CN110922914B - Environment-friendly low-temperature-resistant concrete interface treating agent and preparation method thereof - Google Patents
Environment-friendly low-temperature-resistant concrete interface treating agent and preparation method thereof Download PDFInfo
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- CN110922914B CN110922914B CN201911106000.9A CN201911106000A CN110922914B CN 110922914 B CN110922914 B CN 110922914B CN 201911106000 A CN201911106000 A CN 201911106000A CN 110922914 B CN110922914 B CN 110922914B
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- 238000002360 preparation method Methods 0.000 title abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 33
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 29
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000839 emulsion Substances 0.000 claims abstract description 13
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 10
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 10
- 239000003755 preservative agent Substances 0.000 claims abstract description 10
- 230000002335 preservative effect Effects 0.000 claims abstract description 10
- 239000003054 catalyst Substances 0.000 claims abstract description 8
- 239000007864 aqueous solution Substances 0.000 claims description 21
- 239000011259 mixed solution Substances 0.000 claims description 10
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical group O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 230000007935 neutral effect Effects 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- CBTVGIZVANVGBH-UHFFFAOYSA-N aminomethyl propanol Chemical group CC(C)(N)CO CBTVGIZVANVGBH-UHFFFAOYSA-N 0.000 claims description 5
- 150000007522 mineralic acids Chemical class 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 abstract description 7
- 230000001070 adhesive effect Effects 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000004568 cement Substances 0.000 description 12
- 238000000576 coating method Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 238000007788 roughening Methods 0.000 description 5
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000003746 surface roughness Effects 0.000 description 4
- 230000001476 alcoholic effect Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 125000003172 aldehyde group Chemical group 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- -1 on one hand Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000012758 reinforcing additive Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/04—Homopolymers or copolymers of ethene
- C09J123/08—Copolymers of ethene
- C09J123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C09J123/0853—Vinylacetate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses an environment-friendly low-temperature-resistant concrete interface treating agent and a preparation method thereof, belonging to the technical field of adhesion. The concrete interface treating agent comprises the following components in parts by mass: 750-850 parts of water, 50-90 parts of polyvinyl alcohol, 1-3 parts of a catalyst, 1-2 parts of a crosslinking agent, 2-3 parts of a pH regulator, 100-150 parts of an EVA emulsion, 3-5 parts of citric acid, 10 parts of silica sol, 2-3 parts of a defoaming agent and 1-2 parts of a preservative. The concrete interface treating agent has the characteristics of high adhesive force, high shear strength, low temperature resistance, environmental protection, no pollution, short production working hour and low energy consumption.
Description
Technical Field
The invention belongs to the technical field of adhesion, and particularly relates to an environment-friendly low-temperature-resistant concrete interface treating agent and a preparation method thereof.
Background
The concrete interface treating agent is widely used in building engineering and is an indispensable material in building engineering, and the concrete interface treating agent is mainly used for building concrete surface roughening to improve the surface roughness of concrete and enhance the adhesive force of a coating and a wall body, thereby playing a role in preventing inner and outer wall coatings from falling off and hollowing. The prior concrete interface treating agent has the problems of insufficient binding power, insufficient strength of a napped layer formed by cement, poor low-temperature resistance and the like, and construction of the concrete interface treating agent is limited.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an environment-friendly low-temperature-resistant concrete interface treating agent and a preparation method thereof.
The purpose of the invention adopts the following technical scheme: an environment-friendly low-temperature-resistant concrete interface treating agent comprises the following components in parts by mass: 750-850 parts of water, 50-90 parts of polyvinyl alcohol, 1-3 parts of a catalyst, 1-2 parts of a crosslinking agent, 2-3 parts of a pH regulator, 100-150 parts of an EVA emulsion, 3-5 parts of citric acid, 10 parts of silica sol, 2-3 parts of a defoaming agent and 1-2 parts of a preservative.
Further, the catalyst is a strong inorganic acid capable of complete ionization.
Further, the cross-linking agent is a neutral aqueous solution of glutaraldehyde with the concentration of 20 wt%.
Further, the pH regulator is AMP-95.
Further, the silica sol was a silica sol having a concentration of 25 wt%.
Further, the environment-friendly low-temperature-resistant concrete interface treating agent is prepared by the following method:
(1) weighing 750-850 parts of water, 50-90 parts of polyvinyl alcohol, 1-3 parts of catalyst, 1-2 parts of cross-linking agent, 2-3 parts of pH regulator, 100-150 parts of EVA emulsion, 3-5 parts of citric acid, 10 parts of silica sol, 2-3 parts of defoaming agent and 1-2 parts of preservative;
(2) placing polyvinyl alcohol and 700 parts by mass of 500-one water in a container at 90 ℃, uniformly mixing, and adding the rest water to obtain a polyvinyl alcohol aqueous solution;
(3) and (3) reducing the temperature of the polyvinyl alcohol aqueous solution in the step (2) to 76 ℃, sequentially adding a catalyst and a cross-linking agent, and preserving the heat at 76-80 ℃ for 60 minutes to obtain a first mixed solution.
(4) And cooling the first mixed solution to 55 ℃, adding a pH regulator, regulating the pH to 5-6, sequentially adding EVA emulsion, citric acid, silica sol, a defoaming agent and a preservative, and uniformly stirring to obtain the environment-friendly low-temperature-resistant concrete interface treating agent.
Compared with the prior art, the invention has the beneficial effects that:
(1) the glutaraldehyde neutral aqueous solution is used as a cross-linking agent of the polyvinyl alcohol, on one hand, formaldehyde is prevented from being introduced, on the other hand, the polyvinyl alcohol is modified through cross-linking, so that alcoholic hydroxyl and aldehyde groups are cross-linked to form a network structure, the molecular weight and the ductility of molecular chain segments are improved, meanwhile, the hydrogen bond effect in polyvinyl alcohol molecules can be weakened, and the freezing resistance is improved.
(2) The EVA emulsion can resist acid and alkali, has strong molecular chain segment rigidity and has a reinforcing effect on cement; meanwhile, the silicon oxide solution also has a reinforcing effect.
(3) The citric acid can enhance the metal ions in the cement to be converted into crystal salt and inhibit the cement from being halogenated, thereby improving the compactness and strength of the cement and improving the water resistance of the cement.
Through elaborate design, the finally obtained environment-friendly low-temperature-resistant concrete interface treating agent has the characteristics of high adhesive force, high shear strength, low temperature resistance, environmental protection, no pollution, short production working hour and low energy consumption.
Detailed Description
In order to make the purpose and technical solutions of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but 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
(1) Putting 60 parts by mass of polyvinyl alcohol and 600 parts by mass of water into a container at 90 ℃, uniformly mixing, and then adding 200 parts by mass of water to obtain a polyvinyl alcohol aqueous solution;
(2) and (2) reducing the temperature of the polyvinyl alcohol aqueous solution to 76 ℃, sequentially adding 2 parts by mass of hydrochloric acid with the concentration of 35 wt% and 2 parts by mass of glutaraldehyde neutral aqueous solution with the concentration of 20 wt%, and preserving the temperature for 60 minutes at 76 ℃ to obtain a first mixed solution.
(3) And cooling the first mixed solution to 55 ℃, adding 3 parts by mass of AMP-95, adjusting the pH value to 5, sequentially adding 100 parts by mass of EVA emulsion, 5 parts by mass of citric acid, 10 parts by mass of silica sol, 2 parts by mass of defoaming agent and 1 part by mass of preservative, uniformly stirring to obtain the environment-friendly low-temperature-resistant concrete interface treating agent, storing in the shade, sealing and storing, and keeping the quality guarantee period at normal temperature for 2 years.
The environment-friendly low-temperature-resistant concrete interface treating agent prepared by the method is used for roughening the surface of concrete so as to improve the surface roughness of the concrete, enhance the adhesive force between a coating and a wall body and detect the performance of the coating, and the result is shown in table 1.
Example 2
(1) Putting 50 parts by mass of polyvinyl alcohol and 500 parts by mass of water into a container at 90 ℃, uniformly mixing, and then adding 250 parts by mass of water to obtain a polyvinyl alcohol aqueous solution;
(2) and (2) reducing the temperature of the polyvinyl alcohol aqueous solution to 76 ℃, sequentially adding 1 part by mass of sulfuric acid with the concentration of 20 wt% and 1 part by mass of glutaraldehyde neutral aqueous solution with the concentration of 20 wt%, and preserving the temperature for 60 minutes at 76 ℃ to obtain a first mixed solution.
(3) And cooling the first mixed solution to 55 ℃, adding 2 parts by mass of AMP-95, adjusting the pH value to 5, sequentially adding 100 parts by mass of EVA emulsion, 3 parts by mass of citric acid, 10 parts by mass of silica sol, 2 parts by mass of defoaming agent and 2 parts by mass of preservative, uniformly stirring to obtain the environment-friendly low-temperature-resistant concrete interface treating agent, storing in the shade, sealing and storing, and keeping the quality guarantee period at normal temperature for 2 years.
The environment-friendly low-temperature-resistant concrete interface treating agent prepared by the method is used for roughening the surface of concrete so as to improve the surface roughness of the concrete, enhance the adhesive force between a coating and a wall body and detect the performance of the coating, and the result is shown in table 1.
Example 3
(1) Putting 90 parts by mass of polyvinyl alcohol and 700 parts by mass of water into a container at 90 ℃, uniformly mixing, and then adding 150 parts by mass of water to obtain a polyvinyl alcohol aqueous solution;
(2) and (2) reducing the temperature of the polyvinyl alcohol aqueous solution to 76 ℃, sequentially adding 2 parts by mass of nitric acid with the concentration of 20 wt% and 2 parts by mass of glutaraldehyde neutral aqueous solution with the concentration of 20 wt%, and preserving the temperature for 60 minutes at 76 ℃ to obtain a first mixed solution.
(3) And cooling the first mixed solution to 55 ℃, adding 5 parts by mass of AMP-95, adjusting the pH value to 6, sequentially adding 150 parts by mass of EVA emulsion, 5 parts by mass of citric acid, 10 parts by mass of silica sol, 3 parts by mass of defoaming agent and 1 part by mass of preservative, uniformly stirring to obtain the environment-friendly low-temperature-resistant concrete interface treating agent, storing in the shade, sealing and storing, and keeping the quality guarantee period at normal temperature for 2 years.
The environment-friendly low-temperature-resistant concrete interface treating agent prepared by the method is used for roughening the surface of concrete so as to improve the surface roughness of the concrete, enhance the adhesive force between a coating and a wall body and detect the performance of the coating, and the result is shown in table 1.
Comparative example
(1) Putting 60 parts by mass of polyvinyl alcohol and 600 parts by mass of water into a container at 90 ℃, uniformly mixing, and then adding 150 parts by mass of water to obtain a polyvinyl alcohol aqueous solution;
(2) reducing the temperature of the polyvinyl alcohol aqueous solution to 72 ℃, sequentially adding 1 part by mass of emulsifier op-10 and 12 parts by mass of ammonium persulfate aqueous solution with the concentration of 2.5 wt% as an initiator, beginning to dropwise add a mixed monomer of 70 parts by mass of vinyl acetate and 10 parts by mass of butyl acrylate at 78 ℃, and simultaneously dropwise adding 28 parts by mass of ammonium persulfate aqueous solution with the concentration of 2.5 wt%, wherein the dropwise adding time is 90 min;
(3) after the mixed monomer is dripped, heating to 88 ℃ and preserving the temperature for 60 min;
(4) adding 100 parts by mass of water, cooling to 55 ℃, sequentially adding 1 part by mass of sodium bicarbonate, 1 part by mass of defoaming agent and 1 part by mass of preservative, and uniformly stirring to obtain the concrete interface treating agent.
The concrete interface treating agent prepared by the method is used for roughening the surface interface of concrete and detecting the performance of the concrete interface treating agent, and the result is shown in table 1.
TABLE 1 concrete interface treating agent Properties of examples 1 to 3 and comparative examples
And (4) analyzing results: the concrete interface treating agent prepared by the method of the embodiment 1-3 has the characteristics of strong low-temperature stability, high film forming hardness, high bonding strength and the like, and is characterized in that a neutral aqueous solution of glutaraldehyde is used as a cross-linking agent of polyvinyl alcohol, so that on one hand, introduction of formaldehyde is avoided, on the other hand, the polyvinyl alcohol is modified by cross-linking, alcoholic hydroxyl and aldehyde groups are cross-linked to form a network structure, the molecular weight and the ductility of a molecular chain segment are improved, meanwhile, the hydrogen bond effect in polyvinyl alcohol molecules can be weakened, and the freezing resistance is improved; the adopted EVA emulsion can resist acid and alkali, and the molecular chain segment of the EVA emulsion has strong rigidity and has a reinforcing effect on cement; meanwhile, the silicon oxide solution also has a reinforcing effect; the adopted citric acid can enhance the metal ions in the cement to be converted into crystal salt and simultaneously inhibit the cement from returning halogen, the compactness and strength of the cement are improved, and the water resistance of the cement is improved, while the concrete interface treating agent in the comparative example has poor performances such as low-temperature stability, film-forming hardness, bonding strength and the like, because the polyvinyl alcohol of the system has strong hydrophilicity, the extensibility and flexibility are reduced after the alcoholic hydroxyl and water form hydrogen bonds, molecular chains are extruded and broken in the freezing and thawing process, and the molecular structure is damaged, so that the low-temperature stability of the cement is poor; the molecular chain of the adopted polyvinyl acetate emulsion does not have a rigid chain segment, and the system does not have a reinforcing additive, so that the film-forming hardness is insufficient, and the bonding strength is low. Therefore, the concrete interface treating agent has the characteristics of high adhesive force, high shear strength, low temperature resistance, environmental protection, no pollution, short production working hour and low energy consumption.
It should be noted that the above examples are only for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and it should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the present invention may have various changes and modifications without departing from the spirit and scope of the invention, and these changes and modifications fall into the scope of the claimed invention.
Claims (4)
1. The environment-friendly low-temperature-resistant concrete interface treating agent is characterized by comprising the following components in parts by mass: 750-850 parts of water, 50-90 parts of polyvinyl alcohol, 1-3 parts of a catalyst, 1-2 parts of a crosslinking agent, 2-3 parts of a pH regulator, 100-150 parts of an EVA emulsion, 3-5 parts of citric acid, 10 parts of silica sol, 2-3 parts of a defoaming agent and 1-2 parts of a preservative; the cross-linking agent is a glutaraldehyde neutral aqueous solution with the concentration of 20 wt%;
the environment-friendly low-temperature-resistant concrete interface treating agent is prepared by the following method:
(1) weighing the components;
(2) placing polyvinyl alcohol and 700 parts by mass of 500-one water in a container at 90 ℃, uniformly mixing, and adding the rest water to obtain a polyvinyl alcohol aqueous solution;
(3) reducing the temperature of the polyvinyl alcohol aqueous solution in the step 2 to 76 ℃, sequentially adding a catalyst and a cross-linking agent, and preserving the heat at 76-80 ℃ for 60 minutes to obtain a first mixed solution;
(4) and cooling the first mixed solution to 55 ℃, adding a pH regulator, regulating the pH to 5-6, sequentially adding EVA emulsion, citric acid, silica sol, a defoaming agent and a preservative, and uniformly stirring to obtain the environment-friendly low-temperature-resistant concrete interface treating agent.
2. The environment-friendly low temperature resistant concrete interface treating agent as recited in claim 1, wherein the catalyst is a strong inorganic acid capable of complete ionization.
3. The environment-friendly low temperature resistant concrete interface treating agent as recited in claim 1, wherein the pH regulator is AMP-95.
4. The environment-friendly low temperature resistant concrete interface treating agent according to claim 1, wherein the silica sol is silica sol with a concentration of 25 wt%.
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| CN114479680B (en) * | 2022-02-10 | 2024-03-29 | 珠海华萃科技有限公司 | Upper wall mixed film for soft film display screen and use method thereof |
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| CN109082171A (en) * | 2018-06-08 | 2018-12-25 | 科顺防水科技股份有限公司 | A kind of concrete interface treating agent and preparation method thereof |
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2019
- 2019-11-13 CN CN201911106000.9A patent/CN110922914B/en active Active
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| CN1803868A (en) * | 2005-12-20 | 2006-07-19 | 南开大学 | Method for synthesizing soluble cross-linked polyvinyl alcohol dialdehyde |
| CN106495609A (en) * | 2016-11-02 | 2017-03-15 | 常州市鼎升环保科技有限公司 | A kind of preparation method of high bond strength concrete interface treating agent |
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