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11 条记录 (耗时 0.035 秒)

    Millable polyurethane rubber, preparation method and use thereof
    2.
    发明公开
    Millable polyurethane rubber, preparation method and use thereof 审中-公开

    公开(公告)号：US20240336719A1

    公开(公告)日：2024-10-10

    申请号：US18461953

    申请日：2023-09-06

    申请人： Qingdao University of Science & Technology

    发明人： Jinchun LIU ,  Dongxu ZHAO ,  Li LIU ,  Xuemeng WANG

    IPC分类号： C08G18/42 ,  C08G18/22 ,  C08G18/24 ,  C08K3/06 ,  C08K3/20

    CPC分类号： C08G18/4238 ,  C08G18/222 ,  C08G18/227 ,  C08G18/246 ,  C08K3/06 ,  C08K3/20

    摘要： A millable polyurethane rubber, preparation method and use thereof. Raw materials thereof comprise the following ingredients in part by weight: polyester diol 100 parts; micromolecular diol 2-10 parts; diisocyanate 5-20 parts; antioxidant 0.1-0.5 part; catalyst 0.03-0.08 part; peroxide 1-1.5 parts and/or sulfur 1-1.5 parts. By structural design and formula adjustment, the millable polyurethane rubber has better low temperature resistance and gas permeability compared with conventional millable polyurethane rubbers, by using special micromolecular diol, synthesizing with polyester diol at a specific ratio and vulcanizing with peroxide or sulfur, molecular strands of the polyurethane have excellent smoothness and strong interaction forces, the millable polyurethane rubber has at the same time characteristics such as time good low temperature compression set, low gas permeability and high mechanical strength and can be used in manufacturing of films in scuba suspension systems.

    METHOD FOR SYNTHESIS AND MODIFICATION OF BIO-BASED POLYAMIDE
    4.
    发明申请
    METHOD FOR SYNTHESIS AND MODIFICATION OF BIO-BASED POLYAMIDE 有权

    公开(公告)号：US20220332891A1

    公开(公告)日：2022-10-20

    申请号：US17659071

    申请日：2022-04-13

    申请人： Qingdao University of Science & Technology

    发明人： Chuanhui Gao ,  Jing Zhang ,  Yiliang Gao ,  Ying Ma ,  Yuetao Liu ,  Chuanxing Wang ,  Yumin Wu

    IPC分类号： C08G69/28

    摘要： The present disclosure is related to the field of polymer materials, and, in particular, to a method for synthesizing a bio-based polyamide. More specifically, the disclosure provides a method for synthesizing a block copolymer consisting of a hard segment of a polyamide prepared via solid state polycondensation and a soft segment of a polyether polyol. Due to a reaction of itaconic acid, which contains a carbon-carbon double bond, with hexamethylenediamine, the bio-based polyamide is greatly different from conventional linear polyamides and exhibits a lower glass transition temperature and excellent mechanical properties. Unlike conventional processes for preparing modified polyamides, the bio-based polyamide is synthesized, according to the method, through chain extension of a polyamide with an excess amount of a diisocyanate based on amine value of the polyamide and then crosslinking of the resulting product with a polyether polyol by using glycerol as a crosslinking agent.

    Method for preparing carbon material
    6.
    发明授权
    Method for preparing carbon material 有权

    公开(公告)号：US11898265B2

    公开(公告)日：2024-02-13

    申请号：US17695063

    申请日：2022-03-15

    申请人： Qingdao University of Science & Technology

    发明人： Yan He ,  Dianming Chu ,  Wenjuan Bai ,  Qianpeng Dong

    IPC分类号： C25D9/08 ,  C25D21/12

    CPC分类号： C25D9/08 ,  C25D21/12

    摘要： Disclosed is a method for preparing a carbon material, comprising applying a voltage to an electrically conductive medium to form an electrically conductive path in an oxygen-free environment containing a carbon source and a catalyst to obtain the carbon material, wherein the electrically conductive medium includes a solid substrate or a liquid-phase electrically conductive system; under the condition that the electrically conductive medium is the liquid-phase electrically conductive system, the carbon material is obtained in the liquid-phase electrically conductive system; and under the condition that the electrically conductive medium is the solid substrate, the carbon material is obtained on a surface of the solid substrate.

    HOMOGENEOUS RARE EARTH CATALYST AND PREPARATION METHOD AND USE THEREOF
    7.
    发明公开
    HOMOGENEOUS RARE EARTH CATALYST AND PREPARATION METHOD AND USE THEREOF 审中-公开

    公开(公告)号：US20230303736A1

    公开(公告)日：2023-09-28

    申请号：US18080161

    申请日：2022-12-13

    申请人： Qingdao University of Science & Technology

    发明人： Feng Wang ,  Xuequan Zhang ,  Heng Liu ,  Chunyu Zhang

    IPC分类号： C08F210/12 ,  C08F2/06 ,  C08F2/60 ,  C08F4/54

    CPC分类号： C08F210/12 ,  C08F2/06 ,  C08F2/60 ,  C08F4/545

    摘要： The present disclosure provides a preparation method of a homogeneous rare earth catalyst. In the present disclosure, a depolymerizing agent is introduced into the homogeneous rare earth catalyst to promote complete depolymerization of an alkyl aluminum trimer into monomolecular alkyl aluminum. As a result, there is an increase in the number of the alkyl aluminum which serves as an effective chain transfer agent, resulting in a greatly improved chain transfer rate, such that a polymerization system has completed the chain transfer in an early stage of the reaction. Accordingly, an aluminum terminal molecular chain has an increased concentration, leading to an accelerated exchange with an active center propagating chain and a decreased influence caused by an increased viscosity of the system, maintaining living polymerization of the system.

    System and method for electrospinning superfine fiber bundling
    8.
    发明授权
    System and method for electrospinning superfine fiber bundling 有权

    公开(公告)号：US11746440B2

    公开(公告)日：2023-09-05

    申请号：US17979062

    申请日：2022-11-02

    申请人： Qingdao University of Science & Technology

    发明人： Hongbo Chen ,  Wenwen Han ,  Hui Liang ,  Chuansheng Wang ,  Weimin Yang

    IPC分类号： D01D5/00

    CPC分类号： D01D5/0076 ,  D01D5/0069

    摘要： Disclosed is a system and a method for electrospinning superfine fiber bundling, belonging to the technical field of artificial fiber manufacturing, and comprises a spinning nozzle and a bundling disk which are coaxially arranged; the spinning nozzle is arranged at an upper part of the bundling disk; the bundling disk is connected with a motor through a coupling; the motor rotates to drive the bundling disk to rotate; a guide groove is also arranged outside the bundling disk; a center of the bundling disk is provided with a shaft; the insulated outer ring, the central conductive ring, the insulated inner ring and the shaft are fixed by bonding or thermal compounding; inner and outer edges of the central conductive ring are smooth circular arc rounded corners; an inner edge of the insulated outer ring and an outer edge of the insulated inner ring are corresponding smooth rounded corners.

    SYSTEM AND METHOD FOR ELECTROSPINNING SUPERFINE FIBER BUNDLING
    9.
    发明公开
    SYSTEM AND METHOD FOR ELECTROSPINNING SUPERFINE FIBER BUNDLING 审中-公开

    公开(公告)号：US20230160107A1

    公开(公告)日：2023-05-25

    申请号：US17979062

    申请日：2022-11-02

    申请人： Qingdao University of Science & Technology

    发明人： Hongbo CHEN ,  Wenwen HAN ,  Hui LIANG ,  Chuansheng WANG ,  Weimin YANG

    IPC分类号： D01D5/00

    CPC分类号： D01D5/0076 ,  D01D5/0069

    摘要： Disclosed is a system and a method for electrospinning superfine fiber bundling, belonging to the technical field of artificial fiber manufacturing, and comprises a spinning nozzle and a bundling disk which are coaxially arranged; the spinning nozzle is arranged at an upper part of the bundling disk; the bundling disk is connected with a motor through a coupling; the motor rotates to drive the bundling disk to rotate; a guide groove is also arranged outside the bundling disk; a center of the bundling disk is provided with a shaft; the insulated outer ring, the central conductive ring, the insulated inner ring and the shaft are fixed by bonding or thermal compounding; inner and outer edges of the central conductive ring are smooth circular arc rounded corners; an inner edge of the insulated outer ring and an outer edge of the insulated inner ring are corresponding smooth rounded corners.

    METHOD FOR PREPARING CARBON MATERIAL
    10.
    发明公开
    METHOD FOR PREPARING CARBON MATERIAL 审中-公开

    公开(公告)号：US20230212775A1

    公开(公告)日：2023-07-06

    申请号：US17695063

    申请日：2022-03-15

    申请人： Qingdao University of Science & Technology

    发明人： Yan HE ,  Dianming CHU ,  Wenjuan BAI ,  Qianpeng DONG

    IPC分类号： C25D9/08 ,  C25D21/12

    CPC分类号： C25D9/08 ,  C25D21/12

    摘要： Disclosed is a method for preparing a carbon material, comprising applying a voltage to an electrically conductive medium to form an electrically conductive path in an oxygen-free environment containing a carbon source and a catalyst to obtain the carbon material, wherein the electrically conductive medium includes a solid substrate or a liquid-phase electrically conductive system; under the condition that the electrically conductive medium is the liquid-phase electrically conductive system, the carbon material is obtained in the liquid-phase electrically conductive system; and under the condition that the electrically conductive medium is the solid substrate, the carbon material is obtained on a surface of the solid substrate.