Article
Materials Science, Multidisciplinary
Meiqi Ling, Kaifeng Yu, Jian Wang, Zhipeng Wang, Guangyuan Zhou
Summary: With the rapid development of 5G technology, low dielectric constant materials have a wide range of applications in microelectronic devices. In this study, a novel poly(aryl ether ketone) resin with low dielectric constant and good thermal stability, mechanical properties, and insulation properties was successfully synthesized.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Polymer Science
Jingwei Jiang, Zhichao Wang, Yunlong Sun, Zengxu Qian, Zengwen Cao, Zhipeng Wang, Guangyuan Zhou
Summary: This study successfully synthesized novel polymer materials with low dielectric constant, good thermal resistance, and mechanical properties, and elucidated the relationship between dielectric constant and the number of methylene groups by constructing a model. The obtained polymer material has significant application value in the field of high-frequency communications.
Article
Polymer Science
Hongjian Gu, Cheng Liu, Qian Liu, Yu Zhang, Meng Wang, Xi Chen, Yousi Chen, Jinyan Wang, Xigao Jian
Summary: A series of poly(bisphthalazinone ether sulfone ketone)s with pendant phenyl groups (POPESKs) were synthesized and their thermal degradation mechanism was investigated. The POPESKs showed good solubility in various organic solvents and exhibited excellent film-forming property. The polymer films had high transparency and water contact angles in the range of 82.3-94.3 degrees. The overall performance of POPESKs indicated great potential in aerospace, petrochemical, and energy applications.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Polymer Science
Linlin Wang, Zhipeng Wang, Minjie Qu, Guangyuan Zhou
Summary: In this study, a novel fluorinated poly(aryl ether) (FPAE) was prepared using S(N)2 nucleophilic polycondensation. FPAE showed favorable dielectric properties, thermal stability, solubility, mechanical properties, and hydrophobicity. These characteristics make FPAE a promising candidate for low-dielectric materials in microelectronics and communication technology.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Polymer Science
Qian Liu, Shouhai Zhang, Zhaoqi Wang, Nan Li, Yuning Chen, Peiqi Xu, Xigao Jian
Summary: High molecular weight poly(aryl ether ketone ketone)s with diphenyl-biphthalazin-dione moieties were synthesized through solution condensation. The addition of mixed diphenyl-biphthalazin-dione monomer affected the performance of the polymers, particularly through the introduction of side phenyl groups for solubility and controllable contact angle. The resulting polymers exhibited excellent thermal stability, solubility in specific solvents, and mechanical properties.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Polymer Science
Qian Liu, Shouhai Zhang, Lin Zhuo, Peiqi Xu, Fanchen Sun, Jie Zhang, Xigao Jian
Summary: Poly(aryl ether ketone)s containing bis-phthalazinone units (PBPEK-Ps) with improved solubility and thermal resistance were synthesized by one-pot condensation polymerization. The effect of solvents on the copolymerization behavior of PBPEK-Ps was investigated. The structure characteristics of the polymers were identified through infrared absorption spectrum and nuclear magnetic resonance spectra. PBPEK-Ps showed favorable thermo-stability, with glass transition temperatures ranging from 256 to 305 degrees C. They also exhibited storage modulus preservation of over 58% at 250 degrees C, a tensile strength of 111 MPa, and excellent solubility in chloroform and N-methylpyrrolidone. PBPEK-Ps also demonstrated favorable insulation performance.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Polymer Science
Huijuan Li, Miao Yi, Xin Yin, Wenliang Wu, Shiai Xu
Summary: The objective of this study is to prepare a new poly(aryl ether ketone) (PAEK) with low dielectric constant, high transparency and heat resistance by introducing fluorine atoms and phenolphthalein (PHPH) groups into the polymer backbone. The chemical structure, molecular weight and solubility of PAEK random copolymers were characterized by various analytical techniques. Transparent and flexible films were prepared from DMAc solvent, exhibiting high glass transition temperature, thermal stability, mechanical strength and excellent optical properties.
EXPRESS POLYMER LETTERS
(2023)
Article
Materials Science, Composites
Lan Jin, Jie Liu, Lixue Zhu, Jiale Ding, Yunhe Zhang, Zhenhua Jiang
Summary: By synthesizing a crosslinkable poly (aryl ether ketone) matrix and functionalizing boron nitride nanosheets, a novel nanocomposite with stable chemical bonding structure at interfaces via Diels-Alder reaction was obtained. The nanocomposites exhibit high breakdown strength, excellent dielectric stability at high temperature, significantly improved discharged energy density, and high charge-discharge efficiency. This work demonstrates that constructing crosslinked nanocomposites may be a viable way to fabricate high temperature dielectrics.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Polymer Science
Lishi Jiang, Xiaoyu Li, Junyu Dai, Niu Zefeng, Sha Gou, Ling Gu, Shajie Luo
Summary: One-step polymerization method was used to improve the thermal property of semi-aromatic poly(ether ether amide) (PEEA). The obtained copolymers had high glass transition temperatures and good thermal stability. They were also soluble in certain solvents and had good optical transmittance, making them potential candidates for heat-resistance optical films.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
Ziyue Zhao, Jindong Zhang, Ran Bi, Chunhai Chen, Jianan Yao, Gang Liu
Summary: This study used PAEK resin with a low melting temperature to prepare laminate for CCF-PAEK composites, followed by injection of high melting temperature PEEK or SCF-PEEK for overmolding. The interface properties of the composites were affected by the interface temperature, which was adjusted by mold temperature. Higher interface temperatures resulted in better interfacial bonding between PAEK and PEEK. The melting temperature did not significantly affect the shear strength of SCF-PEEK/CCF-PAEK short beams.
Article
Polymer Science
Zhaoyang Wang, Bo Jiang, Yunhe Zhang, Xuefeng Li, Yongpeng Wang, Yingshuang Shang, Haibo Zhang
Summary: In this study, a series of cross-linked fluorinated poly(aryl ether)s films were prepared and their thermal, mechanical, and dielectric properties were compared. The polymeric films showed remarkable dielectric properties with a low dielectric constant and dissipation factor. These films also demonstrated excellent mechanical properties and performed well at high frequencies. The results suggest that these polymeric films have great potential for applications in high-speed communication.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Polymer Science
Feng Bao, Yanxing Liu, Ludi Shi, Jinze Cui, Muwei Ji, Huichao Liu, Jiali Yu, Caizhen Zhu, Jian Xu
Summary: This study synthesized a series of poly (aryl ether ketone) resins containing cyclohexyl and diphenyl fluorene, which exhibit low dielectric constant, high thermal resistance, and solubility. The addition of cyclohexyl reduces the molecular polarization, resulting in low permittivity and high transmittance. Moreover, the resin possesses excellent solubility and thermal properties, making it a promising candidate for high-frequency communication and large-scale integrated circuits.
Article
Polymer Science
Yang Yang, Bo Jiang, Yingshuang Shang, Qinfei Xu, Junjie He, Xuefeng Li, Haibo Zhang
Summary: This study synthesized fluorene-based poly(aryl ether ketone) (aPAEK) to improve the interlayer adhesion of poly (ether ether ketone) (PEEK) parts, with the tensile strength of 30 mol% fluorene-based aPAEK increased to 75 MPa and the interlayer strength of 20 wt% blends increased by 315% compared to PEEK. The selection of an appropriate molecular weight for aPAEK is crucial in maintaining the elevated tensile strength while promoting interlayer diffusion during the printing process.
Article
Electrochemistry
Jiaqi Xu, Zongcai Deng, Bo Wu, Meijin Lin, Dongyang Chen
Summary: Organic polymers with redox-active moieties have gained attention as sustainable, flexible, environmentally benign, and highly stable electrode materials for high-performance rechargeable batteries. By synthesizing viologen functionalized fluorene-containing poly(arylene ether ketone)s (MV-FPAEKs) and using MV-FPAEK-96 with a DF of 96% as the active material for the polymer cathode, it was found that the stability in the electrolyte can be increased while maintaining rechargeability.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Zhang Bengui, Zhirong Yang, Minghui Zhao, Qian Liu, Xueting Zhang, Yanshi Fu, Enlei Zhang, Kangjun Wang, Guosheng Wang, Zhigang Zhang, Shouhai Zhang
Summary: The development of high-power-density Vanadium flow batteries (VFBs) faces the challenge of lacking high-performance membranes. In this study, a novel PyPEF membrane was introduced for VFBs, which exhibited low swelling, high selectivity, high conductivity, and robust mechanical strength. The VFB with PyPEF-90 membrane delivered excellent battery performance and maintained stable performance even under high current density.
JOURNAL OF POWER SOURCES
(2022)