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50results about How to "Excellent resistance" patented technology

Process for producing laminated exfoliated graphite composite-metal compositions for fuel cell bipolar plate applications

A process for producing an electrically conductive laminate composition for fuel cell flow field plate or bipolar plate applications. The process comprises: (a) feeding a thin metal sheet, having a first surface and a second surface, into a consolidating zone; and (b) feeding a first exfoliated graphite composite sheet onto the first surface of the metal sheet to form a two-layer precursor laminate in this consolidating zone; wherein the exfoliated graphite composite sheet comprises (i) expanded or exfoliated graphite and (ii) a binder or matrix material to bond the expanded graphite to form a cohered. The process preferably further comprises (c) feeding a second exfoliated graphite composite sheet onto the second surface of the metal sheet to form a three-layer precursor laminate. Both the first and second exfoliated graphite composite sheet may further comprise particles of non-expandable graphite or carbon in the amount of between 3% and 60% by weight based on the total weight of the non-expandable particles and the expanded graphite. Surface flow channels and other desired geometric features can be built onto the exterior surfaces of the laminate to form a flow field plate or bipolar plate by a procedure such as in-line embossing or molding. The resulting laminate has an exceptionally high thickness-direction conductivity and excellent resistance to gas permeation.
Owner:NANOTEK INSTR GRP LLC

Foam of ultra high molecular weight polyethylene and process for the preparation of the same

The expanded product of the present invention is an expanded product having a density of from 0.02 to 0.7 g/cm3, which is obtained by expanding ultra-high-molecular-weight polyethylene having a viscosity average molecular weight of from 300,000 to 10,000,000. This expanded product can be prepared by adding carbon dioxide to ultra-high-molecular-weight polyethylene in the molten state in an extruder, and expanding the resin by extrusion such that each of the surface temperature and the central part temperature of the resin immediately after discharge from the die may be a predetermined temperature, while at the same time setting the residence time and pressure of the resin at the die section to specific values. Based on these, the invention provides an expanded product with good external appearance, having a skin layer to which the functions such as light weight, insulating property, sound absorption, low dielectric constant, impact absorption, flexibility and the like can be imparted without significantly deteriorating the excellent features of abrasion resistance, self-lubrication, impact strength, cryogenic properties and chemical resistance that are inherent to ultra-high-molecular-weight polyethylene; and a process for preparation of the expanded product stably.
Owner:MITSUI CHEM INC

Decorative sheet, process for producing decorative resin molded product, and decorative resin molded product

The present invention relates to a decorative sheet for insert molding prepared by laminating at least a surface protective layer on a support comprising an ABS resin, wherein the above support has a flexural modulus of 1500 to 3000 MPa; the above support has a thickness of 100 to 500 μm; the above surface protective layer is obtained by cross-linking and curing an ionizing radiation curable resin composition; and the above ionizing radiation curable resin composition has a tensile modulus of more than 100 MPa to less than 1000 mPa which is measured by the following method and a static frictional coefficient of 1.0 or less on a surface and a decorative sheet for insert molding comprising at least a picture layer, a low glossy picture ink layer provided partially and a surface protective layer in this order on a support, wherein the above surface protective layer is present on the low glossy picture ink layer and brought into contact therewith, and it is coated over a whole surface including an area where the above low glossy picture ink layer is formed and an area where the low glossy picture ink layer is not formed; the surface protective layer is obtained by cross-linking and curing an ionizing radiation curable resin composition; and the surface protective layer has a thickness of 1 to 30 μm.
Capable of being provided are a decorative sheet which has a high abrasion resistance and a high scratch resistance and is provided with a good moldability and which has a surface protective layer causing no cracks and is provided with a high design property and used for molding a decorated molding, a production process for a decorated resin molding by using the above decorative sheet and a decorated resin molding produced by the above production process.
Owner:DAI NIPPON PRINTING CO LTD

Preparation method of lithium ion battery electrolyte corrosion resisting double-component epoxy adhesive

The invention discloses a lithium ion battery electrolyte corrosion resisting double-component epoxy adhesive and a preparation method thereof. The lithium ion battery electrolyte corrosion resistingdouble-component epoxy adhesive is composed of a component A and a component B, wherein the component A is composed of raw materials including, by weight part, 30-50 parts of bisphenol A type epoxy resin, 20-40 parts of polyurethane modified epoxy resin, 1-4 parts of coupling agent, 2-8 parts of active diluent and 15-35 parts of filler; the component B is composed of raw materials including, by weight part, 50-70 parts of modified amine hardener, 2- parts of amine hardener, 0-2 parts of imidazole hardener, 1-3 parts of accelerator and 20-40 parts of filler. The lithium ion battery electrolytecorrosion resisting double-component epoxy adhesive is stable in performing when in electrolytes, excellent in resistance to corrosion of lithium ion battery electrolytes, high in heat resistance andelectrochemical stability and capable of maintaining high strength in the electrolytes, thereby being applicable to bonding and sealing of parts exposed in electrolyte environment during lithium ion battery manufacturing and meeting the demands of lithium battery manufacturing industry on adhesive application diversity.
Owner:广州市垠瀚能源科技有限公司

Cellular connection steel plate-double-limb steel pipe concrete composite column

InactiveCN104264905AReasonable section compositionLight weightStrutsPillarsSheet steelSteel columns
The invention discloses a cellular connection steel plate-double-limb steel pipe concrete composite column, comprising a steel pipe concrete limb part 1, a steel pipe concrete limb part 2, a steel connection plate 1 and a steel connection plate 2, wherein two ends of the steel pipe concrete limb part 1 and the steel pipe concrete limb part 2 are respectively connected with each other through the steel connection plate 1 and the steel connection plate 2 to form a battened steel column; the steel connection plate 1 and the steel connection plate 2 are cellular connection plates with holes in the centers; the steel connection plate 1 and the steel connection plate 2 are respectively composed of two steel plates which are the same in shape and are provided with gaps in the edges; and the two steel plates are welded through a butt weld joint to form the cellular connection plate. According to the cellular connection steel plate-double-limb steel pipe concrete composite column, the mechanical behavior is improved, and the stability performances of a real axis and a virtual axis are fully approximate, so that the materials in the directions of two principal axes can bring into full play, the steel consumption is lowered, and the comprehensive cost of engineering is reduced.
Owner:NANJING UNIV OF TECH
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