Dang Baokang, Chen Yipeng, Yang Ning, Chen Bo, Sun Qingfeng
School of Engineering, Zhejiang A&F University, Hangzhou, Zhejiang Province, 311300, People's Republic of China.
Nanotechnology. 2018 May 11;29(19):195605. doi: 10.1088/1361-6528/aab243. Epub 2018 Feb 26.
Carbon fiber (CF) reinforced polyacrylamide/wood fiber composite boards are fabricated by mechanical grind-assisted hot-pressing, and are used for electromagnetic interference (EMI) shielding. CF with an average diameter of 150 nm is distributed on wood fiber, which is then encased by polyacrylamide. The CF/polyacrylamide/wood fiber (CPW) composite exhibits an optimal EMI shielding effectiveness (SE) of 41.03 dB compared to that of polyacrylamide/wood fiber composite (0.41 dB), which meets the requirements of commercial merchandise. Meanwhile, the CPW composite also shows high mechanical strength. The maximum modulus of rupture (MOR) and modulus of elasticity (MOE) of CPW composites are 39.52 MPa and 5823.15 MPa, respectively. The MOR and MOE of CPW composites increased by 38% and 96%, respectively, compared to that of polyacrylamide/wood fiber composite (28.64 and 2967.35 MPa).
采用机械研磨辅助热压法制备了碳纤维（CF）增强聚丙烯酰胺/木纤维复合板，并将其用于电磁干扰（EMI）屏蔽。平均直径为150 nm的CF分布在木纤维上，然后被聚丙烯酰胺包裹。与聚丙烯酰胺/木纤维复合材料（0.41 dB）相比，CF/聚丙烯酰胺/木纤维（CPW）复合材料表现出41.03 dB的最佳电磁干扰屏蔽效能（SE），满足商业产品的要求。同时，CPW复合材料还具有较高的机械强度。CPW复合材料的最大断裂模量（MOR）和弹性模量（MOE）分别为39.52 MPa和5823.15 MPa。与聚丙烯酰胺/木纤维复合材料（28.64和2967.35 MPa）相比，CPW复合材料的MOR和MOE分别提高了38%和96%。
