CN106810103A - A kind of preparation method of cement-based systems thixotropic agent - Google Patents
A kind of preparation method of cement-based systems thixotropic agent Download PDFInfo
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- CN106810103A CN106810103A CN201611221165.7A CN201611221165A CN106810103A CN 106810103 A CN106810103 A CN 106810103A CN 201611221165 A CN201611221165 A CN 201611221165A CN 106810103 A CN106810103 A CN 106810103A
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- thixotropic agent
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
-
- 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
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
- C04B2103/0085—Thixotropic agents
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The present invention relates to a kind of preparation method of cement-based systems thixotropic agent, belong to thixotropic agent preparing technical field.The present invention first by cornstarch in the basic conditions with epichlorohydrin reaction, followed by gelatinization, starch after gelatinization is polymerized with acrylonitrile in the presence of initiator, obtain the polymer with network structure, and by after shearing force, flow losses are small, then coconut oil is reacted in the basic conditions with butyl glycol ether, obtain soap, thixotropic agent base fluid is obtained with polymer complex, finally mixes thixotropic agent base fluid with neopelex, hydroxyethyl cellulose.Thixotropic property is superior under the high temperature conditions with thixotropic agent for cement-based systems prepared by the present invention, and after stirring 30min under the conditions of being 75 DEG C in temperature, fluid loss is 70~75mL；The compression strength of cement slurry is improve, compression strength reaches 22~25MPa after maintenance 24h.
Description
Technical field
The present invention relates to a kind of preparation method of cement-based systems thixotropic agent, belong to thixotropic agent preparing technical field.
Background technology
Thixotropic agent is a kind of new cement concrete admixture for researching and developing in recent years, adds the mesh of this additive
Be increase cement cementitious material cohesiveness and cohesive force, reduce material component separation rate, improve homogeneity and hardening
The performance of product.Thixotropic agent can form network structure in cement base gelling system, be sheared in cement base gelling system
During power, the network structure that thixotropic agent is formed is destroyed, and cement base gelling system recovers mobility, causes cement base gelling system
Viscosity reduction；When shearing force stops, thixotropic agent can re-form network structure in cement base gelling system, so that cement base
The viscosity of gelling system increases.Generally in prestressed grouting, self-leveling concrete, self-compacting concrete, under water not discrete coagulation
Thixotropic agent is added in the high flowability system such as soil, is on the one hand the rheological characteristic using its raising concrete, reduce concrete-agitating
The viscosity in stage；On the other hand using the yield stress of its raising system, so as to improve pole of the water reducer in cement-based systems
Limit volume, solve the problems, such as because water reducer excessively caused by isolation bleeding.
The thixotropic agent of research mainly includes inorganic thixotropic agent and crosslinkable polymeric species thixotropic agent at present.Common is inorganic
Class thixotropic agent has bentonite, calcium sulfate, aluminum sulfate/ferrous sulfate etc., and common crosslinkable polymeric species thixotropic agent is with zirconium etc.
Transition metal makees crosslinking agent and makees the modified cellulose system of crosslinking agent with titanium chelate.At present, thixotropic cement slurry owner
Will there are the following problems：1st, thixotropy is not strong enough, so as to its effect can not be played effectively；2nd, it is temperature sensitive, touched under normal temperature
Denaturation is preferable, but with the rising of temperature, thixotropy is decreased obviously, while volume is high, liquidity value added is fast.
The content of the invention
The technical problems to be solved by the invention：It is bad for traditional thixotropic agent thixotropy, under the high temperature conditions, thixotroping
The problem of hydraulic performance decline, there is provided after one kind is by cornstarch and epichlorohydrin reaction, then be gelatinized, then with acrylonitrile
Grafting, obtains the polymer with network structure, then by coconut oil in obtaining fat with butyl glycol ether reaction under alkalescence condition
Hydrochlorate come the method for preparing cement-based systems thixotropic agent, the present invention first by cornstarch in the basic conditions with epoxy chloropropionate
Alkane reacts, and followed by gelatinization, the starch after gelatinization is polymerized with acrylonitrile in the presence of initiator, is had
The polymer of network structure, and by after shearing force, flow losses are small, then by coconut oil and butyl glycol ether in alkaline bar
Reacted under part, obtain soap
, thixotropic agent base fluid is obtained with polymer complex, finally by thixotropic agent base fluid and neopelex, hydroxy ethyl fiber
Element mixing.Cement-based systems prepared by the present invention are good with thixotropic agent thixotropic property, and with resistance to elevated temperatures, improve water
Slurry body intensity, has broad application prospects.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
（1）Weigh 100~200g cornstarch to be added in the beaker for filling 500~600mL water, stirring 15~20min of mixing,
Starch emulsion is obtained, then the sodium chloride of starch emulsion and starch emulsion quality 6~8% is added in there-necked flask, and by flask
Be placed in water-bath, control temperature at 45~50 DEG C, then with mass fraction be 5% sodium hydroxide solution adjust pH for 10.2~
After 10.5, in flask be added dropwise 40~50mL epoxychloropropane, control 20~25min in completion of dropping, insulated and stirred reaction 3~
4h；
（2）After above-mentioned reaction terminates, in product add mass fraction be 10% salt acid for adjusting pH be 6.5~6.8 after, filtering,
Filter cake is collected, and with absolute ethanol washing 3~5 times, obtains modified starch, weighed 20~30g modified starches and be added to and fill 400
In the there-necked flask of~500mL water, flask is placed in oil bath pan, controls temperature at 95~100 DEG C, insulation gelatinization 30~
40min；
（3）After gelatinization terminates, stop heating, when temperature is down to 30~40 DEG C, addition 1~3g ammonium persulfates, stirring mixing 2~
After 3min, under nitrogen protection to 15~20mL acrylonitrile is added dropwise in flask, completion of dropping in 10~15min of control, stirring is anti-
Answer 2~3h, question response to terminate, collect product, and product is filtered, collect filter residue, filter residue is washed 2~3 times with acetone, obtain
Graft polymers；
（4）Count by weight, weigh 6~8 parts of above-mentioned graft polymers, 15~20 portions of butyl glycol ethers, 1~3 portion of coconut oil
It is 5% sodium hydroxide solution with 3~5 parts of mass fractions, is added in beaker, and it is carried out to be heated to 70~80 DEG C, stirring is anti-
2~3h is answered, thixotropic agent base fluid is obtained；
（5）Count by weight, weigh 30~40 parts of above-mentioned thixotropic agent base fluids, 1~3 part of dodecyl sodium sulfate and 2~5 parts of hydroxyls
Ethyl cellulose, is added in beaker, and it is carried out to be heated to 45~55 DEG C, 25~30min of stirring mixing, you can obtain water
Mud matrix system thixotropic agent.
Application process of the invention：Count by weight, 270~320 parts of portland cements, 5~8 parts of propylene are weighed respectively
Acid amides, 1~2 part of calcium lignosulfonate, cement-based systems thixotropic agent prepared by 4~5 parts of present invention, 90~95 parts of water, first
Inject water into slurry agitator tank, then by acrylamide, calcium lignosulfonate injection slurry agitator tank, stirring is until mixing
Uniformly, portland cement is added while stirring, and after 5~7min of stirring, the cement-based systems for continuously adding present invention preparation use tactile
Become agent, stir 15~40s, obtain thixotroping slurry, be finally used to thixotroping slurry construct.After testing, made using the present invention
The thixotroping slurry that standby cement-based systems thixotropic agent is prepared, after stirring 30min under the conditions of being 75 DEG C in temperature, fluid loss
It is 70~75mL, thixotroping slurry compression strength reaches 22~25MPa after maintenance 24h.
Compared with other method, Advantageous Effects are the present invention：
（1）Thixotropic property is superior under the high temperature conditions with thixotropic agent for cement-based systems prepared by the present invention, is 75 DEG C of bars in temperature
After stirring 30min under part, fluid loss is 70~75mL；
（2）Cement-based systems prepared by the present invention are superior with thixotropic agent thixotropic property, are favorably improved the bonding of cement-based systems
Power and cohesiveness；
（3）Cement-based systems thixotropic agent prepared by the present invention improves the compression strength of cement slurry, pressure resistance after maintenance 24h
Degree reaches 22~25MPa.
Specific embodiment
100~200g cornstarch is weighed first to be added in the beaker for filling 500~600mL water, stirring mixing 15~
20min, obtains starch emulsion, and the sodium chloride of starch emulsion and starch emulsion quality 6~8% is added in there-necked flask, and will
Flask is placed in water-bath, and control temperature is at 45~50 DEG C, then is that 5% sodium hydroxide solution regulation pH is 10.2 with mass fraction
After~10.5, to 40~50mL epoxychloropropane is added dropwise in flask, completion of dropping in 20~25min of control, insulated and stirred reacts 3
~4h；Reaction terminates, in product add mass fraction be 10% salt acid for adjusting pH be 6.5~6.8 after, filtering, collect filter cake,
And with absolute ethanol washing 3~5 times, modified starch is obtained, weigh 20~30g modified starches and be added to and fill 400~500mL water
There-necked flask in, flask is placed in oil bath pan, control temperature at 95~100 DEG C, insulation gelatinization 30~40min；Gelatinization knot
Shu Hou, stops heating, when temperature is down to 30~40 DEG C, 1~3g ammonium persulfates is added, after 2~3min of stirring mixing, in nitrogen
To 15~20mL acrylonitrile is added dropwise in flask under protection, completion of dropping, 2~3h of stirring reaction, question response in 10~15min are controlled
Terminate, collect product, and product is filtered, collect filter residue, filter residue is washed 2~3 times with acetone, obtain graft polymers；Connect
And count by weight, weigh 6~8 parts of above-mentioned graft polymers, 15~20 portions of butyl glycol ethers, 1~3 portion of coconut oil and 3~5
Part mass fraction is 5% sodium hydroxide solution, is added in beaker, and carries out being heated to 70~80 DEG C to it, stirring reaction 2~
3h, obtains thixotropic agent base fluid；Finally count by weight, weigh 30~40 parts of above-mentioned thixotropic agent base fluids, 1~3 part of dodecyl
Benzene sulfonic acid sodium salt and 2~5 parts of hydroxyethyl celluloses, are added in beaker, and it is carried out to be heated to 45~55 DEG C, stirring mixing 25
~30min, you can obtain cement-based systems thixotropic agent.
Example 1
Weigh 200g cornstarch first to be added in the beaker for filling 600mL water, stirring mixing 20min obtains starch emulsion,
The sodium chloride of starch emulsion and starch emulsion quality 8% is added in there-necked flask again, and flask is placed in water-bath, controlled
Temperature processed at 50 DEG C, then with mass fraction be 5% sodium hydroxide solution adjust pH be 10.5 after, in flask be added dropwise 50mL epoxies
Chloropropane, completion of dropping in control 25min, insulated and stirred reaction 4h；After above-mentioned reaction terminates, divide to quality is added in product
Number is that after 6.8, filter cake is collected in filtering, and with absolute ethanol washing 5 times, obtains modified starch, is weighed for 10% salt acid for adjusting pH
30g modified starches are added in the there-necked flask for filling 500mL water, and flask is placed in oil bath pan, control temperature at 100 DEG C,
Insulation gelatinization 40min；After gelatinization terminates, stop heating, when temperature is down to 40 DEG C, add 3g ammonium persulfates, stirring mixing
After 3min, under nitrogen protection to 20mL acrylonitrile is added dropwise in flask, completion of dropping in control 15min, stirring reaction 3h treats anti-
Should terminate, collect product, and product is filtered, collect filter residue, filter residue is washed 3 times with acetone, obtain graft polymers；Then
Count by weight, it is 5% to weigh 8 parts of above-mentioned graft polymers, 20 parts of butyl glycol ethers, 3 portions of coconut oil and 5 parts of mass fractions
Sodium hydroxide solution, is added in beaker, and it is carried out to be heated to 80 DEG C, and stirring reaction 2h obtains thixotropic agent base fluid；Finally
Count by weight, weigh 40 parts of above-mentioned thixotropic agent base fluids, 3 parts of neopelexes and 5 parts of hydroxyethyl celluloses, add
To in beaker, and it is carried out to be heated to 45 DEG C, stirring mixing 25min, you can obtain cement-based systems thixotropic agent.
Count by weight, 320 parts of portland cements, 8 parts of acrylamides, 2 parts of calcium lignosulfonates, 5 parts are weighed respectively
Cement-based systems thixotropic agent prepared by the present invention, 95 parts of water, in injecting water into slurry agitator tank first, then by acryloyl
In amine, calcium lignosulfonate injection slurry agitator tank, stirring adds portland cement while stirring up to well mixed, stirs
After 7min, the cement-based systems thixotropic agent of present invention preparation is continuously added, stir 40s, thixotroping slurry is obtained, finally by thixotroping
Slurry is used to construct.After testing, the thixotroping slurry that the cement-based systems thixotropic agent for being prepared using the present invention is prepared,
After stirring 30min under the conditions of being 75 DEG C in temperature, fluid loss is 75mL, and thixotroping slurry compression strength reaches after maintenance 24h
25MPa。
Example 2
Weigh 100g cornstarch first to be added in the beaker for filling 500mL water, stirring mixing 15min obtains starch emulsion,
The sodium chloride of starch emulsion and starch emulsion quality 6% is added in there-necked flask again, and flask is placed in water-bath, controlled
Temperature processed at 45 DEG C, then with mass fraction be 5% sodium hydroxide solution adjust pH be 10.2 after, in flask be added dropwise 40mL epoxies
Chloropropane, completion of dropping in control 20min, insulated and stirred reaction 3h；After above-mentioned reaction terminates, divide to quality is added in product
Number is that after 6.5, filter cake is collected in filtering, and with absolute ethanol washing 3 times, obtains modified starch, is weighed for 10% salt acid for adjusting pH
20g modified starches are added in the there-necked flask for filling 400mL water, and flask is placed in oil bath pan, and control temperature is protected at 95 DEG C
Temperature gelatinization 30min；After gelatinization terminates, stop heating, when temperature is down to 30 DEG C, add 1g ammonium persulfates, stirring mixing 2min
Afterwards, completion of dropping, stirring reaction 2h, question response knot in 10min are controlled to 15mL acrylonitrile is added dropwise in flask under nitrogen protection
Beam, collects product, and product is filtered, and collects filter residue, and filter residue is washed 2 times with acetone, obtains graft polymers；Then by weight
Amount number meter, it is 5% hydrogen-oxygen to weigh 6 parts of above-mentioned graft polymers, 15 parts of butyl glycol ethers, 1 portion of coconut oil and 3 parts of mass fractions
Change sodium solution, be added in beaker, and it is carried out to be heated to 70 DEG C, stirring reaction 2h obtains thixotropic agent base fluid；Finally by weight
Amount number meter, weighs 30 parts of above-mentioned thixotropic agent base fluids, 1 part of neopelex and 2 parts of hydroxyethyl celluloses, is added to burning
In cup, and it is carried out to be heated to 50 DEG C, stirring mixing 30min, you can obtain cement-based systems thixotropic agent.
Count by weight, 270 parts of portland cements, 5 parts of acrylamides, 1 part of calcium lignosulfonate, 4 parts are weighed respectively
Cement-based systems thixotropic agent prepared by the present invention, 90 parts of water, in injecting water into slurry agitator tank first, then by acryloyl
In amine, calcium lignosulfonate injection slurry agitator tank, stirring adds portland cement while stirring up to well mixed, stirs
After 5min, the cement-based systems thixotropic agent of present invention preparation is continuously added, stir 15s, thixotroping slurry is obtained, finally by thixotroping
Slurry is used to construct.After testing, the thixotroping slurry that the cement-based systems thixotropic agent for being prepared using the present invention is prepared,
After stirring 30min under the conditions of being 75 DEG C in temperature, fluid loss is 70mL, and thixotroping slurry compression strength reaches after maintenance 24h
22MPa。
Example 3
Weigh 150g cornstarch first to be added in the beaker for filling 550mL water, stirring mixing 17min obtains starch emulsion,
The sodium chloride of starch emulsion and starch emulsion quality 7% is added in there-necked flask again, and flask is placed in water-bath, controlled
Temperature processed at 47 DEG C, then with mass fraction be 5% sodium hydroxide solution adjust pH be 10.3 after, in flask be added dropwise 45mL epoxies
Chloropropane, completion of dropping in control 22min, insulated and stirred reaction 4h；After above-mentioned reaction terminates, divide to quality is added in product
Number is that after 6.7, filter cake is collected in filtering, and with absolute ethanol washing filter cake 4 times, obtains modified starch for 10% salt acid for adjusting pH,
Weigh 25g modified starches to be added in the there-necked flask for filling 450mL water, flask is placed in oil bath pan, control temperature is 97
DEG C, insulation gelatinization 35min；After gelatinization terminates, stop heating, when temperature is down to 35 DEG C, add 2g ammonium persulfates, stirring mixing
After 2min, under nitrogen protection to 17mL acrylonitrile is added dropwise in flask, completion of dropping in control 12min, stirring reaction 2h treats anti-
Should terminate, collect product, and product is filtered, collect filter residue, filter residue is washed 2 times with acetone, obtain graft polymers；Then
Count by weight, it is 5% to weigh 7 parts of above-mentioned graft polymers, 17 parts of butyl glycol ethers, 2 portions of coconut oil and 4 parts of mass fractions
Sodium hydroxide solution, is added in beaker, and it is carried out to be heated to 75 DEG C, and stirring reaction 3h obtains thixotropic agent base fluid；Finally
Count by weight, weigh 35 parts of above-mentioned thixotropic agent base fluids, 2 parts of neopelexes and 3 parts of hydroxyethyl celluloses, add
To in beaker, and it is carried out to be heated to 55 DEG C, stirring mixing 28min, you can obtain cement-based systems thixotropic agent.
Count by weight, 300 parts of portland cements, 7 parts of acrylamides, 2 parts of calcium lignosulfonates, 4 parts are weighed respectively
Cement-based systems thixotropic agent prepared by the present invention, 92 parts of water, in injecting water into slurry agitator tank first, then by acryloyl
In amine, calcium lignosulfonate injection slurry agitator tank, stirring adds portland cement while stirring up to well mixed, stirs
After 6min, the cement-based systems thixotropic agent of present invention preparation is continuously added, stir 40s, thixotroping slurry is obtained, finally by thixotroping
Slurry is used to construct.After testing, the thixotroping slurry that the cement-based systems thixotropic agent for being prepared using the present invention is prepared,
After stirring 30min under the conditions of being 75 DEG C in temperature, fluid loss is 72mL, and thixotroping slurry compression strength reaches after maintenance 24h
23MPa。
Claims (1)
1. a kind of preparation method of cement-based systems thixotropic agent, it is characterised in that specific preparation process is：
（1）Weigh 100~200g cornstarch to be added in the beaker for filling 500~600mL water, stirring 15~20min of mixing,
Starch emulsion is obtained, then the sodium chloride of starch emulsion and starch emulsion quality 6~8% is added in there-necked flask, and by flask
Be placed in water-bath, control temperature at 45~50 DEG C, then with mass fraction be 5% sodium hydroxide solution adjust pH for 10.2~
After 10.5, in flask be added dropwise 40~50mL epoxychloropropane, control 20~25min in completion of dropping, insulated and stirred reaction 3~
4h；
（2）After above-mentioned reaction terminates, in product add mass fraction be 10% salt acid for adjusting pH be 6.5~6.8 after, filtering,
Filter cake is collected, and with absolute ethanol washing 3~5 times, obtains modified starch, weighed 20~30g modified starches and be added to and fill 400
In the there-necked flask of~500mL water, flask is placed in oil bath pan, controls temperature at 95~100 DEG C, insulation gelatinization 30~
40min；
（3）After gelatinization terminates, stop heating, when temperature is down to 30~40 DEG C, addition 1~3g ammonium persulfates, stirring mixing 2~
After 3min, under nitrogen protection to 15~20mL acrylonitrile is added dropwise in flask, completion of dropping in 10~15min of control, stirring is anti-
Answer 2~3h, question response to terminate, collect product, and product is filtered, collect filter residue, filter residue is washed 2~3 times with acetone, obtain
Graft polymers；
（4）Count by weight, weigh 6~8 parts of above-mentioned graft polymers, 15~20 portions of butyl glycol ethers, 1~3 portion of coconut oil
It is 5% sodium hydroxide solution with 3~5 parts of mass fractions, is added in beaker, and it is carried out to be heated to 70~80 DEG C, stirring is anti-
2~3h is answered, thixotropic agent base fluid is obtained；
（5）Count by weight, weigh 30~40 parts of above-mentioned thixotropic agent base fluids, 1~3 part of dodecyl sodium sulfate and 2~5 parts of hydroxyls
Ethyl cellulose, is added in beaker, and it is carried out to be heated to 45~55 DEG C, 25~30min of stirring mixing, you can obtain water
Mud matrix system thixotropic agent.
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| CN107827399A (en) * | 2017-11-09 | 2018-03-23 | 安徽艾米伦特建材科技有限公司 | Cement mortar and preparation method thereof |
| CN107827387A (en) * | 2017-11-09 | 2018-03-23 | 安徽艾米伦特建材科技有限公司 | Cement mortar water-loss reducer and preparation method thereof |
| CN108586665A (en) * | 2018-04-16 | 2018-09-28 | 科之杰新材料集团有限公司 | A kind of preparation method of ethers water conservation thixotropic polycarboxylate water-reducer |
| CN108675671A (en) * | 2018-06-12 | 2018-10-19 | 中铁四局集团有限公司 | A kind of special thixotropic agent of 3D printing concrete |
| CN109180879A (en) * | 2018-09-20 | 2019-01-11 | 方建波 | A kind of preparation method of leak stopping oil well cement paste thixotropic agent |
| CN109704610A (en) * | 2019-01-28 | 2019-05-03 | 江苏奔拓电气科技有限公司 | A kind of preparation method of high temperature resistant thixotropic agent |
| CN114772976A (en) * | 2022-03-30 | 2022-07-22 | 武汉源锦建材科技有限公司 | Anti-freezing anti-cracking concrete waterproofing agent and preparation method thereof |
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| CN107827399A (en) * | 2017-11-09 | 2018-03-23 | 安徽艾米伦特建材科技有限公司 | Cement mortar and preparation method thereof |
| CN107827387A (en) * | 2017-11-09 | 2018-03-23 | 安徽艾米伦特建材科技有限公司 | Cement mortar water-loss reducer and preparation method thereof |
| CN108586665A (en) * | 2018-04-16 | 2018-09-28 | 科之杰新材料集团有限公司 | A kind of preparation method of ethers water conservation thixotropic polycarboxylate water-reducer |
| CN108586665B (en) * | 2018-04-16 | 2020-07-03 | 科之杰新材料集团有限公司 | Preparation method of ether water-retention thixotropic polycarboxylate superplasticizer |
| CN108675671A (en) * | 2018-06-12 | 2018-10-19 | 中铁四局集团有限公司 | A kind of special thixotropic agent of 3D printing concrete |
| CN108675671B (en) * | 2018-06-12 | 2021-05-25 | 中铁四局集团有限公司 | Special thixotropic agent for 3D printing concrete |
| CN109180879A (en) * | 2018-09-20 | 2019-01-11 | 方建波 | A kind of preparation method of leak stopping oil well cement paste thixotropic agent |
| CN109704610A (en) * | 2019-01-28 | 2019-05-03 | 江苏奔拓电气科技有限公司 | A kind of preparation method of high temperature resistant thixotropic agent |
| CN114772976A (en) * | 2022-03-30 | 2022-07-22 | 武汉源锦建材科技有限公司 | Anti-freezing anti-cracking concrete waterproofing agent and preparation method thereof |
| CN114772976B (en) * | 2022-03-30 | 2023-03-10 | 武汉源锦建材科技有限公司 | Anti-freezing anti-cracking concrete waterproofing agent and preparation method thereof |
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