CN104530325B - A kind of preparation method of high-performance polycarboxylic acids water reducing agent - Google Patents
A kind of preparation method of high-performance polycarboxylic acids water reducing agent Download PDFInfo
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- CN104530325B CN104530325B CN201410836933.4A CN201410836933A CN104530325B CN 104530325 B CN104530325 B CN 104530325B CN 201410836933 A CN201410836933 A CN 201410836933A CN 104530325 B CN104530325 B CN 104530325B
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Abstract
The present invention relates to water reducer technical field, specially a kind of preparation method of high-performance polycarboxylic acids water reducing agent.The present invention is using allyl polyethenoxy ether as bed material, a certain amount of and concentration oxidant is added when temperature is increased to set point of temperature, stir the acrylic acid aqueous solution that high concentration is added dropwise after certain time simultaneously and regulation reduction mixed liquor, addition programs are simple, reaction condition is easily controllable, and product cost is high.The present invention can be made with strong applicability, the ethers polycarboxylic acid water reducing agent that water-reducing rate is high, function of slump protection is good by controlling process conditions.
Description
Technical field
The present invention relates to water reducer technical field, more particularly to a kind of preparation method of high-performance polycarboxylic acids water reducing agent.
Background technology
Polycarboxylic acids dehydragent is compared with the high efficiency water reducing agents such as naphthalene system, melamine series, sulfamate, and it has low-mix
Amount, water-reducing rate are big, fresh concrete mobility and slump retaining are good, shrinkage factor is low, it is environment-friendly, with cement and admixture and other
The features such as compatibility of additive is good, polycarboxylic acids dehydragent turn into recent years and Future Development with application Main way.
China makes great progress to the research and application aspect of polycarboxylic acids dehydragent in recent years, the use of polycarboxylic acids dehydragent
Amount is also being constantly increasing.
In recent years, it is not only simpler with production technology because ethers polycarboxylic acid water reducing agent compares esters polycarboxylate water-reducer
It is single, the advantages of cost performance is high, also collapsed ability with very high water-reducing rate and guarantor, therefore ethers polycarboxylic acid water reducing agent has turned into recent years
Come the focus studied.In the prior art, occur in that a variety of ethers polycarboxylic acids with different molecular structures and performance characteristics subtract
Aqua, but existing ethers polycarboxylic acid water reducing agent comes with some shortcomings, it is such as not strong to part of cement applicability, to clay content compared with
Easily there is the not enough defect of function of slump protection in the higher concrete of high, stone flour, and because water-reducing rate height easily excreting water phenomenon occurs, especially
It is in the concrete proportioning of middle low grade, and workability is bad.Therefore, a kind of performance of research and development is more superior, cost is relatively low, adaptability
Wider array of universal polycarboxylic water reducer is very necessary.
The content of the invention
The present invention is low for existing ethers polycarboxylic acid water reducing agent applicability, and water-reducing rate and function of slump protection need further to be carried
High the problem of, there is provided a kind of water-reducing rate is high, function of slump protection is good, strong applicability ethers polycarboxylic acid water reducing agent preparation method.
To achieve the above object, the present invention uses following technical scheme.
A kind of preparation method of high-performance polycarboxylic acids water reducing agent, comprises the following steps：
S1, allyl polyethenoxy ether and water be placed in reaction vessel, by the thing in reaction vessel while stirring
Matter is heated to 55-65 DEG C, and oxidant is then added into reaction vessel and 10min is stirred at 55-65 DEG C；The pi-allyl gathers
The mass ratio of oxygen vinethene and water is 38：22-24.
It is preferred that, the relative molecular weight of the allyl polyethenoxy ether is 2400.
S2, the temperature of the material made in reaction vessel are maintained at 55-65 DEG C and continue stirring, and same into reaction vessel
When acrylic acid aqueous solution and regulation-reduction mixed liquor is added dropwise；1-1.5h is incubated after completion of dropping；The regulation-reduction mixed liquor
For the aqueous solution containing chain tra nsfer conditioning agent and reducing agent；The mass ratio of the allyl polyethenoxy ether and acrylic acid is 380：
45-64。
It is preferred that, the mass percent of acrylic acid is 75-85% in the acrylic acid aqueous solution.It is furthermore preferred that acrylic acid
The time for adding of the aqueous solution is 170-190min.
S3, the material in reaction vessel is cooled to after 40-50 DEG C, pH to 6-7 is adjusted with alkaline solution.
The consumption of the oxidant is the 0.01-3% of the quality sum of allyl polyethenoxy ether and acrylic acid.It is preferred that
, the oxidant is hydrogen peroxide, and the concentration of hydrogen peroxide is 25-30%.
The consumption of the reducing agent is the 0.003-0.5% of the quality sum of allyl polyethenoxy ether and acrylic acid.
The consumption of the chain tra nsfer conditioning agent is the 0.01-1% of the quality sum of allyl polyethenoxy ether and acrylic acid.
It is preferred that, the chain tra nsfer conditioning agent is TGA or mercaptopropionic acid.
The mass percent sum of chain tra nsfer conditioning agent and reducing agent is 1.5-3% in the regulation-reduction mixed liquor.It is excellent
Choosing, the time for adding of regulation-reduction mixed liquor is 200-220min.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention treats temperature using allyl polyethenoxy ether as bed material
Degree adds a certain amount of and concentration oxidant when being increased to set point of temperature, the propylene of high concentration is added dropwise after stirring certain time simultaneously
Aqueous acid and regulation-reduction mixed liquor, addition programs are simple, and reaction condition is easily controllable, and product cost is high.The present invention is logical
Control process conditions are crossed, can be made with strong applicability, the ethers polycarboxylic acid water reducing agent that water-reducing rate is high, function of slump protection is good.Work as ether
When class polycarboxylate water-reducer volume converts into the 0.2-0.3% that pulvis is concrete gel material, water-reducing rate is anti-up to 28%, 3 day
Compressive Strength improves 80-100%, and setting time substantially shortens；Concrete workability can it is good, without air pocket, concrete appearance matter
Measure；Alkali content is low；Not chloride ion-containing, to reinforcing bar non-corrosiveness；Anti-freezing property and anti-carbonation can be functional；28 days shrinkage factors
More how be, aminosulfonate-based superplasticizer reduction by more than 20%.By ethers polycarboxylic acid water reducing agent strong applicability produced by the present invention, it can answer
With the cement with plurality of specifications, different model, properties of product are stable, store for a long time it is not stratified, without precipitation, winter does not crystallize, and
And nontoxic pollution-free, it is environmentally friendly.
Embodiment
In order to more fully understand the technology contents of the present invention, technical scheme is made with reference to specific embodiment
It is further described and illustrates.
Embodiment 1
By 380 parts of (referring to parts by weight, similarly hereinafter) allyl polyethenoxy ethers (relative molecular weight 2400) and 240 parts of deionized waters
It is put into reaction vessel, stirs and heat, the temperature of the material in reaction vessel is risen to 59-61 DEG C, in keeping temperature 59-61
At DEG C, stirring is completely dissolved added material.
The temperature of the material in reaction vessel is set to be maintained at 59-61 DEG C and continue stirring, and into reaction vessel once
Property 9 parts of concentration of input be 27% hydrogen peroxide；Stir after 10min, it is 80% that 60 parts of concentration are added dropwise simultaneously into reaction vessel
Acrylic acid aqueous solution and 80 parts of regulation-reduction mixed liquors (containing 0.6 part of vitamin C and 1.2 parts of mercaptopropionic acids), wherein, acrylic acid
The time for adding of the aqueous solution is 180min, and the time for adding of regulation-reduction mixed liquor is 210min.
After completion of dropping, 1h is incubated, the material in reaction vessel is cooled to 40-50 DEG C, then uses sodium hydroxide
The aqueous solution adjusts its pH, and pH is adjusted into 6-7, polycarboxylate water-reducer is made, labeled as MT-1.
Embodiment 2
By 380 parts of (referring to parts by weight, similarly hereinafter) allyl polyethenoxy ethers (relative molecular weight 2400) and 220 parts of deionized waters
It is put into reaction vessel, stirs and heat, the temperature of the material in reaction vessel is risen to 59-61 DEG C, in keeping temperature 59-61
At DEG C, stirring is completely dissolved added material.
The temperature of the material in reaction vessel is set to be maintained at 59-61 DEG C and continue stirring, and into reaction vessel once
Property 9 parts of concentration of input be 27% hydrogen peroxide；Stir after 10min, it is 75% that 60 parts of concentration are added dropwise simultaneously into reaction vessel
Acrylic acid aqueous solution and 80 parts of regulation-reduction mixed liquors (containing 0.6 part of vitamin C and 1.5 parts of mercaptopropionic acids), wherein, acrylic acid
The time for adding of the aqueous solution is 180min, and the time for adding of regulation-reduction mixed liquor is 210min.
After completion of dropping, 1h is incubated, the material in reaction vessel is cooled to 40-50 DEG C, then uses sodium hydroxide
The aqueous solution adjusts its pH, and pH is adjusted into 6-7, polycarboxylate water-reducer is made, labeled as MT-2.
Embodiment 3
By 400 parts of (referring to parts by weight, similarly hereinafter) allyl polyethenoxy ethers (relative molecular weight 2400) and 250 parts of deionized waters
It is put into reaction vessel, stirs and heat, the temperature of the material in reaction vessel is risen to 59-61 DEG C, in keeping temperature 59-61
At DEG C, stirring is completely dissolved added material.
The temperature of the material in reaction vessel is set to be maintained at 59-61 DEG C and continue stirring, and into reaction vessel once
Property 9 parts of concentration of input be 27% hydrogen peroxide；Stir after 10min, it is 85% that 60 parts of concentration are added dropwise simultaneously into reaction vessel
Acrylic acid aqueous solution and 80 parts of regulation-reduction mixed liquors (containing 0.6 part of vitamin C and 1.8 parts of mercaptopropionic acids), wherein, acrylic acid
The time for adding of the aqueous solution is 180min, and the time for adding of regulation-reduction mixed liquor is 210min.
After completion of dropping, 1h is incubated, the material in reaction vessel is cooled to 40-50 DEG C, then uses sodium hydroxide
The aqueous solution adjusts its pH, and pH is adjusted into 6-7, polycarboxylate water-reducer is made, labeled as MT-3.
Embodiment 4
By 380 parts of (referring to parts by weight, similarly hereinafter) allyl polyethenoxy ethers (relative molecular weight 2400) and 240 parts of deionized waters
It is put into reaction vessel, stirs and heat, the temperature of the material in reaction vessel is risen to 59-61 DEG C, in keeping temperature 59-61
At DEG C, stirring is completely dissolved added material.
The temperature of the material in reaction vessel is set to be maintained at 59-61 DEG C and continue stirring, and into reaction vessel once
Property 9 parts of concentration of input be 27% hydrogen peroxide；Stir after 10min, it is 80% that 80 parts of concentration are added dropwise simultaneously into reaction vessel
Acrylic acid aqueous solution and 100 parts of regulation-reduction mixed liquors (containing 0.6 part of vitamin C and 1.2 parts of mercaptopropionic acids), wherein, acrylic acid
The time for adding of the aqueous solution is 180min, and the time for adding of regulation-reduction mixed liquor is 210min.
After completion of dropping, 1h is incubated, the material in reaction vessel is cooled to 40-50 DEG C, then uses sodium hydroxide
The aqueous solution adjusts its pH, and pH is adjusted into 6-7, polycarboxylate water-reducer is made, labeled as MT-4.
Embodiment 5
By 380 parts of (referring to parts by weight, similarly hereinafter) allyl polyethenoxy ethers (relative molecular weight 2400) and 240 parts of deionized waters
It is put into reaction vessel, stirs and heat, the temperature of the material in reaction vessel is risen to 55-57 DEG C, in keeping temperature 55-57
At DEG C, stirring is completely dissolved added material.
The temperature of the material in reaction vessel is set to be maintained at 55-57 DEG C and continue stirring, and into reaction vessel once
Property 9 parts of concentration of input be 27% hydrogen peroxide；Stir after 10min, it is 80% that 60 parts of concentration are added dropwise simultaneously into reaction vessel
Acrylic acid aqueous solution and 80 parts of regulation-reduction mixed liquors (containing 0.6 part of vitamin C and 1.2 parts of mercaptopropionic acids), wherein, acrylic acid
The time for adding of the aqueous solution is 180min, and the time for adding of regulation-reduction mixed liquor is 210min.
After completion of dropping, 1h is incubated, the material in reaction vessel is cooled to 40-50 DEG C, then uses sodium hydroxide
The aqueous solution adjusts its pH, and pH is adjusted into 6-7, polycarboxylate water-reducer is made, labeled as MT-5.
Embodiment 6
By 380 parts of (referring to parts by weight, similarly hereinafter) allyl polyethenoxy ethers (relative molecular weight 2400) and 240 parts of deionized waters
It is put into reaction vessel, stirs and heat, the temperature of the material in reaction vessel is risen to 62-65 DEG C, in keeping temperature 62-65
At DEG C, stirring is completely dissolved added material.
The temperature of the material in reaction vessel is set to be maintained at 62-65 DEG C and continue stirring, and into reaction vessel once
Property 9 parts of concentration of input be 27% hydrogen peroxide；Stir after 10min, it is 80% that 60 parts of concentration are added dropwise simultaneously into reaction vessel
Acrylic acid aqueous solution and 80 parts of regulation-reduction mixed liquors (containing 0.6 part of vitamin C and 1.2 parts of mercaptopropionic acids), wherein, acrylic acid
The time for adding of the aqueous solution is 180min, and the time for adding of regulation-reduction mixed liquor is 210min.
After completion of dropping, 1h is incubated, the material in reaction vessel is cooled to 40-50 DEG C, then uses sodium hydroxide
The aqueous solution adjusts its pH, and pH is adjusted into 6-7, polycarboxylate water-reducer is made, labeled as MT-6.
Embodiment 7
By 380 parts of (referring to parts by weight, similarly hereinafter) allyl polyethenoxy ethers (relative molecular weight 2400) and 240 parts of deionized waters
It is put into reaction vessel, stirs and heat, the temperature of the material in reaction vessel is risen to 59-61 DEG C, in keeping temperature 59-61
At DEG C, stirring is completely dissolved added material.
The temperature of the material in reaction vessel is set to be maintained at 59-61 DEG C and continue stirring, and into reaction vessel once
Property 9 parts of concentration of input be 27% hydrogen peroxide；Stir after 10min, it is 80% that 60 parts of concentration are added dropwise simultaneously into reaction vessel
Acrylic acid aqueous solution and 80 parts of regulation-reduction mixed liquors (containing 0.6 part of vitamin C and 1.2 parts of mercaptopropionic acids), wherein, acrylic acid
The time for adding of the aqueous solution is 190min, and the time for adding of regulation-reduction mixed liquor is 220min.
After completion of dropping, 1h is incubated, the material in reaction vessel is cooled to 40-50 DEG C, then uses sodium hydroxide
The aqueous solution adjusts its pH, and pH is adjusted into 6-7, polycarboxylate water-reducer is made, labeled as MT-7.
Embodiment 8
By 380 parts of (referring to parts by weight, similarly hereinafter) allyl polyethenoxy ethers (relative molecular weight 2400) and 240 parts of deionized waters
It is put into reaction vessel, stirs and heat, the temperature of the material in reaction vessel is risen to 59-61 DEG C, in keeping temperature 59-61
At DEG C, stirring is completely dissolved added material.
The temperature of the material in reaction vessel is set to be maintained at 59-61 DEG C and continue stirring, and into reaction vessel once
Property 9 parts of concentration of input be 27% hydrogen peroxide；Stir after 10min, it is 80% that 60 parts of concentration are added dropwise simultaneously into reaction vessel
Acrylic acid aqueous solution and 80 parts of regulation-reduction mixed liquors (containing 0.6 part of vitamin C and 1.2 parts of mercaptopropionic acids), wherein, acrylic acid
The time for adding of the aqueous solution is 170min, and the time for adding of regulation-reduction mixed liquor is 200min.
After completion of dropping, 1h is incubated, the material in reaction vessel is cooled to 40-50 DEG C, then uses sodium hydroxide
The aqueous solution adjusts its pH, and pH is adjusted into 6-7, polycarboxylate water-reducer is made, labeled as MT-8.
Embodiment 9
By 380 parts of (referring to parts by weight, similarly hereinafter) allyl polyethenoxy ethers (relative molecular weight 2400) and 240 parts of deionized waters
It is put into reaction vessel, stirs and heat, the temperature of the material in reaction vessel is risen to 59-61 DEG C, in keeping temperature 59-61
At DEG C, stirring is completely dissolved added material.
The temperature of the material in reaction vessel is set to be maintained at 59-61 DEG C and continue stirring, and into reaction vessel once
Property 9 parts of concentration of input be 27% hydrogen peroxide；Stir after 10min, it is 80% that 60 parts of concentration are added dropwise simultaneously into reaction vessel
Acrylic acid aqueous solution and 80 parts of regulation-reduction mixed liquors (containing 0.6 part of vitamin C and 1.2 parts of mercaptopropionic acids), wherein, acrylic acid
The time for adding of the aqueous solution is 180min, and the time for adding of regulation-reduction mixed liquor is 210min.
After completion of dropping, 1.5h is incubated, the material in reaction vessel is cooled to 40-50 DEG C, then uses hydroxide
Sodium water solution adjusts its pH, and pH is adjusted into 6-7, polycarboxylate water-reducer is made, labeled as MT-9.
In other embodiments, the consumption of hydrogen peroxide (i.e. oxidant) can also be allyl polyethenoxy ether and propylene
The 0.01-3% of the quality sum of acid, and the concentration of hydrogen peroxide can also be 25-30%；The use of vitamin C (i.e. reducing agent)
Amount can also be the 0.003-0.5% of the quality sum of allyl polyethenoxy ether and acrylic acid；The consumption of chain tra nsfer conditioning agent
The 0.01-1% of the quality sum of allyl polyethenoxy ether and acrylic acid is can also be, and chain tra nsfer conditioning agent can also be
TGA；The mass percent sum of chain tra nsfer conditioning agent and reducing agent can also be 1.5- in regulation-reduction mixed liquor
3%.
Comparative example 1
By 380 parts of (referring to parts by weight, similarly hereinafter) allyl polyethenoxy ethers (relative molecular weight 2400) and 240 parts of deionized waters
It is put into reaction vessel, stirs and heat, the temperature of the material in reaction vessel is risen to 59-61 DEG C, in keeping temperature 59-61
At DEG C, stirring is completely dissolved added material.
The temperature of the material in reaction vessel is set to be maintained at 59-61 DEG C and continue stirring, and into reaction vessel once
Property 9 parts of concentration of input be 27% hydrogen peroxide；Stir after 10min, it is 80% that 60 parts of concentration are added dropwise simultaneously into reaction vessel
Acrylic acid aqueous solution and 80 parts of regulation-reduction mixed liquors (containing 0.6 part of vitamin C and 1.2 parts of mercaptopropionic acids), wherein, acrylic acid
The time for adding of the aqueous solution is 220min, and the time for adding of regulation-reduction mixed liquor is 250min.
After completion of dropping, 1h is incubated, the material in reaction vessel is cooled to 40-50 DEG C, then uses sodium hydroxide
The aqueous solution adjusts its pH, and pH is adjusted into 6-7, polycarboxylate water-reducer is made, labeled as MT-10.
Comparative example 2
By 380 parts of (referring to parts by weight, similarly hereinafter) allyl polyethenoxy ethers (relative molecular weight 2400) and 240 parts of deionized waters
It is put into reaction vessel, stirs and heat, the temperature of the material in reaction vessel is risen to 59-61 DEG C, in keeping temperature 59-61
At DEG C, stirring is completely dissolved added material.
The temperature of the material in reaction vessel is set to be maintained at 59-61 DEG C and continue stirring, and into reaction vessel once
Property 9 parts of concentration of input be 27% hydrogen peroxide；Stir after 10min, it is 80% that 60 parts of concentration are added dropwise simultaneously into reaction vessel
Acrylic acid aqueous solution and 80 parts of regulation-reduction mixed liquors (containing 0.6 part of vitamin C and 1.2 parts of mercaptopropionic acids), wherein, acrylic acid
The time for adding of the aqueous solution is 140min, and the time for adding of regulation-reduction mixed liquor is 170min.
After completion of dropping, 1h is incubated, the material in reaction vessel is cooled to 40-50 DEG C, then uses sodium hydroxide
The aqueous solution adjusts its pH, and pH is adjusted into 6-7, polycarboxylate water-reducer is made, labeled as MT-11.
Comparative example 3
By 380 parts of (referring to parts by weight, similarly hereinafter) allyl polyethenoxy ethers (relative molecular weight 2400) and 240 parts of deionized waters
It is put into reaction vessel, stirs and heat, the temperature of the material in reaction vessel is risen to 59-61 DEG C, in keeping temperature 59-61
At DEG C, stirring is completely dissolved added material.
The temperature of the material in reaction vessel is set to be maintained at 59-61 DEG C and continue stirring, and into reaction vessel once
Property 9 parts of concentration of input be 27% hydrogen peroxide；Stir after 10min, it is 90% that 53.5 parts of concentration are added dropwise simultaneously into reaction vessel
Acrylic acid aqueous solution and 80 portions of regulation-reduction mixed liquors (containing 0.6 part of vitamin C and 1.2 parts of mercaptopropionic acids), wherein, propylene
The time for adding of aqueous acid is 180min, and the time for adding of regulation-reduction mixed liquor is 210min.
After completion of dropping, 1h is incubated, the material in reaction vessel is cooled to 40-50 DEG C, then uses sodium hydroxide
The aqueous solution adjusts its pH, and pH is adjusted into 6-7, polycarboxylate water-reducer is made, labeled as MT-12.
Comparative example 4
By 380 parts of (referring to parts by weight, similarly hereinafter) allyl polyethenoxy ethers (relative molecular weight 2400) and 240 parts of deionized waters
It is put into reaction vessel, stirs and heat, the temperature of the material in reaction vessel is risen to 59-61 DEG C, in keeping temperature 59-61
At DEG C, stirring is completely dissolved added material.
The temperature of the material in reaction vessel is set to be maintained at 59-61 DEG C and continue stirring, and into reaction vessel once
Property 9 parts of concentration of input be 27% hydrogen peroxide；Stir after 10min, it is 70% that 68.5 parts of concentration are added dropwise simultaneously into reaction vessel
Acrylic acid aqueous solution and 80 portions of regulation-reduction mixed liquors (containing 0.6 part of vitamin C and 1.2 parts of mercaptopropionic acids), wherein, propylene
The time for adding of aqueous acid is 180min, and the time for adding of regulation-reduction mixed liquor is 210min.
After completion of dropping, 1h is incubated, the material in reaction vessel is cooled to 40-50 DEG C, then uses sodium hydroxide
The aqueous solution adjusts its pH, and pH is adjusted into 6-7, polycarboxylate water-reducer is made, labeled as MT-13.
According to concrete admixture homogeneity test method GB/T8077-2000 above-described embodiment 1-9 is determined respectively and right
Polycarboxylate water-reducer MT1-MT13 prepared by ratio 1-4 is to the paste flowing degree of cement, and according to normal concrete mix physical property
Energy test method standard GB/T50080-2002 determines slump-loss of the polycarboxylate water-reducer MT1-MT13 to concrete respectively.
Test result is as shown in table 1 below and table 2 below.
Measurement results of the polycarboxylate water-reducer MT1-MT13 of table 1 to flowing degree of net paste of cement
Measurement results of the polycarboxylate water-reducer MT1-MT13 of table 2 to concrete slump loss
The technology contents described above that the present invention is only further illustrated with embodiment, in order to which reader is easier to understand,
But embodiments of the present invention are not represented and are only limitted to this, and any technology done according to the present invention extends or recreated, and is sent out by this
Bright protection.
Claims (3)
1. a kind of preparation method of high-performance polycarboxylic acids water reducing agent, it is characterised in that comprise the following steps：
S1, allyl polyethenoxy ether and water be placed in reaction vessel, add the material in reaction vessel while stirring
Heat adds oxidant into reaction vessel to 55-65 DEG C, then and stirs 10min at 55-65 DEG C；The pi-allyl polyoxy second
The mass ratio of alkene ether and water is 38：22-24；
S2, the temperature of the material made in reaction vessel are maintained at 55-65 DEG C and continue stirring, and are dripped simultaneously into reaction vessel
Plus acrylic acid aqueous solution and regulation-reduction mixed liquor, the time for adding of regulation-reduction mixed liquor is 200-220min；Drip
1-1.5h is incubated after finishing；The regulation-reduction mixed liquor is the aqueous solution containing chain tra nsfer conditioning agent and reducing agent；The allyl
The mass ratio of base APEO and acrylic acid is 380：45-64；
S3, the material in reaction vessel is cooled to after 40-50 DEG C, pH to 6-7 is adjusted with alkaline solution；
The consumption of the oxidant is the 0.01-3% of the quality sum of allyl polyethenoxy ether and acrylic acid；
The consumption of the reducing agent is the 0.003-0.5% of the quality sum of allyl polyethenoxy ether and acrylic acid；
The consumption of the chain tra nsfer conditioning agent is the 0.01-1% of the quality sum of allyl polyethenoxy ether and acrylic acid;
The mass percent of acrylic acid is 75-85% in the acrylic acid aqueous solution;
The time for adding of the acrylic acid aqueous solution is 190min;
The mass percent sum of chain tra nsfer conditioning agent and reducing agent is 1.5-3% in the regulation-reduction mixed liquor;
The chain tra nsfer conditioning agent is mercaptopropionic acid.
2. a kind of preparation method of high-performance polycarboxylic acids water reducing agent according to claim 1, it is characterised in that the oxidant
For hydrogen peroxide, the concentration of the hydrogen peroxide is 25-30%.
3. according to a kind of any one of claim 1-2 preparation methods of high-performance polycarboxylic acids water reducing agent,
Characterized in that, the relative molecular weight of the allyl polyethenoxy ether is 2400.
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| CN101974135A (en) * | 2010-10-15 | 2011-02-16 | 北京工业大学 | Normal-temperature synthesis method for polycarboxylic acid water-reducing agent |
| CN102993384A (en) * | 2012-08-21 | 2013-03-27 | 江苏百瑞吉新材料有限公司 | Polycarboxylate high-performance water reducing agent |
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| CN101974135A (en) * | 2010-10-15 | 2011-02-16 | 北京工业大学 | Normal-temperature synthesis method for polycarboxylic acid water-reducing agent |
| CN102993384A (en) * | 2012-08-21 | 2013-03-27 | 江苏百瑞吉新材料有限公司 | Polycarboxylate high-performance water reducing agent |
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