A treatment agent for preventing corrosion on the surface of a zinc-aluminum-magnesium alloy and a method for preparing the same

Abstract

The application relates to the technical field of alloy surface treatment, and particularly discloses a treatment agent for preventing corrosion on the surface of a zinc-aluminum-magnesium alloy and a preparation method thereof. The treatment agent for preventing corrosion on the surface of the zinc-aluminum-magnesium alloy is composed of a treatment agent main component and a treatment agent curing component, wherein the treatment agent main component comprises the following raw materials: bisphenol A type epoxy resin, anti-oxidation toughening cellulose, composite solvent, leveling agent and defoaming agent; the treatment agent curing component comprises the following raw materials: tackifying curing compound and composite solvent. The treatment agent prepared by the application has excellent adhesion, toughness, oxidation resistance and corrosion prevention effect when acting on the surface of the zinc-aluminum-magnesium alloy, can effectively protect the zinc-aluminum-magnesium alloy, and makes the zinc-aluminum-magnesium alloy have a long service life.

Description

Technical Field

[0001] This invention relates to the field of alloy surface treatment technology, specifically to a treatment agent for corrosion protection of zinc-aluminum-magnesium alloy surfaces and its preparation method. Background Technology

[0002] Zinc-aluminum-magnesium alloys, as a new type of lightweight metal material, have shown broad application prospects in automobile manufacturing, building structures, marine engineering, and power equipment due to their excellent mechanical properties and machinability. Their alloying design, through solid solution strengthening of magnesium and the synergistic effect of aluminum and zinc, can effectively improve the corrosion resistance of the material. However, with the continuous improvement of the service life of materials in industrial applications, the surface of ordinary zinc-aluminum-magnesium alloys is prone to accelerated local corrosion due to chemical erosion and other reasons. Especially in the humid and hot coastal environment, the rate of decline in its corrosion resistance far exceeds expectations, which directly restricts the large-scale application of zinc-aluminum-magnesium alloys in various fields.

[0003] To address these issues, the most common method is to perform anti-corrosion treatment on the surface of zinc-aluminum-magnesium alloys. Traditional treatment agents, such as epoxy resin and polyurethane, dominate the market due to their advantages of convenient application and low cost. However, ordinary treatment agents, after curing, rely solely on physical adsorption to the alloy surface, resulting in weak adhesion. Under the influence of thermal expansion and contraction or mechanical stress, they are prone to detachment, thus losing their protective effect on the alloy surface. Furthermore, they are not oxidation-resistant and are prone to yellowing and powdering under high temperatures or oxidizing media. They also have poor toughness and are prone to micro-cracks under substrate deformation or impact loads, providing channels for the penetration of corrosive media and severely affecting the anti-corrosion effect of the zinc-aluminum-magnesium alloy surface. Patent CN103848943B discloses a method for preparing an acrylic-modified polyurethane resin dispersion for metal coatings. The method involves end-capping the terminal isocyanate in the polyurethane resin preparation process with hydroxyethyl acrylate, followed by neutralization with a neutralizing agent to form a salt, resulting in an aqueous dispersion. This dispersion is then polymerized by free radical polymerization with an initiator, emulsifier, and other acrylic monomers to form a polyurethane dispersion. This dispersion, after film formation, exhibits excellent corrosion resistance, excellent hardness, and mechanical properties. However, the patent does not improve the adhesion between the dispersion and the metal substrate. Under thermal expansion and contraction or mechanical stress, the dispersion is still prone to detachment, thus losing its anti-corrosion effect on the metal surface. Summary of the Invention

[0004] The purpose of this invention is to provide a treatment agent for corrosion protection of zinc-aluminum-magnesium alloy surfaces and its preparation method, which solves the problems of poor adhesion between the cured surface film of the zinc-aluminum-magnesium alloy surface corrosion protection treatment agent and the substrate material, easy oxidation, poor toughness, and the need to improve the corrosion protection ability.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A treatment agent for corrosion protection of zinc-aluminum-magnesium alloy surfaces comprises two parts: a main component and a curing component. The main component includes the following raw materials in parts by weight: 60-70 parts bisphenol A type epoxy resin, 12-18 parts antioxidant toughening cellulose, 60-80 parts composite solvent, 1-1.5 parts leveling agent, and 0.3-0.8 parts defoamer. The curing component includes the following raw materials in parts by weight: 20-30 parts tackifying and curing compound, and 25-40 parts composite solvent. The antioxidant toughening cellulose is prepared by reacting bacterial cellulose with eugenol. The tackifying and curing compound is prepared by reacting a multifunctional polymer with 2-mercaptopyridine. The multifunctional polymer is prepared by free radical polymerization of 3-methacryloyldopamine, perfluorohexyl ethyl acrylate, and 2-chloroethyl vinyl ether.

[0007] Furthermore, the composite solvent is composed of propylene glycol methyl ether acetate, ethyl lactate, and dimethyl sulfoxide in a mass ratio of 7-7.8:2-2.5:1-1.3.

[0008] Furthermore, the leveling agent is any one of polyurethane leveling agent and acrylate leveling agent; the defoamer is any one of dimethyl silicone oil defoamer and fatty alcohol polyoxyethyl ether defoamer.

[0009] Furthermore, the method for preparing the antioxidant toughening cellulose includes the following steps:

[0010] Bacterial cellulose and syringic acid were placed in dimethyl sulfoxide, thoroughly mixed and stirred, and then a composite catalyst was added. The mixture was reacted at room temperature for 10-12 hours. The solvent was removed by rotary evaporation, impurities were removed, and the product was collected to obtain antioxidant toughening cellulose.

[0011] Through the above technical solution, under the action of a composite catalyst, the hydroxyl groups in the bacterial cellulose structure and the carboxyl groups in the eugenol structure undergo an esterification reaction to obtain antioxidant toughening cellulose. This antioxidant toughening cellulose uses cellulose as a polymer backbone, and eugenol with a hindered phenolic structure is anchored in the polymer backbone of cellulose through a grafting reaction. Eugenol has excellent antioxidant capacity, but as a small molecule antioxidant, it is prone to migration during long-term use, resulting in loss of protection for the matrix material. Anchoring it with cellulose can enhance the antioxidant time-limited effect of eugenol. On the other hand, the multiple hydroxyl groups in the cellulose structure can participate in the curing process of the epoxy resin matrix, so that the treatment agent has excellent toughness after curing on the zinc-aluminum-magnesium alloy surface. Combined with eugenol, it exerts a long-term antioxidant effect, effectively enhancing the protective effect of the treatment agent on the zinc-aluminum-magnesium alloy.

[0012] Furthermore, the composite catalyst is N,N-dicyclohexylcarbodiimide and 4-dimethylaminopyridine in a mass ratio of 0.1-0.18:0.01-0.03.

[0013] Furthermore, the preparation method of the tackifying and curing composite includes the following steps:

[0014] S1: 3-Methacrylamide, perfluorohexyl ethyl acrylate, and 2-chloroethyl vinyl ether are placed in tetrahydrofuran, nitrogen gas is introduced, the temperature is raised to 60-65℃, an initiator is added, the reaction is stirred for 8-10 hours, and the product is collected after cooling to obtain a multifunctional polymer.

[0015] S2: The multifunctional polymer is placed in N,N-dimethylformamide, nitrogen gas is introduced, 2-mercaptopyridine and catalyst are added, the temperature is raised to 75-80℃ and the reaction is carried out for 6-8 hours. After vacuum distillation to remove impurities and collect the product, the tackifying and curing composite is obtained.

[0016] Through the above technical solution, under the action of an initiator, 3-methacrylamide, perfluorohexyl ethyl acrylate, and 2-chloroethyl vinyl ether undergo a free radical polymerization reaction to form a multifunctional polymer with a catechol structure, organic fluorine, organic chlorine, and ether bonds. Then, under the action of a catalyst, the active chlorine in the multifunctional polymer structure undergoes a quaternization reaction with the pyridine ring in the 2-mercaptopyridine structure to obtain a tackifying and curing composite. This tackifying and curing composite has multiple thiol groups that can be used as curing agents for the treatment agent. The catechol structure and ether bonds in its structure can effectively enhance the adhesion of the treatment agent to the zinc-aluminum-magnesium alloy surface, while the organic fluorine in its structure can effectively enhance the corrosion resistance of the treatment agent. Together with the adhesion generated by the catechol structure and ether bonds, it forms a synergistic effect. On the one hand, it enhances the adhesion, making the cured coating less likely to fall off and preventing the penetration of corrosive media. On the other hand, it directly enhances the corrosion resistance of the treatment agent, effectively protecting the zinc-aluminum-magnesium alloy.

[0017] Further, in step S1, the initiator is either azobisisobutyronitrile or azobisisoheptanenitrile.

[0018] Furthermore, in step S2, the catalyst is potassium carbonate.

[0019] A method for preparing a corrosion-resistant treatment agent for zinc-aluminum-magnesium alloy surfaces includes the following steps:

[0020] Step 1: Mix bisphenol A type epoxy resin, antioxidant toughening cellulose, composite solvent, leveling agent and defoamer, heat to 45-55℃ and stir to form a homogeneous system, and then cool to room temperature to obtain the main components of the treatment agent;

[0021] Step 2: Mix the tackifying and curing compound with the composite solvent evenly to obtain the curing component of the treatment agent.

[0022] In this solution, the main component of the treatment agent is obtained by mixing bisphenol A epoxy resin, antioxidant toughening cellulose, composite solvent, and additives. The tackifying and curing compound is then mixed with the composite solvent and used as the curing component of the treatment agent. When treating the surface of zinc-aluminum-magnesium alloy, the zinc-aluminum-magnesium alloy plate is degreased, washed, and dried. The main component of the treatment agent and the curing component of the treatment agent are then mixed, sprayed evenly, and cured at 80°C for 1.5 hours. This forms a dense protective film on the surface of the zinc-aluminum-magnesium alloy, giving it excellent toughness, oxidation resistance, and corrosion resistance. It will not crack or peel off during long-term use and has a long service life.

[0023] The beneficial effects of this invention are:

[0024] This invention incorporates antioxidant and toughening cellulose and a thickening and curing composite into the preparation process of the treatment agent, resulting in a treatment agent that exhibits excellent adhesion, toughness, antioxidant capacity, and corrosion resistance when applied to the surface of zinc-aluminum-magnesium alloys. This effectively protects the zinc-aluminum-magnesium alloys and extends their service life.

[0025] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 The UV spectra of bacterial cellulose and antioxidant toughening cellulose in this embodiment of the invention are shown. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The preparation methods of the thickening and curing composite and the antioxidant and toughening cellulose in the following embodiments and comparative examples of the present invention are as follows:

[0030] I. Preparation of Tackifying and Curing Compound

[0031] S1: 2g of 3-methacrylamide, 1.8g of perfluorohexyl ethyl acrylate, and 1.1g of 2-chloroethyl vinyl ether were placed in 80ml of tetrahydrofuran, nitrogen gas was introduced, the temperature was raised to 60℃, 0.2g of azobisisobutyronitrile was added, the mixture was stirred for 8h, and the product was collected after cooling to obtain the multifunctional polymer.

[0032] S2: Place 3.5g of the multifunctional polymer in 50ml of N,N-dimethylformamide, purge with nitrogen, add 3.8g of 2-mercaptopyridine and 0.3g of potassium carbonate, heat to 75℃ and react for 6h, remove impurities by vacuum distillation and collect the product to obtain the tackifying and curing composite.

[0033] Elemental analysis of the multifunctional polymer and the tackifying and curing composite using a Thermo elemental analyzer revealed that the multifunctional polymer does not contain sulfur, while the tackifying and curing composite contains 4.8% sulfur. The presence of sulfur in the tackifying and curing composite is due to the introduction of thiol groups through a quaternization reaction between the active chlorine in the multifunctional polymer structure and the pyridine ring in the 2-mercaptopyridine structure.

[0034] II. Preparation of Antioxidant and Toughening Cellulose

[0035] 1.5g of bacterial cellulose and 1.3g of syringic acid were placed in 60ml of dimethyl sulfoxide and thoroughly mixed and stirred. Then, 0.15g of N,N-dicyclohexylcarbodiimide and 0.02g of 4-dimethylaminopyridine were added. The mixture was reacted at room temperature for 10h. The solvent was removed by rotary evaporation, and the product was collected after removing impurities to obtain antioxidant toughening cellulose.

[0036] Bacterial cellulose and antioxidant toughening cellulose were analyzed using an Evolution 300 Thermo Fisher Scientific UV spectrophotometer. The results are as follows: Figure 1 As shown, the UV spectrum of bacterial cellulose shows almost no absorption in the 200-400nm range, presenting a relatively flat curve. In contrast, the UV spectrum of antioxidant toughening cellulose shows a strong absorption peak at 274nm, which is the absorption peak of the benzene ring in syringic acid. The appearance of the benzene ring absorption peak indicates that syringic acid has been grafted into the molecular backbone of bacterial cellulose.

[0037] Example 1

[0038] Preparation of treatment agent

[0039] Step 1: Mix 60 parts of bisphenol A type epoxy resin, 12 parts of antioxidant toughening cellulose, 60 parts of a composite solvent of propylene glycol methyl ether acetate, ethyl lactate, and dimethyl sulfoxide in a volume ratio of 7:2:1, 1 part of polyurethane leveling agent, and 0.3 parts of dimethyl silicone oil defoamer. Heat to 45°C and stir to form a homogeneous system. After cooling to room temperature, the main component of the treatment agent is obtained.

[0040] Step 2: Mix 20 parts of the tackifying and curing compound with 25 parts of a composite solvent composed of propylene glycol methyl ether acetate, ethyl lactate, and dimethyl sulfoxide in a volume ratio of 7:2:1 to obtain the curing component of the treatment agent.

[0041] Example 2

[0042] Preparation of treatment agent

[0043] Step 1: Mix 65 parts of bisphenol A epoxy resin, 15 parts of antioxidant toughening cellulose, 60 parts of a composite solvent of propylene glycol methyl ether acetate, ethyl lactate, and dimethyl sulfoxide in a volume ratio of 7.5:2.3:1.2, 1.2 parts of acrylate leveling agent, and 0.6 parts of fatty alcohol polyoxyethyl ether defoamer. Heat to 50°C and stir to form a homogeneous system. After cooling to room temperature, the main component of the treatment agent is obtained.

[0044] Step 2: Mix 25 parts of the tackifying and curing compound with 30 parts of a composite solvent composed of propylene glycol methyl ether acetate, ethyl lactate, and dimethyl sulfoxide in a volume ratio of 7.5:2.3:1.2 to obtain the curing component of the treatment agent.

[0045] Example 3

[0046] Preparation of treatment agent

[0047] Step 1: Mix 70 parts of bisphenol A epoxy resin, 18 parts of antioxidant toughening cellulose, 80 parts of a composite solvent of propylene glycol methyl ether acetate, ethyl lactate, and dimethyl sulfoxide in a volume ratio of 7.8:2.5:1.3, 1.5 parts of polyurethane leveling agent, and 0.8 parts of dimethyl silicone oil defoamer. Heat to 55°C and stir to form a homogeneous system. After cooling to room temperature, the main component of the treatment agent is obtained.

[0048] Step 2: Mix 30 parts of the tackifying and curing compound with 40 parts of a composite solvent composed of propylene glycol methyl ether acetate, ethyl lactate, and dimethyl sulfoxide in a volume ratio of 7.8:2.5:1.3 to obtain the curing component of the treatment agent.

[0049] Comparative Example 1

[0050] Preparation of treatment agent

[0051] Step 1: Mix 65 parts of bisphenol A type epoxy resin, 60 parts of propylene glycol methyl ether acetate, ethyl lactate, and dimethyl sulfoxide compounded solvent in a volume ratio of 7.5:2.3:1.2, 1.2 parts of acrylate leveling agent, and 0.6 parts of fatty alcohol polyoxyethyl ether defoamer. Heat to 50°C and stir to form a homogeneous system. After cooling to room temperature, the main component of the treatment agent is obtained.

[0052] Step 2: Mix 25 parts of the tackifying and curing compound with 30 parts of a composite solvent composed of propylene glycol methyl ether acetate, ethyl lactate, and dimethyl sulfoxide in a volume ratio of 7.5:2.3:1.2 to obtain the curing component of the treatment agent.

[0053] Comparative Example 2

[0054] Preparation of treatment agent

[0055] Step 1: Mix 65 parts of bisphenol A epoxy resin, 15 parts of antioxidant toughening cellulose, 60 parts of a composite solvent of propylene glycol methyl ether acetate, ethyl lactate, and dimethyl sulfoxide in a volume ratio of 7.5:2.3:1.2, 1.2 parts of acrylate leveling agent, and 0.6 parts of fatty alcohol polyoxyethyl ether defoamer. Heat to 50°C and stir to form a homogeneous system. After cooling to room temperature, the main component of the treatment agent is obtained.

[0056] Step 2: Mix 25 parts of polythiol curing agent with 30 parts of a composite solvent of propylene glycol methyl ether acetate, ethyl lactate and dimethyl sulfoxide in a volume ratio of 7.5:2.3:1.2 to obtain the curing component of the treatment agent.

[0057] Comparative Example 3

[0058] Preparation of treatment agent

[0059] Step 1: Mix 65 parts of bisphenol A type epoxy resin, 15 parts of bacterial cellulose, 60 parts of a composite solvent of propylene glycol methyl ether acetate, ethyl lactate, and dimethyl sulfoxide in a volume ratio of 7.5:2.3:1.2, 1.2 parts of acrylate leveling agent, and 0.6 parts of fatty alcohol polyoxyethyl ether defoamer. Heat to 50°C and stir to form a homogeneous system. After cooling to room temperature, the main component of the treatment agent is obtained.

[0060] Step 2: Mix 25 parts of the tackifying and curing compound with 30 parts of a composite solvent composed of propylene glycol methyl ether acetate, ethyl lactate, and dimethyl sulfoxide in a volume ratio of 7.5:2.3:1.2 to obtain the curing component of the treatment agent.

[0061] Performance testing

[0062] The main components of the treatment agents prepared in Examples 1-3 and Comparative Examples 1-3 were mixed with the curing components and sprayed onto steel plates conforming to specifications. After curing at 80℃ for 1.5 hours, the samples were used as samples. Peel strength tests were performed on the samples, as well as on samples treated in an aging chamber at 80℃ for 36 hours, according to standard GB / T2792-2014, to determine the adhesion and oxidation resistance of the samples. Salt spray tests were performed on the samples according to standard GB / T1771-2007 to determine the corrosion resistance of the samples. The toughness of the samples was determined by the minimum shaft diameter, according to standard GB / T1731-2020; the smaller the minimum shaft diameter, the stronger the toughness. The test results are shown in the table below:

[0063] Peel strength (N / mm) Peel strength after aging (N / mm) Salt spray resistance (h) Minimum shaft diameter (mm) Example 1 13.5 13.2 1700 1 Example 2 13.9 13.6 1800 1 Example 3 13.7 13.3 1700 0.5 Comparative Example 1 11.4 7.0 1300 4 Comparative Example 2 6.7 6.3 800 1 Comparative Example 3 11.8 7.3 1400 2

[0064] As shown in the table above, the samples prepared in Examples 1-3 all exhibit excellent adhesion, antioxidant capacity, corrosion resistance, and toughness. The sample prepared in Comparative Example 1 did not contain antioxidant toughening cellulose, resulting in poor anti-aging capacity and toughness. The sample prepared in Comparative Example 2 directly used polythiol curing agent, resulting in poor corrosion resistance and adhesion. The sample prepared in Comparative Example 3 directly used bacterial cellulose without eugenol modification treatment, thus exhibiting poor antioxidant capacity.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] The above content is merely an example and illustration of the concept of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the scope defined by the inventive concept, they should all fall within the protection scope of the present invention.

Claims

1. A treatment agent for corrosion protection of zinc-aluminum-magnesium alloy surfaces, characterized in that, The treatment agent consists of two parts: a main component and a curing component. The main component comprises the following raw materials in parts by weight: 60-70 parts bisphenol A epoxy resin, 12-18 parts antioxidant toughening cellulose, 60-80 parts composite solvent, 1-1.5 parts leveling agent, and 0.3-0.8 parts defoamer. The curing component comprises the following raw materials in parts by weight: 20-30 parts tackifying and curing compound, and 25-40 parts composite solvent. The antioxidant toughening cellulose is prepared by reacting bacterial cellulose with eugenol. The tackifying and curing compound is prepared by reacting a multifunctional polymer with 2-mercaptopyridine. The multifunctional polymer is prepared by free radical polymerization of 3-methacryloyldopamine, perfluorohexyl ethyl acrylate, and 2-chloroethyl vinyl ether.

2. The anti-corrosion treatment agent for zinc-aluminum-magnesium alloy surfaces according to claim 1, characterized in that, The composite solvent is composed of propylene glycol methyl ether acetate, ethyl lactate, and dimethyl sulfoxide in a mass ratio of 7-7.8:2-2.5:1-1.

3.

3. The anti-corrosion treatment agent for zinc-aluminum-magnesium alloy surfaces according to claim 1, characterized in that, The leveling agent is any one of polyurethane leveling agent and acrylate leveling agent; the defoamer is any one of dimethyl silicone oil defoamer and fatty alcohol polyoxyethyl ether defoamer.

4. The anti-corrosion treatment agent for zinc-aluminum-magnesium alloy surfaces according to claim 1, characterized in that, The method for preparing the antioxidant and toughening cellulose includes the following steps: Bacterial cellulose and syringic acid were placed in dimethyl sulfoxide, thoroughly mixed and stirred, and then a composite catalyst was added. The mixture was reacted at room temperature for 10-12 hours. The solvent was removed by rotary evaporation, impurities were removed, and the product was collected to obtain antioxidant toughening cellulose.

5. The anti-corrosion treatment agent for zinc-aluminum-magnesium alloy surfaces according to claim 4, characterized in that, The composite catalyst is N,N-dicyclohexylcarbodiimide and 4-dimethylaminopyridine in a mass ratio of 0.1-0.18:0.01-0.

03.

6. The anti-corrosion treatment agent for zinc-aluminum-magnesium alloy surfaces according to claim 1, characterized in that, The preparation method of the tackifying and curing composite includes the following steps: S1: 3-Methacrylamide, perfluorohexyl ethyl acrylate, and 2-chloroethyl vinyl ether are placed in tetrahydrofuran, nitrogen gas is introduced, the temperature is raised to 60-65℃, an initiator is added, the reaction is stirred for 8-10 hours, and the product is collected after cooling to obtain a multifunctional polymer. S2: The multifunctional polymer is placed in N,N-dimethylformamide, nitrogen gas is introduced, 2-mercaptopyridine and catalyst are added, the temperature is raised to 75-80℃ and the reaction is carried out for 6-8 hours. After vacuum distillation to remove impurities and collect the product, the tackifying and curing composite is obtained.

7. The anti-corrosion treatment agent for zinc-aluminum-magnesium alloy surfaces according to claim 6, characterized in that, In step S1, the initiator is either azobisisobutyronitrile or azobisisoheptanenitrile.

8. The anti-corrosion treatment agent for zinc-aluminum-magnesium alloy surfaces according to claim 6, characterized in that, In step S2, the catalyst is potassium carbonate.

9. The method for preparing a surface anti-corrosion treatment agent for zinc-aluminum-magnesium alloys as described in claim 1, characterized in that, Includes the following steps: Step 1: Mix bisphenol A type epoxy resin, antioxidant toughening cellulose, composite solvent, leveling agent and defoamer, heat to 45-55℃ and stir to form a homogeneous system, and then cool to room temperature to obtain the main components of the treatment agent; Step 2: Mix the tackifying and curing compound with the composite solvent evenly to obtain the curing component of the treatment agent.

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