Wear-resistant corrosion-resistant gold-plated layer surface protection adhesive tape and preparation method thereof

Abstract

The invention discloses a wear-resistant and corrosion-resistant gold-plated layer surface protection adhesive tape and a preparation method thereof, and relates to the technical field of adhesive products, the wear-resistant and corrosion-resistant gold-plated layer surface protection adhesive tape comprises a wear-resistant layer, an adhesive layer and a release layer which are sequentially arranged from outside to inside; the wear-resistant layer is prepared by blending ultra-high molecular weight polyethylene micro powder and fluorocarbon resin; the adhesive layer is an organic silicon-polyurethane copolymer adhesive; and the release layer is a fluorine-containing polymer release film. By arranging the wear-resistant layer, the adhesive layer and the release layer, the adhesive tape has the effects of good wear resistance, adhesion and release performance, and can solve the problems that a traditional adhesive tape cannot protect a gold-plated layer for a long time due to the fact that the traditional adhesive tape is poor in wear resistance and easy to wear in the use process, and the adhesive tape is easy to fall off due to unstable adhesive force and cannot protect the gold-plated layer for a long time. And the protection effect and the use experience of the gold-plated layer are influenced by difficult release, easy damage of the adhesive tape during release or residual glue on the surface of a pasted object and the like.

Description

Technical Field

[0001] The invention relates to the technical field of adhesive products, in particular to a wear-resistant and corrosion-resistant gold-plated surface protection tape and a preparation method thereof. Background Art

[0002] Traditional gold-plated layer surface protection tape cannot effectively resist friction loss during long-term use, and cannot always maintain stable adhesion performance in complex environments, resulting in premature wear of the tape in actual application scenarios, losing its protective effect on the gold-plated layer, and frequent falling off, seriously affecting the protective effect of the gold-plated layer. The gold-plated layer surface protection tape of the present application can solve the problems of traditional tapes being unable to provide long-term protection for the gold-plated layer due to poor wear resistance, easy wear during use, and unstable adhesion causing the tape to fall off easily, as well as difficulty in release, easy damage to the tape during release, or residual glue stains on the surface of the adhered object, which affect the protection effect and usage experience of the gold-plated layer.

[0003] The defects of the existing gold-plated surface protection tape are: 1. Patent document CN110894383B discloses an anti-permeability coating liquid for a gold finger protective tape and a protective tape. The document mainly considers that the thermal stability and permeability of the protective tape in the prior art are not well matched. The general protective tape is either insufficient in thermal stability or insufficient in permeability. It does not consider how to solve the problems that the traditional tape has poor wear resistance and is easy to wear during use and cannot protect the gold-plated layer for a long time, the adhesive force is unstable and the tape is easy to fall off, and the release is difficult, the tape is easy to be damaged during release, or there are residual glue stains on the surface of the object, which affect the protection effect and use experience of the gold-plated layer; 2. Patent document CN111234722B discloses a double-layer metal-plastic composite film conductive tape, a manufacturing method and a coating machine thereof. The document mainly considers that the conventional conductive tape has poor conductivity and is basically unusable when the fracture surface reaches 1 / 2, which affects the performance and service life. It does not consider how to solve the problems of insufficient strength of the conventional base film, easy breakage during transportation or construction, poor weather resistance resulting in rapid aging outdoors or in light environments, inability to effectively prevent small molecules such as oxygen or water vapor from corroding the gold-plated layer, and easy breeding of microorganisms, stains affecting the appearance and performance of the tape, and thus difficulty in providing reliable protection for the gold-plated layer; 3. Patent document CN111718663B discloses a conductive non-woven tape and a method for manufacturing the same. The document mainly considers how to provide a conductive non-woven tape and a method for manufacturing the same with superior product performance and a more environmentally friendly product manufacturing process, but does not consider how to solve the problem that the adhesive layer of the existing tape is prone to cracks and cannot be repaired by itself when used for a long time or subjected to external force impact, and has poor elasticity and is difficult to adapt to the slight deformation of the protected surface, resulting in debonding due to stress concentration, and finally causing the tape to separate from the gold-plated layer and lose its protective function; 4. Patent document CN104185896B discloses a semiconductor wafer surface protection tape. The document mainly considers how to achieve the problem of grinding the back of the semiconductor wafer without infiltrating dust or water even when the surface protection tape is attached, and making a thin film wafer of less than 100 μm. It does not consider how to solve the problems of low surface hardness of ordinary tapes, easy scratches by sharp objects, poor wear resistance resulting in frequent replacement of tapes, weak anti-fouling property resulting in stains attaching and affecting the appearance and protection effect, and loose bonding between the layers, resulting in stratification during use, which reduces the overall protective performance of the tape. Summary of the invention

[0004] The purpose of the present invention is to provide a wear-resistant and corrosion-resistant gold-plated layer surface protection tape and a preparation method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a wear-resistant and corrosion-resistant gold-plated surface protection tape, comprising a wear-resistant layer, an adhesive layer and a release layer arranged in sequence from the outside to the inside; The wear-resistant layer is made of ultra-high molecular weight polyethylene powder and fluorocarbon resin. The adhesive layer is a silicone-polyurethane copolymer adhesive; The release layer is a fluorine-containing polymer release film.

[0006] Preferably, a method for preparing a wear-resistant and corrosion-resistant gold-plated surface protection tape comprises the following steps: S1, preparing the base film and introducing nanoparticles; S2, preparing a silicone-polyurethane copolymer adhesive; S3, blending ultra-high molecular weight polyethylene powder with fluorocarbon resin to prepare a wear-resistant layer; S4, performing low temperature plasma treatment on the surface of the base film; S5, preparing a release layer; S6, compounding the adhesive layer with the base film, and introducing a dynamic cross-linking system during the adhesive curing stage; S7, performing interface self-assembly between the base film and the adhesive layer, and laminating the composite tape to the release layer; S8. Performing photocuring surface modification on the prepared adhesive tape.

[0007] Preferably, S1 further includes: S11, adding 3% to 5% by weight of nano titanium dioxide and nano zinc oxide composite particles and 1% to 3% by weight of graphene nanosheets to the base film raw material; S12. Place the nanoparticles and base film raw materials in a high-speed stirring device, stir at a speed of 1200-1800 revolutions per minute for 40-60 minutes, and adopt a cast film forming process to form a base film.

[0008] Preferably, S2 further includes: S21, prepare raw materials according to the ratio of 40%-50% of organosilicon content and 50%-60% of polyurethane content, add organosilicon monomer and polyurethane monomer into the reaction kettle, firstly raise the temperature to 80-90° C. under nitrogen protection, stir and react for 2-3 hours, so as to preliminarily prepolymerize the two monomers; S22, adding dibutyltin dilaurate as a catalyst, the amount of the catalyst being 0.1%-0.3% of the total mass, continuing to raise the temperature to 100-110°C, reacting for 4-6 hours, and synthesizing a silicone-polyurethane copolymer adhesive.

[0009] Preferably, S3 further includes: S31, mixing ultra-high molecular weight polyethylene powder and fluorocarbon resin in a mass ratio of 3:2-2:3, and then adding 5%-10% by mass fraction of nano-ceramic particles; S32, first heating the fluorocarbon resin to 190-210° C. to melt it, then adding ultra-high molecular weight polyethylene powder and nano-ceramic particles, stirring in a high-speed stirrer at a speed of 900-1300 rpm for 20-30 minutes, then transferring the mixture to a twin-screw extruder, and performing blending and extrusion at a temperature of 230-250° C.; S33. The fused material is pressed in a mold through a compression molding process to form a wear-resistant layer material with a thickness of 10-15 μm.

[0010] Preferably, S4 further includes: S41, set the low-temperature plasma processing power to 100-150W, the processing time to 3-5min, and the processing gas to argon.

[0011] Preferably, S5 further includes: S51, dissolving the fluorine-containing polymer raw material in the organic solvent perfluorohexane to prepare a solution with a mass concentration of 15%-20%; S52, using a doctor blade method to evenly coat the solution on a smooth polyester film carrier, and then put it into a PECVD device, and treat it under the conditions of a radio frequency power of 50-100W, a deposition time of 10-20 minutes, and a reaction gas of a mixed gas of carbon tetrafluoride and hydrogen, wherein the volume ratio of carbon tetrafluoride to hydrogen is 1:1-2:1, and the coating thickness is controlled to be 5-8μm; S53, placing the coated film in a vacuum drying oven, and drying at 50-60° C. for 1-2 hours to remove the organic solvent and form a fluorine-containing polymer release layer.

[0012] Preferably, S6 further includes: S61, coating the prepared adhesive layer evenly on the surface of the plasma-treated base film by roller coating, and controlling the coating thickness to be 20-30 μm; S62, using a pressure roller device to closely fit the adhesive layer to the base film at a pressure of 0.2-0.3 MPa; S63. During the curing stage of the adhesive, add 0.5%-1% of dithiocarbamate by weight of the adhesive as a reversible crosslinking agent, control the crosslinking reaction temperature at 60-70°C, and the reaction time is 1-2 hours.

[0013] Preferably, S7 further includes: S71, uniformly coating a carboxyl-containing polymer solution having a concentration of 0.1 mol / L-0.3 mol / L on the surface of the base film by spraying, and laminating the coated base film and the adhesive layer for self-assembly at a temperature of 50° C.-70° C. and a pressure of 0.5 MPa-1 MPa; S72. Carefully peel off the prepared release layer from the polyester film carrier, and use automatic laminating equipment to laminate the release layer and the composite tape at a pressure of 0.1-0.2 MPa at room temperature.

[0014] Preferably, S8 further includes: S81, using a mixed solution containing an acrylate monomer and a benzoin ether photoinitiator, wherein the content of the photoinitiator is 2%-4% by mass of the mixed solution; S82, treatment under ultraviolet irradiation at wavelengths of 365nm and 254nm, light intensities of 100mW / cm²-150mW / cm² and 50mW / cm²-80mW / cm² respectively, and irradiation time of 1-3min; S83. The performance of the surface protection tape after light curing is tested through performance tests. The performance testing items include hardness test, abrasion resistance test, adhesion test, corrosion resistance test and aging resistance test.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention achieves the effect of good wear resistance, adhesion and release properties of the adhesive tape by arranging a wear-resistant layer made of a blend of ultra-high molecular weight polyethylene powder and fluorocarbon resin, an adhesive layer of an organic silicon-polyurethane copolymer adhesive and a release layer of a fluorine-containing polymer release film. Ultra-high molecular weight polyethylene powder has extremely high wear resistance and self-lubricating properties, while fluorocarbon resin has excellent chemical stability and weather resistance. The wear-resistant layer made by blending the two can effectively resist external friction and scratches and protect the surface of the gold-plated layer. The silicone-polyurethane copolymer adhesive combines the advantages of low surface energy and good flexibility of silicone and high viscosity and high strength of polyurethane. It can adapt to different use environments while ensuring good adhesion between the tape and the gold-plated layer. The fluoropolymer release film has extremely low surface energy, which makes the separation force between the release layer and the adhesive layer stable and small, making it convenient to use and fit the tape. Compared with the existing technology, the overall durability, adhesion stability and ease of use of the tape can be improved. Therefore, it can solve the problems that traditional tapes are not good in wear resistance, are easy to wear during use and cannot protect the gold-plated layer for a long time, the adhesive force is unstable, causing the tape to fall off easily, and the problems of difficult release, easy damage to the tape during release, or residual glue stains on the surface of the object being adhered, which affect the protection effect and use experience of the gold-plated layer.

[0016] 2. The present invention achieves the effect of enhancing the performance of the base film by adding 3%-5% by weight of nano titanium dioxide and nano zinc oxide composite particles and 1%-3% by weight of graphene nanosheets to the base film raw materials, and performing high-speed stirring and casting film formation. The nano titanium dioxide and nano zinc oxide composite particles have good ultraviolet absorption and scattering capabilities, can effectively block ultraviolet damage to the base film, and improve the weather resistance of the base film. At the same time, they also have certain antibacterial and self-cleaning properties, which can reduce the growth of microorganisms and stains on the surface of the base film. The graphene nanosheets have excellent mechanical properties, electrical conductivity and thermal conductivity, and can enhance the strength and toughness of the base film. In addition, the high specific surface area and good barrier properties of graphene can also prevent the penetration of small molecules such as oxygen or water vapor, and further protect the gold-plated layer. Compared with the existing technology, the strength, UV resistance, barrier properties, antibacterial properties and self-cleaning ability of the base film can be improved. Therefore, the problems of insufficient strength of the conventional base film, easy breakage during transportation or construction, poor weather resistance resulting in rapid aging outdoors or in light environments, inability to effectively prevent small molecules such as oxygen or water vapor from corroding the gold-plated layer, easy breeding of microorganisms, stains affecting the appearance and performance of the tape, and difficulty in providing reliable protection for the gold-plated layer can be solved.

[0017] 3. The present invention achieves the effect of forming a dynamic cross-linking system by adding 0.5%-1% of dithiocarbamate as a reversible cross-linking agent in the curing stage of the adhesive and controlling the cross-linking reaction temperature at 60-70°C. The disulfide bonds in the dithiocarbamate are reversible and can be broken and re-formed at certain temperatures and conditions. When the adhesive layer is subjected to external force and cracks are generated, the disulfide bonds will break and recombine at a suitable temperature to repair the cracks and restore the integrity and viscosity of the adhesive layer. This dynamic cross-linking system can also improve the elasticity of the adhesive layer, so that it can better adapt to the shape changes and deformations of the protected surface and avoid debonding caused by stress concentration. Compared with the prior art, the elasticity, self-repairing ability and deformation resistance of the adhesive layer can be improved. Therefore, the problem that the adhesive layer of the existing tape is prone to cracks and cannot be self-repaired when used for a long time or subjected to external force impact, the poor elasticity makes it difficult to adapt to the slight deformation of the protected surface, and debonding occurs due to stress concentration, and finally the tape is separated from the gold-plated layer and loses its protective effect can be solved.

[0018] 4. The present invention improves the surface performance of the tape by performing photocuring surface modification on the prepared tape, using a mixed solution containing acrylate monomers and benzoin ether photoinitiators, and treating the tape under ultraviolet irradiation of a specific wavelength and light intensity. Under ultraviolet irradiation, the photoinitiator decomposes to generate free radicals, which trigger the polymerization reaction of the acrylate monomers to form a dense cross-linked network structure on the surface of the tape. This structure can improve the hardness of the tape surface, making it more scratch-resistant; enhance wear resistance, reduce surface wear; and at the same time, reduce the surface Surface energy, improves anti-fouling properties, and makes it difficult for stains to adhere to the surface of the tape. In addition, the light curing process can further improve the bonding strength between the layers of the tape and enhance the overall stability. Compared with the existing technology, the hardness, wear resistance, anti-fouling properties of the tape surface and the bonding strength between the layers can be improved. Therefore, it can solve the problems of low surface hardness of ordinary tapes, easy scratches by sharp objects, poor wear resistance resulting in frequent replacement of tapes, weak anti-fouling properties leading to stains adhesion affecting the appearance and protection effect, and loose bonding between the layers, resulting in stratification during use, which reduces the overall protective performance of the tape. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Embodiment 1, A wear-resistant and corrosion-resistant gold-plated surface protection tape, comprising a wear-resistant layer, an adhesive layer and a release layer arranged in sequence from the outside to the inside; The wear-resistant layer is made of ultra-high molecular weight polyethylene powder and fluorocarbon resin. The adhesive layer is a silicone-polyurethane copolymer adhesive; The release layer is a fluorine-containing polymer release film.

[0021] Embodiment 2: A method for preparing a wear-resistant and corrosion-resistant gold-plated surface protection tape, the preparation method of the surface protection tape comprising the following steps: S1, preparing the base film and introducing nanoparticles; S1 also includes: S11, adding 3% by weight of nano titanium dioxide and nano zinc oxide composite particles and 1% by weight of graphene nanosheets to the base film raw material; S12. Place the nanoparticles and base film raw materials in a high-speed stirring device, stir at a speed of 1200 revolutions per minute for 40 minutes, and use a cast film forming process to form a base film.

[0022] S2, preparing a silicone-polyurethane copolymer adhesive; S2 also includes: S21, prepare raw materials according to the ratio of 40% silicone content and 60% polyurethane content, add silicone monomer and polyurethane monomer into the reaction kettle, firstly heat to 80° C. under nitrogen protection, stir and react for 2 hours to prepolymerize the two monomers; S22, adding dibutyltin dilaurate as a catalyst, the catalyst amount being 0.1% of the total mass, and continuing to raise the temperature to 100° C. and reacting for 4 hours to synthesize a silicone-polyurethane copolymer adhesive.

[0023] S3, blending ultra-high molecular weight polyethylene powder with fluorocarbon resin to prepare a wear-resistant layer; S3 also includes: S31, mixing ultra-high molecular weight polyethylene powder and fluorocarbon resin in a mass ratio of 3:2, and then adding 5% by mass fraction of nano-ceramic particles; S32, first heating the fluorocarbon resin to 190° C. to melt it, then adding ultra-high molecular weight polyethylene powder and nano-ceramic particles, stirring in a high-speed stirrer at a speed of 900 rpm for 20 minutes, then transferring the mixture to a twin-screw extruder, and performing blending and extrusion at a temperature of 230° C.; S33. The fused material is pressed in a mold through a compression molding process to form a wear-resistant layer material with a thickness of 10 μm.

[0024] S4, performing low temperature plasma treatment on the surface of the base film; S4 also includes: S41, setting the low-temperature plasma processing power to 100 W, the processing time to 3 min, and the processing gas to argon.

[0025] S5, preparing a release layer; S5 also includes: S51, dissolving the fluorine-containing polymer raw material in the organic solvent perfluorohexane to prepare a solution with a mass concentration of 15%; S52, using a doctor blade method to evenly coat the solution on a smooth polyester film carrier, and then put it into a PECVD device, and treat it under the conditions of a radio frequency power of 50 W, a deposition time of 10 minutes, and a reaction gas of a mixed gas of carbon tetrafluoride and hydrogen, wherein the volume ratio of carbon tetrafluoride to hydrogen is 1:1, and the coating thickness is controlled to be 5 μm; S53, placing the coated film in a vacuum drying oven, and drying at 50° C. for 1 hour to remove the organic solvent and form a fluorine-containing polymer release layer.

[0026] S6, compounding the adhesive layer with the base film, and introducing a dynamic cross-linking system during the adhesive curing stage; S6 also includes: S61, coating the prepared adhesive layer uniformly on the surface of the plasma-treated base film by roller coating, and controlling the coating thickness to be 20 μm; S62, using a pressing roller device to closely fit the adhesive layer and the base film under a pressure of 0.2 MPa; S63. During the adhesive curing stage, add 0.5% of dithiocarbamate by weight of the adhesive as a reversible crosslinking agent, control the crosslinking reaction temperature at 60°C, and the reaction time is 1 hour.

[0027] S7, performing interface self-assembly between the base film and the adhesive layer, and laminating the composite tape to the release layer; S7 also includes: S71, uniformly coating a 0.1 mol / L carboxyl-containing polymer solution on the surface of the base film by spraying, and laminating the coated base film and the adhesive layer for self-assembly at a temperature of 50° C. and a pressure of 0.5 MPa; S72. Carefully peel off the prepared release layer from the polyester film carrier, and use automatic laminating equipment to laminate the release layer and the composite tape at a pressure of 0.1 MPa at room temperature.

[0028] S8. Performing photocuring surface modification on the prepared adhesive tape.

[0029] S8 also includes: S81, using a mixed solution containing an acrylate monomer and a benzoin ether photoinitiator, wherein the content of the photoinitiator is 2% of the mass of the mixed solution; S82, treated under ultraviolet irradiation at wavelengths of 365nm and 254nm, light intensities of 100mW / cm² and 50mW / cm²- respectively, and irradiation time of 1min; S83. The performance of the surface protection tape after light curing is tested through performance tests. The performance testing items include hardness test, abrasion resistance test, adhesion test, corrosion resistance test and aging resistance test.

[0030] Embodiment 3, A method for preparing a wear-resistant and corrosion-resistant gold-plated surface protection tape, the preparation method of the surface protection tape comprising the following steps: S1, preparing the base film and introducing nanoparticles; S1 also includes: S11, adding 4% by weight of nano titanium dioxide and nano zinc oxide composite particles and 2% by weight of graphene nanosheets to the base film raw material; S12. Place the nanoparticles and base film raw materials in a high-speed stirring device, stir at a speed of 1500 revolutions per minute for 50 minutes, and use a cast film forming process to form a base film.

[0031] S2, preparing a silicone-polyurethane copolymer adhesive; S2 also includes: S21, prepare raw materials according to the ratio of 45% silicone content and 55% polyurethane content, add silicone monomer and polyurethane monomer into the reaction kettle, firstly heat to 85° C. under nitrogen protection, stir and react for 2.5 hours to prepolymerize the two monomers; S22, adding dibutyltin dilaurate as a catalyst, the catalyst amount being 0.2% of the total mass, continuing to raise the temperature to 105°C, reacting for 5 hours, and synthesizing a silicone-polyurethane copolymer adhesive.

[0032] S3, blending ultra-high molecular weight polyethylene powder with fluorocarbon resin to prepare a wear-resistant layer; S3 also includes: S31, mixing ultra-high molecular weight polyethylene powder and fluorocarbon resin in a mass ratio of 1:1, and then adding 7% by mass fraction of nano-ceramic particles; S32, first heating the fluorocarbon resin to 200° C. to melt it, then adding ultra-high molecular weight polyethylene powder and nano-ceramic particles, stirring in a high-speed stirrer at a speed of 1100 rpm for 25 minutes, then transferring the mixture to a twin-screw extruder, and performing blending and extrusion at a temperature of 240° C.; S33. The fused material is pressed in a mold through a compression molding process to form a wear-resistant layer material with a thickness of 12 μm.

[0033] S4, performing low temperature plasma treatment on the surface of the base film; S4 also includes: S41, setting the low-temperature plasma processing power to 120 W, the processing time to 4 minutes, and the processing gas to argon.

[0034] S5, preparing a release layer; S5 also includes: S51, dissolving the fluorine-containing polymer raw material in the organic solvent perfluorohexane to prepare a solution with a mass concentration of 18%; S52, using a doctor blade method to evenly coat the solution on a smooth polyester film carrier, and then put it into a PECVD device, and treat it under the conditions of a radio frequency power of 70 W, a deposition time of 15 minutes, and a reaction gas of a mixed gas of carbon tetrafluoride and hydrogen, wherein the volume ratio of carbon tetrafluoride to hydrogen is 3:2, and the coating thickness is controlled to be 6 μm; S53, placing the coated film in a vacuum drying oven, and drying at 55° C. for 1.5 hours to remove the organic solvent and form a fluorine-containing polymer release layer.

[0035] S6, compounding the adhesive layer with the base film, and introducing a dynamic cross-linking system during the adhesive curing stage; S6 also includes: S61, coating the prepared adhesive layer evenly on the surface of the plasma-treated base film by roller coating, and controlling the coating thickness to be 25 μm; S62, using a pressing roller device to closely fit the adhesive layer and the base film at a pressure of 0.25 MPa; S63. During the curing stage of the adhesive, add 0.7% of dithiocarbamate by weight of the adhesive as a reversible crosslinking agent, control the crosslinking reaction temperature at 65°C, and the reaction time is 1.5 hours.

[0036] S7, performing interface self-assembly between the base film and the adhesive layer, and laminating the composite tape to the release layer; S7 also includes: S71, uniformly coating a 0.2 mol / L carboxyl-containing polymer solution on the surface of the base film by spraying, and laminating the coated base film and the adhesive layer at a temperature of 60° C. and a pressure of 0.7 MPa for self-assembly; S72. Carefully peel off the prepared release layer from the polyester film carrier, and use automatic laminating equipment to laminate the release layer and the composite tape at a pressure of 0.15 MPa at room temperature.

[0037] S8. Performing photocuring surface modification on the prepared adhesive tape.

[0038] S8 also includes: S81, using a mixed solution containing an acrylate monomer and a benzoin ether photoinitiator, the photoinitiator content being 3% of the mass of the mixed solution; S82, treated under ultraviolet irradiation at wavelengths of 365nm and 254nm, with light intensities of 120mW / cm² and 60mW / cm² respectively, and irradiation time of 2min; S83. The performance of the surface protection tape after light curing is tested through performance tests. The performance testing items include hardness test, abrasion resistance test, adhesion test, corrosion resistance test and aging resistance test.

[0039] Embodiment 4: A method for preparing a wear-resistant and corrosion-resistant gold-plated surface protection tape, the preparation method of the surface protection tape comprising the following steps: S1, preparing the base film and introducing nanoparticles; S1 also includes: S11, adding 5% by weight of nano titanium dioxide and nano zinc oxide composite particles and 3% by weight of graphene nanosheets to the base film raw material; S12. Place the nanoparticles and base film raw materials in a high-speed stirring device, stir at a speed of 1800 revolutions per minute for 60 minutes, and use a cast film forming process to form a base film.

[0040] S2, preparing a silicone-polyurethane copolymer adhesive; S2 also includes: S21. Prepare raw materials according to the ratio of 50% silicone content and 50% polyurethane content, add silicone monomer and polyurethane monomer into the reaction kettle, first heat to 90°C under nitrogen protection, stir and react for 3 hours to prepolymerize the two monomers.

[0041] S22, adding dibutyltin dilaurate as a catalyst, the catalyst amount being 0.3% of the total mass, continuing to raise the temperature to 110° C., reacting for 6 hours, and synthesizing a silicone-polyurethane copolymer adhesive.

[0042] S3, blending ultra-high molecular weight polyethylene powder with fluorocarbon resin to prepare a wear-resistant layer; S3 also includes: S31, mixing ultra-high molecular weight polyethylene powder and fluorocarbon resin in a mass ratio of 2:3, and then adding 10% by mass fraction of nano-ceramic particles; S32, first heating the fluorocarbon resin to 210° C. to melt it, then adding ultra-high molecular weight polyethylene powder and nano-ceramic particles, stirring in a high-speed stirrer at a speed of 1300 rpm for 30 minutes, then transferring the mixture to a twin-screw extruder, and performing blending and extrusion at a temperature of 250° C.; S33. The fused material is pressed in a mold through a compression molding process to form a wear-resistant layer material with a thickness of 15 μm.

[0043] S4, performing low temperature plasma treatment on the surface of the base film; S4 also includes: S41, setting the low-temperature plasma processing power to 150 W, the processing time to 5 min, and the processing gas to argon.

[0044] S5, preparing a release layer; S5 also includes: S51, dissolving the fluorine-containing polymer raw material in the organic solvent perfluorohexane to prepare a solution with a mass concentration of 20%; S52, using a doctor blade method to evenly coat the solution on a smooth polyester film carrier, and then put it into a PECVD device, and treat it under the conditions of a radio frequency power of 100 W, a deposition time of 20 minutes, and a reaction gas of a mixed gas of carbon tetrafluoride and hydrogen, wherein the volume ratio of carbon tetrafluoride to hydrogen is 2:1, and the coating thickness is controlled to be 8 μm; S53, placing the coated film in a vacuum drying oven, and drying at 60° C. for 2 hours to remove the organic solvent and form a fluorine-containing polymer release layer.

[0045] S6, compounding the adhesive layer with the base film, and introducing a dynamic cross-linking system during the adhesive curing stage; S6 also includes: S61, coating the prepared adhesive layer evenly on the surface of the plasma-treated base film by roller coating, and controlling the coating thickness to be 30 μm; S62, using a pressing roller device to closely fit the adhesive layer and the base film under a pressure of 0.3 MPa; S63. During the adhesive curing stage, add 1% of the adhesive mass of dithiocarbamate as a reversible crosslinking agent, control the crosslinking reaction temperature at 70°C, and the reaction time is 2 hours.

[0046] S7, performing interface self-assembly between the base film and the adhesive layer, and laminating the composite tape to the release layer; S7 also includes: S71, uniformly coating a carboxyl-containing polymer solution having a concentration of 0.3 mol / L on the surface of the base film by spraying, and laminating the coated base film and the adhesive layer at a temperature of 70° C. and a pressure of 1 MPa for self-assembly; S72. Carefully peel off the prepared release layer from the polyester film carrier, and use automatic laminating equipment to laminate the release layer and the composite tape at a pressure of 0.2 MPa at room temperature.

[0047] S8. Performing photocuring surface modification on the prepared adhesive tape.

[0048] S8 also includes: S81. Use a mixed solution containing an acrylate monomer and a benzoin ether photoinitiator, wherein the content of the photoinitiator is 4% of the mass of the mixed solution.

[0049] S82, treatment under ultraviolet irradiation at wavelengths of 365nm and 254nm, light intensities of 150mW / cm² and 80mW / cm² respectively, and irradiation time of 3min; S83. The performance of the surface protection tape after light curing is tested through performance tests. The performance testing items include hardness test, abrasion resistance test, adhesion test, corrosion resistance test and aging resistance test.

[0050] Embodiment 5, As a blank control group, an ordinary base film was used without adding nanoparticles, using an ordinary adhesive, without special preparation of the wear-resistant layer and the release layer, without plasma treatment, interface self-assembly and photocuring surface modification, and the adhesive layer was directly coated on the base film to make a tape.

[0051] Embodiment 6, The performance test results of Example 2, Example 3, Example 4 and the blank control group Example 5 are as follows:

[0052] By comparing the performance test results of the four embodiments, it can be seen that among the second, third and fourth embodiments, the performance indicators of the fourth embodiment are the best, and the gold-plated surface protection tapes prepared by the second, third and fourth embodiments are significantly better than those of the blank control embodiment in terms of hardness, wear resistance, adhesion, corrosion resistance and aging resistance, which indicates that the process steps of adding nanoparticles, preparing special adhesives, wear-resistant layers, release layers, plasma treatment, interface self-assembly and photocuring surface modification adopted in the present invention have a significant effect on improving the performance of the tape.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A wear-resistant and corrosion-resistant gold-plated surface protection tape, characterized in that: It includes a wear-resistant layer, an adhesive layer and a release layer arranged in sequence from the outside to the inside; The wear-resistant layer is made of ultra-high molecular weight polyethylene powder and fluorocarbon resin. The adhesive layer is a silicone-polyurethane copolymer adhesive; The release layer is a fluorine-containing polymer release film.

2. A method for preparing a wear-resistant and corrosion-resistant gold-plated surface protection tape, applicable to the wear-resistant and corrosion-resistant gold-plated surface protection tape according to claim 1, characterized in that: The preparation method of the surface protection tape includes the following steps: S1, preparing the base film and introducing nanoparticles; S2, preparing a silicone-polyurethane copolymer adhesive; S3, blending ultra-high molecular weight polyethylene powder with fluorocarbon resin to prepare a wear-resistant layer; S4, performing low temperature plasma treatment on the surface of the base film; S5, preparing a release layer; S6, compounding the adhesive layer with the base film, and introducing a dynamic cross-linking system during the adhesive curing stage; S7, performing interface self-assembly between the base film and the adhesive layer, and laminating the composite tape to the release layer; S8. Performing photocuring surface modification on the prepared adhesive tape.

3. The method for preparing a wear-resistant and corrosion-resistant gold-plated surface protection tape according to claim 2, characterized in that: S1 also includes: S11, adding 3% to 5% by weight of nano titanium dioxide and nano zinc oxide composite particles and 1% to 3% by weight of graphene nanosheets to the base film raw material; S12. Place the nanoparticles and base film raw materials in a high-speed stirring device, stir at a speed of 1200-1800 revolutions per minute for 40-60 minutes, and adopt a cast film forming process to form a base film.

4. The method for preparing a wear-resistant and corrosion-resistant gold-plated surface protection tape according to claim 2, characterized in that: S2 also includes: S21, prepare raw materials according to the ratio of 40%-50% of organosilicon content and 50%-60% of polyurethane content, add organosilicon monomer and polyurethane monomer into the reaction kettle, firstly raise the temperature to 80-90° C. under nitrogen protection, stir and react for 2-3 hours, so as to preliminarily prepolymerize the two monomers; S22, adding dibutyltin dilaurate as a catalyst, the amount of the catalyst being 0.1%-0.3% of the total mass, continuing to raise the temperature to 100-110°C, reacting for 4-6 hours, and synthesizing a silicone-polyurethane copolymer adhesive.

5. The method for preparing a wear-resistant and corrosion-resistant gold-plated surface protection tape according to claim 2, characterized in that: S3 also includes: S31, mixing ultra-high molecular weight polyethylene powder and fluorocarbon resin in a mass ratio of 3:2-2:3, and then adding 5%-10% by mass fraction of nano-ceramic particles; S32, first heating the fluorocarbon resin to 190-210° C. to melt it, then adding ultra-high molecular weight polyethylene powder and nano-ceramic particles, stirring in a high-speed stirrer at a speed of 900-1300 rpm for 20-30 minutes, then transferring the mixture to a twin-screw extruder, and performing blending and extrusion at a temperature of 230-250° C.; S33. The fused material is pressed in a mold through a compression molding process to form a wear-resistant layer material with a thickness of 10-15 μm.

6. The method for preparing a wear-resistant and corrosion-resistant gold-plated surface protection tape according to claim 2, characterized in that: S4 also includes: S41, set the low-temperature plasma processing power to 100-150W, the processing time to 3-5min, and the processing gas to argon.

7. The method for preparing a wear-resistant and corrosion-resistant gold-plated surface protection tape according to claim 2, characterized in that: S5 also includes: S51, dissolving the fluorine-containing polymer raw material in the organic solvent perfluorohexane to prepare a solution with a mass concentration of 15%-20%; S52, using a doctor blade method to evenly coat the solution on a smooth polyester film carrier, and then put it into a PECVD device, and treat it under the conditions of a radio frequency power of 50-100W, a deposition time of 10-20 minutes, and a reaction gas of a mixed gas of carbon tetrafluoride and hydrogen, wherein the volume ratio of carbon tetrafluoride to hydrogen is 1:1-2:1, and the coating thickness is controlled to be 5-8μm; S53, placing the coated film in a vacuum drying oven, and drying at 50-60° C. for 1-2 hours to remove the organic solvent and form a fluorine-containing polymer release layer.

8. The method for preparing a wear-resistant and corrosion-resistant gold-plated surface protection tape according to claim 2, characterized in that: S6 also includes: S61, coating the prepared adhesive layer evenly on the surface of the plasma-treated base film by roller coating, and controlling the coating thickness to be 20-30 μm; S62, using a pressure roller device to closely fit the adhesive layer to the base film at a pressure of 0.2-0.3 MPa; S63. During the curing stage of the adhesive, add 0.5%-1% of dithiocarbamate by weight of the adhesive as a reversible crosslinking agent, control the crosslinking reaction temperature at 60-70°C, and the reaction time is 1-2 hours.

9. The method for preparing a wear-resistant and corrosion-resistant gold-plated surface protection tape according to claim 2, characterized in that: S7 also includes: S71, uniformly coating a carboxyl-containing polymer solution having a concentration of 0.1 mol / L-0.3 mol / L on the surface of the base film by spraying, and laminating the coated base film and the adhesive layer for self-assembly at a temperature of 50° C.-70° C. and a pressure of 0.5 MPa-1 MPa; S72. Carefully peel off the prepared release layer from the polyester film carrier, and use automatic laminating equipment to laminate the release layer and the composite tape at a pressure of 0.1-0.2 MPa at room temperature.

10. The method for preparing a wear-resistant and corrosion-resistant gold-plated surface protection tape according to claim 2, characterized in that: S8 also includes: S81, using a mixed solution containing an acrylate monomer and a benzoin ether photoinitiator, wherein the content of the photoinitiator is 2%-4% by mass of the mixed solution; S82, treatment under ultraviolet irradiation at wavelengths of 365nm and 254nm, light intensities of 100mW / cm²-150mW / cm² and 50mW / cm²-80mW / cm² respectively, and irradiation time of 1-3min; S83. The performance of the surface protection tape after light curing is tested through performance tests. The performance testing items include hardness test, abrasion resistance test, adhesion test, corrosion resistance test and aging resistance test.

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