Xuetao He

Beijing University of Chemical Technology

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Co-Authors

Weimin Yang

Beijing University of Chemical Technology

Haoyi Li

Beijing University of Chemical Technology

Xiaoqing Chen

Chinese Academy of Sciences

Youchen Zhang

Jiangsu University of Science and Technology

Yong Liu

Beijing University of Chemical Technology

Lisheng Cheng

Beijing University of Chemical Technology

Pengcheng Xie

Beijing University of Chemical Technology

Yumei Ding

Beijing University of Chemical Technology

Xidan Luo

Beijing University of Chemical Technology

Hua Yan

Guangdong Academy of Forestry

Cooperative Institutions

Beijing University of Chemical Technology

Chinese Academy of Sciences

Materials Processing (United States)

Tsinghua University

Agricultural Product Processing Research Institute

Qingdao University of Science and Technology

Zhejiang University

Dalian Polytechnic University

China University of Petroleum, Beijing

Tongji University

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Simulation on Electrical Field Distribution and Fiber Falls in Melt Electrospinning

Journal of Nanoscience and Nanotechnology (2013)

Xin Wang Yong Liu Chi Zhang An Ying Xuetao He

Electrospinning is now a typical way of direct and consecutive producing nanofibers. In order to comprehensively understand the change of fiber chains in falling process of electrospinning, the article import dissipative particle dynamics (DPD) mesoscale simulation method into electrospinning study. In current work, an electrical force formula is proposed after simulation of the distribution of electrostatic field in electrospinning using Finite Element Method. Then, various electrostatic force, temperature and viscosity in electrospinning system are qualitatively simulated by DPD simulation. Results showed that the falling velocity of fiber increased with the increase of electrostatic force. It was found that the lower the polymer viscosity, the quicker the fiber falls. And the diameter of fiber significantly increased with augment of viscosity. Both of above are agree with experimental results. We also found that the falling velocity of fiber is in contrast with length of polymer chains, which has not been found in experiments.

Electrospinning

Dissipative particle dynamics

Falling (accident)

10.1166/jnn.2013.7198

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Citations (19)

Study on the preparation and properties of UV curable polyurethane materials modified by organic silicon

MATEC Web of Conferences (2017)

Xidan Luo Xuetao He Pengcheng Xie Jianyun He Yumei Ding

In this paper, polyester polyol, toluene diisocyanate (TDI) and hydroxyethyl acrylate (HEA) were taken as the raw materials to synthesize polyurethane acrylate. UV curable organic silicon nano sol was synthesized by γ-methacryloxypropyltrime-thoxysilane. The UV curable polyurethane materials modified by organic silicon were prepared based on the UV curable organic silicon nano sol and synthesized polyurethane acrylate. This paper studies on the mechanical properties of organic silicon modified UV curable polyurethane materials and puts forward the micro model that inorganic phase is bonded to the resin in the form of chemical bonds. The results show that the heat resistance and mechanical properties of hybrid materials are improved with the increase of the nano silica sol’s contents , the abrasion resistance of hybrid coatings is also improved and the silica nano particles are well dispersed in the organic phase.

Chemical resistance

10.1051/matecconf/201713007010

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Citations (3)

Design of a New Type of Adjustable Chair Based on TRIZ Theory

Mechanical Research and Application (2013)

Xuetao He

A new adjustable chair structure is designed based on TRIZ theory.The comfortableness of the chair is increased based on the adaptation with the ergonomics.The angle control of the backrest is realized by manual control.The lighting module is designed to optimize the light distribution when the person is reading books on the chair.The whole process of the design,from analysis to solution,is given,and a variety of design scheme is obtained.

Design process

Source

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String electrospinning based on the standing wave vibration

Journal of Materials Science (2021)

Xiaoqing Chen Youchen Zhang Jiahao Liang Haoyi Li MingJun Chen

Electrospinning

Standing wave

10.1007/s10853-021-05845-x

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Citations (3)

Efficient preparation of poly(lactic acid) nanofibers by melt differential electrospinning with addition of acetyl tributyl citrate

Journal of Applied Polymer Science (2018)

Yongxin Qin Lisheng Cheng Yanping Zhang Xiaoqing Chen Xun Wang

ABSTRACT Poly(lactic acid) (PLA) nanofibers, as a biodegradable and environmentally friendly material, have potential applications such as biological medicine, efficient filter material, and so on. PLA nanofibers are usually prepared by solution electrospinning method with toxic solvents, such as chloroform, chloromethane, and N , N ‐dimethyl formamide. In this work, PLA nanofibers were fabricated with a self‐designed melt differential electrospinning device, assisted by addition of nontoxic acetyl tributyl citrate (ATBC) and by airflow. Molecular dynamics simulations were performed to understand the experimental results. The results revealed that the fiber diameter decreased with increasing airflow velocity, and fibers with a diameter as small as 236 nm were obtained at the highest airflow velocity of 25 m/s (with 6 wt % of ATBC). Furthermore, a significantly accelerated falling speed of the jets of about 347 times of that without airflow was achieved at a flow rate of 25 m/s. These results demonstrated that the combination of adding ATBC and airflow assistance was a good strategy to achieve finer fibers with improved stability and efficiency, making it a promising way for mass green production of PLA nanofibers. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 46554.

Electrospinning

10.1002/app.46554

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Citations (31)

Electrospinning on a plucked string

Journal of Materials Science (2018)

Xiaoqing Chen Youchen Zhang Xuetao He Haoyi Li Bin Wei

Electrospinning

10.1007/s10853-018-2870-7

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Citations (21)

Study on optimization design of rotors in continuous mixer Based on the numerical simulation

International Conference on Mechanic Automation and Control Engineering (2010)

Ying An Weimin Yang Yong Liu Xuetao He

Parametric models of rotors are constructed by Pro/E. Based on models and aiming at mixing effect, the structures of rotor in continuous mixers are optimized with the numerical simulation results of mixing analysis which are performed by finite element package Polyflow. Using this method, optimization analysis is performed for three kinds of length ratio of positive screw flight to negative screw flight in rotor of S style. The results showed that the mixing effect reach the best when the length ratio is 2:1.

10.1109/mace.2010.5535814

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Recent Advances in Cardiac Patches: Materials, Preparations, and Properties

ACS Biomaterials Science & Engineering (2022)

Yi Zhang Wenying Mu Yanping Zhang Xuetao He Yiming Wang

Cardiac patches are biomaterials that can be used for transplantation and repair of damaged myocardium by combining seed cells with the ability to form cardiomyocytes and suitable scaffold materials. On the one hand, they provide temporary support to the infarcted area, and on the other hand, they repair the damaged myocardium by delivering cells or bioactive factors to integrate with the host, which have gradually become a hot research topic in recent years. This paper summarizes the structural properties of natural myocardium and reviews the recent research progress of cardiac patches, including the seed cells and scaffold materials used in patch preparation, as well as the main methods of scaffold preparation and the structure properties of various scaffolds. In addition, a comprehensive analysis of the problems faced in the clinical implementation of cardiac patches is presented. Finally, we look forward to the development of cardiac patches and point out that precisely tunable anisotropic tissue engineering scaffolds close to natural myocardial tissue will become an important direction for future research.

Biomimetic Materials

Natural materials

Cardiac cell

10.1021/acsbiomaterials.2c00348

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Citations (37)

Study on Mechanical Properties of Micro Injection Molding UV Curing Material

Materials Science and Engineering A (2017)

Weijia Kang Jianyun He Zhenwen Liu Xidan Luo Peng-Feng Hua

Molding (decorative)

UV-Curing

10.1142/9789813226517_0077