CN106146750A - Collapse protective poly-carboxylic acid high-performance water reducing agent and preparation method thereof - Google Patents
Collapse protective poly-carboxylic acid high-performance water reducing agent and preparation method thereof Download PDFInfo
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- CN106146750A CN106146750A CN201610481517.6A CN201610481517A CN106146750A CN 106146750 A CN106146750 A CN 106146750A CN 201610481517 A CN201610481517 A CN 201610481517A CN 106146750 A CN106146750 A CN 106146750A
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- 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
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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
- C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
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- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
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- 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
- C08F8/00—Chemical modification by after-treatment
- C08F8/44—Preparation of metal salts or ammonium salts
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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 Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polymerization Catalysts (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses collapse protective poly-carboxylic acid high-performance water reducing agent and preparation method thereof, wherein collapse protective poly-carboxylic acid high-performance water reducing agent includes the raw material of following weight portion: polycarboxylic acids solution 1000 ~ 1500 parts, unitary unsaturated carboxylic acid and derivant 800 ~ 1300 parts thereof, 1000 ~ 1500 parts of calcium chloride, initiator 50 ~ 100 parts, molecular weight regulator 50 ~ 80 parts and 4000 ~ 5000 parts of water；Polycarboxylic acids solution is made up of the raw material of following weight portion: fatty alcohol-polyoxyethylene ether 1000 ~ 1400 parts, 300 ~ 450 parts of acrylic acid, hydrogen peroxide 25 ~ 30 parts, catalyst 50 ~ 65 parts and 500 ~ 1000 parts of water；Unitary unsaturated carboxylic acid and derivant thereof are made up of the raw material of following weight portion: 100 ~ 250 parts of acrylic acid, methacrylic acid 50 ~ 150 parts, 50 ~ 80 parts of sodium chloride, calcium chloride solution 50 ~ 80 parts and 100 ~ 150 parts of ammonium sulfate.
Description
Technical field
The present invention relates to a kind of cement additire, be specifically related to a kind of collapse protective poly-carboxylic acid high-performance water reducing agent and preparation thereof
Method.
Background technology
Polycarboxylate high performance water-reducing agent is the third generation high-performance water reducing agent that development in recent years is swift and violent.Superior due to him
Dispersive property and the controllability of use, receive manufacturing enterprise and the high praise of users.But current polycarboxylic acids
Producing and application is remaining in some problems, have impact on its development, if his primary raw material is from the downstream of petroleum refining
Product, supply is becoming tight day, and price has bigger fluctuation.In the concrete of high intensity uses, concrete can be produced again send out
Glue, take off the phenomenons such as the end.These problems cause users and the concern of Producer and attention, promote people to become reducing raw material
This, price stabilization and improve aspect of performance and further think and research and develop.
Summary of the invention
The purpose of the present invention is exactly to solve the problems referred to above that existing polycarboxylate high performance water-reducing agent exists, it is provided that Yi Zhongbao
The type that collapses high performance water reducing agent of polyocarboxy acid and preparation method thereof, it not only improves the performance of water reducer, also a saving cost.
In order to reach foregoing invention purpose, the technical solution used in the present invention is:
On the one hand, it is provided that a kind of collapse protective poly-carboxylic acid high-performance water reducing agent, it includes the raw material of following weight portion:
Polycarboxylic acids solution 1000 ~ 1500 parts, unitary unsaturated carboxylic acid and derivant 800 ~ 1300 parts thereof, calcium chloride 1000 ~
1500 parts, initiator 50 ~ 100 parts, molecular weight regulator 50 ~ 80 parts and 4000 ~ 5000 parts of water；
Described polycarboxylic acids solution is made up of the raw material of following weight portion: fatty alcohol-polyoxyethylene ether 1000 ~ 1400 parts, acrylic acid
300 ~ 450 parts, hydrogen peroxide 25 ~ 30 parts, catalyst 50 ~ 65 parts and 500 ~ 1000 parts of water；
Described unitary unsaturated carboxylic acid and derivant thereof are made up of the raw material of following weight portion: 100 ~ 250 parts of acrylic acid, methyl
50 ~ 150 parts of acrylic acid, 50 ~ 80 parts of sodium chloride, calcium chloride solution 50 ~ 80 parts and 100 ~ 150 parts of ammonium sulfate.
On the other hand, it is provided that the preparation method of a kind of collapse protective poly-carboxylic acid high-performance water reducing agent, it comprises the following steps:
A, the preparation of polycarboxylic acids solution
By fatty alcohol-polyoxyethylene ether 1000 ~ 1400 parts, 300 ~ 450 parts of acrylic acid, hydrogen peroxide 25 ~ 30 parts, catalyst 50 ~
65 parts, with in 500 ~ 1000 parts of addition reactors of water, under the catalytic action of catalyst, are reacted 0.8 ~ 1.3h, molten with calcium hydroxide
Liquid is neutralized to pH=6 ~ 8 and prepares polycarboxylic acids solution；
B, polycarboxylic acids solution 1000 ~ 1500 parts and unitary unsaturated carboxylic acid and derivant 800 ~ 1300 parts thereof are joined retort
In, it is warming up to 50-70 DEG C；
C, successively 1000 ~ 1500 parts of calcium chloride of addition, initiator 50 ~ 100 parts and molecular weight regulator 50 ~ 80 in retort
Part, the interval time adding calcium chloride, initiator and molecular weight regulator is 0.5h, and adds calcium chloride up to adding molecular weight
The mixing speed of 500 ~ 1000r/min is used to be stirred between regulator later stage half an hour；
D, afterwards 4000 ~ 5000 parts of water of addition stir 10min with the mixing speed of 500 ~ 800r/min, are continuously heating to 75-95
Carry out polyreaction at DEG C, react 3h ~ 5h, after the aqueous solution regulation reactant pH value of sodium hydroxide to 6.0 ~ 7.5, cold
But water reducer finished product is i.e. obtained to 25-40 DEG C.
The invention have the benefit that water reducer prepared by formula using this programme and preparation method thereof, its slump retaining
Can be excellent, it is suitable for the applied at elevated temperature in summer, meanwhile, there is adaptability widely, to various portland cements, normal silicate water
The cement type adaptability of mud, portland slag cement and various admixture and different process is extensive, is respectively provided with and well divides
Dissipate property and protect plasticity.Substantially improve polycarboxylate water-reducer to cement is sensitive inapplicable problem.
The introducing of the cation such as calcium ion and sodium ion in this programme, adds cement after the water reducer of this programme in cement
In granule, the mixing water of parcel is reduced to less than 10% from 30%, and water-reducing rate when making cement use reaches more than 30%；Introduce calcium from
After son and sodium ion, in the case of volume is less, there is viscosity reducing effect.
The water reducer of the formula additionally using this programme offer and preparation method thereof preparation has good dispersibility, at height
There is the highest mobility in the application of strength grade concrete, the intensity of formation of concrete is had raising by a relatively large margin, gassiness
Measuring moderate, freeze-thaw resistance significantly improves, easily cast and closely knit, is greatly improved concrete service life.
Detailed description of the invention
Below the detailed description of the invention of the present invention is described, in order to those skilled in the art understand this
Bright, it should be apparent that the invention is not restricted to the scope of detailed description of the invention, from the point of view of those skilled in the art,
As long as various changes limit and in the spirit and scope of the present invention that determine, these changes are aobvious and easy in appended claim
Seeing, all utilize the innovation and creation of present inventive concept all at the row of protection.
Embodiment 1
The collapse protective poly-carboxylic acid high-performance water reducing agent of the present embodiment includes the raw material of following weight portion:
Polycarboxylic acids solution 1000 parts, unitary unsaturated carboxylic acid and derivant 1300 parts thereof, 1000 parts of calcium chloride, initiator 60
Part, molecular weight regulator 70 parts and 4000 parts of water；Polycarboxylic acids solution is made up of the raw material of following weight portion: fatty alcohol polyoxy second
1100 parts of alkene ether, 300 parts of acrylic acid, hydrogen peroxide 25 parts, catalyst 52 parts and 550 parts of water；Unitary unsaturated carboxylic acid and spreading out
Biology is made up of the raw material of following weight portion: 150 parts of acrylic acid, methacrylic acid 150 parts, 50 parts of sodium chloride, calcium chloride solution
60 parts and 150 parts of ammonium sulfate.
Molecular weight regulator is methylpropene sodium sulfonate, sodium allylsulfonate, TGA, mercaptopropionic acid or n-dodecane
One or more in base mercaptan are mixed to get mixture in any proportion；Initiator is organic oxygen compound initiator, and it was
Double 14 esters of oxidation dibenzoyl, di-cyclohexylperoxy di-carbonate and peroxy dicarbonate are mixed in the ratio of 1:2:1.5
The mixture arrived；Catalyst is the mixture that vitamin C, Ge(SO) and glycine propyl ester are obtained by 1:1.5:2.
The preparation method of the collapse protective poly-carboxylic acid high-performance water reducing agent of the present embodiment comprises the following steps:
A, the preparation of polycarboxylic acids solution
By fatty alcohol-polyoxyethylene ether 1100 parts, 300 parts of acrylic acid, hydrogen peroxide 25 parts, catalyst 52 parts and the addition of 550 parts of water
In reactor, under the catalytic action of catalyst, reacting 0.9h, being neutralized to pH=6.5 with aqua calcis, to prepare polycarboxylic acids molten
Liquid；
B, polycarboxylic acids solution 1000 parts and unitary unsaturated carboxylic acid and derivant 1300 parts thereof are joined in retort, be warming up to
50-70℃；
C, successively 1000 parts of calcium chloride of addition in retort, initiator 60 parts, molecular weight regulator 70 parts, add chlorination
The interval time of calcium, initiator and molecular weight regulator is 0.5h, and it is little up to adding molecular weight regulator half to add calcium chloride
Time the later stage between use the mixing speed of 800r/min to be stirred；
D, afterwards 4000 parts of water of addition stir 10min with the mixing speed of 500r/min, are continuously heating at 75 DEG C be polymerized
Reaction, reacts 3h, after the aqueous solution regulation reactant pH value of sodium hydroxide to 6. 5, is cooled to 25 DEG C and i.e. obtains diminishing
Agent finished product.
Add the water reducer of the present embodiment when cement uses after, in cement granules, the mixing water of parcel is reduced to from 30%
5%, water-reducing rate when making cement use reaches 40%.
Embodiment 2
The collapse protective poly-carboxylic acid high-performance water reducing agent of the present embodiment includes the raw material of following weight portion:
Polycarboxylic acids solution 1200 parts, unitary unsaturated carboxylic acid and derivant 800 parts thereof, 1200 parts of calcium chloride, initiator 100
Part, molecular weight regulator 50 parts and 4300 parts of water；Polycarboxylic acids solution is made up of the raw material of following weight portion: fatty alcohol polyoxy second
1400 parts of alkene ether, 450 parts of acrylic acid, hydrogen peroxide 28 parts, catalyst 60 parts and 1000 parts of water；Unitary unsaturated carboxylic acid and spreading out
Biology is made up of the raw material of following weight portion: 100 parts of acrylic acid, methacrylic acid 50 parts, 60 parts of sodium chloride, calcium chloride solution
70 parts and 100 parts of ammonium sulfate.
Molecular weight regulator is methylpropene sodium sulfonate, sodium allylsulfonate, TGA, mercaptopropionic acid or n-dodecane
One or more in base mercaptan are mixed to get mixture in any proportion；Initiator is inorganic oxide initiator, and it is sulfur
The mixture that acid potassium, sodium peroxydisulfate, Ammonium persulfate. and azo-bis-isobutyl cyanide are mixed to get in the ratio of 1:4:2.5:1；Catalyst
The mixture obtained by 1:1.5:2 for vitamin C, Ge(SO) and glycine propyl ester.
The preparation method of the collapse protective poly-carboxylic acid high-performance water reducing agent of the present embodiment comprises the following steps:
A, the preparation of polycarboxylic acids solution
By fatty alcohol-polyoxyethylene ether 1400 parts, 450 parts of acrylic acid, hydrogen peroxide 28 parts, catalyst 60 parts and 1000 parts of water add
Entering in reactor, under the catalytic action of catalyst, react 1h, being neutralized to pH=7 with aqua calcis, to prepare polycarboxylic acids molten
Liquid；
B, polycarboxylic acids solution 1200 parts and unitary unsaturated carboxylic acid and derivant 800 parts thereof are joined in retort, be warming up to
50-70℃；
C, successively 1200 parts of calcium chloride of addition, initiator 100 parts and molecular weight regulator 50 parts in retort, add chlorination
The interval time of calcium, initiator and molecular weight regulator is 0.5h, and it is little up to adding molecular weight regulator half to add calcium chloride
Time the later stage between use the mixing speed of 500r/min to be stirred；
D, afterwards 4300 parts of water of addition stir 10min with the mixing speed of 500r/min, are continuously heating at 80 DEG C be polymerized
Reaction, reacts 3.5h, after the aqueous solution regulation reactant pH value of sodium hydroxide to 6.0, is cooled to 30 DEG C and i.e. obtains diminishing
Agent finished product.
Add the water reducer of the present embodiment when cement uses after, in cement granules, the mixing water of parcel is reduced to from 30%
8%, water-reducing rate when making cement use reaches 34%.
Embodiment 3
The collapse protective poly-carboxylic acid high-performance water reducing agent of the present embodiment includes the raw material of following weight portion:
Polycarboxylic acids solution 1400 parts, unitary unsaturated carboxylic acid and derivant 1000 parts thereof, 1500 parts of calcium chloride, initiator 70
Part, molecular weight regulator 80 parts and 4800 parts of water；Polycarboxylic acids solution is made up of the raw material of following weight portion: aliphatic alcohol polyethenoxy
1300 parts of ether, 350 parts of acrylic acid, hydrogen peroxide 30 parts, catalyst 65 parts and 700 parts of water；Unitary unsaturated carboxylic acid and derivative
Thing is made up of the raw material of following weight portion: 200 parts of acrylic acid, methacrylic acid 80 parts, 70 parts of sodium chloride, calcium chloride solution 80
Part and 120 parts of ammonium sulfate.
Molecular weight regulator is methylpropene sodium sulfonate, sodium allylsulfonate, TGA, mercaptopropionic acid or n-dodecane
One or more in base mercaptan are mixed to get mixture in any proportion；Initiator is organic oxygen compound initiator, and it was
Oxidation dibenzoyl, di-cyclohexylperoxy di-carbonate, peroxy dicarbonate two hexadecyl ester, double 14 esters of peroxy dicarbonate and
The mixture that peroxy dicarbonate dihexyl is mixed to get by 1:2:1.5:1.3:1；Catalyst is vitamin C, Ge(SO) and ammonia
The mixture that guanidine-acetic acid propyl ester is obtained by 1:1.5:2.
The preparation method of the collapse protective poly-carboxylic acid high-performance water reducing agent of the present embodiment comprises the following steps:
A, the preparation of polycarboxylic acids solution
By fatty alcohol-polyoxyethylene ether 1300 parts, 350 parts of acrylic acid, hydrogen peroxide 30 parts, catalyst 65 parts and the addition of 700 parts of water
In reactor, under the catalytic action of catalyst, reacting 1.1h, being neutralized to pH=7.5 with aqua calcis, to prepare polycarboxylic acids molten
Liquid；
B, polycarboxylic acids solution 1400 parts, unitary unsaturated carboxylic acid and derivant 1000 parts thereof are joined in retort, be warming up to
70℃；
C, successively 1500 parts of calcium chloride of addition in retort, initiator 70 parts, molecular weight regulator 80 parts, add chlorination
The interval time of calcium, initiator and molecular weight regulator is 0.5h, and it is little up to adding molecular weight regulator half to add calcium chloride
Time the later stage between use the mixing speed of 1000r/min to be stirred；
D, afterwards 4800 parts of water of addition stir 10min with the mixing speed of 700r/min, are continuously heating at 90 DEG C be polymerized
Reaction, reacts 4h, after the aqueous solution regulation reactant pH value of sodium hydroxide to 7.5, is cooled to 35 DEG C and i.e. obtains water reducer
Finished product.
Add the water reducer of the present embodiment when cement uses after, in cement granules, the mixing water of parcel is reduced to from 30%
7%, water-reducing rate when making cement use reaches 37%.
Embodiment 4
The collapse protective poly-carboxylic acid high-performance water reducing agent of the present embodiment includes the raw material of following weight portion:
Polycarboxylic acids solution 1500 parts, unitary unsaturated carboxylic acid and derivant 1200 parts thereof, 1350 parts of calcium chloride, initiator 85 parts,
Molecular weight regulator 60 parts and 5000 parts of water；Polycarboxylic acids solution is made up of the raw material of following weight portion: fatty alcohol-polyoxyethylene ether
1200 parts, 400 parts of acrylic acid, hydrogen peroxide 30 parts, catalyst 65 parts and 850 parts of water；Unitary unsaturated carboxylic acid and derivant thereof by
Following weight portion raw material composition: 250 parts of acrylic acid, methacrylic acid 120 parts, 80 parts of sodium chloride, calcium chloride solution 50 parts and
135 parts of ammonium sulfate.
Molecular weight regulator is methylpropene sodium sulfonate, sodium allylsulfonate, TGA, mercaptopropionic acid or n-dodecane
One or more in base mercaptan are mixed to get mixture in any proportion；Initiator is inorganic oxide initiator, and it is sulfur
Acid potassium, sodium peroxydisulfate and Ammonium persulfate.: the mixture that 1:3:1.3 ratio is mixed to get；Catalyst be vitamin C, Ge(SO) and
The mixture that glycine propyl ester is obtained by 1:1.5:2.
The preparation method of the collapse protective poly-carboxylic acid high-performance water reducing agent of the present embodiment comprises the following steps:
A, the preparation of polycarboxylic acids solution
By fatty alcohol-polyoxyethylene ether 1200 parts, 400 parts of acrylic acid, hydrogen peroxide 30 parts, catalyst 65 parts and the addition of 850 parts of water
In reactor, under the catalytic action of catalyst, reacting 1.3h, being neutralized to pH=8 with aqua calcis, to prepare polycarboxylic acids molten
Liquid；
B, polycarboxylic acids solution 1500 parts and unitary unsaturated carboxylic acid and derivant 1200 parts thereof are joined in retort, be warming up to
65℃；
C, successively 1350 parts of calcium chloride of addition, initiator 85 parts and molecular weight regulator 60 parts in retort, add chlorination
The interval time of calcium, initiator and molecular weight regulator is 0.5h, and it is little up to adding molecular weight regulator half to add calcium chloride
Time the later stage between use the mixing speed of 1000r/min to be stirred；
D, afterwards 5000 parts of water of addition stir 10min with the mixing speed of 750r/min, are continuously heating at 95 DEG C be polymerized
Reaction, reacts 5h, after the aqueous solution regulation reactant pH value of sodium hydroxide to 7.5, is cooled to 40 DEG C and i.e. obtains water reducer
Finished product.
Add the water reducer of the present embodiment when cement uses after, in cement granules, the mixing water of parcel is reduced to from 30%
7.3%, water-reducing rate when making cement use reaches 36%.
Claims (6)
1. collapse protective poly-carboxylic acid high-performance water reducing agent, it is characterised in that include the raw material of following weight portion:
Polycarboxylic acids solution 1000 ~ 1500 parts, unitary unsaturated carboxylic acid and derivant 800 ~ 1300 parts thereof, calcium chloride 1000 ~
1500 parts, initiator 50 ~ 100 parts, molecular weight regulator 50 ~ 80 parts and 4000 ~ 5000 parts of water；
Described polycarboxylic acids solution is made up of the raw material of following weight portion: fatty alcohol-polyoxyethylene ether 1000 ~ 1400 parts, acrylic acid
300 ~ 450 parts, hydrogen peroxide 25 ~ 30 parts, catalyst 50 ~ 65 parts and 500 ~ 1000 parts of water；
Described unitary unsaturated carboxylic acid and derivant thereof are made up of the raw material of following weight portion: 100 ~ 250 parts of acrylic acid, methyl
50 ~ 150 parts of acrylic acid, 50 ~ 80 parts of sodium chloride, calcium chloride solution 50 ~ 80 parts and 100 ~ 150 parts of ammonium sulfate.
Collapse protective poly-carboxylic acid high-performance water reducing agent the most according to claim 1, it is characterised in that described molecular weight regulator
For one or more in methylpropene sodium sulfonate, sodium allylsulfonate, TGA, mercaptopropionic acid or n-dodecyl mercaptan
It is mixed to get mixture in any proportion；Described initiator is organic oxygen compound initiator or inorganic oxide initiator.
Collapse protective poly-carboxylic acid high-performance water reducing agent the most according to claim 2, it is characterised in that when described initiator is for having
During machine peroxide initiator, it is dibenzoyl peroxide, di-cyclohexylperoxy di-carbonate, peroxy dicarbonate 26
What in double 14 esters of ester, peroxy dicarbonate or peroxy dicarbonate dihexyl, one or more were mixed to get in any proportion is mixed
Compound；
When described initiator is inorganic oxide initiator, it is potassium sulfate, sodium peroxydisulfate, Ammonium persulfate. or azo two isobutyl
The mixture that one or more in cyanogen are mixed to get in any proportion.
Collapse protective poly-carboxylic acid high-performance water reducing agent the most according to claim 1 and 2, it is characterised in that described catalyst is
The mixture that vitamin C, Ge(SO) and glycine propyl ester are obtained by 1:1.5:2.
5. the preparation method of the arbitrary described collapse protective poly-carboxylic acid high-performance water reducing agent of claim 1-4, it is characterised in that
Comprise the following steps:
A, the preparation of polycarboxylic acids solution
By fatty alcohol-polyoxyethylene ether 1000 ~ 1400 parts, 300 ~ 450 parts of acrylic acid, hydrogen peroxide 25 ~ 30 parts, catalyst 50 ~
65 parts, with in 500 ~ 1000 parts of addition reactors of water, under the catalytic action of catalyst, are reacted 0.8 ~ 1.3h, molten with calcium hydroxide
Liquid is neutralized to pH=6 ~ 8 and prepares polycarboxylic acids solution；
B, polycarboxylic acids solution 1000 ~ 1500 parts and unitary unsaturated carboxylic acid and derivant 800 ~ 1300 parts thereof are joined retort
In, it is warming up to 50-70 DEG C；
C, successively 1000 ~ 1500 parts of calcium chloride of addition, initiator 50 ~ 100 parts and molecular weight regulator 50 ~ 80 in retort
Part, the interval time adding calcium chloride, initiator and molecular weight regulator is 0.5h, and adds calcium chloride up to adding molecular weight
The mixing speed of 500 ~ 1000r/min is used to be stirred between regulator later stage half an hour；
D, afterwards 4000 ~ 5000 parts of water of addition stir 10min with the mixing speed of 500 ~ 800r/min, are continuously heating to 75-95
Carry out polyreaction at DEG C, react 3h ~ 5h, after the aqueous solution regulation reactant pH value of sodium hydroxide to 6.0 ~ 7.5, cold
But water reducer finished product is i.e. obtained to 25-40 DEG C.
The preparation method of collapse protective poly-carboxylic acid high-performance water reducing agent the most according to claim 5, it is characterised in that described in draw
Sending out agent is organic oxygen compound initiator, and it is dibenzoyl peroxide, di-cyclohexylperoxy di-carbonate, peroxy dicarbonate two
The mixing that double 14 esters of hexadecyl ester, peroxy dicarbonate and peroxy dicarbonate dihexyl are mixed to get by 1:2:1.5:1.3:1
Thing.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106914970A (en) * | 2017-03-06 | 2017-07-04 | 成都银线电杆有限公司 | One kind improves concurrent early strength and exempts from steam protecting method |
| CN107902939A (en) * | 2017-11-25 | 2018-04-13 | 长沙加美乐素化工有限公司 | A kind of anti-freezing type polycarboxylate water-reducer and its synthesis technique |
| CN108083726A (en) * | 2017-12-18 | 2018-05-29 | 中国葛洲坝集团第五工程有限公司 | A kind of concrete for being suitable for tropical desert megathermal climate condition |
| CN108219045A (en) * | 2016-12-21 | 2018-06-29 | 宜宾市杰特曼建材有限公司 | A kind of collapse protection type high efficiency water reducing agent and its production technology |
| CN109748529A (en) * | 2019-03-25 | 2019-05-14 | 四川宇砼建材有限公司 | A kind of polycarboxylate water-reducer and preparation method thereof |
| CN112897923A (en) * | 2021-01-28 | 2021-06-04 | 安徽列首新材料科技有限公司 | Polycarboxylate superplasticizer and concrete prepared from same |
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