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  • Open Access

    ARTICLE

    Synergistic Effect of Silicone Macromolecular Charring Agent and Ammonium Polyphosphate on Improving Flame Retardancy and Mechanical Properties of Ethylene-Butyl Acrylate Copolymer Composites

    Xuan Huo1, Bingchen Wu1, Yuanmeng Lou1, Junlin Zhu1, Cui Li1, Lili Ma1, Ye-Tang Pan2, Chuncheng Hao1,*, Xin Wen1,*

    Journal of Polymer Materials, Vol.42, No.2, pp. 517-530, 2025, DOI:10.32604/jpm.2025.065320 - 14 July 2025

    Abstract Power cables are important pieces of equipment for energy transmission, but achieving a good balance between flame retardancy and mechanical properties of cable sheaths remains a challenge. In this work, a novel intumescent flame retardant (IFR) system containing silicone-containing macromolecular charring agent (Si-MCA) and ammonium polyphosphate (APP) was designed to synergistically improve the flame retardancy and mechanical properties of ethylene-butyl acrylate copolymer (EBA) composites. The optimal mass ratio of APP/Si-MCA was 3/1 in EBA composites (EBA/APP-Si-31), corresponding to the best flame retardancy with 31.2% of limited oxygen index (LOI), V-0 rating in UL-94 vertical burning More > Graphic Abstract

    Synergistic Effect of Silicone Macromolecular Charring Agent and Ammonium Polyphosphate on Improving Flame Retardancy and Mechanical Properties of Ethylene-Butyl Acrylate Copolymer Composites

  • Open Access

    ARTICLE

    Development of Flame Retardant Composite Based on Glucose-Citric Acid-Based Resin Reinforced by Walnut Shell Powder

    Zhenzhou Wang1, Rui Luo1, Wenqing Yang1, Seng Hua Lee2,*, Wei Chen Lum3, Longjiang Liu4, Xiaojian Zhou1, Jun Zhang1,*

    Journal of Renewable Materials, Vol.13, No.6, pp. 1229-1249, 2025, DOI:10.32604/jrm.2025.02024-0073 - 23 June 2025

    Abstract Highly flame-retardant bio-based composites were prepared in this study. Firstly, glucose-citric acid (GC) resin was synthesized through the interaction of glucose and citric acid derived from agricultural and forestry sources. Polyvinyl alcohol (PVA) served as a toughening agent, whereas walnut shell powder (WSP) functioned as a filler in the formulation of a thermosetting bio-based GC-PVA-WSP (GCPW) composite with GC resin. The findings demonstrated that boric acid increased the limited oxygen index (LOI) value of GCPW to 33%, while simultaneously diminishing its total smoke production (TSP) by 99.9%, and achieving a flame retardant index (FRI) of More > Graphic Abstract

    Development of Flame Retardant Composite Based on Glucose-Citric Acid-Based Resin Reinforced by Walnut Shell Powder

  • Open Access

    ARTICLE

    Synergistic Effect of Piperazine Pyrophosphate (PAPP)/Melamine Polyphosphate (MPP)/ZnO Halogen-Free Flame Retardant System in PPC-P/PBAT Blends

    Yuxin Zheng, Ke Xu, Baicheng Zhang, Shengxin Guan, Lin Xia, Zhaoge Huang*

    Journal of Polymer Materials, Vol.42, No.1, pp. 237-253, 2025, DOI:10.32604/jpm.2025.059622 - 27 March 2025

    Abstract In this manuscript, we conveniently prepared a series of polyester-polycarbonate copolymer (PPC-P)/polybutylene adipate terephthalate (PBAT) blends that exhibit both flame-retardant properties and toughness. Piperazine pyrophosphate (PAPP), melamine phosphate (MPP) and ZnO were used as synergistic flame retardants for PPC-P/PBAT blends. The effects of synergistic flame retardants on thermal stability, combustion behavior and flame retardancy of PPC-P/PBAT blends were investigated. The results showed that when the ratio of PAPP/MPP/ZnO was 18.4:9.2:2.4, the LOI of PPC-P/PBAT composite was 42.8%, and UL-94 reached V-0 level. The results of cone calorimetry showed that the mass loss rate (MLR), the… More >

  • Open Access

    ARTICLE

    Effect of Selective Laser Sintering Polyamide-12 Powder as a Filler in Glass Fiber Reinforced Epoxy Composites

    Ravikumar Karthikeyan, Subbiah Rajkumar*, Balasundaram Ravi

    Journal of Polymer Materials, Vol.41, No.3, pp. 131-141, 2024, DOI:10.32604/jpm.2024.055989 - 30 September 2024

    Abstract In this study, the Polyamide-12 (PA-12) powdered material in the Selective Laser Sintering (SLS) process has been incorporated as the filler in the composite material to enhance its properties. The PA-12 powder has been made into a form of filament and is primarily used in the Fused Deposition Modelling (FDM) process. The PA-12 has been used with epoxy resin and glass fiber with different proportions. The characterization of materials, including the validation of the presence of PA-12 filler with epoxy, has been evidenced using Fourier Transform Infrared Spectroscopy (FTIR), Differential Scanning Calorimetry (DSC), and Thermogravimetric More >

  • Open Access

    ARTICLE

    Flame Retardant Material Based on Cellulose Scaffold Mineralized by Calcium Carbonate

    Jinshuo Wang, Lida Xing, Fulong Zhang, Chuanfu Liu*

    Journal of Renewable Materials, Vol.12, No.1, pp. 89-102, 2024, DOI:10.32604/jrm.2023.029057 - 23 January 2024

    Abstract Wood-based functional materials have developed rapidly. But the flammability significantly limits its further application. To improve the flame retardancy, the balsa wood was delignified by NaClO2 solution to create a cellulose scaffold, and then alternately immersed in CaCl2 ethanol solution and NaHCO3 aqueous solution under vacuum. The high porosity and wettability resulting from delignification benefited the following mineralization process, changing the thermal properties of balsa wood significantly. The organic-inorganic wood composite showed abundant CaCO3 spherical particles under scanning electron microscopy. The peak of the heat release rate of delignified balsa-CaCO3 was reduced by 33% compared to the native More > Graphic Abstract

    Flame Retardant Material Based on Cellulose Scaffold Mineralized by Calcium Carbonate

  • Open Access

    ARTICLE

    Selecting the Technology of Sodium Silicate Modified Poplar with the Highest Performance by Fuzzy Orthogonal Method

    Xiaoqian Bi1, Pengfei Guan1, Ping Li2,*, Yuan Zhang1, Xingong Li1, Yingfeng Zuo1,*

    Journal of Renewable Materials, Vol.11, No.5, pp. 2399-2415, 2023, DOI:10.32604/jrm.2023.026656 - 13 February 2023

    Abstract Sodium silicate modification can improve the overall performance of wood. The modification process has a great influence on the properties of modified wood. In this study, a new method was introduced to analyze the wood modification process, and the properties of modified wood were studied. Poplar wood was modified with sodium silicate by vacuum-pressure impregnation. After screening using single-factor experiments, an orthogonal experiment was carried out with solution concentration, impregnation time, impregnation pressure, and the cycle times as experimental factors. The modified poplar with the best properties was selected by fuzzy mathematics and characterized by… More > Graphic Abstract

    Selecting the Technology of Sodium Silicate Modified Poplar with the Highest Performance by Fuzzy Orthogonal Method

  • Open Access

    EDITORIAL

    Bio-Based Halogen-Free Flame Retardant Polymeric Materials

    Xin Wang*

    Journal of Renewable Materials, Vol.11, No.4, pp. 1627-1629, 2023, DOI:10.32604/jrm.2023.027379 - 01 December 2022

    Abstract This article has no abstract. More >

  • Open Access

    ARTICLE

    Phosphorus Containing Rubber Seed oil as a Flame Retardant Plasticizer for Polyvinyl Chloride

    Hongying Chu1,2,*, Huabei Li1,2, Xiaoyan Sun1, Yaowang Zhang1,2

    Journal of Renewable Materials, Vol.11, No.4, pp. 1731-1743, 2023, DOI:10.32604/jrm.2022.024160 - 01 December 2022

    Abstract The application of phthalate plasticizers has been restricted around the world due to their poor migration and potential harm to the human body. Hence, producing functional bio-based plasticizers via exploiting clean and reusable resources meets the satisfaction of current demands. In this study, flame-retardant rubber seed oil-based plasticize (FRP) was prepared via epoxidation reaction and ring opening addition reactions, which was used as a flame-resistant plasticizer for polyvinyl chloride to replace petroleum-based phthalate plasticizer. When DOP was replaced with FRP, the torque of PVC blends increased from 11.4 to 18.4 N⋅m, the LOI value increased from More > Graphic Abstract

    Phosphorus Containing Rubber Seed oil as a Flame Retardant Plasticizer for Polyvinyl Chloride

  • Open Access

    ARTICLE

    Effect of MMT on Flame Retardancy of PLA/IFR/LDH Composites

    Ping Zhang, Siyu Gan, Lin Chen*, Hao Chen, Chunhui Jia, Yingke Fu, Ying Xiong*

    Journal of Renewable Materials, Vol.10, No.11, pp. 2937-2947, 2022, DOI:10.32604/jrm.2022.019590 - 29 June 2022

    Abstract Nano filler synergistic intumescent flame retardant (IFR) system is an effective way to improve the flame retardant properties of polymer. In this study, the effects of montmorillonite (MMT) on the flame retardant properties of polylactic acid/layered double hydroxides (PLA/LDH) and PLA/IFR/LDH were investigated. The results show that both LDH and LDH/IFR can reduce the peak heat release rate (HRR) of PLA and prolong the combustion time of PLA; When a proportionate MMT is introduced into PLA/LDH and PLA/IFR/LDH systems, respectively, MMT will not only affect the degradation process of PLA composites during combustion, but also More >

  • Open Access

    ARTICLE

    Facile Synthesis of a Novel Bio-Based P-N Containing Flame Retardant for Effectively Reducing the Fire Hazards of Epoxy Resin

    Meixian Li1, Xin Hu1, Jie Yang1, Hongyu Yang1,3,*, Yao Yuan2,*

    Journal of Renewable Materials, Vol.10, No.10, pp. 2639-2654, 2022, DOI:10.32604/jrm.2022.019491 - 08 June 2022

    Abstract In this work, a bio-based flame retardant (Cy-HEDP) was synthesized from cytosine and HEDP through a facile salt-forming reaction and embedded into epoxy matrix to improve the flame retardancy and smoke suppression performance. The product Cy-HEDP was well characterized by FTIR, 1 H and 31P NMR and SEM tests. On the basis of the results, by adding 15 wt% Cy-HEDP, the EP15 can pass UL-94 V-0 rating, and the total smoke production (TSP) as well as total heat release (THR) can be decreased by 61.05% (from 22.61 to 8.7 m2 /m2 ) and 39.44% (from 103.19 to 62.50 More > Graphic Abstract

    Facile Synthesis of a Novel Bio-Based P-N Containing Flame Retardant for Effectively Reducing the Fire Hazards of Epoxy Resin

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