CN106698993A - Polycarboxylate water reducer - Google Patents
Polycarboxylate water reducer Download PDFInfo
- Publication number
- CN106698993A CN106698993A CN201710123543.6A CN201710123543A CN106698993A CN 106698993 A CN106698993 A CN 106698993A CN 201710123543 A CN201710123543 A CN 201710123543A CN 106698993 A CN106698993 A CN 106698993A
- Authority
- CN
- China
- Prior art keywords
- reducer
- water reducer
- polycarboxylate water
- water
- papermaking waste
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- 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.)
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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
- 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)
- Paper (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a polycarboxylate water reducer. The modified polycarboxylate water reducer is prepared by mixing a pulp of a white clay of a papermaking waste, heating, evenly mixing with a corn straw, then adding lauryl sodium sulfate, stirring, drying, and extruding into blocks to obtain a block material for later use; hydrolyzing, and adjusting the pH value of a straw hydrolysate to 6.0-7.0 with CaO to obtain a hydrolysate for later use; drying, oxidizing and sulfonating the hydrolysate, adding into a polycarboxylate-type water reducer, stirring evenly, and treating through ultrasonic waves for 1-2 hours. The papermaking waste is used to manufacture the water reducer, the waste is well turned into the wealth, the strong base in the papermaking waste pretreats the corn straw, so that the corn straw is better pickled for hydrolysis; the substances like cellulose produced after the hydrolysis of the corn straw improve the water reducing effect of the water reducer after being oxidized and sulfonated, meanwhile, the polycarboxylate water reducer also plays a role in lubricating the concrete.
Description
Technical field
It is exactly a kind of polycarboxylate water-reducer the present invention relates to water reducer field.
Background technology
Polycarboxylate water-reducer is a kind of high-performance water reducing agent, is a kind of cement dispersants during cement concrete is used.Extensively
It is general to be applied to the engineerings such as highway, bridge, dam, tunnel, skyscraper.The product environmental protection, nonflammable, non-explosive, Ke Yian
It is complete to use train and Automobile Transportation.
Existing polycarboxylate water-reducer technical matters is more ripe, and further the space of development is smaller, therefore in recent years
Carry out the main work that conducted a research in terms of new raw material and new technology of researcher.The A of CN 106064898 propose a kind of modified mixed
The preparation technology of solidifying soil water reducer, using water reducer and the collective effect of Ce elements, reaches the effect for improving water reducer performance, but
Ce elements raw material sources are limited, are unfavorable for promoting.The B of CN 102604005 propose a kind of how by simple technique and honest and clean
The performance that the raw material that valency is easy to get improves polycarboxylate water-reducer is a major issue urgently to be resolved hurrily.
The content of the invention
It is an object of the invention to provide a kind of polycarboxylate water-reducer.
Above-mentioned purpose is realized by following scheme：
A kind of polycarboxylate water-reducer, it is characterised in that：Preparation method is comprised the following steps：
（1）Papermaking waste material white clay is put in mixing cirtern, is tuned into the slurry that solid content is 10-30%；Slurry is heated to 40-50
DEG C, then mixed with maize straw, lauryl sodium sulfate is added, after stirring 50-80min, dry, extrude blocking, obtain block
Shape material is standby；
（2）Acid solution is injected in reactor to lump material is saturated with, after 40-60min, then pressure is kept in 0.3-0.4MPa1-2h
Afterwards, stalk hydrolyzate is obtained, pH is adjusted to 4.0-6.0, obtains hydrolyzate standby；
（3）After hydrolyzate drying, it is the liquor potassic permanganate of 0.05-0.1M, oxidation reaction 1-2h under normal temperature, water to add concentration
Wash, after drying, after add sodium hydrogensulfite equivalent to dried feed 9-15%, sulfonating reaction 1- is carried out to it at 50-60 DEG C
2h, obtains sulfonation material standby；
（4）1-5 mass parts sulfonation material are added in the poly carboxylic acid series water reducer that 90-110 mass parts, solid content are 20-30%,
Stir and use ultrasonication 1-2 hours, obtain modified polycarboxylic acid based water reducer.
A kind of described polycarboxylate water-reducer, it is characterised in that：Described acid strength is 0.5-1.5%.
A kind of described polycarboxylate water-reducer, it is characterised in that：The CaCO of papermaking waste material white clay3Content is 50-70%,
NaOH residual quantities are 2-4%.
A kind of described polycarboxylate water-reducer, it is characterised in that：Papermaking waste material white clay, maize straw, dodecyl sulphate
The mass ratio of sodium is 20:18-22：1-2.
Beneficial effects of the present invention are：
（1）Byproduct in papermaking waste material white clay system pulp production produced by alkali collection production technology, its main component is
CaCO3.Due to its byproduct CaCO3 In the NaOH containing residual, and NaOH is highly basic, and serious its waste that have impact on makes
With generally as the buried treatment of waste material, waste material is substantial amounts of buried and severe contamination soil, plant is grown, for a long time
Going down will cause the heavy damage of environment, papermaking waste material can be good at turning waste into wealth for manufacturing water reducer, using it
In highly basic pre-treatment is carried out to maize straw so that it preferably can be hydrolyzed in pickling；
（2）The cellulosic hydrolysates produced after maize straw hydrolysis are mainly cellulose, hemicellulose, xylose etc., sulfonation with
The sulfonated cellulose for obtaining afterwards, sulfonic group and hydroxyl strong hydrophilicity group in sulfonated cellulose, can be with water shape by charge attraction
Into hydrogen bond, so as to increase hydrophily so that absorption can form one layer of hydration shell in the sulfonated water reducing agent of cement surface, so that broken
Bad cement granules flocculent structure, moreover it is possible to so that the relative motion between cement granules becomes easy, play a part of lubrication；Simultaneously
Sulfonated cellulose is presented divergent shape on solid-liquid surface, belongs to random ball of string absorption, can produce larger space obstacle, prevents
The reunion of cement granules, so as to the flocculation for preventing cement granules is lumpd.
Specific embodiment
A kind of polycarboxylate water-reducer, preparation method is comprised the following steps：
（1）Papermaking waste material white clay is put in mixing cirtern, is tuned into the slurry that solid content is 25%；Slurry is heated to 45 DEG C, then with
Maize straw is mixed, and adds lauryl sodium sulfate, after stirring 60min, is dried, and extrudes blocking, obtains lump material standby；
The CaCO of papermaking waste material white clay3Content is that 50%, NaOH residual quantities are 4%.
Papermaking waste material white clay, maize straw, the mass ratio of lauryl sodium sulfate are 20:18-22：1-2.
（2）Acid solution is injected in reactor to lump material is saturated with, after 60min, then pressure is kept in 0.3-0.4MPa 1h
Afterwards, stalk hydrolyzate is obtained, stalk hydrolyzate pH is adjusted to 6 using CaO, obtain hydrolyzate standby；Described acid strength is
1.5%；
（3）After hydrolyzate drying, it is the liquor potassic permanganate of 0.05M to add concentration, and oxidation reaction 2h under normal temperature, washing is done
After dry, after add sodium hydrogensulfite equivalent to dried feed 10%, sulfonating reaction 2h is carried out to it at 60 DEG C, obtain sulfonation material standby
With；
（4）5 mass parts sulfonation material are added in the poly carboxylic acid series water reducer that 100 mass parts, solid content are 20-30%, stirring is equal
It is even and with ultrasonication 2 hours, obtain modified polycarboxylic acid based water reducer.
Claims (4)
1. a kind of polycarboxylate water-reducer, it is characterised in that：Preparation method is comprised the following steps：
（1）Papermaking waste material white clay is put in mixing cirtern, is tuned into the slurry that solid content is 10-30%；Slurry is heated to 40-50
DEG C, then mixed with maize straw, lauryl sodium sulfate is added, after stirring 50-80min, dry, extrude blocking, obtain block
Shape material is standby；
（2）Acid solution is injected in reactor to lump material is saturated with, after 40-60min, then pressure is kept in 0.3-0.4MPa1-2h
Afterwards, stalk hydrolyzate is obtained, pH is adjusted to 4.0-6.0, obtains hydrolyzate standby；
（3）After hydrolyzate drying, it is the liquor potassic permanganate of 0.05-0.1M, oxidation reaction 1-2h under normal temperature, water to add concentration
Wash, after drying, after add sodium hydrogensulfite equivalent to dried feed 9-15%, sulfonating reaction 1- is carried out to it at 50-60 DEG C
2h, obtains sulfonation material standby；
（4）1-5 mass parts sulfonation material are added in the poly carboxylic acid series water reducer that 90-110 mass parts, solid content are 20-30%,
Stir and use ultrasonication 1-2 hours, obtain modified polycarboxylic acid based water reducer.
2. a kind of polycarboxylate water-reducer according to claim 1, it is characterised in that：Described acid strength is 0.5-
1.5%.
3. a kind of polycarboxylate water-reducer according to claim 1, it is characterised in that：The CaCO of papermaking waste material white clay3Content is
50-70%, NaOH residual quantity are 2-4%.
4. a kind of polycarboxylate water-reducer according to claim 1, it is characterised in that：Papermaking waste material white clay, maize straw, ten
The mass ratio of sodium dialkyl sulfate is 20:18-22：1-2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710123543.6A CN106698993A (en) | 2017-03-03 | 2017-03-03 | Polycarboxylate water reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710123543.6A CN106698993A (en) | 2017-03-03 | 2017-03-03 | Polycarboxylate water reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106698993A true CN106698993A (en) | 2017-05-24 |
Family
ID=58912081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710123543.6A Pending CN106698993A (en) | 2017-03-03 | 2017-03-03 | Polycarboxylate water reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106698993A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058575A (en) * | 2012-12-26 | 2013-04-24 | 上海浦东路桥建设股份有限公司 | Renewable plant cellulose water reducing agent for cements |
| CN104446113A (en) * | 2014-11-18 | 2015-03-25 | 桂林华越环保科技有限公司 | High-performance polycarboxylate water reducer |
| CN104630307A (en) * | 2014-12-24 | 2015-05-20 | 山东龙力生物科技股份有限公司 | Bio-refinery integrated process for separating and classifying whole-plant corn component |
-
2017
- 2017-03-03 CN CN201710123543.6A patent/CN106698993A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058575A (en) * | 2012-12-26 | 2013-04-24 | 上海浦东路桥建设股份有限公司 | Renewable plant cellulose water reducing agent for cements |
| CN104446113A (en) * | 2014-11-18 | 2015-03-25 | 桂林华越环保科技有限公司 | High-performance polycarboxylate water reducer |
| CN104630307A (en) * | 2014-12-24 | 2015-05-20 | 山东龙力生物科技股份有限公司 | Bio-refinery integrated process for separating and classifying whole-plant corn component |
Non-Patent Citations (2)
| Title |
|---|
| 孙振平等: "聚羧酸系减水剂与其他减水剂复配性能的研究", 《建筑材料学报》 * |
| 鞠美庭等: "《生物质固废资源化技术手册》", 31 March 2014 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |