Creative Research Center for Nanocellulose Future Composites, Department of Mechanical Engineering, Inha University, 100, Inha-ro, Michuhol-gu, Incheon 22212, South Korea.
Creative Research Center for Nanocellulose Future Composites, Department of Mechanical Engineering, Inha University, 100, Inha-ro, Michuhol-gu, Incheon 22212, South Korea.
Int J Biol Macromol. 2024 Jan;256(Pt 2):128411. doi: 10.1016/j.ijbiomac.2023.128411. Epub 2023 Nov 26.
The development of high-strength and intrinsic flame-retardant natural fiber-reinforced green composite (NFRGC) is a landmark for high-performance structural applications. This paper reports a biobased, high-performance, flame-retardant composite material based on diverse bio-resources. Tough and strong cellulose long filaments (CLFs) are combined with vanillin-derived epoxy (VDE) resin to achieve high strength and flame-retardant NFRGC. The green composite was fabricated using a simple hand lay-up and compression molding technique. The green composite showed a noteworthy increment of 100.9 % flexural strength and 346 % flexural modulus compared to the neat VDE resin. Interestingly, despite the highly flammable nature of CLF, the green composite passes a V-0 rating under the UL-94 test, indicating excellent flame-retardant characteristics. Additionally, the green composite demonstrated outstanding hydrophobicity with a water contact angle of 104.2° and good chemical stability in various acidic and organic solvents. The green composite's excellent mechanical and physical properties show its potential for high-strength and flame-retardant structural applications.
高强度和本质阻燃天然纤维增强绿色复合材料（NFRGC）的开发是高性能结构应用的一个里程碑。本文报道了一种基于多种生物资源的生物基、高性能、阻燃复合材料。坚韧而强力的纤维素长丝（CLF）与香草醛衍生的环氧树脂（VDE）结合，实现了高强度和阻燃 NFRGC。该绿色复合材料采用简单的手糊和压缩成型技术制造。与纯 VDE 树脂相比，绿色复合材料的弯曲强度显著提高了 100.9%，弯曲模量提高了 346%。有趣的是，尽管 CLF 具有高度易燃性，但绿色复合材料在 UL-94 测试中通过了 V-0 等级，表明具有优异的阻燃特性。此外，绿色复合材料还表现出出色的疏水性，水接触角为 104.2°，并且在各种酸性和有机溶剂中具有良好的化学稳定性。绿色复合材料具有优异的机械和物理性能，显示出其在高强度和阻燃结构应用中的潜力。
