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34results about How to "Elimination method" patented technology

Device for adjusting wing surface of wing wind tunnel blowing model and adjustment method

InactiveCN102221444AEliminate theoretical flawsElimination methodAerodynamic testingControl signalActuator
The invention relates to a device for adjusting the wing surface of a wing wind tunnel blowing model and an adjustment method. In the device provided by the invention, the width of a support base is equal to the chordwise length of the wing wind tunnel blowing model; the length of the support base is equal to the spanwise length of the wing wind tunnel blowing model; multiple rows of actuators are distributed along the length direction of the support base; each row of actuators comprises multiple actuators; each actuator is respectively positioned on each design point of the wing and corresponds to the horizontal ordinates of each design point of the wing; the actuators are installed on the upper surface and lower surface of the support base in pairs; and the actuators in the same column on the same surface are connected through a data line and used for receiving the same control signals and carrying out the equal amplitude displacement. The invention provides a convenient and practical wing surface deformation adjusting mechanism for the wing surface deformation based on the wing shape design of a wind tunnel experiment, establishes a high-efficiency wing shape optimization design system by means of the environment and conditions of the wind tunnel experiment and provides different wing shape results for the engineering actually, thereby improving the design level and design efficiency of the existing wing shape.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Method for processing PET/PA ferrous alloy color masterbatch by chemically depolymerizing waste polyester textiles

The invention provides a method for processing PET/PA ferrous alloy color masterbatch by chemically depolymerizing waste polyester textiles. The method is characterized by comprising the following steps: preparing components including, by weight, 20 parts of PET, 40 parts of blown-film-grade LDPE, 30 parts of black carbon black and 10 parts of a compatibilizer; uniformly mixing the prepared components; and performing extrusion and granulation so as to obtain PET/LDPE ferrous alloy blown-film-type color masterbatch. Or the method comprises the following steps: preparing components including, by weight, 30 parts of PET, 30 parts of extrusion-grade LLDPE, 30 parts of black carbon black and 10 parts of a compatibilizer; uniformly mixing the prepared components; and performing extrusion and granulation so as to obtain PET/LLDPE ferrous alloy extrusion-type color masterbatch. Or the method comprises the following steps: preparing components including, by weight, 40 parts of PET, 20 parts of injection-grade HDPE, 30 parts of black carbon black and 10 parts of a compatibilizer; uniformly mixing the prepared components; and performing extrusion and granulation so as to obtain PET/HDPE ferrous alloy injection-type color masterbatch.
Owner:PLASTIC UNION NEW MATERIAL TECH HUBEI

Method for treating zinc sulfide concentrate powder

The invention discloses a method for treating zinc sulfide concentrate powder. The method comprises the steps of: a) carrying out size mixing on the zinc sulfide concentrate powder in a first operation tank to obtain slurry; b) adjusting acid liquor in a second operation tank so as to obtain material acid; and c) respectively adding the slurry obtained in the step a) and the material acid obtained in the step b) into an autoclave for pressure leaching. The method for treating the zinc sulfide concentrate powder according to the embodiment of the invention is simple in principle, high in feasibility and remarkable in effects.
Owner:YUNNAN METALLURGICAL GROUP +1

Method for preparing crude diisooctyl terephthalate by cracking polyester waste textiles

Polyester waste textiles are heated and dissolved in ethylene glycol, the obtained solution is filtered to remove dregs, and isooctyl alcohol is added to achieve esterification and exchange out the ethylene glycol in order to form crude diisooctyl terephthalate.
Owner:PLASTIC UNION NEW MATERIAL TECH HUBEI

Method for preparing PBT raw material by chemical reduction of PET waste bottle material

The invention provides a method for preparing a PBT raw material by chemical reduction of a PET waste bottle material. The method comprises the following steps: heating and melting the PET waste bottle material by using butanediol, performing filtration, performing decolorization, performing purification, adding a catalyst, and performing polymerization to form PBT.
Owner:PLASTIC UNION NEW MATERIAL TECH HUBEI

Method for modifying PET obtained by depolymerization of polyester waste textiles, purification and polymerization and extrusion PA6

The invention discloses a method for modifying PET obtained by chemical depolymerization of polyester waste textiles, purification and polymerization and an extrusion-grade PA6 material to form an alloy extrusion novel material in Central Plastic Union New Material Technology (Hubei) Co., Ltd. The method comprises the following steps: performing depolymerization on the polyester waste textiles byusing glycerin residues heated to 260-280 DEG C, performing filtration, performing decolorization, performing purification, performing polymerization to form the PET, adding auxiliary agents such as acompatibilizer, adding a certain proportion of the extrusion-grade PA6 material, performing uniform mixing, and performing extrusion granulation to obtain the PET and PA6 extrusion special alloy novel material.
Owner:PLASTIC UNION NEW MATERIAL TECH HUBEI

Modification method through depolymerization and purification of TPA from waste polyester textiles and addition of film-blowing LLDPE

The invention discloses a modification method for preparing a novel special alloy material used for film blowing through chemical depolymerization and purification of TPA from waste polyester textiles and addition of a film-blowing-grade LLDPE material. The method comprises the following steps: heating glycerin residue to 260 to 280 DEG C, depolymerizing the waste polyester textiles with heated glycerin residue, carrying out filtering, decolorizing and purifying so as to obtain TPA, adding modifying auxiliary agents like a compatibilizing agent, then adding the film-blowing-grade LLDPE material in a certain proportion, and carrying out extrusion granulation so as to obtain a novel special TPA / LLDPE alloy material used for film blowing.
Owner:PLASTIC UNION NEW MATERIAL TECH HUBEI

Method for preparing PBT raw material through chemical reduction of PET wastes

The invention relates to a method for preparing a PBT raw material through chemical reduction of PET wastes. The method comprises the steps of dissolving the PET wastes with butylene glycol through heating, then, carrying out filtering, then, carrying out decoloring, carrying out purifying to obtain BHBT, and adding a catalyst to synthesize PBT.
Owner:PLASTIC UNION NEW MATERIAL TECH HUBEI

Method for preparing PBT through chemical reduction of waste dacron textiles

The invention relates to a method for preparing PBT through chemical reduction of waste dacron textiles. The method comprises the steps of heating and dissolving the waste dacron textiles with butanediol, performing filtering and decolorizing, then conducting purification to obtain BHBT, and adding a catalyst to polymerize PBT.
Owner:PLASTIC UNION NEW MATERIAL TECH HUBEI

Method for preparing crude diisobutyl terephthalate by pyrolysis of polyester waste textiles

The invention discloses a method for preparing crude diisobutyl terephthalate by pyrolysis of polyester waste textiles. The polyester waste textiles are dissolved by ethylene glycol through heating, dregs are filtered out, isobutanol is added for esterification, and the ethylene glycol is exchanged to form the crude diisobutyl terephthalate.
Owner:PLASTIC UNION NEW MATERIAL TECH HUBEI
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