CN110041467A - A kind of preparation method of high-thin arch dam cement water reducing agent - Google Patents
A kind of preparation method of high-thin arch dam cement water reducing agent Download PDFInfo
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- CN110041467A CN110041467A CN201910211958.8A CN201910211958A CN110041467A CN 110041467 A CN110041467 A CN 110041467A CN 201910211958 A CN201910211958 A CN 201910211958A CN 110041467 A CN110041467 A CN 110041467A
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- Prior art keywords
- reducing agent
- added
- preparation
- water reducing
- arch dam
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Classifications
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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
- C04B24/16—Sulfur-containing compounds
- C04B24/161—Macromolecular compounds comprising sulfonate or sulfate groups
- C04B24/163—Macromolecular compounds comprising sulfonate or sulfate groups obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/165—Macromolecular compounds comprising sulfonate or sulfate groups obtained by reactions only involving carbon-to-carbon unsaturated bonds 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
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (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 kind of preparation methods of high-thin arch dam cement water reducing agent, include the following steps: raw material preparation, heating, dissolution, and oxydol H P is added, polymerization reaction, finished product；The beneficial effects of the present invention are: using isoamyl alcohol polyoxyethylene ether TPEG, hydroxy-ethyl acrylate HEA, acrylic acid AA etc. has developed a kind of cement water reducing agent of low diminishing high-thin arch dam, the water-reducing agent can hydrolyze under concrete alkaline environment and release carboxylic group, to reach the slump and divergence holding effect.
Description
Technical field
The invention belongs to cement water reducing agent preparation technical fields, and in particular to a kind of system of high-thin arch dam cement water reducing agent
Preparation Method.
Background technique
Poly carboxylic acid series water reducer is main chain and pfpe molecule side as made of a kind of negatively charged carboxylic monomer polymerization
The comb-shaped polymer that chain is constituted.On the one hand, main chain is adsorbed on cement particle surface prevention particle and contacts with water, carboxyl, sulfonic group
Electrostatic repulsion is provided, while in conjunction with calcium, forming stable rich calcium protective layer；On the other hand, long side chain, a small amount of hydroxyl and water
Hydrogen bond is formed, the protection of moisture film solid and space steric effect is generated, considerably increases the thickness of hydrated sheath, delay hydrated cementitious.
Poly carboxylic acid series water reducer plays cement granules and divides by the steric hindrance of long side chain and the anion electrostatic repulsive force of short-side chain
It dissipates and disperses the effect kept, with the increase of polyethers dosage, long side chain graft density increases, and a large amount of long side chain protrudes into liquid phase
In, the protection of space multistory moisture film is provided, separates cement granules, slump retaining gradually increases, and the long side chain of high density plays slump retaining
Important function.
There is also many problems in actual application for cement water reducing agent, such as very with the adaptability of some cement
Bad, the slump-loss for showing as concrete is big, concrete dry, hard, and poor fluidity or even workability are also than two generation products
Want poor；Overwhelming majority Concrete Mixing Station build urban fringe in now, along with urban congestion phenomenon is increasingly sharpened, often
Fresh concrete will get to construction site by the transport of one or two hours, along with the time of waiting, toward habitually in the past up to three
Four hours could discharging, at this moment the slump-loss of fresh concrete is excessive, has been difficult to discharging, leads to next vehicle again etc.
Wait eventually form vicious circle.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation methods of high-thin arch dam cement water reducing agent, to solve above-mentioned background skill
What is proposed in art is such as very bad with the adaptability of some cement, and the slump-loss for showing as concrete is big, concrete dry,
Firmly, poor fluidity or even workability are also poorer than two generation products；Overwhelming majority Concrete Mixing Station build city in now
Edge, along with urban congestion phenomenon is increasingly sharpened, often fresh concrete will be got to by the transport of one or two hours
Construction site, along with the time of waiting, toward habitually in the past up to three or four hours could discharging, at this moment the slump of fresh concrete is damaged
Lose it is excessive, the problem of being difficult to discharging, next vehicle caused to wait again, eventually form vicious circle.
To achieve the above object, the invention provides the following technical scheme: a kind of preparation side of high-thin arch dam cement water reducing agent
Method includes the following steps:
Step 1: raw material preparation: isoamyl alcohol polyoxyethylene ether TPEG, mercaptopropionic acid BMPA1, methylpropene sodium sulfonate
MAS, acrylic acid AA, hydroxy-ethyl acrylate HEA, maleic anhydride M-5, vitamin C, sodium hydrate aqueous solution, oxydol H P, over cure
Sour ammonium APS, deionized water；
Step 2: it is poly- that prenol heating, dissolution: is added into the round-bottomed flask of the 500ml equipped with thermometer, blender
Ethylene oxide ether TPEG, methylpropene sodium sulfonate MAS and deionized water, stirring heating, and dissolved, obtain mixed liquor；
Step 3: oxydol H P is added: oxydol H P being added in the mixed liquor of step 2；
Step 4: to being added in the mixed liquor of oxydol H P, acrylic acid AA and hydroxy-ethyl acrylate polymerization reaction: is added dropwise
The mixing A liquid of HEA is added dropwise mercaptopropionic acid BMPA1, maleic anhydride M-5, vitamin C is added, the B that ammonium persulfate APS is made into is added dropwise
Liquid keeps the temperature it；
Step 5: finished product: cooling down to it after heat preservation, and it is 5-7, moisturizing that sodium hydrate aqueous solution, which is added, and is neutralized to pH value
It is 40% to solid content, high-thin arch dam cement water reducing agent can be obtained.
As a preferred technical solution of the invention, in the step 2, stirring is warming up to 45-55 DEG C.
As a preferred technical solution of the invention, in the step 4, A liquid 2.8-3.2h is added dropwise, B liquid
3.3-3.7h being added dropwise.
As a preferred technical solution of the invention, in the step 4,0.8-1.2h is kept the temperature.
As a preferred technical solution of the invention, in the step 5, it is cooled to 40 DEG C or less.
As a preferred technical solution of the invention, in the step 5,30% sodium hydrate aqueous solution is added
Being neutralized to pH value is 5-7.
Compared with prior art, the beneficial effects of the present invention are:
A kind of low diminishing is had developed using isoamyl alcohol polyoxyethylene ether TPEG, hydroxy-ethyl acrylate HEA, acrylic acid AA etc.
The cement water reducing agent of high-thin arch dam, which can hydrolyze under concrete alkaline environment and release carboxylic group, to reach
The slump and divergence keep effect.
Detailed description of the invention
Fig. 1 is preparation flow figure of the invention.
Specific embodiment
Embodiment 1
A kind of preparation method of high-thin arch dam cement water reducing agent, includes the following steps:
Step 1: raw material preparation: isoamyl alcohol polyoxyethylene ether TPEG, mercaptopropionic acid BMPA1, methylpropene sodium sulfonate
MAS, acrylic acid AA, hydroxy-ethyl acrylate HEA, maleic anhydride M-5, vitamin C, sodium hydrate aqueous solution, oxydol H P, over cure
Sour ammonium APS, deionized water；
Step 2: it is poly- that prenol heating, dissolution: is added into the round-bottomed flask of the 500ml equipped with thermometer, blender
Ethylene oxide ether TPEG, methylpropene sodium sulfonate MAS and deionized water, stirring is warming up to 45 DEG C, and is dissolved, and is mixed
Liquid；
Step 3: oxydol H P is added: oxydol H P being added in the mixed liquor of step 2；
Step 4: to being added in the mixed liquor of oxydol H P, acrylic acid AA and hydroxy-ethyl acrylate polymerization reaction: is added dropwise
The mixing A liquid of HEA is added dropwise mercaptopropionic acid BMPA1, maleic anhydride M-5, vitamin C is added, the B that ammonium persulfate APS is made into is added dropwise
Liquid, A liquid 2.8h are added dropwise, and B liquid 3.3h is added dropwise, and carry out heat preservation 0.8h to it；
Step 5: finished product: carry out being cooled to 40 DEG C after heat preservation to it hereinafter, 30% sodium hydrate aqueous solution neutralization is added
It is 5 to pH value, moisturizing to solid content is 40%, and high-thin arch dam cement water reducing agent can be obtained.
Embodiment 2
The embodiment 2 is identical as the preparation method in embodiment 1, and difference is:
In step 2, stirring is warming up to 50 DEG C.
In step 4, A liquid 3.0h is added dropwise, and B liquid 3.5h is added dropwise.
In step 4,1.0h is kept the temperature.
In step 5, be added 30% sodium hydrate aqueous solution be neutralized to pH value be 6.
Embodiment 3
The embodiment 3 is identical as the preparation method in embodiment 1, and difference is:
In step 2, stirring is warming up to 55 DEG C.
In step 4, A liquid 3.2h is added dropwise, and B liquid 3.7h is added dropwise.
In step 4,1.2h is kept the temperature.
In step 5, be added 30% sodium hydrate aqueous solution be neutralized to pH value be 7.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of preparation method of high-thin arch dam cement water reducing agent, which comprises the steps of:
Step 1: raw material preparation: isoamyl alcohol polyoxyethylene ether TPEG, mercaptopropionic acid BMPA1, methylpropene sodium sulfonate MAS, third
Olefin(e) acid AA, hydroxy-ethyl acrylate HEA, maleic anhydride M-5, vitamin C, sodium hydrate aqueous solution, oxydol H P, ammonium persulfate
APS, deionized water；
Step 2: prenol polyoxy second heating, dissolution: is added into the round-bottomed flask of the 500ml equipped with thermometer, blender
Alkene ether TPEG, methylpropene sodium sulfonate MAS and deionized water, stirring heating, and dissolved, obtain mixed liquor；
Step 3: oxydol H P is added: oxydol H P being added in the mixed liquor of step 2；
Step 4: polymerization reaction: to being added in the mixed liquor of oxydol H P, it is added dropwise acrylic acid AA's and hydroxy-ethyl acrylate HEA
Mixing A liquid is added dropwise mercaptopropionic acid BMPA1, maleic anhydride M-5, vitamin C is added, the B liquid that ammonium persulfate APS is made into is added dropwise, right
It is kept the temperature；
Step 5: finished product: cooling down to it after heat preservation, and it is 5-7 that sodium hydrate aqueous solution, which is added, and is neutralized to pH value, and moisturizing is to admittedly
Content is 40%, and high-thin arch dam cement water reducing agent can be obtained.
2. a kind of preparation method of high-thin arch dam cement water reducing agent according to claim 1, it is characterised in that: the step
In two, stirring is warming up to 45-55 DEG C.
3. a kind of preparation method of high-thin arch dam cement water reducing agent according to claim 1, it is characterised in that: the step
In four, A liquid 2.8-3.2h is added dropwise, and B liquid 3.3-3.7h is added dropwise.
4. a kind of preparation method of high-thin arch dam cement water reducing agent according to claim 1, it is characterised in that: the step
In four, 0.8-1.2h is kept the temperature.
5. a kind of preparation method of high-thin arch dam cement water reducing agent according to claim 1, it is characterised in that: the step
In five, it is cooled to 40 DEG C or less.
6. a kind of preparation method of high-thin arch dam cement water reducing agent according to claim 1, it is characterised in that: the step
In five, the sodium hydrate aqueous solution for being added 30% is neutralized to pH value as 5-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910211958.8A CN110041467A (en) | 2019-03-20 | 2019-03-20 | A kind of preparation method of high-thin arch dam cement water reducing agent |
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| CN201910211958.8A CN110041467A (en) | 2019-03-20 | 2019-03-20 | A kind of preparation method of high-thin arch dam cement water reducing agent |
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| CN110041467A true CN110041467A (en) | 2019-07-23 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815882A (en) * | 2012-08-03 | 2012-12-12 | 山西科腾环保科技有限公司 | High-performance water reducer of polycarboxylic acid, and preparation method thereof |
| CN104446093A (en) * | 2014-12-04 | 2015-03-25 | 河北铁园科技发展有限公司 | Polycarboxylate-based water reducing agent with integrated functions of water reduction and slump retaining |
| CN105199054A (en) * | 2015-09-17 | 2015-12-30 | 河北三楷深发科技股份有限公司 | Synthetic technology of slump-retaining polycarboxylic type water reducer |
-
2019
- 2019-03-20 CN CN201910211958.8A patent/CN110041467A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815882A (en) * | 2012-08-03 | 2012-12-12 | 山西科腾环保科技有限公司 | High-performance water reducer of polycarboxylic acid, and preparation method thereof |
| CN104446093A (en) * | 2014-12-04 | 2015-03-25 | 河北铁园科技发展有限公司 | Polycarboxylate-based water reducing agent with integrated functions of water reduction and slump retaining |
| CN105199054A (en) * | 2015-09-17 | 2015-12-30 | 河北三楷深发科技股份有限公司 | Synthetic technology of slump-retaining polycarboxylic type water reducer |
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Application publication date: 20190723 |