min; Then drip A solution and B solution, control A solution and drip off for 3.5 hours, B solution drips off for 3 hours; Drip off after A solution and B solution, mixed liquor is incubated to 1h at 60-65 DEG C; Then add aqueous slkali neutralization, and be cooled to 55 DEG C, obtain polycarboxylate water-reducer.
Embodiment 4
A kind of polycarboxylate water-reducer, comprises the raw material of following weight portion proportioning: 357 parts of methacrylic APEOs, 2.17 parts, 35% hydrogen peroxide, 39 parts, acrylic acid, 1.16 parts of TGAs, 1.05 parts of vitamin Cs, 494.5 parts, water; Preparation in accordance with the following steps:
1) raw material is prepared:
The preparation of A solution: successively described TGA and vitamin C are added in 116 parts of water, be stirred to the two and dissolve completely, solution is as clear as crystal, obtains A solution, for subsequent use;
The preparation of B solution: described acrylic acid is added in 28 parts of water, be stirred to completely and dissolve, obtain B solution, for subsequent use;
The preparation of C solution: described methacrylic APEO is added in 347 parts of water, slowly heat up in adding procedure, be stirred to abundant dissolving, solution is slight paste shape, obtains C solution, and now temperature rises to 55 DEG C, is incubated for subsequent use;
The preparation of compounding agent solution: 35% hydrogen peroxide is added to 3.5 parts of water, stir evenly, obtain compounding agent solution, for subsequent use;
The preparation of aqueous slkali: get 202 parts of sheet alkali and add in 814 parts of water, be stirred to completely and dissolve, solution is as clear as crystal, obtains aqueous slkali, for subsequent use;
2) polymerisation
The temperature of C solution is controlled to 60-70 DEG C, compounding agent solution is slowly added in C solution, stir 5.5min; Then drip A solution and B solution, control A solution and drip off for 3.5 hours, B solution drips off for 3 hours; Drip off after A solution and B solution, mixed liquor is incubated to 1h at 60-65 DEG C; Then add aqueous slkali neutralization, and be cooled to 55 DEG C, obtain polycarboxylate water-reducer.
Embodiment 5
A kind of polycarboxylate water-reducer, comprises the raw material of following weight portion proportioning: 357 parts of methacrylic APEOs, 1.97 parts, 35% hydrogen peroxide, 36.6 parts, acrylic acid, 0.96 part of TGA, 0.95 part of vitamin C, 490 parts, water; Preparation in accordance with the following steps:
1) raw material is prepared:
The preparation of A solution: successively described TGA and vitamin C are added in 115 parts of water, be stirred to the two and dissolve completely, solution is as clear as crystal, obtains A solution, for subsequent use;
The preparation of B solution: described acrylic acid is added in 26 parts of water, be stirred to completely and dissolve, obtain B solution, for subsequent use;
The preparation of C solution: described methacrylic APEO is added in 347 parts of water, slowly heat up in adding procedure, be stirred to abundant dissolving, solution is slight paste shape, obtains C solution, and now temperature rises to 55 DEG C, is incubated for subsequent use;
The preparation of compounding agent solution: 35% hydrogen peroxide is added to 2 parts of water, stir evenly, obtain compounding agent solution, for subsequent use;
The preparation of aqueous slkali: get 200 parts of sheet alkali and add in 810 parts of water, be stirred to completely and dissolve, solution is as clear as crystal, obtains aqueous slkali, for subsequent use;
2) polymerisation
The temperature of C solution is controlled to 60-70 DEG C, compounding agent solution is slowly added in C solution, stir 6min; Then drip A solution and B solution, control A solution and drip off for 3.5 hours, B solution drips off for 3 hours, and wherein A solution is than the Zao 5min that drips of B solution; Drip off after A solution and B solution, mixed liquor is incubated to 1h at 60-65 DEG C; Then add aqueous slkali neutralization, and be cooled to 55 DEG C, obtain polycarboxylate water-reducer.
Embodiment 6
A kind of polycarboxylate water-reducer, comprises the raw material of following weight portion proportioning: 357 parts of methacrylic APEOs, 2.57 parts, 35% hydrogen peroxide, 37.8 parts, acrylic acid, 1.06 parts of TGAs, 1.15 parts of vitamin Cs, 498.42 parts, water; Preparation in accordance with the following steps:
1) raw material is prepared:
The preparation of A solution: successively described TGA and vitamin C are added in 118.25 parts of water, be stirred to the two and dissolve completely, solution is as clear as crystal, obtains A solution, for subsequent use;
The preparation of B solution: described acrylic acid is added in 30.6 parts of water, be stirred to completely and dissolve, obtain B solution, for subsequent use;
The preparation of C solution: described methacrylic APEO is added in 347 parts of water, slowly heat up in adding procedure, be stirred to abundant dissolving, solution is slight paste shape, obtains C solution, and now temperature rises to 55 DEG C, is incubated for subsequent use;
The preparation of compounding agent solution: 35% hydrogen peroxide is added to 2.57 parts of water, stir evenly, obtain compounding agent solution, for subsequent use;
The preparation of aqueous slkali: get 204 parts of sheet alkali and add in 816 parts of water, be stirred to completely and dissolve, solution is as clear as crystal, obtains aqueous slkali, for subsequent use;
2) polymerisation
The temperature of C solution is controlled to 60-70 DEG C, compounding agent solution is slowly added in C solution, stir 6min; Then drip A solution and B solution, control A solution and drip off for 3.5 hours, B solution drips off for 3 hours, and wherein A solution is than the Zao 5min that drips of B solution; Drip off after A solution and B solution, mixed liquor is incubated to 1h at 60-65 DEG C; Then add aqueous slkali neutralization, and be cooled to 55 DEG C, obtain polycarboxylate water-reducer.
The present invention can summarize with other the concrete form without prejudice to spirit of the present invention or principal character. Therefore, no matter from which point, above-mentioned embodiment of the present invention all can only think explanation of the present invention can not limit invention, claims have been pointed out scope of the present invention, and scope of the present invention is not pointed out in above-mentioned explanation, therefore, any variation in implication and the scope suitable with claims of the present invention, all should think to be included in the scope of claims.
Claims (3)
1. a polycarboxylate water-reducer, is characterized in that comprising the raw material of following weight portion proportioning: 357 parts of methacrylic APEOs, 2.57 parts, 35% hydrogen peroxide, 37.8 parts, acrylic acid, 1.06 parts of TGAs, 1.15 parts of vitamin Cs, 498.42 parts, water;
Preparation method comprises the steps:
1) raw material is prepared:
The preparation of A solution: successively described TGA and vitamin C are added in 118.25 parts of water, be stirred to the two and dissolve completely, solution is as clear as crystal, obtains A solution, for subsequent use;
The preparation of B solution: described acrylic acid is added in 30.6 parts of water, be stirred to completely and dissolve, obtain B solution, for subsequent use;
The preparation of C solution: described methacrylic APEO is added in 347 parts of water, be stirred to abundant dissolving, solution is slight paste shape, obtains C solution, for subsequent use;
The preparation of compounding agent solution: 35% hydrogen peroxide is added to 2.57 parts of water, stir evenly, obtain compounding agent solution, for subsequent use;
The preparation of aqueous slkali: get 204 parts of sheet alkali and add in 816 parts of water, be stirred to completely and dissolve, solution is as clear as crystal, obtains aqueous slkali, for subsequent use;
2) polymerisation
The temperature of C solution is controlled to 60-70 DEG C, compounding agent solution is slowly added in C solution, stir 5-6min; Then drip A solution and B solution, control A solution and drip off for 3.5 hours, B solution drips off for 3 hours; Drip off after A solution and B solution, mixed liquor is incubated to 1h at 60-65 DEG C; Then add aqueous slkali neutralization, and be cooled to 55 DEG C, obtain the polycarboxylate water-reducer of alkali content≤0.2%.
2. a kind of polycarboxylate water-reducer according to claim 1, is characterized in that: in the process for preparation of described C solution, uniform speed slow heats up, and after fully dissolving, rises to 55 DEG C, is incubated for subsequent use.
3. a kind of polycarboxylate water-reducer according to claim 1, is characterized in that: described A solution drips after 5min, then drips B solution.
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| CN105859980A (en) * | 2016-06-08 | 2016-08-17 | 柳州市强威锻造厂 | Slow-release type polycarboxylate water reducer |
| CN106380552A (en) * | 2016-09-29 | 2017-02-08 | 湖北工业大学 | High-adaptability polycarboxylic acid water reducing agent master batch |
| CN108218277A (en) * | 2016-12-21 | 2018-06-29 | 宜宾市杰特曼建材有限公司 | Hot type water-reducing agent and preparation method thereof |
| 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 |
| CN106632894A (en) * | 2017-01-04 | 2017-05-10 | 云南宸磊建材有限公司 | Comprehensive polycarboxylate superplasticizer and preparation method thereof |
| CN107629171A (en) * | 2017-10-18 | 2018-01-26 | 汕头市汇强外加剂有限公司 | A kind of production method of non-evaporating curing concrete pile tube new polycarboxylic acid water reducer |
| CN109879627A (en) * | 2019-02-15 | 2019-06-14 | 陕西瑞星建材科技有限公司 | Polycarboxylate water-reducer and its preparation process |
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| CN103373832B (en) * | 2012-04-17 | 2015-05-13 | 苏琳 | High-performance anti-cracking anticorrosive water reducing agent composition and preparation method thereof |
| CN102910857A (en) * | 2012-08-02 | 2013-02-06 | 烟台市正源防水保温工程有限公司 | Production process of poly carboxylic acid water reducer |
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