55 results about "Polyethylene naphthalate" patented technology

The invention relates to an internal serial metallized film, a preparation method, a filter capacitor and a base film, the base film is made of a blending material of polyethylene glycol terephthalate and polyethylene naphthalate according to a mass ratio of 2: 3, and the thickness of the base film is 8-12 [mu] m; the multi-layer metallization layer is arranged on the base film and comprises a first metal layer, a buffer layer and a second metal layer, the buffer layer is located between the first metal layer and the second metal layer, the patterned structure forms a plurality of conductive units which are connected in series on the multi-layer metallization layer, each conductive unit is in a regular hexagon shape, and the first metal layer is arranged on the first metal layer. The side length of the conductive units is 3-6mm, and an isolation belt with the width of 0.3-0.8 mm is arranged between the adjacent conductive units. According to the invention, a plurality of key performance indexes such as high-frequency filtering performance, voltage endurance capability, oxidation resistance, structural stability, light transmission and the like are optimized and improved.

To provide a biaxially stretched film that has excellent folding resistance and heat resistance.SOLUTION: A biaxially stretched film contains a polyethylene naphthalate copolymer (A), wherein the average of hysteresis loss ratios after a tensile cycle test up to 5% tensile strain in the MD direction and in the TD direction is 47.0% or less.SELECTED DRAWING: None

The present invention provides a PET / PBT composite material and a preparation method thereof, and relates to the field of polymer composite materials, the PET / PBT composite material comprises the following raw materials by weight: 30-50 parts of PBT resin; 20 to 40 parts of PET resin; 10 to 20 parts of polyethylene naphthalate; 5 to 15 parts of modified nano aromatic amide fiber; 8 to 15 parts of ethylene-methacrylic acid copolymer neutralized by metal ions; 3-8 parts of a compatilizer; 0.3 to 1 part of an antioxidant; and 0.5 to 1.5 parts of a lubricant. The modified nano aromatic amide fiber provides rigidity, the ionic polymer provides toughness, the modified nano aromatic amide fiber and the ionic polymer are combined, the fiber serves as a rigid framework to bear main loads, and the ionic polymer distributed on the interface of the fiber and a matrix efficiently dissipates impact energy and prevents crack propagation through reversible fracture of dynamic bonds of the ionic polymer. Meanwhile, high strength, high modulus, ultrahigh toughness and high heat resistance are realized.

The invention discloses an anti-static polyester film and a preparation method thereof, and mainly relates to the technical field of layered products composed of polyester. Compared with the prior art, the antistatic polyester film provided by the invention is prepared from A and B master batch materials through the steps of melting, sheet casting, stretching and the like, the A-layer master batch material is polyethylene glycol terephthalate and polyethylene naphthalate, and the B-layer master batch material is a polyethylene glycol terephthalate, antistatic agent and carbon nanotube composite material. According to the carbon nanotube composite material, the dispersity of the carbon nanotubes in polyester and the interface bonding force of the carbon nanotubes and a matrix are modified and enhanced, and a continuous conductive network is constructed to improve the antistatic performance; meanwhile, the interaction in the composite material is enhanced, so that the tensile strength of the film is improved.

An optically anisotropic polymer thin film includes a crystallizable polymer and an additive configured to interact with the polymer (e.g., via π-π interactions) to facilitate chain alignment and, in some examples, create a higher crystalline content within the polymer thin film. The polymer thin film may be characterized by a bimodal molecular weight distribution where the molecular weight of the additive may be less than approximately 50% of the molecular weight of the crystallizable polymer. Example crystallizable polymers include polyethylene naphthalate, polyethylene terephthalate, polybutylene naphthalate, polybutylene terephthalate, as well as derivatives thereof. Example additives, which may occupy up to approximately 10 wt. % of the polymer thin film, include aromatic ester oligomers, aromatic amide oligomers, and polycyclic aromatic hydrocarbons, for example. The optically anisotropic polymer thin film may be characterized by a refractive index greater than approximately 1.7 and an in-plane birefringence greater than approximately 0.2.

The present application relates to a kind of high barrier bottle grade polyester and its preparation method, belong to polyester technical field.The high barrier bottle grade polyester includes polyethylene terephthalate, polyethylene naphthalate, composite nano barrier agent, reactive compatibilizer.The composite nano barrier agent is composed of modified nano silicon dioxide and modified halloysite nanotube.The reactive compatibilizer is styrene-glycidyl methacrylate copolymer.The present application realizes the bottle grade polyester of high barrier, high transparency and low acetaldehyde under low PEN addition amount by the synergistic effect of the triple mechanism of intrinsic barrier of PEN, physical maze effect of composite nano barrier agent and interface strengthening of reactive compatibilizer, and the technology of master batch pre-dispersion process, vacuum exhaust and acetaldehyde absorption is combined, meets the requirement of food packaging, and is suitable for juice, tea beverage, edible oil and other packaging containers.

The present application relates to the technical field of polyester material modification, and particularly relates to a high-transparency polyethylene naphthalate material, a preparation method and application, aiming at the problems of fast crystallization rate of the PEN material in the process of processing and molding, easy crystallization of thick products, light transmittance reduction caused by the crystallization, and insufficient material toughness, the present application introduces a diol monomer containing a side group and a flexible chain segment diol monomer into the PEN melt polycondensation process for copolymerization, wherein the diol containing a side group introduces a steric hindrance structure in the molecular chain to destroy the regular packing of the PEN molecular chain, thereby inhibiting the material crystallization behavior and improving the light transmittance of the thick product; the flexible diol introduces a flexible chain segment in the molecular chain to increase the free volume of the molecular chain and improve the molecular chain movement ability, thereby improving the material toughness. Through the above-mentioned synergistic copolymerization modification method, the crystallization tendency of the PEN material can be effectively reduced, the obtained PEN thick product has excellent light transmittance and toughness at the same time, and is suitable for the preparation of high-performance transparent polyester products.

The application discloses a kind of optical adhesive protective group film, comprising: core layer, it is arranged between first surface layer and second surface layer;Core layer includes first polyester;First surface layer and second surface layer include the mass ratio of (45~50) and functional master batch of (50~55) first polyester, and functional master batch includes polyethylene naphthalate, second polyester and modified barium sulfate.By mixing the dispersibility of functional master batch and first polyester is improved, and then the haze and light transmittance of base film are optimized;By polyethylene naphthalate preparation functional master batch, the heat resistance and stability of base film are optimized, and its transmittance is improved and haze is reduced.

The present invention discloses a polyethylene naphthalate composite material with high impact strength and a preparation method thereof, belonging to the field of composite materials. The preparation method includes: by mass parts, mixing 100 parts of polyethylene naphthalate, 10 - 40 parts of polyacrylate elastomer, 0.5 - 1.5 parts of heat stabilizer, and 0.5 - 1 part of antioxidant assistant uniformly, and melt-extruding to obtain the polyethylene naphthalate composite material with high impact strength. In the present invention, the polyacrylate elastomer with low crosslinking density is dispersed into the PEN resin to form a phase morphology with the characteristic of low matrix ligament thickness. This morphology can effectively increase the ductility of PEN, enabling it to exhibit better energy absorption and deformation ability under impact, thereby avoiding brittle fracture. The polyethylene naphthalate composite material provided by the present invention has excellent comprehensive performance, a simple preparation process, and easily available raw materials, and has broad prospects for industrial application.

A foamed polymer composition includes a matrix polymer component, and from 0.01 wt % to 2 wt %, based on the weight of the polymer composition, of a nanostructured fluoropolymer, a nanostructured fluoropolymer encapsulated by an encapsulating polymer, or a combination thereof. The matrix polymer component includes polybutylene terephthalate (PBT), polyetherimide (PEI), polyethylene terephthalate (PET), polycarbonate (PC), poly(p-phenylene oxide) (PPO), polystyrene (PS), polyphenylene sulfide (PPS), polypropylene (PP), polyamide (PA), polytrimethylene terephthalate (PTT), polyethylene naphthalate (PEN), polybutylene naphthalate (PBN), copolymers thereof, or a combination thereof. Methods for forming foamed polymer compositions, including core-back molding methods and extrusion foaming methods, are also described.

The invention discloses an anti-blue-light and anti-ultraviolet polyester film as well as a preparation method and application thereof, and mainly relates to the technical field of layered products consisting of polyester. Compared with the prior art, the anti-blue light and anti-ultraviolet polyester film is obtained by melting, casting and stretching three layers of master batch materials A, B and C, the layer A master batch material is polyethylene glycol terephthalate, synergistic resin and an anti-blocking agent, the layer B master batch material is polyethylene glycol terephthalate, an ultraviolet light absorber and a blue light absorber, and the layer C master batch material is polyethylene glycol terephthalate, a synergistic resin and an anti-blocking agent. And the master batch material of the layer C is polyethylene glycol terephthalate, synergistic resin and polyethylene naphthalate. Compared with the prior art, the method has the advantages that the compactness and uniformity of the internal structure of the film are improved, the dispersity and stability of the functional additive are improved, the defects are reduced, the synergistic improvement of blue light resistance and ultraviolet resistance is finally realized, and meanwhile, the mechanical property of the film is guaranteed.

A multilayer optical film includes a plurality of alternating polymeric first and second layers numbering 10 to 120 in total. Each of the first and second layers having an average thickness of less than about 500 nm. The first layers include polyethylene naphthalate, and the second layers include a copolyester comprising at least one of cyclohexane dicarboxylic acid groups, adipic acid groups, or tetramethyl cyclobutanediol groups, such that for substantially normally incident light and for at least one polarization state, the multilayer optical film has an average optical reflectance of at least about 70% in a wavelength range at least about 200 nm wide.

The invention relates to a modified polycarbonate master batch, a composite polycarbonate material as well as a preparation method and application thereof. The modified polycarbonate master batch is prepared from the following raw materials in parts by weight: 70 to 95 parts of polycarbonate, 5 to 25 parts of polyethylene naphthalate, 0.1 to 2 parts of epoxy resin coupling agent and 0.5 to 3 parts of compatilizer A. The composite polycarbonate material is prepared from the following components in parts by weight: 50 to 90 parts of modified polycarbonate master batch, 5 to 35 parts of polyetherimide and 0.2 to 2 parts of compatilizer B. Polyethylene naphthalate is used for modifying polycarbonate, the high-temperature-resistant modified polycarbonate master batch is prepared, then the modified polycarbonate master batch and polyetherimide are blended, and the prepared composite polycarbonate material has excellent high-temperature resistance and mechanical performance.

The application discloses high-characteristic-viscosity polyethylene naphthalate with a branched structure and a preparation method thereof, and belongs to the technical field of material chemical industry. The preparation method comprises the following steps: 60-65 parts of dimethyl 2,6-naphthalene dicarboxylate, 35-40 parts of ethylene glycol, 0.1-2 parts of three / four branched monomers, 0.01-0.5 parts of a catalyst and 0.01-0.5 parts of an antioxidant are mixed according to the mass fraction, a polymerization reaction is carried out, methanol is removed, and then ethylene glycol is removed. In the application, the three / four branched monomers are added in a certain amount to form a branched chain structure on the polymer main chain, so that the melt viscosity of the polymer is reduced, which is beneficial to the mass transfer and diffusion of the small-molecule byproduct ethylene glycol, and then is beneficial to the forward progress of the polycondensation reaction, and the reaction time is shortened. The branched structure reduces the viscosity, more byproduct ethylene glycol can be removed, the reaction degree is increased, and the product obtained has a higher characteristic viscosity.

The present invention discloses an insulating packaging film for a lithium battery, a preparation process, and a fast-charging lithium battery. The insulating packaging film is used between multiple stacked battery cells within the fast-charging lithium battery to provide insulation and bonding. The film comprises a heat-sealing layer, an adhesive layer, an insulating layer, an adhesive layer, and a heat-sealing layer, which are sequentially laminated from the inside out. The insulating layer is made of one of polyimide, polyethylene terephthalate, and polyethylene naphthalate, with a thickness of 5-30 μm. The heat-sealing layer is made of polypropylene or a combination of polypropylene and polyethylene, with a thickness of 10-40 μm. The adhesive layer is made of a modified polyolefin resin. The insulating packaging film of the present invention has a simple structure, is easy to manufacture, and is much thinner than aluminum film, significantly reducing the space occupied by the battery and increasing the battery's unit volume energy density by 4.75-10%, thereby improving the fast-charging speed of the lithium battery. The heat-sealing layer increases fluidity by adding polyethylene to the polypropylene, thereby improving the packaging efficiency of the battery cells.

The invention relates to the technical field of polymer preparation, in particular to a polyethylene naphthalate polymer and a preparation method and application thereof.The preparation method comprises the steps that nanocellulose is subjected to acid hydrolysis treatment and then subjected to ball milling, and then modified nanocellulose is obtained through silane coupling agent modification treatment; 2, 6-dimethyl naphthalate, ethylene glycol, a bio-based catalyst and the modified nano cellulose are added into a polymerization kettle, after uniform dispersion in a system, heating is performed for transesterification, then a heat stabilizer is added, temperature and pressure are controlled for pre-polycondensation, and the modified nano cellulose is obtained. And finally, regulating and controlling the temperature and the pressure, and carrying out final polycondensation to obtain the polyethylene naphthalate polymer stock solution. The bio-based catalyst comprises citric acid and gallic acid. The polymer is free of heavy metal pollution, low in cost, excellent in strength performance, high in thermal deformation temperature and good in light transmittance. The polyethylene naphthalate polymer is suitable for the fields of flexible electronic packaging, new energy battery diaphragms and the like.

The invention discloses a fluorine-free high-weather-resistant polyethylene naphthalate film and a preparation method thereof. PEN resin is hot-pressed and then quenched to obtain a PEN film; by weight, 0.05-5 parts of nano-silicon dioxide particles, 5-10 parts of methyl methacrylate, 1-10 parts of butyl acrylate, 1-10 parts of acrylic acid, 1-20 parts of 5-(4-(2-hydroxybenzoyl)phenyl)pentyl acrylate, 1-5 parts of KH-570, 0.01-0.1 parts of an oil-soluble free radical initiator and 60-90 parts of a solvent are added to obtain a weather-resistant coating; the PEN base film is immersed in the weather-resistant coating and baked to obtain a fluorine-free high-weather-resistant PEN film. The high-weather-resistant PEN film has excellent resistance to ultraviolet degradation, can meet the use requirements in harsh environments such as strong outdoor ultraviolet rays, high heat and high humidity, and has the advantages of being fluorine-free, having good insulation and excellent barrier properties.

The invention relates to the technical field of photoelectric materials and devices, in particular to a flexible perovskite photovoltaic module barrier film and a preparation method thereof. The flexible perovskite photovoltaic module barrier film comprises a substrate layer, a first barrier layer, a self-repairing layer and a second barrier layer, the substrate layer is any one of a polyethylene glycol terephthalate film and a polyethylene naphthalate film, and the thickness of the substrate layer is 100-150 microns; the first barrier layer comprises any one of a SiO2 thin film and an Al2O3 thin film, and the thickness of the first barrier layer is 20-50 nm; the self-repairing layer is prepared from hydroxyethyl methylacrylate, dodecafluoroheptyl methacrylate, a cross-linking agent and a photoinitiator, the cross-linking agent comprises any one of a disulfide bond-containing cross-linking agent and a dihydrazide cross-linking agent, and the thickness of the cross-linking agent is 2-5 microns. And the second barrier layer comprises any one of an Al2O3 film, a fluorosilicone resin film, a thermoplastic polyolefin film and an organic-inorganic hybrid layer. And the stability and the damp-heat cycle resistance of the flexible perovskite photovoltaic module can be improved.

Described herein are negative electrodes comprising polymer base layers and current collector layers, formed from alloys or multi-layered structures, lithium electrochemical cells (e.g., lithium metal and lithium-ion cells), comprising such electrodes, and methods of fabricating such electrodes. In some examples, a negative electrode comprises a polymer base layer, a current collector layer, and a negative active material layer. The polymer base layer can be formed from one or more of polyethylene terephthalate, polyethylene naphthalate, polypropylene, polycarbonate, polyethylene, polyimide, cellulose, and nylon. The negative current collector layer can be formed from an alloy or a multi-layered structure comprising at least two or more elements selected from the group aluminum, cadmium, chromium, cobalt, copper, indium, lithium, manganese, magnesium, molybdenum, nickel, phosphorous, silicon, silver, sodium, tin, titanium, vanadium, and zinc. For example, the negative current collector layer can be formed from an alloy of titanium and aluminum or a lithium alloy.

To provide a blow molding composed of a resin composition, having excellent transparency and heat resistance, with suppressed necking phenomenon in a drawing process.SOLUTION: A blow molding comprises a blow-molded resin composition. Relative to 100 pts.wt. of (A) polyethylenenaphthalate resin (A component), the resin composition comprises (B) polyether imide resin (B component) 60-150 pts.wt.SELECTED DRAWING: None

The present invention provides a photocurable resin composition that can be cured with visible light, can be used as an adhesive or a sealant for members that include polyethylene naphthalate (PEN) and do not readily transmit ultraviolet light, and also has excellent acidic aqueous solution resistance. This photocurable resin composition includes (A) an oligomer that has at least one (meth)acryloyl group, (B) a thioxanthone photoinitiator, and (C) a tertiary amine that has at least two aromatic rings in the molecule thereof.

The present invention discloses a polyethylene naphthalate film with high light transmittance and a preparation method thereof. The surface of the PEN film is subjected to plasma treatment; dimethyldiethoxysilane, vinyltrimethoxysilane, phenyltrimethoxysilane, diphenyldimethoxysilane and a solvent are mixed, and hydrolysis and condensation are carried out under the action of a catalyst to obtain a phenylvinyl silicone resin sol; a high-boiling solvent is used to displace ethanol in the phenylvinyl silicone resin sol, and filtration is carried out to obtain a high-transparency silicone resin solution; the high-transparency silicone resin solution is coated on the surface of the plasma-treated PEN film, and baking is carried out. The PEN film has excellent light-transmitting performance, and also has excellent heat resistance and dimensional stability, and can be used as an ITO base film, a support film for a liquid crystal display polarizer, and other fields. The method is simple, easy to operate, and the raw materials used are non-toxic and easily available, and a PEN optical-grade film with high cost performance can be prepared.

The application discloses a titanium-magnesium bimetallic catalyst for synthesizing polyethylene naphthalate resin and a preparation method and application thereof, and the preparation method comprises the following steps: carrying out static reaction on a titanium salt, a magnesium salt, a hydrolysis promoter and water at 100-300 DEG C for 12-48 h to obtain a bimetallic gel; adding ethylene glycol into the bimetallic gel and reacting at 80-180 DEG C for 3-6 h, filtering and drying to obtain a titanium-magnesium bimetallic catalyst for polymerization. The titanium-magnesium bimetallic catalyst in the application forms a multiradical ring intermediate through an ester bond and a hydroxyl group, changes an electron cloud arrangement mode, effectively inhibits the occurrence of an etherification side reaction, reduces the generation of a diethylene glycol segment, and avoids the yellowing problem of a PEN resin. The catalyst has the advantages of simple synthesis, remarkable catalytic effect, low colority of a PEN product and the like, and has a wide industrial application prospect.

This application relates to the field of electrochemical technologies, and specifically relates to a polymer composite film, a composite current collector, a preparation method thereof, a positive electrode and an application thereof. The polymer composite film of this application includes a polymer base layer, and a first modification layer and a second modification layer respectively disposed on the opposite two surface of the polymer base layer; the material of the polymer base layer includes one or more of polyethylene terephthalate, poly(1,4-cyclohexanedimethylene terephthalate) and polyethylene terephthalate-1,4-cyclohexanedimethylene terephthalate; the components of the first modification layer and the second modification layer each independently include: a functionalized polymer material; the functionalized polymer material includes one or more of polyethylene naphthalate, poly(m-phenylene adipamide), liquid crystal polymer, polyformaldehyde, polyphenylene sulfide and polyphenylene ether. The polymer composite film of this application can be effectively disconnected when being damaged by strong external force, and thus can effectively prevent the occurrence of battery thermal runaway.

An optical polyester film, the polyester film comprising a core layer and at least one surface layer, the core layer and surface layer being prepared by melt extrusion and biaxial stretching with a co-extrusion die, the core layer comprising 30wt%-90wt% of a conventional polyester and 10wt%-70wt% of semi-crystalline polyethylene naphthalate; the surface layer comprising 5wt%-55wt% of a modified polyester, 35wt%-94.9wt% of a conventional polyester and 0.1wt%-10wt% of a functional masterbatch; the functional masterbatch containing slip particles; the modified polyester being obtained by melt extrusion of 30wt%-90wt% of a conventional polyester and 10wt%-70wt% of a modified methacrylic resin, the modified polyester having an intrinsic viscosity of 0.70dL / g-0.85dL / g. The optical polyester film has the characteristics of low exudation, excellent barrier property and good optical performance.

The present invention discloses a polymer composition comprising two or more polymers that can be used in preforms and containers for hot-fill beverages to increase the recycled content, shelf life of the contents, and hardness of the container. One polymer can be polyethylene terephthalate, and the second polymer can be polyethylene furanoate or polyethylene naphthalate. The polymers can be blended to form a cubic blend. A reheat agent can be used in the polymer composition. Methods for making preforms and bottles are also disclosed. The polymer composition can be made with increased recycled content without sacrificing the transparency of the material and can be used to make transparent preforms and bottles.

The invention relates to the technical field of high polymer materials and polyester synthesis, in particular to polyethylene naphthalate resin and a preparation method and application thereof.According to the method, a small amount of flexible long-chain diol monomers are introduced into a PEN prepolymer molecular chain in the liquid phase polymerization stage, so that an obtained prepolymer has high chain segment flexibility; then carrying out isothermal crystallization to preferentially grow into a loose beta crystal structure; and finally, carrying out solid-phase polycondensation reaction to obtain the polyethylene naphthalate resin. Wherein a flexible chain segment is introduced, and the crystallization behavior of a PEN prepolymer is regulated, so that a beta crystal structure with a continuous amorphous channel is more easily formed, the rapid diffusion and removal of an ethylene glycol byproduct are promoted, the solid phase polycondensation rate is obviously accelerated, the molecular weight is improved, and the obtained PEN resin has excellent thermal stability, color and luster and mechanical properties; the method is suitable for preparing high-strength and high-modulus fibers and engineering plastics, and solves the problems of long process period and poor controllability in the PEN preparation process in the prior art.

A power transmission belt comprising a body (102) made of a sizing material having a main elastomer, a tooth portion (104), and a belt back (107) and a plurality of longitudinal cords (103) embedded in the belt body wherein: the main elastomer constitutes at least 70% by weight of all elastomer materials of the body; the main elastomer is an ethylene-alpha-olefin copolymer; the body comprises at least 12% by weight of fibers; the fiber is selected from the group consisting of glass, aramid fiber, polyester, carbon fiber, polybenzobisoxazole (PBO), polyamide, polyketone (POK), polyether-ether-ketone (PEEK), polyvinyl alcohol (PVA), liquid crystal fiber (LPC), polyethylene naphthalate (PEN) and aliphatic polyamide; the size of the fibers is between 1mm and 6mm; the teeth are coated with a coating material selected from the group consisting of woven fabrics, knitted fabrics and non-woven fabrics; the coating material is treated by adopting a polymer containing nitrile groups; the cladding material is coated with a second treatment layer (109) comprising an elastomer and an antifriction material.

The invention provides a high molecular weight polyethylene naphthalate resin and a solid phase polycondensation preparation method thereof, the method takes dimethyl 2, 6-naphthalate, ethylene glycol and a diol monomer with a large steric hindrance side group as raw materials, and the high molecular weight polyethylene naphthalate resin is obtained through the steps of pre-polymerization (liquid phase polymerization), isothermal crystallization treatment and solid phase polycondensation treatment; according to the invention, a large steric hindrance side group is introduced in a pre-polymerization stage, and subsequent crystallization regulation and control and solid phase polycondensation processes are combined, so that the polycondensation reaction can be effectively promoted, the molecular weight of the PEN resin is obviously improved, and a high molecular weight product with the number-average molecular weight of 46265-58421 g / mol is finally obtained; the method is simple in process step, and the prepolymer obtained by prepolymerization can be directly extruded and diced to form particles with uniform particle size, so that the subsequent process operation is facilitated; reaction conditions involved in each step are easy to control, the method can adapt to conventional industrial production equipment, and the product is stable in performance and good in repeatability and has a wide industrial application prospect.

This invention provides a high-temperature and UV-resistant road surface maintenance seal and its preparation method, comprising, from bottom to top, an original road surface layer, a first elastomeric polymer material layer, an emulsified asphalt material layer, a sand layer, and a second elastomeric polymer material layer. Both the first and second elastomeric polymer material layers are made of elastomeric polymer materials. The elastomeric polymer includes a base material, a modifying material, and additives. The base material includes polyethylene naphthalate. The modifying materials include rubidium borate and benzothiorrole. The rubidium borate / benzothiorrole composite material used in the modified material of this invention, in addition to leveraging the UV-resistant and high-temperature resistant properties of rubidium borate and benzothiorrole, also acts as a sound-absorbing and noise-reducing agent for polyethylene naphthalate in the base material, producing a synergistic enhancement effect.