碳纤维/UiO66-NH2环氧复合材料的制备及其性能研究  

Study on preparation and properties of carbon fiber/UiO66-NH 2 epoxy composites

作　　者：赵敏[1] 屈晴 杨舒琪 ZHAO Min;QU Qing;YANG Shu-qi(College of Chemistry and Chemical Engineering,Shaanxi University of Science&Technology,Xi′an 710021,China)

机构地区：[1]陕西科技大学化学与化工学院,陕西西安710021

出　　处：《陕西科技大学学报》2024年第3期98-105,共8页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(52003147)。

摘　　要：本文首先合成出锆基MOF材料UiO66-NH_(2),并设计得到PA功能化的MOF材料UiO66-NH_(2)-PA,再将其分散在环氧树脂基体中,制备了性能优异的碳纤维/UiO66-NH_(2)环氧复合材料.随后,通过FT-IR、SEM、XRD对UiO66-NH_(2)以及UiO66-NH_(2)-PA进行了表征,使用万能试验机对碳纤维/UiO66-NH_(2)环氧复合材料的力学性能进行了测试.结果表明,UiO66-NH_(2)-PA被成功制备,且改性后的碳纤维复合材料的抗弯曲和抗剪切强度分别提高了26.54%和29.09%.这是因为UiO66-NH_(2)-PA中氨基和磷基的作用增强了界面强度,既提高了碳纤维/UiO66-NH_(2)环氧复合材料的储能模量,又增强了复合材料的界面结合能力,从而实现了通过共同作用以提高碳纤维、环氧复合材料力学性能的目标.In this work,firstly,the zirconium-based MOF material UiO66-NH_(2) was synthesized and designed to obtain the PA functionalized MOF material UiO66-NH_(2)-PA,which was then dispersed in an epoxy resin matrix to prepare carbon fiber/UiO66-NH_(2) epoxy composites with excellent properties.Subsequently,UiO66-NH_(2) as well as UiO66-NH_(2)-PA were characterised by FT-IR,SEM and XRD,and the mechanical properties of the carbon fiber/UiO66-NH_(2) epoxy composites were tested using a universal testing machine.The results showed that UiO66-NH_(2)-PA was successfully prepared and the bending and shear strength of the modified carbon fiber composites were increased by 26.54%and 29.09%,respectively.This was attributed to the enhanced interfacial strength by the action of amino and phosphorus groups in UiO66-NH_(2)-PA,which enhanced both the energy storage modulus of the carbon fiber/UiO66-NH_(2) epoxy composites and the interfacial bonding ability of the composites,thus achieving the goal of improving the mechanical properties of carbon fiber and epoxy composites through the joint action.

关 键 词：金属有机框架 力学性能 碳纤维环氧复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程]