High-temperature resistant polyborosilazanes with tailored structures

Boron-containing organosilicon polymers are widely used under harsh environments as preceramic polymers for advanced ceramics fabrication. However, harmful chemicals released during synthesis and the complex synthesis routes have limited their applications. To solve the problems, a two-component rou...

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Main Authors: Wang, Bijie, Chen, Ke, Li, Tianhao, Sun, Xun, Liu, Ming, Yang, Lingwei, Hu, Matthew Xiao, Xu, Jian, He, Liu, Huang, Qing, Jiang, Linbin, Song, Yujie
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2021
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Online Access:https://hdl.handle.net/10356/146855
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1468552023-07-14T15:49:20Z High-temperature resistant polyborosilazanes with tailored structures Wang, Bijie Chen, Ke Li, Tianhao Sun, Xun Liu, Ming Yang, Lingwei Hu, Matthew Xiao Xu, Jian He, Liu Huang, Qing Jiang, Linbin Song, Yujie School of Materials Science and Engineering Engineering::Materials Polyborosilazane Boron-containing Polymer Boron-containing organosilicon polymers are widely used under harsh environments as preceramic polymers for advanced ceramics fabrication. However, harmful chemicals released during synthesis and the complex synthesis routes have limited their applications. To solve the problems, a two-component route was adopted to synthesize cross-linked boron-containing silicone polymer (CPBCS) via a solventless process. The boron content and CPBCSs' polymeric structures could be readily tuned through controlling the ratio of multifunctional boron hybrid silazane monomers (BSZ12) and poly[imino(methylsilylene)]. The CPBCSs showed high thermal stability and good mechanical properties. The CPBCS with Si-H/C=C ratio of 10:1 showed 75 wt% char yields at 1000 °C in argon, and the heat release capacity (HRC) and total heat release (THR) are determined to be 37.9 J/g K and 6.2 KJ/g, demonstrating high thermal stability and flame retardancy. The reduced modulus and hardness of CPBCS are 0.30 GPa and 2.32 GPa, respectively. The novel polysilazanes can be potentially used under harsh environments, such as high temperatures or fire hazards. Published version 2021-03-12T03:10:44Z 2021-03-12T03:10:44Z 2021 Journal Article Wang, B., Chen, K., Li, T., Sun, X., Liu, M., Yang, L., Hu, M. X., Xu, J., He, L., Huang, Q., Jiang, L. & Song, Y. (2021). High-temperature resistant polyborosilazanes with tailored structures. Polymers, 13(3). https://dx.doi.org/10.3390/polym13030467 2073-4360 https://hdl.handle.net/10356/146855 10.3390/polym13030467 33535636 2-s2.0-85100488867 3 13 en Polymers © 2021 The Authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Materials
Polyborosilazane
Boron-containing Polymer
spellingShingle Engineering::Materials
Polyborosilazane
Boron-containing Polymer
Wang, Bijie
Chen, Ke
Li, Tianhao
Sun, Xun
Liu, Ming
Yang, Lingwei
Hu, Matthew Xiao
Xu, Jian
He, Liu
Huang, Qing
Jiang, Linbin
Song, Yujie
High-temperature resistant polyborosilazanes with tailored structures
description Boron-containing organosilicon polymers are widely used under harsh environments as preceramic polymers for advanced ceramics fabrication. However, harmful chemicals released during synthesis and the complex synthesis routes have limited their applications. To solve the problems, a two-component route was adopted to synthesize cross-linked boron-containing silicone polymer (CPBCS) via a solventless process. The boron content and CPBCSs' polymeric structures could be readily tuned through controlling the ratio of multifunctional boron hybrid silazane monomers (BSZ12) and poly[imino(methylsilylene)]. The CPBCSs showed high thermal stability and good mechanical properties. The CPBCS with Si-H/C=C ratio of 10:1 showed 75 wt% char yields at 1000 °C in argon, and the heat release capacity (HRC) and total heat release (THR) are determined to be 37.9 J/g K and 6.2 KJ/g, demonstrating high thermal stability and flame retardancy. The reduced modulus and hardness of CPBCS are 0.30 GPa and 2.32 GPa, respectively. The novel polysilazanes can be potentially used under harsh environments, such as high temperatures or fire hazards.
author2 School of Materials Science and Engineering
author_facet School of Materials Science and Engineering
Wang, Bijie
Chen, Ke
Li, Tianhao
Sun, Xun
Liu, Ming
Yang, Lingwei
Hu, Matthew Xiao
Xu, Jian
He, Liu
Huang, Qing
Jiang, Linbin
Song, Yujie
format Article
author Wang, Bijie
Chen, Ke
Li, Tianhao
Sun, Xun
Liu, Ming
Yang, Lingwei
Hu, Matthew Xiao
Xu, Jian
He, Liu
Huang, Qing
Jiang, Linbin
Song, Yujie
author_sort Wang, Bijie
title High-temperature resistant polyborosilazanes with tailored structures
title_short High-temperature resistant polyborosilazanes with tailored structures
title_full High-temperature resistant polyborosilazanes with tailored structures
title_fullStr High-temperature resistant polyborosilazanes with tailored structures
title_full_unstemmed High-temperature resistant polyborosilazanes with tailored structures
title_sort high-temperature resistant polyborosilazanes with tailored structures
publishDate 2021
url https://hdl.handle.net/10356/146855
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