摘要
为了扩大秸秆的应用领域和降低碳纤维的成本,以玉米秸秆液化物为原料制备碳纤维,利用SEM、XRD、单纤维力学性能测试仪等初步揭示了秸秆液化物碳纤维在炭化过程中微结构与力学性能的变化。结果表明:随着炭化温度的增加,玉米秸秆碳纤维的内部结构和表面结构结晶趋于完善,变得密致与光洁;不同炭化温度处理的玉米秸秆液化物碳纤维都出现了较明显的(100)衍射峰;拉伸强度和弹性模量随着炭化温度的升高几乎呈线性增加,炭化温度为800℃,秸秆液化物单根纤维的拉伸强度和弹性模量分别达到86.78 MPa、7.25 GPa。
In order to expand the utilization fields of straws and decrease the costs of carbon,carbon fiber from liquefied corn straws was prepared. The microstructure and mechanical property evolution of the carbon fiber was studied by SEM,X-ray analysis and single fiber mechanical properties tester. The results showed that the internal structure and surface of carbon fibers from liquefied corn straws became denser and smoother with increasing carbonized temperature. The carbon fiber from liquefied corn straws in different carbonized temperature had a diffraction peak corresponding to the（ 100） crystal plane. The tensile strength/modulus linearly increased with increasing carbonized temperature. Then the carbon fibers were carbonized for 1 hour from a room temperature to 800℃ at heating rate 3℃/min in a stream of nitrogen,tensile strength and modulus of these single carbon fiber were 86. 78 MPa、7. 25 GPa respectively.
出处
《山东化工》
CAS
2017年第17期16-18,共3页
Shandong Chemical Industry
基金
广西自然基金重点项目(2010GXNSFD013024)
南宁市科技开发项目(201102094G)
关键词
碳纤维
秸秆液化物
炭化温度
力学性能
carbon fiber
liquefaction of corn straws
carbonized temperature
mechanical properties
