新闻资讯
The 6th National Forum on Powder Detection and Surface Modification closed successfully at the right time for the high quality development of the powder industry
2022-12-12
The surface modification of ultra-fine powder is one of the key technologies in the preparation, processing and application of ultra-fine powder. The surface modification of the powder can increase the stability of the powder, improve the surface activity, disperse the aggregation of particles and improve the nano-effect, etc. It plays a crucial role in improving the application performance and value of the powder materials. In recent years, the powder surface modification technology represented by surface modification formula, process and equipment has made significant progress, and the gap with developed countries has been further narrowed. However, in the actual production, limited to the understanding of the principles of materials and the means of detection, there is still a lot of room for progress in this field in China. How to characterize the powder more accurately and fully understand the overall situation of powder modification technology has been a long-term focus of the entire industry.
Powder Circle held the "2022 National Symposium on Powder Detection and Surface Modification Technology (6th)" at Wanfeng Hotel in Zhuhai. The conference invited experts, entrepreneurs and other well-known curries and employees in the field of powder materials research and powder equipment in China to discuss the relevant technical problems and find new opportunities and breakthroughs for development.
On the evening before the meeting was officially held, Powder Circle also planned a round table meeting on the theme of "Powder Modification Processes and Equipment". Several experienced technical experts were sitting in the town. On the spot, all relevant technical personnel actively discussed many practical problems encountered in production and research, and the response was warm, which laid a good communication foundation for the next technical meeting.
At the beginning of the formal meeting, Mr. Sun Ke, General Manager of Powder Circle, and Dr. Zhang Fugen, General Manager of Zhuhai Truth Optical Instruments Co., Ltd., made the opening remarks. Dr. Zhang Fugen mentioned that "there is no accurate measurement, no accurate manufacture". The wonderful speech lit up the whole audience.
Here is a good review of the report of this meeting:
Topic 1: Powder Surface Modification - Brief Analysis of Main Scientific and Technical Problems
Reporter: Professor Zheng Shuilin, Doctoral Supervisor
SETTING: China University of Mining and Technology
The report comprehensively introduces the basic scientific and technological problems of surface modification of powders. The main points of design and process are explained in detail from the basic technical classification of surface modification, surface modifiers, modification process, selection of modification equipment, evaluation of modification effect, etc.
Theme 2: Exploration of production and modification of flammable and explosive powder
Reporter: Talk about Professor Linghua, Doctoral supervisor and Vice-Director
SETTING: Nanjing University of Technology and National Special Ultra-fine Powder Engineering Research Center
The report introduces some research results and application status of the National Technical Research Center for Ultra-fine Powder, and summarizes some modification methods and production difficulties in the production and modification of inflammable and explosive powder.
Theme 3: Introduction of Alpine Powder Modification (Coating Activation) Technology in Okawa, Germany
报告人：陈雅钜矿物及金属业务 中国区市场营销经理
单位：德国细川阿尔派股份有限公司
报告整体介绍了机械力改性（活化）设备的主要类型，详细讲解蜂巢磨、钉盘磨、气流磨等设备的改性原理及应用优势，并介绍相应的应用实例，总结不同应用需求适用的设备类型。
Topic 4: Difficulties in sub-micron and nano-particle size detection
Reporter: Dr. Zhang Fugen, Chairman of the Board
Unit: Zhuhai Truth Optical Instrument Co., Ltd.
The report gives a preliminary explanation of the definition of nanoparticles, the nature of light and Michaelis scattering. From the measurement principle of static and dynamic light scattering, it explains the application of different methods for laser granulometer, and summarizes the reliability range and characterization difficulties of current particle size detection.
Topic 5: Application of NMR in particle surface characteristics analysis
Reporter: Chairman Yang Peiqiang
Unit: Suzhou New Mail Analysis Instrument Co., Ltd.
The principles and applications of several types of NMR techniques are introduced. The methods for evaluating dispersion of different dispersions are explained in detail with examples. The influence of powder research on key properties of pharmaceutical industry is analyzed, and a surface characteristic analyzer based on NMR technology is introduced.
Topic 6: Characterization methods and applications of nano-powder size and Zeta potential
Reporter: Senior Application Engineer, Guo Zhibin
Unit: Dandong Baite Instrument Co., Ltd.
The report focuses on the dynamic light scattering method for particle size characterization, the detection principle of zeta potential characterization by electrophoretic light scattering method and the influencing factors on the detection results, and introduces the application cases of nano-particle size and potential characterization.
Topic 7: Detection Technology and Application Practice of Particle Sphericity
Reporter: General Manager of Yang Zhenghong
SETTING: Yi Siqi (Beijing) Technology Development Co., Ltd.
The report introduces the granularity analysis by image method, explains several typical problems in practical application, the definition of granularity and key performance characterization methods in detail, and shows the detection effect of image method by application cases, summarizes the application advantages of new generation image method granularity analysis and advanced automatic image method granularity analyzer.
Topic 8: Application of Gas Adsorption Technology in Characterization of Powder Materials (Online Report)
Reporter: Wang Huaqiang Application Engineer
Unit: Guoyi Quantum (Hefei) Technology Co., Ltd.
The report preliminarily explains the analysis principle of gas adsorption method, shows some popular materials using static method to test specific surface area and pore material characterization test methods and results, summarizes the difficulties of characterization analysis of microporous materials, and introduces the application of National Instrument Quantum Analysis Instrument and National Instrument SEM in powder.
Topic 9: Surface Energy Testing Methods and Their Application in Powder Characterization
Reporter: Shi Linlin Application Engineer
SETTING: SMASH TECHNOLOGY (BEIJING) LIMITED
This report introduces the definition of surface energy and the technical advantages of reverse gas chromatography in measuring surface energy, explains the test cases of dispersive surface energy of common materials such as lithium-ion positive and negative electrodes, and analyses the effects of different modification methods on surface energy, as well as the test results of the effects of surface energy on the compatibility of different materials.
Topic 10: Application of First Principle in the Development of Testing Methods for Laser Granularity Instruments
Reporter: Shen Xingzhi Product Manager
Unit: Zhuhai Euro-American Instrument Co., Ltd.
The report summarizes the role of particle size characterization in R&D and production, gives an overall explanation of the principles of common equivalent measurement methods, common problems of wet test, optimization ideas, test cases under different conditions, puts forward the development ideas of dry measurement methods, and makes corresponding suggestions for establishing an appropriate quality control system for powder particle size.
Theme 11: Molecular engineering design of energy storage microcapsules and its application in thermal management materials
Reported by: Professor Ni Zhuo, doctoral supervisor
Unit: Shenzhen University
The report summarizes the design principles of thermal management materials based on the design requirements of 5G materials, introduces the classification of phase change materials and their application in thermal management systems as a whole, proposes the design method of microcapsule molecular engineering, explains the research and test results of microcapsule phase change materials, and summarizes the development trend of thermal management materials.
Topic 12: Analytical method for specific surface area and pore size distribution of powder materials
Reported by: Niu Yuxin Market Manager
Unit: Beijing Jingwei Gaobo Science and Technology Co., Ltd
The report gives a detailed explanation of the test principle and application of the dynamic flow method and the static volumetric method to detect the specific surface area, interprets its differences and test results according to different types of adsorption isotherms, carries out the corresponding science popularization on the abnormal data such as the error report and special phenomenon with actual cases, and summarizes the degassing test conditions of common materials.
Topic 13: Action mechanism and use method of silane coupling agent
Reported by: Professor Ge Jianfang, Doctor
Unit: Zhongkai College of Agricultural Engineering
The report preliminarily introduces the common types, structural characteristics and action principles of silane coupling agents, comprehensively summarizes the selection principles of coupling agents, the functions of different types of coupling agents, and the use methods of silane coupling agents according to the practical research experience, explains the application examples of modification of different types of materials, and puts forward several thinking questions.
Topic 14: Atomic layer deposition technology to achieve high-quality powder coating (PALD) (online report)
Reported by: Zhuang Siming Product Manager
Unit: Funa Scientific Instruments (Shanghai) Co., Ltd
The report gives a preliminary introduction to the reaction principle, application status, gain effect of PALD technology, technical difficulties and several current process schemes of atomic layer deposition technology, focusing on several advanced PALD technologies such as fluidized bed, rotating bed and vibrating bed, and summarizing the application of ALD coating technology in several hot fields.
Subject 15: Effect of particle morphology on its properties and preparation process
Reported by: Dr. Feng Pingcang, Chairman
Unit: Sichuan Ruichi Tuowei Machinery Manufacturing Co., Ltd
Starting from personal actual work experience and important projects involved, the report comprehensively explains the development context of powder modification equipment and material modification application at home and abroad, shows the importance of particle research with several typical material modification cases, and explains the core points and development direction of various modification equipment in simple terms.
Theme 16: powder functional modification technology and application
Reported by: Chen Ruisheng, Deputy General Manager
Unit: Dongguan Wuxin Material Co., Ltd
The report initially introduces several powder functional modification technologies and commonly used advanced equipment, and explains in detail the equipment developed by the company, such as nail plate mill, honeycomb mill, etc. from the aspects of working principle and equipment characteristics, and summarizes the localization and application status of the current advanced modification equipment.
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