A light-enhancing and hardness-increasing home-use crystal plating agent

Abstract

The present invention relates to the technical field of plating crystal additives, and particularly relates to a light-enhancing and hardness-increasing home-use plating crystal agent. The light-enhancing and hardness-increasing home-use plating crystal agent is composed of the following raw materials in parts by weight: 30-60 parts by weight of organosilicon resin, 3-8 parts by weight of hydrogenated rosin resin, 30-70 parts by weight of solvent, 0.5-2 parts by weight of dispersant, 0.5-2 parts by weight of lubricant, 0.3-1 part by weight of leveling agent, 2-5 parts by weight of coupling agent, and 5-12 parts by weight of light-enhancing and hardness-increasing additive. By adding the light-enhancing and hardness-increasing additive, the present invention can enable the home-use plating crystal agent to have good light-enhancing and hardness-increasing effects, improve the aesthetic feeling and service life of furniture, has a simple preparation method and low production cost, and can be widely applied to furniture.

Description

Technical Field

[0001] The present invention relates to the technical field of crystal plating additives, and particularly to a light-enhancing and hardness-enhancing crystal plating agent for household use. Background Art

[0002] With the increasing requirements of consumers for the aesthetics and durability of household products, the surface treatment technology of household items has become a research hotspot in the chemical industry. As an advanced surface treatment material, the light-enhancing and hardness-enhancing crystal plating agent for household use aims to form a protective film on the surface of household products to enhance the gloss and hardness of the products, thereby improving the overall performance and market competitiveness of the products.

[0003] Traditional surface treatment methods for household products, such as painting and electroplating, although can improve the aesthetics of products to a certain extent, often have problems such as environmental pollution, complex operation, and high cost. In addition, the performance of products treated by these traditional methods in terms of wear resistance and scratch resistance is not ideal enough. Therefore, the market's demand for an environmentally friendly, economical, and efficient surface treatment technology for household products is becoming increasingly urgent.

[0004] The emergence of the light-enhancing and hardness-enhancing crystal plating agent for household use is precisely to solve the above problems. This kind of crystal plating agent is usually composed of environmentally friendly resins, hardeners, brighteners and other components, and can form a transparent and hard protective layer on the surface of household products, which not only improves the gloss of the products, but also significantly enhances the physical properties such as wear resistance and scratch resistance of the products. Compared with traditional surface treatment technologies, the process of using the light-enhancing and hardness-enhancing crystal plating agent is simpler, the cost is lower, and the environmental friendliness is better.

[0005] With the development of nanotechnology and new materials, the performance of the light-enhancing and hardness-enhancing crystal plating agent for household use has been further improved. For example, by adding nano-particles, the hardness and scratch resistance of the protective layer can be further improved; by using specific polymers, the adhesion and durability of the protective layer can be improved. The progress of these technologies has enabled the light-enhancing and hardness-enhancing crystal plating agent for household use to be widely used in the fields of home decoration, furniture manufacturing, floor treatment, etc. The technological development of the light-enhancing and hardness-enhancing crystal plating agent for household use not only meets the market's demand for improving the quality of household products, but also provides a new growth point for the chemical industry. With the continuous progress and innovation of technology, it is expected that the light-enhancing and hardness-enhancing crystal plating agent for household use will play a more important role in the surface treatment of household products in the future.

[0006] Chinese invention patent CN117946587B discloses a crystal plating agent for automotive paint surfaces and its preparation method, including the following raw materials in parts by weight: 10 - 15 parts of polysilazane, 8 - 12 parts of flaky talc powder for adjusting fiberglass agent, 6 - 10 parts of modified glass microspheres, 35 - 45 parts of toluene, 1 - 3 parts of lanthanum chloride solution, 1 - 2 parts of glycolic acid, and 2 - 4 parts of silane coupling agent. The crystal plating agent prepared by this invention is mainly applied to the paint surfaces of automobiles, and mainly improves the reflective performance of the product. However, the present invention provides a crystal plating agent for household use, expanding the application scope and functional effects of the crystal plating agent. Summary of the Invention

[0007] In view of the deficiencies in the above-mentioned prior art, the present invention provides a light - enhancing and hardness - enhancing crystal plating agent for household use.

[0008] To solve the above - mentioned technical problems, the technical solution adopted by the present invention is:

[0009] A light - enhancing and hardness - enhancing crystal plating agent for household use, characterized by being composed of the following raw materials in parts by weight: 30 - 60 parts by weight of organosilicon resin, 3 - 8 parts by weight of hydrogenated rosin resin, 30 - 70 parts by weight of solvent, 0.5 - 2 parts by weight of dispersant, 0.5 - 2 parts by weight of lubricant, 0.3 - 1 part by weight of leveling agent, 2 - 5 parts by weight of coupling agent, and 5 - 12 parts by weight of light - enhancing and hardness - enhancing additive.

[0010] The solvent is at least one of ethyl acetate, N,N - dimethylformamide, acetone, toluene, cyclohexane, methylcyclohexane, and tetrahydrofuran.

[0011] The dispersant is at least one of acrylic block copolymer, Tween - 60, octylphenol polyoxyethylene ether, and fatty acid monoethanolamide.

[0012] The lubricant is at least one of stearic acid, glycerol monostearate, and polyethylene wax.

[0013] The leveling agent is at least one of polyurethane leveling agent and organosilicon leveling agent.

[0014] The coupling agent is at least one of silane coupling agent, aluminate coupling agent, and titanate coupling agent.

[0015] Carbon nanotubes have more obvious advantages in terms of mechanical properties, thermal stability, chemical stability and inertness, and hydrophobicity, and have great potential in improving the compactness of coatings, maintaining chemical stability and mechanical properties, and enhancing hardness. However, due to the extremely easy agglomeration of carbon nanotubes and the weak interaction between them and the solvent or polymer matrix, it is very difficult to disperse carbon nanotubes, which severely limits the application and development of carbon nanotubes in the coating field. However, different types of functional groups, such as hydroxyl groups, carboxyl groups, amino groups, etc., can be introduced onto their surfaces through chemical modification methods, and carbon nanotubes can be uniformly dispersed into the coating by functionalization or modification methods to enhance the comprehensive performance of the coating.

[0016] Acrylic polymers can be used as brightening agents to improve the durability, water resistance, adhesion, glossiness, etc. of the furniture surface. Compared with other brightening agents, acrylic polymers, as functional additives for furniture crystal plating agents, have significant advantages in terms of gloss, adhesion, stain resistance, etc., and can be applied to multiple fields such as automobiles, furniture, and electronic products to provide long-lasting gloss and protection.

[0017] The present invention combines acrylic polymers with modified carbon nanotube composites and uses them in the formula system of furniture crystal plating agents. The acrylic polymers in the brightening and hardening additives can provide glossiness, making the surface of household items more shiny and enhancing the visual aesthetic. At the same time, the interaction between the acrylate prepolymer and the surface of household items is enhanced, improving the adhesion of the crystal plating layer and ensuring that the crystal plating layer is not easily peeled off; the addition of modified carbon nanotubes enhances the interaction with the main materials, strengthens the cohesion of the crystal plating agent and the interaction and combination with other components, and can be better dispersed and distributed in the crystal plating agent, making the crystal plating agent more uniform and stable, thereby improving the hardness and wear resistance of the crystal plating agent, protecting the surface of household items from scratches and abrasions, and extending the service life; the two complement each other in function and enhance each other's effects, and they work synergistically. Therefore, the combined use of the two not only effectively improves the glossiness of the furniture surface, but also can effectively improve the hardness of the furniture surface, protecting the furniture for a long time during use. It expands the application of the brightening and hardening additives in brightening and hardening type household crystal plating agents, not only improving the performance and aesthetics of the product, but also possibly reducing costs and environmental impacts, achieving synergistic effects in multiple technical aspects.

[0018] The preparation method of the brightening and hardening additive includes the following steps:

[0019] S1. Immerse carbon nanotubes in a nitric acid solution and stir to obtain pretreated carbon nanotubes; take the pretreated carbon nanotubes and mix them with an ethanol aqueous solution, ultrasonically disperse them, add perfluoropolyether siloxane, and continue ultrasonically dispersing to obtain modified carbon nanotubes;

[0020] S2 Mix ethyl methacrylate, methacrylic acid, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 1,2-epoxy-7-octene, 2-hydroxyethyl methacrylate and toluene, add azobisisobutyronitrile and heat with stirring to obtain an acrylate prepolymer;

[0021] S3 Mix the modified carbon nanotubes and an ethanol aqueous solution, disperse them by ultrasonic treatment, add the above acrylate prepolymer, and heat for reaction to obtain a light-enhancing and hardness-enhancing additive.

[0022] Specific reaction mechanism: In S1, carbon nanotubes are used as raw materials and pretreated with nitric acid. Increasing surface functional groups (such as -COOH and -OH) helps improve the surface activity and dispersibility of CNTs, and ultrasonic waves enhance their dispersibility in solvents; then perfluoropolyether siloxane used as a surface modifier is added, and its interaction with the surface of CNTs further improves the dispersibility of CNTs and provides hydrophobicity or specific surface properties; in S2, monomers such as ethyl methacrylate, methacrylic acid, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 1,2-epoxy-7-octene and 2-hydroxyethyl methacrylate are used as reaction raw materials, and toluene is used as a solvent to form a reaction system. Azobisisobutyronitrile is used as a radical initiator to initiate the polymerization reaction of monomers under heating conditions to form an acrylate prepolymer; in S3, the modified carbon nanotubes and the acrylate prepolymer are used as reaction raw materials for mixing, and are dispersed by ultrasonic treatment. Under certain temperature and stirring conditions, the modified carbon nanotubes and the prepolymer undergo a curing reaction to form a stable light-enhancing and hardness-enhancing additive.

[0023] The light-enhancing and hardness-enhancing additive prepared by the present invention can be effectively and uniformly mixed when added to the original materials of the light-enhancing and hardness-enhancing home-use crystal plating agent. The bridging structure formed by the perfluoropolyether-modified carbon nanotubes and the acrylic polymer on the surface of the carbon nanotubes enhances the light-enhancing performance and impact resistance of the home-use crystal plating agent. At the same time, the surface-modified carbon nanotubes are uniformly distributed in the home-use crystal plating agent through the principle of similar compatibility, providing a more uniform light-enhancing and hardness-enhancing effect, and improving the comprehensive performance of the home-use crystal plating agent.

[0024] Preferably, the preparation method of the light-enhancing and hardness-enhancing additive includes the following steps:

[0025] S1. Immerse carbon nanotubes in a 0.5 - 1.5 mol / L nitric acid solution, stir at 400 - 800 rpm for 4 - 10 h, centrifuge, wash, and dry to obtain pretreated carbon nanotubes; Take 8 - 12 parts by weight of the pretreated carbon nanotubes and mix them with 200 - 300 parts by weight of a 50 - 70 wt% ethanol aqueous solution, disperse for 0.5 - 2 h under an ultrasonic power of 200 - 400 W and an ultrasonic frequency of 25 - 60 KHz, add 4 - 8 parts by weight of perfluoropolyether siloxane, and continue ultrasonic dispersion for 0.5 - 2 h; Filter by suction, wash, and dry to obtain modified carbon nanotubes;

[0026] S2. Mix 10 - 20 parts by weight of ethyl methacrylate, 10 - 20 parts by weight of methacrylic acid, 2 - 4 parts by weight of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 1 - 3 parts by weight of 1,2-epoxy-7-octene, 1 - 3 parts by weight of 2-hydroxyethyl methacrylate, and 80 - 200 parts by weight of toluene, add 0.3 - 1 part by weight of azobisisobutyronitrile and stir for 10 - 30 min, react at 85 - 110 °C and 300 - 500 rpm for 3 - 6 h to obtain an acrylate prepolymer;

[0027] S3. Mix 5 - 10 parts by weight of the modified carbon nanotubes and 50 - 140 parts by weight of a 60 - 80 wt% ethanol aqueous solution, disperse for 1 - 4 h under an ultrasonic power of 200 - 400 W and an ultrasonic frequency of 25 - 60 KHz, add 20 - 50 parts by weight of the above acrylate prepolymer, react at 65 - 80 °C and 400 - 800 rpm for 2 - 5 h, filter by suction, wash, and freeze-dry to obtain a light and hardness enhancing additive.

[0028] The preparation method of the perfluoropolyether siloxane is as follows: Take 15 - 30 parts by weight of ether and 2 - 6 parts by weight of hexamethylene diisocyanate and stir evenly, then add 16 - 28 parts by weight of hydroxyl-terminated perfluoropolyether and 2 - 6 parts by weight of diethylenetriaminepropyltrimethoxysilane, stir at 30 - 40 °C and 300 - 500 rpm for 6 - 16 h, then add 3.5 - 5 parts by weight of γ-glycidoxypropyltrimethoxysilane, and continue the reaction for 4 - 8 h, distill off the solvent under reduced pressure to obtain perfluoropolyether alkoxysilane.

[0029] The perfluoropolyether siloxane-modified carbon nanotubes used in the present invention have better effects than those simply modified with siloxane. The reasons are as follows: (1) Perfluoropolyether siloxane has unique surface properties, which can form a uniform film on the surface of carbon nanotubes, reduce the surface energy of carbon nanotubes, reduce the agglomeration phenomenon, further improve the dispersibility of carbon nanotubes and the compatibility with the matrix, thereby improving the overall properties such as the uniformity and smoothness of the crystal plating agent; (2) The hydrophobicity and lipophobicity of perfluoropolyether siloxane are better than those of ordinary siloxane, and it also has better gloss and transparency. This characteristic helps to improve the pollution resistance and optical properties of the crystal plating layer, which is an important performance index for household products; (3) The carbon nanotubes modified with perfluoropolyether siloxane can form a stronger interfacial bond with the matrix, thereby improving the mechanical strength and wear resistance of the crystal plating layer.

[0030] The preparation method of the light-enhancing and hardness-increasing type household crystal plating agent includes the following steps: Weigh each raw material by weight parts, and stir and mix the organosilicon resin, hydrogenated rosin resin, solvent, dispersant, lubricant, leveling agent, coupling agent, and light-enhancing and hardness-increasing additive evenly to obtain the light-enhancing and hardness-increasing type household crystal plating agent.

[0031] The beneficial effects of the present invention are as follows: 1. The present invention provides a light-enhancing and hardness-increasing type household crystal plating agent, the preparation method of which is simple and the production cost is low. The obtained household crystal plating agent has good light-enhancing and hardness-increasing effects, improving the aesthetic feeling and service life of furniture.

[0032] 2. The present invention adds a light-enhancing and hardness-increasing type additive in the raw material formulation process. The light-enhancing and hardness-increasing additive prepared by the present invention can be effectively and evenly mixed with the original materials. The bridging structure formed by the perfluoropolyether-modified carbon nanotubes and the acrylic polymer on the surface of the carbon nanotubes enhances the light-enhancing performance and impact resistance of the household crystal plating agent. At the same time, the surface-modified carbon nanotubes are evenly distributed in the household crystal plating agent through the principle of similar compatibility, providing a more uniform light-enhancing and hardness-increasing effect, and improving the comprehensive performance of the household crystal plating agent. Specific embodiments

[0033] The above-mentioned invention content of the present invention will be further described in detail below in conjunction with specific embodiments, but this should not be understood that the scope of the above-mentioned subject matter of the present invention is limited to the following embodiments.

[0034] Introduction of some raw materials in this application:

[0035] The organosilicon resin is purchased from Jining Tangyi Chemical Co., Ltd., and the model is YHY-2200.

[0036] The hydrogenated rosin resin is purchased from Shandong Haoyao New Materials Co., Ltd., and the model is HY1269.

[0037] Octylphenol polyoxyethylene ether was purchased from Hai'an Petrochemical Factory in Jiangsu Province, with the model OP13.

[0038] Polyethylene wax was purchased from Unicar (Shanghai) International Trade Co., Ltd., with a viscosity of 8000 mPa·s (160 °C).

[0039] Polydimethylsiloxane was purchased from Shenzhen Jipeng Silicon Fluoride Materials Co., Ltd., with the model: 209 and a hydroxyl content of 10%.

[0040] Carbon nanotubes were purchased from Zhangmutou Hongyun Plastic Raw Materials Business Department in Dongguan City, with the brand PS6050.

[0041] Hydroxyl-terminated perfluoropolyether was purchased from Wuhan Lanabai Pharmaceutical and Chemical Co., Ltd., with the product number lnb-162.

[0042] Example 1

[0043] A light-enhancing and hardness-increasing home crystal coating agent is composed of the following raw materials in parts by weight: 40 parts by weight of organosilicon resin, 5 parts by weight of hydrogenated rosin resin, 40 parts by weight of ethyl acetate, 1 part by weight of octylphenol polyoxyethylene ether, 1 part by weight of polyethylene wax, 0.5 part by weight of polydimethylsiloxane, 3 parts by weight of 3-(methacryloyloxy)propyltrimethoxysilane, and 8 parts by weight of light-enhancing and hardness-increasing additive.

[0044] The preparation method of the light-enhancing and hardness-increasing additive includes the following steps:

[0045] S1. Immerse carbon nanotubes in a 1.0 mol / L nitric acid solution, stir at 600 rpm for 6 h, centrifuge, wash, and dry to obtain pretreated carbon nanotubes; take 10 parts by weight of pretreated carbon nanotubes and mix them with 240 parts by weight of a 60 wt% ethanol aqueous solution, disperse them at a ultrasonic power of 300 W and a ultrasonic frequency of 40 KHz for 1 h, add 6 parts by weight of perfluoropolyether siloxane, and continue ultrasonic dispersion for 1 h; filter by suction, wash, and dry to obtain modified carbon nanotubes;

[0046] S2. Mix 15 parts by weight of ethyl methacrylate, 15 parts by weight of methacrylic acid, 2.5 parts by weight of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 2 parts by weight of 1,2-epoxy-7-octene, 2 parts by weight of 2-hydroxyethyl methacrylate, and 120 parts by weight of toluene, add 0.5 part by weight of azobisisobutyronitrile and stir for 20 min, and react at 100 °C and 400 rpm for 4 h to obtain an acrylate prepolymer;

[0047] S3 mixes 8 parts by weight of modified carbon nanotubes and 80 parts by weight of a 70 wt% ethanol aqueous solution, disperses them for 2 h at an ultrasonic power of 300 W and an ultrasonic frequency of 40 KHz, adds 30 parts by weight of the above acrylate prepolymer, reacts at 70 °C and 600 rpm for 3 h, filters by suction, washes, and freeze-dries to obtain a light-enhancing and hardness-enhancing additive.

[0048] The preparation method of the perfluoropolyether siloxane is as follows: Take 20 parts by weight of ether and 4 parts by weight of hexamethylene diisocyanate, stir evenly, then add 20 parts by weight of hydroxyl-terminated perfluoropolyether and 4 parts by weight of divinyltriaminopropyltrimethoxysilane, stir at 35 °C and 400 rpm for 10 h, then add 4.2 parts by weight of γ-glycidyletheroxypropyltrimethoxysilane, and continue to react for 6 h. Distill off the solvent under reduced pressure to obtain perfluoropolyether alkoxysilane.

[0049] The preparation method of the light-enhancing and hardness-enhancing home crystal plating agent is as follows: Weigh each raw material by parts by weight, and stir and mix evenly the organosilicon resin, hydrogenated rosin resin, ethyl acetate, octylphenol polyoxyethylene ether, polyethylene wax, polydimethylsiloxane, 3-(methacryloyloxy)propyltrimethoxysilane, and the light-enhancing and hardness-enhancing additive to obtain the light-enhancing and hardness-enhancing home crystal plating agent.

[0050] Example 2

[0051] A light-enhancing and hardness-enhancing home crystal plating agent is composed of the following raw materials by parts by weight: 30 parts by weight of organosilicon resin, 3 parts by weight of hydrogenated rosin resin, 30 parts by weight of ethyl acetate, 0.5 part by weight of octylphenol polyoxyethylene ether, 0.5 part by weight of polyethylene wax, 0.3 part by weight of polydimethylsiloxane, 2 parts by weight of 3-(methacryloyloxy)propyltrimethoxysilane, and 5 parts by weight of the light-enhancing and hardness-enhancing additive.

[0052] The preparation method of the light-enhancing and hardness-enhancing additive includes the following steps:

[0053] S1. Immerse the carbon nanotubes in a 0.5 mol / L nitric acid solution, stir at 400 rpm for 4 h, centrifuge, wash, and dry to obtain pretreated carbon nanotubes; Take 8 parts by weight of the pretreated carbon nanotubes and mix them with 200 parts by weight of a 50 wt% ethanol aqueous solution, disperse them for 0.5 h at an ultrasonic power of 200 W and an ultrasonic frequency of 25 KHz, add 4 parts by weight of perfluoropolyether siloxane, and continue to ultrasonically disperse for 0.5 h; Filter by suction, wash, and dry to obtain modified carbon nanotubes;

[0054] S2 mixes 10 parts by weight of ethyl methacrylate, 10 parts by weight of methacrylic acid, 2 parts by weight of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 1 part by weight of 1,2-epoxy-7-octene, 1 part by weight of hydroxyethyl methacrylate and 80 parts by weight of toluene, adds 0.3 part by weight of azobisisobutyronitrile and stirs for 10 min, and reacts at 85 °C and 300 rpm for 3 h to obtain an acrylate prepolymer;

[0055] S3 mixes 5 parts by weight of modified carbon nanotubes and 80 parts by weight of 60 wt% ethanol aqueous solution, disperses for 1 h at an ultrasonic power of 200 W and an ultrasonic frequency of 25 KHz, adds 20 parts by weight of the above acrylate prepolymer, and reacts at 65 °C and 400 rpm for 2 h, filters by suction, washes, and freeze-dries to obtain a light-enhancing and hardness-enhancing additive.

[0056] The preparation method of the perfluoropolyether siloxane is as follows: Take 15 parts by weight of ether and 2 parts by weight of hexamethylene diisocyanate and stir evenly, then add 16 parts by weight of hydroxyl-terminated perfluoropolyether and 2 parts by weight of divinyltriaminepropyltrimethoxysilane, stir at 30 °C and 300 rpm for 6 h, then add 3.5 parts by weight of γ-glycidyletheroxypropyltrimethoxysilane, and continue to react for 4 h, and remove the solvent by vacuum distillation to obtain perfluoropolyether alkoxysilane.

[0057] The preparation method of the light-enhancing and hardness-enhancing home-use crystal plating agent is as follows: Weigh each raw material by parts by weight, and stir and mix evenly the organosilicon resin, hydrogenated rosin resin, ethyl acetate, octylphenol polyoxyethylene ether, polyethylene wax, polydimethylsiloxane, 3-(methacryloyloxy)propyltrimethoxysilane, and light-enhancing and hardness-enhancing additive to obtain the light-enhancing and hardness-enhancing home-use crystal plating agent.

[0058] Example 3

[0059] A light-enhancing and hardness-enhancing home-use crystal plating agent is composed of the following raw materials in parts by weight: 60 parts by weight of organosilicon resin, 8 parts by weight of hydrogenated rosin resin, 70 parts by weight of ethyl acetate, 2 parts by weight of octylphenol polyoxyethylene ether, 2 parts by weight of polyethylene wax, 1 part by weight of polydimethylsiloxane, 5 parts by weight of 3-(methacryloyloxy)propyltrimethoxysilane, and 12 parts by weight of light-enhancing and hardness-enhancing additive.

[0060] The preparation method of the light-enhancing and hardness-enhancing additive includes the following steps:

[0061] S1. Immerse the carbon nanotubes in a 1.5 mol / L nitric acid solution, stir at 800 rpm for 10 h, centrifuge, wash, and dry to obtain pretreated carbon nanotubes; Take 12 parts by weight of the pretreated carbon nanotubes and mix them with 300 parts by weight of a 70 wt% ethanol aqueous solution, disperse for 2 h at an ultrasonic power of 400 W and an ultrasonic frequency of 60 KHz, add 8 parts by weight of perfluoropolyether siloxane, and continue ultrasonic dispersion for 2 h; Filter by suction, wash, and dry to obtain modified carbon nanotubes;

[0062] S2. Mix 20 parts by weight of ethyl methacrylate, 20 parts by weight of methacrylic acid, 4 parts by weight of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 3 parts by weight of 1,2-epoxy-7-octene, 3 parts by weight of hydroxyethyl methacrylate, and 200 parts by weight of toluene, add 1 part by weight of azobisisobutyronitrile and stir for 30 min, react at 110 °C and 500 rpm for 6 h to obtain an acrylate prepolymer;

[0063] S3. Mix 10 parts by weight of the modified carbon nanotubes and 140 parts by weight of an 80 wt% ethanol aqueous solution, disperse for 4 h at an ultrasonic power of 400 W and an ultrasonic frequency of 60 KHz, add 50 parts by weight of the above acrylate prepolymer, react at 80 °C and 800 rpm for 5 h, filter by suction, wash, and freeze-dry to obtain a light-enhancing and hardness-enhancing additive.

[0064] The preparation method of the perfluoropolyether siloxane is as follows: Take 30 parts by weight of diethyl ether and 6 parts by weight of hexamethylene diisocyanate and stir evenly, then add 28 parts by weight of hydroxyl-terminated perfluoropolyether and 6 parts by weight of diethylenetriaminepropyltrimethoxysilane, stir at 40 °C and 500 rpm for 16 h, then add 5 parts by weight of γ-glycidoxypropyltrimethoxysilane, continue the reaction for 8 h, and remove the solvent by vacuum distillation to obtain perfluoropolyether alkoxysilane.

[0065] The preparation method of the light-enhancing and hardness-enhancing home-use crystal plating agent is as follows: Weigh each raw material by parts by weight, and stir and mix the organosilicon resin, hydrogenated rosin resin, ethyl acetate, octylphenol polyoxyethylene ether, polyethylene wax, polydimethylsiloxane, 3-(methacryloyloxy)propyltrimethoxysilane, and the light-enhancing and hardness-enhancing additive evenly to obtain the light-enhancing and hardness-enhancing home-use crystal plating agent.

[0066] Comparative Example 1

[0067] A light-enhancing and hardness-enhancing home-use crystal plating agent is composed of the following raw materials by parts by weight: 40 parts by weight of organosilicon resin, 5 parts by weight of hydrogenated rosin resin, 40 parts by weight of ethyl acetate, 1 part by weight of octylphenol polyoxyethylene ether, 1 part by weight of polyethylene wax, 0.5 part by weight of polydimethylsiloxane, and 3 parts by weight of 3-(methacryloyloxy)propyltrimethoxysilane.

[0068] The preparation method of the brightening and hardening household crystal plating agent is as follows: weigh the raw materials according to weight, stir and mix the silicone resin, hydrogenated rosin resin, ethyl acetate, octylphenol polyoxyethylene ether, polyethylene wax, polydimethylsiloxane, and 3-(methacryloyloxy)propyltrimethoxysilane to obtain the brightening and hardening household crystal plating agent.

[0069] Comparative Example 2

[0070] A brightening and hardening household crystal plating agent is composed of the following raw materials in parts by weight: 40 parts by weight of silicone resin, 5 parts by weight of hydrogenated rosin resin, 40 parts by weight of ethyl acetate, 1 part by weight of octylphenol polyoxyethylene ether, 1 part by weight of polyethylene wax, 0.5 parts by weight of polydimethylsiloxane, 3 parts by weight of 3-(methacryloyloxy)propyltrimethoxysilane, and 8 parts by weight of brightening and hardening additives.

[0071] The preparation method of the brightening and hardening additive comprises the following steps:

[0072] The carbon nanotubes are immersed in a 1.0 mol / L nitric acid solution, stirred at 600 rpm for 6 hours, centrifuged, washed, and dried to obtain pretreated carbon nanotubes; 10 parts by weight of the pretreated carbon nanotubes are mixed with 240 parts by weight of a 60 wt% ethanol aqueous solution, dispersed for 1 hour at an ultrasonic power of 300 W and an ultrasonic frequency of 40 KHz, 6 parts by weight of perfluoropolyether siloxane are added, and ultrasonic dispersion is continued for 1 hour; suction filtration, washing, and drying are performed to obtain a brightening and hardening additive.

[0073] The preparation method of the perfluoropolyether siloxane is as follows: 20 parts by weight of ether and 4 parts by weight of hexamethylene diisocyanate are mixed evenly, and then 20 parts by weight of terminal hydroxyl perfluoropolyether and 4 parts by weight of diethylenetriaminopropyltrimethoxysilane are added, and the mixture is stirred at 35° C. and 400 rpm for 10 hours, and then 4.2 parts by weight of γ-glycidyloxypropyltrimethoxysilane is added, and the reaction is continued for 6 hours, and the solvent is removed by reduced pressure distillation to obtain perfluoropolyether alkoxysilane.

[0074] The preparation method of the brightening and hardening household crystal plating agent is as follows: weigh the raw materials according to weight, stir and mix the silicone resin, hydrogenated rosin resin, ethyl acetate, octylphenol polyoxyethylene ether, polyethylene wax, polydimethylsiloxane, 3-(methacryloyloxy)propyltrimethoxysilane and brightening and hardening additives to obtain the brightening and hardening household crystal plating agent.

[0075] Comparative Example 3

[0076] A light-enhancing and hardness-increasing home-use crystal plating agent is composed of the following raw materials in parts by weight: 40 parts by weight of organosilicon resin, 5 parts by weight of hydrogenated rosin resin, 40 parts by weight of ethyl acetate, 1 part by weight of octylphenol polyoxyethylene ether, 1 part by weight of polyethylene wax, 0.5 part by weight of polydimethylsiloxane, 3 parts by weight of 3-(methacryloyloxy)propyltrimethoxysilane, and 8 parts by weight of light-enhancing and hardness-increasing additive.

[0077] The preparation method of the light-enhancing and hardness-increasing additive includes the following steps:

[0078] S1. Mix 15 parts by weight of ethyl methacrylate, 15 parts by weight of methacrylic acid, 2.5 parts by weight of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 2 parts by weight of 1,2-epoxy-7-octene, 2 parts by weight of 2-hydroxyethyl methacrylate, and 120 parts by weight of toluene, add 0.5 part by weight of azobisisobutyronitrile and stir for 20 min, and react at 100 °C and 400 rpm for 4 h to obtain an acrylate prepolymer;

[0079] S2. Mix 8 parts by weight of carbon nanotubes and 80 parts by weight of 70 wt% ethanol aqueous solution, disperse at an ultrasonic power of 300 W and an ultrasonic frequency of 40 KHz for 2 h, add 30 parts by weight of the above acrylate prepolymer, react at 70 °C and 600 rpm for 3 h, filter, wash, and freeze-dry to obtain the light-enhancing and hardness-increasing additive.

[0080] The preparation method of the light-enhancing and hardness-increasing home-use crystal plating agent is as follows: Weigh each raw material according to parts by weight, and stir and mix the organosilicon resin, hydrogenated rosin resin, ethyl acetate, octylphenol polyoxyethylene ether, polyethylene wax, polydimethylsiloxane, 3-(methacryloyloxy)propyltrimethoxysilane, and light-enhancing and hardness-increasing additive evenly to obtain the light-enhancing and hardness-increasing home-use crystal plating agent.

[0081] Comparative Example 4

[0082] A light-enhancing and hardness-increasing home-use crystal plating agent is composed of the following raw materials in parts by weight: 40 parts by weight of organosilicon resin, 5 parts by weight of hydrogenated rosin resin, 40 parts by weight of ethyl acetate, 1 part by weight of octylphenol polyoxyethylene ether, 1 part by weight of polyethylene wax, 0.5 part by weight of polydimethylsiloxane, 3 parts by weight of 3-(methacryloyloxy)propyltrimethoxysilane, and 8 parts by weight of light-enhancing and hardness-increasing additive.

[0083] The preparation method of the light-enhancing and hardness-increasing additive includes the following steps:

[0084] S1. Immerse carbon nanotubes in 1.0 mol / L nitric acid solution, stir at 600 rpm for 6 h, centrifuge, wash, and dry to obtain pretreated carbon nanotubes; Take 10 parts by weight of the pretreated carbon nanotubes and mix them with 240 parts by weight of 60 wt% ethanol aqueous solution, disperse for 1 h under an ultrasonic power of 300 W and an ultrasonic frequency of 40 KHz, add 6 parts by weight of diethylenetriaminepropyltrimethoxysilane, and continue ultrasonic dispersion for 1 h; Filter by suction, wash, and dry to obtain modified carbon nanotubes;

[0085] S2. Mix 15 parts by weight of ethyl methacrylate, 15 parts by weight of methacrylic acid, 2.5 parts by weight of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 2 parts by weight of 1,2-epoxy-7-octene, 2 parts by weight of 2-hydroxyethyl methacrylate, and 120 parts by weight of toluene, add 0.5 parts by weight of azobisisobutyronitrile and stir for 20 min, react at 100 °C and 400 rpm for 4 h to obtain an acrylate prepolymer;

[0086] S3. Mix 8 parts by weight of the modified carbon nanotubes and 80 parts by weight of 70 wt% ethanol aqueous solution, disperse for 2 h under an ultrasonic power of 300 W and an ultrasonic frequency of 40 KHz, add 30 parts by weight of the above acrylate prepolymer, react at 70 °C and 600 rpm for 3 h, filter by suction, wash, and freeze-dry to obtain a light-enhancing and hardness-increasing additive.

[0087] The preparation method of the light-enhancing and hardness-increasing home-use crystal plating agent is as follows: Weigh each raw material by parts by weight, and stir and mix the organosilicon resin, hydrogenated rosin resin, ethyl acetate, octylphenol polyoxyethylene ether, polyethylene wax, polydimethylsiloxane, 3-(methacryloyloxy)propyltrimethoxysilane, and the light-enhancing and hardness-increasing additive evenly to obtain the light-enhancing and hardness-increasing home-use crystal plating agent.

[0088] Test Example

[0089] The light-enhancing and hardness-increasing home-use crystal plating agent prepared above is used for construction, and the construction process is as follows:

[0090] (1) First, degrease the surface of the furniture with a degreasing agent, spray the paint surface treatment agent on the polished paint surface to achieve the effects of degreasing and sealing the paint surface. Then, wipe off the oil stains with a clean microfiber cloth and smear the surface of the furniture paint evenly until the surface is clean;

[0091] (2) Sprinkle an appropriate amount of the light-enhancing and hardness-increasing home-use crystal plating agent on a special polishing sponge, wipe it longitudinally and horizontally in a straight line direction on the paint surface until a thin layer (about 2 μm) is covered. Treat a small piece of the paint surface each time, with a maximum of no more than 0.5 square meters; Wait for 30 s, and immediately wipe the paint surface gently with another microfiber cloth until the crystal plating agent is wiped dry, otherwise the crystal plating agent will volatilize and crystallize;

[0092] (3) After the paint surface is completed according to the above process, it needs to be left to dry for about an hour to wait for it to harden naturally. During this period, the paint surface should not be exposed to water. In addition, it should be noted that it cannot be washed with water within 7 days. The performance of the paint surface obtained by construction should be analyzed.

[0093] Test Example 1

[0094] Hardness test: refer to the national standard GB / T6739-2006 "Determination of film hardness of paint and varnish by pencil method" for hardness test. Before the test, place the sample drying plate coated with the crystal plating agent in an environment with a temperature of 23°C and a relative humidity of 50% for 20 hours. Repeat 5 times in parallel and take the average value. The results are shown in Table 1.

[0095] Adhesion test: refer to GB / T9286-2021 "Scratch test for paint and varnish" for testing. Before the test, the sample drying plate coated with 60° is placed in an environment with a temperature of 23°C and a relative humidity of 50% for 20 hours. The sample plate is a tinplate plate. It is paralleled 5 times and the average value is taken. The results are shown in Table 1.

[0096] Table 1 Hardness and adhesion test results

[0097] Pencil hardness Adhesion (level) Example 1 6H Level 0 Example 2 6H Level 0 Example 3 5H Level 1 Comparative Example 1 1H Level 5 Comparative Example 2 4H Level 4 Comparative Example 3 3H Level 3 Comparative Example 4 5H Level 2

[0098] Test Example 2

[0099] Gloss test: refer to the national standard GB / T9754-2007 "Determination of 20°, 60° and 85° specular gloss of paints and varnishes without metallic pigments" for gloss test, five times in parallel, and take the average value. The analysis results are shown in Table 2.

[0100] Table 2 Gloss effect test results

[0101] Glossiness at 60° (%) Example 1 83.7 Comparative Example 1 23.6 Comparative Example 2 21.7 Comparative Example 3 42.9 Comparative Example 4 75.8

[0102] From the above results, it can be seen that the light-enhancing and hardness-enhancing household crystal plating agent prepared by the present invention has a good light-enhancing and hardness-enhancing effect when applied to furniture. Comparing Example 1 with Comparative Examples 1-3, it can be seen that when the acrylic polymer and the modified carbon nanotube composite are simultaneously used in the furniture crystal plating agent formulation system, the acrylic polymer in the light-enhancing and hardness-enhancing additive can provide gloss, making the surface of household items brighter, enhancing the visual aesthetic feeling. At the same time, the interaction between the acrylate prepolymer and the surface of household items is enhanced, improving the adhesion of the crystal plating layer and ensuring that the crystal plating layer is not easily peeled off; the addition of the modified carbon nanotubes enhances the interaction with the main material, enhances the cohesion of the crystal plating agent and the interaction and combination with other components, and can be better dispersed and distributed in the crystal plating agent, making the crystal plating agent more uniform and stable, thereby improving the hardness and wear resistance of the crystal plating agent, protecting the surface of household items from scratches and wear, and extending the service life; the two complement each other in function, and their effects are mutually enhanced, and they have a synergistic effect. Therefore, the combined use of the two not only effectively improves the gloss of the furniture surface, but also can effectively improve the hardness of the furniture surface, protecting the furniture during use for a long time. It expands the application of the light-enhancing and hardness-enhancing additive in the light-enhancing and hardness-enhancing household crystal plating agent, not only improving the performance and aesthetics of the product, but also possibly reducing the cost and environmental impact, achieving a synergistic effect of multiple technical effects.

[0103] Further comparing Example 1 with Comparative Example 4, it can be seen that the carbon nanotubes modified with perfluoropolyether siloxane used in the present invention have a better effect than simply using siloxane modification. The reasons are as follows: (1) Perfluoropolyether siloxane has unique surface properties, which can form a uniform film on the surface of carbon nanotubes, reduce the surface energy of carbon nanotubes, reduce the agglomeration phenomenon, further improve the dispersibility of carbon nanotubes and the compatibility with the matrix, thereby improving the overall properties such as the uniformity and smoothness of the crystal plating agent; (2) The hydrophobicity and oleophobicity of perfluoropolyether siloxane are better than those of ordinary siloxane, and at the same time it has better gloss and transparency. This characteristic helps to improve the anti-pollution property and optical property of the crystal plating layer. For household items, this is an important performance index; (3) The carbon nanotubes modified with perfluoropolyether siloxane can form a stronger interfacial bond with the matrix, thereby improving the mechanical strength and wear resistance of the crystal plating layer.

[0104] In summary, the light-enhancing and hardness-enhancing additive prepared by the present invention can be effectively and uniformly mixed when added to the original materials of the light-enhancing and hardness-enhancing household crystal plating agent. The bridging structure formed by the perfluoropolyether-modified carbon nanotubes and the acrylic polymer on the surface of the carbon nanotubes enhances the light-enhancing performance and impact resistance of the household crystal plating agent. At the same time, the surface-modified carbon nanotubes are evenly distributed in the household crystal plating agent through the principle of similar compatibility, providing a more uniform light-enhancing and hardness-enhancing effect, and improving the comprehensive performance of the household crystal plating agent.

Claims

1. A light-enhancing and hardness-increasing home-use crystal plating agent, characterized in that, It consists of the following raw materials by weight: 30 - 60 parts by weight of silicone resin, 3 - 8 parts by weight of hydrogenated rosin resin, 30 - 70 parts by weight of solvent, 0.5 - 2 parts by weight of dispersant, 0.5 - 2 parts by weight of lubricant, 0.3 - 1 part by weight of leveling agent, 2 - 5 parts by weight of coupling agent, 5 - 12 parts by weight of brightening and hardening additive; The preparation method of the brightening and hardening additive includes the following steps: S1. Immerse carbon nanotubes in nitric acid solution and stir to obtain pretreated carbon nanotubes; take the pretreated carbon nanotubes and mix them with an ethanol aqueous solution, ultrasonically disperse them, add perfluoropolyether siloxane, and continue ultrasonic dispersion to obtain modified carbon nanotubes; S2. Mix ethyl methacrylate, methacrylic acid, N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 1,2-epoxy-7-octene, hydroxyethyl methacrylate and toluene, add azobisisobutyronitrile and heat with stirring to obtain an acrylate prepolymer; S3. Mix the modified carbon nanotubes and an ethanol aqueous solution, ultrasonically disperse them, add the above acrylate prepolymer, and heat to react to obtain a brightening and hardening additive; the preparation method of the perfluoropolyether siloxane is as follows: take 15 - 30 parts by weight of ether and 2 - 6 parts by weight of hexamethylene diisocyanate, stir evenly, then add 16 - 28 parts by weight of hydroxyl-terminated perfluoropolyether, 2 - 6 parts by weight of diethylenetriaminepropyltrimethoxysilane, stir at 30 - 40 °C and 300 - 500 rpm for 6 - 16 h, then add 3.5 - 5 parts by weight of γ-glycidoxypropyltrimethoxysilane, continue to react for 4 - 8 h, and remove the solvent by vacuum distillation to obtain perfluoropolyether alkoxysilane.

2. The brightening and hardening type home crystal plating agent according to claim 1, characterized in that, The solvent is at least one of ethyl acetate, N,N-dimethylformamide, acetone, toluene, cyclohexane, methylcyclohexane, and tetrahydrofuran.

3. The brightening and hardening type home crystal plating agent according to claim 1, characterized in that, The dispersant is at least one of acrylic block copolymer, Tween-60, octylphenol polyoxyethylene ether, and fatty acid monoethanolamide.

4. The brightening and hardening type home crystal plating agent according to claim 1, characterized in that, The lubricant is at least one of stearic acid, glycerol monostearate, and polyethylene wax.

5. The brightening and hardening type home crystal plating agent according to claim 1, characterized in that, The leveling agent is at least one of polyurethane leveling agent and silicone leveling agent.

6. The brightening and hardening type home crystal plating agent according to claim 1, characterized in that, The coupling agent is at least one of silane coupling agent, aluminate coupling agent, and titanate coupling agent.

7. The preparation method of the brightening and hardening type home crystal plating agent according to any one of claims 1-6, characterized in that, It includes the following steps: Weigh each raw material by weight, stir and mix the silicone resin, hydrogenated rosin resin, solvent, dispersant, lubricant, leveling agent, coupling agent, and brightening and hardening additive evenly to obtain a brightening and hardening type home crystal plating agent.