Article
Polymer Science
Jiachen Wang, Wei Liu, Huan Liu, Xiaodong Wang, Dezhen Wu, Shuangkun Zhang, Shaowei Shi, Weiwei Liu, Zhanpeng Wu
Summary: A novel epoxy monomer, CP-EP, composed of nontoxic eugenol and nonflammable cyclotriphosphazene, was successfully synthesized in this work. The resulting cyclotriphosphazene-based thermosets (CPTs) exhibited improved properties compared to bisphenol-A epoxy resin, including higher glass transition temperature, enhanced mechanical strengths, and enhanced nonflammability. The use of this environmentally friendly and fire-safe epoxy thermosetting system has the potential to benefit both the environment and human health.
Article
Energy & Fuels
Shuaijun Jiang, Weifeng Meng, Yongqing Wan, Weihua Qin, Xiaoqing Liu, Yanhua Lan
Summary: Cyclotriphosphazene derivatives can enhance the flame retardancy and fire safety of epoxy resins by influencing the pyrolysis process. The incorporation of hexa(5-methyl-2-pyridinoxyl)cyclotriphosphazene (HMPOP) promotes the formation of carbon clusters and reduces the generation of combustible gases, ultimately decreasing the capacity for fire propagation.
CHINA PETROLEUM PROCESSING & PETROCHEMICAL TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Yiyang Chen, Hongjuan Wu, Rui Duan, Kailun Zhang, Weihua Meng, Yan Li, Hongqiang Qu
Summary: Sn-doped graphene nanoplatelets (GnPSn) were successfully synthesized and comprehensively characterized. The addition of GnPSn and hexaphenoxy cyclotriphosphazene (HPCTP) in epoxy resin resulted in improved fire resistance and smoke suppression of the composites.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Multidisciplinary
Zhenwei Miao, Dongpeng Yan, Xiaodong Wang, Xinfang Zhang, Wenqi Zhou, Munan Qiu, Fan Yang, Zhanpeng Wu
Summary: In this study, a cyclophosphazene derivative was successfully synthesized and used as a curing agent for epoxy resins, resulting in high-efficiency flame retardancy. The synthesized thermosets exhibited excellent flame retardant properties, thermal stability, and improved carbonization ability at elevated temperatures. Additionally, the release of combustible gases during the pyrolysis process was effectively suppressed by the incorporation of the cyclophosphazene derivative. The nonflammable halogen-free epoxy resin developed in this study has potential applications in the electric and electronic fields for environment protection and human health.
CHINESE CHEMICAL LETTERS
(2022)
Article
Polymer Science
Hafezeh Nabipour, Xin Wang, Mohammad Ziaur Rahman, Lei Song, Yuan Hu
Summary: A vanillin-derived cyclotriphosphazene-cored triazole compound (HHCTP) was synthesized as a flame retardant for epoxy thermosets, significantly improving their flame retardancy while maintaining their thermomechanical properties.
POLYMER DEGRADATION AND STABILITY
(2022)
Article
Polymer Science
Xiaoyang Wang, Jingming Wang, Wei Zhao, Jia Liu, Shijie Long, Dun Wang
Summary: Discussions on the effects of elements on flame retardant properties have been widespread, but studies on the effects of specific structures on flame retardant properties are rare. In this research, two new phosphorus-nitrogen flame retardants were synthesized, and their flame retardant mechanisms were investigated. Experimental results showed that the different structures of the flame retardants have significant effects on the stability of the carbon layer and the production of phosphorus-containing substances.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Review
Polymer Science
Siqi Huo, Pingan Song, Bin Yu, Shiya Ran, Venkata S. Chevali, Lei Liu, Zhengping Fang, Hao Wang
Summary: Phosphorus (P)-containing flame retardants have been widely used in epoxy thermosets due to their high flame retardancy efficiency, low toxicity, and impact on material properties. They are classified into reactive and additive types, and have potential for future research and development.
PROGRESS IN POLYMER SCIENCE
(2021)
Article
Chemistry, Applied
Akos Pomazi, Andrea Toldy
Summary: The research focuses on developing multifunctional, flame retarded epoxy gelcoat formulations using phosphorus-containing intumescent flame retardant. The study found that epoxy resin-based gelcoats with ammonium polyphosphate (APP) exhibited superior thermal stability, especially with increased APP concentration leading to enhanced thermal stability and limiting oxygen index.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Polymer Science
Pei-Xiu Tian, Yi-Dong Li, Yunxuan Weng, Zhi Hu, Jian-Bing Zeng
Summary: In this study, bio-based flame-retardant, reprocessable, and chemically recyclable epoxy thermosets were synthesized. These thermosets exhibited excellent mechanical performances, thermal and dimensional stabilities, and resistances to chemical/solvent corrosions. They also showed promising flame retardancy, making them a potential alternative to conventional epoxy thermosets.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Engineering, Environmental
Xiao-Feng Liu, Yan-Fang Xiao, Xi Luo, Bo-Wen Liu, De-Ming Guo, Li Chen, Yu-Zhong Wang
Summary: In this study, a high-performance and multifunctional epoxy resin EP-DPI was successfully synthesized by incorporating a functional molecule DPI, which exhibited excellent mechanical performance, high glass transition temperature, transparency, UV-shielding effect, and anti-ignition properties. This work opens up a new strategy for developing novel high-performance and multifunctional EPs with potential versatile applications in various fields.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Polymer Science
Liu Zhong, Yu Zhao, Qiaolin Tang, Kaixin Zhang, Weihao Deng, Lewen Zhang, Rong Wang, Jin Chen, Jingjing Deng, Wang Liao, Qiwei Wang, Mingjun Chen, Zhiguo Liu
Summary: A high effective phosphorus-containing flame retardant (DOP-DDM) was synthesized and incorporated into epoxy resin, resulting in improved flame retardancy with V-0 rating in UL 94 test at 4.7wt% loading. The material also exhibited high transmittance similar to neat EP-0 at 96.8%, showing potential for practical application.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Article
Environmental Sciences
Yuan-Fang Ai, Xin-Duo Liu, Wei-Bin Bai, Yu-Cai Lin, Rong-Rong Xie, Rong-Kun Jian
Summary: Amitrole, a herbicide, has been converted into a novel flame retardant (PBA) through organo-phosphorus modification to fabricate fire safe epoxy thermosets (EP). EP-PBA blends exhibit high flame retardancy and comparable mechanical properties.
Article
Polymer Science
Linyuan Wang, Yue Wei, Hongbo Deng, Ruiqi Lyu, Jiajie Zhu, Yabing Yang
Summary: The study found that the addition of Pa-Ba to IFR can improve the flame retardancy of EP composites, leading to a reduction in the amount of IFR needed and expanding the application range of EP. The EP/14IFR/2Ba composite showed the highest LOI value and a significant decrease in PHRR compared to pure EP, indicating better carbonization quality.
Article
Polymer Science
Dingran Zhang, Lingang Lu, Lei Chen, Yiqi Wang
Summary: The new intumescent flame retardant EP composites showed improved flame retardancy and thermal stability by adding different proportions of intumescent flame retardant and synergistic combustion promoter. Addition of 20% APP can increase the limiting oxygen index of EP matrix to 30.5%, and after adding ATH, the formation of a stable carbon layer at high temperatures increased char residue, enhancing heat resistance and oxidation resistance of the material.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Environmental Sciences
Jia-Hui Chen, Jia-Hui Lu, Xiao-Lu Pu, Li Chen, Yu-Zhong Wang
Summary: In this study, we report a novel approach to prepare flame-retardant epoxy vitrimers with rapid recycling and multiple shape memory effects by introducing dynamic ester-linkages with catalytic transesterification activity into the crosslinking networks of epoxy resin (EP). The synthesized vitrimers exhibited high Tg, desirable thermal stability, excellent flame retardancy, and high malleability. The dynamic transesterification network also allowed the vitrimers to access multiple shape memory effect.
Article
Chemistry, Analytical
Bin Zhao, Dong-Yue Liu, Wen-Jun Liang, Fei Li, Jun-Sheng Wang, Ya-Qing Liu
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2017)
Article
Chemistry, Analytical
Bin Zhao, Yan-Ting Liu, Cong-Yun Zhang, Dong-Yue Liu, Fei Li, Ya-Qing Liu
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2017)
Article
Engineering, Environmental
Bin Zhao, Rui Hao, Zhi Wang, Huijuan Zhang, Yaowu Hao, Congyun Zhang, Yaqing Liu
CHEMICAL ENGINEERING JOURNAL
(2018)
Article
Chemistry, Analytical
Long Xia, Rong-kun Jian, Yuan-fang Ai, Xue-lin Zheng, Bin Zhao
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2018)
Article
Polymer Science
Dong-Yue Liu, Bin Zhao, Jun-Sheng Wang, Peng-Wei Liu, Ya-Qing Liu
JOURNAL OF APPLIED POLYMER SCIENCE
(2018)
Article
Materials Science, Multidisciplinary
Bin Zhao, Peng-Wei Liu, Dong-Yue Liu, Thomas J. Kolibaba, Cong-Yun Zhang, Yan-Ting Liu, Ya-Qing Liu
MACROMOLECULAR MATERIALS AND ENGINEERING
(2019)
Article
Polymer Science
Bin Zhao, Peng-Wei Liu, Kuan-Kuan Xiong, Hui-Hui Liu, Pei-Hua Zhao, Ya-Qing Liu
POLYMER DEGRADATION AND STABILITY
(2019)
Article
Materials Science, Paper & Wood
Bin Zhao, Thomas J. Kolibaba, Simone Lazar, Jaime C. Grunlan
Article
Engineering, Environmental
Cong-Yun Zhang, Bai-Chuan Zhao, Rui Hao, Zhi Wang, Yao-Wu Hao, Bin Zhao, Ya-Qing Liu
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Article
Materials Science, Paper & Wood
Bin Zhao, Thomas J. Kolibaba, Simone Lazar, Jaime C. Grunlan
Summary: A new simple and halogen-free flame retardant treatment for cotton, using a Mannich-type reaction, shows promising results in enhancing the fabric's flame retardancy and maintaining it even after washing. The treatment is environmentally benign and has the potential to replace halogen-containing and more complex flame retardant finishing processes.
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
Biochemistry & Molecular Biology
Lin-Lin Zhou, Wen-Xiong Li, Hai-Bo Zhao, Bin Zhao
Summary: This study compares the actions of Co2+ and Ni2+ transition metal cations in LDHs and investigates their use as flame retardants and smoke suppressants for silicone foam. The results show that the addition of LDHs improves the flame retardancy and fire safety of SiF, with NiAl-LDH being more effective. Co and Ni participate in the formation of protective char layers, inhibiting the release of SiO2 into the gas phase.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
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
Cong-yun Zhang, Rui Hao, Bin Zhao, Yao-wu Hao, Ya-qing Liu
APPLIED SURFACE SCIENCE
(2017)
Article
Chemistry, Physical
Cong-yun Zhang, Rui Hao, Bin Zhao, Yizheng Fu, Huijuan Zhang, Sina Moeendarbari, Christopher S. Pickering, Yao-wu Hao, Ya-qing Liu
APPLIED SURFACE SCIENCE
(2017)
Article
Polymer Science
Tetsu Sato, Mariko Takahashi, Takeshi Saito, Masahito Toyonaga, Itsuo Tanuma, Rie Yamada, Satoru Hosoda
Summary: An automatic evaluation system for photooxidation has been developed and successfully applied to assess the photo-OIT of LDPE samples containing photooxidation stabilizers. The system allows independent setting of various measurement conditions and provides detailed information on the photooxidation process.
POLYMER DEGRADATION AND STABILITY
(2024)
Article
Polymer Science
Zongzheng Zuo, Shuxue Zhou
Summary: In this study, three fluoroalkyl trimethoxysilane (FATMS) additives with different chain lengths were incorporated into a two-component polyurethane clearcoat to improve its hydrophobic durability. The coatings modified with FATMS maintained their surface hydrophobicity under various conditions, but quickly lost it when exposed to both UV irradiation and/or high temperature with water. The results suggest that the FATMS route is more suitable for indoor applications at room temperature.
POLYMER DEGRADATION AND STABILITY
(2024)
Article
Polymer Science
Song Li, Feng Zhao, Xueya Wang, Zhihua Liu, Jingze Guo, Yutong Li, Shuangmei Tan, Zhenxiang Xin, Shuai Zhao, Lin Li
Summary: Green flame retardants have garnered attention for their environmental friendliness, but current options fall short in achieving high flame retardancy for flammable polymers and maintaining environmental protection. This study takes a two-pronged approach to address flame retardants and the flame-retardant process. An eco-friendly bio-based synergistic flame retardant (PAU), synthesized using phytic acid (PA) and urea (U), is used to create a flame retardant coating that can be directly applied to any surface shape using polydopamine as an adhesive. The resulting EPS-PAU exhibits excellent flame retardancy, smoke suppression, and light weight while only slightly increasing the density.
POLYMER DEGRADATION AND STABILITY
(2024)