Enhanced performance of rosin-based epoxy composites mixed with carbon nanotubes and cork powders from oriental oak bark

编号 020026401

推送时间 20201109

研究领域 林产化工 

年份 2020 

类型 期刊 

语种 英语

标题 Enhanced performance of rosin-based epoxy composites mixed with carbon nanotubes and cork powders from oriental oak bark

来源期刊 Industrial Crops & Products

期 第264期

发表时间 20201101

关键词 Rosin;  Epoxy resin;  Carbon nanotubes;  Cork powders;  Thermal properties;  Mechanical properties; 

摘要 Rosin-based epoxy composites with high-impact toughness, tensile strength, modulus, and excellent flame retardance were prepared through a simple and effective approach. In this study, rosin-based epoxy resin (acrylopimaric diglycidyl ester, APA-ER) was synthesized from rosin, and the chemical structures of the products were determined by 1H NMR and FT-IR. The multiwalled carbon nanotubes (MWCNTs) and cork powders were introduced to the APA-ER to enhance the mechanical and thermal properties of epoxy composites. For the first time, cork powder was used to reinforce the modified rosin-based epoxy resin. Testing results of the mechanical properties indicated that the impact toughness of epoxy composite with 1.5 wt% MWCNTs and 3 wt% cork powders (100–200 mesh) had the highest value (12.34 and 12.04 kJ m?2), which was increased by 324% and 314%, respectively, compared to pure resin (2.91 kJ m?2). The composites with 1.5 wt% MWCNTs displayed better flexural and tensile performance compared to APA-ER/Cork. Moreover, the DMA, TG, and cone calorimeter results showed that APA-ER/Cork had a better performance in thermal stability and flame retardance than APA-ER/MWCNTs. Additionally, the flame retardance of rosin-based epoxy resin was further improved by adding MWCNTs and cork powder simultaneously. These results showed that the rosin-based epoxy resin could be toughened and strengthened effectively, and the thermal performance was improved by MWCNTs and cork powders. In conclusion, the value-added development of rosin and cork products was increased and applied in the field of functional materials.

服务人员 尚玮姣

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