Article
Materials Science, Composites
Bo Li, Xiaoqian Xu, Dengxun Ren, Zexu Fan, Mingzhen Xu
Summary: In this study, a BA-ph/BPA-PEN composite film was prepared by modifying BA-ph resin with BPA-PEN. The introduction of BPA-PEN facilitated the polymerization reaction of BA-ph resin and directly affected the polymerization reaction of the benzoxazine ring and the cross-linking reaction of the nitrile group. The increase in BPA-PEN content led to the appearance of a phase reversion structure, promoting the improvement of mechanical properties. The system exhibited good thermal performance, with a higher Td5 and char yield compared to the pure BA-ph system.
COMPOSITES COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Linsen Zuo, Chenjiang Wu, Lifen Tong, Xiaobo Liu
Summary: Aramid fiber (AF)-reinforced composite with polyarylene ether nitrile terminated with phthalonitrile (PEN-t-Ph) modification shows improved performance, with the molecular weight of PEN-t-Ph having a significant impact on mechanical properties and interface compatibility of the composite laminate. Adjusting the molecular weight of PEN-t-Ph resin can enhance the overall performance of the composite laminate, providing new possibilities for AF-reinforced materials.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Polymer Science
Xuhai Xiong, Donghui Liu, Rong Ren, Jing Wang
Summary: Four novel phthalonitrile-capped polyarylene ether nitrile oligomers with different molecular weights were synthesized by adjusting the ratio of bisphenol AF and 2,6-dichlorobenzonitrile. The molecular structure of the oligomers was analyzed, and their curing behaviors and kinetics were studied. The glass fiber cloth reinforced FPEN-Ph composites exhibited high flexural and shear strengths, as well as good interfacial adhesion. The FPEN-Ph resin shows potential for high-performance polymeric composites in high temperature environments.
HIGH PERFORMANCE POLYMERS
(2023)
Article
Chemistry, Physical
Tianrui Li, Guo Lin, Liang He, Yunqing Xia, Xiaoqian Xu, Yingfa Liu, Lifen Tong, Xiaobo Liu
Summary: In this paper, bisphenol A was introduced into the molecular chain by molecular design to improve the crystallization ability of PEN. Different structures of PEN copolymers were synthesized and studied for their crystallization ability, thermal and mechanical properties. The effects of hot-pressing conditions on the properties of hydroquinone/bisphenol A copolymerized PEN were investigated, and the best processing conditions were determined. This study provides guidance for the research of semi-crystalline PEN and offers a theoretical basis for its applications.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Polymer Science
Wanru Zhang, Liang He, Ting Wang, Xiaobo Liu, Lifen Tong
Summary: A series of PENs with different molecular weights were synthesized and their effect on the performance of PEN and PEN-based FCCL were studied. The PENs showed excellent thermal properties and long service life. The tensile properties of PENs increased with increasing molecular weight, while water absorption decreased. However, the peel strength of FCCL showed an opposite trend to the tensile properties of PEN, with PEN-2 showing the highest peel strength.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Liang He, Lifen Tong, Zhongxiang Bai, Guo Lin, Yunqing Xia, Xiaobo Liu
Summary: This passage introduces a special engineering plastic, polyarylene ether nitrile (PEN), which is suitable for use in harsh environments. By using a specific preparation method, the linear polymer is converted into a 3D network structure, resulting in enhanced performance.
Article
Polymer Science
Ying Zhu, Yumeng Luo, Xiran Tang, Lifen Tong, Xiaobo Liu
Summary: In this research, h-BN was added to PEN as a filler to improve its thermal conductivity and electrical insulation. The influence of filler content on properties was studied in depth. The results showed that the thermal conductivity of the composites increased to 0.5444 Wm(-1) K-1 at 30 wt% filler content, with a 22.89% increment compared to PEN copolymer without additive. The PEN/h-BN composite exhibited excellent thermal properties and improved dielectric constant and insulation performance. The tensile strength was 62.3 MPa and the elastic modulus was 3567.5 MPa. In conclusion, the 30 wt% h-BN/PEN composite prepared in this research has great potential and promising prospects in the field of electronics.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yumeng Luo, Lifen Tong, Ying Zhu, Xiaobo Liu
Summary: By preparing PEN/silicone powder/GO composite materials, this study successfully improved the performance of polymer dielectric materials, including increasing the dielectric constant and improving the molding fluidity and compatibility of the material. In addition, the composite material also showed improved thermal and mechanical properties, and it can be easily prepared, presenting great potential for applications.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Polymer Science
Liang He, Lifen Tong, Yunqing Xia, Guo Lin, Ting Wang, Wanru Zhang, Yingfa Liu, Xiaobo Liu
Summary: A novel polymer was prepared by combining phthalonitrile end-capped polyarylene ether nitrile (PEN-Ph) and bisphthalonitrile (BPh) using post-solid phase chemical reaction technology. The mechanical properties of the PEN-Ph/BPh composite materials were significantly improved by changing the pre-polymerization time of BPh. Furthermore, the composite films exhibited excellent thermal properties and dielectric stability, making them suitable for use in high-temperature electronic fields.
Article
Engineering, Environmental
Pan Wang, Mengxue Wang, Tao Song, Jiaqi Chen, Xidi Liu, Xiaoyang Liu, Yong You, Huijin Song, Kui Li, Ying Li, Wei Feng, Xulin Yang
Summary: A well-stabilized electrospinning nanofibrous membrane was successfully fabricated by combining high-performance engineering PEN with PDA and Ag NPs. The composite membrane showed comprehensive anti-corrode, anti-heat, and anti-bacterial performance, making it suitable for separating oil-water emulsions under harsh conditions.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Polymer Science
Liang He, Guo Lin, Xiaobo Liu, Lifen Tong
Summary: In this study, self-reinforced cross-linked polyarylene ether nitrile films were fabricated and their properties were finely tuned by controlling the crystallinity of PEN-OH. The CPEN films exhibited excellent performance and offered a new approach for designing high-performance polymeric dielectric materials.
Article
Materials Science, Multidisciplinary
Weihua Han, Feng Gao, Lingyun Zhou, Lu Wang, Xiufu Hua, Xinyu Xue, Zhiqiang Li, Wei Luo, Lingyun Pang, Renbo Wei
Summary: A flexible FMWCNT/PEN metacomposite with negative permittivity was fabricated using a delayed phase inversion method, showing promising applications in flexible electronics. The metacomposite demonstrates a continuous conductive network and plasma-type negative permittivity spectrum, along with outstanding flexibility and stable dielectric properties even after multiple folding cycles. This work presents an innovative technique to achieve metacomposites with regulable negative permittivity and excellent mechanical properties.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Polymer Science
Ren-Bo Wei, Chen-Hao Zhan, Yang Yang, Peng-Lin He, Xiao-Bo Liu
Summary: This study introduces a hybrid of polyarylene ether nitrile and titanium dioxide as a thermal resistant dielectric material for capacitors. The self-crosslinked TiO2-PEN hybrids demonstrate improved dielectric constants stable over a wide temperature range, showing potential for applications in harsh environments.
CHINESE JOURNAL OF POLYMER SCIENCE
(2021)
Article
Polymer Science
Tong Cao, Lingling Wang, Guo Lin, Yanjie An, Xiaobo Liu, Yumin Huang
Summary: In this study, a novel polymer material PEN was designed and synthesized, which showed ultralow dielectric constant and excellent mechanical properties due to the introduction of low polarizability trifluoromethyl group and porous structures.
Article
Chemistry, Multidisciplinary
Pan Wang, Xidi Liu, Yong You, Mengxue Wang, Yumin Huang, Ying Li, Kui Li, Yuxin Yang, Wei Feng, Qiancheng Liu, Jiaqi Chen, Xulin Yang
Summary: Polyarylene ether nitrile (PEN) nanofibers functionalized with stimuli-response polydiacetylene monomer (PCDA) were successfully fabricated, exhibiting excellent thermal stability and corrosion resistance. The compatibility between PCDA and PEN-PPL was better than that between PCDA and PEN-BPA, resulting in uniform color change with temperature rise. The composite membranes showed good dimensional stability under high temperature and corrosive conditions.
Article
Chemistry, Multidisciplinary
Lifen Tong, Yajie Wang, Yong You, Ling Tu, Renbo Wei, Xiaobo Liu
Article
Engineering, Electrical & Electronic
Yaqi Chen, Lifen Tong, Guo Lin, Weixi Zhang, Qinglin Zeng, Xiaobo Liu
Summary: Advanced carbon materials with tunable priority and composition, such as nitrogen self-doped porous carbon materials (NPCM), have shown promising potential as electrode materials for high-performance supercapacitors. The NPCM exhibited moderate specific surface area and nitrogen content, leading to a great specific capacitance attributed to appropriate pore structure and functional groups derived from heteroatom doping.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Polymer Science
Shuning Liu, Chenchen Liu, Zhongxiang Bai, Weixi Zhang, Lifen Tong, Xiaobo Liu
Summary: Polyarylene ether nitrile (PEN) based on biphenol exhibits high glass transition temperature, tensile strength, and low elongation at break. Improved PEN random copolymers with higher elongation at break and excellent mechanical, thermal, and dielectric properties have been synthesized, showing potential for high-temperature resistant applications in insulated cables.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Tiange Lan, Weixi Zhang, Yajie Wang, Shuning Liu, Chenchen Liu, Lifen Tong, Xiaobo Liu
Summary: h-BN-GO fillers have been designed using a simple ultrasonic blending method, leading to the creation of flexible dielectric films with high mechanical properties and thermal stability in various industries.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Chemistry, Multidisciplinary
Chen-Jiang Wu, Li-Fen Tong, Wei-Xi Zhang, Xiao-Bo Liu
Summary: This study focuses on improving the performance of PEN by synthesizing crystalline copolymers HQ/BPA-PEN, which exhibit excellent thermal and mechanical properties, with HQ/BPA-PEN85 copolymer showing the best results. These copolymers have potential applications in high temperature resistant materials and electronic materials.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Chemistry, Physical
Shuning Liu, Ling Tu, Chenchen Liu, Lifen Tong, Zhongxiang Bai, Guo Lin, Kun Jia, Xiaobo Liu
Summary: This study focuses on preparing high-temperature resistant composites by introducing nitrile-functionalized agents on the surface of multiwalled carbon nanotubes. The resulting composites exhibit excellent mechanical, thermal, and dielectric properties, making them suitable for energy storage applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Linsen Zuo, Chenjiang Wu, Lifen Tong, Xiaobo Liu
Summary: Aramid fiber (AF)-reinforced composite with polyarylene ether nitrile terminated with phthalonitrile (PEN-t-Ph) modification shows improved performance, with the molecular weight of PEN-t-Ph having a significant impact on mechanical properties and interface compatibility of the composite laminate. Adjusting the molecular weight of PEN-t-Ph resin can enhance the overall performance of the composite laminate, providing new possibilities for AF-reinforced materials.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Chemistry, Multidisciplinary
Chenjiang Wu, Linsen Zuo, Lifen Tong, Xiaobo Liu
Summary: In this study, a crystalline PEN copolymer was synthesized using random copolymerization method and modified through heat treatment and thermal stretching. The final sample showed excellent performance with high thermal decomposition temperature, mechanical tensile strength, low dielectric constant, and low dielectric loss. This new effective method provides potential application value for modified PEN copolymers in high temperature resistance and electronics.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Yaqi Chen, Lifen Tong, Guo Lin, Xiaobo Liu
Summary: In this study, SWCNTs/phthalocyanine polymer composite derived self-nitrogen-doped graphene-like porous carbon (SPCM) was synthesized through a simple solution blending and mechanical stirring method. The SPCM showed high specific capacitance and excellent stability as an electrode material for supercapacitors.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Coatings & Films
Yunqing Xia, Shuai Zhang, Lifen Tong, Shuning Liu, Guo Lin, Zhongxiang Bai, Yi He, Xiaobo Liu
Summary: This study introduces poly(arylene ether nitrile) (PEN) as a protective coating on metallic substrates for the first time, and incorporates cyano-functionalized multiwalled carbon nanotubes (MWCNTs-CN) to enhance corrosion resistance and mechanical performance. The electrochemical results demonstrate outstanding corrosion resistance and improved tensile strength of the MWCNTs-CN/PEN coating. This work provides a novel insight in high-performance protective coating.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Polymer Science
Ying Zhu, Lifen Tong, Xiaobo Liu
Summary: A novel series of polyarylene ether nitrile (PEN) random copolymers with higher T-g and improved mechanical and electrical properties were synthesized. The performance of PEN random copolymer could be controlled by adjusting the mole ratio of BP to ND. The copolymers with 15% ND exhibited the best comprehensive performances.
HIGH PERFORMANCE POLYMERS
(2022)
Article
Polymer Science
Liang He, Lifen Tong, Xiaobo Liu
Summary: A novel high-temperature-resistance phthalonitrile end-capped polyarylene ether nitrile (HTR-PEN-Ph) film was fabricated via cross-linking reaction, showing excellent thermal and mechanical properties. It has great potential for industrial manufacturing.
HIGH PERFORMANCE POLYMERS
(2022)
Article
Engineering, Electrical & Electronic
Tianrui Li, Chenjiang Wu, Chenchen Liu, Liang He, Yingfa Liu, Yunqing Xia, Guo Lin, Lifen Tong, Xiaobo Liu
Summary: This study investigated the influence of carbon nanotubes (CNTs) content on the crystallization behavior and dielectric properties of semi-crystalline polyarylene ether nitrile (PEN). The results showed that the introduction of CNTs significantly improved the crystallization properties of the PEN/CNTs composite, resulting in increased heat resistance, good mechanical strength, and toughness.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Polymer Science
Liang He, Lifen Tong, Yunqing Xia, Guo Lin, Ting Wang, Wanru Zhang, Yingfa Liu, Xiaobo Liu
Summary: A novel polymer was prepared by combining phthalonitrile end-capped polyarylene ether nitrile (PEN-Ph) and bisphthalonitrile (BPh) using post-solid phase chemical reaction technology. The mechanical properties of the PEN-Ph/BPh composite materials were significantly improved by changing the pre-polymerization time of BPh. Furthermore, the composite films exhibited excellent thermal properties and dielectric stability, making them suitable for use in high-temperature electronic fields.
Article
Engineering, Multidisciplinary
Keyu Zhu, Xitao Zheng, Jing Peng, Jiaming Sun, Ruilin Huang, Leilei Yan
Summary: This paper discusses the influence of multiple impacts on the compression strength of honeycomb sandwich structures with composite face sheets. It is found that the size of the impactor affects the turning point of the compression strength. Additionally, high impact energy leads to damage in the bottom face sheet and reduces the overall compression strength.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Danqian Wang, Yanfei Yue, Jueshi Qian
Summary: Magnesium Potassium Phosphate Cement (MKPC) as a binder for steel rebars shows improved corrosion resistance when subjected to carbonation, due to the increase in pH and the formation of a more protective oxide film.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Zhibin Li, Wenyu Wang, Pengcheng Xue, Xingyu Wei, Jian Xiong
Summary: This work proposes a design approach and manufacturing method for carbon fiber reinforced plastic (CFRP) corrugated sandwich truncated cones (CSTC) to improve their anti-debonding ability and ensure reliability. The study establishes theoretical models for CSTCs' stiffness and failure modes, which are verified through experiments and finite element analysis (FEA). The research reveals the effect of geometric parameters on failure modes and performs an optimal design for CSTC structures. The findings have significant implications for the design and application of lightweight CSTCs in constructions, such as launch vehicle adapters.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Mingyu Zhang, Lei Chu, Jiahua Chen, Fuxun Qi, Xiaoyan Li, Xinliang Chen, Deng-Guang Yu
Summary: This review summarizes the different structures and construction methods of fibrous membranes with asymmetric wettability. It also reviews the biological applications of these membranes and suggests future challenges.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
E. Mofakhami, L. Gervat, B. Fayolle, G. Miquelard-Garnier, C. Ovalle, L. Laiarinandrasana
Summary: This study investigates the effects of fibre concentration on the mechanical response of welded glass-fibre-reinforced polypropylene (GF-PP). Experimental observations reveal a significant reduction in weld ratio, up to 60%, indicating a decreased strength compared to the bulk material. Increasing fibre content in the welded material results in a decrease in stress at break and strain at the maximum stress. The use of DIC technique and X-ray microtomography further confirms the localized strain amplification in the welded zone due to the significant increase in fibre density.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Emad Pourahmadi, Farjad Shadmehri, Rajamohan Ganesan
Summary: This research compares the mechanical properties of laminates manufactured using automated fiber placement and conventional autoclave curing methods. The results show that laminates manufactured using automated fiber placement have a lower interlaminar shear strength compared to laminates reconsolidated using autoclave curing. A finite element simulation method is proposed to quantitatively analyze these differences.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Johnny Jakobsen, Benny Endelt, Fahimeh Shakibapour
Summary: This study proposes a new bolted/pinned joining method for composite applications, which improves load transfer by introducing a patch-type reinforcement. Experimental results demonstrate significant improvements in both static and fatigue load conditions compared to existing methods. Finite element simulations highlight the advantage of this method, as it creates a more efficient load-transferring mechanism through different stress distributions.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Gisele G. Cintra, Janine D. Vieira, Daniel C. T. Cardoso, Thomas Keller
Summary: This paper proposes a novel approach to assess multi-crack behavior in layered fiber-polymer composites. The generated Compliance and R-curves provide useful insights into understanding the multiple delamination process and allow for separate evaluation of strain energy release rate (SERR) for each crack. The developed cohesive zone model successfully simulates the failure process zone of three parallel cracks, showing good agreement between the numerical model and experimental results.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Renil Thomas Kidangan, Sreedhar Unnikrishnakurup, C. Krishnamurthy, Krishnan Balasubramaniam
Summary: The induction heating process can accurately identify fiber orientation and stacking order, making it a valuable tool for large-area inspection and quality control in manufacturing fiber-reinforced composites.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Sungjun Hwang, Yousoo Han, Douglas J. Gardner
Summary: Bleached Kraft pulp, unbleached Kraft pulp, and old corrugated cardboard pulp are suitable for producing cellulose nanofibril suspensions. Spray drying is a fast, simple, cost-effective, and scalable drying method. Spray-dried cellulose nanofibrils can be used as reinforcing materials in polypropylene matrices. The particle size of cellulose nanofibrils affects the material properties.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Mehdi Mahdavi, Abbas Zolfaghari
Summary: This study aims to improve the recovery forces of shape memory polymers (SMPs) through material extrusion additive manufacturing. By using glass fiber (GF) as reinforcement and manufacturing multi-layer composite specimens, it was found that PLA with 6.62% GF exhibited the best recovery force, which was further optimized through annealing heat treatment.
COMPOSITES PART B-ENGINEERING
(2024)
Review
Engineering, Multidisciplinary
Xiang Ao, Antonio Vazquez-Lopez, Davide Mocerino, Carlos Gonzalez, De-Yi Wang
Summary: The vulnerability of natural fibers to heat and fire poses a significant challenge for their substitution of traditional fiber reinforcements in composite materials. Natural fiber/polymer composites (NFCs) are regarded as potential candidates for engineering applications due to their environmental friendliness and low-impact sourcing. Thus, appropriate approaches need to be implemented to enhance the fire safety of NFCs. This review summarizes and discusses the latest understanding of flammability and thermal properties of natural fibers, with a special focus on their interaction with polymer matrix in fire behavior. Additionally, the latest developments in flame-retardant approaches for NFCs are reviewed, covering both flame retardancy and fire structural integrity. Finally, future prospects and perspectives on fire safety of NFCs are proposed, providing insights into further advancements of NFCs.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Cheng Wang, Siqi Huo, Guofeng Ye, Bingtao Wang, Zhenghong Guo, Qi Zhang, Pingan Song, Hao Wang, Zhitian Liu
Summary: The demand for multifunctional, transparent epoxy resin with superior dielectric, mechanical, and fire-safety performances is increasing in modern industries. Researchers have developed an epoxidized, phosphaphenanthrene-containing poly(styrene butadiene styrene) (ESD) for advanced fire-safe epoxy resin, which maintains high transparency and improves UV-blocking property. The addition of 10 wt% ESD results in improved mechanical properties, decreased dielectric constant and loss, and outperformance compared to other fire-safe epoxy resins. This research provides an effective method for developing multifunctional flame-retardant epoxy resin.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Bo Pang, Heping Zheng, Zuquan Jin, Dongshuai Hou, Yunsheng Zhang, Xiaoyun Song, Yanan Sun, Zhiyong Liu, Wei She, Lin Yang, Mengyuan Li
Summary: This study develops an internal superhydrophobic material (ISM) using waste denitrification fly ash, which maintains stable hydrophobicity under harsh conditions of use and does not rely on expensive fluor-based surface modifications. The synthesized ISM has excellent matrix strength, strong waterproof properties, and retains superhydrophobicity even at damaged or friction interfaces.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Meirbek Mussatayev, Qiuji Yi, Mark Fitzgerald, Vincent K. Maes, Paul Wilcox, Robert Hughes
Summary: Real-time monitoring of carbon fibre composites during Automated Fibre Placement (AFP) manufacturing remains a challenge for non-destructive evaluation (NDE) techniques. This study designed a directional eddy-current (EC) probe to evaluate the detectability of out-of-plane wrinkles. Experimental evaluations and finite element modeling were conducted to better understand the relationship between eddy-current density and defect detection. The findings suggest that the probe configuration with an asymmetric driver coil and differential pickup coils shows the best capability for wrinkle detection.
COMPOSITES PART B-ENGINEERING
(2024)
