Article
Polymer Science
Jiawei Jiang, Siqi Huo, Yi Zheng, Chengyun Yang, Hongqiang Yan, Shiya Ran, Zhengping Fang
Summary: By combining UiO66-NH2 with halloysite nanotubes, a novel synergistic flame retardant H-U was developed to significantly improve the thermal stability and fire safety of EP containing HPCP. However, it was found that the flame retardant performance of EP composites was slightly weakened with the introduction of H-U in the cone calorimeter test.
Article
Nanoscience & Nanotechnology
Weijun Yang, Hui Ding, Tianxi Liu, Rongxian Ou, Jieying Lin, Debora Puglia, Pengwu Xu, Qingwen Wang, Weifu Dong, Mingliang Du, Piming Ma
Summary: By combining vanillin-based epoxy resin with graphene aerogel, inherently flame-retardant and thermally conductive composites were successfully designed and prepared. The composite material exhibits superior mechanical and thermal properties, making it suitable for the preparation of high-performance biobased flame-retardant materials.
ACS APPLIED MATERIALS & INTERFACES
(2021)
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
Materials Science, Composites
Chun Yan, Pengwei Yan, Haibing Xu, Dong Liu, Gang Chen, Guangbin Cai, Yingdan Zhu
Summary: The influence of hexaphenoxycyclotriphosphazene (HPCTP) on the mechanical properties of GF/PA6 composites was studied, showing no obvious effect on tensile properties but a decrease in flexural and interlaminar shear strength with the addition of 30% HPCTP. The flame retardancy mechanism of GF/PA6/30%HPCTP composites involves releasing incombustible gases in the gas phase and forming char layers in the condensed phase.
POLYMER COMPOSITES
(2022)
Article
Engineering, Environmental
Jingjing Meng, Pengfei Chen, Rui Yang, Linli Dai, Cheng Yao, Zheng Fang, Kai Guo
Summary: Novel polymers based on naturally available honokiol were fabricated to produce renewable and functional epoxy resins, showing excellent thermal stability, conductivity, high specific heat, dielectric properties, and low flammability. The high-performing networks have great potential applications in the electronics and microelectronics industry.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Agricultural Engineering
Xu-Chen Jiang, Ping Li, Yun Liu, Yuan-Wei Yan, Ping Zhu
Summary: In this study, ammonium polyphosphate (APP) was coated on the surface of ramie fabrics (RFs) to obtain flame-retardant RF reinforced epoxy resin composites. The flameretardant composites achieved a limiting oxygen index of 33.8% and UL-94 V-0 rating when the weight gain rate of APP in RFs was about 20%. Additionally, the flame-retardant composites showed reduced peak heat release rate, total heat release values, and smoke production. However, the presence of APP had a negative effect on the internal compatibility and mechanical properties of the composites.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Multidisciplinary
Siyu Jiang, Chunhua Lou, Yongli Zhou, Xiaohua Gu, Xianzhi Kong
Summary: Corn straw/epoxy resin composites (CS/ECs) and maleic anhydride acetylated CS/ECs (MA-CS/ECs) were prepared and characterized. The interfacial affinity of the composites was confirmed by the contact angle. The results demonstrated the successful bonding of maleic anhydride onto the structure of corn straw. The MA-CS/ECs showed better impact and flexural resistance, and stronger interfacial compatibility than CS/ECs.
Article
Materials Science, Multidisciplinary
Anlin Zhang, Jianzhong Zhang, Lina Liu, Jinfeng Dai, Xinyu Lu, Siqi Huo, Min Hong, Xiaohuan Liu, Mark Lynch, Xuesen Zeng, Paulomi Burey, Pingan Song
Summary: Fabricating a high-performing thermoset using bio-based flame retardant is critical for sustainable development. A novel flame retardant named DAL-x, fabricated by grafting DOPO onto lignin, is used to manufacture epoxy composites with industrial requirements. The resulting DAL-x/EP composite exhibits excellent flame retardancy and improved mechanical properties compared to pure EP. This work offers a feasible strategy for creating efficient bio-based flame retardants and preparing high-performance EP composites that meet fire retardancy requirements in industries.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Chang Liu, Ping Li, Ying-Jun Xu, Yun Liu, Ping Zhu, Yu-Zhong Wang
Summary: Iron alginate, a bio-based material, was used to improve the fire safety of epoxy resin. The addition of iron alginate reduced the heat release rate and smoke production, while maintaining the mechanical properties of the resin.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Applied
Jie Wang, Yu Guo, ShunPing Zhao, Zhihao Zhu, Yan Huang, Tianhao Tian, Yongcun Zhou, Lianghui Bi
Summary: In this study, a structurally novel halogen-free oligomer poly (benzoguanamine phospholipamide) (BQDP) was successfully synthesized and used as an effective flame retardant for epoxy resins. BQDP showed improved limited oxygen index (LOI) values and UL-94 ratings, as well as excellent smoke suppression performance. The combination of phosphaphenanthrene and triazine demonstrated a synergistic effect, resulting in outstanding flame-retardant properties in both gaseous and condensed phases.
REACTIVE & FUNCTIONAL POLYMERS
(2022)
Article
Engineering, Environmental
Wenyuan Zhang, Wenchao Zhang, Ye-Tang Pan, Rongjie Yang
Summary: Transition metal-containing polyhedral oligomeric silsesquioxane complexes were prepared and characterized, showing improved performance of epoxy resin composites through mesoporous structures and chemical reactions.
JOURNAL OF HAZARDOUS MATERIALS
(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
Zheng Li, Zuodong Qin, Chunxuan Li, Guimei Zhang, Aozheng Zhang, Sisi Li, Guoqi Liang, Xin Wang, Wufei Tang
Summary: Nano calcium carbonate was treated with tetrabutyl titanate sol and nickel hydroxide, resulting in the formation of a new flame retardant called Ni-TiO2@CaCO3. This flame retardant was then introduced into epoxy resin to improve its flame retardancy and thermal stability. The addition of Ni-TiO2@CaCO3 significantly reduced the peak heat release rate and smoke production rate of the epoxy resin, and improved its degradation temperature and char residues. The flame retardancy mechanism of the Ni-TiO2@CaCO3/EP composite was thoroughly analyzed using various methods.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Materials Science, Composites
Xinming Ye, Zhiqing Han, Panpan Tian, Tong Liu, Xiangning Meng, Chengke Yuan, Wensheng Wang, Yingchun Li
Summary: Cu-Ph-POSS was synthesized by grafting Cu into Si-O-Si cage, and used to solve the problem of black smoke generated during combustion of epoxy resin (EP) in high fire safety fields. The incorporation of 2 wt% Cu-Ph-POSS into EP significantly improved thermal stability and reduced peak heat release rate (p-HRR), peak smoke production rate (p-SPR), and peak CO production rate (p-COP) by 56.8%, 44.4%, and 59.4%, respectively. The presence of polycyclic aromatic and Si-C compounds in the interior char layers effectively inhibited the release of heat, smoke, and toxic volatiles, imparting superior flame retardant and smoke suppression performances to the fabricated EP composites.
COMPOSITES COMMUNICATIONS
(2023)
Article
Polymer Science
Sihui Liu, Xiaoqing Zhang, Minglu Bu, Caihong Lei
Summary: In this study, a series of biobased epoxy oligomers were synthesized using the tatty and fusion methods, and cured resins were prepared. The results showed that these biobased epoxy oligomers exhibited high heat resistance, excellent thermal stability, and intrinsic flame retardancy.
EUROPEAN POLYMER JOURNAL
(2022)
