CN115636614A - Polycarboxylate superplasticizer and preparation method thereof - Google Patents
Polycarboxylate superplasticizer and preparation method thereof Download PDFInfo
- Publication number
- CN115636614A CN115636614A CN202211218978.6A CN202211218978A CN115636614A CN 115636614 A CN115636614 A CN 115636614A CN 202211218978 A CN202211218978 A CN 202211218978A CN 115636614 A CN115636614 A CN 115636614A
- Authority
- CN
- China
- Prior art keywords
- parts
- raw materials
- polycarboxylic acid
- stirring
- reducing agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920005646 polycarboxylate Polymers 0.000 title claims abstract description 37
- 239000008030 superplasticizer Substances 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 60
- 239000002253 acid Substances 0.000 claims abstract description 49
- 239000002994 raw material Substances 0.000 claims abstract description 45
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 20
- 229920000570 polyether Polymers 0.000 claims abstract description 20
- 229920005862 polyol Polymers 0.000 claims abstract description 18
- 150000003077 polyols Chemical class 0.000 claims abstract description 18
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims abstract description 9
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims abstract description 9
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims abstract description 9
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims abstract description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 7
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 7
- 239000000194 fatty acid Substances 0.000 claims abstract description 7
- 229930195729 fatty acid Natural products 0.000 claims abstract description 7
- 150000004665 fatty acids Chemical class 0.000 claims abstract description 7
- 229920000141 poly(maleic anhydride) Polymers 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 53
- 230000001681 protective effect Effects 0.000 claims description 31
- 239000000084 colloidal system Substances 0.000 claims description 26
- 239000003999 initiator Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 239000012986 chain transfer agent Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 7
- 229920000858 Cyclodextrin Polymers 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000001116 FEMA 4028 Substances 0.000 claims description 6
- 229960004853 betadex Drugs 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 150000003254 radicals Chemical class 0.000 claims description 6
- AOBIOSPNXBMOAT-UHFFFAOYSA-N 2-[2-(oxiran-2-ylmethoxy)ethoxymethyl]oxirane Chemical compound C1OC1COCCOCC1CO1 AOBIOSPNXBMOAT-UHFFFAOYSA-N 0.000 claims description 5
- 239000002202 Polyethylene glycol Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 235000011175 beta-cyclodextrine Nutrition 0.000 claims description 4
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- 230000032683 aging Effects 0.000 claims description 3
- 150000001408 amides Chemical class 0.000 claims description 3
- WHGYBXFWUBPSRW-FOUAGVGXSA-N beta-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO WHGYBXFWUBPSRW-FOUAGVGXSA-N 0.000 claims description 3
- 238000007334 copolymerization reaction Methods 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 3
- 229920001451 polypropylene glycol Polymers 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims 2
- 238000007254 oxidation reaction Methods 0.000 claims 2
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical group SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 claims 1
- 239000004567 concrete Substances 0.000 abstract description 5
- 239000011372 high-strength concrete Substances 0.000 abstract 1
- 239000004570 mortar (masonry) Substances 0.000 description 8
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 125000003700 epoxy group Chemical group 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 150000003573 thiols Chemical group 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention relates to a polycarboxylate superplasticizer and a preparation method thereof, wherein the polycarboxylate superplasticizer is prepared from the following raw materials in parts by weight: 20-50 parts of polycarboxylic acid solution, 40-80 parts of acrylic polycarboxylic acid water reducing agent, 10-30 parts of early strength polycarboxylic acid water reducing agent, 30-50 parts of slump-retaining polycarboxylic acid water reducing agent, 25-45 parts of slow release polycarboxylic acid water reducing agent, 2-8 parts of polyether polyol A, 2-7 parts of polyether polyol B, 10-50 parts of halogenated fatty acid, 5-15 parts of hydroxypropyl methyl cellulose and 1-5 parts of hydrolyzed polymaleic anhydride. The polycarboxylate superplasticizer disclosed by the invention has good dispersibility, has very high fluidity in the application of high-strength concrete, and can greatly improve the strength of the formed concrete.
Description
Technical Field
The invention relates to the technical field of production of polycarboxylic acid water reducing agents, and particularly relates to a polycarboxylic acid water reducing agent and a preparation method thereof.
Background
The polycarboxylate water reducing agent is a high-performance water reducing agent, and is a cement dispersing agent in the application of cement concrete. The mortar is widely applied to projects such as highways, bridges, dams, tunnels, high-rise buildings and the like, and along with the acceleration of the urbanization speed in China, various mortar products including self-leveling mortar, tile glue, grouting material and the like are increasingly widely used in civilian use and industry, so that higher requirements are provided for the performance of the mortar. The traditional mortar water reducer mainly comprises naphthalene and polyamines, and the conventional mortar water reducer greatly improves the fluidity, the workability, the strength and the like of mortar when applied to mortar products due to the high water reducing rate and the good fluidity retentivity of the conventional powder polycarboxylate water reducer, but the powder polycarboxylate water reducer forming technology is not mature and mainly shows the problems of high water content, low performance, flammability and the like of the powder polycarboxylate water reducer in the drying process for preparing the powder polycarboxylate water reducer.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a polycarboxylic acid water reducing agent and a preparation method thereof.
In order to achieve the above purpose, the invention provides the following technical scheme: the polycarboxylate superplasticizer is prepared from the following raw materials in parts by weight: 20-50 parts of polycarboxylic acid solution, 40-80 parts of acrylic acid polycarboxylic acid water reducing agent, 10-30 parts of early strength polycarboxylic acid water reducing agent, 30-50 parts of slump retaining polycarboxylic acid water reducing agent, 25-45 parts of slow release polycarboxylic acid water reducing agent, 2-8 parts of polyether polyol A, 2-7 parts of polyether polyol B, 10-50 parts of halogenated fatty acid, 5-15 parts of hydroxypropyl methyl cellulose and 1-5 parts of hydrolyzed polymaleic anhydride.
Preferably, the raw materials of the polycarboxylate water reducer further comprise 5-12 parts of a compound agent, and the compound agent is a combination of polyethylene glycol diglycidyl ether, urotropine and ethanol.
More preferably, the polyether polyol A is a polypropylene oxide polyether polyol with a hydroxyl value of 200-300mgKOH/g, a functionality of 5-6 and a molecular weight of 300-500.
Further preferably, the raw materials of the polycarboxylate water reducer also comprise a protective colloid, and the protective colloid is prepared from polyvinyl alcohol, beta-cyclodextrin and methylated-beta-cyclodextrin according to the weight ratio of 1.3:1.7:2 to obtain a mixture.
The invention also comprises a preparation method of the polycarboxylate superplasticizer, which comprises the following steps:
the method comprises the following steps: preparing various raw materials, weighing the raw materials according to the proportioning weight of various components, putting the raw materials into a stirrer for stirring and mixing, sequentially putting the raw materials into the stirrer according to the putting sequence of the raw materials of the components in the mixing process, and simultaneously controlling the stirring temperature and the stirring time of the raw materials, wherein the stirring temperature is 40-50 ℃ and the stirring time is 1-2 hours;
step two: preparing a protective colloid, namely putting all raw materials for preparing the protective colloid into a stirrer to be stirred and mixed, and controlling the stirring temperature to be 30-40 ℃ and the stirring time to be 30-50min;
step three: putting the protective colloid obtained in the step two into the stirrer in the step one, and then stirring the protective colloid again at the stirring temperature of 30-40 ℃ for 10-20min to finally obtain the protective polycarboxylic acid water reducing agent;
step four: the finished product is detected, the finished product meeting the standard is filled in the containing barrel, and then the sealing treatment is carried out on the finished product.
In a further preferred mode, the outer surface of the finished product containing barrel in the fourth step is provided with a bar code, and the bar code is used for displaying the factory time, the shelf life aging and relevant information of the product.
In a further preferred mode, in the first step, the stirrer is used for stirring at a stirring speed of 1000r/min to obtain the primary polycarboxylic acid water reducing agent.
In a further preferred embodiment, the method for preparing the polycarboxylic acid water reducing agent further comprises the step of dropping a mixed solution of the unsaturated acid and the unsaturated amide monomer in the first step in the presence of a chain transfer agent to cause a radical copolymerization reaction.
In a further preferred aspect, the chain transfer agent is a thiol chain transfer agent.
In a further preferred embodiment, the first step is to add an initiator during stirring, the initiator being a free radical water soluble initiator, the initiator comprising an oxidizing component, or a combination of an oxidizing component initiator and a reducing component.
Compared with the prior art, the invention has the following beneficial effects:
the polycarboxylate water reducer disclosed by the invention has good dispersibility, has very high fluidity when being applied to high-strength-grade concrete, greatly improves the strength of formed concrete, has moderate air content, obviously improves the freeze-thaw resistance, is easy to pour and compact, greatly improves the components contained in the service life of the concrete, has high activity of epoxy groups at the end of a polyethylene glycol diglycidyl ether molecular chain, is easy to react with hydroxyl in hydroxypropyl methyl cellulose, and urotropine can promote the ring opening of the epoxy groups in the polyethylene glycol diglycidyl ether molecular chain and the cross-linking reaction with the hydroxypropyl methyl cellulose to form a three-dimensional network structure, and the network molecular chain formed by cross-linking has more hydrophilic groups and forms hydrogen bonds to attract water molecules. The polycarboxylate superplasticizer disclosed by the invention is green, environment-friendly and safe to use.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the polycarboxylate superplasticizer is prepared from the following raw materials in parts by weight: 20-50 parts of polycarboxylic acid solution, 40-80 parts of acrylic acid polycarboxylic acid water reducing agent, 10-30 parts of early strength polycarboxylic acid water reducing agent, 30-50 parts of slump retaining polycarboxylic acid water reducing agent, 25-45 parts of slow release polycarboxylic acid water reducing agent, 2-8 parts of polyether polyol A, 2-7 parts of polyether polyol B, 10-50 parts of halogenated fatty acid, 5-15 parts of hydroxypropyl methyl cellulose and 1-5 parts of hydrolyzed polymaleic anhydride.
In this embodiment, the raw materials of the polycarboxylate superplasticizer further include 5 to 12 parts of a compound agent, and the compound agent is a combination of polyethylene glycol diglycidyl ether, urotropine, and ethanol.
In this example, the polyether polyol A is a polypropylene oxide polyether polyol having a hydroxyl value of 200 to 300mgKOH/g, a functionality of 5 to 6, and a molecular weight of 300 to 500.
In this embodiment, the raw materials of the polycarboxylate water reducer further include a protective colloid, and the protective colloid is prepared from polyvinyl alcohol, β -cyclodextrin and methylated- β -cyclodextrin in a ratio of 1.3:1.7:2 to obtain a mixture.
Example 2:
the invention also comprises a preparation method of the polycarboxylate superplasticizer, which comprises the following steps:
the method comprises the following steps: preparing various raw materials, namely 20 parts of polycarboxylic acid solution, 40 parts of acrylic acid polycarboxylic acid water reducing agent, 10 parts of early strength polycarboxylic acid water reducing agent, 30 parts of slump retaining polycarboxylic acid water reducing agent, 25 parts of slow release polycarboxylic acid water reducing agent, 5 parts of polyether glycol A, 2 parts of polyether glycol B, 10 parts of halogenated fatty acid, 5-parts of hydroxypropyl methyl cellulose and 1 part of hydrolyzed polymaleic anhydride, weighing the raw materials according to the proportioning weight of the components, putting the raw materials into a stirrer to stir and mix, putting the raw materials into the stirrer in sequence according to the putting sequence of the raw materials of the components in the mixing process, and controlling the stirring temperature and the stirring time of the raw materials, wherein the stirring temperature is 40-50 ℃ and the stirring time is 1-2 hours;
step two: preparing a protective colloid, namely putting all raw materials for preparing the protective colloid into a stirrer to be stirred and mixed, and controlling the stirring temperature to be 30-40 ℃ and the stirring time to be 30-50min;
step three: putting the protective colloid obtained in the step two into the stirrer in the step one, and then stirring the protective colloid again at the stirring temperature of 30-40 ℃ for 10-20min to finally obtain the protective polycarboxylic acid water reducing agent;
step four: and detecting the finished product, filling the finished product meeting the standard into the containing barrel, and sealing the containing barrel.
Example 3:
the invention also comprises a preparation method of the polycarboxylate superplasticizer, which comprises the following steps:
the method comprises the following steps: preparing raw materials, namely 30 parts of a polycarboxylic acid solution, 45 parts of an acrylic acid polycarboxylic acid water reducing agent, 15 parts of an early strength polycarboxylic acid water reducing agent, 35 parts of a slump-retaining polycarboxylic acid water reducing agent, 25 parts of a slow release polycarboxylic acid water reducing agent, 2 parts of polyether polyol A, 2 parts of polyether polyol B, 10 parts of halogenated fatty acid, 5 parts of hydroxypropyl methyl cellulose and 1 part of hydrolyzed polymaleic anhydride, weighing the raw materials according to the proportioning weight of each component, putting the raw materials into a stirrer to be stirred and mixed, putting the raw materials into the stirrer according to the putting sequence of the raw materials of each component in the mixing process, and controlling the stirring temperature and the stirring time of the raw materials, wherein the stirring temperature is between 40 and 50 ℃, and the stirring time is between 1 and 2 hours;
step two: preparing a protective colloid, namely putting various raw materials for preparing the protective colloid into a stirrer for stirring and mixing, and controlling the stirring temperature to be 30-40 ℃ and the stirring time to be 30-50min;
step three: putting the protective colloid obtained in the step two into the stirrer in the step one, and then stirring the protective colloid again at the stirring temperature of 30-40 ℃ for 10-20min to finally obtain the protective polycarboxylate superplasticizer;
step four: the finished product is detected, the finished product meeting the standard is filled in the containing barrel, and then the sealing treatment is carried out on the finished product.
In this embodiment, the outer surface of the finished product containing barrel in the fourth step is provided with a bar code, and the bar code is used for displaying the delivery time, the shelf life aging and the relevant information of the product.
In this embodiment, in the first step, the stirrer stirs at a stirring speed of 1000r/min to obtain the primary polycarboxylic acid water reducing agent.
Example 4:
the invention also comprises a preparation method of the polycarboxylate superplasticizer, which comprises the following steps:
the method comprises the following steps: preparing raw materials, namely 50 parts of a polycarboxylic acid solution, 80 parts of an acrylic acid polycarboxylic acid water reducing agent, 30 parts of an early strength polycarboxylic acid water reducing agent, 50 parts of a slump-retaining polycarboxylic acid water reducing agent, 45 parts of a slow release polycarboxylic acid water reducing agent, 8 parts of polyether polyol A, 7 parts of polyether polyol B, 50 parts of halogenated fatty acid, 15 parts of hydroxypropyl methyl cellulose and 5 parts of hydrolyzed polymaleic anhydride, weighing the raw materials according to the proportioning weight of each component, putting the raw materials into a stirrer to be stirred and mixed, putting the raw materials into the stirrer according to the putting sequence of the raw materials of each component in the mixing process, and controlling the stirring temperature and the stirring time of the raw materials, wherein the stirring temperature is between 40 and 50 degrees, and the stirring time is between 1 and 2 hours;
step two: preparing a protective colloid, namely putting all raw materials for preparing the protective colloid into a stirrer to be stirred and mixed, and controlling the stirring temperature to be 30-40 ℃ and the stirring time to be 30-50min;
step three: putting the protective colloid obtained in the step two into the stirrer in the step one, and then stirring the protective colloid again at the stirring temperature of 30-40 ℃ for 10-20min to finally obtain the protective polycarboxylic acid water reducing agent;
step four: the finished product is detected, the finished product meeting the standard is filled in the containing barrel, and then the sealing treatment is carried out on the finished product.
In this embodiment, the preparation method of the polycarboxylic acid water reducing agent further includes, in the presence of a chain transfer agent, dropping a mixed solution of the unsaturated acid and the unsaturated amide monomer in the first step to generate a radical copolymerization reaction.
In this example, the chain transfer agent is a thiol chain transfer agent.
In this embodiment, the first step is to add an initiator while stirring, the initiator is a free radical water-soluble initiator, and the initiator comprises an oxidizing component or a combination of an oxidizing component initiator and a reducing component.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The polycarboxylate superplasticizer is characterized by comprising the following raw materials in parts by weight: 20-50 parts of polycarboxylic acid solution, 40-80 parts of acrylic polycarboxylic acid water reducing agent, 10-30 parts of early strength polycarboxylic acid water reducing agent, 30-50 parts of slump-retaining polycarboxylic acid water reducing agent, 25-45 parts of slow release polycarboxylic acid water reducing agent, 2-8 parts of polyether polyol A, 2-7 parts of polyether polyol B, 10-50 parts of halogenated fatty acid, 5-15 parts of hydroxypropyl methyl cellulose and 1-5 parts of hydrolyzed polymaleic anhydride.
2. The polycarboxylate water reducer according to claim 1, characterized in that: the raw materials of the polycarboxylate superplasticizer also comprise 5-12 parts of a compound agent, and the compound agent is a combination of polyethylene glycol diglycidyl ether, urotropine and ethanol.
3. The polycarboxylate water reducer according to claim 1, characterized in that: the polyether polyol A is polypropylene oxide polyether polyol with a hydroxyl value of 200-300mgKOH/g, a functionality of 5-6 and a molecular weight of 300-500.
4. The polycarboxylate water reducer according to claim 1, characterized in that: the raw materials of the polycarboxylate superplasticizer further comprise a protective colloid, wherein the protective colloid is prepared from polyvinyl alcohol, beta-cyclodextrin and methylated-beta-cyclodextrin according to the weight ratio of 1.3:1.7:2 to obtain a mixture.
5. The invention also comprises a preparation method of the polycarboxylate superplasticizer, which comprises the following steps:
the method comprises the following steps: preparing various raw materials, weighing the raw materials according to the proportioning weight of various components, putting the raw materials into a stirrer for stirring and mixing, sequentially putting the raw materials into the stirrer according to the putting sequence of the raw materials of the components in the mixing process, and simultaneously controlling the stirring temperature and the stirring time of the raw materials, wherein the stirring temperature is 40-50 ℃ and the stirring time is 1-2 hours;
step two: preparing a protective colloid, namely putting all raw materials for preparing the protective colloid into a stirrer to be stirred and mixed, and controlling the stirring temperature to be 30-40 ℃ and the stirring time to be 30-50min;
step three: putting the protective colloid obtained in the step two into the stirrer in the step one, and then stirring the protective colloid again at the stirring temperature of 30-40 ℃ for 10-20min to finally obtain the protective polycarboxylic acid water reducing agent;
step four: the finished product is detected, the finished product meeting the standard is filled in the containing barrel, and then the sealing treatment is carried out on the finished product.
6. The preparation method of the polycarboxylate water reducer according to claim 5, characterized by comprising the following steps: and the outer surface of the finished product containing barrel in the fourth step is provided with a bar code, and the bar code is used for displaying factory time, shelf life aging and relevant information of products.
7. The method for preparing the polycarboxylate water reducer according to the claim 5, wherein the first step is to obtain the primary polycarboxylate water reducer by stirring with a stirrer at a stirring speed of 1000 r/min.
8. The preparation method of the polycarboxylate water reducer according to claim 5, characterized by comprising the following steps: the preparation method of the polycarboxylate superplasticizer further comprises the step of dropwise adding the mixed solution of the unsaturated acid and the unsaturated amide monomer in the first step in the presence of a chain transfer agent to carry out free radical copolymerization.
9. The preparation method of the polycarboxylate water reducer according to claim 8, characterized by comprising the following steps: the chain transfer agent is a mercaptan chain transfer agent.
10. The preparation method of the polycarboxylate water reducer according to claim 5, characterized by comprising the following steps: and step one, adding an initiator while stirring, wherein the initiator is a free radical water-soluble initiator and comprises an oxidation component or a composition of the oxidation component initiator and a reduction component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211218978.6A CN115636614A (en) | 2022-10-07 | 2022-10-07 | Polycarboxylate superplasticizer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211218978.6A CN115636614A (en) | 2022-10-07 | 2022-10-07 | Polycarboxylate superplasticizer and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115636614A true CN115636614A (en) | 2023-01-24 |
Family
ID=84942376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211218978.6A Pending CN115636614A (en) | 2022-10-07 | 2022-10-07 | Polycarboxylate superplasticizer and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115636614A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116283030A (en) * | 2023-05-18 | 2023-06-23 | 石家庄市长安育才建材有限公司 | Early-strength viscosity-reducing water reducer and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105130248A (en) * | 2015-07-16 | 2015-12-09 | 岳阳东方雨虹防水技术有限责任公司 | Composite polycarboxylic acid water reducing agent and preparation method thereof |
| CN105218760A (en) * | 2015-11-09 | 2016-01-06 | 淄博德信联邦化学工业有限公司 | The preparation method of polycarboxylate water-reducer |
| CN106116213A (en) * | 2016-06-28 | 2016-11-16 | 四川宇砼建材有限公司 | Comprehensive polycarboxylate water-reducer and preparation method thereof |
| CN107556442A (en) * | 2017-09-30 | 2018-01-09 | 江苏兆佳建材科技有限公司 | A kind of comprehensive polycarboxylate water-reducer of muting sensitive sense |
| EP3653592A1 (en) * | 2018-11-16 | 2020-05-20 | Shin-Etsu Chemical Co., Ltd. | Water-reducing composition, hydraulic composition, and method for producing the same |
| CN113072320A (en) * | 2021-03-26 | 2021-07-06 | 唐山冀东水泥外加剂有限责任公司 | Water-retaining polycarboxylate superplasticizer and preparation method thereof |
-
2022
- 2022-10-07 CN CN202211218978.6A patent/CN115636614A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105130248A (en) * | 2015-07-16 | 2015-12-09 | 岳阳东方雨虹防水技术有限责任公司 | Composite polycarboxylic acid water reducing agent and preparation method thereof |
| CN105218760A (en) * | 2015-11-09 | 2016-01-06 | 淄博德信联邦化学工业有限公司 | The preparation method of polycarboxylate water-reducer |
| CN106116213A (en) * | 2016-06-28 | 2016-11-16 | 四川宇砼建材有限公司 | Comprehensive polycarboxylate water-reducer and preparation method thereof |
| CN107556442A (en) * | 2017-09-30 | 2018-01-09 | 江苏兆佳建材科技有限公司 | A kind of comprehensive polycarboxylate water-reducer of muting sensitive sense |
| EP3653592A1 (en) * | 2018-11-16 | 2020-05-20 | Shin-Etsu Chemical Co., Ltd. | Water-reducing composition, hydraulic composition, and method for producing the same |
| CN113072320A (en) * | 2021-03-26 | 2021-07-06 | 唐山冀东水泥外加剂有限责任公司 | Water-retaining polycarboxylate superplasticizer and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116283030A (en) * | 2023-05-18 | 2023-06-23 | 石家庄市长安育才建材有限公司 | Early-strength viscosity-reducing water reducer and preparation method thereof |
| CN116283030B (en) * | 2023-05-18 | 2023-08-08 | 石家庄市长安育才建材有限公司 | Early-strength viscosity-reducing water reducer and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6166113A (en) | Flexible building material compounds | |
| CN107652404B (en) | A kind of room temperature synthesis polyester polyether polycarboxylate water-reducer and preparation method thereof | |
| EP2937321A1 (en) | Slump retaining polycarboxylic acid superplasticizer | |
| CN106279559A (en) | A kind of saccharide carboxylate modified polycarboxylic acid water reducer and preparation method thereof | |
| CN111019060B (en) | Preparation method of tannic acid base star-shaped polycarboxylate superplasticizer | |
| CN108609971B (en) | Cement-based tile adhesive and composition for preparing same | |
| CN105174783A (en) | Slow-release type polycarboxylic water reducing agent, preparation method thereof and application | |
| CN107337769B (en) | Slump-retaining type polycarboxylate superplasticizer and preparation method thereof | |
| CN104973832A (en) | Anti-crack mortar and preparation method therefor | |
| CN109369860A (en) | It is sustained controllable type polycarboxylate superplasticizer mother liquor and preparation method thereof | |
| CN115636614A (en) | Polycarboxylate superplasticizer and preparation method thereof | |
| CN108456287A (en) | A kind of preparation method of low cost polycarboxylate water-reducer | |
| CN113929837B (en) | Shrinkage-reducing polycarboxylic acid water reducing agent, and preparation method and application thereof | |
| CN102807653A (en) | Co-polycarboxylic acid high efficiency water reducer capable of compounding with naphthalene formaldehyde water reducer and method for preparing same | |
| CN110590216A (en) | Permeable concrete liquid reinforcing agent and preparation method and use method thereof | |
| CN102190986B (en) | Aqueous plastic floor adhesive | |
| CN109721271B (en) | Polycarboxylate water reducing agent composition for self-compacting high-workability concrete | |
| CN104628331A (en) | Colored flexible waterproof mortar and preparation method thereof | |
| CN111606625A (en) | Formula and preparation method of C70 high-strength self-compacting concrete | |
| CN116283121A (en) | High-fluidity foam concrete and preparation method thereof | |
| CN111825372B (en) | Polycarboxylic acid high-performance water reducing agent and preparation method thereof | |
| CN108219079B (en) | Polycarboxylic acid water reducing agent, and preparation method and use method thereof | |
| CN115403341A (en) | Inorganic waterproof plugging material and preparation method thereof | |
| CN108285286A (en) | A kind of preparation method of polycarboxylate water-reducer suitable for mortar | |
| CN104609761B (en) | A kind of water reducing agent in series of polyocarboxy acid for concrete regulator and preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20230124 |