HIGH PERFORMANCE POLYMERS
·
2021
·
IF 2.161
Shajie Luo,Fajian Ren,Jiangang Dai,Yan Chen,Zhongzhu Yang
Two kinds of novel poly(arylene ether nitrile)s (CPDP-DCBN and CHDP-DCBN) containing pendant aliphtatic ring were synthesized by 4,4′-cyclopentane-1,1′-diyldiphenol (CPDP) or 4,4′-cyclohexane-1,1′-diyldiphenol (CHDP) and 2,6-dichlorobenzonitrile (DCBN) in this work. The inherent viscosities of poly(arylene ether nitrile)s (PENs) were in the range of 0.701–0.806 dL g−1. The polymers showed high glass transition temperatures (Tg) of 185.4–196.4°C and weight-loss temperatures (T5%) of 447.8–454.3°C. The obtained CPDP-DCBN and CHDP-DCBN could be hot pressed into the films, which showed the tensile strengths of 82.6 MPa and 86.8 MPa, respectively. And the storage modulus of CPDP-DCBN and CHDP-DCBN were about 1.0 GPa and 1.5 GPa at 150°C, respectively. Additionally, the PENs could be dissolved in many solutions at room temperature, such as NMP and concentrated H2SO4, indicating that they had good solubility; they can be processed by the solution method. Meanwhile, the optical transmittance of CPDP-DCBN was 78.1% at 450 nm; it has potential to be applied to the heat-resistant optical film.
研究领域:
高分子化学
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材料科学
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产品关联
DOI
高影响因子
Polymers
·
2019
·Vol. 11
·期 3
·418
·
IF 3.164
Shuning Liu,Chenchen Liu,Changyu Liu,Ling Tu,Yong You,Renbo Wei,Xiaobo Liu
Barium titanate (BT) and polyarylene ether nitrile (PEN) nanocomposites with enhanced dielectric properties were obtained by using carboxylatedzinc phthalocyanine (ZnPc-COOH) buffer as the plasticizer. Carboxylated zinc phthalocyanine, prepared through hydrolyzing ZnPc in NaOH solution, reacted with the hydroxyl groups on the peripheral of hydrogen peroxide treated BT (BT-OH) yielding core-shell structured BT@ZnPc. Thermogravimetric analysis (TGA), transmission electron microscopy (TEM), TEM energy dispersive spectrometer mapping, scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared (FTIR) demonstrated successful preparation of BT@ZnPc. The fabricated BT@ZnPc was incorporated into the PEN matrix through the solution casting method. Rheological measurements demonstrated that the ZnPc-COOH buffer can improve the compatibility between BT and PEN effectively. With the existence of the ZnPc-COOH buffer, the prepared BT@ZnPc/PEN nanocomposites exhibit a high dielectric constant of 5.94 and low dielectric loss (0.016 at 1000 Hz). BT@ZnPc/PEN dielectric composite films can be easily prepared, presenting great application prospects in the field of organic film capacitors.Keywords:barium titanate;polyarylene ether nitrile;zinc phthalocyanine;dielectrics;rheology
研究领域:
材料科学
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电气工程
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DOI
PubMed
高影响因子
Polymers
·
2019
·Vol. 11
·期 9
·1403
·
IF 3.164
Lifen Tong,Xiting Lei,Guangyao Yang,Xiaobo Liu
A novel poly(arylene ether nitrile) terminated with hydroxyl groups (PEN–OH) was synthesized successfully. The effects of heat-treatment temperature on the thermal properties, mechanical properties, and dielectric properties of the PEN–OH films were studied in detail. Due to the cross-linking reaction occurring, at high temperature, among the nitrile groups on the side of the PEN–OH main chain to form a structurally stable triazine ring, the structure of materials changes from a linear structure to a bulk structure. Thus, the thermal properties and mechanical properties were improved. In addition, the occurrence of cross-linking reactions can reduce the polar groups in the material, leading to the decrease of dielectric constant. As the heat-treatment temperature increased, the glass-transition temperature increased from 180.6 °C to 203.6 °C, and the dielectric constant decreased from 3.4 to 2.8 at 1 MHz. Proper temperature heat-treatment could improve the tensile strength, as well as the elongation, at the break of the PEN–OH films. Moreover, because of the excellent adhesive property of PEN–OH to copper foil, a double-layer flexible copper clad laminate (FCCL) without any adhesives based on PEN–OH was prepared by a simple hot-press method, which possessed high peel strength with 1.01 N/mm. Therefore, the PEN–OH has potential applications in the electronic field.Keywords:low dielectric constant;poly(arylene ether nitrile);thermal properties;self-toughening;self-enhancement
研究领域:
材料科学
·
电子工程
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Fengjiao Duan,Chenchen Liu,Xiaocan Liu,Lingling Wang,Shuai Zhang,Xiaobo Liu
In recent years, metal ions have been cross-linked with composite to improve their adsorption capacity, which has a wide range of applications in environmental treatment, biomedicine and other fields. In this work, Fe 3+ was complexed with block polyarylene ether nitrile (PEN) to form regular cubic blocks, which provided sufficient sites for the attachment of TiO 2 . Four types of PEN-Fe 3+ @TiO 2 hybrid cubes were successfully prepared by changing the content of TiO 2 . The adsorption and photocatalytic degradation properties of PEN-Fe 3+ @TiO 2 were evaluated by UV-Vis spectrophotometer. The results showed that the adsorption capacity of PEN-Fe 3+ @TiO 2 increased with the increase of TiO 2 , and the maximum adsorption capacity and the photocatalytic degradation ratio reached 914.42 mg/g and 99%, respectively. The effect of pH on the adsorption capacity was further studied and it was found that the PEN-Fe 3+ @TiO 2 composites showed better adsorption property under alkaline conditions. Moreover, the adsorption kinetic fitting showed that the whole adsorption process obeyed the pseudo-second-order kinetic model, which indicated that the adsorption process was dominated by chemical adsorption .
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
Polymers
·
2017
·Vol. 9
·期 11
·596
·
IF 3.364
Zejun Pu,Xiaoyi Zheng,Yuhan Tian,Linqing Hu,Jiachun Zhong
In this report, flexible cross-linked polyarylene ether nitrile/functionalized barium titanate(CPEN/F-BaTiO3) dielectrics films with high permittivitywere prepared and characterized. The effects of both the F-BaTiO3and matrix curing on the mechanical, thermal and dielectric properties of the CPEN/F-BaTiO3dielectric films were investigated in detail. Compared to pristine BaTiO3, the surface modified BaTiO3particles effectively improved their dispersibility and interfacial adhesion in the polymer matrix. Moreover, the introduction of F-BaTiO3particles enhanced dielectric properties of the composites, with a relatively high permittivity of 15.2 and a quite low loss tangent of 0.022 (1 kHz) when particle contents of 40 wt % were utilized. In addition, the cyano (–CN) groups of functional layer also can serve as potential sites for cross-linking with polyarylene ether nitrile terminated phthalonitrile (PEN-Ph) matrix and make it transform from thermoplastic to thermosetting. Comparing with the pure PEN-ph film, the latter results indicated that the formation of cross-linked network in the polymer-based system resulted in increased tensile strength by ~67%, improved glass transition temperature (Tg) by ~190 °C. More importantly, the CPEN/F-BaTiO3composite films filled with 30 wt % F-BaTiO3particles showed greater energy density by nearly 190% when compared to pure CPEN film. These findings enable broader applications of PEN-based composites in high-performance electronics and energy storage devices materials used at high temperature.Keywords:polyarylene ether nitrile;surface functionalization;cross-linking;dielectric properties;energy storage capacity
研究领域:
材料科学
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电气工程
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高分子科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
·
2021
·Vol. 28
·期 1
·140-152
·
IF 1.993
Zhengpeng Yu,Jingjing Zeng,Jingyuan Tang,Yu Li,Tingting Jin,Benlan Zeng,Xianhua Wei,Jingsong Liu,Linyu Pu,Xu Huang
Owing to their excellent dielectric properties and energy storage performance, polymer-based composites have shown great potential in the application of pulse energy storage capacitors and electrostatic capacitors. In this study, BaTiO 3 (BT) particles with different sizes were modified with dopamine to prepare core–shell structured BT particles (PDA@BT), and then the poly(arylene ether nitrile) (PEN)-based PDA@BT/PEN composites were prepared. As a common biological material, dopamine has a variety of functional groups which can be used to improve the compatibility between the fillers and the matrix. Moreover, the movement of the carriers at the interface of the composites is limited and the loss is reduced. The composites with an optimized filler size illustrate a high energy density of 1.37 J/cm 3 at 160 kV/mm, which nearly reaches up to the energy density of biaxially oriented polypropylene (BOPP) at low electric field. In addition, the composites have the superior power density of 1.88 MW/cm 3 with a fast discharge time of 0.138 μs.
研究领域:
材料科学
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能源存储
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DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2019
·Vol. 26
·期 3
·1-11
·
IF 1.53
Zhan Yingqing,Zhang Jieming,He Shuangjiang,Zhao Shumei,Bai Yulong,Liu Xiaobo
Easy and efficient surface functionalization is critical for obtaining high-performance barium titanate (BaTiO 3 ) based dielectric polymer composites. We here demonstrated the easy surface functionalization of barium titanate via modified mussel-inspired method, using dopamine and silane coupling agent KH550 as reactive precursors. As-modified BaTiO 3 hybrid presented core-shell structure, which was further compounded with thermally stable poly(arylene ether nitrile)(PEN) via simple solution casting method, thus obtaining dielectric nanocomposite films. As a result, the dielectric constant of PEN was enhanced from 3.5 to 10.7 at 1 KHz by addition of 40 wt% BaTiO 3 hybrid, due to good dispersion of BaTiO 3 nanoparticles and its interfacial interaction with PEN matrix. Furthermore, as-prepared PEN composites exhibited low dielectric loss, which fluctuated in the range of 0.03 to 0.11 at 1 KHz. Besides, the thermal stability of PEN was significantly improved, and the tensile strength was well maintained even the weight ratio of BaTiO 3 hybrid reached 40 wt%. Therefore, thermally stable and dielectric PEN composite films show promising application in special area where high thermal stability, high strength, and high dielectric constant are needed.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2020
·Vol. 39
·期 2
·211-218
·
IF 3.154
Wei Ren-Bo,Zhan Chen-Hao,Yang Yang,He Peng-Lin,Liu Xiao-Bo
With the expanding application of capacitors, thermal resistant dielectric materials are in high demand due to the increasing harsh environments where the capacitors are needed and the heat generated by the capacitors. Herein, we present polyarylene ether nitrile and titanium dioxide hybrids which can be used as thermal resistant dielectrics for these capacitors. Phthalonitrile modified titanium dioxide (TiO 2 -CN) and phthalonitrile end-capped polyarylene ether nitrile (PEN-Ph) are firstly prepared. After being cast into TiO 2 -CN/PEN nanocomposite films, these composites self-crosslink upon heating at 320 °C for 4 h, forming the polyarylene ether nitrile and titanium dioxide hybrids (TiO 2 -PEN). Improved dielectric constants which are stable from room temperature to 200 °C of these hybrids are observed, indicating the potential application of the hybrids as thermal resistant dielectrics.
研究领域:
材料科学
·
电气工程
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DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2025
·
IF 7.7
Zhixuan Zhang,Tong Cao,Hanrong Wu,Ailin Peng,Lifen Tong,Xiaobo Liu,Yumin Huang
The continuous progress of microelectronic technology requires polymer materials with low dielectric constant, low dielectric loss, excellent mechanical properties and heat stability. As an emerging advanced polymer, poly(arylene ether nitrile) has shown great potential in the field of microelectronics. However, there is still a need to decrease its inherent dielectric constant and dielectric loss. In this work, the cross-linked poly(arylene ether nitrile) containing propenyl and trifluoromethyl groups (PEN) was designed and synthesized. Then the cage-like structure of octaphenyl polyhedral oligomeric silsesquioxane (OPOSS) was introduced to prepare the composite membranes by solution-casting method. After undergoing thermal treatment, dual cross-linked networks were formed, with OPOSS securely embedded within them. The results show that the composite films exhibit significantly enhanced heat stability (T 5% ≥ 491 °C), tensile strength (≥72 MPa) and remain great hydrophobicity (106.6–114.2°). More importantly, among all the composite films, the dielectric constant and dielectric loss of the CPEN/OPOSS-8 composite film are as low as 2.19 and 0.0025 at 1 MHz, respectively. Such excellent comprehensive performance, especially in low dielectric constant while obtaining ultra-low dielectric loss, will make it possible to be used as a low dielectric material. This strategy will open up a new way of thinking for the development of low dielectric materials.
研究领域:
材料科学
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高分子化学
·
微电子技术
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 6
·1-9
·
IF 2.8
Feng Mengna,Li Ruitong,Peng Hongke,Shan Jianan,Wang Wenxiang,Song Chenglong,Lin Jing
The polymeric dielectric materials with flexibility, better thermal stability and high dielectric constant have drawn increasing attention due to the wide applications in electrical systems. Herein, the polymer-based dielectric composites were designed by the infiltration of polyaniline (PANI) coated barium titanate (BT) into poly(arylene ether nitrile) (PEN) matrix. It is demonstrated that the dielectric constant of composites could be as high as 15.3@1 kHz, which is approximately 4 times higher than that of pure PEN matrix ( ε r ≈ 3.8@1 kHz). Meanwhile, the maximum dielectric loss of composites (tan δ ≈ 0.0403@1 kHz) remains comparable to that of PEN (tan δ ≈ 0.0147@1 kHz). This phenomenon attributes to the large charge accumulation and interfacial polarization on the interfaces between PANI, BT and PEN. The better interconnectivity caused by the π – π conjugation and hydrogen bond interactions between PANI interlayer and PEN matrix also can facilitate the polarization transmission throughout PANI coating, substantially enhancing dielectric constant. Besides, the PANI-BT/PEN composite films present better thermal stability ( T 5% > 500 °C) and flexibility. This work provides an eco-friendly and easy-handling strategy as alternative way to fabricate high-performance PEN-based dielectric composites.
研究领域:
材料科学
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高分子化学
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电气工程
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2021
·
IF 3.927
Mengna Feng,Deyu Ma,Xuanrong Chen,Pan Wang,Jing Lin
Polymer-based dielectric composites are potential substitute dielectrics for organic thin film capacitors. In this work, the exfoliated molybdenum disulfide (MoS 2 ) was functionalized by mussel-inspired poly(dopamine) (PDA) to form core-shell structured composites (MoS 2 @PDA) under easy-handling and eco-friendly conditions, and then as filler incorporated into poly(arylene ether nitrile) (PEN) matrix. The interfacial interaction and dispersion of MoS 2 @PDA in PEN matrix were improved by the strong adhesion of PDA interlayer to exfoliated MoS 2 , π-π conjugation and hydrogen bond interactions, which formed by the polar nitrile group of PEN and catechol groups of PDA. Therefore, the PEN/MoS 2 @PDA composite films exhibited enhanced dielectric constant, synchronously maintaining better flexibility, thermal stability and the same level of dielectric loss with PEN. Particularly, the addition of 20 wt% MoS 2 @PDA into PEN matrix leaded to substantial growth of dielectric constant up to 12.9 at 1 kHz, while the PEN matrix was just 4.2. Meanwhile, the dielectric composites maintained relatively low dielectric loss of 0.022 at 1 kHz, which was ascribed to the improved compatibility and interfacial interaction between filler and PEN. All in all, a eco-friendly and easy-handling strategy was provided to tune the dielectric constant and dielectric loss of semiconductor/polymer composites, which has great potential to promote the development of dielectric in the fields of organic thin film capacitors.
研究领域:
材料科学
·
电气工程
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Dengxun Ren,Xiaobo Liu,Mingzhen Xu,Xianzhong Tang
Iron phthalocyanine (FePc) with self-assemble properties was used to construct microstructures on carbon fiber (CF). Morphology, roughness and wettability of modified CF were characterized. Then, poly(arylene ether nitriles) (PEN) was chosen to fabricate CF reinforced composites and the interfacial compatibility of composites was investigated by SEM and their viscoelastic properties. Rheological properties including linear viscoelastic region, storage/loss modulus, and viscosity were investigated. Besides, dynamic mechanical properties of the composites were studied under different frequency and the apparent activation energy of glass transition was calculated. Results showed that using a proper PEN solution concentration to impregnate FePc microstructures modified CF could help to form better mechanical interlocking on interface. Besides, influence of shape, size and density microstructures on forming mechanical interlocking was studied and discussed. Results revealed that granule-like microstructures, reducing the size of microstructure, and decreasing the distance between microstructures were benefit to forming better mechanical interlocking on interface. Based on the researches, mechanism of improved interfacial compatibility through forming mechanical interlocking was proposed and the interlaminar shear strength (ILSS) of the composites were studied.
研究领域:
材料科学
·
复合材料
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）