145 results about "Polyethylene membrane" patented technology

The invention relates to a liquid metal gel material, a preparation method thereof and a thermal interface material, and belongs to the field of thermal interface materials. Wherein the liquid metal gel material comprises a modified polyethylene film, and the modified polyethylene film comprises a polyethylene film and metal particles attached to at least part of the surface of the polyethylene film; the modified polyethylene film is at least partially filled with the liquid metal. The liquid metal gel material provided by the invention has the advantages of low thermal resistance, high thermal conductivity, excellent mechanical properties and high stability in a dynamic environment, and can meet the use requirements of high-end fields on thermal interface materials.

The invention discloses a fireproof flame-retardant battery diaphragm, a preparation method thereof and a fireproof flame-retardant battery, and relates to the technical field of battery diaphragms. When the fireproof flame-retardant battery diaphragm is prepared, boric acid diglyceride and chlorinated trimellitic anhydride mixed liquor react to prepare a flame-retardant monomer; the preparation method comprises the following steps: polymerizing 4, 4 '-diaminodiphenyl ether and a flame-retardant monomer, and carrying out electrostatic spraying to prepare polyamide acid microspheres; dehydrating and drying the polyamide acid microspheres to obtain polyimide microspheres; performing etching-acidification on the polyimide microspheres to prepare carboxylated polyimide microspheres; allyl phosphoric acid and acrylic acid are copolymerized and grafted on the surface of a polyethylene film to prepare a modified polyethylene film; and coating the surface of the modified polyethylene film with the carboxylated polyimide microspheres to prepare the fireproof flame-retardant battery diaphragm. The prepared fireproof flame-retardant battery diaphragm has excellent flame retardance, wetting performance and thermal stability.

The invention relates to the field of high polymer material processing, and discloses an antifogging antibacterial PE film production process, which comprises: S1, raw material blending and mixing: blending low density polyethylene, linear low density polyethylene, a bio-based antifogging agent, a modified zinc oxide-graphene composite antibacterial agent, a polylactic acid compatibilizer and a slipping agent according to a ratio, mixing through a double-screw extruder, and adopting temperature gradient control; s2, three-layer co-extrusion film blowing: preparing a polyethylene film with a three-layer structure by adopting a three-layer co-extrusion film blowing process; s3, traction and rolling are conducted, specifically, the film is pulled through a traction device, the traction speed is controlled in a segmented mode, and rolling is center surface friction rolling; and S4, slitting and packaging. By adopting the modified zinc oxide-graphene composite antibacterial agent and utilizing the synergistic effect of zinc oxide nanoparticles and graphene, the antibacterial rate of the film reaches 90%-95% and is improved compared with 70%-75% of common zinc oxide, and the antibacterial ability of the film is enhanced.

A freight vehicle has a cargo space that is convertible for handling piece goods and is also suitable for hauling liquid bulk material. A conventional cargo space is equipped with a drop-down frame and flexible liquid enclosure that is stowed in the ceiling of the trailer while hauling a full load of palletized or piece goods materials that can be lowered to the floor for transporting liquid bulk loads. Generally, the long tubular (round and or oval in shape from an end view) can be fitted with a polyethylene film disposable liner. The disposable poly liner will ensure the liquid freight is free from contamination. This concept not only eliminates the need for a liquid tanker to be washed out between each load but also allows for the hauling of piece goods freight when the frame system is raised back to the ceiling.

The invention discloses a steam eyeshade with effects of soothing nerves and helping sleep and a preparation method of the steam eyeshade. The steam eyeshade comprises an eyeshade body, and ear hooks are connected to the two sides of the eyeshade The eyeshade body comprises an inner layer and an outer layer, and a heat insulation layer, a micro-bead massage layer, a double-U-shaped heating unit and a filtering layer are sequentially arranged from the inner layer to the outer layer. And a far infrared ceramic powder coating is arranged on one side, facing the double-U-shaped heating unit, of the filter layer. The inner layer and the outer layer are non-woven fabrics, the heat insulation layer is a polyethylene-polyvinylidene fluoride microporous composite membrane, and the filter layer is a polyethylene microporous membrane. Wherein the micro-bead massage layer is mainly prepared from aluminum oxide micro-beads with the diameter of 0.8-1.2 mm, compound essential oil, natural plant extract liquor and polyvinyl alcohol. The steam eyeshade prepared by the invention is comfortable to wear, safe and environment-friendly, and can keep constant temperature for more than 30 minutes; the eye mask can massage eye skin, relieve fatigue, fade fine lines around eyes and dark circles, soothe the nerves and help sleep.

The invention relates to the technical field of polyethylene film materials, in particular to a weather-resistant flame-retardant PE composite film and a preparation method thereof.The preparation method comprises the following steps that S1, a PE-based copolymer, an antioxidant and a light stabilizer are mixed and then discharged; s2, mixing LDPE resin, magnesium hydroxide, a silane coupling agent and zinc stearate, and discharging; s3, the outer-layer mixture and the core-layer mixture are put into a double-screw extruder for melt extrusion granulation and drying, and outer-layer master batches and core-layer master batches are obtained; and S4, respectively putting the outer-layer master batch and the core-layer master batch into an extruder for extrusion, and carrying out three-layer co-extrusion casting film forming, cooling shaping and rolling to obtain the weather-resistant flame-retardant PE composite film. The weather-resistant flame-retardant PE composite film obtained by the preparation method disclosed by the invention has relatively good weather resistance and flame retardance.

The present invention relates to a layered polyethylene MDO film comprising high amounts of a specific ethylene copolymer with a narrow molecular weight distribution in a layer. This film provides a high stiffness and excellent adhesion properties. The invention further relates to a barrier film comprising a metal layer or barrier coat and the aforementioned layered polyethylene MDO film, to a process for forming a barrier film from said layered polyethylene MDO film, to a laminate and to an article comprising the barrier film. The oxygen and vapor permeability of the barrier film are low so that the barrier film is particularly suited for packaging foodstuff or other oxygen sensitive products.

The invention relates to the technical field of waterproof coiled materials, in particular to a self-adhesive waterproof coiled material and a preparation method thereof. The waterproof roll comprises a polyethylene film, a main body layer, a self-adhesive layer and an isolating film from top to bottom, wherein the main body layer is obtained by extruding, granulating and melting matrix asphalt, butyl rubber, modified vermiculite, a borate compound, an antioxidant and sulfur, dip-coating gridding cloth on two sides, and calendaring and shaping; and the self-adhesive layer is obtained by melting and curing SEBS, hydrogenated petroleum resin, polyisobutene, modified vermiculite, a borate compound, a plasticizer and an antioxidant. Compared with the prior art, the prepared self-adhesive waterproof coiled material has better resistance to damp-heat aging and salt erosion, and is especially suitable for coastal, underground, high-humidity and other severe environments.

An assembly includes an acoustic device. The acoustic device can include a polyethylene membrane. The polyethylene membrane can have first direction and a second direction, the second direction being orthogonal to the first direction. The polyethylene membrane can have a surface area per volume of at least 39×106 / m. The polyethylene membrane can have a geometric mean tensile modulus of 250 to 750 MPa. The polyethylene membrane can have a maximum tensile modulus in the first direction of 440 to 915 MPa. The polyethylene membrane can have a maximum tensile modulus in the second direction of 275 to 515 MPa. The polyethylene membrane can be an expanded polyethylene membrane.

The invention relates to the technical field of polyethylene films, and particularly discloses a low-precipitation polyethylene film and a preparation method thereof. The low-precipitation polyethylene film is prepared from the following raw materials: polyethylene, silicon carbide nanowires, nano talcum powder, an antioxidant and glyceryl stearate. The alkane precipitation amount of the obtained polyethylene film is 5 ppm or below, and precipitation of alkane molecules of the polyethylene film is obviously reduced.

The utility model relates to a novel PE (Poly Ethylene) reticulated protective film, which comprises a polyethylene film layer and an adhesive layer coated on one side of the polyethylene film layer, the adhesive layer is of a reticulated structure, the polyethylene film layer is provided with arrayed small holes, the aperture of the small holes is 0.1-0.3 mm, and the distance between adjacent small holes is smaller than the distance between corresponding sides of a single reticulated hole of the adhesive layer. As the arrayed small holes are formed in the polyethylene film layer, and the distance between the adjacent small holes is smaller than the distance between the corresponding edges of the single reticulate pattern hole of the adhesive layer, each mesh hole formed by the reticulate pattern is provided with the small holes, the protective film is attached to the surface of a part workpiece during production, and then the part workpiece is put into a negative pressure box, so that the surface of the part workpiece is protected; under the action of negative pressure, residual small bubbles attached to a protective surface can be pumped away, so that a film is tightly attached to the protective surface, the purpose of film pasting can be achieved without excessive mechanical actions in the film pasting process, protective film pasting of easily-damaged products is achieved, the film pasting quality is good, the workpiece effect is high, and parts are not prone to being damaged.

The utility model relates to the technical field of veterinary diagnosis equipment, and discloses a forming device for producing a polyethylene film plastic bag, which comprises a device main body and a wind-up roller, the device main body is provided with a mounting rack, the mounting rack is provided with a rotating motor, an action output shaft of the rotating motor is provided with a rotating disc, and the rotating disc is provided with a wind-up roller. Four sliding rods are arranged on the rotating disc in the circumferential direction at intervals, mounting blocks are mounted on the sliding rods, mounting grooves are formed in the mounting blocks, a connecting shaft is arranged at one end of the winding roller in a protruding mode, the connecting shaft is clamped in the mounting grooves, and a hexagonal butt joint block is arranged at the other end of the winding roller in a protruding mode. When the winding device is used, the other winding roller on the rotating disc can be driven by the rotating motor to be in butt joint with the winding motor, and the limiting rod is pulled out to remove the connection and fixation between the limiting clamping block and the mounting block, so that the connecting shaft can be separated from the mounting block, and the purpose of detaching the winding roller from the device for replacement is achieved.

This invention discloses a fire-retardant battery separator, its preparation method, and a fire-retardant battery, relating to the field of battery separator technology. In preparing the fire-retardant battery separator, this invention involves reacting a mixture of diglyceride borate and trimellitic anhydride chloride to obtain a flame-retardant monomer; polymerizing 4,4'-diaminodiphenyl ether and the flame-retardant monomer, followed by electrostatic spraying to obtain polyamic acid microspheres; dehydrating and drying the polyamic acid microspheres to obtain polyimide microspheres; etching and acidifying the polyimide microspheres to obtain carboxylated polyimide microspheres; grafting propylene-based phosphoric acid and acrylic acid copolymers onto the surface of a polyethylene film to obtain a modified polyethylene film; and coating the carboxylated polyimide microspheres onto the surface of the modified polyethylene film to obtain the fire-retardant battery separator. The fire-retardant battery separator prepared by this invention exhibits excellent flame retardancy, wetting, and thermal stability.

The utility model discloses a cold-resistant shock-resistant retort pouch which comprises a composite film, the composite film is matched together to form a pouch body, and the composite film comprises a PET (polyethylene terephthalate) film layer, a first asynchronous stretching double-sided corona nylon film layer, a second asynchronous stretching double-sided corona nylon film layer, a polyethylene lamination layer and a polyethylene film layer, the polyethylene film layer is arranged between the PET film layer and the polyethylene film layer, the first asynchronous stretching double-sided corona nylon film layer is arranged between the PET film layer and the polyethylene film layer, and the second asynchronous stretching double-sided corona nylon film layer is arranged between the polyethylene film layer and the polyethylene film layer. The composite film is formed by compounding the PET film layer, the first asynchronous stretching double-sided corona nylon film layer, the second asynchronous stretching double-sided corona nylon film layer, the polyethylene spraying film layer and the polyethylene film layer, and after the composite film is prepared into the retort pouch, the whole retort pouch still has good sealing performance and good impact resistance at low temperature.

The present invention relates to a multilayer polyethylene film comprising in order at least an outer layer, a core layer and a sealing layer, wherein the sealing layer comprises: i) at least 30.0 wt% of a first multimodal linear low density polyethylene terpolymer relative to the total weight of the sealing layer; and ii) at least 10.0 wt% of a first plastomeric body having a density of 910 kg / m3or less (ISO 1183) relative to the total weight of the sealing layer; wherein the core layer comprises: a) at least 8.0 wt% of a second plastomeric body having a density of 910 kg / m3or less (ISO 1183) relative to the total weight of the core layer, or b) at least 8.0 wt% of a multimodal linear low density polyethylene (LLDPE) binary copolymer relative to the total weight of the sealing layer; and c) a second multimodal polyethylene terpolymer. 3 The present invention relates to a multilayer polyethylene film comprising in order at least an outer layer, a core layer and a sealing layer, wherein the sealing layer comprises: i) at least 30.0 wt% of a first multimodal linear low density polyethylene terpolymer relative to the total weight of the sealing layer; and ii) at least 10.0 wt% of a first plastomeric body having a density of 910 kg / m3or less (ISO 1183) relative to the total weight of the sealing layer; wherein the core layer comprises: a) at least 8.0 wt% of a second plastomeric body having a density of 910 kg / m3or less (ISO 1183) relative to the total weight of the core layer, or b) at least 8.0 wt% of a multimodal linear low density polyethylene (LLDPE) binary copolymer relative to the total weight of the sealing layer; and c) a second multimodal polyethylene terpolymer. 3 ​

The utility model discloses a heat preservation type heating and ventilation pipeline for heating and ventilation engineering, which comprises an inner conveying pipe, a composite heat preservation layer, a vapor barrier layer and an outer protective sleeve which are sequentially and fixedly arranged from inside to outside, the composite heat preservation layer is formed by alternately laminating aerogel felt layers and closed-cell foaming rubber layers, and a connecting flange is fixedly arranged at the end part of the pipeline. Compared with the prior art, the composite heat preservation layer has the advantages that the composite heat preservation layer is formed by alternately stacking the aerogel felt layers and the closed-cell foaming rubber layers, heat loss in the heat energy conveying process is greatly reduced, and the energy utilization efficiency is improved; the vapor barrier layer is of a double-sided barrier structure formed by hot-pressing and compounding an aluminum foil layer and a polyethylene film, water vapor invasion is effectively prevented, the heat preservation layer is prevented from being affected with damp, the outer protective sleeve is provided with a rapid detection opening and a temperature and humidity sensor is arranged in the outer protective sleeve, real-time monitoring of the temperature, humidity and other states in the pipeline is achieved, and potential problems can be found and handled in time.

The invention relates to a nickel-based alloy welding material for a garbage incinerator and a production process of the nickel-based alloy welding material, and belongs to the technical field of welding materials, the nickel-based alloy welding material comprises a central stranded welding wire, the periphery of the central stranded welding wire is sleeved with a fastening net, the periphery of the fastening net is wrapped with a polyethylene film, the periphery of the polyethylene film is provided with outer-layer stranded welding wires, and the periphery of the outer-layer stranded welding wires is provided with inner-layer stranded welding wires. A combustion improver is arranged in a hole formed between the polyethylene film and the central stranded welding wire, after the first peripheral wire is stranded on the central welding wire, the first peripheral wire is pressed, so that the first peripheral wire enables the peripheral wall of the central welding wire to be sunken to form a groove, and therefore, through the cooperation between the first peripheral wire and the groove, the combustion improver is improved, and the welding quality is improved. The first peripheral wire and the central welding wire are positioned through the clamping hoop, the second peripheral wire is positioned through the abutting of the first peripheral wire and the second peripheral wire, and the radial positioning of the peripheral welding wires is realized through the clamping hoop, so that the arrangement of a central welding wire guide strip is avoided, and the production difficulty and the production cost are reduced.

The application discloses a polyethylene film material suitable for high-speed gravure printing and a preparation method. The polyethylene film material is prepared from polyethylene with a density of 0.92-0.97 g / cm3 as raw material by adopting a 'five-layer co-extrusion blow molding+online longitudinal stretching' process, through step density layer design, the thickness ratio between layers is 1:1:2:1:1, and the polyethylene film material with a thickness of 20-25 mu is prepared through online twelve-roll longitudinal stretching. The polyethylene film material prepared by the application has high tensile strength (longitudinal), good elongation at break, and a 1% quadratic modulus (longitudinal) of 1356 MPa, and has good material rigidity. The polyethylene film material can meet the printing speed of 300-500 m / min in an ester-soluble ink system of a high-speed gravure printing machine, and the overlay precision is less than or equal to 0.2 mm. The polyethylene film material can provide technical guidance for the realization of polyethylene single material packaging.

The utility model belongs to the technical field of building structures, and particularly provides a clean board with a hot melt film, which comprises a rock wool core board, panels are respectively attached to two side surfaces of the rock wool core board perpendicular to the thickness direction of the rock wool core board, the thickness of each panel is 0.4 mm-0. 6mm, keels are respectively arranged on four side surfaces of the rock wool core board parallel to the thickness direction of the rock wool core board, and the hot melt film is arranged on the keels. The thickness of the keel ranges from 0.55 mm to 0.65 mm. The surface, away from the rock wool core plate, of the face plate is coated with a polyethylene coating or a polyvinylidene fluoride coating with the thickness ranging from 18 micrometers to 22 micrometers, a hot melt adhesive film with the thickness ranging from 28 micrometers to 32 micrometers is arranged between the face plate and the rock wool core plate, and the hot melt adhesive film is a modified polyethylene film or an EVA adhesive film.

The invention relates to a functional high-strength polyethylene film material continuous forming method which comprises the following steps: S1, mixing a photosensitizer and a grafting monomer to prepare a turbid liquid, spraying the turbid liquid into polyethylene, and stirring and dispersing to obtain a composite material; s2, adding the composite material in the S1 into a screw extruder for extrusion to obtain a thick film material, and then performing continuous isobaric pressing to obtain a thin film material; and S3, carrying out multi-time hot drafting on the thin film material in the S2 to obtain a film material product, carrying out ultraviolet radiation in an inert atmosphere, and rolling to obtain the functionalized high-strength polyethylene film material. Compared with the prior art, continuous forming of the high-strength UHMWPE film material can be achieved at low temperature, the preparation process does not need a solvent and is environmentally friendly, the surface of a product has polarity, and the interface bonding force is high when the composite material product is manufactured.

The invention relates to the technical field of polyethylene films, and particularly discloses an anti-ultraviolet polyethylene film for a shower curtain and a preparation method of the anti-ultraviolet polyethylene film. The anti-ultraviolet polyethylene film for the shower curtain is prepared from the following raw materials: PE resin, POE, bamboo fiber powder, polyamide fiber and an anti-ultraviolet additive. The polyethylene film obtained by the invention has the advantages that the anti-ultraviolet shielding rate is up to 97%, the anti-ultraviolet shielding rate of the polyethylene film is improved, the retention rate of tensile strength after aging is up to 99.4%, the durability reaches 7 years or more, and the polyethylene film is durable. And moreover, the transverse elongation, the longitudinal elongation, the transverse tensile force and the longitudinal tensile force of the obtained polyethylene film can reach 850%, 652.9%, 35.5 N and 36.1 N respectively, and the polyethylene film has relatively high strength and toughness.

The present invention aims to provide a polyethylene film in which heat-induced curl is more suppressed. The present invention provides a biaxially oriented polyethylene film comprising polyethylene resin, wherein (a) a heat shrinkage ratio (MDHS / TDHS) of heat shrinkage in a longitudinal direction (MDHS) measured at 100°C according to JIS Z 1712 (2009) to heat shrinkage in a width direction (TDHS) measured at 100°C according to JIS Z 1712 (2009) is 0.35 or more and 2.50 or less, and / or (b) a planar orientation coefficient ΔP is 0.006 or more and 0.035 or less as calculated from refractive indices in a width direction (Ny), a longitudinal direction (Nx), and a thickness direction (Nz) measured according to JIS K 7142 (2014), using the following formula: planar orientation coefficient ΔP = (Nx + Ny) / 2 - Nz.

A biaxially oriented shrink film is provided comprising a metallocene linear low density polyethylene having a density in the range of from 0.900 g / cm3 to 0.940 g / cm3, a melt index (I2) in the range of from 0.1 g / 10 min to 5.0 g / 10 min, a melt index ratio (MIR) in the range of from 20 to 38, a molecular weight distribution (MWD) in the range of from 2.0 to 4.5, and a wide orthogonal comonomer distribution. In some embodiments, the shrink film provides sufficient shrink force at a temperature of less than 160 DEG C.

The utility model relates to a container, which comprises a bag body, the bag body is formed by overlapping two end parts of a sheet body and then carrying out thermocompression joint, and the container is characterized in that the sheet body sequentially comprises a polyethylene outer film, a polyethylene terephthalate film, an aluminum film, a nylon film and a polyethylene inner film from outside to inside. According to the utility model, the polyethylene outer film is attached to the polyethylene terephthalate film, and the polyethylene inner film is attached to the nylon film, so that the polyethylene film can be broken along a fracture generated by the polyethylene terephthalate film or the nylon film when a user tears the packaging bag, and the problem that the polyethylene film of the existing bag body is difficult to tear neatly is avoided.

The invention provides a chemical-solvent-resistant heat-sealing adhesive tape for chemical protective clothing and a preparation method of the heat-sealing adhesive tape, and belongs to the technical field of chemical protective articles. The adhesive tape comprises a surface layer and an adhesive layer coated on the surface layer, the surface layer is a polyethylene film; the bonding layer comprises the following components in parts by weight: 0-30 parts of linear low density polyethylene; 70 to 100 parts of a polyolefin elastomer; the melt index of the polyolefin elastomer is 10-30 g / 10 min. A composite structure is formed by the bonding layer and the surface layer, so that the technical advantages of proper adhesive pressing temperature, high adhesion and excellent chemical solvent resistance are realized.

The invention discloses a photosensitive resin composition containing an anthryl chalcone photosensitizer and application of the photosensitive resin composition. The photosensitive resin composition comprises an anthryl chalcone photosensitizer, and the anthryl chalcone photosensitizer at least comprises an anthracene derivative as shown in a general formula (III). Wherein R1 is one of straight chain or branched chain alkyl of C1 to C5, N-methylpyrrole-2-yl, furan-2-yl, benzofuran-2-yl, thiophene-2-yl, naphthalene-2-yl, phenyl and substituted aryl, and R2 is one of C1-C5 alkyl, N-methylpyrrole-2-yl, furan-2-yl, benzofuran-2-yl, thiophene-2-yl, naphthalene-2-yl, phenyl and substituted aryl; the anthryl chalcone is adopted as the photosensitizer of the photosensitive resin composition, the photosensitizer cannot migrate into a polyethylene (PE) film, and in the electroplating process after exposure and development, small molecular fragments cannot be separated out to pollute electroplating liquid, so that the undesirable phenomena of short circuit, open circuit and the like of a corrosion-resistant pattern are avoided, and the yield of a product is remarkably improved.

A high-exhaust antistatic polyethylene reticulated protective film belongs to the technical field of preparation of functional protective films and comprises a base material layer serving as a substrate, and a grid layer, an antistatic layer and a pressure-sensitive adhesive layer are sequentially arranged on the base material layer. The thickness of the pressure-sensitive adhesive layer is between 1 mu m and 10 mu m; the base material layer is a polyethylene film, and the thickness of the base material layer ranges from 30 micrometers to 130 micrometers. The invention provides a high-adaptability protective film suitable for electronic components, precision metal and plastic surfaces, and particularly relates to a polyethylene protective film based on a grid structure and a special adhesive formula, which is used for solving the problems of poor air permeability and the like.

The utility model discloses a high-barrier sewing forming packaging bag which comprises an upper film body and a lower film body, and the end edges of the upper film body and the lower film body are heat-sealed and encircled to form a bag body; the upper film body comprises an upper outer layer, an upper barrier layer and an upper functional layer which are sequentially arranged from the outside of the bag body to the inside of the bag body; the lower die body comprises a lower outer layer, a lower blocking layer, a lower inner layer and a lower functional layer which are sequentially arranged from the outside of the bag body to the inside of the bag body; and the upper functional layer and the lower functional layer are polyethylene films containing drying agents. The drying agent particles are mixed into the PE to form the upper functional layer and the lower functional layer, so that the validity period of the absorption instrument can be prolonged; the barrier layer is made of cold forming aluminum, so that a plane bag can be replaced by three-dimensional packaging, and high-barrier water and oxygen resistance can be realized; and the outer layer of the bag body adopts the nylon NY design, so that the puncture-resistant and wear-resistant effects of the packaging bag are improved.

Disclosed herein is a bag having an inside and an outside as well as first seal and a second seal. The first seal of the bag has a higher heat seal strength than the second seal of the bag such that the second seal can be more easily separated than the first seal. The bag can be used for flexible packaging and can be formed from polyethylene films having specific heat seal layers and polymers.

The invention discloses a nanoparticle modified antibacterial packaging film and a preparation method thereof, and relates to the technical field of packaging materials. When the nano particle modified antibacterial packaging film is prepared, nano graphene sequentially reacts with 2-(2-chloroethyl) furan and 1, 2-benzisothiazole-3-ketone, and modified nano graphene is prepared; the preparation method comprises the following steps: reacting barbaloin with 2-chloro-4, 6-bis (oxyalkan-2-yl methoxy)-1, 3, 5-triazine to obtain functionalized barbaloin; the preparation method comprises the following steps: sequentially reacting linear low-density polyethylene with dimethyl allyl phosphate and 3-mercapto-1-propanol to prepare modified polyethylene; uniformly mixing the modified polyethylene, the functionalized barbaloin and the modified nano graphene, and carrying out tape casting to obtain a polyethylene film material; and coating the fluorine-containing coating liquid on the surface of a polyethylene film material to prepare the nano particle modified antibacterial packaging film. The nano particle modified antibacterial packaging film prepared by the invention has excellent antibacterial, flame-retardant, water vapor barrier and mechanical properties.