Epoxy resin-based concrete anti-sticking agent as well as preparation method and application thereof

Abstract

The invention relates to the field of concrete processing and mechanical equipment, in particular to an epoxy resin-based concrete anti-sticking agent as well as a preparation method and application thereof. The preparation method of the epoxy resin-based concrete anti-sticking agent comprises the following steps: dissolving epoxy resin in a diluent to obtain an epoxy resin solution; adding inorganic nanoparticles and a silane coupling agent into the epoxy resin solution, and uniformly dispersing to obtain an epoxy resin base solution; dissolving a curing agent in a diluent to obtain a curing agent solution; and uniformly mixing the epoxy resin-based liquid with the curing agent solution to obtain the epoxy resin-based concrete anti-sticking agent. The preparation process is simple and easy to operate, wide in engineering raw material source and easy for large-scale production and engineering application. The hydrophobic property and the wear resistance of the surface of concrete mechanical equipment or a concrete prefabricated part can be improved by using the epoxy resin-based concrete anti-sticking agent disclosed by the invention.

Description

Technical Field

[0001] The present invention relates to the field of concrete processing and mechanical equipment, and in particular to an epoxy resin-based concrete anti-adhesive agent, a preparation method and application thereof. Background Art

[0002] Cement-based materials, represented by concrete, have become the world's most widely used building material due to their low cost and excellent mechanical properties. They are widely used in infrastructure construction, including construction projects, seaport projects, and bridge construction. With population growth and the continuous advancement of urbanization, the market for modern commercial concrete and precast concrete components is developing rapidly, placing higher demands on product performance and appearance quality.

[0003] In actual engineering applications, commercial concrete is centrally produced at large mixing plants and transported to various construction sites via concrete mixer trucks. During unloading, some concrete residue remains inside the concrete mixing system, delivery pumps, and concrete mixer trucks. If not cleaned promptly, this residue will gradually solidify inside the tank, reducing tank capacity, reducing material output and transport volume, and adversely affecting the performance of the concrete. Furthermore, the accumulated solidified material increases the weight of the mixing tank, increasing energy consumption and wear on internal components, shortening the service life of concrete machinery. During the production of precast concrete parts, the strong adhesion of concrete can make it difficult to release the precast part from the mold surface. This can easily lead to structural defects such as honeycombing, chipping, and pits on the concrete surface, negatively impacting the performance of the precast concrete parts in engineering applications. Currently, to improve the appearance quality of precast concrete parts, release agents are often used in engineering applications to provide insulation and lubrication, reducing adhesion at the mold-concrete interface to ensure smooth demolding and achieve the desired appearance. However, the main components of the commonly used release agents are mainly oil mixtures such as mineral oil, which need to be repeatedly applied before each construction. On the other hand, oil release agents will cause certain pollution to concrete materials and affect the surface quality of prefabricated parts. If directly used in commercial concrete production and transportation machinery and equipment, it will cause slurry pollution.

[0004] With the development of functional coatings, the development of a universal concrete anti-sticking agent that can be used for both anti-fouling and self-cleaning of concrete processing machinery and equipment and efficient demoulding of precast concrete parts is of great significance for improving the quality of modern commercial concrete and precast concrete components, saving construction costs, and improving economic benefits. Summary of the Invention

[0005] The present invention addresses the shortcomings of the prior art by providing an epoxy resin-based concrete anti-sticking agent, a preparation method, and applications thereof. The epoxy resin-based concrete anti-sticking agent prepared by the present invention can form a hydrophobic, wear-resistant organic coating on the inner walls of concrete processing equipment and precast molds, thereby improving the hydrophobicity of the equipment inner walls and reducing the interfacial bonding between the concrete and the equipment inner walls. This effectively reduces the amount of concrete residue remaining in the concrete processing equipment and facilitates the demolding of precast concrete parts after consolidation.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] One of the technical solutions of the present invention is a method for preparing an epoxy resin-based concrete anti-adhesive agent, comprising the following steps:

[0008] dissolving the epoxy resin in a diluent to obtain an epoxy resin solution;

[0009] adding inorganic nanoparticles and a silane coupling agent into the epoxy resin solution and dispersing them evenly to obtain an epoxy resin base liquid;

[0010] dissolving the curing agent in the diluent to obtain a curing agent solution;

[0011] The epoxy resin base liquid and the curing agent solution are mixed to obtain the epoxy resin-based concrete anti-adhesive agent.

[0012] In a preferred embodiment of the present invention, the epoxy resin is bisphenol A epoxy resin E-51 and / or bisphenol A epoxy resin E-44;

[0013] The diluent is at least one of benzyl glycidyl ether 692, ethyl acetate, polyethylene glycol, and dibutyl phthalate;

[0014] When preparing the epoxy resin solution, the mass ratio of the epoxy resin to the diluent is 100:(10-30).

[0015] In a preferred embodiment of the present invention, the inorganic nanoparticles are at least one of hydrophobic nano-silica, halloysite, sepiolite, and diatomaceous earth;

[0016] The silane coupling agent is at least one of hexadecyltrimethoxysilane, KH-550, and KH-560;

[0017] The addition amount of the inorganic nanoparticles is 1wt% to 3wt% of the mass of the epoxy resin;

[0018] The added amount of the silane coupling agent is 4 wt% to 8 wt% of the epoxy resin.

[0019] In a preferred embodiment of the present invention, the curing agent is at least one of triethylenetetramine, tetraethylenepentamine, polyamide 650, and polyamide 651;

[0020] When preparing the curing agent solution, the mass ratio of the curing agent to the diluent is (15-50):(10-20).

[0021] In a preferred embodiment of the present invention, the mass ratio of the curing agent to the epoxy resin is (15-50):100.

[0022] The second technical solution of the present invention is an epoxy resin-based concrete anti-adhesive agent prepared according to the above-mentioned preparation method.

[0023] The third technical solution of the present invention is the use of the above-mentioned epoxy resin-based concrete anti-sticking agent in mechanical equipment used in the preparation or transportation of commercial concrete and concrete prefabricated parts.

[0024] A fourth technical solution of the present invention is a method for improving the hydrophobicity and wear resistance of concrete machinery and equipment or concrete precast parts, which comprises spraying the above-mentioned epoxy resin-based concrete anti-sticking agent on the contact surface of the concrete machinery and equipment or concrete precast parts with the concrete.

[0025] In a preferred embodiment of the present invention, the spraying amount is 150g / m 2 After spraying, the step of drying at room temperature for 24 hours is also included.

[0026] The epoxy resin-based concrete anti-sticking agent prepared by the present invention can form a strong and wear-resistant hydrophobic film layer after being sprayed on the inner wall of concrete machinery and equipment and the surface of concrete precast molds. For concrete production and transportation machinery and equipment, the formation of this hydrophobic film layer can effectively improve the stain resistance of the inner wall of the tank body, reduce material residue during concrete discharge, alleviate equipment wear and failure problems, and improve the output, performance and economic benefits of commercial concrete; for concrete precast molds, the formation of this film layer can play a good barrier role at the interface between the precast part and the mold, reduce the adhesion between the concrete and the mold, and improve the appearance quality of the precast part.

[0027] The present invention discloses the following technical effects:

[0028] 1. The preparation process of the epoxy resin-based concrete anti-adhesive agent of the present invention is simple and easy to operate, and the engineering raw materials are widely available, and are easy to mass-produce and apply in engineering.

[0029] 2. The present invention uses epoxy resin with strong adhesion, good acid and alkali corrosion resistance, and strong wear resistance as the base liquid, and constructs a "lotus leaf"-like rough structure inside the anti-sticking agent coating by introducing inorganic nanoparticles to improve the hydrophobicity of the coating. At the same time, a silane coupling agent is used to improve the bonding ability between the anti-sticking agent and the substrate, and to improve the adhesion of the anti-sticking agent on the surface of the substrate, thereby preparing a hydrophobic antifouling coating with high mechanical strength and excellent wear resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 The wear conditions of tungsten steel plates sprayed with the anti-sticking agents in Examples 1-4 and Comparative Example 1, respectively; wherein, (a) is Comparative Example 1, (b) is Example 1, (c) is Example 2, (d) is Example 3, and (e) is Example 4. DETAILED DESCRIPTION

[0032] Various exemplary embodiments of the present invention will now be described in detail. This detailed description should not be considered as limiting the present invention, but rather as a more detailed description of certain aspects, features, and embodiments of the present invention.

[0033] It should be understood that the terms described herein are intended only to describe particular embodiments and are not intended to limit the present invention. In addition, for numerical ranges herein, it should be understood that each intermediate value between the upper and lower limits of the range is also specifically disclosed. The intermediate value within any stated value or stated range, and each smaller range between any other stated value or intermediate value within the stated range, is also encompassed within the present invention. The upper and lower limits of these smaller ranges may be independently included or excluded within the scope.

[0034] Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein may also be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference to disclose and describe the methods and / or materials associated with the documents. In the event of any conflict with any incorporated document, the contents of this specification shall prevail.

[0035] It will be apparent to those skilled in the art that various modifications and variations may be made to the specific embodiments described herein without departing from the scope or spirit of the invention. Other embodiments will be apparent to those skilled in the art from the description of the invention. The description and examples are intended to be exemplary only.

[0036] The words “include,” “including,” “have,” “contain,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0037] The "room temperature" mentioned in the present invention, unless otherwise specified, refers to 20-30°C.

[0038] Unless otherwise specified, the "%" in the present invention refers to mass percentage.

[0039] The present invention provides a method for preparing an epoxy resin-based concrete anti-adhesive agent, comprising the following steps:

[0040] Step 1: Add 100 g of epoxy resin to 10-30 g of diluent by mass, and stir at room temperature until the epoxy resin is completely dissolved to obtain an epoxy resin solution;

[0041] Step 2, adding 1 to 3 g of inorganic nanoparticles and 4 to 8 g of a silane coupling agent to the epoxy resin solution in order by mass, and dispersing the mixture by high-speed shearing at room temperature until the system is uniform to obtain an epoxy resin base liquid;

[0042] Step 3: Dissolve 15-50 g of curing agent in 10-20 g of diluent by mass, and stir at room temperature until the curing agent is completely dissolved and uniformly dissolved to obtain a curing agent solution.

[0043] Step 4: Mix the epoxy resin base liquid and the curing agent solution at room temperature and stir them evenly to obtain the epoxy resin-based concrete anti-sticking agent.

[0044] The epoxy resin-based concrete anti-sticking agent prepared by the present invention is applied to concrete production and transportation machinery and equipment and concrete precast molds, which can effectively ensure the engineering quality of commercial concrete, reduce transportation and equipment maintenance costs, and improve the appearance quality of concrete precast parts, thereby having great application value and economic benefits.

[0045] The epoxy resin-based concrete anti-sticking agent prepared by the present invention can form a hydrophobic and wear-resistant coating when sprayed on the inner wall of concrete production and transportation machinery and equipment, which can effectively reduce material residue during unloading, alleviate problems such as uneven concrete mixing, production and performance degradation, and simplify subsequent cleaning and maintenance procedures, and the output of wastewater and waste materials. At the same time, it reduces the corrosion and wear of the material on the inside of the tank during concrete mixing and transportation, and improves the service life of the machinery and equipment.

[0046] When sprayed onto a precast concrete mold, the epoxy resin-based concrete anti-sticking agent prepared in the present invention forms a strong, hydrophobic film at the interface between the concrete and the mold, preventing direct contact between the concrete and the mold surface. This reduces or prevents adhesion of the precast concrete to the formwork surface after molding, allowing for smooth demolding and ensuring a uniform, smooth surface color, thus improving the appearance and quality of the precast. Furthermore, the film exhibits strong adhesion and excellent wear resistance, allowing for repeated use without the need for repeated spraying.

[0047] Unless otherwise specified, the technical solutions described in the present invention are all conventional solutions in the field, and the reagents or raw materials used, unless otherwise specified, are purchased from commercial channels or have been disclosed.

[0048] The technical solutions provided by the present invention are described in detail below with reference to the embodiments, but they should not be construed as limiting the scope of protection of the present invention.

[0049] Example 1

[0050] A method for preparing an epoxy resin-based concrete anti-adhesive agent comprises the following steps:

[0051] Step 1: add 100 g of bisphenol A epoxy resin E-51 to 10 g of ethyl acetate and stir at room temperature until the epoxy resin is completely dissolved to obtain an epoxy resin solution;

[0052] Step 2: 1 g of halloysite and 4 g of hexadecyltrimethoxysilane are sequentially added to the epoxy resin solution, and dispersed by high-speed shearing at room temperature until the system is uniform to obtain an epoxy resin base liquid;

[0053] Step 3: dissolve 15 g of triethylenetetramine (curing agent) in 10 g of ethyl acetate, and stir at room temperature until the curing agent is completely dissolved and uniformly dissolved to obtain a curing agent solution.

[0054] Step 4: Mix and stir the epoxy resin base liquid and curing agent solution at room temperature to obtain the epoxy resin-based concrete anti-sticking agent.

[0055] Example 2

[0056] A method for preparing an epoxy resin-based concrete anti-adhesive agent comprises the following steps:

[0057] Step 1: add 100 g of bisphenol A epoxy resin E-51 to 20 g of benzyl glycidyl ether 692, and stir at room temperature until the epoxy resin is completely dissolved to obtain an epoxy resin solution;

[0058] Step 2: Add 2 g of hydrophobic nano-silica and 6 g of KH-560 to the above epoxy resin solution in sequence, and disperse them by high-speed shearing at room temperature until the system is uniform to obtain an epoxy resin base liquid;

[0059] Step 3: dissolve 20 g of tetraethylenepentamine in 10 g of benzyl glycidyl ether 692, and stir at room temperature until the curing agent is completely dissolved and uniformly obtained to obtain a curing agent solution.

[0060] Step 4: Mix and stir the epoxy resin base liquid and curing agent solution at room temperature to obtain the epoxy resin-based concrete anti-sticking agent.

[0061] Example 3

[0062] A method for preparing an epoxy resin-based concrete anti-adhesive agent comprises the following steps:

[0063] Step 1: add 100 g of bisphenol A epoxy resin E-44 to 30 g of polyethylene glycol, and stir at room temperature until the epoxy resin is completely dissolved to obtain an epoxy resin solution;

[0064] Step 2: 3 g of sepiolite and 8 g of KH-550 were sequentially added to the epoxy resin solution, and dispersed by high-speed shearing at room temperature until the system was uniform to obtain an epoxy resin base liquid;

[0065] Step 3: dissolve 50 g of polyamide 650 in 20 g of polyethylene glycol, and stir at room temperature until the curing agent is completely dissolved and uniformly dissolved to obtain a curing agent solution.

[0066] Step 4: Mix and stir the epoxy resin base liquid and curing agent solution at room temperature to obtain the epoxy resin-based concrete anti-sticking agent.

[0067] Example 4

[0068] A method for preparing an epoxy resin-based concrete anti-adhesive agent comprises the following steps:

[0069] Step 1: add 100 g of bisphenol A epoxy resin E-44 to 20 g of dibutyl phthalate, and stir at room temperature until the epoxy resin is completely dissolved to obtain an epoxy resin solution;

[0070] Step 2: Add 2 g of hydrophobic nano-silica and 5 g of KH-560 to the epoxy resin solution in sequence, and disperse them by high-speed shearing at room temperature until the system is uniform to obtain an epoxy resin base liquid;

[0071] Step 3: dissolve 30 g of polyamide 651 in 10 g of dibutyl phthalate, and stir at room temperature until the curing agent is completely dissolved and uniformly dissolved to obtain a curing agent solution.

[0072] Step 4: Mix and stir the epoxy resin base liquid and curing agent solution at room temperature to obtain the epoxy resin-based concrete anti-sticking agent.

[0073] Comparative Example 1

[0074] Commercially available anti-adhesive sample A was purchased from Shandong Anrui, model number Fuxun concrete anti-adhesive agent.

[0075] Comparative Example 2

[0076] A method for preparing an epoxy resin-based concrete anti-adhesive agent comprises the following steps:

[0077] Step 1: add 100 g of bisphenol A epoxy resin E-44 to 30 g of polyethylene glycol, and stir at room temperature until the epoxy resin is completely dissolved to obtain an epoxy resin solution;

[0078] Step 2, sequentially adding 3 g of sepiolite to the above epoxy resin solution, and dispersing the mixture by high-speed shearing at room temperature until the system is uniform, to obtain an epoxy resin base liquid;

[0079] Step 3: dissolve 50 g of polyamide 650 in 20 g of polyethylene glycol, and stir at room temperature until the curing agent is completely dissolved and uniformly dissolved to obtain a curing agent solution.

[0080] Step 4: Mix and stir the epoxy resin base liquid and curing agent solution at room temperature to obtain the epoxy resin-based concrete anti-sticking agent.

[0081] In order to verify the hydrophobic modification effect of the epoxy resin-based concrete anti-adhesive agent (hereinafter referred to as the anti-adhesive agent) of the present invention on concrete machinery and molds, a tungsten steel plate, which is a common material for machinery and molds, was selected as the substrate. The anti-adhesive agent sample A in Comparative Example 1, Comparative Example 2, and the anti-adhesive agents prepared in Examples 1, 2, 3, and 4 were evenly sprayed on the clean tungsten steel plate surface by a spray gun, and the spraying amount was 150 g / m 2 After spraying, place it at room temperature to dry for 24 hours, and then conduct tests and comparisons after the film is formed.

[0082] Contact angle tests were performed on the cleaned tungsten steel plate substrate, the tungsten steel plate sprayed with the anti-sticking agent sample A of comparative example 1, the tungsten steel plate sprayed with the anti-sticking agent of comparative example 2, the tungsten steel plate sprayed with the anti-sticking agent of example 1, the tungsten steel plate sprayed with the anti-sticking agent of example 2, the tungsten steel plate sprayed with the anti-sticking agent of example 3, and the tungsten steel plate sprayed with the anti-sticking agent of example 4. The test results are shown in Table 1.

[0083] Table 1 Contact angle of tungsten steel plate before and after anti-adhesive treatment

[0084]

[0085]

[0086] The test results show that the contact angle of the tungsten steel plate substrate surface is 88°, and its hydrophobicity is poor. After spraying the anti-sticking agent sample A of comparative example 1, the sample prepared in comparative example 2, and the anti-sticking agents prepared in examples 1, 2, 3, and 4 on the substrate surface, the contact angles of the tungsten steel plate surface are all greater than 90°. The anti-sticking agent in comparative example 2 has a lower contact angle due to the lack of key hydrophobic groups, while the organic film layer formed on the substrate surface by the anti-sticking agents prepared in examples 2, 3, and 4 has a higher contact angle and exhibits higher hydrophobicity. The hydrophobic film layer formed by the anti-sticking agent on the substrate surface can effectively prevent the concrete slurry from adhering to the inner wall of the equipment and the mold surface during the mixing and curing process, thereby reducing material residue during unloading and enabling the prefabricated parts to be demolded more smoothly.

[0087] Subsequently, the wear resistance of the coating after film formation of the anti-sticking agent sample A of Comparative Example 1 and the anti-sticking agent prepared in Examples 1, 2, 3, and 4 was tested using a wear tester. The test method is as follows: the coated tungsten steel plate is fixed in the wear tester fixture, and then the grinding head of the tester is coated with glass wool (0000 specification, produced by BON STAR, Japan) and a 1 kg weight is placed, and then the grinding head is lowered and the tester is started. The grinding head is linearly reciprocated on the coating surface for 100 times, and then the surface coating of the tungsten steel plate is observed after it is removed. Figure 1 The wear conditions of the tungsten steel plate sprayed with the anti-sticking agent sample A of comparative example 1, the tungsten steel plate sprayed with the anti-sticking agent of example 1, the tungsten steel plate sprayed with the anti-sticking agent of example 2, the tungsten steel plate sprayed with the anti-sticking agent of example 3, and the tungsten steel plate sprayed with the anti-sticking agent of example 4 are listed. Figure 1 As can be seen in (a), after 50 cycles of linear reciprocating friction, the coating of the test area of ​​the tungsten steel plate sprayed with the anti-sticking agent sample A of comparative example 1 was significantly worn, showing poor wear resistance, and the coating adhesion and wear resistance need to be improved. However, the coating of the tungsten steel plate sprayed with the anti-sticking agent prepared in Examples 1, 2, 3, and 4 remained intact after 100 cycles of linear reciprocating friction. The tungsten steel plate sprayed with the anti-sticking agent prepared in Example 1 had a slight small area of ​​coating peeling phenomenon on its surface, but the coating formed on the tungsten steel plate with the anti-sticking agent prepared in Examples 2, 3, and 4 showed good wear resistance.

[0088] Based on the above experimental results, compared with the anti-sticking agent sample A in Comparative Example 1, the anti-sticking agent prepared in the present invention not only imparts hydrophobicity to the substrate but also has good wear resistance, and can effectively and durably reduce the direct contact between the concrete material and the inner wall of the equipment and the mold, thereby avoiding material residue and demolding difficulties caused by adhesion at the material interface.

[0089] The preparation process of the epoxy resin-based concrete anti-adhesive agent of the present invention is simple and easy to operate, and the source of engineering raw materials is wide, and it is easy to mass-produce and apply in engineering. The epoxy resin with strong adhesion, good acid and alkali corrosion resistance and strong wear resistance is used as the base liquid, and a rough structure similar to a "lotus leaf" is constructed inside the coating by introducing inorganic nanoparticles to improve the hydrophobicity of the coating. At the same time, a silane coupling agent is used to improve the bonding ability of the organic coating and the substrate, and the adhesion of the coating on the surface of the substrate is improved, thereby preparing a hydrophobic antifouling coating with high mechanical strength and excellent wear resistance. When the coating is applied to the inner wall of concrete production and transportation machinery and equipment, it can effectively reduce the material residue during unloading, alleviate the problems of uneven concrete mixing, production and performance degradation, and simplify the subsequent cleaning and maintenance procedures, the output of wastewater and waste materials, and at the same time reduce the corrosion and wear of the material on the inside of the tank during concrete mixing and transportation, thereby improving the service life of the machinery and equipment. When this coating is applied to the concrete precast mold, it can form a strong and hydrophobic film layer at the interface between the concrete and the mold, avoiding direct contact between the concrete and the mold surface, thereby reducing or preventing the adhesion of the concrete precast part to the template surface after molding, allowing it to be demoulded smoothly and ensuring the uniform color, smoothness and flatness of the precast part surface, thereby improving the appearance and use quality of the precast part.

[0090] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A method for preparing an epoxy resin-based concrete anti-adhesive agent, characterized in that: The following steps are involved: dissolving the epoxy resin in a diluent to obtain an epoxy resin solution; adding inorganic nanoparticles and a silane coupling agent into the epoxy resin solution and dispersing them evenly to obtain an epoxy resin base liquid; dissolving the curing agent in the diluent to obtain a curing agent solution; The epoxy resin base liquid and the curing agent solution are mixed to obtain the epoxy resin-based concrete anti-adhesive agent.

2. The preparation method of the epoxy resin-based concrete anti-adhesive agent according to claim 1, characterized in that: The epoxy resin is bisphenol A epoxy resin E-51 and / or bisphenol A epoxy resin E-44; The diluent is at least one of benzyl glycidyl ether 692, ethyl acetate, polyethylene glycol, and dibutyl phthalate; When preparing the epoxy resin solution, the mass ratio of the epoxy resin to the diluent is 100:(10-30).

3. The preparation method of the epoxy resin-based concrete anti-adhesive agent according to claim 1, characterized in that: The inorganic nanoparticles are at least one of hydrophobic nano-silica, halloysite, sepiolite, and diatomaceous earth; The silane coupling agent is at least one of hexadecyltrimethoxysilane, KH-550, and KH-560; The addition amount of the inorganic nanoparticles is 1wt% to 3wt% of the mass of the epoxy resin; The added amount of the silane coupling agent is 4 wt% to 8 wt% of the epoxy resin.

4. The preparation method of the epoxy resin-based concrete anti-adhesive agent according to claim 1, characterized in that: The curing agent is at least one of triethylenetetramine, tetraethylenepentamine, polyamide 650, and polyamide 651; When preparing the curing agent solution, the mass ratio of the curing agent to the diluent is (15-50):(10-20).

5. The preparation method of the epoxy resin-based concrete anti-adhesive agent according to claim 1, characterized in that: The mass ratio of the curing agent to the epoxy resin is (15-50):

100.

6. The epoxy resin-based concrete anti-adhesive agent prepared according to the preparation method according to any one of claims 1 to 5.

7. Use of the epoxy resin-based concrete anti-adhesive agent according to claim 6 in mechanical equipment used in the preparation or transportation of commercial concrete and in precast concrete parts.

8. A method for improving the hydrophobicity and wear resistance of concrete machinery and equipment or precast concrete parts, characterized in that: The epoxy resin-based concrete anti-adhesive agent according to claim 6 is sprayed on the contact surface of concrete machinery or concrete prefabricated parts with concrete.

9. The method for improving the hydrophobicity and wear resistance of concrete machinery and equipment or precast concrete parts according to claim 8, characterized in that: Spraying amount is 150g / m 2 After spraying, the step of drying at room temperature for 24 hours is also included.

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