30results about How to "Lower volume resistivity" patented technology

The invention discloses a room-temperature-cured high-strength high-thermal-conductivity and high-electric-conductivity silver adhesive which is characterized by comprising the following components in parts by weight: 100 parts of hydroxyl-terminated polydimethylsiloxane, 2-6 parts of carbon nanotubes, 200-450 parts of conductive particles, 1-5 parts of a silane coupling agent, 5-12 parts of a cross-linking agent and 0.5-5 parts of a catalyst. The invention further discloses a preparation method of the room-temperature-curing high-strength high-thermal-conductivity and high-electric-conductivity silver adhesive. The room-temperature-cured high-strength high-thermal-conductivity and high-electrical-conductivity silver adhesive has the advantages of short curing time, low volume resistivity, high bonding strength and good electrical conductivity. The product is tested after being placed in an outdoor environment for 12 months for a long time, the volume resistivity and the bonding strength of the conductive silver adhesive disclosed by the invention are hardly influenced, and the conductive silver adhesive shows excellent weather resistance; the product has high stability and can be used for a long time.

The invention belongs to the technical field of materials, and discloses a graphene conductive adhesive, which is prepared from the following raw materials in parts by weight: 45 to 55 parts of modified epoxy resin, 8 to 15 parts of polyurethane, 10 to 18 parts of acrylic resin, 18 to 30 parts of graphene conductive filler and 2 to 5 parts of N, N-dimethylaniline. The graphene conductive adhesive disclosed by the invention is low in volume resistivity and good in conductivity; when the composite material is used as a supercapacitor electrode material, the cycle charge-discharge frequency is more under a specific charge-discharge condition, and the composite material has good durability; through testing at low temperature, the change rate of the heat conductivity is low, and good stability is achieved; good bonding performance is shown at different temperatures; the graphene conductive adhesive is good in dispersity and high in practicability.

The main and fine grid integrated HJT silver paste comprises the following components in percentage by mass: 85-92% of silver powder, 2-6% of organic resin, 0.5-2% of a curing agent, 0-1% of a thixotropic agent, 0-1% of an epoxy catalyst, a silicone oil catalyst and 2-5% of an organic solvent. The silver powder at least comprises three kinds of powder with different particle sizes, wherein the ball powder and the ball-like powder with the D50 being 2-6 micrometers and the tap density being 5-6 g / mL account for 30%-50% in one kind, the ball powder and the ball-like powder with the D50 being 0.1-1 micrometer and the tap density being 3-5 g / mL account for 20%-40% in the second kind, and the sheet powder with the D50 being 0.5-2 micrometers and the tap density being 3-5 g / mL account for 10%-30% in the third kind.

The invention discloses a low-temperature cured bi-component epoxy resin conductive adhesive. A component A and a component B are mixed according to a ratio of 1: 1 and then cured at room temperature; the component A at least comprises the following components: novolac epoxy resin, epoxy resin, core-shell toughened epoxy resin, a diluent, a coupling agent, a thixotropic agent and a conductive filler; the component B at least comprises the following components in parts by mass: a curing agent and an accelerant; wherein the core-shell toughened epoxy resin is bisphenol A epoxy resin with uniform nanoscale core-shell particle dispersity; the invention also discloses a preparation method of the low-temperature cured bi-component epoxy resin conductive adhesive. The curing of the conductive adhesive at low temperature or room temperature is realized, the internal reaction degree of the matrix is high, the mechanical strength and conductivity of the conductive adhesive are met at the same time, and effective bonding is realized and relatively good performance is kept after electronic components are cured in application scenes with use temperature requirements.

The invention belongs to the technical field of high polymer materials, and particularly relates to a black phosphorus polyether-ether-ketone modified antistatic composite material and application. The composite material comprises the following raw materials in parts by mass: 100 parts of modified polyether-ether-ketone, 3-8 parts of modified black phosphorus nanosheets, 0.5-3 parts of functionalized graphene quantum dots, 0.5-2 parts of an interface modifier, 0.5-1 part of an antioxidant and 1-3 parts of a processing aid. According to the material, the problem of high surface resistivity of a traditional PEEK material is solved, the material is endowed with excellent antistatic performance, and meanwhile, the original mechanical strength is kept. Through the improvements, the composite material shows important actual value and market prospect in the high-end application fields of automobile parts, engine accessories, power battery shells, charging guns, charging piles and the like.

The invention belongs to the technical field of rubber sheets, and particularly relates to a Z-axis insulating nickel-carbon conductive rubber sheet with PI as a base material and a preparation method of the Z-axis insulating nickel-carbon conductive rubber sheet. The Z-axis insulating nickel-carbon conductive rubber sheet taking PI as the base material comprises the following components in parts by weight: 120 parts of silicone rubber, 40-60 parts of vinyl resin, 20-40 parts of hydrogen-containing silicone oil, 5-15 parts of a coupling agent, 1-10 parts of a catalyst, 1-10 parts of an inhibitor and 550-750 parts of nickel-carbon powder. The nickel-carbon conductive rubber sheet disclosed by the invention is good in adhesive force with a PI base material, Z-axis insulation, low in volume resistivity and high in shielding effectiveness, meets the use effect of electronic components with high electromagnetic shielding requirements, and realizes the insulation effect between two cavities.

The invention belongs to the technical field of conductive adhesives, and particularly relates to an ultralow-hardness silver-copper conductive adhesive and a preparation method thereof. The ultralow-hardness silver-copper conductive adhesive comprises the following components in parts by weight: 50-100 parts of liquid silicone rubber, 30-80 parts of a diluent, 1-10 parts of a chain extender, 0.1-5 parts of a heat-resistant agent, 0.1-5 parts of a coupling agent, 0.1-5 parts of an inhibitor and 100-400 parts of conductive filler. The shielding performance of the ultralow-hardness silver-copper conductive adhesive can reach 100 dB, the tensile strength is larger than 1 Mpa, the volume resistivity is smaller than 0.005 ohm.cm, and the hardness is smaller than 30 ShoreA. On the premise that the requirements of products for mechanical strength and shielding effectiveness are met, the ultralow-hardness silver-copper conductive adhesive has lower product hardness, the internal stress of the adhesive to electronic components is greatly reduced, and market requirements are met.

The invention belongs to the field of solar photovoltaic cell paste, and particularly relates to heterojunction-based silver-coated copper paste and application thereof. The silver-coated copper paste comprises the following components: silver-coated copper powder, submicron silver powder, a binder, a curing agent and a solvent. The silver-coated copper powder is a combination of low-silver silver-coated copper powder and high-silver silver-coated copper powder; the silver content of the low-silver silver-containing coated copper powder is less than 15%, and the silver content of the high-silver silver-containing coated copper powder is greater than 15%; the low-silver silver-containing coated copper powder accounts for 5-70% of the total mass, and the high-silver silver-containing coated copper powder accounts for 1-50% of the total mass; the curing agent is a combination of thermosetting resin and thermoplastic resin. By selecting the components and the content, the conductivity of common paste with the silver content of 50% or above in the market can be achieved with the silver content of about 35%, the cost is remarkably reduced, the adhesive force is excellent, and the conductive paste is suitable for being popularized in production practice.

The present invention discloses an anti-interference signal control cable and a production process thereof, and relates to the field of cable technology. The production process of the present invention comprises the following steps: S1: after copper wire drawing, surface treatment and twisting, a conductor is obtained; S2: a conductor shielding layer is coated on the outside of the conductor, and an insulating layer is coated on the outside of the conductor shielding layer to obtain an insulating core wire; S3: two insulating core wires are twisted to obtain a twisted pair core; S4: the twisted pair cores are twisted to obtain a cable core; S5: a shielding layer is coated on the outside of the cable core, and a sheath layer is coated on the outside of the shielding layer to obtain an anti-interference signal control cable. The material prepared in the present application still maintains low volume resistivity, excellent electromagnetic interference shielding performance and mechanical properties under a wide temperature change.

The invention discloses a semi-conductive PVC (polyvinyl chloride) cable material and a preparation method thereof. The cable material is prepared from the following raw materials: 66 to 85 parts of PVC resin with the polymerization degree of 1300, 38 to 45 parts of di (2-propylheptyl) phthalate, 3 to 4 parts of dioctyl sebacate, 3 to 4 parts of epoxidized soybean oil, 9.5 to 23.5 parts of conductive agent, 5.4 to 6.2 parts of calcium-zinc heat stabilizer, 0.2 to 0.35 part of antioxidant, 0.35 to 0.5 part of lubricant, 1.4 to 1.7 parts of processing modifier P551J and 3 to 4 parts of chlorinated polyethylene CPE. The cable material disclosed by the invention not only has excellent conductivity and can meet basic requirements of high-voltage cables, but also can keep a stable physical state in a low-temperature environment without embrittlement or performance reduction, shows excellent mechanical strength under the action of external force, and ensures the integrity of a cable structure and the reliability of long-term operation.

The present application provides a primer adhesive for a dry electrode, wherein the primer adhesive comprises the following components in parts by mass: 30-70 parts of a modified polyolefin resin and 10-60 parts of a conductive material, wherein the modified polyolefin resin is a copolymer formed by the polymerization of maleic anhydride, polyolefin and a petroleum resin. The primer adhesive for a dry electrode of the present application can effectively improve the adhesive force between a dry electrode film layer and a current collector and also can reduce the volume resistivity of a battery electrode plate. The present application further provides a method for preparing the primer adhesive for a dry electrode, and a composite current collector comprising the primer adhesive for a dry electrode, a battery electrode plate, a secondary battery, a battery module, a battery pack, and a power consuming device.

The present invention relates to the technical field of rubber tire materials, and discloses a method for preparing an antistatic wear-resistant rubber tire material, wherein carboxyl-terminated nitrile rubber, graphene oxide, epoxidized polyester fiber, and a catalyst are added to an internal mixer, and natural rubber, zinc oxide, accelerator CZ, antioxidant RD, paraffin, stearic acid, and carbon black are added after mixing, sulfur is added after mixing, thin pass, lower sheet, and vulcanization are performed to obtain an antistatic wear-resistant rubber tire material. The carboxyl group on the surface of graphene oxide and the carboxyl-terminated nitrile rubber react with the epoxy group of the epoxidized polyester fiber, so that the graphene oxide, the polyester fiber, and the nitrile rubber undergo chemical bonding to form an organic-inorganic hybrid reinforcement system, which has a good reinforcing effect on natural rubber, and the graphene is evenly dispersed in the rubber tire material matrix to form a continuous conductive network, which reduces the volume resistivity and improves the electrical conductivity and antistatic performance.

The invention relates to a wear-resistant antistatic metal coating and a preparation method thereof, and belongs to the technical field of organic coatings. The metal coating prepared by the invention is mainly prepared from a modified carbon nanotube, an ammonium bromide grafted quaternary phosphonium salt dihydric alcohol compound and polyurethane, wherein after the carbon nano tube is modified by an ammonium bromide grafted quaternary phosphonium salt dihydric alcohol compound, quaternary phosphonium salt and quaternary ammonium salt which are subjected to surface grafting modification can play a role of a dispersing agent, so that the dispersion uniformity of the carbon nano tube in the coating is improved; the uniformly dispersed carbon nanotubes can contact with the ammonium bromide grafted quaternary phosphonium salt dihydric alcohol compound uniformly distributed in the coating through quaternary ammonium salt and quaternary phosphonium salt groups modified on the surfaces of the carbon nanotubes to form a more compact conductive path network with better contact, and the volume resistivity is reduced. And the uniformly dispersed carbon nanotubes and the formed compact conductive path network with good contact are more beneficial to improving the wear resistance and corrosion resistance of the coating.

The invention relates to the technical field of conductive adhesives, in particular to a high-conductivity adhesive film, a preparation method and application of the high-conductivity adhesive film to an antenna module. The preparation method comprises the following steps: modifying flake silver powder with glutaric acid, and mixing with epoxy resin to prepare a component A; the preparation method comprises the following steps: synthesizing epoxy carbazole by taking N-hydroxyethyl carbazole and epoxy chloropropane as raw materials, reacting the epoxy carbazole with 2, 2-bis (hydroxymethyl) propionic acid to obtain bis (hydroxymethyl) grafted carbazole, introducing the bis (hydroxymethyl) grafted carbazole into a polyurethane prepolymer, carrying out end capping by adopting 1, 2, 4-trimesic anhydride, and mixing with a carbon nanotube to obtain a component B; mixing the component A and the component B to obtain a mixed rubber material; and adding a reactive diluent, a triethylene tetramine curing agent, absolute ethyl alcohol, nano silicon dioxide, nickel powder and copper powder into the mixed adhesive material, and drying to form the high-conductivity adhesive film. The high-conductivity adhesive film prepared by the invention is pasted on the surface of an antenna base material, and the antenna module is obtained by curing at 80-100 DEG C after die assembly.

The invention discloses a medium-low temperature aluminum nitride ceramic heater and a preparation method thereof. The medium-low temperature aluminum nitride ceramic heater comprises an aluminum nitride ceramic substrate and a metal water-cooling base or a ceramic connecting support body which are sequentially arranged from top to bottom, wherein the metal water-cooling base or the ceramic connecting support body is used for supporting the aluminum nitride ceramic substrate; the aluminum nitride ceramic matrix is prepared from the following raw materials in percentage by mass: 85-95% of aluminum nitride, 3-5% of yttrium oxide, 0-10% of titanium nitride, 0-10% of titanium diboride, 0-5% of silicon carbide, 0-5% of tungsten carbide and 0-5% of titanium dioxide. According to the aluminum nitride ceramic heater, the formula of the aluminum nitride ceramic matrix of the aluminum nitride ceramic heater is optimized, other materials such as yttrium oxide, titanium nitride, titanium diboride, silicon carbide, tungsten carbide and titanium dioxide are introduced, and the content of each component is changed through formula blending, so that the purpose of performance optimization is achieved; the volume resistivity of the aluminum nitride ceramic heater in the medium and low temperature environment is effectively reduced, the adsorption force in the machining process is guaranteed to meet the requirement, the preparation technology is simple, operation is easy to control, and industrial production is facilitated.

The invention provides a high-performance olefin polymer-based composite material, and belongs to the technical field of high polymer materials. The preparation process comprises the following steps: preparing the antistatic flame-retardant composite filler; preparing a phase change microcapsule; preparation of a PDMA-SH homopolymer; preparing high-temperature-resistant nano powder; preparing a high and low temperature resistant composite coating; and preparing the polypropylene-based battery shell material. By adding the antistatic flame-retardant composite filler into polypropylene, the antistatic performance of the polypropylene material can be remarkably improved, and the antistatic flame-retardant composite filler can form a conductive network in the polypropylene material, so that the surface resistance is effectively reduced, electrostatic accumulation is reduced, and potential safety hazards caused by static electricity are prevented; the antistatic flame-retardant composite filler can improve the flame retardant property of polypropylene, and the nano antimony-doped tin oxide and other components can release flame-retardant gas at high temperature to form a protective layer, prevent flame spread and reduce the combustion rate, thereby improving the safety of the material.

The invention relates to the technical field of ceramic metallization, in particular to a preparation method of metallized ceramic silver paste, which comprises the following steps: preparing nano flake silver powder with the thickness of less than or equal to 1nm and the radius-thickness ratio of more than or equal to 100; preparing glass powder; glass powder, nanometer flake silver powder and an organic carrier with the mass ratio of (1-5): (60-80): (30-40) are mixed, subjected to ball milling and then defoamed, the prepared silver paste has good bonding strength with an Al2O3 ceramic substrate after being sintered, the volume resistivity is low, and the conductivity is good.

The invention relates to the technical field of electrical contact materials, in particular to a SnO2 electrical contact material for a new energy electrical appliance and a preparation method of the SnO2 electrical contact material. The SnO2 electrical contact material comprises 8-15% of tin oxide, 0.5-3% of a composite additive, 0.1-2% of an accelerant and the balance of silver. According to the invention, yttrium ions and chromium ions can be partially dissolved in tin oxide crystal lattices, so that the thermal decomposition reaction of tin oxide at extremely high arc temperature is effectively inhibited, the material loss caused by tin element volatilization is reduced, the second additive generates a high-melting-point composite oxide phase after high-temperature calcination, and the high-melting-point composite oxide phase is uniformly distributed in a silver matrix; as a physical skeleton for resisting arc erosion, the accelerant mainly plays a role in dispersing and interface optimizing, and an interface compound containing zinc, lanthanum, boron and oxygen is formed after the accelerant is calcined, so that the wettability and binding force between tin oxide particles and a silver matrix are improved, uniform distribution of the tin oxide particles is ensured, local overheating and concentrated erosion are avoided, and the service life of the tin oxide particles is prolonged. Therefore, the mass loss of arc ablation is obviously reduced.

The invention relates to the technical field of explosion suppression materials, in particular to an antistatic polyurethane barrier explosion suppression material as well as a preparation method and application thereof. The invention discloses a polyurethane barrier explosion suppression material with antistatic property. The polyurethane barrier explosion suppression material is prepared from the following raw materials in parts by weight: 100-150 parts of polyether triol, 60-80 parts of polyester polyol, 10-15 parts of isocyanate, 3-5 parts of a foaming agent, 1-3 parts of a stabilizer, 1-3 parts of a catalyst, 5-10 parts of a coupling agent and 10-15 parts of an antistatic agent. According to the polyurethane barrier explosion suppression material provided by the invention, the specific antistatic agent is introduced, so that the problem of static accumulation caused by self-insulation characteristics of a traditional polyurethane material is effectively solved, and the problems of material performance reduction, poor durability and the like caused by a traditional method of adding conductive filler or coating a conductive coating on the surface are avoided.

The invention relates to the field of functional ceramics, and provides a low-volume-resistivity silicon carbide ceramic material and a preparation method thereof in order to reduce the volume resistivity of silicon carbide ceramics and enable the silicon carbide ceramics to meet the use requirements of semiconductor etching equipment. The preparation method comprises the following steps: in a CVD (Chemical Vapor Deposition) furnace, firstly placing a graphite base material, then vacuumizing the CVD furnace, and then re-pressing to atmospheric pressure; introducing process gas, preserving heat for 50-60 hours to obtain a CVD-SiC ceramic material, cooling to room temperature, and discharging from the furnace; carrying out annealing treatment on the prepared silicon carbide ring; then processing the inner wall and the outer wall of the obtained silicon carbide annular material; finally, the silicon carbide ring with the graphite exposed on the inner surface and the outer surface is placed in a graphite oxidation furnace, the low-volume-resistivity silicon carbide ceramic material is obtained after treatment, the overall compactness, heat conductivity and bending strength of the material are guaranteed, the volume resistivity of the silicon carbide ceramic is reduced, and the silicon carbide ceramic can be conveniently applied to etching equipment.

This invention relates to the field of tire technology and discloses a tire with low rolling resistance, high handling, and low electrical resistance, comprising a first crown, a second crown fixedly connected to the bottom of the first crown, and a third crown fixedly connected to the bottom of the second crown. This invention, by setting up a first crown, a second crown, a third crown, and vertical grooves, utilizes the vertical grooves on the first crown to pierce the water film during wet driving, thereby improving drainage efficiency and grip. On dry surfaces, the groove edges increase ground contact, enhancing handling response. Simultaneously, the groove distribution disrupts rolling noise frequencies to reduce noise, increases surface area to aid heat dissipation, buffers peak pressure to improve wear uniformity, and works synergistically with the low rolling resistance of the second crown and the electrical conductivity of the third crown. Testing has verified that this structure allows the tire to maintain a higher level of grip performance and achieve a rolling resistance coefficient reaching EU Class A.

The invention provides a method for efficiently preparing micron-sized silver-plated copper powder, the silver-plated copper powder and application of the silver-plated copper powder, and aims at solving the technical problems that an existing technological process is complex, a large amount of waste liquid is generated, and environmental protection is not facilitated. The preparation method comprises the following steps: directly adding the copper powder into a container filled with the solution A, ultrasonically stirring in an ultrasonic constant-temperature water bath at 30-50 DEG C, dropwise adding the solution B into the container, dropwise adding the solution C when the solution B is dropwise added to 20-30% of the rest of the solution B, continuously dropwise adding the solution B until the dropwise adding is finished, continuously stirring for at least 0.5 h after the solution C is completely dropwise added, and cooling to room temperature to obtain the copper powder. And taking out, repeatedly cleaning with deionized water and absolute ethyl alcohol for multiple times, and drying under nitrogen protection or vacuum conditions to obtain the silver-plated copper powder. The silver-plated copper powder is used for preparing a conductive adhesive, a conductive coating or a shielding film material. The preparation method is simple, no waste liquid is generated in the preparation process, the green and environment-friendly requirements are met, silver particles generated on the copper surface through replacement are more compact, and the volume resistivity is smaller.

The invention relates to leather glass as well as a preparation method and application thereof, and the leather glass comprises the following components in terms of oxide: SiO2, PbO, Bi2O3, Cs2O, Rb2O, BaO, MgO, Al2O3, ZrO2, Nb2O5 and SrO. Wherein the content of the SiO2 is 20 to 40 weight percent; the total content of the PbO and the Bi2O3 is 35 to 45 weight percent; the total content of the Cs2O and the Rb2O is 5 to 12 weight percent; the total content of the BaO and the MgO is 10 to 16 weight percent; the content of the Al2O3 is 1 to 4 weight percent; the total content of the ZrO2 and the Nb2O5 is 3 to 7 weight percent; the content of the SrO is 5 to 10 weight percent. The glass phase transition temperature Tg of the leather glass is larger than or equal to 620 DEG C, the softening temperature Tf of the leather glass is larger than or equal to 680 DEG C, the thermal expansion coefficient of the leather glass at the temperature of 20-300 DEG C is (67-72) * 10 <-7 > / DEG C, the leather glass has good devitrification resistance and acid-resistant stability, and further, the baking-resistant temperature of the microchannel plate prepared from the leather glass is larger than or equal to 580 DEG C, and the bulk resistance of the microchannel plate is smaller than or equal to 172 megohms.

The invention relates to the technical field of ceramic metallization, in particular to a method for preparing a metallized ceramic silver paste, comprising the steps of preparing a nano-flaky silver powder with a thickness of ≤1nm and a diameter-to-thickness ratio of ≥100; preparing a glass powder; and mixing the glass powder, the nano-flaky silver powder and an organic carrier in a mass ratio of 1-5:60-80:30-40, ball-milling and degassing. The silver paste prepared by the invention has good bonding strength with an Al2O3 ceramic substrate after sintering, and has low volume resistivity and good conductive performance.

In the present invention, a low-resistance conductive film is formed on a paper substrate. The copper ink according to the present invention includes fine copper particles, a liquid dispersion medium, and a dispersant that disperses the fine copper particles in the dispersion medium. The fine copper particles are copper particles having a median diameter of 60-110 nm. The concentration of the fine copper particles is 60 wt% or more with respect to the entire copper ink. The dispersion medium contains an alcohol having a plurality of hydroxyl groups. The dispersant is a polymer compound having a phosphate group or a salt thereof. The concentration of the dispersant is 3-6 wt% relative to the weight of copper. The copper ink is optically fired to form a conductive film of the paper substrate.

The invention discloses an ethylene and alpha-olefin multipolymer, relates to the technical field of olefin polymerization, and in particular relates to an ethylene and alpha-olefin multipolymer as well as a preparation method and application thereof, the haze of the ethylene and alpha-olefin multipolymer is 1-7%, and the light transmittance is gt; the volume resistivity is gt; the molecular weight is 5.0 * 10 < 17 > omega.cm, the weight-average molecular weight is 70000-130000, and the crystallinity is 15%-35%; the method comprises the following steps: controlling the ratio of the mass flow rate of a liquid phase material A entering a fluidized bed reactor to the mass flow rate of circulating gas, and controlling the molar ratio of 1-butene / ethylene, the molar ratio of 1-hexene / ethylene, the molar ratio of 1-octene / ethylene, the molar ratio of a molecular weight regulator / ethylene, the molar content of an inert condensing agent and the injection position of the liquid phase material A in the circulating gas; the ethylene and alpha-olefin multipolymer with low haze, high light transmittance and high volume resistivity is obtained.

A method for producing an electrode includes: forming a mixture including an electrode active material and a carbon additive; wherein the electrode active material is in a powder form; forming a mixture including electrode active material particles and a carbon additive; dry coating the active material with a carbon additive to produce a circumferential uniform or surrounding conductive layer on the surface of the particles of the active material; adding 10 a binder to the coated active material particles to bind the coated active material particles and produce a separate film of the mixture or applying the film on a substrate to form an electrode; wherein the mixture is formed using a dry mixing process comprising suspending the active material particles by mechanical agitation and / or flowing of air through the mixture such that they are in direct contact with the active material particles via shear forces, compression forces 15 and impact forces induced by the mixing; wherein the dry coating comprises a carbon additive surrounding particles of the active material to create an electrically conductive layer on the surfaces of the particles of the active material.

The invention relates to an antistatic TPU particle and a preparation method thereof, and belongs to the technical field of TPU, the TPU particle comprises the following raw materials: polyester type thermoplastic polyurethane elastomer, carbon nanotube, reduced graphene oxide, modified silicon dioxide, modified wood fiber, didodecane dimethyl ammonium bromide, octyl tributyl phosphonium bis (trifluoromethanesulfonyl) imine salt, melamine and N, N-dimethylformamide. And N, N-dimethylformamide is used as a solvent. According to the invention, carbon nanotubes and reduced graphene oxide are selected as antistatic fillers, didodecane dimethyl ammonium bromide is added to modify the antistatic fillers, and octyl tributyl phosphonium bis (trifluoromethanesulfonyl) imine salt is used to make up a part of conductive network defects of the antistatic fillers, so that TPU particles with an antistatic effect are prepared; besides, modified silicon dioxide and modified wood fibers are compounded on the basis of the carbon nanotubes, and melamine is added at the same time, so that the prepared TPU particles have excellent tensile property.

The application provides an anti-static knitted fabric based on charge accumulation and directional guidance, a preparation method thereof and a knitted fabric, and belongs to the technical field of knitted clothes. The first spinning component and the second spinning component are co-extruded through melt spinning to prepare a composite fiber with a parallel composite structure, and a composite yarn is obtained through thermal mechanical treatment; the composite yarn is introduced into a specific area of the fabric in a tuck-welt organization through an inlaying process, and latent crimping is activated through after-finishing. The application utilizes the hygroexpansion of the second spinning component to drive macroscopic self-crimping of the composite yarn, and constructs an efficient conductive framework by physical extrusion of the internal conductive filler, so that humidity response adjustment of the anti-static performance and directional dissipation of the charge are realized, the problems of fixed conductive state, local static accumulation and poor comfort of the existing fabric are effectively solved, and the safety and wearing experience of the clothes are improved.

The invention discloses a greenhouse film which comprises an outer layer, an inner layer and a core layer located between the outer layer and the inner layer. The outer layer is prepared from the following components in parts by mass: 40 to 60 parts of polyethylene I, 10 to 20 parts of polar resin I, 10 to 20 parts of polar resin II, 5 to 15 parts of dust-proof agent, 5 to 20 parts of anti-aging master batch and 1 to 7 parts of ultraviolet absorption master batch, wherein the mass part of the polyethylene I is (100): 40 to 60 parts of polyethylene I, 10 to 20 parts of polar resin I, 10 to 20 parts of polar resin II, 5 to 15 parts of dust-proof agent, 5 to 20 parts of anti-aging master batch and 1 to 7 parts of ultraviolet absorption master batch. In addition, the core layer comprises polyethylene I, polar resin II, heat preservation master batch and anti-aging master batch. And the inner layer comprises the following components: polyethylene I, polar resin I, polar resin II and an anti-aging master batch. The polar resin I comprises an ethylene-methacrylic acid copolymer; the polar resin II comprises an ethylene-vinyl acetate copolymer; the dustproof agent comprises a high-molecular permanent antistatic agent. According to the greenhouse film provided by the invention, the conditions are met by optimizing the raw material components and the dosage of each layer, so that the long-acting dustproof function is favorably realized.