The properties and suitability of commercial bio-based epoxies for use in fiber-reinforced composites
The properties and suitability of commercial bio-based epoxies for use in fiber-reinforced composites
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DOI：
10.1002/app.50417
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发表时间：
2021-01-20
影响因子：
3
通讯作者：
Taylor, Ambrose C.
中科院分区：
文献类型：
--
作者：
Terry, Joseph S.;Taylor, Ambrose C.
纤维复合材料对环境的担忧促使制造商考虑使用生物基材料来替代石油衍生的环氧树脂。由于缺乏相关信息，这种替代方法受到了阻碍，因此，对市售的生物基环氧树脂体系进行了比较，测量了它们的机械性能，并与真空灌注生产的纤维复合材料进行了比较。大多数用于输液的高生物基含量树脂使用常规固化剂。生物基含量通常是使用Epicerol添加的，但也可以使用其他生物基前体。用Epicerol生产的双酚A二缩水甘油酯体系的生物基含量达到20%，但当Epicerol用作稀释剂时，其含量更高。全生物基单体可能对机械性能和玻璃化转变温度（T-g）有害，因此很少使用。最有前途的系统（28%至43%的生物基）与传统环氧树脂相比，具有良好的强度、刚度、韧性和合理的T-g。这些部分生物基环氧树脂为船舶、运动设备和风能领域的真空注入复合材料提供了一种即时的低碳替代品。
Environmental concerns about fiber composites are leading manufacturers to consider bio-based alternatives to petroleum-derived epoxies. Such a substitution is hindered by a lack of information, so commercially available bio-based epoxy systems have been compared, their mechanical properties measured, and fiber composites produced by vacuum infusion. Most high bio-based content resins for infusion use conventional curing agents. Bio-based content is generally added using Epicerol, but also other bio-based precursors. A diglycidyl ether of bisphenol A system produced using Epicerol achieves 20 % bio-based content, but achieves higher contents when Epicerol is used in diluents. Fully bio-based monomers can be deleterious to the mechanical properties and glass transition temperature (T-g), so are used sparingly. The most-promising systems (28 % to 43 % bio-based) compare well to conventional epoxies, possessing good strength, stiffness, toughness, and a reasonable T-g. These partially bio-based epoxies offer an immediate lower-carbon alternative for vacuum-infused composites in marine, sports equipment, and wind energy.