CN115011403A

CN115011403A - Water-based degradable wood template concrete release agent and preparation method thereof

Info

Publication number: CN115011403A
Application number: CN202210575666.4A
Authority: CN
Inventors: 王海燕; 钟庆辉
Original assignee: Huizhou Qilin Environmental Protection Materials Co ltd
Current assignee: Huizhou Qilin Environmental Protection Materials Co ltd
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2022-09-06

Abstract

The invention discloses a water-based degradable wood template concrete release agent and a preparation method thereof, belonging to the technical field of concrete production technology and comprising the following steps: 15-30 parts of vegetable oil; 2-3 parts of cocamidopropyl betaine; 4-7 parts of oleic acid; 8-12 parts of 33% sodium hydroxide solution and 48-71 parts of deionized water. The invention relates to a water-based degradable wood template concrete release agent and a preparation method thereof, which solve the technical problems of high oil content and easy environmental pollution of the release agent in the prior art.

Description

Water-based degradable wood template concrete release agent and preparation method thereof

Technical Field

The invention relates to the technical field of concrete production technology, in particular to a water-based degradable wood template concrete release agent and a preparation method thereof.

Background

With the rapid development of the concrete industry technology, the role of concrete admixture in the concrete construction technology is becoming more and more important. Although the mixing amount of the concrete admixture is small, the concrete admixture can improve the performance of concrete, so that the concrete admixture can meet the increasingly severe actual requirements; meanwhile, the additive can also save the using amount of cement, thereby reducing the energy consumption of the construction industry, reducing the pollutant discharge and the like. Common additives on the market at present are: early strength agent, water reducing agent, air entraining agent, retarder, mold release agent and the like. The concrete release agent is also commonly called as a concrete release agent or a release lubricant, and is coated or sprayed on the inner wall of the template, so that a layer of isolating film can be generated to play roles of lubrication and isolation; meanwhile, the release agent can also effectively reduce the adhesive force between the concrete and the template, so that the concrete can be smoothly separated from the template when the template is removed, and the intact substance of the concrete shape is kept.

At present, the types of concrete release agents on the market are various, and the release effects of different types of release agents on concrete and templates are different. The following are common: soap type release agents, waste machine oils, vegetable oils and paraffin type release agents. Although the soap release agent has the advantage of low cost, the soap release agent emits unpleasant odor after fermentation, easily pollutes the environment, and is not easy to release products, thereby causing the defect of rough surface of concrete. Although the used oil releasing agent has the advantage of low cost, the oil stain easily pollutes the clothes of construction personnel; and after the product is demoulded, the surface of the concrete usually has the defect of roughness and is often accompanied by black oil stains, so that the demoulding difficulty of the product is increased. Although the vegetable oil release agent has the advantage of easily available raw materials, the release agent uses a large amount of vegetable oil, so that the cement solidification effect is directly influenced, and the defect of rough surface of concrete is easily caused. Although wax oil type release agents have the advantage of easy demoulding, the release agents need to be emulsified by an emulsifier, and common emulsifiers contain organic volatile organic solvents such as formaldehyde and the like, so the release agents are harmful to human bodies and have higher production cost.

In particular, chinese patent CN108219910A discloses a mold release agent used in concrete.

The release agent comprises the following components: water, waste engine oil, epoxy resin, condensate of isomeric alcohol and epoxy ethane, polyglycol ether, alkylphenol ethoxylate, triethanolamine and polypropylene in certain weight proportion

70-80%, 15-25% of treated waste engine oil, 2-3% of epoxy resin, 0.3-0.7% of isomeric alcohol and ethylene oxide condensate, 0.5-0.9% of polyethylene glycol ether, 0.5-1.2% of alkylphenol polyoxyethylene, 0.1-0.2% of triethanolamine and 0.1-0.2% of polypropylene. The waste engine oil can be recycled through the release agent, so that the waste of energy is reduced.

However, although the release agent disclosed above can save energy to a certain extent, it essentially adopts a method of using waste engine oil in combination with a compound emulsifier, and because the oil content is high, the oil film generated in the use process of the release agent is thicker; further causing the phenomena of honeycomb bubbles, yellowing and discoloration of impregnated marks and the like of concrete products. Further, in practical applications, the release agent is prone to dripping during the process of brushing the mold, thereby causing pollution or waste. Meanwhile, the concrete using the release agent has the phenomenon of residual waste engine oil after demoulding; thereby influencing the secondary construction of the concrete member; for example, the above conditions may affect the adhesion of tile or wall paint in a tiling process or a wall painting process.

Disclosure of Invention

Therefore, in order to solve the technical problems of high oil content, easy environmental pollution and the like of the release agent in the prior art, the water-based degradable wood formwork concrete release agent and the preparation method thereof need to be provided.

The water-based degradable wood template concrete release agent comprises the following components in parts by weight: 15-30 parts of vegetable oil; 2-3 parts of cocamidopropyl betaine; 4-7 parts of oleic acid; 8-12 parts of 33% sodium hydroxide solution and 48-71 parts of deionized water.

Further, the paint comprises the following components in parts by weight: 17-28 parts of vegetable oil; 2.2-2.8 parts of cocamidopropyl betaine; 4.3-6.7 parts of oleic acid; 8.5 to 11.5 portions of 33 percent sodium hydroxide solution and 51 to 68 portions of deionized water.

Specifically, in one embodiment, the paint comprises the following components in parts by weight: 25 parts of vegetable oil; 2.5 parts of cocamidopropyl betaine; 6 parts of oleic acid; 10.5 parts of 33% sodium hydroxide solution and 56 parts of deionized water.

Specifically, in one embodiment, the paint comprises the following components in parts by weight: the paint comprises the following components in parts by weight: silicone-vegetable oil polymer: 3 parts of a mixture; 30 parts of vegetable oil; 2.8 parts of cocamidopropyl betaine; 6.5 parts of oleic acid; 11.2 portions of 33 percent sodium hydroxide solution; 46.5 parts of deionized water.

Further, a method for preparing the water-based degradable wood template concrete release agent comprises the following steps:

s1: firstly, respectively weighing 2-3 parts of cocamidopropyl betaine, 4-7 parts of oleic acid and 8-12 parts of 33% sodium hydroxide solution;

s2: then, respectively adding the prepared cocamidopropyl betaine, oleic acid and 33% sodium hydroxide solution into 15-30 parts of vegetable oil;

s3: then, stirring the mixed liquid for 10-20 min;

s4: and then adding 48-71 parts of deionized water while stirring, and continuously stirring for 25-35min to obtain a finished product.

Further, in the step S2, 15 to 30 parts of the vegetable oil may be previously added with a predetermined amount of silicone-vegetable oil polymer; the mass ratio of the organic silicon-vegetable oil polymer to the vegetable oil is as follows: 1: 20; the silicone-vegetable oil polymer can be dispersed into the vegetable oil by stirring, and then the prepared cocamidopropyl betaine, oleic acid and 33% sodium hydroxide solution are respectively added into the mixed solution of the vegetable oil and the silicone-vegetable oil polymer.

Further, the preparation method of the organic silicon-vegetable oil comprises the following steps:

s11: dropwise adding a preset amount of 30% hydrogen peroxide into a mixed system of 20g of vegetable oil, acetic acid and 732 strong acid cation resin catalyst at 60 ℃, and controlling dropwise adding for 2 h; after the dropwise addition is finished, the reaction is carried out for 4 hours under the condition of heat preservation; then separating and filtering 732 strong acid cation resin catalyst to obtain crude product of epoxy vegetable oil;

s12: dropwise adding acetic acid with a preset amount into 10g of epoxy vegetable oil at 50 ℃, and controlling the dropwise adding time for 1 h; after the dropwise addition is finished, the reaction is carried out for 2 hours to obtain a crude product of the vegetable oil alcohol;

s13: dissolving succinyl chloride in dichloromethane, and performing ice-water bath; then, dropwise adding organic silicon sodium salt dissolved in dichloromethane in nitrogen atmosphere, controlling the dropwise adding within 1h, wherein the mass ratio of succinyl chloride to organic silicon sodium salt is 1: 1; after the dropwise addition, reacting in an ice-water bath for 3 hours, and then, continuously reacting at room temperature for 3 hours; after the reaction is finished, quickly adding a preset amount of triethylamine; continuously dropwise adding vegetable oleyl alcohol dissolved in dichloromethane in an ice water bath and a nitrogen atmosphere, wherein the amount ratio of the vegetable oleyl alcohol to the organic silicon sodium salt is 3: 1; the reaction is maintained in an ice water bath for 3 hours, and then the reaction is carried out for 3 hours again at room temperature, so as to obtain the crude product of the organic silicon-vegetable oil polymer.

Further, in step S11, the mass ratio of the vegetable oil, the acetic acid and the 732 strong acid cation resin catalyst is: 74.5:24.5: 1; the molar ratio of the 30% hydrogen peroxide to acetic acid added dropwise in the subsequent steps was 1.2: 1.

Further, after the crude epoxy vegetable oil product is obtained in step S11, it is washed with water, then extracted with ethyl ether, and then washed with saturated saline until it is neutral by pH paper; then, it was dried with anhydrous sodium sulfate and left overnight, and then the solvent was removed by distillation under reduced pressure, and finally, it was dried in a vacuum environment to obtain a refined epoxidized vegetable oil.

Further, after the crude silicone-vegetable oil polymer product is obtained in the step S13, the crude silicone-vegetable oil polymer product is filtered, and then washed to be neutral by using distilled water; then, dehydrating and drying the mixture by using anhydrous sodium sulfate; finally, the solvent is thoroughly pumped out by using an oil pump to obtain the refined organic silicon-vegetable oil polymer.

In conclusion, the water-based degradable wood template concrete release agent has the characteristic of low oil content, the surface of the concrete can be kept smooth and the generation of honeycomb bubbles can be reduced after the concrete is released from the mold by the release agent prepared by the invention, and the phenomena of residual impregnation marks and yellowing and discoloration of concrete products can not occur. Meanwhile, the water-based degradable wood template concrete release agent also has the characteristic of biodegradation, so that the pollution to the environment and the influence on the secondary construction of concrete members can be reduced. Therefore, the water-based degradable wood template concrete release agent and the preparation method thereof solve the technical problems of high oil content and easy environmental pollution of the release agent in the prior art.

Drawings

FIG. 1 is a process flow diagram of a preparation method of the water-based degradable wood template concrete release agent.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The invention relates to a water-based degradable wood template concrete release agent which comprises the following components in parts by weight:

15-30 parts of vegetable oil;

2-3 parts of cocamidopropyl betaine;

4-7 parts of oleic acid;

8-12 parts of 33% sodium hydroxide solution;

48-71 parts of deionized water.

Specifically, in the formula of the water-based degradable wood formwork concrete release agent, the vegetable oil can be one of rapeseed oil or soybean oil. The vegetable oil specifically functions as a substance that provides a specific film forming for the mold release system. Compared with the conventional common mineral oil formula, such as lubricating oil, mechanical oil or waste engine oil, the vegetable oil formula is blended with a preset amount of surfactant, so that an oil film generated by a finished release agent product can be thinned, oil diffusion is facilitated, pores on the surface of concrete can be reduced to a greater extent, and color difference is further reduced. Meanwhile, the vegetable oil is formulated to ensure that the release agent keeps good weather resistance and flushing resistance. However, if the surfactant is used in an excessive amount, defects such as color defects and stains may occur in the concrete product. The cocamidopropyl betaine is used as an amphoteric surfactant and has emulsification and thickening stabilization effects; the oleic acid and the 33% sodium hydroxide solution can react to provide saponification, adhesion and lubricating film-forming substances for the system. Specifically, the water-based degradable wood template concrete release agent disclosed by the invention takes vegetable oil, cocamidopropyl betaine, oleic acid and sodium hydroxide saponificate as main film forming substances of the release agent, so that the release agent has the characteristics of strong adhesive force, good release effect, scouring resistance, temperature resistance, biodegradability and the like.

Specifically, 5 detailed examples of the water-based degradable wood template concrete release agent disclosed by the invention are as follows:

release agent example 1:

15 parts of vegetable oil;

2 parts of cocamidopropyl betaine;

4 parts of oleic acid;

8 parts of 33% sodium hydroxide solution;

71 parts of deionized water.

Release agent example 2:

30 parts of vegetable oil;

3 parts of cocamidopropyl betaine;

7 parts of oleic acid;

12 parts of 33% sodium hydroxide solution;

48 parts of deionized water.

Release agent example 3:

25 parts of vegetable oil;

2.5 parts of cocamidopropyl betaine;

6 parts of oleic acid;

10.5 portions of 33 percent sodium hydroxide solution;

56 parts of deionized water.

Release agent example 4:

20 parts of vegetable oil;

2.2 parts of cocamidopropyl betaine;

4.8 parts of oleic acid;

8 parts of 33% sodium hydroxide solution;

65 parts of deionized water.

Release agent example 5:

28 parts of vegetable oil;

2.8 parts of cocamidopropyl betaine;

6.5 parts of oleic acid;

11.2 parts of 33 percent sodium hydroxide solution;

51.5 parts of deionized water.

Further, referring to fig. 1, fig. 1 is a process flow diagram of a preparation method of the water-based degradable wood formwork concrete release agent of the present invention. As shown in figure 1, the preparation method of the water-based degradable wood template concrete release agent comprises the following steps:

s2: then, adding the prepared cocamidopropyl betaine, oleic acid and 33% sodium hydroxide solution into 15-30 parts of vegetable oil respectively;

s3: then, stirring the mixed liquid for 10-20 min;

Specifically, based on the preparation method of the aqueous degradable wood template concrete release agent, 3 detailed examples are as follows:

preparation method example 1:

firstly, respectively weighing 2 parts of cocamidopropyl betaine, 4 parts of oleic acid and 8 parts of 33% sodium hydroxide solution; adding the materials into 15 parts of vegetable oil respectively; then, stirring the mixed solution for 10 min; and then adding 71 parts of deionized water while stirring, and stirring for 25min to obtain a finished product.

Preparation method example 2:

firstly, respectively weighing 3 parts of cocamidopropyl betaine, 7 parts of oleic acid and 12 parts of 33% sodium hydroxide solution; adding the materials into 30 parts of vegetable oil respectively; then, stirring the mixed solution for 10 min; and then adding 48 parts of deionized water while stirring, and stirring for 25min to obtain a finished product.

Preparation method example 3:

firstly, respectively weighing 2.8 parts of cocamidopropyl betaine, 6.5 parts of oleic acid and 11.2 parts of 33% sodium hydroxide solution; adding the materials into 28 parts of vegetable oil respectively; then, stirring the mixed solution for 10 min; and then, adding 51.5 parts of deionized water while stirring, and stirring for 25min to obtain a finished product.

Further, the demolding performance of the water-based degradable wood template concrete demolding agent is continuously tested. The concrete description is as follows:

comparative example 1: commercially available aqueous concrete release agents.

Comparative example 2: based on example 5, but with respect to the formulation of example 5, no cocamidopropyl betaine was incorporated in this comparative example, the other components and the preparation process remained unchanged.

Comparative example 3: based on example 5, but with respect to the formulation of example 5, oleic acid was not incorporated in this comparative example, and the other constituents and the preparation process remained unchanged.

The release agents of examples 3 to 5 and comparative examples 1 to 3 were subjected to a release test for C30 general concrete according to the test method described in Release agent for concrete articles (JC/T949-2005), and the detailed test results are shown in the following tables.

Table 1: results of mold release Performance test

Based on the performance test results of the release agent in the table 1, the release agent product prepared by the formula recorded by the water-based degradable wood template concrete release agent and the preparation method has the release performance obviously superior to that of the water-based concrete release agent sold in the market; moreover, the stability of the release agent and the quality of concrete can be obviously improved by the preset amount of the cocamidopropyl betaine and the oleic acid.

Further, the vegetable oil-based release agent is an environment-friendly release agent, which has the advantages of being renewable, biodegradable and harmless to human bodies, and most importantly, the surface quality of concrete can be improved by using the vegetable oil-based release agent. However, the vegetable oil-based release agents have drawbacks if applied to high quality engineering. In particular, it results in the disadvantages of easy dusting of the mould and a slightly greater concrete adhesion. In order to improve the stripping performance of the concrete product during demoulding and reduce dust, the demoulding agent can be prepared by modifying vegetable oil with organic silicon, so that the performance of the demoulding agent is improved. The organic silicon has excellent demolding performance due to the characteristics of chemical inertia, lubricity, low surface energy and strong film forming capability, and is suitable for being applied to demolding agents.

Specifically, the preparation method of the organic silicon modified vegetable oil comprises the following steps:

s11: dropwise adding a preset amount of 30% hydrogen peroxide into a mixed system of 20g of vegetable oil, acetic acid and 732 strong acid cation resin catalyst at 60 ℃, and controlling dropwise adding for 2 h; after the dropwise addition is finished, keeping the temperature and reacting for 4 hours; then separating and filtering 732 strong acid cation resin catalyst to obtain crude epoxy vegetable oil product;

Further, in the step S11, the vegetable oil, the acetic acid, and the 732 strongly acidic cationic resin catalyst are in a mass ratio of: 74.5:24.5:1. Further, the molar ratio of the 30% hydrogen peroxide to acetic acid added dropwise in the subsequent step was 1.2: 1. After the crude epoxy vegetable oil product obtained in step S11 is washed with water, it is extracted with diethyl ether, and then washed with saturated saline until it becomes neutral by pH paper. Then, it was dried with anhydrous sodium sulfate and left overnight, and then the solvent was removed by distillation under reduced pressure, and finally, it was dried in a vacuum environment to obtain a refined epoxidized vegetable oil.

Further, in the step S12, the mass ratio of the epoxidized vegetable oil to the acetic acid is 3: 1. Specifically, after the crude product of the vegetable oleyl alcohol is prepared in step S12, it may be further purified by the following method: washing the mixture with distilled water, and then extracting the mixture with diethyl ether; then, the mixture was washed with saturated saline until the pH was neutral as measured with a pH test paper. Then, it was dried overnight using anhydrous sodium sulfate, and then the solvent was removed by distillation under reduced pressure; finally, it is dried in a vacuum environment to obtain refined vegetable oil alcohol.

Further, in the above step S13, the crude silicone-vegetable oil polymer product may be further purified after being obtained; the method specifically comprises the following steps: filtering the crude product of the organic silicon-vegetable oil polymer, and then washing the crude product of the organic silicon-vegetable oil polymer to be neutral by using distilled water; then, dehydrating and drying the mixture by using anhydrous sodium sulfate; and finally, completely pumping out the solvent by using an oil pump to obtain the refined organic silicon-vegetable oil polymer.

The above is the whole process of the synthesis of the organosilicon-vegetable oil polymer. Since the main component of vegetable oils is triglycerides, which contain unsaturated fatty acids, i.e. a certain amount of double bonds is present. The preparation method of the water-based degradable wood template concrete release agent utilizes the chemical characteristics of double bonds of the water-based degradable wood template concrete release agent, firstly, the double bonds are epoxidized by peracetic acid, and then, the epoxy bonds are opened by acetic acid, so that the vegetable oil alcohol is obtained. Under certain conditions, the organosilicon sodium salt can be grafted into the vegetable oil alcohol through succinyl chloride, and then the organosilicon-vegetable oil polymer is prepared.

Further, in the aforementioned step S2, a preset amount of the silicone-vegetable oil polymer may be previously added to the 15-30 parts of vegetable oil; the mass ratio of the organic silicon-vegetable oil polymer to the vegetable oil is as follows: 1:20. The organic silicon-vegetable oil polymer can be dispersed into the basic vegetable oil by stirring, and then the prepared cocamidopropyl betaine, oleic acid and 33% sodium hydroxide solution are respectively added into the mixed solution of the vegetable oil and the organic silicon-vegetable oil polymer; then, stirring the mixed liquid for 10-20 min; and then adding 48-71 parts of deionized water while stirring, and continuously stirring for 25-35min to obtain the finished product of the organic silicon modified vegetable oil release agent.

Then, according to the requirements of JC/T949-2005 release agent for concrete products, the homogeneity of the organic silicon modified vegetable oil release agent such as density, viscosity, pH value, stability and the like, and the construction performance such as drying film forming time, release performance, rusting effect on steel dies and the like are measured. The organic silicon modified vegetable oil release agent for determination is as follows: silicone-vegetable oil polymer: 3 parts of a mixture; 30 parts of vegetable oil; 2.8 parts of cocamidopropyl betaine; 6.5 parts of oleic acid; 11.2 portions of 33 percent sodium hydroxide solution; 46.5 parts of deionized water.

Table 2: various performance indexes of organic silicon modified vegetable oil release agent

As can be seen from Table 2, the film forming time of the organic silicon modified vegetable oil release agent is 20min, the pH value is 6.5, and the organic silicon modified vegetable oil release agent has no corrosion effect on the mold; when demoulding, the adsorption force between the mould and the concrete test piece is very small, the side surface of the mould is automatically stripped when the mould is removed, and the demoulding can be carried out by slightly exerting force on the bottom surface; after demoulding, the concrete test block has smooth surface, uniform color and complete and undamaged edges and corners. And when the ratio of the organic silicon-vegetable oil polymer to the vegetable oil is 1:20, the concrete adhesion amount of the bottom surface of the mould is 3.75g/m ² Is obviously superior to the vegetable oil release agent without adding the organic silicon-vegetable oil polymer, and the concrete adhesion amount of the concrete is actually measured to be 4.70g/m by the aforesaid release agent example 5 ² Therefore, the introduction of the organic silicon can actually reduce the adhesion of the concrete, thereby reducing the dust adhesion of the mould, improving the demoulding performance of the concrete and further meeting the high-quality use requirement of the concrete industry on the demoulding agent.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The water-based degradable wood template concrete release agent is characterized by comprising the following components in parts by weight: 15-30 parts of vegetable oil; 2-3 parts of cocamidopropyl betaine; 4-7 parts of oleic acid; 8-12 parts of 33% sodium hydroxide solution and 48-71 parts of deionized water.

2. The aqueous degradable wood formwork concrete release agent of claim 1, wherein: the paint comprises the following components in parts by weight: 17-28 parts of vegetable oil; 2.2-2.8 parts of cocamidopropyl betaine; 4.3-6.7 parts of oleic acid; 8.5 to 11.5 portions of 33 percent sodium hydroxide solution and 51 to 68 portions of deionized water.

3. The aqueous degradable wood formwork concrete release agent of claim 2, wherein: the paint comprises the following components in parts by weight: 25 parts of vegetable oil; 2.5 parts of cocamidopropyl betaine; 6 parts of oleic acid; 10.5 parts of 33% sodium hydroxide solution and 56 parts of deionized water.

4. The aqueous degradable wood formwork concrete release agent of claim 1, wherein: the paint comprises the following components in parts by weight: silicone-vegetable oil polymer: 3 parts of a mixture; 30 parts of vegetable oil; 2.8 parts of cocamidopropyl betaine; 6.5 parts of oleic acid; 11.2 parts of 33 percent sodium hydroxide solution; 46.5 parts of deionized water.

5. A method of preparing an aqueous degradable wood formwork concrete release agent as defined in any one of claims 1-3, comprising the steps of:

s3: then, stirring the mixed liquid for 10-20 min;

6. The preparation method of the aqueous degradable wood formwork concrete release agent according to claim 5, characterized in that: in the step S2, 15 to 30 parts of the vegetable oil may be previously added with a preset amount of silicone-vegetable oil polymer; the mass ratio of the organic silicon-vegetable oil polymer to the vegetable oil is as follows: 1: 20; the silicone-vegetable oil polymer can be dispersed into the vegetable oil by stirring, and then the prepared cocamidopropyl betaine, oleic acid and 33% sodium hydroxide solution are respectively added into the mixed solution of the vegetable oil and the silicone-vegetable oil polymer.

7. The preparation method of the aqueous degradable wood formwork concrete release agent according to claim 6, characterized in that: the preparation method of the organic silicon-vegetable oil comprises the following steps:

s11: dropwise adding a preset amount of 30% hydrogen peroxide into a mixed system of 20g of vegetable oil, acetic acid and 732 strong acid cation resin catalyst at 60 ℃, and controlling dropwise adding for 2 hours; after the dropwise addition is finished, the reaction is carried out for 4 hours under the condition of heat preservation; then separating and filtering 732 strong acid cation resin catalyst to obtain crude epoxy vegetable oil product;

s12: dropwise adding acetic acid with a preset amount into 10g of epoxy vegetable oil at 50 ℃, and controlling the dropwise adding time for 1 h; after the dropwise addition is finished, preserving heat and reacting for 2 hours to obtain a crude vegetable oil alcohol product;

8. The preparation method of the aqueous degradable wood formwork concrete release agent according to claim 7, characterized in that: in step S11, the mass ratio of the vegetable oil, the acetic acid and the 732 strong acid cation resin catalyst is: 74.5:24.5: 1; the molar ratio of the 30% hydrogen peroxide to acetic acid added dropwise in the subsequent steps was 1.2: 1.

9. The preparation method of the aqueous degradable wood template concrete release agent according to claim 8, characterized in that: after the crude epoxy vegetable oil product is obtained in step S11, washing the crude epoxy vegetable oil product with water, then extracting the crude epoxy vegetable oil product with diethyl ether, and then washing the crude epoxy vegetable oil product with saturated salt solution until the crude epoxy vegetable oil product is detected by a pH test paper and washed to be neutral; then, it was dried with anhydrous sodium sulfate and left overnight, and then the solvent was removed by distillation under reduced pressure, and finally, it was dried in a vacuum environment to obtain a refined epoxidized vegetable oil.

10. The preparation method of the aqueous degradable wood formwork concrete release agent according to claim 9, characterized in that: after the crude silicone-vegetable oil polymer product is obtained in step S13, the crude silicone-vegetable oil polymer product is filtered and then washed to neutrality with distilled water; then, dehydrating and drying the mixture by using anhydrous sodium sulfate; finally, the solvent is thoroughly pumped out by using an oil pump to obtain the refined organic silicon-vegetable oil polymer.