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A Novel Zirconium Modified Arylacetylene Resin: Preparation, Thermal Properties and Ceramifiable Mechanism

With the rapid development of thermal protection systems for the aerospace industry and power electronics, polyarylacetylene (PAA) resin plays an important role because of its good mechanical properties, high glass transition temperature (T(g)), low water absorption, high char yield (Y(c)), and the...

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Autores principales: Mei, Qilin, Wang, Honghua, Chen, Xiaocheng, Wang, Ying, Huang, Zhixiong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7182832/
https://www.ncbi.nlm.nih.gov/pubmed/32204398
http://dx.doi.org/10.3390/polym12030684
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author Mei, Qilin
Wang, Honghua
Chen, Xiaocheng
Wang, Ying
Huang, Zhixiong
author_facet Mei, Qilin
Wang, Honghua
Chen, Xiaocheng
Wang, Ying
Huang, Zhixiong
author_sort Mei, Qilin
collection PubMed
description With the rapid development of thermal protection systems for the aerospace industry and power electronics, polyarylacetylene (PAA) resin plays an important role because of its good mechanical properties, high glass transition temperature (T(g)), low water absorption, high char yield (Y(c)), and the fact that there is no byproduct released in the curing process. In order to further improve the thermal property of PAA based FRP for the thermal protection field, the introduction of a zirconium element into arylacetylene is promising. In this paper, zirconium modified arylacetylene (ZAA) resin was prepared by two-step synthesis. The FTIR analysis characterized its molecular structure and confirmed the products. The viscosity of ZAA was about 6.5 Pa·s when the temperature was above 120 °C. The DSC analysis showed that the ZAA had a low curing temperature, and its apparent activation energy was 103.86 kJ/mol in the Kissinger method and 106.46 kJ/mol in the Ozawa method. The dielectric constant at 1 MHz of poly(zirconium modified arylacetylene) (PZAA) was 3.4. The TG analysis showed that the temperatures of a weight loss of 5% (T(d5)) and char yield (Y(c)) at 800 °C of PZAA were 407.5 °C and 61.4%, respectively. The XRD results showed the presence of SiO(2) and ZrO(2) in the PZAA residue after ablation. The XRF results showed that the contents of SiO(2) and ZrO(2) in PZAA residual after ablation were, respectively, 15.3% and 12.4%. The SEM showed that the surface of PZAA after ablation had been covered with a dense and rigid ceramic phase composed of ZrO(2) and SiO(2). Therefore, the introduction of Zr into arylacetylene greatly improved the densification of the surface after ablation, and improved the heat resistant property.
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spelling pubmed-71828322020-05-01 A Novel Zirconium Modified Arylacetylene Resin: Preparation, Thermal Properties and Ceramifiable Mechanism Mei, Qilin Wang, Honghua Chen, Xiaocheng Wang, Ying Huang, Zhixiong Polymers (Basel) Article With the rapid development of thermal protection systems for the aerospace industry and power electronics, polyarylacetylene (PAA) resin plays an important role because of its good mechanical properties, high glass transition temperature (T(g)), low water absorption, high char yield (Y(c)), and the fact that there is no byproduct released in the curing process. In order to further improve the thermal property of PAA based FRP for the thermal protection field, the introduction of a zirconium element into arylacetylene is promising. In this paper, zirconium modified arylacetylene (ZAA) resin was prepared by two-step synthesis. The FTIR analysis characterized its molecular structure and confirmed the products. The viscosity of ZAA was about 6.5 Pa·s when the temperature was above 120 °C. The DSC analysis showed that the ZAA had a low curing temperature, and its apparent activation energy was 103.86 kJ/mol in the Kissinger method and 106.46 kJ/mol in the Ozawa method. The dielectric constant at 1 MHz of poly(zirconium modified arylacetylene) (PZAA) was 3.4. The TG analysis showed that the temperatures of a weight loss of 5% (T(d5)) and char yield (Y(c)) at 800 °C of PZAA were 407.5 °C and 61.4%, respectively. The XRD results showed the presence of SiO(2) and ZrO(2) in the PZAA residue after ablation. The XRF results showed that the contents of SiO(2) and ZrO(2) in PZAA residual after ablation were, respectively, 15.3% and 12.4%. The SEM showed that the surface of PZAA after ablation had been covered with a dense and rigid ceramic phase composed of ZrO(2) and SiO(2). Therefore, the introduction of Zr into arylacetylene greatly improved the densification of the surface after ablation, and improved the heat resistant property. MDPI 2020-03-19 /pmc/articles/PMC7182832/ /pubmed/32204398 http://dx.doi.org/10.3390/polym12030684 Text en © 2020 by 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mei, Qilin
Wang, Honghua
Chen, Xiaocheng
Wang, Ying
Huang, Zhixiong
A Novel Zirconium Modified Arylacetylene Resin: Preparation, Thermal Properties and Ceramifiable Mechanism
title A Novel Zirconium Modified Arylacetylene Resin: Preparation, Thermal Properties and Ceramifiable Mechanism
title_full A Novel Zirconium Modified Arylacetylene Resin: Preparation, Thermal Properties and Ceramifiable Mechanism
title_fullStr A Novel Zirconium Modified Arylacetylene Resin: Preparation, Thermal Properties and Ceramifiable Mechanism
title_full_unstemmed A Novel Zirconium Modified Arylacetylene Resin: Preparation, Thermal Properties and Ceramifiable Mechanism
title_short A Novel Zirconium Modified Arylacetylene Resin: Preparation, Thermal Properties and Ceramifiable Mechanism
title_sort novel zirconium modified arylacetylene resin: preparation, thermal properties and ceramifiable mechanism
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7182832/
https://www.ncbi.nlm.nih.gov/pubmed/32204398
http://dx.doi.org/10.3390/polym12030684
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