CN108659174A - A kind of method preparing polycarboxylate water-reducer and a kind of retarder and preparation method thereof - Google Patents
A kind of method preparing polycarboxylate water-reducer and a kind of retarder and preparation method thereof Download PDFInfo
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- CN108659174A CN108659174A CN201710192054.6A CN201710192054A CN108659174A CN 108659174 A CN108659174 A CN 108659174A CN 201710192054 A CN201710192054 A CN 201710192054A CN 108659174 A CN108659174 A CN 108659174A
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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
- 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
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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
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2605—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing polyether side chains
-
- 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
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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
- C04B2103/20—Retarders
- C04B2103/22—Set retarders
-
- 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)
- 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
This application discloses a kind of method preparing polycarboxylate water-reducer and a kind of retarder using prepared polycarboxylic acids water reducing agent compositional.Wherein, the method includes using unsaturated acids such as acrylic acid as minor comonomer, isobutene alcohol polyoxyethylene ether is polymeric monomer, and hydrogen peroxide and L ascorbic acid are initiation system, thioacetic acid and/or mercaptopropionic acid are chain-transferring agent, and progress water phase is free-radical polymerized in water and reacts.The retarder includes the above-mentioned polycarboxylate water-reducer of 75 90 parts by weight, 1 10 parts by weight sodium tripolyphosphates, 10 25 parts by weight of lemon acid and 1 10 parts by weight calcium increasing agents.The drawbacks of retarding effect of the retarder of the application is good, can significantly extend the Slow setting time of desulphurization building gypsum, and construction requirement cannot be met because quickly solidifying originally by enabling desulfurated plaster to overcome.Meanwhile the desulfurated plaster loss of strength very little after solidification.
Description
Technical field
This application involves but be not limited to building material field, be more particularly without limitation, to a kind of polycarboxylate water-reducer for preparing
Method and a kind of retarder and preparation method thereof.
Background technology
Desulfurated plaster is the industrial residue generated after means of flue gas desulfurization of power plant.The desulfurated plaster annual emissions in China are 50,000,000
Ton or more, wherein about 40% is largely stacked in a manner of waste, take up a large area, be seriously polluted, to weather, soil, plant and
Human health causes very big harm, is utilized to it extremely urgent.
It in building material industry, needs to consume a large amount of gypsum, replaces the natural gypsum to be used as gypsum building material with desulfurated plaster
Material can both make full use of desulfurated plaster, solve solid waste storage problem, and can effectively reduce production cost, effective to resource
Using and environmental protection be all of great importance.Building gypsum is made through dehydration calcining in desulfurated plaster, and all technical can reach
It, can be as the raw material of a variety of plasterings to the requirement of national standard.
But the early strength development of gypsum material is fast, and condensation firm time is short, only a few minutes to more than ten minutes, water is added to stir
It will soon lose flowability after mixing, lead to that construction related request cannot be met.In order to solve this problem, generally all can
Retarder is added in building materials of gypsum production, to meet production needs and construction process requirement.
Retarder common at present mainly has the types such as alkaline phosphate, organic acid and its soluble salt.Organic acid and its salt
Volume is small, retarding effect is good, but plastering intensity can be caused acutely to decline；There is also losss of strength for phosphoric acid salt retarder
Serious problem.The selection of retarder limits the popularization and application of building materials of gypsum to a certain extent.Although having at present
About reduction retarder to the dysgenic research of gypsum intensity, but do not tackle the problem at its root.
Invention content
It is the general introduction of the theme to being described in detail herein below.This general introduction is not to limit the protection model of claim
It encloses.
This application provides a kind of method preparing polycarboxylate water-reducer and a kind of utilizing prepared polycarboxylate water-reducer
Retarder of compounding and preparation method thereof can significantly be extended the Slow setting time of desulphurization building gypsum using the retarder, be made
Desulfurated plaster can overcome the drawbacks of cannot meeting construction requirement because quickly solidifying originally, and the loss of strength of desulfurated plaster
Very little.
Specifically, this application provides a kind of method preparing polycarboxylate water-reducer, the method includes：To be selected from propylene
One or more of unsaturated acids in acid, methacrylic acid, fumaric acid or itaconic acid are minor comonomer, isobutene alcohol polyoxy second
Alkene ether is polymeric monomer, and hydrogen peroxide and L-AA are initiation system, and thioacetic acid and/or mercaptopropionic acid are chain-transferring agent, will
Above-mentioned raw materials are added to the water, stirring, and progress water phase is free-radical polymerized at 40~60 DEG C and reacts；Stop stirring after 2.5~5.5h
It mixes, keeps the temperature 1h, it is cooling, wait for that the temperature of solution is less than 30 DEG C, it is 7 to be neutralized to pH with lye；
Wherein, the minor comonomer：Isobutene alcohol polyoxyethylene ether：Hydrogen peroxide as active ingredients：L-AA：Chain
The molar ratio of transfer agent is 3~6:1:0.15~0.5:0.01~0.5:0.01~0.5, the additive amount of water is by it is expected acquisition
The solid content (i.e. the content of active ingredient) of polycarboxylate water-reducer determines, and the moisture in hydrogen peroxide is as entire reaction system
A part for total water.
In the specific implementation mode of the application, the minor comonomer：Isobutene alcohol polyoxyethylene ether：As active ingredients
Hydrogen peroxide：L-AA：The molar ratio of chain-transferring agent can be 4~5:1:0.2~0.4:0.02~0.4:0.02~0.4.
In the specific implementation mode of the application, the molecular weight of the isobutene alcohol polyoxyethylene ether can 1500~
In 3000 ranges.
In the specific implementation mode of the application, the chain-transferring agent can be mercaptopropionic acid.
In the specific implementation mode of the application, the lye can be selected from NaOH, KOH, Ba (OH)2、Ca(OH)2In
One or more of alkali aqueous solution.
Optionally, the lye is the NaOH aqueous solutions that mass fraction is 30%.
In the specific implementation mode of the application, the free-radical polymerized reaction temperature with reaction of the water phase is 45~55
DEG C, the time of the stirring is 4h.
Present invention also provides a kind of retarder, the retarder includes the polycarboxylic acids diminishing prepared according to the above method
Agent, sodium tripolyphosphate, citric acid and calcium increasing agent, wherein the polycarboxylate water-reducer is calculated as 75-90 weights with the weight of active ingredient
Part is measured, sodium tripolyphosphate is 1-10 parts by weight, and citric acid is 10-25 parts by weight, and calcium increasing agent is 1-10 parts by weight.
In the specific implementation mode of the application, the solid content (i.e. the content of active ingredient) of the polycarboxylate water-reducer can
Think 40wt%.
In the specific implementation mode of the application, the polycarboxylate water-reducer can be with for 80- in terms of the weight of active ingredient
90 parts by weight, sodium tripolyphosphate can be 2-8 parts by weight, and citric acid can be 10-15 parts by weight, and calcium increasing agent can be 3-8 weights
Measure part.
In the specific implementation mode of the application, the calcium increasing agent may include calcium hydroxide, calcium oxide and calcium carbonate, and
And the weight ratio of the calcium hydroxide, calcium oxide and calcium carbonate can be 20~50：30~50：10~60.
In the specific implementation mode of the application, the fineness of the calcium increasing agent can be 325 mesh.
In the specific implementation mode of the application, the whiteness of the calcium increasing agent can be 95%.
In the specific implementation mode of the application, the additive amount of the retarder when in use can be gypsum quality
0.25~1%.
Optionally, the additive amount of the retarder when in use is the 0.3~0.8% of gypsum quality.
The application provides a kind of method preparing above-mentioned retarder again, the method includes：By the poly- of the parts by weight
Carboxylic acid water reducer, sodium tripolyphosphate, citric acid and calcium increasing agent mixing stand 10 minutes, i.e., without granular material in stirring to slurry
It can.
The retarder of minimal amount of the application is applied in desulphurization building gypsum, you can good retarding effect is obtained,
The Slow setting time of desulphurization building gypsum can significantly be extended, so that desulfurated plaster is overcome cannot meet because quickly solidifying originally
The drawbacks of construction requirement.Meanwhile the desulfurated plaster loss of strength very little after solidification.
The application successfully provides a kind of retarder of function admirable for solid waste-desulfurated plaster of power plant, makes to take off
Sulphur gypsum can be more widely used in building materials field, and desulfurated plaster solid waste is made to realize scale utilization.
Other features and advantage will illustrate in the following description, also, partly become from specification
It obtains it is clear that being understood by implementing the application.The purpose of the application and other advantages can by specification and
Specifically noted structure is realized and is obtained in claims.
Specific implementation mode
It, hereinafter will be to embodiments herein to make the purpose, technical scheme and advantage of the application be more clearly understood
It is described in detail.It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can
With mutually arbitrary combination.
From Dongguan City Qiao Ke Chemical Co., Ltd.s, analysis is pure for sodium tripolyphosphate purchase used in following embodiment；Lemon
From Xilong Chemical Co., Ltd, analysis is pure for lemon acid, calcium hydroxide, calcium oxide and calcium carbonate purchase；Other raw materials and reagents
For arbitrary commercial product.
Embodiment 1
The preparation of polycarboxylate water-reducer：410g water, 30g acrylic acid, 240g molecules are added into 1000 milliliters of four-hole boiling flasks
Amount for 2400 isobutene alcohol polyoxyethylene ether, 4.5g mass fractions be 27.5% hydrogen peroxide, 0.75g L-AAs and
2.5g mercaptopropionic acids are warming up to 50 DEG C, are stirred to react 4h, stop stirring, keep the temperature 1h, cooling.It is low to wait for that reaction solution is cooled to temperature
In 30 DEG C, it is 7 to be neutralized to pH with the NaOH of mass fraction 30%.The solid content of prepared polycarboxylate water-reducer is 40% left
It is right.
The preparation of retarder：Weigh 5g sodium tripolyphosphates, 10g citric acids and 4g calcium increasing agents (calcium hydroxide, calcium oxide, carbon
The weight ratio of sour calcium is 35:45:10) it is put into mixing machine, is adequately mixed uniformly, pours out.Above-mentioned mixture is slowly added to
It in the polycarboxylate water-reducer that solid content prepared by 202g is 40wt%, stirs evenly, until standing 10 without granular material in slurry
Minute.
Embodiment 2
Weigh 5g sodium tripolyphosphates, 10g citric acids and 7g calcium increasing agents (calcium hydroxide, calcium oxide, calcium carbonate weight ratio be
35:45:10) it is put into mixing machine, is adequately mixed uniformly, pours out.Above-mentioned mixture is slowly added to 195g embodiments 1 to prepare
Solid content be 40wt% polycarboxylate water-reducer in, stir evenly, until without granular material in slurry, stand 10 minutes.
Embodiment 3
Weigh 5g sodium tripolyphosphates, 10g citric acids and 5g calcium increasing agents (calcium hydroxide, calcium oxide, calcium carbonate weight ratio be
35:45:10) it is put into mixing machine, is adequately mixed uniformly, pours out.Above-mentioned mixture is slowly added to 200g embodiments 1 to prepare
Solid content be 40wt% polycarboxylate water-reducer in, stir evenly, until without granular material in slurry, stand 10 minutes.
Embodiment 4
The preparation of polycarboxylate water-reducer：The addition 514g water into 1000 milliliters of four-hole boiling flasks, 38.7g methacrylic acids,
The hydrogen peroxide that isobutene alcohol polyoxyethylene ether that 300g molecular weight is 3000,3.7g mass fractions are 27.5%, 1.76gL- are anti-bad
Hematic acid and 3.18g mercaptopropionic acids, are warming up to 52 DEG C, are stirred to react 3h, stop stirring, keep the temperature 1h, cooling.Wait for that reaction solution is cooled to
Temperature is less than 30 DEG C, and it is 7 to be neutralized to pH with the NaOH of mass fraction 30%.The solid content of prepared polycarboxylate water-reducer is
40% or so.
The preparation of retarder：Weigh 5g sodium tripolyphosphates, 10g citric acids and 4g calcium increasing agents (calcium hydroxide, calcium oxide, carbon
The weight ratio of sour calcium is 35:45:10) it is put into mixing machine, is adequately mixed uniformly, pours out.Above-mentioned mixture is slowly added to
It in the polycarboxylate water-reducer that solid content prepared by 202g is 40wt%, stirs evenly, until standing 10 without granular material in slurry
Minute.
Embodiment 5
The preparation of polycarboxylate water-reducer：441g water, 48.7g fumaric acid, 240g point are added into 1000 milliliters of four-hole boiling flasks
Son amount for 2400 isobutene alcohol polyoxyethylene ether, 4.3g mass fractions be 27.5% hydrogen peroxide, 3.5g L-AAs and
2.65g mercaptopropionic acids are warming up to 50 DEG C, are stirred to react 3.5h, stop stirring, keep the temperature 1h, cooling.Wait for that reaction solution is cooled to temperature
Less than 30 DEG C, it is 7 to be neutralized to pH with the NaOH of mass fraction 30%.The solid content of prepared polycarboxylate water-reducer is 40% left
It is right.
The preparation of retarder：Weigh 5g sodium tripolyphosphates, 10g citric acids and 4g calcium increasing agents (calcium hydroxide, calcium oxide, carbon
The weight ratio of sour calcium is 35:45:10) it is put into mixing machine, is adequately mixed uniformly, pours out.Above-mentioned mixture is slowly added to
It in the polycarboxylate water-reducer that solid content prepared by 202g is 40wt%, stirs evenly, until standing 10 without granular material in slurry
Minute.
Comparative example 1
Weigh 5g sodium tripolyphosphates, 12g citric acids and 5g calcium increasing agents (calcium hydroxide, calcium oxide, calcium carbonate weight ratio be
35:45:10) it is put into mixing machine, is adequately mixed uniformly, pours out.Above-mentioned mixture, which is slowly added to 195g solid contents, is
It in common 40% polycarboxylate water-reducer of commercially available solid content of 40wt%, stirs evenly, until standing 10 points without granular material in slurry
Clock.
Comparative example 2
The solid content for weighing the preparation of 250g embodiments 1 is the polycarboxylate water-reducer of 40wt%, as retarder.
Test case
Using the retarder product of above-described embodiment 1-5 and comparative example 1-2 as sample, while increasing by one group and being not added with retarder
Blank sample compare, the performance of the retarder product of embodiment 1-5 and comparative example 1-2 is investigated according to GB/T 9776-2008,
Setting time including gypsum, strength test.The addition of retarder is the 0.5% of desulphurization building gypsum quality when investigation.
Test result is as shown in table 1.
Table 1
As it can be seen from table 1 being simply added into the retarder of 0.5% the embodiment of the present application of building gypsum quality, so that it may
So that the setting time of building gypsum extends at least 4 times；2 hours compression strength loss≤21.4% of building gypsum are minimum strong
Degree loss can reach 10%；2 hours Rupture strength loss≤30%, minimum strength loss reach 16.7%, illustrate the application
The retarder of embodiment can effectively reduce the loss of strength of gypsum.
Although the embodiment disclosed by the application is as above, the content only for ease of understanding the application and use
Embodiment is not limited to the application.Technical staff in any the application fields, is taken off not departing from the application
Under the premise of the spirit and scope of dew, any modification and variation, but the application can be carried out in the form and details of implementation
Scope of patent protection, still should be subject to the scope of the claims as defined in the appended claims.
Claims (10)
1. a kind of method preparing polycarboxylate water-reducer, the method includes：To be selected from acrylic acid, methacrylic acid, fumaric acid
Or one or more of unsaturated acids in itaconic acid are minor comonomer, isobutene alcohol polyoxyethylene ether is polymeric monomer, hydrogen peroxide
It is initiation system with L-AA, thioacetic acid and/or mercaptopropionic acid are chain-transferring agent, and above-mentioned raw materials are added to the water, are stirred
It mixes, progress water phase is free-radical polymerized at 40~60 DEG C and reacts；Stop stirring after 2.5~5.5h, keeps the temperature 1h, it is cooling, it waits for molten
The temperature of liquid is less than 30 DEG C, and it is 7 to be neutralized to pH with lye；
Wherein, the minor comonomer：Isobutene alcohol polyoxyethylene ether：Hydrogen peroxide as active ingredients：L-AA：Chain tra nsfer
The molar ratio of agent is 3~6:1:0.15~0.5:0.01~0.5:0.01~0.5, the additive amount of water passes through the poly- carboxylic for it is expected to obtain
The solid content of sour water-reducing agent determines, and a part of the moisture in hydrogen peroxide as the total water of entire reaction system.
2. the method according to claim 1 for preparing polycarboxylate water-reducer, wherein the minor comonomer：Isobutene alcohol polyoxy
Vinethene：Hydrogen peroxide as active ingredients：L-AA：The molar ratio of chain-transferring agent is 4~5:1:0.2~0.4:0.02
~0.4:0.02~0.4.
3. the method according to claim 1 for preparing polycarboxylate water-reducer, wherein the isobutene alcohol polyoxyethylene ether
Molecular weight is in 1500~3000 ranges.
4. the method according to claim 1 for preparing polycarboxylate water-reducer, wherein the chain-transferring agent is mercaptopropionic acid.
5. the method according to claim 1 for preparing polycarboxylate water-reducer, wherein the lye be selected from NaOH, KOH,
Ba(OH)2、Ca(OH)2In the aqueous solutions of one or more of alkali be optionally that the NaOH that mass fraction is 30% is water-soluble
Liquid.
6. the method according to any one of claims 1-5 for preparing polycarboxylate water-reducer, wherein the water phase free radical
The reaction temperature of copolymerization and reaction is 45~55 DEG C, and the time of the stirring is 4h.
7. a kind of retarder, the retarder includes being subtracted according to polycarboxylic acids prepared by any one of claim 1-6 the method
Aqua, sodium tripolyphosphate, citric acid and calcium increasing agent, wherein the polycarboxylate water-reducer is calculated as 75-90 with the weight of active ingredient
Parts by weight, sodium tripolyphosphate are 1-10 parts by weight, and citric acid is 10-25 parts by weight, and calcium increasing agent is 1-10 parts by weight；Optionally,
The solid content of the polycarboxylate water-reducer is 40wt%.
8. retarder according to claim 7, wherein the polycarboxylate water-reducer is calculated as 80- with the weight of active ingredient
90 parts by weight, sodium tripolyphosphate are 2-8 parts by weight, and citric acid is 10-15 parts by weight, and calcium increasing agent is 3-8 parts by weight.
9. retarder according to claim 7 or 8, wherein the calcium increasing agent includes calcium hydroxide, calcium oxide and carbonic acid
Calcium, and the weight ratio of the calcium hydroxide, calcium oxide and calcium carbonate is 20~50：30~50：10~60；Optionally, described
The fineness of calcium increasing agent is 325 mesh.
10. a kind of method preparing the retarder according to any one of claim 7-9, the method includes：It will be described
Polycarboxylate water-reducer, sodium tripolyphosphate, citric acid and the calcium increasing agent mixing of parts by weight, it is quiet without granular material in stirring to slurry
It sets 10 minutes, you can.
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| CN201710192054.6A CN108659174A (en) | 2017-03-28 | 2017-03-28 | A kind of method preparing polycarboxylate water-reducer and a kind of retarder and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109399992A (en) * | 2018-12-04 | 2019-03-01 | 南京友西科技股份有限公司 | A kind of aqua retarder |
| CN113416283A (en) * | 2021-08-12 | 2021-09-21 | 福建钟山化工有限公司 | High-dispersibility solid polycarboxylate superplasticizer, and preparation method and application method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030494A (en) * | 2010-11-12 | 2011-04-27 | 河北金舵建材科技开发有限公司 | High-performance polycarboxylate water reducing agent and low-temperature one-step preparation method thereof |
| CN102504135A (en) * | 2011-10-19 | 2012-06-20 | 西南科技大学 | Preparation method of retarding and efficient water reducing agent for silicate cement and calcined gypsum |
| CN102674736A (en) * | 2012-05-09 | 2012-09-19 | 上海大学 | Preparation method of desulfurization building gypsum retarder |
| CN104031216A (en) * | 2014-05-26 | 2014-09-10 | 中科院广州化学有限公司 | Polyether-amide type polycarboxylic high-efficiency water reducer and preparation method thereof |
-
2017
- 2017-03-28 CN CN201710192054.6A patent/CN108659174A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030494A (en) * | 2010-11-12 | 2011-04-27 | 河北金舵建材科技开发有限公司 | High-performance polycarboxylate water reducing agent and low-temperature one-step preparation method thereof |
| CN102504135A (en) * | 2011-10-19 | 2012-06-20 | 西南科技大学 | Preparation method of retarding and efficient water reducing agent for silicate cement and calcined gypsum |
| CN102674736A (en) * | 2012-05-09 | 2012-09-19 | 上海大学 | Preparation method of desulfurization building gypsum retarder |
| CN104031216A (en) * | 2014-05-26 | 2014-09-10 | 中科院广州化学有限公司 | Polyether-amide type polycarboxylic high-efficiency water reducer and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109399992A (en) * | 2018-12-04 | 2019-03-01 | 南京友西科技股份有限公司 | A kind of aqua retarder |
| CN113416283A (en) * | 2021-08-12 | 2021-09-21 | 福建钟山化工有限公司 | High-dispersibility solid polycarboxylate superplasticizer, and preparation method and application method thereof |
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Application publication date: 20181016 |