Article
Polymer Science
Daria Poliakova, Oleg Morozov, Yakov Lipatov, Alexander Babkin, Alexey Kepman, Viktor Avdeev, Boris Bulgakov
Summary: This study successfully reduced the processing time of phthalonitrile resin by synthesizing a novel novolac oligomer with fully substituted phthalonitrile moieties and optimizing the curing program based on various factors. The resulting resin exhibited stability at high temperatures and high-performance composite laminates were fabricated using hot-pressing of prepregs.
Article
Polymer Science
Mingzhen Xu, Bo Li, Xiongyao Li, Zexu Fan, Dengxun Ren
Summary: This study systematically investigates the curing behaviors of self-polymerization epoxy/phthalonitrile (APPEN) pre-polymers. The key factors affecting the co-polymerization of APPEN are defined, and appropriate pre-polymerization conditions are analyzed. The thermomechanical and mechanical properties of glass-fiber-reinforced APPEN laminates are analyzed, revealing their outstanding performance. The findings contribute to the application of epoxy-matrix-based composites in high-performance polymer composites.
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)
Article
Polymer Science
Yu Pu, Huanxin Xie, Xian He, Jiangbo Lv, Zhengzhu Zhu, Jinlang Hong, Ke Zeng, Jianghuai Hu, Gang Yang
Summary: The thiophenol derivative MPD was synthesized to promote the curing reaction of phthalonitrile monomer 3BOCN. The study found that sulfhydryl groups have a high curing efficiency and lead to the formation of specific structures during the curing process. The cured resins show excellent thermal stability and high Tg.
Article
Polymer Science
Chong Gao, Hongbo Gu, Ai Du, Heng Zhou, Duo Pan, Nithesh Naik, Zhanhu Guo
Summary: Polyaniline (PANI) as a polymeric catalyst exhibits outstanding efficiency in the curing process of phthalonitrile resin, with triazine structure being the main curing product, confirmed by FTIR spectra. The cured PANI/phthalonitrile resin shows high char yield and improved hardness compared to regular amine catalyst/phthalonitrile resin.
Article
Polymer Science
Jiajia Ye, Qiusha Li, Shuai Zhang, Xiaobo Liu
Summary: In this study, a modified resin with higher reactivity and lower curing temperature was successfully synthesized by introducing melamine moiety into phthalonitrile. The modified resin formed various chemical structures during the reaction process, showing higher thermal stability.
Article
Polymer Science
Wenbo Zhang, Sichun Li, Jianzhong Ma, Yingke Wu, Chao Liu, Hongxia Yan
Summary: The electrostatic interaction between polymers and nanofillers plays a crucial role in the properties and design of composites. NGO can enhance the thermal stability and toughening effect of polyacrylates to different degrees. The research results offer potential methods for designing polymer-based nanocomposites.
Article
Polymer Science
Dengxun Ren, Mingzhen Xu, Sijing Chen, Xiaoqian Xu, Shuai Zhang, Mangui Han, Xiaobo Liu
Summary: Introduction of fluorinated substituents in molecular chains is an efficient method to prepare materials with decreased dielectric constant and loss, as demonstrated in the synthesis of a kind of fluorinated phthalonitrile containing benzoxazine. The cured BPAF-ph showed double-stage curing reaction behaviors and good processability, with structures and properties being influenced by different post curing procedures. The glass fiber reinforced BPAF-ph composites exhibited promising properties in terms of thermal and mechanical stability.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Polymer Science
Xiaoqing Liu, Shuai Zhang, Jiajia Ye, Miao Wu, Jingyu Hou, Xiaobo Liu
Summary: By modifying bismaleimide-triazine (BT) resin with 4-(4-amino-phenoxy)phthalonitrile (4-APN), the reactivity of BT resin can be increased and the curing temperature can be decreased, resulting in poly(BT/APN)s with high heat-resistance, high breakdown strength, excellent insulation properties, improved moisture resistance and toughness. Therefore, poly(BT/APN)s can be considered as an ideal material for microelectronics.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Energy & Fuels
Narges Nazari, Ahmad Allahbakhsh, Ahmad Reza Bahramian
Summary: An analytical thermal conductivity model for porous composites with colloidal matrix morphologies was developed, which considers the simultaneous presence of fillers and pores in the structure. The model was validated using novolac/graphene oxide nanocomposite aerogels and showed acceptable accuracy in predicting the effective thermal conductivity. The model can be used to study and manage the structure/heat transfer relations in porous composite materials.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Correction
Chemistry, Multidisciplinary
Xuebing Chen, Weijiao Jiang, Bo Hu, Zhiming Liang, Yue Zhang, Jian Kang, Ya Cao, Ming Xiang
Summary: The paper titled "Correction for 'Effects of graphene oxide size on curing kinetics of epoxy resin'" by Xuebing Chen et al. discusses the impact of graphene oxide size on the curing kinetics of epoxy resin. The study provides insights into the significant influence of graphene oxide size on the curing process of epoxy resin and proposes a correction model to predict the effects of graphene oxide with different sizes.
Article
Thermodynamics
Hanqi Zhang, Bing Wang, Jiqiang Hu, Dongqing Wang, Yajun Zou, Yongsheng Yang
Summary: The study investigated the curing behavior of phenol-containing phthalonitrile monomer and found that it has a strong reactivity with significantly lower activation energy compared to phenol-catalyzed reactions. By verifying the accuracy of the curing kinetic equation and predicting the curing time, it provided important insights for the application of phenol-containing phthalonitrile polymer.
THERMOCHIMICA ACTA
(2021)
Article
Materials Science, Characterization & Testing
Yuan Zu, Lishuai Zong, Jinyan Wang, Xigao Jian
Summary: This study systematically investigated the kinetics of the curing reaction between branched phthalonitrile resin and 4,4'-dia-minodiphenyl sulfone, finding that the reaction was chemistry and diffusion controlled. Predicted autocatalytic kinetic model curves fit well with non-isothermal DSC data, providing important insights for predicting curing behavior in other complex phthalonitrile systems.
Article
Materials Science, Multidisciplinary
Jianghuai Hu, Yu Pu, Rongtao Zhou, Xian He, Ke Zeng, Gang Yang
Summary: In this study, a radical initiation unit (disulfide segment) was introduced into phthalonitrile resins for the first time to investigate the presence of a radical mechanism in the curing process. A disulfide-bond-containing phthalonitrile monomer (DPBPN) was successfully synthesized. The study showed that DPBPN exhibited a low melting point, a wide processing window, and good thermal stability and glass transition temperature during the curing process.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Engineering, Chemical
Long Tian, Nigel J. D. Graham, Xiangyu Tian, Ting Liu, Wenzheng Yu
Summary: Recent studies have found that graphene oxide (GO) has great potential as advanced separation membranes for water-related environmental applications. However, GO membranes often have low water permeability and stability issues. This study developed a novel approach involving intra-defect construction and cation cross-linking to prepare highly permeable and stable GO membranes for water purification. The membrane showed excellent water flux and selectivity, as well as long-term stability and pressure-resistance.
JOURNAL OF MEMBRANE SCIENCE
(2023)
