1085 results about "Surface resistivity" patented technology

The disclosed is a transparent conductive film that includes a matrix and carbon fibrous structures added to the matrix, wherein the carbon fibrous structures comprise carbon fibers, each having an outside diameter of 15-100 nm, and wherein the carbon fibrous structures each comprise a granular part at which two or more carbon fibers are bound to each other, and wherein the granular part is concurrently produced in a growth process for the carbon fibers. When the transparent conductive film is formed at a thickness of 0.1-5 μm on a glass substrate, it shows a surface resistivity of not more than 1.0×10¹²Ω/□, and a total light transmittance of not less than 30%. A coating composition for the conductive transparent film is prepared by using a media mill equipped with beads having an average diameter of 0.05-1.5 mm to disperse the carbon fibrous structures into the liquid resinous composition.

A solution for forming a film having a high transmittance and a low reflectivity for visible light, a low transmittance for near infrared radiation, and a surface resistivity of at least 106 ohms/square. It contains fine particles of a hexaboride of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Th, Dy, Ho, Er, Tm, Yb, Lu, Sr or Ca, and fine particles of ITO or ATO in a weight ratio of from 0.1:99.9 to 90:10. Also disclosed is a film formed on at least one side of a resin film as a base, for cutting off solar heat radiation.

A resin composition exhibiting excellent antistaticity and static charge dissipating performance and having extremely small variations of antistatic properties (saturated static voltage and half-life period of static voltage) on the surface of a molded article and a transportation jig for electronic field made of the above resin composition are provided by using a resin composition produced by compounding (A) 100 parts by weight of a thermoplastic resin with (B) 1 to 30 parts by weight of a carbon fiber having a diameter of 1 nm to 1 mum, a length of 1 mum to 3 mm and a volume resistivity of smaller than 1 OMEGAcm and (C) 5 to 200 parts by weight of an antistatic polymer having a surface resistivity of 108 to 1011OMEGA (measured under impressed voltage of 500V), a melting point of 100° C. or above, an apparent melt viscosity of 10 to 1,000 Pa.s at apparent shear rate of 1,000 sec-1 at 260° C. and an apparent melt viscosity ratio of the antistatic polymer to the thermoplastic resin of 0.01 to 1.3 under the above condition.

An intermediate image transfer type of image forming apparatus of the present invention includes an image carrier, an intermediate image transfer body, primary image transferring means for transferring a toner image from the image carrier to the intermediate image transfer body, and secondary image transferring means for transferring the toner image from the intermediate image transfer body to a sheet. When the surface resistivity of the intermediate image transfer body is measured by a method that repeatedly applies a voltage of 200 V for 60 seconds to the intermediate image transfer body and grounds the intermediate image transfer body for 10 seconds 1,000 consecutive times, a difference in absolute value between the logarithm of the first time of measurement and that of the thousandth time of measurement is 0.5 log Ω/□ or below.

A panel-type input device including a pair of electrode plates, each electrode plate having a substrate and a conductive coat provided on a surface of the substrate, the conductive coat of each electrode plate being formed from a conducting polymer. The conductive coat of each electrode plate includes a detecting area adapted to detect a touch input and an inoperative area disposed adjacent to the detecting area, the inoperative area having a surface resistivity higher than a surface resistivity of the detecting area. A parallel electrode pair adapted to apply a voltage to the conductive coat is formed in the detecting area, and conductors connected to the parallel electrode pair are formed in the inoperative area. The inoperative area insulates the conductors from the detecting area.

The present invention belongs to the field of chemical technology, and is especially one kind of conducting water soluble polyurethane paint containing carbon nanotube and its preparation process. The conducting paint is prepared through the first modifying carbon nanotube chemically for the surface to carry hydroxyl group, carboxyl group or amino group; the subsequent introducing to polyester polyol or isocyanate terminated polyurethane pre-polymer through chemical bonding and self-emulsifying to prepare water soluble polyurethane dispersoid containing carbon nanotube; and final adding deionized water and assistants through high speed stirring to obtain the conducting paint. The conducting paint can form coating with volume resistivity of 1x10<-5>-4x10<-4. ohm.cm, surface resistivity of 1x10<-1>-2x10<2> ohm, adhesion of 0 grade, shielding effectiveness of 70-85 dB, and long term stability, and has wide application.

A disk drive includes an opaque cover secured to a base, where the opaque cover has an opening. A see-through insert, which includes an electrically conductive material, is affixed to the opaque cover over the opening. The electrically conductive material may be a coating applied to the see-through insert which, in one embodiment is a polymer coating having a certain surface resistivity. Alternatively, the coating's ESD-dissipative properties may be due to the presence of sputtered gold, sputtered indium tin oxide or a metal film. The electrically conductive material may alternatively be embedded in the see-through insert.

There is provided a non-contact type IC card that prevents electrostatic discharge failure of an IC chip embedded in an IC card.

A non-contact type IC card includes at least a magnetic recording layer, a metal reflective layer, and a hologram layer, which are sequentially laminated on a card base member, and an antenna and an IC chip connected to the antenna that are embedded in the card base member. The metal reflective layer is made of a material of which electric conductivity is smaller than 28.9×10⁶/Ωm, or is composed of a thin film of which surface resistivity is 7.02 (Ω/□) or more.

The invention provides a production method of a silver nanowire transparent conductive film. The production method comprises the steps of: preparing a silver nanowire coating liquid, and coating the silver nanowire coating liquid on a base material sheet to obtain a silver nanowire conductive coating; coating an oxide sol on the upper surface of the silver nanowire conductive coating to obtain an oxide protective layer; and forming the silver nanowire transparent conductive film on the base material sheet after baking and curing. The transmittance of the silver nanowire transparent conductive film prepared by adopting the method can reach 85 to 91%, the haze of the same is less than or equal to 2%, the surface resistivity of the same ranges from 10 to 200ohm/sq, and the surface hardness of the same ranges from 6 to 8H.

An image forming apparatus includes an image forming mechanism configured to form a visible image using toner on a recording sheet according to input image data and a fixing mechanism configured to fix the visible image onto the recording sheet. The fixing mechanism includes a first roller, a second roller, a belt, and a third roller. The first roller is configured to rotate. The second roller includes inside a first heater and is configured to rotate. The belt is looped over the first and second rollers. The third roller is arranged opposite to the first roller via the belt, includes inside a second heater, and has a surface resistivity not higher than 1.0×10⁶ Ω-cm under a voltage of 10 V. The third roller applies a pressure to the belt and the first roller and rotates in conjunction with a movement of the first roller via the belt.

A heat-peelable pressure-sensitive adhesive sheet which, even when used for temporarily fixing electronic parts having poor resistance to static electricity, such as magnetic heads, is effective in preventing the yield of such electronic parts from being reduced by electrostatic breakage, while ensuring its functions of adhesiveness before heating and peelability after heating. The heat-peelable pressure-sensitive adhesive sheet comprises a substrate and formed on at least one side thereof a heat-expandable pressure-sensitive adhesive layer containing heat-expandable microspheres, wherein the heat-expandable pressure-sensitive adhesive layer has a surface resistivity of 10¹² Ω/□ or lower. In this heat-peelable pressure-sensitive adhesive sheet, the heat-expandable pressure-sensitive adhesive layer before heating may have a center line average surface roughness of 2 μm or less and a maximum surface roughness of 5 μm or less. The adhesive sheet may have a rubber-like organic elastic layer interposed between the substrate and the heat-expandable pressure-sensitive adhesive layer.

This invention relates to a dense ceramics having ESD dissipative characteristics, tunable volume and surface resistivities in semi-insulative range (10.sup.3 -10.sup.11 Ohm-cm), substantially pore free, high flexural strength, light colors, for desired ESD dissipation characteristics, structural reliability, high vision recognition, low wear and particulate contamination to be used as ESD dissipating tools, fixtures, load bearing elements, work surfaces, containers in manufacturing and assembling electrostatically sensitive microelectronic, electromagnetic, electro-optic components, devices and systems.

The present invention is directed to electrically conductive coatings of carbon that have high thermal oxidative stability and low thermal conduction. Coatings of the invention provide a surface resistivity to the coated substrate of 10² ohms/square, and preferably 10⁻² ohms/square. Coatings also provide the coated article increased thermal oxidative stability as compared to the uncoated article and articles coated with convention materials like carbon black and metals, as well as low thermal conduction. The invention is also directed to substrates possessing conductive coatings, methods of utilizing the coated substrates, and to methods of forming the coatings of the invention.

The invention provides a tunable microwave-absorbing artificial electromagnetic metamaterial based on a topology/graphene material. Through the introduction of the topology material or the graphene material into the microwave-absorbing artificial electromagnetic metamaterial, the resonant frequency corresponding to an absorption peak is changed, so that the frequency band of an absorption spectrum is tunable; and therefore, the problem that the frequency band of the microwave-absorbing artificial electromagnetic metamaterial is too narrow and untunable is solved. With the adoption of the tunable microwave-absorbing artificial electromagnetic metamaterial based on the topology/graphene material, the dielectric coefficient and the surface resistivity of the topology material or the graphene material can be changed through control on an external electric field, temperature or thickness of the topology material or the graphene material; and in such a way, the microwave-absorbing artificial electromagnetic metamaterial with the tunable working frequency band is further realized.

The invention discloses an antistatic blocking resistant smooth linear low-density polyethylene composition based on LLDPE as base, which comprises the following parts: 0.05-0.2% opening agent, 0.05-0.3% smooth agent, 0.05-0.3% antistatic agent, 0.05-0.2% anti-oxidant and 0.05-0.2% manufacturing and heat stabilizer, wherein the opening agent contains inorganic blocking resistant agent or organic opening agent; the smooth agent is amide, soap or organic silicane; the main auxiliary anti-oxidant is hindered phenol and phosphorus anti-oxidant; the antistatic agent adopts composite pattern of non-ionic typed antistatic agent and ion-typed antistatic agent. The making method compress the following steps: adopting LLDPE as base; adding blended auxiliary material into graining stage; or graining auxiliary agent into mother grain; adding mother grain; manufacturing specific material.

The present invention relates to a flexible sensing material made from (a) at least one flexible polymeric layer and (b) at least one conductive, curable coating layer containing about 0.01 wt. % to about 5 wt. % of multi-walled carbon nanotubes having a diameter of greater than about 4 nm, about 10 wt. % to about 99 wt. % of an aliphatic urethane acrylate and about 0.1 wt. % to about 15 wt. % of a photoinitiator, wherein the weight percentages are based on the weight of the formulation, wherein the coating layer is curable by exposure to radiation and wherein the cured coating layer has a surface resistivity of about 10²Ω/□ to about 10¹⁰Ω/□. The inventive sensing material may prove useful for sensing one or more of pressure, temperature and moisture and find use in a wide variety of applications.

The present invention is directed to antistatic elastomeric articles and methods of making the same. The articles can be single layered or multilayered. The single layered articles possess desirable antistatic properties and desirable properties of comfort and feel. The multilayered articles have an outermost layer/surface that possesses desirable antistatic properties and an innermost layer/surface that exhibits desirable properties of comfort and feel. In preferred embodiments, the elastomeric articles are made form a nitrile/natural rubber blend. Articles of the present invention have antistatic properties measured as having a surface resistivity below about 10¹⁴ Ω/sq and a static decay time of less than about 60 seconds.

The present invention is to provide an electromagnetic wave shielding material including a transparent substrate and a convex pattern layer composed of a conductive composition formed in a prescribed pattern on the transparent substrate, wherein the conductive composition contains conductive particles and a binder resin; and in observation of a transverse cross section of the convex pattern layer by electron microscopic photography, at least a part of the conductive particles has a fused continuation and a method for manufacturing the same. The electromagnetic wave shielding material and the method for manufacturing the same include a configuration capable of achieving a lower surface resistivity in an electromagnetic wave shielding material which is required to achieve a much more reduction in a line width of the pattern, specifically, a reduction to a line width of not more than 30 μm, and more preferably not more than 15 to 20 μm and a treatment method capable of reducing the surface resistivity by an easy and short-time treatment.

A closed-cell foam comprises at least about 50 weight percent thermoplastic polymer and from about 5 to about 50 weight parts of particles dispersed in the thermoplastic polymer per 100 weight parts of the thermoplastic polymer. The particles have an average size in the longest dimension of from about 5 to about 300 microns. If the particles are electrically conductive, then the foam has a surface resistivity of at least about 1×10⁶ ohms. The foam is useful in sound dampening applications.

The present invention relates to the development of electrostatic dissipative (ESD) electronic packaging materials based on the electrically conducting nanofiller decorated polyurethane foams and also describes a process for the preparation of the same. More specifically it relates to the development of electrically conducting foams by providing a coating of 0.003 to 2.97 vol % loading of electrically conducting materials (like conducting polymers, functionalized carbon nanotubes, graphene analogues etc) over/onto otherwise electrically insulating surface of foams. The combination of low density, mechanical flexibility, resilience and surface conductivity collectively contribute towards their excellent shock absorption and static charge dissipation capabilities. In particular, these foams display surface resistivity value <10⁹ ohm/sq and static charge dissipation time <0.5 sec, which clearly demonstrate their potential for electronic packaging applications. Besides, these foams could also be useful for antistatic dust filters, clean-room/medical apparels, static-free footwear, static dissipative upholstery items, antistatic/dissipative floorings/tiles etc.

A tray for handling and retaining a plurality of small components comprising a rigid body portion with a plurality of pockets formed therein. Each of the pockets has an elastomeric contact surface for contacting and retaining a component. The contact surface may be formed from a thermoplastic material having a surface energy between 20 dyne/cm and 100 dyne/cm, and a surface electrical resistivity of between about 1×10⁴ ohms/square and 1×10¹² ohms/square. The material for the contact portion may be urethane, polybutylene terephthalate, polyolefin, polyethylene terephthalate, styrenic block co-polymer, styrene-butadiene rubber, polyether block polyamide, or polypropylene/crosslinked EDPM rubber. The body portion may be formed from acrylonitrile-butadiene-styrene, polycarbonate, urethane, polyphenylene sulfide, polystyrene, polymethyl methacrylate, polyetherketone, polyetheretherketone, polyetherketoneketone, polyether imide, polysulfone, styrene acrylonitrile, polyethylene, polypropylene, fluoropolymer, polyolefin, or nylon. The body portion may have a peripheral border region and a downwardly projecting skirt portion to facilitate stacking of multiple trays.

The invention discloses a preparation method for antistatic super hydrophobic composite coating, comprising the following steps: dissolving 0.2-2 parts of styrene-maleic anhydride alternate copolymer by weight into 20-1000 parts of solvent by weight, adding 1 part of carbon nanotube by weight and then evenly mixing, adding 0-26 parts of ammonia water and 0.2-2 parts of silicate ester or titanate compound by weight, stirring and mixing to enable silicate ester or titanate compound to perform hydrolysis reaction, adding 0.1-2 parts of silicate ester or titanate compound and 0.02-0.5 part of fluorine containing silane coupling agent by weight, evenly mixing and spraying on base materials, carrying out aging and thermal treatment to obtain stable antistatic super hydrophobic composite coating. The invention has simple operation and mild condition, the carbon nanotube can be directly used without the need of any chemical modification, the obtained composite coating has good hydrophobicity,the static contact angle and rolling angle between the composite coating and water are respectively larger than 150 degrees and less than 3 degrees, and the surface resistivity is 106-1011 omega, thus meeting the requirement of antistatic transparent coating and having wide application prospect.