A kind of gold and silver wire protection liquid and its preparation and application method

Abstract

The present scheme provides a gold and silver wire protection liquid and a preparation and application method thereof, comprising the following steps: S1: dissolving an alkali-resistant resin mixture in a solvent and stirring the mixture to uniformly disperse the mixture to obtain a uniform solution, wherein the alkali-resistant resin mixture comprises 30-35% by mass of epoxy resin, 20-25% by mass of polyvinyl butyral resin, 20-25% by mass of polyurethane resin and 15-20% by mass of fluorocarbon resin; S2: adding a tackifier, a plasticizer, an ultraviolet absorber, a wear-resistant additive, a waterproof additive and an antioxidant to the uniform solution and stirring the mixture sufficiently to uniformly disperse the mixture to obtain a transparent solution, wherein the tackifier is rosin; S3: adding a surfactant to the transparent solution and continuing stirring the mixture to uniformly disperse the mixture to obtain a gold and silver wire protection liquid, wherein the prepared gold and silver wire protection liquid has the multifunctionality of high alkali resistance, sunlight resistance, friction resistance and water wash resistance.

Description

Technical Field

[0001] The present invention relates to the field of gold and silver threads, and in particular to a gold and silver thread protection liquid and a preparation and application method thereof. Background Art

[0002] Gold and silver thread is a unique textile decorative material with a shining metallic luster and noble texture. The woven fabrics are colorful in appearance and have vivid three-dimensional patterns. It not only meets people's demand for luxury and beauty, but also embodies the value of high-end craftsmanship and cultural heritage. It is widely used in high-end fashion, wedding dresses, stage costumes and various decorations.

[0003] At present, most of the common gold and silver threads on the market are made of aluminum-plated polyester film as the base material: first, an organic resin protective layer is coated on this base material. The coating materials of the organic resin protective layer include toner, epoxy resin and alkyd resin, etc. After coating, the coating is dried and fixed, and finally the processed material is cut into the shape of gold and silver threads by physical cutting. However, due to the poor softness of the gold and silver threads formed by cutting, it is difficult to weave directly. In addition, its own strength is low, and it is easy to break when used. Pure gold and silver threads are almost never used alone, so gold and silver threads are usually interwoven with other silk yarns such as polyester and cotton.

[0004] During textile dyeing and finishing, processes such as polyester alkali reduction and cotton mercerization require high-concentration alkali treatment. When gold and silver threads are interwoven with polyester, cotton, etc. and then processed through these processes, the gold and silver threads are easily damaged during processing due to the chemical properties of the gold and silver threads themselves and the limited protective ability of the protective coating on their surface in a high-concentration alkali environment. In addition, after being woven into garments, they also need to go through the use processes of sun exposure, friction, and washing. During use, sun exposure will make the luster of gold and silver threads dim and their chemical structure may also be destroyed. Friction will cause the gold and silver threads to wear and the surface coating to fall off, thus affecting their appearance and performance. The impact of water flow during washing and chemical substances such as detergents will also have an effect on the gold and silver threads, causing them to fade, corrode, and age.

[0005] In the face of these fading, corrosion and aging problems of gold and silver threads, the existing gold and silver thread protection liquid cannot protect the gold and silver threads well, which greatly affects the durability, appearance and performance of gold and silver thread products. Therefore, it is particularly urgent to develop a gold and silver thread protection liquid with high alkali resistance, sunlight resistance, friction resistance and water washing resistance. Summary of the invention

[0006] The purpose of the present invention is to provide a gold and silver thread protection liquid and a preparation and application method thereof, and to provide a gold and silver thread protection liquid that has high alkali resistance, sunlight resistance, friction resistance and water washing resistance.

[0007] To achieve the above objectives, the present technical solution provides a method for preparing a gold and silver wire protective liquid, comprising the following steps:

[0008] S1: dissolving an alkali-resistant resin mixture in a solvent and stirring to uniformly disperse the mixture to obtain a uniform solution, wherein the alkali-resistant resin mixture comprises 30-35% by weight of epoxy resin, 20-25% by weight of polyvinyl butyral resin, 20-25% by weight of polyurethane resin, and 15-20% by weight of fluorocarbon resin;

[0009] S2: adding a tackifier, a plasticizer, a UV absorber, a wear-resistant additive, a waterproof additive and an antioxidant to the uniform solution and stirring the mixture sufficiently to obtain a transparent solution, wherein the tackifier is rosin;

[0010] S3: Add surfactant to the transparent solution and continue stirring to evenly disperse it to obtain the gold and silver wire protection solution.

[0011] Compared with the prior art, this technical solution has the following characteristics and beneficial effects:

[0012] 1. Good alkali resistance. The gold and silver wire protective liquid prepared by this scheme has significant alkali resistance. By carefully formulating the alkali-resistant resin mixture, epoxy resin, fluorocarbon resin and polyvinyl butyral resin provide basic alkali resistance protection, and its special structure can effectively block alkaline substances. Polyurethane resin adds flexibility, making the protective layer less likely to crack and fall off in a high-alkali environment. After testing, in an alkaline environment, the protective liquid can form a solid protection for gold and silver wires, ensure their chemical stability, maintain their original performance, greatly extend the service life of gold and silver wires under alkaline conditions, reduce the risk of damage caused by alkaline corrosion, and ensure their quality and beauty.

[0013] 2. Good sun resistance. Benzophenone UV absorbers and hindered amine light stabilizers are added to the protective liquid. The former absorbs and decomposes ultraviolet light energy, while the latter captures free radicals to inhibit degradation reactions. The synergistic effect of the two effectively prevents the photo-oxidation of gold and silver threads by ultraviolet rays. Under the preferred mass ratio of 4:1, the color stability of the protective layer can be guaranteed after a long period of simulated sunlight exposure testing. This allows the gold and silver threads to maintain bright color and good performance for a long time in strong light environments such as outdoors, reducing fading and aging caused by sunlight, and expanding its use scenarios and duration.

[0014] 3. Good wear resistance. Nano-alumina and silicone additives are used as wear-resistant additives. Nano-alumina enhances the surface wear resistance and increases the hardness and friction resistance of the protective layer; silicone additives provide low friction and reduce friction loss. The effect is particularly good when the mass ratio of the two is 3:1, which not only ensures wear resistance but also reduces friction resistance. When subjected to mechanical friction, it can effectively prevent the wear of the protective layer to ensure the integrity and aesthetics of the gold and silver wire, so that the gold and silver wire products can still maintain their appearance and good protection performance in frequent friction scenarios.

[0015] 4. Good waterproof properties. The waterproofing agent includes fluorosilicone resin and paraffin emulsion. Fluorosilicone resin is hydrophobic to prevent water penetration, and the fluorosilicone bond gives water resistance and stain resistance; paraffin emulsion forms an additional waterproof layer. When the mass ratio of the two is 5:3, the protective layer of the gold and silver threads can have good waterproof performance after multiple washings. This ensures that the protective liquid can maintain the integrity and functionality of the protective layer under humid or washing conditions, so that the gold and silver threads can still maintain their luster and integrity after multiple washings, meet the needs of daily cleaning and various use scenarios that require contact with water, and extend the service life of gold and silver thread products.

[0016] 5. Environmentally friendly. The ingredients selected in the gold and silver wire protective liquid are all environmentally friendly materials, non-toxic and pollution-free, in line with green environmental protection standards. During normal use and subsequent treatment, it is not easy to produce pollutants that are harmful to the environment. DETAILED DESCRIPTION

[0017] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0018] In a first aspect, the present invention provides a method for preparing a gold and silver wire protective solution, comprising the following steps:

[0019] S1: dissolving an alkali-resistant resin mixture in a solvent and stirring to uniformly disperse the mixture to obtain a uniform solution, wherein the alkali-resistant resin mixture comprises 30-35% by weight of epoxy resin, 20-25% by weight of polyvinyl butyral resin, 20-25% by weight of polyurethane resin, and 15-20% by weight of fluorocarbon resin;

[0020] S2: adding a tackifier, a plasticizer, a UV absorber, a wear-resistant additive, a waterproof additive and an antioxidant to the uniform solution and stirring the mixture sufficiently to obtain a transparent solution, wherein the tackifier is rosin;

[0021] S3: Add surfactant to the transparent solution and continue stirring to evenly disperse it to obtain the gold and silver wire protection solution.

[0022] The gold and silver wire protective liquid provided in this solution not only performs well in a single performance aspect through the careful deployment and synergistic effect of multiple functional components, but also provides all-round protection for gold and silver wire as a whole. The various functional components cooperate and complement each other to form a tight protection system. For example, the alkali-resistant resin mixture provides a framework for basic protection, the ultraviolet absorber and antioxidant jointly resist the harm caused by sunlight, the wear-resistant additive enhances the friction resistance, the waterproof additive ensures the water washing resistance, and other ingredients such as tackifiers and plasticizers further optimize the adhesion and flexibility of the protective liquid on the surface of gold and silver wire. This synergistic effect allows gold and silver wire to be safe and sound in the complex and changeable actual use environment, whether facing the test of various adverse factors such as alkaline substances, direct sunlight, friction or water washing, and always maintain its excellent quality and beautiful appearance.

[0023] Specifically, the gold and silver wire protection liquid provided in this scheme has alkali resistance and high bonding strength. This scheme improves the resistance of the gold and silver wire protection liquid by adding an alkali-resistant resin mixture. At the same time, rosin as an adhesive can further improve the adhesion of the gold and silver wire protection liquid on the surface of the gold and silver wire, so that the gold and silver wire protection liquid is not easy to fall off in an alkaline environment.

[0024] The alkali-resistant resin mixture of the present scheme is specially selected as a mixture of epoxy resin, polyurethane resin, fluorocarbon resin and polyvinyl butyral resin, wherein the epoxy resin has excellent alkali resistance and adhesion, can effectively isolate alkaline solutions to prevent corrosion, and the hydroxyl and ether bonds in the molecular structure of the epoxy resin provide good chemical stability for the protective layer; the fluorocarbon chain structure in the fluorocarbon resin makes it highly chemically inert and weather-resistant, further improves the acid, alkali and UV resistance, and ensures that no chemical decomposition occurs under high alkaline conditions; the polyurethane resin provides elasticity and flexibility, enhances the impact resistance and durability of the protective film, avoids falling off or cracking under high friction, and the hydrogen bonds in the polyurethane chain segments can form a stable cross-linked structure with other components; the polyvinyl butyral resin has excellent chemical stability, has strong tolerance to acid and alkali environments, and is particularly stable under alkaline conditions. Its molecular structure contains cross-linking groups, which can form a tight polymer network structure and has good barrier capacity against the penetration of alkaline substances, thereby maintaining chemical stability in an alkaline environment.

[0025] In some embodiments, the epoxy resin is selected as bisphenol A epoxy resin; the polyurethane resin is selected as water-based polyether polyurethane resin, which has higher stability in alkaline environment and is not easy to degrade. The polyether structure gives the gold and silver wire protective layer higher flexibility and elasticity; the fluorocarbon resin is selected as polyvinylidene fluoride resin, PVDF has extremely strong tolerance to strong acids, strong alkalis, solvents and ultraviolet rays; the polyvinyl butyral resin is selected as high molecular weight PVB resin, high molecular weight PVB resin has a longer molecular chain, the formed coating is denser, has higher resistance to alkaline environment, and provides good flexibility.

[0026] It should be emphasized that epoxy resin, fluorocarbon resin and polyvinyl butyral resin provide excellent alkali resistance, but their hardness is high and they are brittle. This is because they form a relatively tight molecular arrangement and a high degree of cross-linking structure during the curing or molding process. For example, the cross-linking network formed after the epoxy resin is cured limits the mobility of the molecular chain, making it difficult for it to undergo a large deformation; the rigid structure of the fluorocarbon resin itself and the specific condensation structure of the polyvinyl butyral resin and other factors combine to cause the material to show a high hardness as a whole, and this high hardness is accompanied by low flexibility. When subjected to external force or bending, the molecular chain is difficult to buffer the external force through its own deformation, which easily leads to brittle behavior such as cracking of the material. However, the soft segment molecular chain of the polyurethane resin can play the role of "flexible connection" in the system of the alkali-resistant resin mixture. When subjected to external force, the deformable characteristics of the soft segment can drive the entire protective layer to undergo moderate deformation, alleviating the impact of external force on the material. At the same time, there is a certain interaction between the hard segment of the polyurethane resin and other resins, which makes the deformation controllable within a certain range. The protective layer will not lose its protective function due to excessive deformation, nor will it break easily due to lack of flexibility. In this way, the protective layer formed by the combination retains the excellent alkali resistance brought by epoxy resin, fluorocarbon resin and polyvinyl butyral resin, and adds a certain degree of flexibility and toughness through the introduction of polyurethane resin, so that it can better adapt to various external forces that gold and silver wires may encounter during actual use.

[0027] In some preferred embodiments, the mass ratio of epoxy resin, polyurethane resin, fluorocarbon resin and polyvinyl butyral resin is preferably 6:5:3:6. It has been verified that the alkali-resistant resin mixture with this mixing ratio exhibits the best tolerance of the gold and silver wire protective layer in an alkaline environment, under ultraviolet exposure and under high humidity conditions, and still maintains its original performance after multiple friction and water washing tests. This proves that the composite synergistic effect between the components can significantly improve the durability and functionality of the protective layer.

[0028] In some embodiments, the solvent for dissolving the alkali-resistant resin mixture is selected as a mixed solvent of 55-60% by weight of dimethylformamide DMF, 25-30% by weight of dimethyl sulfoxide DMSO and 10-20% by weight of cyclohexanone, and the dissolution temperature is 50-60 degrees Celsius.

[0029] The tackifier of this scheme is specially selected as rosin, which is a natural resin mainly composed of resin acid. Since the chemical structure of rosin contains carboxyl and cyclic unsaturated structures, it can enhance the adhesion between the components and the adhesion of the protective liquid on the surface of the gold and silver wires, and can effectively improve the stability and performance of the protective liquid. And rosin acid is its main component, which has a strong tackifying effect and good thermal stability. The dirosin acid in rosin can also provide anti-oxidation and aging performance.

[0030] In some embodiments, the addition ratio of rosin to the homogeneous solution is 5-10%.

[0031] The rosin selected in this scheme is a mixture of polymerized rosin 138 and glycerol esterified rosin in a mass ratio of 7:3.

[0032] The present invention improves the sun resistance by adding a UV absorber to the protective liquid for gold and silver threads. The UV absorber in the present invention includes a benzophenone UV absorber and a hindered amine light stabilizer. The benzophenone UV absorber absorbs and decomposes UV light energy, converting it into harmless heat energy, thereby preventing the photo-oxidation of the gold and silver threads by UV rays; the hindered amine light stabilizer captures light-induced free radicals to inhibit degradation reactions, thereby further preventing damage to the gold and silver threads by UV rays. The benzophenone UV absorber and the hindered amine light stabilizer are used in combination to avoid fading and aging of the gold and silver threads.

[0033] In some embodiments, the benzophenone ultraviolet absorber of the present embodiment is selected as UV-9 absorber, whose chemical formula is 2-hydroxy-4-methoxybenzophenone; the hindered amine light stabilizer is selected as HALS-944 stabilizer, whose chemical formula is poly[6-(1,1,3,3-tetramethylbutyl)amino]-1,3,5-triazine-2,4-diyl.

[0034] The ultraviolet light absorber of the present scheme contains 75-85% of benzophenone ultraviolet absorber by mass and 15-25% of hindered amine light stabilizer by mass. In some preferred embodiments, the mass ratio of benzophenone ultraviolet absorber to hindered amine light stabilizer is 4:1. At this time, the protective layer formed by the gold and silver thread protective liquid on the surface of the gold and silver thread still maintains stable color under long-term simulated sunlight exposure test.

[0035] In some embodiments, the ratio of the ultraviolet light absorber added to the homogeneous solution is 0.5-2%.

[0036] In addition, the gold and silver thread protection liquid of the present invention is additionally added with an antioxidant to further protect the gold and silver threads from the oxidation by heat and oxygen, so as to protect the gold and silver threads from maintaining their functionality for a long time even under strong light.

[0037] In some embodiments, the antioxidant is butylated hydroxyanisole, which has strong antioxidant properties that can slow down the oxidation process of the gold and silver wire material, further protect the stability of the gold and silver wire under high temperature and light, and extend the service life of the product.

[0038] In addition, in some embodiments, the antioxidant is added to the homogeneous solution in a ratio of 0.5-1.5%.

[0039] This solution improves the wear resistance by adding wear-resistant additives to the gold and silver wire protection liquid. The wear-resistant additives in this solution include nano-alumina and silicone additives. Through the combined use of nano-alumina and silicone additives, the protective layer formed by the gold and silver wire protection liquid has both hardness and smoothness. The nano-alumina particles enhance the surface wear resistance, increase the hardness and friction resistance of the protective layer formed by the gold and silver wire protection liquid to prevent damage under friction and mechanical action, and increase the surface strength of the protective layer. At the same time, it provides a certain degree of transparency and does not affect the gloss of the gold and silver wire. The low friction provided by the silicone additive reduces friction loss, enhances the surface smoothness, reduces the friction coefficient between fibers, prevents the protective layer formed by the gold and silver wire protection liquid from wearing during use, and ensures the integrity and aesthetics of the gold and silver wire. The synergistic effect of the two enables the gold and silver wire to maintain its appearance and protective performance when subjected to mechanical friction.

[0040] In some embodiments, the silicone adjuvant is selected as polydimethylsiloxane.

[0041] In some embodiments, the wear-resistant additive of this solution contains 75-80% by mass of nano-alumina and 20-25% by mass of organosilicon additive. In some preferred embodiments, the mass ratio of nano-alumina to organosilicon additive is 3:1, which not only ensures wear resistance, but also effectively reduces friction resistance.

[0042] In some embodiments, the addition ratio of the wear-resistant additive to the uniform solution is 4-6%.

[0043] This solution improves the waterproofness of the gold and silver thread protective liquid by adding a waterproofing agent to the gold and silver thread protective liquid. Specifically, the waterproofing agent of this solution includes fluorosilicone resin and paraffin emulsion, wherein the fluorosilicone resin has extremely low surface energy and hydrophobicity to prevent water penetration, thereby improving the water washing resistance, and its fluorosilicone bond gives the protective layer excellent water resistance and stain resistance, reducing the damage to the protective layer during the cleaning process; paraffin emulsion is used as an auxiliary waterproof component to form tiny wax particles embedded in the protective layer to form an additional waterproof layer, so that the protective liquid can resist the erosion of water washing and moisture, further improving the waterproof effect, and ensuring that the integrity and functionality of the protective layer are still maintained after multiple water washings. The compounding of fluorosilicone resin and paraffin emulsion makes the protective layer formed by the gold and silver thread protective liquid have excellent water washing resistance, and the protective gold and silver thread protective liquid will not lose its protective effect under humid or water washing conditions, and can still maintain its gloss and integrity after multiple washings.

[0044] In some embodiments, the fluorosilicone resin is selected as FEP 6300GZ water-based fluorosilicone resin, and the paraffin emulsion is selected as DF936 high melting point paraffin emulsion.

[0045] In some embodiments, the waterproofing agent contains 55-70% by weight of fluorosilicone resin and 30-45% by weight of paraffin emulsion. In some preferred embodiments, the mass ratio of fluorosilicone resin to paraffin emulsion is 5:3, and the waterproof performance of the protective layer formed by the gold and silver wire protective liquid after multiple washings is significantly better than that of using only one of the components.

[0046] In some embodiments, the waterproofing agent is added to the homogeneous solution in a ratio of 3-5%.

[0047] In addition, the plasticizer added to the gold and silver wire protection liquid of the present scheme can reduce the intermolecular force between rosin and other resin materials, thereby creating a larger activity space between the molecular chains. After curing, rosin and other resins no longer appear brittle, but form a more flexible protective layer, thereby improving the flexibility, ductility and fatigue resistance of the material, thereby achieving an effective toughening and plasticizing effect.

[0048] In some embodiments, the plasticizer is selected as a phthalate plasticizer or a phosphate plasticizer, or a mixture of the two, and such plasticizers have good compatibility with rosin and polyvinyl butyral. Specifically, the phthalate plasticizer is selected as dibutyl phthalate, and the phosphate plasticizer is selected as triphenyl phosphate.

[0049] In some embodiments, the plasticizer is added to the homogeneous solution in a ratio of 4-8%.

[0050] In addition, the surfactant added to the gold and silver wire protective solution of this scheme acts as a dispersant to adjust the fluidity of the solution, ensure the uniform distribution of each component, help form a smooth protective film, avoid the occurrence of bubbles or unevenness, and optimize the appearance and performance of the protective layer.

[0051] In some embodiments, the surfactant is polyethylene glycol (PEG), and the addition ratio of the surfactant to the homogeneous solution is 0.2-0.5%.

[0052] The interaction between the various components in the gold and silver wire protective liquid of this scheme is manifested in that different components play their own unique functions. There is no chemical conflict when used together, but instead a physical and chemical complementary effect is formed. The added light stabilizer and UV absorber will not affect the effects of other wear-resistant and waterproof components. On the contrary, due to the reduction of light aging, the effective service life of the protective coating as a whole is extended. Fluorosilicone resin shows stability under acid and alkali resistance conditions, and will not form separation when combined with paraffin emulsions, etc., ensuring the uniform performance of the overall protective layer.

[0053] In the second aspect, the present scheme provides a gold and silver wire protection liquid, including an alkali-resistant resin mixture, a tackifier, a plasticizer, a UV absorber, a wear-resistant additive, a waterproof additive, an antioxidant and a surfactant, wherein the alkali-resistant resin mixture includes an epoxy resin with a mass ratio of 30-35%, a polyvinyl butyral resin with a mass ratio of 20-25%, a polyurethane resin with a mass ratio of 20-25% and a fluorocarbon resin with a mass ratio of 15-20%, and the tackifier is selected as rosin.

[0054] In some embodiments, the UV absorber is a benzophenone UV absorber and a hindered amine light stabilizer with a mass ratio of 0.5-2%; the plasticizer is a phthalate plasticizer or a phosphate plasticizer; the wear-resistant additive is a nano-alumina and an organosilicon additive with a mass ratio of 4-6%; the waterproof additive is a fluorosilicone resin and a paraffin emulsion with a mass ratio of 3-5%. The antioxidant is butylated hydroxyanisole; and the surfactant is polyethylene glycol PEG.

[0055] In some embodiments, relative to the total mass of the gold and silver wire protection liquid: the mass of the alkali-resistant resin accounts for 55-70%; the mass of the tackifier accounts for 5-8%; the mass of the plasticizer accounts for 4-8%; the mass of the ultraviolet absorber accounts for 0.5-2%; the mass of the wear-resistant additive accounts for 4-6%; the mass of the waterproof additive accounts for 3-5%; the mass of the antioxidant accounts for 0.5-1.5%; the mass of the surfactant accounts for 0.2-0.5%.

[0056] In a third aspect, the present solution provides an application method of the gold and silver wire protection liquid, comprising coating the gold and silver wire protection liquid prepared in the first aspect or the gold and silver wire protection liquid in the second aspect on the surface of the gold and silver wire to form a protective layer.

[0057] Specifically, the application method of the gold and silver wire protection liquid provided in this solution comprises the following steps:

[0058] The gold and silver wire protection liquid is evenly sprayed onto the outer surface of the gold and silver wire through a spray device or dipped into the outer surface of the gold and silver wire through a pressure roller, and then dried and cured at 80~100°C to ensure that the protective layer forms a stable film, wherein the gold and silver wire protection liquid is selected as the gold and silver wire protection liquid prepared by the above method or the gold and silver wire protection liquid mentioned in the second aspect.

[0059] It should be noted that the gold and silver thread protective liquid of this scheme can be used in the processing scenarios of cotton fabrics and polyester fabrics. Cotton fabrics need to undergo mercerization treatment in a strong alkali solution environment (pH>14) during dyeing and finishing. Gold and silver threads also need to go through this process after being composited with cotton. The gold and silver threads proposed in this scheme can meet this application condition. The alkali reduction treatment of polyester fabrics in the dyeing and finishing process needs to be carried out under high temperature and strong alkali conditions (>100 ℃, pH 13). Composite interweaving of gold and silver threads and polyester fabrics is another common category. The alkali-resistant gold and silver threads proposed in this scheme can meet the requirements of alkali reduction treatment together with polyester threads without destroying their own color and gloss.

[0060] In order to verify the effect of the gold and silver wire protection solution of this solution, the application team designed the following examples:

[0061] 1. Verify the proportion of the alkali-resistant resin mixture:

[0062] Embodiment 1

[0063] Take 30g of epoxy resin, 25g of polyurethane resin, 15g of fluorocarbon resin and 30g of polyvinyl butyral resin in a mass ratio of 6:5:3:6 and mix them to obtain an alkali-resistant resin mixture. Dissolve the alkali-resistant resin mixture in 150ml of a mixed solvent of 60% dimethylformamide DMF, 30% dimethyl sulfoxide DMSO and 10% cyclohexanone and stir until a uniform solution is obtained. The dissolution temperature is 55 degrees Celsius. Add 12g of tackifier, 8g of plasticizer, 2.5g of ultraviolet absorber, 8g of wear-resistant additive, 6g of waterproofing additive and 2g of antioxidant to the uniform solution in sequence. Stir well after each addition to ensure that each component is evenly dispersed in the solution to form a uniform and transparent solution. Add 1g of polyethylene glycol PEG and continue stirring to eliminate bubbles in the solution to ensure that the protective film formed after coating is flat and bubble-free. During coating, spray the gold and silver wire protective liquid evenly onto the outer surface of the gold and silver wire through a spray device, and then at 100 °C to ensure stable film formation of the protective layer.

[0064] Comparative Example 1

[0065] The other steps are the same as those in Example 1, except that the mass ratio of epoxy resin, polyurethane resin, fluorocarbon resin and polyvinyl butyral resin is 7:4:4:5.

[0066] Comparative Example 2

[0067] The other steps are the same as those in Example 1, except that the mass ratio of epoxy resin, polyurethane resin, fluorocarbon resin and polyvinyl butyral resin is 7:5:3:5.

[0068] Test performance:

[0069] The gold and silver threads obtained in Example 1, Comparative Example 1 and Comparative Example 2 were placed in a 40 g / L NaOH solution for a tolerance test for 1 h, and then placed in a sunlight climate color fastness meter for a simulated sunlight test. The samples were then tested by a friction color fastness meter and a water washing color fastness meter. The test results are shown in Table 1. It can be seen that under the conditions of alkaline environment, ultraviolet exposure and high humidity, the gold and silver thread protective layer prepared in Example 1 exhibited the best tolerance, and maintained its original performance after multiple friction and water washing tests.

[0070] Table 1 Color fastness grades of Example 1, Comparative Example 1 and Comparative Example 2

[0071] .

[0072] 2. Verify the mixing ratio of UV absorber:

[0073] Embodiment 2

[0074] 30) g of epoxy resin, 25 g of polyurethane resin, 15 g of fluorocarbon resin and 30 g of polyvinyl butyral resin are mixed in a mass ratio of 6:5:3:6 to obtain an alkali-resistant resin mixture, and the alkali-resistant resin mixture is dissolved in 150 ml of a mixed solvent of 60% dimethylformamide DMF, 30% dimethyl sulfoxide DMSO and 10% cyclohexanone and stirred to a uniform solution at a dissolution temperature of 55 degrees Celsius; 12 g of a tackifier, 8 g of a plasticizer, 2.5 g of a UV absorber, 8 g of a wear-resistant additive, 6 g of a waterproofing additive and 2 g of antioxidant, wherein the UV absorber is 2 g of 2-hydroxy-4-methoxybenzophenone and 0.5 g of poly [6- (1,1,3,3-tetramethylbutyl) amino] -1,3,5-triazine-2,4-diyl in a mass ratio of 4:1, and the mixture is fully stirred after each addition to ensure that each component is evenly dispersed in the solution to form a uniform transparent solution, 1 g of polyethylene glycol PEG is added and continued to be stirred to eliminate bubbles in the solution to ensure that the protective film formed after coating is flat and free of bubbles. During coating, the gold and silver wire protective liquid is evenly sprayed onto the outer surface of the gold and silver wire through a spray device, and then dried and cured at 100 ° C to ensure that the protective layer forms a stable film.

[0075] Comparative Example 3

[0076] The other steps are the same as those in Example 1, except that the mass ratio of 2-hydroxy-4-methoxybenzophenone and poly[6-(1,1,3,3-tetramethylbutyl)amino]-1,3,5-triazine-2,4-diyl in the ultraviolet absorber is 3:1.

[0077] Comparative Example 4

[0078] The other steps are the same as those in Example 1, except that the mass ratio of 2-hydroxy-4-methoxybenzophenone to poly[6-(1,1,3,3-tetramethylbutyl)amino]-1,3,5-triazine-2,4-diyl in the ultraviolet absorber is 5:1.

[0079] Test performance:

[0080] The gold and silver threads obtained in Example 2, Comparative Example 3 and Comparative Example 4 were placed in a 40 g / L NaOH solution for a tolerance test for 1 h, and then placed in a sunlight climate color fastness meter for a simulated sunlight test. The test results are shown in Table 2, which shows that the gold and silver thread protective layer prepared in Example 2 still maintains stable color under the long-term simulated sunlight test.

[0081] Table 2 Color fastness grades of Example 2, Comparative Example 3 and Comparative Example 4

[0082] .

[0083] 3. Verify the mixing ratio of wear-resistant additives:

[0084] Take 30) g of epoxy resin, 25 g of polyurethane resin, 15 g of fluorocarbon resin and 30 g of polyvinyl butyral resin in a mass ratio of 6:5:3:6 and mix them to obtain an alkali-resistant resin mixture. Dissolve the alkali-resistant resin mixture in 150 ml of a mixed solvent of 60% dimethylformamide DMF, 30% dimethyl sulfoxide DMSO and 10% cyclohexanone and stir until a uniform solution is obtained. The dissolution temperature is 55 degrees Celsius. Add 12 g of a tackifier, 8 g of a plasticizer, 2.5 g of a UV absorber, 8 g of a wear-resistant additive, 6 g of a waterproof additive and 2 g of an antioxidant to the uniform solution in sequence. The wear-resistant additive is 6 g of nano-alumina and 2 g of a polydimethylsiloxane silicone additive in a mass ratio of 3:1. Stir thoroughly after each addition to ensure that each component is evenly dispersed in the solution to form a uniform and transparent solution. Add 1 g of polyethylene glycol PEG and continue stirring to eliminate bubbles in the solution to ensure that the protective film formed after coating is flat and bubble-free. During coating, the gold and silver wire protective liquid is evenly sprayed onto the outer surface of the gold and silver wire through a spray device, and then dried and cured at 100 °C to ensure that the protective layer forms a stable film.

[0085] Comparative Example 5

[0086] The other steps are the same as those in Example 1, except that the wear-resistant additive is nano-alumina and polydimethylsiloxane silicone additive in a mass ratio of 2:1.

[0087] Comparative Example 6

[0088] The other steps are the same as those in Example 1, except that the wear-resistant additive is nano-alumina and polydimethylsiloxane silicone additive in a mass ratio of 3:1.

[0089] Test performance:

[0090] The gold and silver threads obtained in Example 3, Comparative Example 5 and Comparative Example 6 were placed in a 40 g / L NaOH solution for tolerance test for 1 hour, and then placed in a friction color fastness meter for test. The test results are shown in Table 3. It can be seen that the gold and silver thread protective layer prepared in Example 3 has the best wear resistance when subjected to manual mechanical friction.

[0091] Table 3 Color fastness grades of Example 3, Comparative Example 5 and Comparative Example 6

[0092] .

[0093] 4. Verify the mixing ratio of waterproofing additives:

[0094] Take 30g of epoxy resin, 25g of polyurethane resin, 15g of fluorocarbon resin and 30g of polyvinyl butyral resin in a mass ratio of 6:5:3:6 and mix them to obtain an alkali-resistant resin mixture. Dissolve the alkali-resistant resin mixture in 150ml of a mixed solvent of 60% dimethylformamide DMF, 30% dimethyl sulfoxide DMSO and 10% cyclohexanone and stir until a uniform solution is obtained. The dissolution temperature is 55 degrees Celsius. Add 12g of tackifier, 8g of plasticizer, 2.5g of ultraviolet absorber, 8g of wear-resistant additive, 6g of waterproofing additive and 2g of antioxidant to the uniform solution in sequence, wherein the waterproofing additive is 3.75g of FEP6300GZ water-based fluorosilicone resin and 2.25g of DF 936 high melting point paraffin emulsion in a mass ratio of 5:3. Stir well after each addition to ensure that each component is evenly dispersed in the solution to form a uniform and transparent solution. Add 1 g of polyethylene glycol PEG and continue stirring to eliminate bubbles in the solution to ensure that the protective film formed after coating is flat and bubble-free. During coating, the gold and silver wire protective liquid is evenly sprayed onto the outer surface of the gold and silver wire through a spray device, and then dried and cured at 100 °C to ensure that the protective layer forms a stable film.

[0095] Comparative Example 7

[0096] The other steps are the same as those in Example 1, except that the mass ratio of the waterproofing agent is 4:3 of FEP 6300GZ water-based fluorosilicone resin and DF 936 high melting point paraffin emulsion.

[0097] Comparative Example 8

[0098] The other steps are the same as those in Example 1, except that the mass ratio of the waterproofing agent is 2:1 between FEP 6300GZ water-based fluorosilicone resin and DF 936 high melting point paraffin emulsion.

[0099] Test performance:

[0100] The gold and silver threads obtained in Example 3, Comparative Example 7 and Comparative Example 8 were placed in a 40 g / L NaOH solution for tolerance test for 1 hour, and then placed in a water washing color fastness meter for test. The test results are shown in Table 4. It can be seen that the waterproof performance of the gold and silver thread protective coating prepared in Example 4 after multiple water washings is significantly better than that of the case where one of the components is used alone.

[0101] Table 4 Color fastness grades of Example 4, Comparative Example 7 and Comparative Example 8

[0102] .

[0103] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0104] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.

Claims

1. A method for preparing a gold and silver wire protection solution, characterized in that: The following steps are involved: S1: dissolving an alkali-resistant resin mixture in a solvent and stirring to uniformly disperse the mixture to obtain a uniform solution, wherein the alkali-resistant resin mixture comprises an epoxy resin, a polyvinyl butyral resin, a polyurethane resin and a fluorocarbon resin, the epoxy resin is selected as a bisphenol A epoxy resin, the polyurethane resin is selected as a water-based polyether polyurethane resin, the fluorocarbon resin is selected as a polyvinylidene fluoride resin, and the polyvinyl butyral resin is selected as a high molecular weight PVB resin, and the mass ratio of the epoxy resin, the polyurethane resin, the fluorocarbon resin and the polyvinyl butyral resin is 6:5:3:6; S2: adding a tackifier, a plasticizer, a UV absorber, a wear-resistant additive, a waterproof additive and an antioxidant to the uniform solution and stirring the mixture sufficiently to obtain a transparent solution, wherein the tackifier is rosin; S3: adding a surfactant to the transparent solution and continuing to stir to evenly disperse the solution to obtain a gold and silver wire protection solution; The ultraviolet light absorbers include benzophenone ultraviolet absorbers and hindered amine light stabilizers, and the mass ratio of benzophenone ultraviolet absorbers to hindered amine light stabilizers is 4:1; the wear-resistant additives include nano alumina and silicone additives, and the mass ratio of nano alumina to silicone additives is 3:1; the waterproof additives include fluorosilicone resin and paraffin emulsion, and the mass ratio of fluorosilicone resin to paraffin emulsion is 5:

3.

2. The method for preparing the gold and silver wire protection solution according to claim 1, characterized in that: The plasticizer is selected from phthalate plasticizers or phosphate plasticizers, or a mixture of the two.

3. The method for preparing the gold and silver wire protection solution according to claim 1, characterized in that: The surfactant selected was polyethylene glycol (PEG), and the antioxidant selected was butylated hydroxyanisole (BHA).

4. The method for preparing the gold and silver wire protection solution according to claim 1, characterized in that: The addition ratio of ultraviolet absorber to the uniform solution is 0.5~2%, the addition ratio of rosin to the uniform solution is 5~10%, the addition ratio of wear-resistant additive to the uniform solution is 4~6%, the addition ratio of waterproof additive to the uniform solution is 3~5%, the addition ratio of plasticizer to the uniform solution is 4~8%, and the addition ratio of surfactant to the uniform solution is 0.2~0.5%.

5. A gold and silver wire protection liquid, characterized in that: The gold and silver wire protection liquid is prepared according to the preparation method of any one of claims 1 to 4.

6. A method for applying a gold and silver wire protection liquid, characterized in that: include: The gold and silver wire protection liquid described in claim 5 is evenly sprayed onto the outer surface of the gold and silver wire through a spray device or dip-coated onto the outer surface of the gold and silver wire through a pressure roller, and then dried and solidified at 80-100°C.