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242results about How to "Retain flexibility" patented technology

Hot press molding device for carbon fiber enhanced polyether-ether-ketone (PEEK) composite material and technological method thereof

The invention provides a hot press molding device for a carbon fiber enhanced polyether-ether-ketone (PEEK) composite board. The hot press molding device comprises a hydraulic machine, a molding die and a vacuum system. According to the device, a heating unit is separated from the hydraulic machine, and a heating pipe is used for heating the die to achieve a high temperature hot pressing function; by carrying out hot press molding in a vacuum environment, the content of bubbles in resin can be greatly reduced, and the test piece surface smoothness and workpiece performances are improved; a cooling unit is arranged in the die, and cooling speed is regulated by regulating the flow and temperature of high pressure cold air, so as to control the crystallinity of matrix resin and realize flexible selection between high strength and high toughness. Correspondingly, the invention also provides a hot press molding method for the carbon fiber enhanced polyether-ether-ketone (PEEK) composite board. A carbon fiber enhanced polyether-ether-ketone (PEEK) composite board produced by adopting the device and the method disclosed by the invention through hot press molding is simple in production equipment and solves the problems that material internal porosity is large, resin impregnation fiber is insufficient, test piece performance is insufficient, molding cycle is long and the like during production of polyether-ether-ketone resin with high melting point and high viscosity.
Owner:HUAZHONG UNIV OF SCI & TECH

Method for packaging organic electronic device

The invention discloses a method for packaging an organic electronic device. The method for packaging the organic electronic device comprises the following steps that a plurality of layers of composite thin films are deposited on the back side of a lining material before the electronic device is prepared, the layers of composite thin films are deposited on the surface of the organic electronic device after the electronic device is prepared. By the adoption of a chip scale packaging method, a packaging process is integrated to a device manufacturing technological process, and therefore the original method of firstly manufacturing the device on a wafer and then the device is singly packaged after being cut is replaced. The method for packaging the organic electronic device has the advantages of improving efficiency and reducing cost. By the adoption of packaging through organic / inorganic layers of composite thin films in an innovative mode, water and oxygen can be isolated, therefore, the service life of the organic electronic device is greatly prolonged, flexible packaging can be achieved, and foldable and bending performance of the organic electronic device can be saved to the maximum. Eventually, according to the method for packaging the organic electronic device, low-temperature film formation below 120 DEG C is achieved, and heat damage to the device and plastic lining is reduced.
Owner:INST OF MICROELECTRONICS CHINESE ACAD OF SCI

A preparation method of an all-solid-state polymer electrolyte and an all-solid-state polymer battery

The invention relates to a preparation method of an all-solid-state polymer electrolyte and an all-solid-state polymer battery. The preparation steps of the electrolyte are as follows: polymerizing apolycarbonate monomer with a carboxyl or hydroxyl polycarbonate monomer to obtain a polymer A; Adding polyether monomer, polyethylene glycol propylene monomer and functional polymer into solvent, adding lithium salt, initiator, selectively adding auxiliary agent and functional filler, and carrying out initiation reaction to obtain polymer B; Adding polymer A and polymer B into solvent and selectively adding carboxyl crosslinking agent to uniformly mix to obtain polymer mixing system; The hydroxyl crosslinking agent is added into the polymer mixing system and uniformly mixed, the obtained mixedliquid is uniformly coated on a mold, and the crosslinking reaction is carried out under an inert gas atmosphere in a vacuum drying box; At that end of the reaction, the polymer electrolyte membraneis vacuum dry in an inert gas atmosphere to obtain an all-solid polymer electrolyte membrane. The solid polymer electrolyte of the invention has good compatibility and mechanical strength and high room temperature ionic conductivity.
Owner:ZHUHAI COSMX BATTERY CO LTD

LED-chip shining-light-bar base plate material and LED bulb lamp

The invention relates to an LED-chip shining-light-bar base plate material and an LED bulb lamp. The LED-chip shining-light-bar base plate material and the LED bulb lamp are characterized in that the LED bulb lamp is composed of shining strips (1), a driving power source (2), a glass bulb shell (3), a glass support core column (4) and an electric connector (5); the glass bulb shell (3) and the glass support core column (4) are subjected to vacuum sealing to a cavity to be filled with high thermal conduction gas, the glass support core column (4) and the shining strips (1) fixed on the glass support core column (4) are contained in the sealed cavity; the shining strips (1) are sequentially electrically connected with the driving power source (2) and the electric connector (5); the LED-chip shining strips (1) are composed of YAG, wherein Ce raw material powder and nitride red fluorescence powder are fired to achieve the effect that one face of the base plate material (6) comprises LED blue light chips (9), and the surfaces of the blue light chips (9) are coated with a fluorescent powder layer (7). According to the LED-chip shining-light-bar base plate material and the LED bulb lamp, low-cost preparing of the high-quality transparent fluorescence polycrystal base plate material is achieved with the novel environment-friendly aqueous tape-casting technology. The fluorescence polycrystal base plate material which is high in lighting efficiency, color rendering index and optical transmittance and the bulb lamp which is good in color-temperature consistency heat dissipation, high in reliability and long in service life are obtained.
Owner:张伯文

Bituminous mixture using DVS (direct vat set) high-adhesion modifier and preparation method thereof

The invention relates to a bituminous mixture using a DVS (direct vat set) high-adhesion modifier and a preparation method thereof. The bituminous mixture is prepared from aggregates, a DVS high-adhesion bituminous mixture modifier and matrix asphalt by mixing, wherein the modifier is prepared from high-desulfurization-degree reclaimed rubber, modified high-temperature coal tar pitch and a skeleton proppant by stirring and extruding. Waste rubber is deeply activated under the high temperature and high shearing action of a twin screw extruder, so that the high-desulfurization-degree reclaimed rubber is obtained; then, the mixture of the modified high-temperature coal tar pitch modified by rubber pyrolysis oil, the high-desulfurization-degree reclaimed rubber and the skeleton proppant is fully mixed by using a screw, and then extruded and granulated so as to obtain the DVS high-adhesion bituminous mixture modifier; and finally, the modifier, the aggregates and the matrix asphalt are mixed so as to obtain a DVS high-adhesion bituminous mixture. The bituminous mixture disclosed by the invention has excellent water damage resistance, good high-temperature rutting resistance and low-temperature crack resistance.
Owner:TIANJIN HI TECH ENVIRONMENT DEV CO LTD

Direct-vat type high-adhesion bituminous mixture modifier and preparation method thereof

The invention discloses a direct-vat type high-adhesion bituminous mixture modifier and a preparation method thereof. The modifier is prepared by regenerated rubber with high desulfurization degree, modified high-temperature coal tar pitch and a skeleton proppant at the mass ratio of (30-50) to (30-50) to (5-20) in stirring and extruding manners. The preparation method of the modifier comprises the following steps: deeply activating waste rubber through high-temperature and high-shearing action of a double-screw extruder, thus obtaining the high-desulfurization degree regenerated rubber; fully mixing a mixture of the modified high-temperature coal tar pitch, the high-desulfurization degree regenerated rubber and a skeleton backing material, which is modified by rubber pyrolysis oil under the blending action of a screw; and extruding and pelleting, so as to prepare the direct-vat type high-adhesion bituminous mixture modifier. The modifier disclosed by the invention is directly fed when the mixture is stirred, no extra equipment is used, and the process is simple and easy to operate; the bituminous mixture prepared by the method has excellent moisture damage resistance, good high-temperature anti-rutting performance, low-temperature crack resistance and excellent economic and social benefits.
Owner:TIANJIN HI TECH ENVIRONMENT DEV CO LTD
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