Bo Guan Yue specializes in the 6th "Bonding Day" Bonding & Composite Technology Exchange Conference (Part 1)

On May 17, 2021, the two-day Sixth "Bonding Day" Bonding & Composite Technology Exchange Conference opened successfully. The conference was held at the Platinum Hanjue Hotel in Changzhou. A total of 348 people attended the conference. Guests from 7 major industries and 120 companies held a high-standard technical exchange conference.

The chairman of the conference, Professor Fraunhofer IFAM from the Institute of Advanced Materials and Manufacturing Technology of the Fraunhofer Academy of Sciences in Germany, and Professor Andreas Groß, chairman of the DIN6701 & DIN2304 standard drafting committee, gave a speech from a distance, welcomed all the guests who came from afar, and expressed his regret that he could not come to the scene in person. Pity.

In the field of bonding and composite materials, quality assurance is an absolute obligation. Quality assurance requires a complete system for control, which is absolutely necessary!

—— Fraunhofer IFAM Professor Andreas Groß, Fraunhofer Institute of Science, Germany

Mr. Zhang Yuxian, General Manager of Yifa Bonding & Composite Materials Research Institute, gave a speech on behalf of Professor Andreas Groß titled: "The Basis for Successful Adhesive Joints". First, he introduced why qualified personnel are the basis for the successful application of bonding technology and the difficulties of bonding technology. He also introduced the development history of Fraunhofer IFAM, the German Fraunhofer Institute of Science, as the world's top bonding and composite technology institute. Relying on the ISO17024 international standard for personnel qualification training, it can be ensured that experts in the field of scientific research directly impart knowledge to students, and the imparted content is updated in a timely manner to ensure its accuracy. At the same time, he introduced the development trend of bonding standards moving closer to ISO/DIS 21368 in the future, as well as the development status of composite material system standards.

The certificates of the Fraunhofer Academy of Sciences are valid all over the world, and its expert capabilities are internationally recognized. The more than 28,000 German scientists of the Fraunhofer Academy of Sciences in the fields of natural sciences and engineering technology are our strong backing.

Dr. Zhang Jingfen from Yifa Bonding and Composite Materials Research Institute made the "Bonding Day" and the annual update report of Yifa Bonding and Composites Research Institute. As the scale of "Bonding Day" continues to expand, its format is also constantly innovating. At the same time, Yifa has also begun to build a library database website, hoping to provide an information sharing platform for more adhesive practitioners. Yifa Bonding and Composites Research Institute relies on the strong technical support of Germany's Fraunhofer IFAM in the field of bonding and composite materials. Its curriculum system continues to expand and enrich, and has trained more than 4,000 people with experience in bonding and composite materials at home and abroad. Qualified engineering and technical personnel at all levels. Covering industrial fields such as rail transit, automobiles, home appliances, electronics, aviation, aerospace, shipbuilding, construction, wind energy, photovoltaics, adhesives and composite manufacturing. Students from India, Malaysia, Singapore, Bahrain, Japan, Thailand and other countries and Taiwan have participated in Yifa’s English EAS and EAB courses and obtained qualification certificates issued by Fraunhofer IFAM in Germany. Yifa Bonding and Composite Material Testing Center has third-party testing qualifications recognized by CNAS. Its testing capabilities include bonding type verification, new project process evaluation, incoming material and accompanying sample testing, failure mode analysis, and composite material-related testing projects.

Yifa Bonding and Composite Materials Research Institute strives to become a leader in the research, promotion and standardization of bonding and composite materials application technology in China step by step.

The heavyweight guest on Bonding Day, Professor Yi Xiaosu from the University of Nottingham Ningbo China, a German engineering doctor, professor and doctoral supervisor, shared with everyone the topic: aerospace structural bonding and composite material technology. Professor Yi introduced the topic in an easy-to-understand manner, and visually demonstrated the complexity of structural adhesive testing to the participants through a large number of microscopic photos. At the same time, the surface morphology is also different from the angle of the substrate, especially the surface of aluminum alloy. Through a series of microscopic photos, participants can easily understand the mechanical adhesion of aluminum alloys when adhering to low-viscosity epoxy primers, and can also easily understand the relationship between true surface area and nominal surface area, and the impact on the interface. Gain a deeper understanding of the effective surface area that actually forms chemisorption and polar attraction. He also focused on the aging issues of structural adhesives, including adhesive layer aging, interface aging, media aging and other issues, as well as the physical and chemical properties of aging. This once again confirms that the aging test requirements for bonded joints in DIN6701-3 are extremely necessary.

Mr. Zhao Yazhao, engineer of the Standards and Quality Department of the Integrated Panel Center of the China Building Materials Industry Planning and Research Institute, shared with you the topic: Current status and development strategies of the building insulation and decorative integrated panel industry. As the construction industry's requirements for fire prevention, environmental protection, and energy saving gradually increase, the insulation integrated panels are currently developing very rapidly, and the requirements for technology are also getting higher and higher, including diversification of panel materials, innovation of insulation materials, coating technology, and innovative As a result, it also places extremely high requirements on bonding. Zhao Gong said that the common bonding problems in the integrated board industry deserve to be solved through continuous industry exchanges and training.

After the wonderful speeches by famous experts, there was an "Expert Discussion" session. This session was proposed by Wang Yuquan, Director of CRRC Technology Department. The purpose was to share the experiences and experiences of experts from all walks of life in the bonding field through this session to achieve cross-border integration. , Bo Guan makes an appointment. The guests on the stage had lively discussions, and the most heated topic was: looking at bonding from the national and industry strategic levels.

Director Wang Yuquan has promoted the vigorous development of the DIN6701 bonding system through the prosperity of overseas markets. He hopes that scientific research institutes, universities, and industrial enterprises can cooperate wholeheartedly to promote the construction of the standardization system. Li Gong, a senior supplier manager at Siemens, also expressed that with the increasing promotion of bonding systems, domestic bonding technology has made great progress. In the past, he was worried about the quality of "domestic bonding parts" and now he is positive about domestic bonding technology. He also hopes to promote the construction of a bonding system for manufacturers related to the supply chain, so as to avoid the problem of product quality inconsistencies between audits and daily production. Professor Yi said that the purpose of passing the examination and certification is to make the special bonding process better.

In addition, there are 4 issues related to bonding maintenance, bonding coating sequence, bonding system implementation, lightweight material bonding, etc. The on-site experts conducted in-depth exchanges and discussions on the above-mentioned issues, sparking new sparks during the collision of ideas, and also providing various inspirations for the on-site guests. The theme of the Bonding Day of "Extensive Views and Appointments" was reflected.

Mr. Chen Xijia, technical manager of Yifa Bonding & Composite Materials Research Institute, gave a speech entitled: Design and Verification of Bonding & Composite Material Structure. He shared the issues that need to be paid attention to in the design and testing of bonding and composite materials based on project cases, including the simulation calculation and testing requirements of elastic glue and high modulus glue, the development process of composite material products and precautions during the testing process. wait. These cases aroused widespread interest among the guests present, especially the simulation calculation methods, test projects and the newly developed adhesive selection service platform developed by Yifa.

Mr. Wang Xin, a technical expert from 3M China Co., Ltd., 3M Industrial Adhesives and Tape Product Department, and executive director of Beijing Adhesive Society, gave a speech entitled: New Generation Tape and Structural Adhesive Technology. 3M has a complete set of bonding solutions, including 3M VHB tape, which can be used for bonding lighting, reinforcements, and baseboards in the rail transit industry, and 3M Scotch-Weld toughened epoxy structural adhesive, which has excellent bonding Performance and fatigue strength, suitable for bonding of inert metals and composite materials, and can even replace welding in many aspects. The most eye-catching thing is the Guinness World Record of XX glue, which can even lift a 10T truck, which makes people feel the great charm of bonding.

Dr. Yu Zhijin, senior lecturer and auditor of Yifa, shared the topic: Management-related findings and suggestions in DIN6701 audits. He gave sincere advice in a humorous tone. In particular, the analysis of the two skin problems discovered during the audit and some interesting test report data taught us that science cannot be faked, and quality must be down-to-earth. Qualified auditors have a keen eye, and only through continuous improvement of quality and technical levels can we This is what the auditors are most concerned about.

Yu Xun, senior manager of the engineering and manufacturing department of Webasto Roof Heating System (Shanghai) Co., Ltd., gave a speech titled: Application of bonding technology in automotive sunroof products. Manager Yu’s talk about the bonding of automobile sunroofs was refreshing to the guests. He shared about the types, structures, glue requirements and automated glue application process of automobile sunroofs and the application of adhesives in automobile parts, especially the process development of the new technology WST+. The process and technical features were introduced in detail, which inspired everyone deeply.

The "Bonding Day" forum has become more and more influential, attracting the sponsorship and participation of first-class adhesive manufacturing companies and glass manufacturing companies at home and abroad. 3M, Bostik, Zhongyuan Siland, Huashang Glass, etc. have all brought their flagship products. The latest technology came to the scene, and their booth was crowded with people and the exchanges were lively. 

At the welcome dinner on the first day of the conference, since most of the guests attending the meeting were EAS (European Adhesive Technicians) and EAE (European Adhesive Engineers) students trained by Yifa, the dinner was like a large-scale class reunion, and students met and drank. Extremely affectionate! New members and old members got to know each other, and the atmosphere at the dinner was extremely lively!

At the same time, this year’s Bonding Day has added a lottery draw and a Q&A session with prizes. The prizes are particularly exciting. Guests on site participated in the event one after another, and the scene was very lively!

This is the live report of the first day of the meeting. Please stay tuned for the live report of the second day~