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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Tung Oil-Based Modifier Toughening Epoxy Resin by Sacrificial Bonds
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Tung Oil-Based Modifier Toughening Epoxy Resin by Sacrificial Bonds

机译：桐油基改进剂通过牺牲键增韧环氧树脂

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摘要

Sacrificial bonds are critical for the excellent toughness of many natural materials. Herein, to toughen epoxy resin, a renewable toughener (TAA) was prepared by incorporating cyano groups into tung oil, which could form sacrificial bonds by the dipole-dipole interaction and hydrogen bonds. After different contents of TAA were added into diglycidyl ether of bisphenol A, modified epoxy resins were cured by polyetherdiamine. Thermal mechanical properties, morphology, and thermostability of toughened epoxy samples were characterized. Results showed a significant improvement of toughness, and specifically, impact strength, elongation at break, and toughness were able to reach 76.7 kJ.m(-2), 25.0%, and 7.6 MJ.m(-3), respectively (neat epoxy resin: 21.1 kJ.m(-2), 5.7%, and 3.1 MJ.m(-3)). Besides, by contrast with two other tougheners, which were uneasy to form sacrificial bonds, results indicated sacrificial bonds were critical in the toughening process. Also the toughening effect of TAA is better than that of many commercial tougheners, which reflects its broad potential application.
机译：牺牲键对许多天然材料的优异韧性至关重要。在此，通过将氰基组掺入桐油中来制备可再生增韧剂（TAA），该桐油可以通过偶极 - 偶极相互作用和氢键形成牺牲键。在将TaA的不同内容物中加入到双酚A的二缩水甘油醚中，通过聚醚二胺固化改性的环氧树脂。表征了钢化环氧样品的热力学性能，形态和热稳定性。结果表明，韧性的显着改善，具体地，冲击强度，突破伸长，韧性分别能够达到76.7kJ.m（-2），25.0％和7.6mJ.mm（-3）（整洁环氧树脂）树脂：21.1kJ.m（-2），5.7％和3.1 mJ.m（-3））。此外，与另外两种更具不安的形成牺牲键对比，结果表明牺牲键在增韧过程中至关重要。而且TAA的增韧效果比许多商业增韧剂的增韧效果更好，这反映了其广泛的潜在应用。

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  • 来源
  • 作者

    Xiao Laihui; Huang Jinrui; Wang Yigang; Chen Jie; Liu Zengshe; Nie Xiaoan;

  • 作者单位

    Chinese Acad Forestry Key Lab Biomass Energy &

    Mat 16 Suojin Wucun Nanjing 210042 Jiangsu Peoples R China;

    Chinese Acad Forestry Key Lab Biomass Energy &

    Mat 16 Suojin Wucun Nanjing 210042 Jiangsu Peoples R China;

    Chinese Acad Forestry Key Lab Biomass Energy &

    Mat 16 Suojin Wucun Nanjing 210042 Jiangsu Peoples R China;

    Chinese Acad Forestry Key Lab Biomass Energy &

    Mat 16 Suojin Wucun Nanjing 210042 Jiangsu Peoples R China;

    ARS USDA Natl Ctr Agr Utilizat Res Biooils Res Unit 1815 N Univ St Peoria IL 61604 USA;

    Chinese Acad Forestry Key Lab Biomass Energy &

    Mat 16 Suojin Wucun Nanjing 210042 Jiangsu Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学工业;
  • 关键词

    Sacrificial bond; Tung oil; Toughness; Epoxy resin; Renewable;

    机译：牺牲键;桐油;韧性;环氧树脂;可再生;

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