College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China.
College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China.
Carbohydr Polym. 2021 Feb 15;254:117461. doi: 10.1016/j.carbpol.2020.117461. Epub 2020 Dec 1.
In the work, the non-woven cellulose acetate (CA) nanofiber mats were prepared via electrospinning, and CA nanofiber were incorporated into the core layer of the high-pressure laminates (HPLs). When the concentration of CA was 16 wt%, SEM images demonstrated that the morphology of the CA nanofiber mat was the best, with an average diameter of 654±246 nm. When CA nanofiber mats were incorporated into the core layer of HPLs, the mechanical properties of the resulted HPLs composites were significantly improved. Specifically, the tensile strength and elongation at break of the nanofiber mats reinforced HPLs composites increased remarkably to 40.8 ±1.1 MPa and 27.9 ± 0.9 %, respectively, which were nearly 6 times and 4.4 times higher than those of the pure HPLs. Furthermore, the incorporation of the CA nanofiber mats also significantly improved the flame retardancy of the HPLs, which was revealed from the thermogravimetric analysis (TGA) results.
在这项工作中，通过静电纺丝制备了非织造醋酸纤维素（CA）纳米纤维垫，并将 CA 纳米纤维掺入高压层压板（HPL）的芯层中。当 CA 的浓度为 16wt%时，SEM 图像表明 CA 纳米纤维垫的形态最佳，平均直径为 654±246nm。当 CA 纳米纤维垫掺入 HPL 的芯层中时，所得 HPL 复合材料的机械性能得到显著提高。具体来说，纳米纤维垫增强 HPL 复合材料的拉伸强度和断裂伸长率分别显著提高到 40.8±1.1MPa 和 27.9±0.9%，分别是纯 HPL 的近 6 倍和 4.4 倍。此外，CA 纳米纤维垫的掺入也显著提高了 HPL 的阻燃性，这从热重分析（TGA）结果中可以看出。
