Diego Lascano, Jaume Gomez-Caturla, David Garcia-Sanoguera, Daniel Garcia-Garcia, Juan Ivorra-Martinez
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引用次数: 0
摘要
该研究利用丙烯酸酯环氧化大豆油（AESO）和肉桂酸烯丙酯（ACIN）以及过氧化苯甲酸叔丁酯（TBPB）作为引发剂，成功开发出了热固性材料。在 110 °C 至 140 °C 之间的温度下对所开发的配方进行等温固化，结果表明，温度越高，转化过程越快。固化温度越高，转化程度越高，因此在 130 °C 下固化的样品抗折强度最高。然而，在 120 ℃ 下固化的样品由于转化程度较低，可以形成更具流动性的网状网络，因此具有更好的冲击性能。此外，形态观察也证实了这些机械性能趋势。动态热特性分析表明，低温固化材料的玻璃化转变温度发生了变化，并出现了未反应产物引起的放热反应。提高固化温度可通过增加分子量来增强热稳定性。最后，热机械分析证实了在弯曲试验和热特性分析中观察到的刚度和玻璃化转变温度的增加。
Optimizing biobased thermoset resins by incorporating cinnamon derivative into acrylated epoxidized soybean oil
The study successfully developed thermoset materials utilizing acrylate epoxidized soybean oil (AESO) and allyl cinnamate (ACIN) with tert-butyl peroxybenzoate (TBPB) as the initiator. Isothermal curing at temperatures between 110 °C to 140 °C of the developed formulations, showed that higher temperatures accelerated the conversion process. The higher curing temperature increased the degree of conversion, leading to obtain the best flexural strength for samples cured at 130 °C. However, samples cured at 120 °C exhibited better impact properties due to a lower degree of conversion, which allows for a more mobile reticular network. In addition, morphological observations confirmed these mechanical property trends. Dynamic thermal characterization revealed changes in glass transition temperature and exothermic reactions due to unreacted products appeared for materials cured at low temperature. Increasing curing temperature allowed to enhance thermal stability by increasing molecular weight. Finally, thermomechanical analysis confirmed stiffness and glass transition temperature increases observed during flexural tests and thermal characterization.
期刊介绍：
Materials and Design is a multi-disciplinary journal that publishes original research reports, review articles, and express communications. The journal focuses on studying the structure and properties of inorganic and organic materials, advancements in synthesis, processing, characterization, and testing, the design of materials and engineering systems, and their applications in technology. It aims to bring together various aspects of materials science, engineering, physics, and chemistry.
The journal explores themes ranging from materials to design and aims to reveal the connections between natural and artificial materials, as well as experiment and modeling. Manuscripts submitted to Materials and Design should contain elements of discovery and surprise, as they often contribute new insights into the architecture and function of matter.
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