An anti-fingerprint protective agent and method of use thereof

Abstract

This application relates to the field of surface treatment processing, and specifically discloses an anti-fingerprint protectant and its application method, comprising the following raw materials: nickel sulfate: 7-14 parts; nickel chloride: 3-7 parts; ferrous sulfate: 1.6-2.2 parts; polytetrafluoroethylene: 11-14 parts; nonionic surfactant: 3-6 parts; primary brightener: 0.06-0.12 parts; secondary brightener: 0.7-1.3 parts; stabilizer: 1.5-2.3 parts; terpene phenol resin: 1.5-3.5 parts; sodium sulfide: 2.3-3.6 parts. This application can effectively improve the anti-fingerprint properties and service life of existing automotive interior parts.

Description

Technical Field

[0001] This application relates to the field of surface treatment processing, and more specifically, it relates to an anti-fingerprint protectant and a method of using the same. Background Technology

[0002] Electroplating, as a traditional surface treatment technology, occupies a pivotal position in my country's industrial production. Electroplated parts are widely used in various industries due to their excellent corrosion resistance, aesthetics, and practicality. In recent years, with the continuous development of science and technology, electroplating technology has also been constantly improving, and the surface quality of automotive interior parts has been significantly enhanced.

[0003] Most existing automotive interior parts use vacuum coating as their outermost layer. This not only makes it easy to obtain a variety of colors, but also makes the vacuum coating more wear-resistant than electroplated chromium. Therefore, this technology is widely used. However, because the metal particles in the vacuum coating are very small and the film is not dense and contains many pores, when people handle the product, their sweat easily adheres to the product, leaving fingerprints. These fingerprints are not easy to wash off, affecting the user experience. Summary of the Invention

[0004] In order to effectively improve the fingerprint resistance and service life of existing automotive interior parts, this application provides an anti-fingerprint protectant and its application method.

[0005] In a first aspect, this application provides an anti-fingerprint protectant, employing the following technical solution:

[0006] An anti-fingerprint protectant, comprising the following raw material components in parts by weight:

[0007] Nickel sulfate: 7 to 14 parts;

[0008] Nickel chloride: 3 to 7 parts;

[0009] Ferrous sulfate: 1.6 parts to 2.2 parts;

[0010] Polytetrafluoroethylene: 11 to 14 parts;

[0011] Nonionic surfactant: 3 to 6 parts;

[0012] Main light-reflecting agent: 0.06–0.12 parts;

[0013] Auxiliary light agent: 0.7–1.3 parts;

[0014] Stabilizer: 1.5 to 2.3 parts;

[0015] Terpene phenol resin: 1.5 parts to 3.5 parts;

[0016] Sodium sulfide: 2.3 to 3.6 parts.

[0017] By adopting the above technical solution, the compounding effect between polytetrafluoroethylene, terpene phenol resin and sodium sulfide is utilized to generate a further synergistic effect with nickel sulfate, nickel chloride and ferrous sulfate, thereby improving the uniformity of the anti-fingerprint agent on the substrate surface and enhancing the adhesion of the anti-fingerprint agent to the automotive interior parts substrate. While maintaining the bright metallic appearance of the substrate, it has good anti-fingerprint properties, corrosion resistance and wear resistance, thus achieving the goal of extending the service life of automotive interior parts.

[0018] Specifically, by utilizing the stretching and adhesive properties of terpene phenol resin, the molecular chains of polytetrafluoroethylene (PTFE) can be effectively extended and firmly covered on the surface of the substrate, allowing for better extension and diffusion of nickel and iron ions in the solution. This effectively improves the uniformity of nickel and iron ion dispersion in the solution. Furthermore, the high molecular weight network structure formed by the terpene phenol resin in the solution allows for more secure deposition of nickel and iron ions onto the PTFE molecular chains, forming a film. Simultaneously, by utilizing the solubility properties of sodium sulfide in polar organic solvents, the nickel and iron ions in the solution can be further dissolved. When ions are deposited on the molecular chains of polytetrafluoroethylene (PTFE), sodium sulfide effectively fills the gaps between nickel and iron ions and the PTFE molecular chains, thereby making the formed anti-fingerprint film more uniform and reducing the impact of excessive local aggregation on the uniformity of the electroplated layer. The compounding of terpene phenol resin, sodium sulfide, and PTFE effectively synergizes with nickel sulfate, nickel chloride, and ferrous sulfate to form a dense and smooth anti-fingerprint protective film on the substrate surface, thereby enhancing the anti-fingerprint, wear-resistant, and corrosion-resistant properties of the automotive interior parts substrate surface.

[0019] Optionally, the viscosity of the terpene phenol resin is 600 mPa·s.

[0020] Optionally, the sodium sulfide is monoclinic sodium sulfide.

[0021] Optionally, the degree of polymerization of the polytetrafluoroethylene is 3500.

[0022] By adopting the above technical solution and selecting terpene phenol resin, sodium sulfide and polytetrafluoroethylene materials with specific parameters, the compounding effect of the three in the solution can be further optimized, thereby obtaining automotive interior parts materials with better anti-fingerprint, wear-resistant and corrosion-resistant properties on the surface of the substrate.

[0023] Optionally, the buffer is one or both of disodium hydrogen phosphate and sodium bicarbonate.

[0024] Optionally, the primary light-emitting agent is one or both of mercaptoethanol and mercaptoacetic acid.

[0025] By adopting the above technical solution and selecting specific buffer and light-reducing agent materials, the pH value in the solution can be better balanced, the precipitation of metal ions can be inhibited, and the deposition stability of metal ions on the polytetrafluoroethylene molecular chain can be maintained. This is conducive to uniform deposition on the substrate surface, so as to obtain an anti-fingerprint protective film layer with better performance, thereby effectively extending the service life of automotive interior parts materials.

[0026] Optionally, the terpene phenol resin is pretreated and modified. The pretreatment modification steps include: adding aluminum silicate and aminomethyltrimethoxysilane to a solvent and mixing them evenly to obtain a mixture A; adding the pretreated and modified terpene phenol resin to the mixture A to form a mixture B; heating and reacting; then adding polyamide fiber to the mixture B to form a mixture C; stirring at a constant temperature; and obtaining the pretreated terpene phenol resin mixture after the reaction is completed.

[0027] By adopting the above technical solution, the active hydroxyl groups or alumina groups on the surface of aluminum silicate react with the hydroxyl and carboxyl groups in the terpene phenol resin to form covalent bonds or coordination bonds, which improves the surface characteristics of the terpene phenol resin molecular chain. This results in the formation of a uniform coating layer of terpene phenol resin on the surface of aluminum silicate, thereby increasing its dispersibility and stability in the system. In addition, polyamide fibers are used to improve the ductility of the terpene phenol resin and enable it to better combine with polytetrafluoroethylene and sodium sulfide. This allows the terpene phenol resin to better adhere to the substrate and polytetrafluoroethylene, thereby further enhancing the adsorption effect between nickel and iron ions in the solution and the polytetrafluoroethylene molecular chain. This achieves the goal of further improving the anti-fingerprint, wear-resistant, and corrosion-resistant properties of the anti-fingerprint protective film layer.

[0028] Optionally, the molar concentration of the aluminum silicate in the solvent is 0.45–0.6 mol / L, the molar concentration of the aminomethyltrimethoxysilane in the solvent is 0.3–0.5 mol / L, and the weight ratio of the polyamide fiber to the terpene phenol resin is 1.5:1.

[0029] Optionally, the degree of polymerization of the polyamide fiber is 850.

[0030] By adopting the above technical solutions, adjusting the aluminum silicate to a suitable molar concentration or selecting polyamide fibers with a suitable degree of polymerization, both can better interact with the molecular chain surface of the terpene phenol resin. This improves the compatibility of the terpene phenol resin molecular chain surface with polytetrafluoroethylene and sodium sulfide in the solution, while enhancing the dispersibility of sodium sulfide. This allows sodium sulfide to better fill the gaps between metallic nickel and iron ions and the polytetrafluoroethylene molecular chains, thereby improving the deposition stability of metallic nickel and iron ions on the surface of the polytetrafluoroethylene molecular chains in the solution.

[0031] Secondly, the method of using an anti-fingerprint protectant provided in this application adopts the following technical solution:

[0032] A method of using an anti-fingerprint protectant includes the following steps:

[0033] Pre-formulate the anti-fingerprint protectant according to the weight ratio;

[0034] The surface-treated substrate is immersed in the pre-prepared anti-fingerprint protectant, then removed, left to stand, and baked to form an anti-fingerprint film on the substrate.

[0035] By adopting the above technical solution, terpene phenol resin, sodium sulfide and polytetrafluoroethylene can be compounded to form an anti-fingerprint protectant that is uniformly and stably bonded to the substrate surface. This allows the nickel and iron ions in the anti-fingerprint protectant to be uniformly dispersed on the polytetrafluoroethylene molecular chain, thereby effectively improving the coverage stability of the anti-fingerprint protectant on the substrate surface.

[0036] In summary, this application has the following beneficial effects:

[0037] 1. This application utilizes the compounding effect between polytetrafluoroethylene, terpene phenolic resin, and sodium sulfide to generate a further synergistic effect with nickel sulfate, nickel chloride, and ferrous sulfate. This improves the uniformity of the anti-fingerprint agent on the substrate surface and enhances its adhesion to automotive interior parts substrates. While maintaining the bright metallic appearance of the substrate, it also exhibits good anti-fingerprint properties, corrosion resistance, and wear resistance, thereby extending the service life of automotive interior parts. 2. This application reacts the active hydroxyl groups or alumina groups on the surface of aluminum silicate with the hydroxyl and carboxyl groups and other functional groups in the terpene phenolic resin to form covalent... The bonding or coordination bonds improve the surface properties of the terpene phenol resin molecular chain, enabling the terpene phenol resin to form a uniform coating layer on the aluminum silicate surface, thereby increasing its dispersibility and stability in the system. In addition, the extensibility of the terpene phenol resin is improved by using polyamide fibers, and the terpene phenol resin can better combine with polytetrafluoroethylene and sodium sulfide, allowing the terpene phenol resin to better adhere between the substrate and polytetrafluoroethylene. This further enhances the adsorption effect between metallic nickel and iron ions in the solution and the polytetrafluoroethylene molecular chain, thereby further improving the anti-fingerprint protective film layer's anti-fingerprint, wear-resistant, and corrosion-resistant properties. Detailed Implementation

[0038] The present application will be further described in detail below with reference to preparation examples, embodiments, comparative examples and application examples.

[0039] Preparation Example 1

[0040] Preparation method of pretreated modified terpene phenol resin:

[0041] Weigh 0.92 kg of aluminum silicate and 0.6 kg of aminomethyltrimethoxysilane according to the weight ratio and add them to 10 L of 95% ethanol solvent. Heat to 60 °C and stir to mix evenly to obtain mixture A.

[0042] Weigh 0.35 kg of terpene phenol resin according to the weight ratio and add it to mixture A. Heat to 200℃ and stir until homogeneous to obtain mixture B.

[0043] Weigh 0.7 kg of polyamide fiber according to the weight ratio and add it to the mixture B. Heat to 240°C and stir. After the reaction is completed, a pretreated terpene phenol resin mixture is obtained.

[0044] Preparation Example 2

[0045] Preparation method of pretreated modified terpene phenol resin:

[0046] Weigh 0.84 kg of aluminum silicate and 0.3 kg of aminomethyltrimethoxysilane according to the weight ratio and add them to 10 L of 95% ethanol solvent. Heat to 60 °C and stir to mix evenly to obtain mixture A.

[0047] Weigh 0.35 kg of terpene phenol resin according to the weight ratio and add it to mixture A. Heat to 200℃ and stir until homogeneous to obtain mixture B.

[0048] Weigh 0.525 kg of polyamide fiber according to the weight ratio and add it to the mixture B. Heat to 240°C and stir. After the reaction is completed, a pretreated terpene phenol resin mixture is obtained.

[0049] Preparation Example 3

[0050] Preparation method of pretreated modified terpene phenol resin:

[0051] Weigh 0.63 kg of aluminum silicate and 0.5 kg of aminomethyltrimethoxysilane according to the weight ratio and add them to 10 L of 95% ethanol solvent. Heat to 60 °C and stir to mix evenly to obtain mixture A.

[0052] Weigh 0.35 kg of terpene phenol resin according to the weight ratio and add it to mixture A. Heat to 200℃ and stir until homogeneous to obtain mixture B.

[0053] Weigh 0.525 kg of polyamide fiber according to the weight ratio and add it to the mixture B. Heat to 240°C and stir. After the reaction is completed, a pretreated terpene phenol resin mixture is obtained.

[0054] Example 1

[0055] An anti-fingerprint protectant is prepared by the following steps:

[0056] Step 1): Weigh out 1.4 kg of nickel sulfate, 0.3 kg of nickel chloride and 0.16 kg of ferrous sulfate according to the weight ratio, add them to 10 L of deionized water, stir and mix evenly to form solution 1;

[0057] Step 2): Weigh 1.1 kg of polytetrafluoroethylene, 0.15 kg of terpene phenol resin, 0.23 kg of sodium sulfide and 0.6 kg of fatty alcohol polyoxyethylene ether according to the weight ratio and add them to the solvent. Heat to 200℃ and stir and mix evenly at a constant temperature to form solution 2.

[0058] Step 3): After mixing Solution 1 and Solution 2 evenly, add 0.012 kg mercaptoethanol, 0.07 kg sodium bicarbonate and 0.15 kg sodium hydroxide by weight. Then filter through a 300-mesh filter and let stand to prepare the anti-fingerprint protectant.

[0059] The terpene phenol resin has a viscosity of 800 mPa·s, the sodium sulfide is cubic sodium sulfide, and the degree of polymerization of polytetrafluoroethylene is 2500.

[0060] Example 2

[0061] Step 1): Weigh out 0.7 kg of nickel sulfate, 0.7 kg of nickel chloride, and 0.22 kg of ferrous sulfate according to the weight ratio, add them to 10 L of deionized water, stir and mix evenly to form solution 1;

[0062] Step 2): Weigh 1.4 kg of polytetrafluoroethylene, 0.35 kg of terpene phenol resin, 0.36 kg of sodium sulfide and 0.3 kg of fatty alcohol polyoxyethylene ether according to the weight ratio and add them to the solvent. Heat to 200℃ and stir and mix evenly at a constant temperature to form solution 2.

[0063] Step 3): Mix solution 1 and solution 2 thoroughly, then add 0.006 kg mercaptoethanol, 0.13 kg sodium bicarbonate and 0.35 kg sodium hydroxide by weight. Filter the mixture through a 300-mesh filter and allow it to stand to obtain the anti-fingerprint protectant.

[0064] The terpene phenol resin has a viscosity of 800 mPa·s, the sodium sulfide is cubic sodium sulfide, and the degree of polymerization of polytetrafluoroethylene is 2500.

[0065] Example 3

[0066] An anti-fingerprint protectant, which differs from Example 2 in that the viscosity of the terpene phenol resin is 600 mPa·s.

[0067] Example 4

[0068] An anti-fingerprint protectant, which differs from Example 2 in that the sodium sulfide is monoclinic sodium sulfide.

[0069] Example 5

[0070] An anti-fingerprint protectant, which differs from Example 3 in that the degree of polymerization of polytetrafluoroethylene is 3500.

[0071] Example 6

[0072] An anti-fingerprint protectant, which differs from Example 5 in that mercaptoethanol is replaced with mercaptoacetic acid.

[0073] Example 7

[0074] An anti-fingerprint protectant, which differs from Example 5 in that mercaptoethanol is replaced with mercaptoethanol and mercaptoacetic acid, wherein mercaptoethanol and mercaptoacetic acid are used in a 1:1 ratio.

[0075] Example 8

[0076] An anti-fingerprint protectant, which differs from Example 5 in that sodium bicarbonate is replaced with disodium hydrogen phosphate.

[0077] Example 9

[0078] An anti-fingerprint protectant, which differs from Example 5 in that sodium bicarbonate is replaced with disodium hydrogen phosphate and sodium bicarbonate, wherein disodium hydrogen phosphate and sodium bicarbonate are used in a 1:1 ratio.

[0079] Example 10

[0080] An anti-fingerprint protectant, which differs from Example 5 in that the terpene phenol resin is the pretreated modified terpene phenol resin mixture obtained in Preparation Example 1.

[0081] Example 11

[0082] An anti-fingerprint protectant, which differs from Example 5 in that the terpene phenol resin is the pretreated modified terpene phenol resin mixture obtained in Preparation Example 2.

[0083] Example 12

[0084] An anti-fingerprint protectant, which differs from Example 5 in that the terpene phenol resin is the pretreated modified terpene phenol resin mixture obtained in Preparation Example 3.

[0085] Comparative Example 1

[0086] The difference between this comparative example and Example 1 is that the terpene phenol resin is replaced with an equal amount of water.

[0087] Comparative Example 2

[0088] The difference between this comparative example and Example 1 is that sodium sulfide is replaced with an equal amount of water.

[0089] Comparative Example 3

[0090] The difference between this comparative example and Example 1 is that both the terpene phenol resin and sodium sulfide are replaced with an equal amount of water.

[0091] Application Example 1-15

[0092] A method for using an anti-fingerprint protectant: A substrate that has undergone surface washing and degreasing treatment is immersed in the anti-fingerprint protectant prepared in Examples 1-12 and Comparative Examples 1-3 for 30 seconds, then removed and allowed to stand. The substrate is then baked at 60°C for 30 minutes, ultimately forming an anti-fingerprint film on the substrate surface. The substrate can be selected from automotive aluminum alloy, stainless steel, or magnesium alloy interior trim parts.

[0093] Performance testing

[0094] 1) Thickness test

[0095] The substrate from Application Examples 1-15 is cut to a volume of 5 cm³. 3 The samples were placed in an ellipsometry for thickness measurement. The smaller the variation in the thickness of the anti-fingerprint film at multiple locations in the sample, the better the uniformity of the anti-fingerprint film formed on the substrate surface. A uniform thickness distribution of the anti-fingerprint film was recorded as "excellent", while an uneven thickness distribution was recorded as "poor".

[0096] 2) Abrasion resistance test

[0097] The substrate from Application Examples 1-15 is cut to a volume of 5 cm³. 3 The sample was then tested using an MCJ-01 scratch resistance tester (provided by Jinan Great Test Instrument Co., Ltd.). Under an initial load of 1N, the sample surface prepared in Application Examples 1-15 was rubbed at a speed of 10mm / second. The force was increased by 1N every second until scratches appeared on the surface of the test piece. The needle load value (N) at this time was recorded. The larger the needle load value, the better the wear resistance of the anti-fingerprint film.

[0098] 3) Corrosion resistance test

[0099] The substrate from Application Examples 1-15 is cut to a volume of 5 cm³. 3The thickness of the sample was measured at multiple locations using an ellipsometer, and the average value was recorded as a1. The sample was then immersed in 8% dilute sulfuric acid for 24 hours. After removal, the thickness of the sample at multiple locations was measured again using an ellipsometer, and the average value was recorded as a2. The thickness difference (nm) of multiple samples before and after immersion a1-a2 was calculated. The smaller the thickness difference, the better the corrosion resistance and fingerprint resistance of the anti-fingerprint film formed on the substrate surface.

[0100] Table 1 - Summary of Detection Data from Application Example 1-15

[0101]

[0102]

[0103] According to the comparison of the test data of Application Example 1 and Application Example 15 in Table 1, the anti-fingerprint film layer of the automotive interior parts substrate prepared according to the technical solution of this application has a significant improvement in wear resistance, corrosion resistance and anti-fingerprint performance compared with the existing anti-fingerprint film layer of automotive interior parts substrate without the addition of terpene phenol resin, sodium sulfide and polytetrafluoroethylene. Moreover, it effectively optimizes the various properties of the existing automotive metal interior parts substrate without the need for high temperature, and can also effectively improve the thickness uniformity of the anti-fingerprint film layer of the substrate, thereby extending the service life of the automotive interior parts substrate of this application.

[0104] Furthermore, by comparing the experimental data of Application Example 1 and Application Examples 13-15, it can be seen that if the synergistic effect of terpene phenol resin, sodium sulfide and polytetrafluoroethylene is disrupted in the system, the wear resistance, corrosion resistance and fingerprint resistance of the prepared anti-fingerprint film layer of the automotive metal interior part substrate, as well as the uniformity of the anti-fingerprint film layer, will decrease to varying degrees. This indicates that all three are indispensable in the anti-fingerprint protective agent of the technical solution of this application. Thus, it can be concluded that the prerequisite for improving the performance of the anti-fingerprint film layer of the automotive metal interior part substrate of this application is the synergistic effect of the three to obtain a more effective synergistic effect on the anti-fingerprint film layer of the automotive metal interior part substrate.

[0105] According to the comparison of the test data of Application Examples 1-2 in Table 1, it can be seen that when the inventor controls the weight ratio of terpene phenol resin, sodium sulfide and polytetrafluoroethylene in the electroplating solution, the wear resistance, corrosion resistance and anti-fingerprint performance of the anti-fingerprint film layer of the silicon chip automotive metal interior part substrate of this application can be better improved, thereby achieving the purpose of further improving the service life of the automotive metal interior part substrate of this application.

[0106] According to the comparison of the test data of Application Examples 2-5 in Table 1, when the inventor selects terpene phenol resin, sodium sulfide and polytetrafluoroethylene with specific material properties or structural forms for addition, the friction resistance of the anti-fingerprint film layer of the automotive metal interior parts substrate of this application can be further enhanced, and the thickness difference before and after corrosion can be reduced more effectively, thereby improving the service life and application range of the automotive metal interior parts substrate of this application.

[0107] According to the comparison of the test data of Application Examples 5-9 in Table 1, when the inventors select specific types of light-reflecting agents and stabilizers for addition, it can be clearly seen that the anti-fingerprint film layer of the automotive metal interior parts substrate of this application is significantly enhanced in terms of wear resistance, corrosion resistance and anti-fingerprint performance. This allows the automotive metal interior parts substrate prepared by this application to be further improved in terms of service life and application scope, and has great economic value.

[0108] According to the comparison of the test data of Application Examples 5 and 10 in Table 1, when the inventors selected pretreated modified terpene phenol resin for addition, the anti-fingerprint film layer of the automotive metal interior part substrate in this application was greatly enhanced in terms of wear resistance, corrosion resistance and anti-fingerprint performance. This indicates that the surface characteristics of the modified terpene phenol resin molecular chain were effectively improved, so that the terpene phenol resin could better produce a synergistic effect with polytetrafluoroethylene and sodium sulfide.

[0109] According to the comparison of the test data of Application Examples 5 and 10-12 in Table 1, it can be seen that when the inventors select aluminum silicate with a specific molar concentration and aminomethyltrimethoxysilane, and polyamide fiber with a specific weight ratio to limit and change the pretreatment conditions, the wear resistance of the anti-fingerprint film layer of the automotive metal interior parts substrate of this application can be enhanced to a greater extent. At the same time, the corrosion resistance and anti-fingerprint performance of the anti-fingerprint film layer of the automotive metal interior parts substrate of this application can also be better improved. Thus, the automotive metal interior parts substrate of this application can be adapted to use under more working conditions, thereby improving the service life and application range of existing automotive metal interior parts.

[0110] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. An anti-fingerprint protective agent characterized in that, It is made from the following raw material components in parts by weight: Nickel sulfate: 7 to 14 parts; Nickel chloride: 3 to 7 parts; Ferrous sulfate: 1.6 parts to 2.2 parts; Polytetrafluoroethylene: 11 to 14 parts; Nonionic surfactant: 3 to 6 parts; Main light-reflecting agent: 0.06~0.12 parts; Auxiliary light agent: 0.7~1.3 parts; Stabilizer: 1.5 to 2.3 parts; Terpene phenol resin: 1.5 parts to 3.5 parts; Sodium sulfide: 2.3~3.6 parts.

2. The anti-fingerprint protectant according to claim 1, characterized in that, The viscosity of the terpene phenol resin is 600 mPa·s.

3. The anti-fingerprint protectant according to claim 1, characterized in that, The sodium sulfide is monoclinic sodium sulfide.

4. The anti-fingerprint protectant according to any one of claims 2-3, characterized in that, The degree of polymerization of the polytetrafluoroethylene is 3500.

5. The anti-fingerprint protectant according to claim 4, characterized in that, The primary light-emitting agent is one or both of mercaptoethanol and mercaptoacetic acid.

6. The anti-fingerprint protectant according to claim 4, characterized in that, The auxiliary light-emitting agent is one or both of disodium hydrogen phosphate and sodium bicarbonate.

7. The anti-fingerprint protectant according to claim 4, characterized in that, The terpene phenol resin is a pretreated and modified terpene phenol resin. The pretreatment and modification steps include: adding aluminum silicate and aminomethyltrimethoxysilane to a solvent, heating and stirring, mixing evenly to obtain a mixture A, adding the terpene phenol resin to be pretreated and modified to mixture A to form a mixture B, heating and reacting, then adding polyamide fiber to mixture B to form a mixture C, heating and stirring, and after the reaction is completed, a pretreated and modified terpene phenol resin mixture is obtained.

8. The anti-fingerprint protectant according to claim 7, characterized in that, The molar concentration of the aluminum silicate in the solvent is 0.45~0.6 mol / L, the molar concentration of the aminomethyltrimethoxysilane in the solvent is 0.3~0.5 mol / L, and the weight ratio of the polyamide fiber to the terpene phenol resin to be pretreated is 1.5:

1.

9. The anti-fingerprint protectant according to claim 7, characterized in that, The degree of polymerization of the polyamide fiber is 850.

10. A method of using an anti-fingerprint protectant according to any one of claims 1-9, characterized in that, Includes the following steps: Pre-formulate the anti-fingerprint protectant according to the weight ratio; The surface-treated substrate is immersed in the pre-prepared anti-fingerprint protectant, then removed, left to stand, and baked to form an anti-fingerprint film on the substrate.

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