CN105985055A - Environment-friendly efficient water reducing agent with excellent corrosion resistance - Google Patents
Environment-friendly efficient water reducing agent with excellent corrosion resistance Download PDFInfo
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- CN105985055A CN105985055A CN201610025726.XA CN201610025726A CN105985055A CN 105985055 A CN105985055 A CN 105985055A CN 201610025726 A CN201610025726 A CN 201610025726A CN 105985055 A CN105985055 A CN 105985055A
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- reducing agent
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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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)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses an environment-friendly efficient water reducing agent with excellent corrosion resistance. The water reducing agent is prepared by, by weight, 240-250 parts of TPEG, 25.2-26.0 parts of acrylic acid, 1.6-1.65 parts of ammonium persulfate, 0.53-0.55 part of thioglycolic acid, 13-14 parts of lignin, an appropriate amount of sodium hydroxide solution with the concentration being 10wt%, an appropriate amount of deionized water, 26-28 parts of graphene oxide, 2-3 parts of urea, 1.3-1.5 parts of sodium pyrithione, 0.8-1 part of potassium sorbate, 9-11 parts of polypropylene fiber, 2-3 parts of OP-10, 4.5-5 parts of molybdenum disulfide, 6-7 parts of quartz powder and 2-3 parts of EVA latex. The environment-friendly efficient water reducing agent has the advantages that the water reducing agent is scientific and reasonable in component proportion; the polypropylene fiber is added to be matched with the molybdenum disulfide, so that the dispersity of the water reducing agent in concrete can be increased, and the crack resistance of the concrete can be increased; components such as the sodium pyrithione are added to allow the water reducing agent to have excellent corrosion resistance.
Description
Technical field
The present invention relates to technical field of concrete additives, particularly relate to the environmental-friendhigh-efficiency high-efficiency water reducing admixture that a kind of antiseptic property is excellent.
Background technology
Polycarboxylate high performance water-reducing agent, as the important composition material of preparation high performance concrete, the guarantor outstanding advantages such as plasticity good, shrinkage factor low, high performance potentiality big high by its water-reducing rate, is widely used in the key projects such as high ferro, bridge, nuclear power, water power.But, polycarboxylate high performance water-reducing agent mother solution performance is the most single, it is impossible to meet different engineering field, the concrete of different performance requirement, greatly constrains extensively application and the development of polycarboxylate high performance water-reducing agent.Experts and scholars have carried out relatively systematic research by chemically and physically modified method to polycarboxylate high performance water-reducing agent both at home and abroad, achieve gratifying achievement.But these researchs are concentrated mainly on the performance improving polycarboxylate high performance water-reducing agent in a certain respect, such as spacetabs type, Xu are put type and utilize inexpensive monomers synthesis fall low-cost type, and the aspect such as multicomponent physics is compound, bring inconvenience so to compounding unit and construction enterprises, in use easily cause quality accident.
" experimental study of organic amine modified polycarboxylic acid series high-performance dehydragent " literary composition is for the problems referred to above the achievement in research that combines domestic and international expert, the polycarboxylate high performance water-reducing agent using organic amine to produce different manufacturers has carried out physics, chemical modification, the adaptability of cement is greatly improved by modified polycarboxylate high performance water-reducing agent, and the engineering that a kind of mother solution can be suitable for different requirement uses, it is achieved that the high performance of polycarboxylate high performance water-reducing agent mother solution, multifunction.But easily occur that bleeding, isolation, intensity are low, easily the problems such as crack occur when producing concrete, have impact on the use of water reducer, article does not illustrate for these shortcomings, need to be modified further.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that the environmental-friendhigh-efficiency high-efficiency water reducing admixture that a kind of antiseptic property is excellent.
The present invention is achieved by the following technical solutions:
The environmental-friendhigh-efficiency high-efficiency water reducing admixture that a kind of antiseptic property is excellent, is made up of the raw material of following weight portion: isopentenol polyoxyethylene ether 240-250, acrylic acid 25.2-26.0, Ammonium persulfate. 1.6-1.65, TGA 0.53-0.55, lignin 13-14, concentration are that the sodium hydroxide solution of 10wt% is appropriate, deionized water in right amount, graphene oxide 26-28, carbamide 2-3, sodium pyrithione 1.3-1.5, potassium sorbate 0.8-1, polypropylene fibre 9-11, OP-102-3, molybdenum bisuphide 4.5-5, silica flour 6-7, EVA latex 2-3.
The environmental-friendhigh-efficiency high-efficiency water reducing admixture that described a kind of antiseptic property is excellent, is made up of step in detail below:
(1) graphene oxide will add the deionized water of 4-5 times amount, put in ultrasonator ultrasonic 30-40 minute until being uniformly dispersed, then graphene oxide dispersion being put in the water-bath of 60-80 DEG C and heat, be slowly added to lignin, it is stand-by that dispersed with stirring forms mixture the most afterwards；
(2) reactor will add isopentenol polyoxyethylene ether, appropriate amount of deionized water, warming while stirring disposably adds Ammonium persulfate. after 60-70 DEG C, then be slowly added dropwise acrylic acid, mixture that TGA, step (1) obtain, control dripped complete in 3-3.5 hour, continue insulation reaction 60-90 minute, finally dripping the sodium hydroxide solution that concentration is 10wt% to be neutralized, regulation pH value is neutral, and solid content controls at 40%-45%；
(3) put into after polypropylene fibre being cut into segment in pulverizer and pulverize, mix with molybdenum bisuphide after crossing 80 mesh sieves, obtain mixed-powder A；By adding the deionized water of 12-14 times amount in OP-10, stirring and add above-mentioned mixed-powder A after fully dissolving, it is stand-by that dispersed with stirring is formed uniformly slurry；Urea is mixed with silica flour after melted, adds EVA latex after grinding 20-30 minute, put into extruding pelletization in comminutor, then granule is put into the temperature drying with 90-100 DEG C in baking oven, pulverizes, cross 100 mesh sieves, obtain mixed powder B；Mixed powder B is added in above-mentioned slurry, continuously add remaining residual components after dispersed with stirring is uniform, improve rotating speed to 600-800 rev/min, stir 20-30 minute；
(4) step (2) product is mixed with step (3) product, put in stirred tank, stir mixing with the speed of 600-800 rev/min and be uniformly dispersed and get final product.
The invention have the advantage that the present invention is by controlling the proportioning of isopentenol polyoxyethylene ether and acrylic monomers, thus prepare the water reducer with good dispersion, by polyreaction, lignin, graphene oxide are grafted in polyether-type water reducer molecule, the bleeding of water reducer can be reduced, improve graphene oxide dispersion in cement mortar simultaneously, microstructure to cement mortar has preferable regulating and controlling effect, concrete is played the effect of activeness and quietness, it is possible to improve the paste flowing degree of cement further.
Present component proportioning is scientific and reasonable, adds polypropylene fibre and coordinates with molybdenum bisuphide, it is possible to increase water reducer dispersibility in concrete, moreover it is possible to improves the crack resistance of concrete；It is also added with the compositions such as sodium pyrithione so that water reducer has the antiseptic property of excellence；The water reducer of the present invention is compared with water reducer of the prior art, and the pollution produced when energy consumption required during preparation and use is the least, environmentally friendly, is worth spread.
Detailed description of the invention
The environmental-friendhigh-efficiency high-efficiency water reducing admixture that a kind of antiseptic property is excellent, is made up of the raw material of following weight portion (kilogram): isopentenol polyoxyethylene ether 240, acrylic acid 25.2, Ammonium persulfate. 1.6, TGA 0.53, lignin 13, concentration are that the sodium hydroxide solution of 10wt% is appropriate, deionized water in right amount, graphene oxide 26, carbamide 2, sodium pyrithione 1.3, potassium sorbate 0.8, polypropylene fibre 9, OP, molybdenum bisuphide 4.5, silica flour 6, EVA latex 2.
The environmental-friendhigh-efficiency high-efficiency water reducing admixture that described a kind of antiseptic property is excellent, is made up of step in detail below:
(1) graphene oxide will add the deionized water of 4 times amount, put in ultrasonator ultrasonic 30 minutes until being uniformly dispersed, then graphene oxide dispersion being put in the water-bath of 60 DEG C and heat, be slowly added to lignin, it is stand-by that dispersed with stirring forms mixture the most afterwards；
(2) reactor will add isopentenol polyoxyethylene ether, appropriate amount of deionized water, warming while stirring disposably adds Ammonium persulfate. after 60 DEG C, then be slowly added dropwise acrylic acid, mixture that TGA, step (1) obtain, control dripped complete in 3 hours, continue insulation reaction 60 minutes, finally dripping the sodium hydroxide solution that concentration is 10wt% to be neutralized, regulation pH value is neutral, and solid content controls 40%%；
(3) put into after polypropylene fibre being cut into segment in pulverizer and pulverize, mix with molybdenum bisuphide after crossing 80 mesh sieves, obtain mixed-powder A；To add the deionized water of 12 times amount in OP, stir and add above-mentioned mixed-powder A after fully dissolving, it is stand-by that dispersed with stirring is formed uniformly slurry；Urea is mixed with silica flour after melted, adds EVA latex after grinding 20 minutes, put into extruding pelletization in comminutor, then granule is put into the temperature drying with 90 DEG C in baking oven, pulverizes, cross 100 mesh sieves, obtain mixed powder B；Mixed powder B is added in above-mentioned slurry, continuously add remaining residual components after dispersed with stirring is uniform, improve rotating speed to 600 revs/min, stir 20 minutes；
(4) step (2) product is mixed with step (3) product, put in stirred tank, stir mixing with the speed of 600 revs/min and be uniformly dispersed and get final product.
The water reducer excellent product performance that the present invention prepares, water-reducing rate up to 25.9%, bleeding rate 28.9%, volume of the present invention is cement consumption 1%, in the case of the identical ratio of mud compared with using ordinary water-reducing agent, the slump can be made to improve more than 15cm, comprcssive strength improves more than 18%.
Claims (2)
1. the environmental-friendhigh-efficiency high-efficiency water reducing admixture that an antiseptic property is excellent, it is characterized in that, be made up of the raw material of following weight portion: isopentenol polyoxyethylene ether 240-250, acrylic acid 25.2-26.0, Ammonium persulfate. 1.6-1.65, TGA 0.53-0.55, lignin 13-14, concentration are that the sodium hydroxide solution of 10wt% is appropriate, deionized water appropriate, graphene oxide 26-28, carbamide 2-3, sodium pyrithione 1.3-1.5, potassium sorbate 0.8-1, polypropylene fibre 9-11, OP-102-3, molybdenum bisuphide 4.5-5, silica flour 6-7, EVA latex 2-3.
The environmental-friendhigh-efficiency high-efficiency water reducing admixture that a kind of antiseptic property is excellent, it is characterised in that be made up of step in detail below:
(1) graphene oxide will add the deionized water of 4-5 times amount, put in ultrasonator ultrasonic 30-40 minute until being uniformly dispersed, then graphene oxide dispersion being put in the water-bath of 60-80 DEG C and heat, be slowly added to lignin, it is stand-by that dispersed with stirring forms mixture the most afterwards；
(2) reactor will add isopentenol polyoxyethylene ether, appropriate amount of deionized water, warming while stirring disposably adds Ammonium persulfate. after 60-70 DEG C, then be slowly added dropwise acrylic acid, mixture that TGA, step (1) obtain, control dripped complete in 3-3.5 hour, continue insulation reaction 60-90 minute, finally dripping the sodium hydroxide solution that concentration is 10wt% to be neutralized, regulation pH value is neutral, and solid content controls at 40%-45%；
(3) put into after polypropylene fibre being cut into segment in pulverizer and pulverize, mix with molybdenum bisuphide after crossing 80 mesh sieves, obtain mixed-powder A；By adding the deionized water of 12-14 times amount in OP-10, stirring and add above-mentioned mixed-powder A after fully dissolving, it is stand-by that dispersed with stirring is formed uniformly slurry；Urea is mixed with silica flour after melted, adds EVA latex after grinding 20-30 minute, put into extruding pelletization in comminutor, then granule is put into the temperature drying with 90-100 DEG C in baking oven, pulverizes, cross 100 mesh sieves, obtain mixed powder B；Mixed powder B is added in above-mentioned slurry, continuously add remaining residual components after dispersed with stirring is uniform, improve rotating speed to 600-800 rev/min, stir 20-30 minute；
(4) step (2) product is mixed with step (3) product, put in stirred tank, stir mixing with the speed of 600-800 rev/min and be uniformly dispersed and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610025726.XA CN105985055A (en) | 2016-01-15 | 2016-01-15 | Environment-friendly efficient water reducing agent with excellent corrosion resistance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610025726.XA CN105985055A (en) | 2016-01-15 | 2016-01-15 | Environment-friendly efficient water reducing agent with excellent corrosion resistance |
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| CN105985055A true CN105985055A (en) | 2016-10-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112521043A (en) * | 2020-12-15 | 2021-03-19 | 温州鼎玛建筑技术有限公司 | Concrete modified water reducing agent and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104402298A (en) * | 2014-10-31 | 2015-03-11 | 安徽省阜南绿原化工有限公司 | Synergist-added water-reducing agent causing no corrosion to reinforcement steel bar, and preparation method thereof |
| CN104788629A (en) * | 2014-12-17 | 2015-07-22 | 厦门路桥翔通建材科技有限公司 | Polycarboxylate water-reducing agent and normal-temperature preparation method thereof |
-
2016
- 2016-01-15 CN CN201610025726.XA patent/CN105985055A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104402298A (en) * | 2014-10-31 | 2015-03-11 | 安徽省阜南绿原化工有限公司 | Synergist-added water-reducing agent causing no corrosion to reinforcement steel bar, and preparation method thereof |
| CN104788629A (en) * | 2014-12-17 | 2015-07-22 | 厦门路桥翔通建材科技有限公司 | Polycarboxylate water-reducing agent and normal-temperature preparation method thereof |
Non-Patent Citations (1)
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| 高党国等: ""氧化石墨烯与聚羧酸减水剂单体共聚物的制备与性能"", 《精细化工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112521043A (en) * | 2020-12-15 | 2021-03-19 | 温州鼎玛建筑技术有限公司 | Concrete modified water reducing agent and preparation method thereof |
| CN112521043B (en) * | 2020-12-15 | 2022-04-19 | 金昌市润为化建有限责任公司 | Concrete modified water reducing agent and preparation method thereof |
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Application publication date: 20161005 |
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