Article
Polymer Science
Jing Jiang, Xueyu Yuan, Xi He, Shengjie Guan, Qian Wu, Ming Liu, Li Liu, Yudong Huang
Summary: This study reports a strategy to enhance the thermal resistance of silicone resins by introducing zirconium into the main chain. The molecular simulation shows that the introduction of zirconium atoms leads to the formation of high energy zirconium-oxygen bonds, increasing the cross-linking degree and suppressing the formation of cyclic oligomers. The results suggest that this work could provide a systemic experimental and theoretical foundation for thermal properties enhancement through metal atoms incorporation.
Article
Materials Science, Multidisciplinary
Hsing-Ying Tsai, Takehiro Fujita, Siqian Wang, Masanobu Naito
Summary: This study introduces an environmentally friendly recycling system for epoxy resin using glutathione, which enables the regeneration of new epoxy materials with approximately 90% of initial mechanical strength. It provides a new perspective on the decomposition and recycling of thermosetting networks under more environmentally friendly conditions.
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2021)
Article
Materials Science, Composites
Zhaoqi Niu, Beixi Chen, Shuai Shen, Haipeng Zhang, Xiaoyan Ma, Fang Chen, Luyang Li, Yi Xin, Chengshuang Zhang, Xiao Hou
Summary: By coordinating Zr4+ with Ph-O- in phenolic resin, Zr chelated hybrid phenolic resin (ZrPR) with enhanced thermal stability was obtained. ZrPR reduced the content of Ph-OH in phenolic resin and provided a metal-organic chelated point, resulting in improved ablation resistance. Carbon fiber reinforced ZrPR composites (CF/ZrPR) exhibited higher strength and lower thermal conductivity and ablation rate compared to unmodified composites (CF/PR).
COMPOSITES COMMUNICATIONS
(2022)
Article
Thermodynamics
Di Zhu, Zhixiong Huang, Minxian Shi, Yan Qin, Zhenyue Zou, Zongyi Deng
Summary: In this study, a model-free method was used to investigate the kinetic models of BPR and ZrSi2/B4C-Ph composite. The thermal stability, chemical reaction, and structure evolution of the composite during pyrolysis were examined using various analytical techniques. The results revealed that the pyrolysis of BPR occurs in three consecutive and overlapping stages, and the kinetic parameters of each stage were determined. The high char yield of ZrSi2/B4C-Ph composite is mainly due to the reaction between ZrSi2 and B4C with gases released during BPR pyrolysis, resulting in the formation of solid phases.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Polymer Science
Youpei Du, Yu Xia, Zhenhua Luo, Wenjie Yuan, Kongli Xu, Qian Wang, Heng Zhou, Ying Guo, Hao Li, Tong Zhao
Summary: In this study, a hybrid phenolic resin containing silicon and boron was synthesized through addition-condensation reactions, resulting in improved residual weight at high temperatures. The hybrid resin achieved uniform dispersion of hybrid elements at the molecular level and addition curing via the presence of vinyl groups. Characterization using multiple techniques provided a detailed understanding of the synergistic effects of boron-silicon modified phenolic resin.
POLYMER DEGRADATION AND STABILITY
(2021)
Article
Thermodynamics
Petru Budrugeac, Andrei Cucos, Radu Dascalu, Carmen Paraschiv, Sorina Mitrea, Beatrice-Gabriela Sbarcea
Summary: Various analyses were conducted to characterize an epoxy resin composite material, resulting in determination of activation energy and kinetic parameters. Experimental and calculated results showed good agreement, indicating potential for predicting thermal lifetime of the material.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Chemistry, Multidisciplinary
Jian-Jie Gao, Zhen-Jun Li, Bo Zhu, Li-Juan Wang, Jing Xu, Bo Wang, Xiao-Yan Fu, Hong-Juan Han, Wen-Hui Zhang, Yong-Dong Deng, Yu Wang, Zhi-Hao Zuo, Ri-He Peng, Yong-Sheng Tian, Quan-Hong Yao
Summary: This study presents a novel and eco-friendly approach using modified rice plants to efficiently degrade and remediate 2,4-dinitrotoluene (2,4-DNT) contaminated soil. The modified plants can completely degrade 2,4-DNT into harmless substances and quickly restore the contaminated soil. This innovative phytoremediation method has significant potential for reducing carbon emissions and promoting sustainable development.
Article
Polymer Science
Degang Wang, Jie Ding, Bing Wang, Yingluo Zhuang, Zhixiong Huang
Summary: A new POSS-Phenol was synthesized and its effects on the thermal degradation of phenolic resin were investigated. The study found that POSS modified phenolic resin exhibited better thermal stability at high temperatures.
Article
Nanoscience & Nanotechnology
Tao Zhang, Yanan Huang, Bo Niu, Yayun Zhang, Donghui Long
Summary: A new dual-competitive parallel-reaction kinetics model is proposed in this paper to describe the thermogravimetric lines of material pyrolysis processes. The model combines peak analysis, dual-competitive reaction form, and parallel reaction mechanism to accurately describe the pyrolysis of synthetic polymers and natural biomass. The model shows good agreement with experimental data and has low computational cost.
Article
Polymer Science
Han Li, Nasidan Wang, Xuefei Han, Haoran Yuan, Jiang Xie
Summary: The study investigates the thermal degradation mechanism and kinetics of carbon fiber epoxy resin used in aerostructures, analyzing the process under different environments and establishing a kinetic model. Results show differences in thermal degradation steps under inert atmosphere and air atmosphere, providing fundamental support for the application of carbon fiber epoxy resin in the aircraft industry.
Article
Chemistry, Multidisciplinary
Jindou Shi, Minqiang Wang, Hao Wang, Chen Zhang, Yongqiang Ji, Junnan Wang, Yun Zhou, Arshad Saleem Bhatti
Summary: The working stability of perovskite light-emitting diodes (LEDs) is a bottleneck in the commercialization process. This study proposes a strategy for dual-encapsulating perovskites using organic and inorganic materials, which significantly enhances the thermal stability and suppresses ion leakage.
Article
Chemistry, Multidisciplinary
Melisa Temiz, Suheyla Kocaman, Gulnare Ahmetli
Summary: This study aims to reduce the production cost of composite materials, obtain composite materials with improved properties, and expand the applications of waste rubber composites. The effect of EPDM: CB ratio and environmental conditions on the mechanical properties of hybrid composites was investigated.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Green & Sustainable Science & Technology
Shida Zuo, Yunyi Liang, Yingji Wu, Shengbo Ge, Jiangtao Shi, Xinxin Ma, Liping Cai, Jianzhang Li, Su Shiung Lam, Changlei Xia
Summary: This research aims to fabricate special plywood with ultra-high strength using environmentally friendly vacuum assisted resin transfer molding (VARTM) technology. The results showed that the special plywood had significantly higher flexural strength and modulus compared to traditional plywood, due to the reduced porosity achieved by VARTM technology.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Materials Science, Multidisciplinary
Faheem Muhammed, Laure Moretti, Tania Lavaggi, Christopher Lam, Tao Tao, Suresh Advani, John W. W. Gillespie Jr
Summary: The microstructural evolution of a T800 2 x 2 twill weave carbon fiber/benzoxazine resin composite was investigated through quantitative analysis of the pyrolytic decomposition region. Three stages of mass loss were identified using a non-isothermal kinetics model, and the corresponding decomposition gases were analyzed to gain insight into the pyrolytic reactions. A heat treatment cycle was designed based on the kinetics model to isolate each stage of the reaction. X-ray computed tomography was used to evaluate various microstructural features, including void size, the degree of open and closed porosity, and crack density.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Multidisciplinary Sciences
Ahmad Safwan Ismail, Mohammad Jawaid, Norul Hisham Hamid, Ridwan Yahaya, Siti Noorbaini Sarmin, Hassan Fouad, Mohini Sain
Summary: This study investigates the influence of flax fibre loading on the dynamic thermal and mechanical characteristics of composites. The results show that the incorporation of flax into the composites improves the dynamic mechanical properties but reduces thermal stability.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2023)
