295results about How to "Lower surface resistivity" patented technology

An electronic device on a plastic substrate, at least one side of the device being protected from reaction with or incorporation of moisture by a composite barrier. The composite barrier may contain, for example, multiple layers of transparent conductive oxide separated by one or more vacuum-evaporated in-situ polymerized organic layers, or may contain multiple barrier layers of transparent conductive oxide, transparent metal, or transparent conductive metal nitride, separated by at least one layer of organic dielectric polymer.

The invention discloses a polymer/graphene anti-static coating, a preparation method and application thereof. The coating comprises the following constituents by weight percent: 0.01 portions to 0.5 portions of graphene; 0 portion to 10 portions of conductive additive; 90 portions to 100 portions of polymer; and solvent; the preparation method thereof comprises the following steps: completely and uniformly mixing graphene and conductive additive in advance by various manners; preparing a graphene-conductive additive compound system; using the compound system as a base, adding in conductive additive and polymer along with the solvent, completely and uniformly mixing to obtain the coating. Additionally, an anti-static film can be prepared by using different film forming technologies. The polymer/graphene anti-static coating, the preparation method and application thereof effectively solve the problems that graphene in polymer is easy to agglomerate and difficult to be uniformly dispersed in the preparation process of anti-static coating and film; the anti-static performance and mechanical performance of the coating and the film are greatly increased; meanwhile, the preparation technology is easy to be operated; the production is continuous, and the coating and film are suitable for industrial production.

An object is to eliminate electric discharge due to static electricity generated by peeling when an element formation layer including a semiconductor element is peeled from a substrate used for manufacturing the semiconductor element. A substrate over which an element formation layer and a peeling layer are formed and a film are made to go through a gap between pressurization rollers. The film is attached to the element formation layer between the pressurization rollers. The film is bent along a curved surface of the pressurization roller on a side of the pressurization rollers, where the film is collected, and accordingly, peeling is generated between the element formation layer and the peeling layer and the element formation layer is transferred to the film. Liquid such as pure water is sequentially supplied by a nozzle to a gap between the element formation layer and the peeling layer, which is generated by peeling, so that electric charge generated on surfaces of the element formation layer and the peeling layer is diffused by the liquid.

Provided is a particulate magnetic recording medium having good processing properties and being inexpensive to produce, similar to prior recording media, wherein by controlling the magnetic clusters that appear due to recording at short wavelengths and thinning of the magnetic layer, good high-density characteristics are achieved in combination with MR heads. The magnetic recording medium comprising an essentially nonmagnetic lower layer and a magnetic layer comprising a ferromagnetic powder and a binder in this order, wherein the magnetic layer has a thickness ranging from 0.01 to 0.15 mum and a coercivity equal to or higher than 159 kA/m, ferromagnetic particles contained in the ferromagnetic powder have a size less than ½ of the minimum recording wavelength, and an average size of magnetic cluster at DC erase is equal to or higher than 0.5x104 nm2 and less than 5.5x104 nm2.

A spontaneous emission display includes a support, a first electrode section provided on the support and having a fine wire structure portion made of a conductive metal and a translucent conductive film, and a display section formed on the first electrode section and having a light-emitting layer. The volume resistance of the fine wire structure portion of the first electrode is 10⁻⁴ Ω·cm or less and/or the surface resistance thereof is 100 Ω/sq or less. The volume resistance of the conductive film is 0.05 Ω·cm or more and/or the surface resistance thereof is 100 Ω/sq or more. When the surface resistance of the first electrode section before a bending test is denoted by R1 and that after the bending test is denoted by R2, R2/R1<18 is satisfied.

A cleaner head for a surface treating appliance includes a housing and a rotatable brush bar located within the housing. The brush bar includes a first plurality of bristles and a second plurality of bristles which protrude radially outwardly beyond the first plurality of bristles. The second plurality of bristles has a surface resistivity in the range from 1×10⁻⁵ to 1×10¹² Ω/sq so that static electricity residing on a floor surface to be cleaned is discharged upon contact with the conductive bristles.

The invention discloses an antistatic nylon material and a preparation method thereof. The antistatic nylon material comprises the following components in percentage by weight: 72-94 percent of polyamide, 5-26 percent of antistatic agent, 0.2-0.6 percent of antioxidant, 0.2-0.8 percent of lubricant and 0.3-0.6 percent of nucleating agent. The surface resistivity of a polyamide material is greatly reduced, and the volume resistivity of the antistatic nylon material is controlled to be 107-1010ohm and maintains in the stable state for a long time. The invention provides an economic, applicable and permanent antistatic nylon material with obvious and stable antistatic effect.

The present invention relates to a method of preparing silver nanowires having a diameter of less than 100 nm and a length of 10 μm or more, and, more particularly, to a method of uniformly preparing silver nanowires having a high aspect ratio using an ionic liquid as an additive in addition to a silver salt precursor, a reducing solvent and a capping agent in a polyol process. When the technology of the present invention is used, silver nanowires having a diameter of less than 100 nm and a length of 10 μm or more can be uniformly prepared. Further, when a transparent conductive film is formed by applying a silver nanowire-dispersed solution onto a base film, the transparent conductive film has a surface resistivity of 10¹˜10³Ω/□ and a light transmittance of 90% or more to the base film.

A cleaner head for a cleaning appliance includes a rotatable agitator assembly, an agitator chamber housing the agitator assembly, and a sole plate defining a downwardly-directed opening through which debris energized by the agitator assembly enters the agitator chamber. A set of support members is located on a leading and trailing section of the sole plate, the support members extending downwardly beyond the sole plate to support the sole plate above a relatively hard floor surface. The lowermost extremities of the sets of support members are located in a first plane, and the edges of the opening are located in a second plane which is inclined upwardly relative to the first plane. The agitator assembly includes agitating members which extend outwardly from the opening beyond the second plane but within the first plane.

The invention discloses a transparent flame-retardant antistatic ABS material, and a preparation method and an application thereof. The transparent flame-retardant antistatic ABS material comprises 39-80 parts by weight of a transparent ABS resin, 10-25 parts by weight of an environmentally-friendly brominated flame retardant, 0-1 part by weight of an antimony flame retardation synergist, 1-5 parts by weight of a phosphorus flame retardation synergist and 5-25 parts by weight of a flexibilizer, wherein the environmentally-friendly brominated flame retardant is tri(tri-bromophenyl)cyanurate. The invention also provides the preparation method of the transparent flame-retardant antistatic ABS material, and the application of the ABS material. The ABS material still has a high transparency, a light transmittance reaching above 40%, good mechanical properties, a good weather ability, and a surface resistivity of 10<10>omega or less after the flame retardation modification.

The invention discloses a novel anti-flaming anti-static electricity polypropylene dedicated material and a preparation method thereof; the dedicated material is prepared by the following raw materials by mass percentage: 40-70 percent of polypropylene resin or polypropylene/ nylon alloy or polypropylene/nylon/PP-g-MAH, 20-40 percent of formulated fire retardant, 4-10 percent of electric-conduction fillers, and 6-15 percent of inorganic fillers; the formulated fire retardant is formulated by several kinds of compound A, compound B, ammonium polyphosphate, tetramethylolmethane, magnesium hydroxide, aluminium hydroxide and tripolycyanamide, the compound A is bromocyclohexane or hexabromocyclododecane, the compound B is antimony trioxide or antimony pentoxide; the inorganic filler adopts montmorillonoid, hydrotalcite, talcum powder or attapulgite clay. The novel anti-flaming anti-static electricity polypropylene dedicated material prepared by the invention has good flame retardant property and good anti-static electricity performance, the mechanical intensity of the material is further improved after the alloy is prepared by adding the nylon, the used raw material has low cost and is environment-protection, and no melt body drops in the anti-flaming process.

The invention the invention discloses a halogen-free flame-retardant antistatic TPU (thermoplastic polyurethane) material which is composed of 60-90 parts of thermoplastic polyurethane elastomer, 5-40 parts of flame retardant, 1-5 parts of antistatic agent, 0.1-0.5 part of antioxidant and 0.2-1 part of lubricant. The Shore hardness A of the TPU elastomer is 70-95HA, and the flame retardant is composed of one or more of alkyl hypophosphorous acid metal salts or hypophosphorous acid metal salts. The method comprises the following steps: proportionally selecting raw materials, uniformly mixing the selected raw materials, melting, compounding, and granulating by extrusion. The halogen-free flame-retardant antistatic TPU material has obviously lower surface resistivity and obviously higher flame-retardant grade under the condition of not influencing the tensile strength, fracture strength and Shore hardness A of the TPU substrate, is free of halogens, and has excellent flame-retardant and antistatic functions.

The invention discloses a novel antistatic bending-resisting polypropylene dustproof fan blade, which is prepared from the following components in percentage by weight through reaction: 56.5 to 60.5 percent of polypropylene resin, 0.5 to 4 percent of antistatic agent, 28 to 32 percent of glass fiber, 8 to 10 percent of gypsum powder and 0 to 1 percent of additive. A preparation method for the dustproof fan blade of the invention comprises the following steps: putting a certain proportion of the polypropylene resin, the antistatic agent, the glass fiber, the gypsum powder and the additive into a high mixing device, uniformly mixing the raw materials and stirring the mixture; putting the mixed raw materials into a charging barrel of a double-screw extruder to carry out extrusion and traction at a temperature of between 160 and 220 DEG C, carrying out standing-wave cooling on the obtained product and carrying out granulating; and utilizing the granules to prepare the dustproof fan blade by a common process. The novel antistatic bending-resisting polypropylene dustproof fan blade mixes small added quantity of the antistatic agent with the glass fiber and the gypsum powder into the polypropylene, has more excellent antistatic property and more excellent impact resistance and bending resistance and can provide decrease of the surface resistivity 10 to 100 times on average.

The invention relates to a preparation method of a mineral graphene reinforced ultra-high molecular weight polyethylene double-resistant pipe. The pipe is prepared from the following raw materials: 100 parts of ultra-high molecular weight polyethylene, 2-5 parts of nano-graphene sheets, 5-10 parts of a coupling agent, 0.1-1 part of a foaming agent, 0.1-1 part of a compatibilizer, 1-2 parts of a lubricating agent, 6-10 parts of a halogen-free flame retardant, 3-6 parts of an antistatic agent, 2-4 parts of a flow modifier, 1-3 parts of a nucleating agent, and the like; the graphene reinforced ultra-high molecular weight polyethylene double-resistant pipe is prepared by the processes of extruding, sizing, and the like. According to the preparation method, nano-graphene, the antistatic agent and the flame retardant are dispersed into ultra-high molecular weight polyethylene resin medium gaps by means of the coupling agent, the compatibilizer, the flow modifier, the lubricating agent, the nucleating agent, and the like; the nano-graphene sheets have significant synergistic flame retardation after being compounded with the flame retardant, and can reduce the resistivity of the pipe after being compounded with the antistatic agent. The prepared pipe has the characteristics of being light in weight, high in strength, flame-retardant, antistatic, and the like, thus being used in the operating environments such as coal mines, downhole and mines in which a great deal of gas exists.

The invention belongs to the field of the synthesis of polymer materials, and particularly relates to an antistatic polyurethane elastomer and a preparation method thereof. The antistatic polyurethaneelastomer is prepared from the following raw materials: polymer polyol, isocyanate, a chain extender, an antioxidant, modified graphene and a catalyst. The modified graphene is added in the followingway: the modified graphene is added into the chain extender to form modified graphene-chain extender dispersion liquid under an ultrasonic condition. Groups contained in the surface of the modified graphene such as hydroxyl, carboxyl, and amino react with-NCO, the antistatic polyurethane elastomer obtained by virtue of an in-situ polymerization way has lower surface resistivity and volume resistivity, higher mechanical performance and good wear resistance and heat stability, and can be applied to the fields such as polyurethane textiles.

The invention relates to a polymer composition, and particularly relates to a modified polyformaldehyde composition. The modified polyformaldehyde composition comprises, by weight, 80-100 parts of polyoxymethylene, 10-15 parts of a conductive additive, 4-8 parts of a dispersing agent, 1-5 parts of a light-shielding agent and 0.2-0.5 part of an antioxidant, wherein the conductive additive is graphene. In the modified polyformaldehyde composition, the graphene is used as the conductive additive, so that the modified polyformaldehyde composition has good conductive performance; surface resistivity of polyformaldehyde is effectively reduced; and by adding other series of auxiliary agents, the obtained polyformaldehyde has strong anti-static capacity, good mechanical performance, ultraviolet resistance and strong thermal oxidation resistance.

The invention discloses far-infrared polyester fiber. The far-infrared polyester fiber is prepared by blending PET (polyethylene terephthalate) fiber, PTT (polytrimethylene terephthalate) fiber, far-infrared property master batch and copper-loaded graphene powder, wherein the PET fiber is prepared from dimethyl terephthalic acid and ethylene glycol polyester according to a molar ratio of 1.2:2.3; the PTT fiber is prepared from dimethyl terephthalic acid and propylene glycol polyester according to a molar ratio of 1.5:2.5; the far-infrared polyester fiber is prepared from the following raw materials in percentage by weight: 0.05% to 0.1% of far-infrared property master batch, 0.05 to 25% of copper-loaded graphene powder, and the balance of PET fiber slice and PTT fiber slice, and the raw materials of the far-infrared property master batch are mainly vermiculite and medical stone microparticles. The invention also discloses a preparation method of the polyester fiber. The polyester fiber prepared by the preparation method has excellent far-infrared property, bacteria-resisting and inhibiting properties, and skin-friendly and skid-care properties.

The invention discloses a liquid crystal polyester resin compound and a preparation method and application thereof. The liquid crystal polyester resin compound comprises components of the following components by weight: 60-80 parts of liquid crystal polyester resin, 15-35 parts of a filler, 0-20 parts of carbon fiber and 0-5 parts of carbon nanotubes. The liquid crystal polyester resin compound uses the liquid crystal polyester resin as a base resin component, the carbon fiber and the carbon nanotubes and the like are used for modifying the liquid crystal polyester resin, so that the surface resistivity of the liquid crystal polyester resin compound is low, the liquid crystal polyester resin compound has excellent mechanical strength and excellent processability, the preparation process is easy to control, a prepared material has stable properties, and the production cost can be effectively reduced.