CN105985045A - Rear earth tailing added polycarboxylate superplasticizer - Google Patents
Rear earth tailing added polycarboxylate superplasticizer Download PDFInfo
- Publication number
- CN105985045A CN105985045A CN201610025635.6A CN201610025635A CN105985045A CN 105985045 A CN105985045 A CN 105985045A CN 201610025635 A CN201610025635 A CN 201610025635A CN 105985045 A CN105985045 A CN 105985045A
- Authority
- CN
- China
- Prior art keywords
- parts
- sodium
- rare earth
- water
- deionized water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
- C04B24/2641—Polyacrylates; Polymethacrylates
- C04B24/2647—Polyacrylates; Polymethacrylates containing polyether side chains
-
- 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
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a rear earth tailing added polycarboxylate superplasticizer. The polycarboxylate superplasticizer is prepared from, 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 mercaptoacetic acid, 13-14 parts of lignin, appropriate amount of sodium hydroxide solution with concentration being 10wt%, appropriate amount of deionized water, 26-28 parts of graphene oxide, 2-3 parts of sodium dodecyl benzene sulfonate, 11-13 parts of rare earth tailings, 0.6-0.7 part of sodium hexametaphosphate, 0.3-0.4 part of sodium tripolyphosphate, 2-3 parts of cerous nitrate and 4-5 parts of EVA (ethylene-vinyl acetate) latex. The superplasticizer is capable of effectively improving grain boundary energy of cement products to improve compactness of an internal structure of concrete, and accordingly concrete strength is improved, durability is further improved, and defects caused by low strength in industrial production can be reduced.
Description
Technical field
The present invention relates to technical field of concrete additives, particularly relate to a kind of high-efficiency water-reducing agent of poly-carboxylic acid adding rare earth tailings.
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 a kind of high-efficiency water-reducing agent of poly-carboxylic acid adding rare earth tailings.
The present invention is achieved by the following technical solutions:
A kind of high-efficiency water-reducing agent of poly-carboxylic acid adding rare earth tailings, 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 appropriate, graphene oxide 26-28, dodecylbenzene sodium sulfonate 2-3, rare earth tailings 11-13, sodium hexameta phosphate 0.6-0.7, sodium tripolyphosphate 0.3-0.4, cerous nitrate 2-3, EVA latex 4-5.
Described a kind of high-efficiency water-reducing agent of poly-carboxylic acid adding rare earth tailings, 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) rare earth tailings is put into the temperature drying with 90-100 DEG C in baking oven, it is then placed in ball mill, add discharging after sodium hexameta phosphate mixing and ball milling 40-60 minute, compound will add the deionized water of total amount 2-3 times, continuously adding dodecylbenzene sodium sulfonate, cerous nitrate and remaining residual components after stirring, the speed dispersed with stirring with 500-600 rev/min is uniform；
(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.
The present invention processes rare earth tailings by compositions such as suitable process sodium hexameta phosphate, dodecylbenzene sodium sulfonate, the mortar made has good mobility, coordinate the interpolation of cerous nitrate, the water reducer made, the crystal boundary energy of cement product can be effectively improved so that the inside composition of concrete is more closely knit, thus improves the intensity of concrete, durability the most further improves, and can reduce the defect caused in commercial production because intensity is not enough.
Detailed description of the invention
A kind of high-efficiency water-reducing agent of poly-carboxylic acid adding rare earth tailings, 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 appropriate, graphene oxide 26, dodecylbenzene sodium sulfonate 2, rare earth tailings 11, sodium hexameta phosphate 0.6, sodium tripolyphosphate 0.3, cerous nitrate 2, EVA latex 4.
Described a kind of high-efficiency water-reducing agent of poly-carboxylic acid adding rare earth tailings, 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) rare earth tailings is put into the temperature drying with 90 DEG C in baking oven, it is then placed in ball mill, add the discharging after 40 minutes of sodium hexameta phosphate mixing and ball milling, compound will add the deionized water of total amount 2 times, continuously adding dodecylbenzene sodium sulfonate, cerous nitrate and remaining residual components after stirring, the speed dispersed with stirring with 500 revs/min is uniform；
(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 is up to 30.1%, and bleeding rate is 25.9%, 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 high-efficiency water-reducing agent of poly-carboxylic acid adding rare earth tailings, 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, dodecylbenzene sodium sulfonate 2-3, rare earth tailings 11-13, sodium hexameta phosphate 0.6-0.7, sodium tripolyphosphate 0.3-0.4, cerous nitrate 2-3, EVA latex 4-5.
A kind of high-efficiency water-reducing agent of poly-carboxylic acid adding rare earth tailings, 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) rare earth tailings is put into the temperature drying with 90-100 DEG C in baking oven, it is then placed in ball mill, add discharging after sodium hexameta phosphate mixing and ball milling 40-60 minute, compound will add the deionized water of total amount 2-3 times, continuously adding dodecylbenzene sodium sulfonate, cerous nitrate and remaining residual components after stirring, the speed dispersed with stirring with 500-600 rev/min is uniform；
(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 |
|---|---|---|---|
| CN201610025635.6A CN105985045A (en) | 2016-01-15 | 2016-01-15 | Rear earth tailing added polycarboxylate superplasticizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610025635.6A CN105985045A (en) | 2016-01-15 | 2016-01-15 | Rear earth tailing added polycarboxylate superplasticizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105985045A true CN105985045A (en) | 2016-10-05 |
Family
ID=57040700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610025635.6A Pending CN105985045A (en) | 2016-01-15 | 2016-01-15 | Rear earth tailing added polycarboxylate superplasticizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105985045A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113185180A (en) * | 2021-05-20 | 2021-07-30 | 厦门稀土材料研究所 | Rare earth functional polycarboxylic acid superplasticizer and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 CN201610025635.6A patent/CN105985045A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 (3)
| Title |
|---|
| 李东光: "《水泥混凝土外加剂配方与制备》", 31 January 2011, 中国纺织出版社 * |
| 汪永清等: ""离子型稀土尾砂用于建筑陶瓷制备中的泥浆解胶研究"", 《硅酸盐通报》 * |
| 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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113185180A (en) * | 2021-05-20 | 2021-07-30 | 厦门稀土材料研究所 | Rare earth functional polycarboxylic acid superplasticizer and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105985052A (en) | Efficient polycarboxylic acid water reducing agent with additional modified celluloses | |
| CN103524091B (en) | The non-evaporating preparation method supporting ultralight foamed concrete of flyash in great mixed amount | |
| CN103342491B (en) | Iron tailings based composite mineral blending material and preparation technology thereof | |
| CN105985051A (en) | Efficient water reducing agent with additional modified starch and function of improving performance of concrete | |
| CN102910889B (en) | Aerated concrete wall material containing river silt and preparation method thereof | |
| CN101423356A (en) | Environment-friendly type alkali-free liquid accelerator for sprayed concrete and preparation method thereof | |
| CN111410502B (en) | Anhydrite-based light plastering mortar and preparation method thereof | |
| CN105801063A (en) | Light-weight, heat-insulating and environment-friendly composite wall building material | |
| CN102464475B (en) | Method for producing superhigh strength prestressed concrete pipe pile in low carbon mode | |
| CN102219465A (en) | Formula design of novel cement-based insulation dry powder | |
| CN103979812B (en) | High-performance high-activity concrete admixture | |
| CN105985048A (en) | Lignin-graphene oxide composite modified polycarboxylic acid efficient water reducing agent | |
| CN103360013B (en) | A kind of preparation method of gypsum base thermal insulation mortar | |
| CN105985047A (en) | Modified polycarboxylate water reducer capable of improving strength of concrete | |
| CN114988791A (en) | Flue grouting material doped with sulfur-rich lithium slag and preparation method and application thereof | |
| CN109384412B (en) | Ordinary silicate concrete coagulant | |
| CN103755280A (en) | Foam concrete block for building envelope and preparation method thereof | |
| CN104163607A (en) | Autoclaved aerated concrete block | |
| CN103408312B (en) | Aluminum-silicon-based lightweight castable and preparation method thereof | |
| CN105819778A (en) | Preparation method of light, thermal insulation, and environment-friendly composite wall construction material | |
| CN102875191B (en) | Preparation process for aerated concrete block | |
| CN105985045A (en) | Rear earth tailing added polycarboxylate superplasticizer | |
| CN105985053A (en) | Retarding composite polycarboxylic superplasticizer | |
| CN105985500A (en) | Water reducer capable of improving adhesiveness of concrete | |
| CN105985054A (en) | Efficient water reducing agent for improving frost resistance and dispersibility of concrete |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161005 |
|
| RJ01 | Rejection of invention patent application after publication |