CNT yarn is expected to be a good method for utilization of CNTs which have extremely high mechanical properties.In this study,we fabricate untwisted CNT yarn by drawing CNTs from vertically aligned C
Functionally graded multiwaIled carbon nanotube (MWCNT) reinforced epoxy matrix composites (FGMs) were innovated by using the centrifugal method;the aggregation of MWCNTs that occurred during the epox
Silver (Ag) nanoparticles were fabricated by chemical reduction process,and then the Ag nanoparticles were grafted onto the surface of carbon nanotubes (CNTs) to prepare hybrid nanocomposites.
The observation of a scanning electronic microscope on an adult cheek tooth shows that the tooth is a kind of natural bioceramic composite consisting of hydroxyapatite and collagen protein.
采用超声波辅助搅拌铸造的方法，制备了体积分数为1％的纳米SiCp/AZ91D镁基复合材料的大尺寸铸锭。对其不同部位的组织进行观察发现，大尺寸铸锭外侧纳米颗粒分布相对内侧更为均匀，并且，不同部位的晶粒尺寸存在显著差异，铸态复合材料外侧上部晶粒相对内侧下部晶粒更为细小。复合材料不同位置颗粒分稚情况存在较大差异，部分位置可以观察到明显的团聚现象。力学性能测试结果表明：铸态复合材料外侧中部的力学性能最优，
为提高针叶树材木质素基碳纤维的力学性能,通过熔融纺丝法制备的聚乙二醇木质素纤维先经过85℃的lHC1与C6H12N4混合水溶液化学固化lh,再在空气氛围中以一定的升温速率从室温加热至250℃氧化热稳定处理,制备得到无表面缺陷的不熔融纤维和经碳化后的碳纤维.研究表明,在化学固化过程中,由ChH12N4分解得到的甲醛分子在木质素分子中的苯环之间形成亚甲基键连接,提高了水质索分子的交联程度,并且在纤维表
Activated carbon fibers (ACF) were prepared from liquefied wood through liquefaction,melt-spinning,curing,carbonization,and stream activation.Their microstructure including crystal structure,surface m
Bamboo fiber reinforced unsaturated polyester (UPE) composites were prepared by compression molding.Effects of morphology and chemical modification of fibers on the mechanical properties and water abs
本论文对术材液化物水洗不溶微球进行了研究，利用不同洗涤工艺可制备木材液化物微球，并对其微观结构、热性能、化学结构进行了探讨和分析。结果表明，水浴温度70℃的中性水水洗工艺制备的杉木、杨木液化物微球在数量、球形度、表面致密性等方面均优于常温水水洗工艺和盐酸水溶液洗涤工艺，前者的灰份含量则低于后两者。
Different methods were used to grind rice straw (RS) to obtain the rice straw powders.The biodegradable composites were prepared with the RS and poly (lactic acid)(PLA).Mechanical properties of the bi