DataVXACS Applied Polymer MaterialsPaper
journal article·2023-03-10

UV-Curable Polyborosilazane Precursors for SiBCN Coatings under Harsh Environments

Yangzhong Zhao, Tianhao Li, Yanpei Dang, Erxiao Wu, Jiaqi Sun, Xiao Zhang, Shiyu Du, Xiaoling Liu, Xiaosu Yi, Ping Cui, Yujie Song, Liu He

ACS Applied Polymer Materials· Volume 5· Issue 3
Publisher page
Source abstract

Abstract

UV irradiation is a well-established and effective process for polymer curing. However, it has been largely ignored in the field of polymer-derived ceramics (PDCs) due to its intricate mechanism and strict requirements for the precursor molecular structure. The current work designs and synthesizes a series of UV-curable polyborosilazanes containing various vinyl groups, simultaneously examines the effect of UV curing, and investigates the mechanism of curing. Cyclization mechanisms involving vinyl-free radicals and silyl-free radicals are postulated based on the molecular structure of the precursor before and after curing. The ceramic yield of UV-cured precursors is increased by up to 9.0 wt %. Moreover, SiBCN ceramics, pyrolyzed from UV-cured precursors, exhibit excellent thermal stability and remain amorphous at temperatures of up to 1600 °C. The mechanistic interpretation of UV curing opens horizons for the design and application of UV-curable ceramic precursors.
Source: openalex_inverted_index · Quality: baseline

Research context

PolymersCeramics & glasses

OpenAlex topics: Advanced ceramic materials synthesis · Silicone and Siloxane Chemistry · Photopolymerization techniques and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, People’s Republic of China

Qianwan Institute of CNITECH, Ningbo 315336, People’s Republic of China

Department of Mechanical Materials and Manufacturing, The University of Nottingham, Ningbo 315100, People’s Republic of China

Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR 999077, People’s Republic of China

Funding

Ministry of Science and Technology of the People's Republic of China · Science and Technology Department of Zhejiang Province · National Natural Science Foundation of China · Chinese Academy of Sciences · Ningbo 3315 Plan

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