Article
Materials Science, Multidisciplinary
Rogerio R. de Sousa Jr, Joana B. Sacramento, Laura C. E. da Silva, Daniela Becker, Suel E. Vidotti, Danilo J. Carastan
Summary: This study aims to improve the strength and elongation of polystyrene-b-poly(ethylene-butylene)-b-polystyrene (SEBS) block copolymer gels by partially substituting mineral oil with a hydrogenated hydrocarbon resin. The addition of the resin significantly increased the tensile strength and elongation at break of the gels, without a significant increase in the elastic modulus. These gels show promise for electroactive applications, exhibiting remarkable mechanical response and large actuation strains under relatively low electric fields.
ACS APPLIED POLYMER MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
R. Li, X. Yang, J. Li, Y. Shen, L. Zhang, R. Lu, C. Wang, X. Zheng, H. Chen, T. Zhang
Summary: This review discusses in detail how to balance the thermal conductivity and dielectric properties in polymer composites. The recent progress of thermally conductive fillers is summarized, and the challenges and outlooks of polymers with high thermal conductivity and low dielectric properties are outlined.
MATERIALS TODAY PHYSICS
(2022)
Article
Agricultural Engineering
Asma Khouaja, Ahmed Koubaa, Hachmi Ben Daly
Summary: The project aims to develop new biocomposites using cellulose fibers to produce dielectric materials based on thermoplastic matrices. The addition of cellulose fibers increased the dielectric constant, the loss factor, and the conductivity of the materials compared to the neat polymer. Additionally, the volume resistivity of all the composites studied decreased with frequency and fiber content.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Chemistry, Multidisciplinary
Jiale Mao, Siyuan Feng, Shuang Wang, Wenjie Ma, Yonghong Cheng, Yu Chen
Summary: In this study, the researchers aimed to enhance the efficiency of epoxy materials as potential energy storage media by gradually replacing the benzene ring delocalization structure with cyclohexane structures. The results showed that partially reducing the unsaturation of the curing agent led to excellent high-temperature energy storage density and efficiency.
Article
Materials Science, Characterization & Testing
Eyob Wondu, Zelalem Chernet Lule, Jooheon Kim
Summary: This study aims to fabricate a composite material with a high dielectric constant and suitable thermal conductivity, consisting of thermoplastic polyurethane (TPU) and carbon nanotube (CNT)-covered strontium titanate (SrTiO3). The results showed that the dielectric constants of the composites with 40% CNT-covered SrTiO3 were three times higher than the pure TPU matrix. The thermal conductivity was significantly improved by 9 times compared with the pure TPU, while the tensile strength and thermal stability were minimally affected.
Article
Materials Science, Composites
Xiangyan Yu, Muhammad Rehan Bhatti, Xintong Ren, Pietro Steiner, Federico Di Sacco, Ming Dong, Han Zhang, Dimitrios Papageorgiou, Giuseppe Portale, Coskun Kocabas, Cees W. M. Bastiaansen, Mike Reece, Haixue Yan, Emiliano Bilotti
Summary: Solid-state drawing of ultra-high molecular weight polyethylene (UHMWPE) films doped with nanodiamonds (NDs) improves thermal conductivity and reduces dielectric loss in polymer dielectrics.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Review
Energy & Fuels
Shengjun Peng, Xianfeng Du, Zhongshuai Liang, Mingbo Ma, Yuan Guo, Lilong Xiong
Summary: Polymer film capacitors are important components for high-power applications, but their low energy density has made it difficult to meet the requirements of energy system miniaturization. Various strategies to improve the energy density of polymer dielectrics have been investigated, with particular interest in the construction of multilayer-structure composites. However, comprehensive and systematic reviews on the design principles and potential regulation mechanisms of multilayer interfaces are still lacking. This review summarizes recent progress in polymer-based multilayer-structure composite dielectrics, focusing on multilayer interface engineering and discussing various factors that affect their performance.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Multidisciplinary Sciences
Jie Chen, Yao Zhou, Xingyi Huang, Chunyang Yu, Donglin Han, Ao Wang, Yingke Zhu, Kunming Shi, Qi Kang, Pengli Li, Pingkai Jiang, Xiaoshi Qian, Hua Bao, Shengtao Li, Guangning Wu, Xinyuan Zhu, Qing Wang
Summary: This study introduces a class of ladderphane copolymers that exhibit low electrical conductivity and high thermal conductivity at elevated temperatures. These copolymers have significantly lower electrical conductivity than existing polymers at high electric fields and elevated temperatures, resulting in a higher discharged energy density and charge-discharge efficiency. The ladderphane copolymers also self-assemble into highly ordered arrays and possess excellent cyclic stability at elevated temperatures and high electric fields.
Article
Materials Science, Composites
Lu Jing, Weili Li, Chang Gao, Menglu Li, Weidong Fei
Summary: A new method of preparing nanofiber fillers was proposed and nanocomposites were fabricated with ultralow filling content. The increased entropy in lattices led to local polymorphic distortion and effectively increased the degree of structural disorder. The nanocomposites exhibited high breakdown strength and enhanced energy storage capability.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Qinlong Wang, Hao Wang, Caixia Zhang, Qilong Zhang, Hui Yang
Summary: By preparing the core-shell structure of Sr2CeO4@SiO2 using the sol-gel method and introducing modified powders into a COC matrix, the stability and moisture resistance of the materials are significantly improved, showing potential application prospects in high-frequency communication equipment.
Article
Chemistry, Physical
Lvye Dou, Bingbing Yang, Shun Lan, Yiqian Liu, Yiqun Liu, Ce-Wen Nan, Yuan-Hua Lin
Summary: There is a high demand for polymer composite dielectrics capable of high energy density, high efficiency, and high-temperature stability in electronic vehicles and power systems. However, a major challenge is the design of high-performance nanofillers that can improve both polarization and breakdown strength. In this study, high-entropy-induced ceramic nanofibers are developed as effective nanofillers to enhance the energy storage performance of polyetherimide (PEI) composites. This research provides a guideline for developing dielectric fillers with tunable properties and microstructures, promoting the development of high-performance polymer composites.
ADVANCED ENERGY MATERIALS
(2023)
Article
Materials Science, Characterization & Testing
Eyob Wondu, Zelalem Chernet Lule, Jooheon Kim
Summary: This study focuses on the fabrication of thermoplastic polyurethane (TPU) composites with high thermal conductivity and dielectric constants, which can be used in electronic devices that are able to store charge and dissipate heat. The composites showed promising characteristics in terms of charge storage, heat dissipation, and mechanical properties. The thermal conductivity of the composite was significantly higher and the dielectric property was better compared to other investigated composites.
Article
Materials Science, Composites
Shuo Meng, Tong Zhao, Xiaosong Wang, Xiaolong Wang, Yuantao Zhang
Summary: In this study, PVDF was modified by doping highly conductive two-dimensional transition metal carbide (MXene) to prepare PVDF/MXene composite dielectrics, and the improvement in the dielectric properties, thermal conductivity, and mechanical properties of the PVDF matrix was investigated.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Physical
Zhiqiang Wu, Yiwen Peng, Ying Song, Haoyu Liang, Lei Gong, Zhenguo Liu, Qiuyu Zhang, Yanhui Chen
Summary: A series of cross-linked polyimide films with outstanding dielectric properties and high temperature energy storage property were prepared by introducing the end-capping agent, norbornene dioic anhydride. The cross-linked structure greatly reduces the dielectric loss and improves the electrical insulation properties of the films. The films exhibit a maximum energy storage density of 9.4 J/cm3 and maintain high energy storage density and efficiency at elevated temperatures.
MATERIALS TODAY ENERGY
(2023)
Article
Materials Science, Multidisciplinary
Yi-Fan Chen, Yan-Tao Zheng, Feng-Yuan Zhang, Zhi-Gang Liu, Ling-Yu Zhang, Lu Yang, Xin-Di Sun, Yuan Deng, Yao Wang
Summary: This study focuses on the fabrication of polyetherimide (PEI) films filled with highly insulating Al2O3 (AO) nanoparticles for high-temperature high-power capacitor applications. The results show that the composite films exhibit high discharged energy density and efficiency, as well as good stability and capacitance performance at elevated temperatures. Molecular dynamic simulations reveal the microscopic mechanism of polymer relaxation in the composite material at high temperatures.
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
Engineering, Manufacturing
Zhijuan Zhang, Li Yuan, Qingbao Guan, Guozheng Liang, Aijuan Gu
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2017)
Article
Polymer Science
Tetsu Sato, Mariko Takahashi, Takeshi Saito, Masahito Toyonaga, Itsuo Tanuma, Rie Yamada, Satoru Hosoda
Summary: An automatic evaluation system for photooxidation has been developed and successfully applied to assess the photo-OIT of LDPE samples containing photooxidation stabilizers. The system allows independent setting of various measurement conditions and provides detailed information on the photooxidation process.
POLYMER DEGRADATION AND STABILITY
(2024)
Article
Polymer Science
Zongzheng Zuo, Shuxue Zhou
Summary: In this study, three fluoroalkyl trimethoxysilane (FATMS) additives with different chain lengths were incorporated into a two-component polyurethane clearcoat to improve its hydrophobic durability. The coatings modified with FATMS maintained their surface hydrophobicity under various conditions, but quickly lost it when exposed to both UV irradiation and/or high temperature with water. The results suggest that the FATMS route is more suitable for indoor applications at room temperature.
POLYMER DEGRADATION AND STABILITY
(2024)
Article
Polymer Science
Song Li, Feng Zhao, Xueya Wang, Zhihua Liu, Jingze Guo, Yutong Li, Shuangmei Tan, Zhenxiang Xin, Shuai Zhao, Lin Li
Summary: Green flame retardants have garnered attention for their environmental friendliness, but current options fall short in achieving high flame retardancy for flammable polymers and maintaining environmental protection. This study takes a two-pronged approach to address flame retardants and the flame-retardant process. An eco-friendly bio-based synergistic flame retardant (PAU), synthesized using phytic acid (PA) and urea (U), is used to create a flame retardant coating that can be directly applied to any surface shape using polydopamine as an adhesive. The resulting EPS-PAU exhibits excellent flame retardancy, smoke suppression, and light weight while only slightly increasing the density.
POLYMER DEGRADATION AND STABILITY
(2024)
