Article
Chemistry, Physical
Xinhui Zheng, Jie Fei, Yuefeng Gu, Meng Li, Jianfeng Huang
Summary: This study successfully fabricated carbon fiber reinforced cyanate ester resin matrix composites with high tensile strength and thermal conductivity, achieved by the successful growth of nano-manganese dioxide and uniform graft of polyamide 6 on the surface of carbon fiber. The dynamic mechanical analysis of the composite shows higher elastic modulus and lower mechanical losses.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Materials Science, Composites
Xiaodan Li, Wei Huang, Yan Sui, Guanhui Wang, Lin Xiao, Dongxing Zhang
Summary: By adding different amounts of MA0735 into novolac cyanate ester resin, novolac cyanate ester-polyhedral oligomeric silsesquioxane (POSS, MA0735) copolymers were prepared and analyzed for their curing behaviors and properties. The polymer with 0.5% MA0735 showed optimal comprehensive properties, combining heat resistance and impact toughness.
COMPOSITES COMMUNICATIONS
(2021)
Article
Chemistry, Applied
Xiaodan Li, Xiaoqing Liu, Hongyu Liu, Rui He, Feng Wang, Shiyun Meng, Zhaomin Li
Summary: Epoxy-based silsesquioxane (EOVS) was oxidized from octavinyl silsesquioxane (OVS) and used to prepare E51/BADCy/EOVS nanocomposites with epoxy resin and cyanate ester. The addition of EOVS resulted in a lower dielectric constant due to increased free volume. The nanocavities introduced by POSS were confirmed to increase the free volume, and the crosslinking density was determined to understand the spatial structure of the nanocomposites. The E51/BADCy/EOVS nanocomposites exhibited a surprising decrease in dielectric constant and dielectric loss, making them promising candidates for the microelectronics industry.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Article
Chemistry, Applied
Qing Wen, Xiao-jun Yang, Ding-yong He, Han-guang Fu
Summary: Heat-resistant composites are widely used for high-temperature engineering materials, and polymer materials, such as silicone rubber, are commonly used as the matrix for these composites. Cyanate ester (CE) modified silicone rubber (SR) composites were prepared to improve the thermal stability of SR. The composites exhibited a two-phase microstructure with continuous SR and dispersed CE, resulting in higher heat resistance compared to pure SR and pure CE. Further enhancement of heat resistance was achieved by preparing a composite of KL and CE/SR.
JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Jiaxiong Li, Chao Ren, Zhijian Sun, Yanjuan Ren, Haksun Lee, Kyoung-sik Moon, Ching-Ping Wong
Summary: The newly developed NCE/EP copolymers exhibit superior high-temperature stability and are suitable for high-power electronic packaging materials, showing outstanding performance.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Jun Jiang, Changping Yin, Suli Xing, Nan Wu, Fahao Zhang, Jun Tang
Summary: In this study, a nonmetallic catalyst, 4-(4-aminophenoxy) phthalonitrile (PN-NH2), was used to reduce the curing temperature and time of cyanate ester (CE) resin. The addition of PN-NH2 significantly decreased the characteristic curing temperatures and activation energy of the CE resin. The cured resins with PN-NH2 showed superior mechanical and dielectric properties while maintaining reduced curing temperatures.
ACS APPLIED POLYMER MATERIALS
(2023)
Review
Polymer Science
Shailja Goyal, Eric W. Cochran
Summary: The development of polymeric materials that can withstand extreme environments, driven by space exploration and high-speed civil transport, has led to the use of cyanate ester (CE) as a thermoset matrix in aerospace and defense applications. CE exhibits high glass transition temperature, low moisture absorption, and low coefficient of thermal expansion, making it extremely thermally stable. This review examines various inorganic additives, such as silica, clay, boron, and phosphorus, reported in the literature to enhance the thermal properties of CE. The mechanisms for improving thermal stability in CE-inorganic hybrids are also discussed.
POLYMER INTERNATIONAL
(2022)
Article
Chemistry, Applied
Xinhao Cen, Zhilin Cao, Zhengzhou Wang
Summary: In this research, a novel multifunctional flame retardant (DSF) was prepared and applied in EPCE composites, and its mechanical performance, dielectric properties, thermal behavior, and flame retardancy were comprehensively investigated. The EPCE/8DSF composite exhibited excellent flame retardancy, thermal stability, and improved dielectric properties at 10 MHz.
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Yang-Chin Kao, Wei-Cheng Chen, Ahmed F. M. EL-Mahdy, Meei-Yu Hsu, Chih-Hao Lin, Shiao-Wei Kuo
Summary: In this study, a difunctionalized cyanate ester double-decker silsesquioxane (DDSQ-OCN) cage was prepared to improve the thermal behavior of epoxy resin. The covalently bonded network structure formed by the copolymerization of epoxy and OCN units, as well as the hydrogen bonding between the OH groups of epoxy and the SiOSi moieties of DDSQ units, enhanced the physical properties of the material. The addition of Cu(II)-acac accelerated the thermal polymerization process but decreased the thermal stability.
Article
Engineering, Environmental
Rui Liu, Hongxia Yan, Yuanbo Zhang, Kaiming Yang, Shang Du
Summary: This article introduces a BADCy resin containing hyperbranched polysiloxane, which has advantages of lower curing temperature, increased toughness, and lower dielectric constant and dielectric loss tangent values. It shows promising potential applications in electronic packaging.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Multidisciplinary
Wenxing Jiang, Xianhong Zhang, Dong Chen, Yuhong Ma, Wantai Yang
Summary: A novel modification strategy utilizing BMI-HPPs was developed to reduce the dielectric constant and enhance the toughness of CE resins, showing great potential in the fields of microelectronics and aerospace. The modified CE resins exhibited significantly improved properties, including lower ε values, enhanced wave transmission, and increased impact strength compared to pristine CE resins.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Jianwei Li, Jun Lin, Yugen Wang, Wei Chu, Fei Liu, Bin Wang
Summary: In this work, cross-linked and rigid polyimide (PI) composite foams with low density, high mechanical strength, thermal stability, fire resistance, ultralow dielectric characteristics, and excellent wave transparency were successfully fabricated, making them attractive candidates for applications in the aviation and aerospace fields.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Dequn Peng, Ziwen Han
Summary: Electron irradiation in outer space causes severe damage to polymeric materials used in spacecraft. To improve the irradiation resistance of cyanate ester (CE), polyhedral oligomeric silsesquioxane (POSS) was added to the resin to fabricate a nanocomposite. Electron irradiation induces two reactions in the cyanate ester resin.
Article
Polymer Science
Olga Grigoryeva, Alexander Fainleib, Olga Starostenko, Kristina Gusakova, Viktor Sakhno, Andrey Borzakovskiy, Tetyana Kovalinska, Boulous Youssef, Fabrice Gouanve, Eliane Espuche, Daniel Grande
Summary: Thermally stable nanoporous polymer films were created by combining thermosetting CERs and LPU, followed by alpha-particle irradiation and chemical etching. The resulting films showed well-defined nanoporous structures, high thermal characteristics, and effective gas transport properties. The materials have potential applications as ultrafiltration membranes in advanced technologies, especially under extreme conditions.
Article
Polymer Science
Chi-Ping Li, Chih-Min Chuang
Summary: The study compared the thermal and dielectric properties of rigid-rod bifunctional epoxy resin and commercial epoxy resin, finding that the rigid-rod structure exhibited better performance with higher 5% weight loss temperature and smaller thermal expansion coefficient than the flexible structure. Additionally, the rigid-rod system demonstrated higher Tg and better dielectric properties when enough curing agent was provided.
Article
Polymer Science
Sheng Sun, Longhui Zheng, Li Yuan, Qingbao Guan, Guozheng Liang, Aijuan Gu
JOURNAL OF APPLIED POLYMER SCIENCE
(2017)
Article
Polymer Science
Meiying Ge, Jia-Tao Miao, Li Yuan, Qingbao Guan, Guozheng Liang, Aijuan Gu
JOURNAL OF APPLIED POLYMER SCIENCE
(2018)
Article
Materials Science, Composites
Quan Zhang, Qingbao Guan, Li Yuan, Aijuan Gu, Guozheng Liang
POLYMER COMPOSITES
(2018)
Article
Chemistry, Physical
Xuelin Fan, Jia-Tao Miao, Li Yuan, Qingbao Guan, Aijuan Gu, Guozheng Liang
APPLIED SURFACE SCIENCE
(2018)
Article
Chemistry, Physical
Qingbao Guan, Li Yuan, Yi Zhang, Aijuan Gu, Guozheng Liang
APPLIED SURFACE SCIENCE
(2018)
Article
Chemistry, Physical
Longhui Zheng, Li Yuan, Qingbao Guan, Guozheng Liang, Aijuan Gu
APPLIED SURFACE SCIENCE
(2018)
Article
Engineering, Multidisciplinary
Xianchao Han, Li Yuan, Aijuan Gu, Guozheng Liang
COMPOSITES PART B-ENGINEERING
(2018)
Article
Chemistry, Physical
Chunqing Lu, Li Yuan, Qingbao Guan, Guozheng Liang, Aijuan Gu
JOURNAL OF PHYSICAL CHEMISTRY C
(2018)
Article
Polymer Science
Zhongming Yuan, Hiroko Yamamoto, Shinji Kanehashi, Takeshi Shimomura
Summary: This study reports the synthesis of a flexible light-emitting polymer film using a solution blending method. The selective positioning of MEH-PPV molecules in the PS phase of the film was confirmed. The film exhibited a nanometer-scale luminescent domain with low aggregation quenching and showed good elastomeric characteristics.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2024)