Hydrogen Bonding-Rich Bio-Benzoxazine Resin Provides High-Performance Thermosets and Ultrahigh-Performance Composites
Hydrogen Bonding-Rich Bio-Benzoxazine Resin Provides High-Performance Thermosets and Ultrahigh-Performance Composites
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DOI：
10.1021/acssuschemeng.3c07460
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发表时间：
2024-01-17
影响因子：
8.4
通讯作者：
Zhang，Kan
中科院分区：
文献类型：
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作者：
Yang，Rui;Yang，Richie;Zhang，Kan
由于人类可持续发展的要求，利用天然可再生资源生产热固性聚合物引起了人们的极大关注。在此，我们提出了一种新型生物基热固性树脂（KAE-fa）的设计，该树脂含有可聚合的恶嗪环和衍生自可再生山奈酚和糠胺的呋喃基团。KAE-fa中丰富的分子内和分子间氢键的独特存在赋予其热潜聚合特性、长贮存期和其所得聚苯并恶嗪的优异高性能。值得注意的是，所得热固性材料聚（KAE-fa）表现出304 °C的显著高的玻璃化转变温度（Tg）、63%的令人印象深刻的提高的炭产率（在N2中）以及10.12J·g-1·K-1的非常低的热释放能力。此外，KAE-fa还被用于制造碳纤维增强复合材料[CF/poly（KAE-fa）]。采用这种新获得的高性能生物树脂作为基体，CF/poly（KAE-fa）表现出显着的性能增强。例如，与碳纤维增强的BA-a复合材料[CF/poly（BA-a）]相比，CF/poly（KAE-fa）显示出Tg、拉伸强度和杨氏模量（室温）分别增加108、28和82.7%。这些优势强调了使用可再生生物树脂开发高性能热固性材料和复合材料的巨大潜力，其关键应用范围从运输到航空航天。
Producing thermosetting polymers using natural renewable resources has attracted great attention due to the requirement of sustainable development for human beings. Herein, we represent our design of a novel biobased thermosetting resin (KAE-fa) containing a polymerizable oxazine ring and a furan group derived from renewable kaempferol and furfurylamine. The distinctive presence of rich intra- and intermolecular hydrogen bonds withinKAE-faimparts it with thermal latent polymerization characteristic, long shelf life, and exceptional high performance of its resulting polybenzoxazine. Notably, the resulting thermoset,poly(KAE-fa), demonstrates a substantially high glass transition temperature (Tg) of 304 °C, an impressively elevated char yield (in N2) of 63%, and an extraordinarily low heat release capacity of 10.12 J·g–1·K–1. In addition,KAE-fahas also been utilized to fabricate a carbon fiber-reinforced composite [CF/poly(KAE-fa)]. Employing this newly obtained high-performance bioresin as the matrix,CF/poly(KAE-fa)exhibits a remarkable property enhancement. For instance,CF/poly(KAE-fa)shows 108, 28, and 82.7% increases inTg, tensile strength, and Young’s modules (room temperature), respectively, compared with the carbon fiber-reinforced BA-a composite [CF/poly(BA-a)]. These advantages underscore the great potential of using renewable bioresins for developing both high-performance thermosets and composites with key applications spanning from transportation to aerospace.