Speaker: Prof.Hua Deng

Time: 10:00, February 29, 2024, 10:00 a.m.

Venue: Conference Room 346, Building 25, Wushan Campus

Abstracts:

Functionalization is highly valued as an important direction in the development of polymer composites, and its functionalities include: electrical conductivity, thermal conductivity, dielectricity, electromagnetic shielding, and deformation sensing. However, the effective contribution of the intrinsically excellent functionality of these fillers in the overall composites is still very limited and needs to be improved urgently. On the other hand, the functional fillers are usually encapsulated by polymer molecular chains or surface-modified molecules in the polymer matrix, which prevents the formation of direct overlap between the fillers. To address the above problems, the authors focus on the basic scientific issue of confinement, assembly and relaxation of inorganic fillers in organic/inorganic composites, and innovatively introduce polymer dendrimers into the construction process of functional polymer composites, which have strong adhesion to various substrates and strong network construction ability. These polymer dendritic particles have strong adhesion to various substrates, strong network construction ability, and excellent ability to grab the functional fillers onto the surface. As a result, it is possible to prepare functional composite films with high filler content, direct filler-to-filler networks, and mechanical flexibility. In addition, the method can be used to attach a large number of fillers to a porous structure, thus realizing direct contact between the functional filler and the medium (e.g. water) in the porous structure. The group has been actively exploring the method for moisture generation, thermoelectricity, elastic conductors and radiation cooling materials. This novel strategy provides useful ideas for a range of applications. The related industrialization results were successfully applied to Huawei Mate60 series cell phone antenna modules.

Biography of Invited Speaker： 

 Prof. Hua Deng works in the School of Polymer Science and Engineering, Sichuan University. He is mainly engaged in the preparation of conductive, deformation-sensitive and other functional polymer composites and their functional applications. He has proposed a series of new methods to regulate the morphology and structure of inorganic filler networks. He has published more than 90 papers as the first/corresponding author (including Nature Communications, Energy & Environmental Science, Advanced Functional Materials, etc.), with more than 4000 citations and an H-index of 45, and his results have been highly evaluated by his peers. Outstanding Youth Fund, New Century of Ministry of Education, Sichuan Academic and Technology Leaders, and Sichuan Jieqing; awarded the First Prize of Sichuan Scientific and Technological Progress (Third), 2018 Early Career Award of the International Polymer Processing Society (PPS), and selected as Top 10 Progresses in Basic Research of Sichuan University in 2023; served as Nanocomposites Journal He is an associate editor of Nanocomposites, an editorial board member of Composites Communications and Polymers, and the first young editorial board member of Engineering Science and Technology. He is also a member of the Standing Committee on Dielectric Polymer Composites and Applications of the Chinese Society of Composites, and a member of the Thermal Conductivity Committee and Nanocomposites Sub-committee of the Chinese Society of Composites. His industrialization achievements have been successfully applied to the antenna modules of Huawei Mate 60 series cell phones and other Huawei smart terminal products.