Article
Polymer Science
Wei Wang, Yuan Liu, Hui Wen, Qi Wang
Summary: A hyperbranched polyamide charring agent (HPCA) was synthesized and combined with ammonium polyphosphate (APP) to achieve excellent flame retardant properties in epoxy resin, showing an apparent synergistic effect. The residual char at high temperature was analyzed by using spectroscopy to further explore the synergistic mechanisms. The introduced hyperbranched polyamide structure effectively improved the toughness of the original rigid crosslinking net of epoxy resin.
POLYMER DEGRADATION AND STABILITY
(2021)
Article
Engineering, Environmental
Hongyun Peng, Yanyun Mao, Dong Wang, Shaohai Fu
Summary: A novel boron-nitrogen-phosphorus-linked COFs (BNPC) was developed and employed as flame-retardant filler for PAN fiber, significantly reducing peak heat release rate, total smoke production, and CO production. The BNPC also improved the limiting oxygen index value and offered a cooperative catalytic effect for producing a highly compact and crosslinked char layer barrier. This research provides a scalable strategy for designing COFs with multiple flame retardant elements and shows great application potential in functional polymer materials.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Polymer Science
Kunxiong Wu, Chenyu Zhou, Zhiquan Pan, Qingrong Cheng, Lu Feng, Hanjun Wu, Hong Zhou
Summary: Chitosan-based flame-retardant CCD was synthesized and fully characterized in this study. The modified epoxy resin EP/CCD showed good flame retardancy and smoke suppression. The mechanism of CCD in forming a dense char layer and inhibiting gas and heat transfer during combustion was explored.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Chuan Liu, Kui Xu, Yongqian Shi, Jiawei Wang, Suning Ma, Yuezhan Feng, Yuancai Lv, Fuqiang Yang, Minghua Liu, Pingan Song
Summary: Thermoplastic polyurethane (TPU) is widely used in various industrial fields due to its excellent properties, but its flammability and smoke production limit its applications. This study reports the successful enhancement of fire resistance and mechanical properties of TPU by incorporating a titanium carbide-derived nanohybrid.
MATERIALS TODAY PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Bingtao Wang, Yu Zhang, Juan Li, Zhengping Fang, Zhenghong Guo, Shiya Ran
Summary: In this study, a flame retardant containing sulfonate and phosphazene moieties (HSPP) was synthesized and applied to PC to improve flame retardancy properties without sacrificing transparency. The results showed that a low loading of HSPP (0.04wt%) could significantly improve the flame retardancy of PC, achieving a 30.4% increase in LOI, V-0 rating in UL-94, 25% reduction in THR, and 45% reduction in COY in the cone calorimetry test. The flame retardancy mechanism was attributed to the synergistic carbonization of sulfonates and phosphazene moieties from HSPP and the enhanced barrier effect of PC residual char layer with high graphitization and integrity quality. The transparency and mechanical properties of the PC composite were well maintained due to the low-loading of HSPP.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Polymer Science
Xinyu Wang, Kunxiong Wu, Chenyu Zhou, Zhiquan Pan, Lu Feng, Qingrong Cheng, Hong Zhou
Summary: A new environmentally friendly flame retardant, PO-PA, was synthesized to improve the flame retardancy of epoxy resin. The structure of PO-PA was characterized by various techniques. EP/10%PO-PA achieved the highest flame retardant rating and showed significant reduction in heat release and smoke production. The mechanism of action of PO-PA in promoting the formation of protective char layer and inhibiting oxidation chain reactions was elucidated.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Construction & Building Technology
Wenjing Xia, Siwen Wang, Tao Xu, Guanglai Jin
Summary: The developed NCFR effectively inhibits the combustion behaviors of bitumen and bituminous mixture, forming a more compact and stable char residue. NCFR also reduces smoke release amount and mass loss rate, playing the roles of flame retarding and smoke suppressing effects, thus improving the fire safety of bituminous materials.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Yueming Yu, Yan Zhang, Liangdong Xi, Zhinuo Zhao, Siqi Huo, Guobo Huang, Zhengping Fang, Pingan Song
Summary: In this study, an effective method was found to adjust the polarity of fillers to improve their dispersion in a matrix. By coating polyethylenimine-decorated graphene oxide, the biobased core-shell graphene oxide hybrid achieved a more uniform distribution in the polylactide matrix and enhanced flame retardancy, impact toughness, and UV-shielding properties of the composite material.
JOURNAL OF CLEANER PRODUCTION
(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
Polymer Science
Kai Ning, Lin-Lin Zhou, Bin Zhao
Summary: This study successfully prepared a novel aminothiazole-based cyclotriphosphazene derivative, which was added as a flame retardant in epoxy resin, effectively reducing the fire hazards. The retardant altered the thermal decomposition properties and dynamic thermomechanical behaviors of EP, and achieved good flame retardant effects in fire testing.
POLYMER DEGRADATION AND STABILITY
(2021)
Article
Polymer Science
Ying-Ming Li, Wen-Juan Hu, Shuang-Lin Hu, Yi-Ran Li, Dan-Ping Zhu, De-Yi Wang
Summary: In this study, flame-retarding polyols containing phosphorus and nitrogen elements were prepared and reacted into RPUF chains for the application in high-rise building exterior wall materials. Both APDP and DADP achieved flame-retardancy with a limited oxygen index. The RPUF/APDP(15) exhibited lower flame spread speed, higher compressive strength, and improved flame-retardant effect compared to neat RPUF.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Chemistry, Physical
Yi-Ran Li, Ying-Ming Li, Wen-Juan Hu, Dan-Ping Zhu, Jose Hobson, Antonio Vazquez-Lopez, De-Yi Wang
Summary: In this study, a flame-retarding curing agent (BIPD) was prepared and added to epoxy resin (EP), resulting in increased flexural and impact strength compared to EP/BI10. EP/BIPD10 achieved a UL-94 V-0 rating with a higher limiting oxygen index (LOI) of 33%. The flame-retarding effect was observed in both the condensed and gas phases, as evidenced by decreased heat release rates and increased smoke production and residue content.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Polymer Science
Si Chen, Dandan Wu, Changbo Xu, Meng Ma, Yanqin Shi, Kaiyun Yuan, Ruqing Xu, Xu Wang
Summary: A novel PMMA copolymer, P(MMA-co-HEMAP), was synthesized with flame retardancy, antistatic, toughness and transparency properties by adding HEMAP. The copolymer showed improved flame retardancy and antistatic effects without sacrificing optical properties, significantly reducing heat release rate and total heat release, while increasing limiting oxygen index. The HEMAP also promoted dehydration and carbonization during combustion, reducing fire spread.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Article
Polymer Science
Lin-Lin Zhou, Wen-Xiong Li, Hai-Bo Zhao, Jun-Sheng Wang, Bin Zhao
Summary: There is a need to enhance the fire safety of silicone foam (SiF) in aircraft and high-speed trains. A novel NiTi-layered double hydroxide nanosheets (NiTi-LDH) was prepared as an effective flame-retardant and smoke-suppressor for SiF. The results showed that NiTi-LDH improved the fire resistance of SiF and greatly inhibited smoke release. The catalytic actions of NiTi-LDH in suppressing smoke and flame retardancy were observed in both condensed and gaseous phases.
POLYMER DEGRADATION AND STABILITY
(2022)
Article
Chemistry, Physical
Yong Luo, Yuhui Xie, Wei Geng, Guangfu Dai, Xinxin Sheng, Delong Xie, Hua Wu, Yi Mei
Summary: In this study, MXene was functionalized with phosphorylated chitosan (PCS) to improve its compatibility with the polymer matrix, resulting in the formation of TPU/PCS-MXene nanocomposite with enhanced mechanical and flame-retardant performance. The introduction of only 3 wt% PCS-MXene significantly reduced heat release rate, total heat release, and total smoke production of the composite, showcasing the potential of bio-based PCS-MXene in developing advanced MXene-polymer composites.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Mei Gui Vanessa Wee, Amutha Chinnappan, Runxin Shang, Poh Seng Lee, Seeram Ramakrishna
Summary: Cooling processes, from residences to industries, require a lot of energy and are essential. This study introduces MIL-101(Cr), a new desiccant, to heat exchangers for more efficient cooling. By improving the synthesis method and using a special binder, the MIL-101(Cr)-coated heat exchanger shows improved water uptake capacity and lower regeneration temperature.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Ao Zhen, Guanyu Zhang, Ao Wang, Feng Luo, Jiehua Li, Hong Tan, Zhen Li
Summary: In this study, a solvent-free microemulsion method was used to synthesize waterborne polyurethane (WPU) material with high retention of mechanical properties and satisfactory water absorption rates. The material showed excellent biocompatibility and has broad application potential in the field of biomedicine.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Wensong Ge, Rui Wang, Xiaoyang Zhu, Houchao Zhang, Luanfa Sun, Fei Wang, Hongke Li, Zhenghao Li, Xinyi Du, Huangyu Chen, Fan Zhang, Huifa Shi, Huiqiang Hu, Yongming Xi, Jiankang He, Liang Hu, Hongbo Lan
Summary: This paper reviews the research on the surface tension of eutectic gallium-indium alloys (EGaIn) in the field of stretchable electronics. It covers the principles of oxide layer formation, factors influencing surface tension, and methods for surface modification of liquid metals. The paper also discusses the applications of EGaIn surface modification in different fields and highlights the challenges still faced and the future outlook.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Xiang Song, Lianghao Jia, Zhengen Wei, Tao Xiang, Shaobing Zhou
Summary: This paper provides an overview of the application, preparation, and role of biomimetic structures in solar evaporators with improved evaporation rate and lifetime.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Wei Yuan, Qian Deng, Dong Pan, Xiang An, Canyang Zhao, Wenjun Su, Zhengmin He, Qiang Sun, Ran Ang
Summary: Optimizing the performance of n-type PbTe thermoelectric materials is crucial for practical applications. Dynamic doping has emerged as an effective method to improve the performance of n-type PbTe by optimizing the carrier concentration. This study demonstrates the significance of Mn alloying in enhancing the performance of Ag-doped n-type PbTe by creating a hierarchical structure to suppress thermal transport and improving the Seebeck coefficient.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Xiaoyan Wang, Meiqi Geng, Shengjun Sun, Qian Xiang, Shiyuan Dong, Kai Dong, Yongchao Yao, Yan Wang, Yingchun Yang, Yongsong Luo, Dongdong Zheng, Qian Liu, Jianming Hu, Qian Wu, Xuping Sun, Bo Tang
Summary: This review provides a comprehensive analysis of the progress and challenges in the field of bifunctional electrocatalysts and efficient electrolyzers for seawater splitting. It summarizes recent advancements and proposes future perspectives for highly efficient bifunctional electrocatalysts and electrolyzers.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Jason K. Phong, Christopher B. Cooper, Lukas Michalek, Yangju Lin, Yuya Nishio, Yuran Shi, Huaxin Gong, Julian A. Vigil, Jan Ilavsky, Ivan Kuzmenko, Zhenan Bao
Summary: Dynamic block copolymers (DBCPs) combine the phase separation of traditional block copolymers with the supramolecular self-assembly of periodic dynamic polymers, resulting in the spontaneous self-assembly of high aspect ratio nanofibers with well-ordered PEG and PDMS domains. DBCPs with a periodic block sequence exhibit superior properties compared to those with a random sequence, including delayed onset of terminal flow and higher ionic conductivity values.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Hong Kyu Lee, Yasaswini Oruganti, Jonghyeon Lee, Seunghee Han, Jihan Kim, Dohyun Moon, Min Kim, Dae-Woon Lim, Hoi Ri Moon
Summary: This study reports the moisture-triggered proton-conductivity switching behavior in Zn5FDC MOFs induced by the presence and absence of coordinating solvents, which illustrates the significant role of coordinating solvents in conductivity variation.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Bommaramoni Yadagiri, Sanjay Sandhu, Ashok Kumar Kaliamurthy, Francis Kwaku Asiam, Jongdeok Park, Appiagyei Ewusi Mensah, Jae-Joon Lee
Summary: The molecular engineering of the interface modulator between the perovskite and hole transporting material is crucial for achieving satisfactory performance and stability of perovskite solar cells. In this study, cruciform-shaped dual functional organic materials were employed as surface passivation and hole transporting interfacial layers in perovskite solar cells. The use of these materials significantly improved the power conversion efficiency of the solar cells.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Joaquin Martinez-Ortigosa, Reisel Millan, Jorge Simancas, Manuel Hernandez-Rodriguez, J. Alejandro Vidal-Moya, Jose L. Jorda, Charlotte Martineau-Corcos, Vincent Sarou-Kanian, Mercedes Boronat, Teresa Blasco, Fernando Rey
Summary: This study investigates the synthesis of all-silica RTH zeolites using triisopropyl(methyl)phosphonium as the organic SDA. The results show the formation of two distinct crystalline phases under different synthesis conditions, with fluoride bonding to different silicon sites. It demonstrates the possibility of controlling the placement of fluoride in RTH zeolites through synthesis conditions.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Luyao Zheng, Cong Liu, Wenbiao Zhang, Boxu Gao, Tianlan Yan, Yahong Zhang, Xiaoming Cao, Qingsheng Gao, Yi Tang
Summary: This study successfully improves the efficiency and stability of water splitting by constructing a heterostructured electrocatalyst. The catalyst shows extraordinary performance and could offer an effective approach for the sustainable production of hydrogen.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Carlos A. Campos-Roldan, Raphael Chattot, Frederic Pailloux, Andrea Zitolo, Jacques Roziere, Deborah J. Jones, Sara Cavaliere
Summary: This study systematically evaluated the hydrogen evolution/oxidation reactions on a series of Pt-rare earth nanoalloys in alkaline media, and identified the effect of the lanthanide contraction. The experimental results revealed that the chemical nature of the rare earth modulates the adsorption and mobility of oxygenated-species, enhancing the kinetics of the reactions.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Sara Frank, Mads Folkjaer, Mads L. N. Nielsen, Melissa J. Marks, Henrik S. Jeppesen, Marcel Ceccato, Simon J. L. Billinge, Jacopo Catalano, Nina Lock
Summary: This study investigates the thermal decomposition of ZIF-67 and its correlation with structural evolution and electrocatalytic performance. The researchers used in situ X-ray absorption spectroscopy and total scattering techniques to analyze the process. They found that disorder emerges at lower temperatures and that extending the pyrolysis process can result in materials with superior electrochemical properties.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Zi-Yang Zhang, Hao Tian, Han Jiao, Xin Wang, Lei Bian, Yuan Liu, Nithima Khaorapapong, Yusuke Yamauchi, Zhong-Li Wang
Summary: By constructing Cu-0-Cu+-NH2 composite interfaces with the assistance of SiO2, the electrochemical CO2 reduction reaction (CO2RR) achieves high Faraday efficiency and current density for C2+ production, improving the productivity of carbon cycle.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Ting Wang, Ruijuan Zhang, Pengda Zhai, Mingjie Li, Xinying Liu, Chaoxu Li
Summary: This study successfully exfoliated COFs using a simple electrochemical method, which resulted in improved photocatalytic performance for COFs and enriched the fabrication approach of COF exfoliation.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)