Article
Materials Science, Multidisciplinary
Deng Duan, Xiangdong Gao, Yubing Dong, Xiaoming Qi, Xingxing Zhang, M. D. Zahidul Islam, Yongqing Wu, Xiang Zhao, Xiaomin Li
Summary: Silica aerogel/poly(vinyl alcohol) (PSG) composites were developed with excellent performance. The composites have a uniform distribution of nanopores, exhibit excellent mechanical strength under multiple compressive cycles, and demonstrate thermal insulation, flame retardant, and hydrophobic properties. This study provides a purely green method for industrial applications.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Tongrui Zhang, Shulong Zeng, Hao Jiang, Zeshan Li, Dongyu Bai, Yijun Li, Jianjun Li
Summary: By combining leather solid waste with poly(vinyl alcohol) and polyaniline, a new aerogel with high mechanical strength, flame retardancy, and EMI shielding performance was successfully prepared. The exposure of amino carboxyl groups through solid-state shear milling technology enhanced hydrogen bonding interactions, while the nitrogen elements in the waste contributed to flame retardancy. Additionally, a conductive polyaniline layer was polymerized on the surface, leading to impressive EMI shielding capabilities.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Chemical
Wei Jixuan, Zhao Chunxia, Li Yunchao, Li Yuntao, Sun Zhangmei, Xiang Dong, Li Hui
Summary: Phosphorylated celluloses (PCFs) were obtained by reacting microcrystalline cellulose with phosphorous acid in molten urea, and a flame retardant glutaraldehyde cross-linked poly(vinyl alcohol)/PCF aerogel was fabricated. Thermogravimetric analysis confirmed the enhanced thermal stability of the PVA aerogels incorporating PCF. The introduction of PCF in the aerogel resulted in significantly decreased peak of heat release rate and total heat release values, demonstrating better flame-retardant properties compared to pure PVA aerogel.
POLYMER ENGINEERING AND SCIENCE
(2021)
Article
Polymer Science
Dong-Seop Kim, Byoung-Min Lee, Hyun-Rae Kim, Sangwon Park, Jong-Seok Park, Daeyoung Hwang, Jaewoo Kim, Jae-Hak Choi
Summary: This study investigates the effects of clays and electron beam irradiation (EBI) on the properties of poly(ethylene-co-vinyl acetate) (EVA)/high-density polyethylene (HDPE)/aluminum hydroxide (ATH)/clays composites. The addition of clays and the formation of crosslinked network structures by EBI prove to be effective in improving the physical properties and flame retardancy of the composites.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Article
Biochemistry & Molecular Biology
Jixuan Wei, Chunxia Zhao, Zhaorun Hou, Yuntao Li, Hui Li, Dong Xiang, Yuanpeng Wu, Yusheng Que
Summary: In this study, poly(vinyl alcohol) composite aerogels (PVA/PCF/alpha-ZrP) with excellent flame retardancy were synthesized using exfoliated alpha-zirconium phosphate and phosphated cellulose through the multi-directional freezing method. The composite aerogel showed significantly reduced peak heat release rate, total smoke release, and CO production compared to pure PVA aerogel, while the limiting oxygen index value was improved. The flame retardancy mechanism involved crosslinking and carbonization of PVA chains promoted by PCF and alpha-ZrP, forming a barrier and reducing the emissions of combustible toxic gases.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Diana Serbezeanu, Corneliu Hamciuc, Tachita Vlad-Bubulac, Alina-Mirela Ipate, Gabriela Lisa, Ina Turcan, Marius Andrei Olariu, Ion Anghel, Dana Maria Preda
Summary: Flame-resistant polymer composites were prepared by incorporating flame retardant, cerium oxide, and graphene oxide into a polyvinyl alcohol (PVA) matrix. Thermogravimetric analysis and microscale combustion tests showed improved fire resistance properties due to the addition of these materials. Moreover, composites with LiClO4 exhibited higher electrical conductivity and enhanced electrical properties. Taking these findings into consideration, these improved polymer composites are intended for use in Li-ion battery manufacturing.
Article
Polymer Science
Ningjing Wu, Shanshan Deng, Fei Wang, Mohan Wang, Mingfeng Xia, Hongli Cui, Haoyi Jia
Summary: Poly(vinyl alcohol) (P)/alginate (A)/MMT (M) (PAM) composite aerogels were modified through interpenetrating cross-linking of methyltriethoxysilane (Ms) or gamma-aminopropyltriethoxysilane (K) and calcium ion (Ca2+) as a cross-linking agent, respectively. The compressive moduli of the cross-linked PAM/MsCa and PAM/KCa aerogels greatly increased, reaching approximately 10.5- and 8.2-fold of that of PAM aerogel, respectively. The highly efficient flame-retardant PAM-based composite aerogels with excellent mechanical properties are promising as a sustainable alternative to traditional petroleum-based foams.
Article
Polymer Science
Chen Chang, Xin Guan, Jingya Lin, Hui Nie, Xingping Zhou, Xiaolin Xie, Yunsheng Ye
Summary: This study successfully prepared polymer composites with efficient heat dissipation and flame retardancy by combining hydrothermal reaction and in situ fragmentation. By adding molybdenum disulfide decorated silver nanowires and 3D reduced graphene oxide aerogel micro-particles, the thermal conductivity of the composite was significantly improved, while reducing the heat release rate and total heat release.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Biochemistry & Molecular Biology
Ping Wang, Zhenfeng Wang, Tong Yan, Liyuan Yang, Li Yang, Jiacheng Ling, Shaojie Feng, Pei Xu, Yunsheng Ding
Summary: Multifunctional composites containing multi-walled carbon nanotubes (CNTs), ammonium polyphosphate (APP), and a commercial multifunctional epoxy oligomer (MEO) as chain extender were prepared via melt blending to improve both the mechanical and flame retardant properties of polylactide/poly(butylene adipate-co-terephthalate) (PLA/PBAT) composites. The addition of 6% CNTs and 10% APP in the PLA5-PBAT5/10A/6C composite resulted in optimal flame retardant properties, with a limited oxygen index of 28.3%, decreased peak heat release rate (pHRR) of 368 kJ/m(2), and total heat release (THR) of 72 MJ/m(2). The co-continuous phases in the composite also improved its mechanical properties compared to PLA8-PBAT2 composites.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Polymer Science
Jacek Mirowski, Rafal Oliwa, Mariusz Oleksy, Jolanta Tomaszewska, Joanna Ryszkowska, Grzegorz Budzik
Summary: Adding 20% of raspberry pomace filler after extraction significantly extended the thermal stability time for the composites, but as the concentration of filler in the PVC matrix increased, the composite density, impact strength, and tensile strength values decreased significantly while their modulus of elasticity and Shore hardness increased.
Article
Polymer Science
Wuxiang Zhang, Haoran Wu, Nan Zhou, Xiunan Cai, Yanjuan Zhang, Huayu Hu, Zhenfei Feng, Zuqiang Huang, Jing Liang
Summary: The MBH-MAL complex synthesized by hydrothermal method showed synergistic improvement on the thermal stability and flame retardancy of PVC based composites, with significantly increased static thermal stability time and oxygen index.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Polymer Science
Fa Hu, Bo Cheng, Kun Cong, Dinghua Li, Wenchao Zhang, Zhaolu Qin, Rongjie Yang
Summary: The ladder phenyl/vinyl polysilsesquioxane (PhVPOSS) was used to enhance the flame retardancy of ethylene-vinyl acetate copolymer (EVA)/aluminum hydroxide (ATH) composites by grafting onto EVA molecular chains. The PhVPOSS improved the thermal stability of EVA/ATH composites and exhibited better fire safety as shown by the CONE experiments. The improved flame retardancy was attributed to the formation of Si-C bonds and Si-O bonds, which resulted in a more compact and denser char layer.
Article
Chemistry, Physical
Yi-Ran Li, Ying-Ming Li, Bing -Bing Chen, Wen-Juan Hu, De-Yi Wang
Summary: A new type of electromagnetic absorbent (Fe-MOF-rGO) was prepared in this study by growing metal-organic framework (Fe-MOF) on the surface of reduced graphene oxide (rGO) through a simple one-pot method. The Fe-MOF-rGO composite exhibited high efficiency, light weight, and broadband absorption properties. In addition, it showed excellent flame-retarding properties when incorporated into epoxy resin.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Green & Sustainable Science & Technology
Shuang Qiu, Jun Sun, Yuchun Li, Tao Zhu, Hongfei Li, Xiaoyu Gu, Bin Fei, Sheng Zhang
Summary: In this study, a multifunctional bioderived additive (PA@TA-CS) was prepared to improve the properties of PLA. The addition of PA@TA-CS enhanced the flame retardancy and UV resistance of PLA, and intensified the hydrolysis and microbial degradation of PLA chains. This work provides an effective strategy for extending the service life of bioplastics.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Materials Science, Composites
Xin Zhang, Jiazi Wu, Zhishuai Geng, Zhaolu Qin, Ye-Tang Pan, Wenchao Zhang, Rongjie Yang
Summary: A bio-based vinyl ester resin monomer was prepared and used to overcome the flammability and smoke release issues of vinyl ester resin. The impact of a diluent on the properties of the resin and its fiberglass-reinforced composites was investigated. The results showed that the bio-based resin and its composites had higher glass transition temperatures and improved mechanical properties compared to the conventional resin. Additionally, the bio-based resin exhibited superior flame retardancy and smoke suppression due to its better wettability on fiberglass.
COMPOSITES COMMUNICATIONS
(2023)
Article
Polymer Science
Wen-Jie Yuan, Wei Zhao, Gang Wu, Hai-Bo Zhao
Summary: The novel phosphorus and nitrogen-containing organic nano-layered flame retardant (BA-MA) can effectively improve the combustion performance of flame-retardant polymers while maintaining good mechanical properties; its flame-retardant effect is achieved through mechanisms such as releasing incombustible gas and forming aromatic carbon layers.
Article
Engineering, Multidisciplinary
Meng-En Li, Hai-Bo Zhao, Jin-Bo Cheng, Ting Wang, Teng Fu, Ai-Ning Zhang, Yu-Zhong Wang
Summary: A novel green porous bio-based flame-retardant starch coating was developed to overcome the contradiction among flame retardancy, smoke suppression, and thermal insulation in building insulation materials. The coating showed superior thermal insulation, excellent fire retardancy, and smoke suppression.
Article
Engineering, Environmental
Wei Zhao, Hai-Bo Zhao, Jin-Bo Cheng, Wenxiong Li, Jiayan Zhang, Yu-Zhong Wang
Summary: This article introduces a formaldehyde-free phosphorus-containing polysiloxane coating for flame retardancy of EPS foam. The coating acts as both an adhesive and a flame retardant, providing durable thermal insulation and forming a graphited char layer to isolate oxygen, heat, combustible compounds, and smoke particles during combustion. EPS composites treated with this coating exhibit high fire safety and excellent comprehensive performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Manufacturing
Jia-Yan Zhang, Hai-Bo Zhao, Ai-Ning Zhang, Jin-Bo Cheng, Shu-Liang Li, Wei Zhao, Teng Fu, Ze-Yong Zhao, Yu-Zhong Wang
Summary: In this study, a environmentally friendly and simple flame-retardant nanocoating for flexible polyurethane foam (FPUF) is demonstrated. The nanocoating effectively suppresses smoke and toxic gas release in fire. It reduces peak heat release rate, smoke density, and production of toxic gases, showing excellent extinguishing performance.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Engineering, Environmental
Shu-Liang Li, Jie-Hao He, Zhen Li, Jia-Hui Lu, Bo-Wen Liu, Teng Fu, Hai-Bo Zhao, Yu-Zhong Wang
Summary: Frequent oil spills have caused severe environmental and ecological damage. In this paper, a noncontact electromagnetic induction and solar dual-heating sponge is developed for the quick, safe, and energy-saving cleanup of ultrahigh-viscosity heavy oil.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Furong Zeng, Xiaofeng Men, Mingjun Chen, Bowen Liu, Qingwen Han, Shengchao Huang, Haibo Zhao, Yuzhong Wang
Summary: Polyurethane foams (PUF) are a main cause of urban fires, but incorporating flame retardants severely affects their mechanical properties. This study presents a simple method to fabricate phosphorus-containing multiscale energy dissipation networks (PMNs) to improve the toughness and fire safety of PUF. The unique PMNs facilitate stress redistribution and dissipation, allowing PUF to sustain large deformations and achieve increased fracture strength, elongation at break, and toughness. The PMNs also show better flame retardant performance compared to other phosphorus-containing species.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Min Jiang, Bo-Wen Liu, Feng-Ming He, Qin Zhang, Ao Wang, Hai-Bo Zhao, Li Chen, Yu-Zhong Wang
Summary: We successfully designed and synthesized high-performance polymers with excellent overall properties by simultaneously modulating their chemical constitution and topological conformation. The incorporation of a sidechain caged structure enhanced chain entanglement, leading to improved mechanical strength and heat resistance. Additionally, the flame retardancy of the polymers was significantly enhanced due to the free radical scavenging effect of the phosphorus-based monomer. This work provides a novel method for fabricating high-performance polymers for various applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Wenhui Rao, Jie Tao, Feihao Yang, Tao Wu, Chuanbai Yu, Hai -Bo Zhao
Summary: In this study, copper organophosphate nanosheets were grown on the surface of graphene oxide to improve the flame retardancy and mechanical properties of epoxy resins. The incorporation of functionalized nanosheets significantly improved the impact strength of the nanocomposites. The nanosheets also inhibited smoke and heat release, making the epoxy matrix more fire-safe.
Article
Chemistry, Multidisciplinary
Xin-Cen Lin, Shu-Liang Li, Wen-Xiong Li, Zi-Hao Wang, Jia-Yan Zhang, Bo-Wen Liu, Teng Fu, Hai-Bo Zhao, Yu-Zhong Wang
Summary: This study demonstrates a high-performance thermal insulating aerogel that has the potential for thermal protection in extreme environments. The aerogel exhibits exceptional strengthening and thermal insulation at high temperatures, transforming into high-strength semi-crystalline hard ceramics. This self-ceramifiable aerogel opens up a new avenue for developing thermal-protection materials with toughness, machinability, high strength, and thermal insulation in extreme environments.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Environmental
Jie Tao, Feihao Yang, Tao Wu, Junjiao Shi, Hai -Bo Zhao, Wenhui Rao
Summary: By incorporating a P/Cu-hybrid silica aerogel, we propose a new approach for thermal insulation, flame retardancy, smoke suppression, and reinforcement of polyurethane foams. The hybrid aerogel combines the carbon-promoting action of P, catalytic attenuation of Cu, and the barrier effect of aerogels, resulting in high smoke-suppressing and flame-retardant efficiency. The aerogel-containing composite foam exhibits a special hierarchical porous structure, which enables lower thermal conductivity and higher thermal insulation than pure RPUF.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Guan-Qi Zheng, Bo-Wen Liu, Ling Yuan, Lin Chen, Xiu-Li Wang, Hai-Bo Zhao, Yu-Zhong Wang
Summary: Researchers have developed a synthetic polymer called PIP (polyphenol-inspired polymer) with easy bulk preparation process, inspired by the multiple functions of natural poly-phenols. PIP exhibited tunable performances, such as excellent ultraviolet shielding performance and mechanical strength at low polyphenol content, and high fire safety at high polyphenol content. Additionally, PIP can be easily processed into films and fibers, enabling its wide potential application fields.
CHEMICAL ENGINEERING JOURNAL
(2023)
Correction
Environmental Sciences
Wenhui Rao, Jie Tao, Feihao Yang, Tao Wu, Chuanbai Yu, Hai-Bo Zhao
Correction
Chemistry, Physical
Chuanbai Yu, Tao Wu, Feihao Yang, Heng Wang, Wenhui Rao, Hai-Bo Zhao
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Rong Ding, Yan-Qin Wang, Fu-Rong Zeng, Bo-Wen Liu, Yu-Zhong Wang, Hai-Bo Zhao
Summary: A simple and universal one-step self-flowering method was reported for large-scale fabrication of high-quality ultrathin N-doped porous carbon nanosheets. The layered tannic/oxamide hybrid was shown to spontaneously undergo expansion, exfoliation, aggregation, in situ pore formation, and aromatization during pyrolysis, resulting in flower-like aggregated nanosheets. This approach allows the construction of multiscale NPC-based composites and enables excellent multifunctional performances.
Article
Chemistry, Multidisciplinary
Ting Wang, Jin Xu, Ying-Jiao Zhan, Lei He, Jinni Deng, Zhi-Cheng Fu, Hai-Bo Zhao, Ming-Jun Chen
Summary: In this work, a novel water-based polyelectrolyte complex (PEC) coating was developed from chitosan and a water treatment agent. The intumescent and stable PEC coating can be constructed quickly via facile blading coating and curing processes by controlling the degree of ion pair aggregation through pH adjustment. The coated fabrics show high flame retardancy and excellent extinguishing performances.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
