公开(公告)号：US11060965B2

公开(公告)日：2021-07-13

申请号：US16753360

申请日：2019-03-18

Applicant: SHANDONG UNIVERSITY

Inventor： Guoqun Zhao ,  Lei Zhang ,  Guilong Wang

IPC: G01N21/03 ,  G02B21/24

Abstract: A microscopic observation system with a temperature-pressure-controllable sample cell and methods. The system can be configured to perform common optical microscopic observation and polarizing microscopic observation. The system is composed of a visual autoclave, a temperature control component, a rapid cooling component, a pressure control component and an optical imaging system, and can be configured to observe an evolution process of microstructures of polymer materials in specific atmosphere and rapid temperature and pressure changing environments in a scale of 1 μm-1 cm. A novel characterization means for researching a condensed state evolution law of polymers in high-pressure environments, and also a new thought for deep reveal of the polymer crystallization mechanism and regulation of crystallization and phase separation behaviors of the polymer materials.

公开(公告)号：US11067505B2

公开(公告)日：2021-07-20

申请号：US16753398

申请日：2019-03-18

Applicant: SHANDONG UNIVERSITY

Inventor： Guoqun Zhao ,  Lei Zhang ,  Guilong Wang

IPC: G01N21/51 ,  G01N21/03 ,  G01N21/47

Abstract: A small angle laser scatterometer with a temperature-pressure-controllable sample cell and a characterization method, the scatterometer formed by sequentially arranging a laser source, an adjustable attenuator, a beam expanding lens, a polarizer, the temperature-pressure-controllable sample cell, an analyzer, a transmission-type projection screen and an image acquisition device. The temperature-pressure-controllable sample cell is composed of a visual autoclave, a temperature control component, a rapid cooling component and a pressure control component. An evolution process of microstructures of polymer materials in specific atmosphere and rapid temperature and pressure changing environments on a scale of 0.5 μm to 10 μm. Researching a condensed state evolution law of the polymer materials in high-pressure environments can provide a process solution for regulating crystallization and phase separation of the polymer materials and new thought for further and deep reveal of a polymer material crystallization mechanism.

公开(公告)号：US12053814B2

公开(公告)日：2024-08-06

申请号：US17045645

申请日：2019-09-10

Applicant: SHANDONG UNIVERSITY

Inventor： Cunsheng Zhang ,  Mingfu Liu ,  Guoqun Zhao ,  Liang Chen ,  Xinwu Ma

IPC: B21D43/00 ,  B21C23/04 ,  B21C35/02 ,  B21D28/24 ,  B21C25/02

CPC classification number: B21D28/243 ,  B21C23/04 ,  B21C35/023 ,  B21C25/02 ,  B21D43/003

Abstract: A method for making a profile with a micro-hole, in particular using a continuous composite extrusion process, comprises embedding, in a position in a matrix of the profile to be formed where a micro-hole is to be formed, a continuous wire having a shape and size consistent with that of the micro-hole; sawing a composite profile with the wire obtained by extrusion to a desired length; and removing the wire from the sawed composite profile using a predetermined physical or chemical method without changing the matrix of the composite profile so that the micro-hole of the predetermined size and shape is formed in the predetermined position in the profile. This method is simple, does not require any large, expensive, and sophisticated equipment, can produce continuous micro-holes of different specifications, and can be used in a wide variety of applications.

公开(公告)号：US11845665B2

公开(公告)日：2023-12-19

申请号：US17048891

申请日：2018-08-31

Applicant: SHANDONG UNIVERSITY

Inventor： Guoqun Zhao ,  Jie Gong

IPC: C01B32/336 ,  C01B32/318 ,  C08J5/18

CPC classification number: C01B32/336 ,  C01B32/318 ,  C08J5/18 ,  C08J2333/20

Abstract: A preparation method of a polyacrylonitrile-based three-dimensional macroporous carbon monolith. The process route of the method includes the following steps: completely dissolving polyacrylonitrile in an organic solvent, then carrying out drying, cutting, hot-pressing and punching to obtain a foam precursor, next, preparing a polyacrylonitrile foam with a controllable pore structure by a supercritical carbon dioxide batch foaming method, and finally carrying out pre-oxidation and carbonization treatment to obtain the polyacrylonitrile-based three-dimensional macroporous carbon monolith. The preparation method of the polyacrylonitrile-based three-dimensional macroporous carbon monolith of the present invention is simple, easy to control, environmentally friendly and low in cost, thus, the present invention is conducive to large-scale production of the carbon monolith. The prepared polyacrylonitrile-based three-dimensional macroporous carbon monolith has the characteristics of uniform and controllable pore structure and good conductivity, and has a broad application prospect. The method has simple steps, convenient operation and high practicability.

公开(公告)号：US11697868B2

公开(公告)日：2023-07-11

申请号：US17844065

申请日：2022-06-20

Applicant: SHANDONG UNIVERSITY

Inventor： Liang Chen ,  Jianwei Tang ,  Zhigang Li ,  Guoqun Zhao ,  Cunsheng Zhang

IPC: C22F1/06 ,  C22F1/00

CPC classification number: C22F1/06 ,  C22F1/002

Abstract: Disclosed is a processing technology for inhibiting weld coarse grains of magnesium alloy profiles, including the following steps: preparation of a magnesium alloy ingot, homogenization, scalping, extrusion, pre-stretching at room temperature, solution treatment, quenching, stretching correction, artificial aging, etc. The processing technology can effectively control the production of weld coarse grains in extrusion and heat treatment processes of magnesium alloy profiles, and all property indexes of final products are higher than standard requirements.