CN112500911A - Efficient reinforced concrete water-based release agent and preparation method thereof - Google Patents
Efficient reinforced concrete water-based release agent and preparation method thereof Download PDFInfo
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- CN112500911A CN112500911A CN202011459635.XA CN202011459635A CN112500911A CN 112500911 A CN112500911 A CN 112500911A CN 202011459635 A CN202011459635 A CN 202011459635A CN 112500911 A CN112500911 A CN 112500911A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 37
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims abstract description 12
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 11
- 239000002904 solvent Substances 0.000 claims abstract description 6
- 239000000080 wetting agent Substances 0.000 claims abstract description 6
- 239000003112 inhibitor Substances 0.000 claims abstract description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003755 preservative agent Substances 0.000 claims abstract description 5
- 230000002335 preservative effect Effects 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000005187 foaming Methods 0.000 claims abstract 2
- 238000003756 stirring Methods 0.000 claims description 30
- 239000003921 oil Substances 0.000 claims description 14
- 235000019198 oils Nutrition 0.000 claims description 12
- 239000006082 mold release agent Substances 0.000 claims description 10
- -1 carboxylic acid compounds Chemical class 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 5
- 229920000570 polyether Polymers 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 4
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 3
- 239000008118 PEG 6000 Substances 0.000 claims description 3
- 235000019482 Palm oil Nutrition 0.000 claims description 3
- 229920002584 Polyethylene Glycol 6000 Polymers 0.000 claims description 3
- 229920002594 Polyethylene Glycol 8000 Polymers 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 3
- MGIYRDNGCNKGJU-UHFFFAOYSA-N isothiazolinone Chemical compound O=C1C=CSN1 MGIYRDNGCNKGJU-UHFFFAOYSA-N 0.000 claims description 3
- 239000002540 palm oil Substances 0.000 claims description 3
- 229920002565 Polyethylene Glycol 400 Polymers 0.000 claims description 2
- 229920002582 Polyethylene Glycol 600 Polymers 0.000 claims description 2
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 2
- 239000002480 mineral oil Substances 0.000 claims description 2
- 235000010446 mineral oil Nutrition 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims description 2
- 229920000053 polysorbate 80 Polymers 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 1
- 150000003376 silicon Chemical class 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 239000004567 concrete Substances 0.000 abstract description 19
- 238000002156 mixing Methods 0.000 abstract description 5
- 239000000839 emulsion Substances 0.000 abstract description 4
- 238000000227 grinding Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract 2
- 230000007797 corrosion Effects 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002523 polyethylene Glycol 1000 Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 229940051841 polyoxyethylene ether Drugs 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/08—Inorganic acids or salts thereof
- C10M2201/082—Inorganic acids or salts thereof containing nitrogen
- C10M2201/083—Inorganic acids or salts thereof containing nitrogen nitrites
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
- C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
The invention discloses a high-efficiency reinforced concrete water-based release agent and a preparation method thereof, wherein the high-efficiency reinforced concrete water-based release agent is prepared by mixing the following raw materials in parts by weight: 25-60% of oily substance, 4-15% of emulsifier, 1-3% of solubilizer, 0.1-5% of low-foaming base material wetting agent, 1-5% of film-forming substance, 0.1-3% of defoaming agent, 0.1-3% of rust inhibitor, 0.1-3% of preservative and the balance of water. The invention can realize the purposes of no corrosion of the release agent to the grinding tool, natural demoulding, uniform film forming and environmental protection, has short film forming time, solves the problems of easy pollution of the existing release agent to the concrete surface, long film forming time, easy corrosion of the water-soluble release agent to the grinding tool and easy putrefaction of emulsion, ensures that the surface of a formed member is smooth and has no air bubbles, and the concrete adhesive amount of the mould is small, thereby being the concrete release agent with good demoulding quality.
Description
Technical Field
The invention belongs to the technical field of concrete, and particularly relates to a high-efficiency reinforced concrete water-based release agent and a preparation method thereof.
Background
The concrete release agent is a functional substance between a mould and a finished product, and an essential auxiliary agent is required to be used for demoulding, improving the production efficiency, prolonging the service life of the mould, simultaneously enabling the product to be smooth and qualified in size and reducing waste products when a model product is manufactured. With the continuous improvement of the technological level of the building industry, the concrete release agent has high requirements on the working performance and the mechanical property of concrete and the surface of the concrete, and the problem is solved to a great extent.
At present, commercial concrete release agents at home and abroad are various in types, and different types of concrete have different release effects on the concrete and a template. The mold release agent disclosed by the application is a non-corrosive mold, natural demolding is realized, the film forming is uniform and environment-friendly, the film forming time is short, the problems that the existing mold release agent easily pollutes the surface of concrete, the film forming time is long, the water-soluble mold release agent is easy to corrode the mold release agent, the emulsion is easy to decay, the surface of a molding member is smooth and has no bubbles, and the adhesion amount of the mold concrete is small are solved by adding an oily substance, water, a low-foam base material wetting agent, a film forming agent, an oily emulsifier, a water-based emulsifier, a solubilizer.
Disclosure of Invention
The invention aims to provide an efficient reinforced concrete water-based release agent and a preparation method thereof.
The technical problems to be solved by the invention are as follows:
at present, commercial concrete release agents at home and abroad are various in variety, different types of concrete have different demolding effects on the concrete and a template, and many release agents in the prior art are uneven in molding and long in film forming time when used, bubbles are easily formed on the surface of a molded member, and even when used, emulsion is easy to rot and can corrode a mold.
The purpose of the invention can be realized by the following technical scheme:
the efficient reinforced concrete water-based release agent comprises the following components in percentage by mass:
as a further scheme of the invention, the preparation method of the high-efficiency reinforced concrete water-based release agent comprises the following specific steps:
1) weighing the raw material components according to the mass percentage;
2) adding the film forming substance into water, heating to 45-65 ℃, stirring for dissolving, cooling to room temperature, adding the oily emulsifier, the solubilizer and the low-foam base material wetting agent, and stirring at 1500r/min for 10-30 min to obtain a solution A;
3) stirring the oils in the proportion for 5-10 min under the condition of 2000r/min, then adding a water-based emulsifier and a defoaming agent, and keeping the rotating speed to continue stirring for 10-20 min to obtain a solution B;
4) and slowly adding the solution A into the solution B for 10-15 min, then continuously adding the rust inhibitor and the preservative, and continuously stirring for 10-30 min under the condition of 2000r/min to obtain the high-efficiency reinforced concrete water-based release agent.
As a further scheme of the invention, the kinematic viscosity of the oil at 40 ℃ is 3-26 mm2Oils per second.
In a further embodiment of the present invention, the oil is one or more of palm oil, mineral oil and emulsified oil mixed in any proportion.
As a further scheme of the invention, the oily emulsifier is at least one of S-40, S-60 and S-80, and the aqueous emulsifier is at least one of TO-3, AES, OP-10, OP-7, OP-9, PEG-400, PEG-600 and Tween 80.
As a further embodiment of the invention, the solubilizer is at least one of CO40 and S-15.
As a further scheme of the invention, the low-foam substrate wetting agent is alkylphenol polyoxyethylene ether or polyether modified siloxane.
As a further scheme of the invention, the film forming substance is at least one of PEG6000, PEG8000 and PEG 10000.
In a further aspect of the present invention, the defoaming agent is one or a combination of more of polyether modified silicon defoaming agents, silicone defoaming agents and higher alcohol defoaming agents in any proportion.
As a further scheme of the invention, the rust inhibitor is one of nitrite, carboxylic acid compounds, alkanolamine compounds and diamine compounds; the preservative is one of KS-350, DL-101 and isothiazolinone.
The invention has the beneficial effects that:
1. compared with the prior patent, the performance of the high-efficiency reinforced concrete water-based release agent disclosed by the invention can further improve the effect of the release agent; the technical effect of the existing release agent is ensured, in addition, the raw material of the film forming substance is a water-soluble polymer film forming substance, the film forming substance has lubricity and no corrosiveness, colorless and transparent liquid is formed, and the polymer particles can finally have a continuous transparent film with certain strength along with the steam pressure of water, so that the using effect of the release agent is efficiently enhanced.
2. The high-efficiency reinforced concrete water-based release agent solves the problems that the existing release agent easily pollutes the surface of concrete, the film forming time is long, the water-soluble release agent is easily rusted by a grinding tool and the emulsion is easily rotten, the surface of a formed member is smooth and has no air bubbles, the adhesion amount of the concrete of the mould is small, and the concrete release agent is good in release quality.
3. The preparation method of the high-efficiency reinforced concrete water-based release agent has the advantages of simple process, low requirements on industrial automatic production equipment and conditions, low energy consumption during production, capability of changing the components and proportion of oily substances according to seasons and construction requirements, production efficiency improvement, economy and environmental protection.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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
Adding 2 parts by mass of PEG-1000 into 50 parts by mass of water, heating to 45-65 ℃, stirring and dissolving at the rotation speed of 1500r/min, cooling to room temperature, adding 5 parts by mass of S-60, 3 parts by mass of CO40 and 3 parts by mass of alkylphenol ethoxylates, and stirring for 20min to obtain a solution A; stirring 50 parts of palm oil for 7min under 2000r/min, uniformly mixing, then adding 7 parts of TO-3 and 0.5 part of high-carbon alcohol defoaming agent, and continuously stirring for 15min TO obtain a solution B; and (3) slowly adding the solution A into the solution B for 10min, continuously adding 2 parts of nitrite and 1.5 parts of KS-350, and continuously stirring for 20min to obtain the high-efficiency reinforced concrete water-based release agent.
Example 2
Adding 3 parts by mass of PEG8000 into 55 parts by mass of water, heating to 55 ℃, stirring for dissolving, cooling to room temperature, adding 4.8 parts by mass of S-80, 2 parts by mass of S-15 and 2 parts by mass of alkylphenol ethoxylates, and stirring for 20min to obtain solution A; stirring 45 parts of No. 10 white oil for 8min at 2000r/min, uniformly mixing, then adding 7.2 parts of OP-10 and 1.4 parts of organosilicon defoaming agent, and continuously stirring for 15min to obtain a solution B; and slowly adding the solution A into the solution B for 12min, continuously adding 1.6 parts of carboxylic acid compounds and 1.8 parts of isothiazolinone, and continuously stirring for 20min to obtain the high-efficiency reinforced concrete water-based release agent.
Example 3
Adding 2 parts by mass of PEG10000 into 70 parts by mass of water, heating to 45-65 ℃, stirring for dissolving, cooling to room temperature, adding 1.6 parts by mass of S-80, 2 parts by mass of CO40 and 0.5 part by mass of alkylphenol ethoxylates, and stirring for 25min to obtain a solution A; stirring 30 parts of emulsified oil for 7min under 2000r/min, uniformly mixing, then adding OP-102.4 parts and 0.5 part of high-carbon alcohol, and continuously stirring for 15min to obtain a solution B; and slowly adding the solution A into the solution B for 10min, continuously adding 0.5 part of alkanolamine compound and 0.5 part of DL-101, and continuously stirring for 25min to obtain the high-efficiency reinforced concrete water-based release agent.
Example 4
Adding 1.8 parts by mass of PEG6000 into 50 parts by mass of water, heating to 50 ℃, stirring for dissolving, cooling to room temperature, adding 3.2 parts by mass of S-60, 2.5 parts by mass of CO40 and 3 parts by mass of alkylphenol ethoxylates, and stirring for 25min to obtain solution A; stirring 50 parts of emulsified oil for 8min under the condition of 2000r/min, uniformly mixing, then adding 2.4 parts of OP-9 and 1 part of polyether modified silicon, and continuously stirring for 15min to obtain a solution B; and slowly adding the solution A into the solution B for 10min, continuously adding 0.7 part of carboxylic acid compound and 0.6 part of KS-350, and continuously stirring for 25min to obtain the high-efficiency reinforced concrete water-based release agent.
And (3) analyzing test results and data:
the foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (10)
1. The efficient reinforced concrete water-based release agent is characterized by comprising the following components in percentage by mass:
the balance being water.
2. The preparation method of the high-efficiency reinforced concrete water-based release agent as claimed in claim 1, characterized by comprising the following specific steps:
1) weighing the raw material components according to the mass percentage;
2) adding the film forming substance into water, heating to 45-65 ℃, stirring for dissolving, cooling to room temperature, adding the oily emulsifier, the solubilizer and the low-foam base material wetting agent, and stirring at 1500r/min for 10-30 min to obtain a solution A;
3) stirring the oils in the proportion for 5-10 min under the condition of 2000r/min, then adding a water-based emulsifier and a defoaming agent, and keeping the rotating speed to continue stirring for 10-20 min to obtain a solution B;
4) and slowly adding the solution A into the solution B for 10-15 min, then continuously adding the rust inhibitor and the preservative, and continuously stirring for 10-30 min under the condition of 2000r/min to obtain the high-efficiency reinforced concrete water-based release agent.
3. The efficient reinforced concrete water-based release agent as claimed in claim 2, wherein the kinematic viscosity of the oil at 40 ℃ is 3-26 mm2Oils per second.
4. The efficient reinforced concrete water-based mold release agent as claimed in claim 3, wherein the oil is one or more of palm oil, mineral oil and emulsified oil mixed in any proportion.
5. The high-efficiency reinforced concrete water-based mold release agent as claimed in claim 2, wherein the oil-based emulsifier is at least one of S-40, S-60 and S-80, and the water-based emulsifier is at least one of TO-3, AES, OP-10, OP-7, OP-9, PEG-400, PEG-600 and Tween 80.
6. The efficient reinforced concrete water-based mold release agent as claimed in claim 2, wherein the solubilizer is at least one of CO40 and S-15.
7. The high-efficiency reinforced concrete water-based mold release agent as claimed in claim 2, wherein the low-foaming substrate wetting agent is alkylphenol ethoxylates or polyether modified siloxane.
8. The efficient reinforced concrete water-based mold release agent as claimed in claim 2, wherein the film forming substance is at least one of PEG6000, PEG8000 and PEG 10000.
9. The efficient reinforced concrete water-based release agent as claimed in claim 2, wherein the defoaming agent is one or more of polyether modified silicon defoaming agent, organic silicon defoaming agent and higher alcohol defoaming agent in any proportion.
10. The high-efficiency reinforced concrete water-based mold release agent as claimed in claim 2, wherein the rust inhibitor is one of nitrite, carboxylic acid compounds, alkanolamine compounds and diamine compounds; the preservative is one of KS-350, DL-101 and isothiazolinone.
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| CN115247097A (en) * | 2022-07-27 | 2022-10-28 | 四川天宇油脂化学有限公司 | Concrete release agent based on glycerol extract and preparation method thereof |
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| CN113773898A (en) * | 2021-10-19 | 2021-12-10 | 绍兴职业技术学院 | Environment-friendly styrene butadiene polymer permeable concrete release agent and preparation method thereof |
| CN115247097A (en) * | 2022-07-27 | 2022-10-28 | 四川天宇油脂化学有限公司 | Concrete release agent based on glycerol extract and preparation method thereof |
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