CAJ | 학술논문

通过对CNTs/EP(CNTs为碳纳米管,EP为E54环氧树脂)二元体系进行差热(DSC)及恒温流变性能的分析,以及对以表面原位生长CNTs的碳纤维织物(CFF)为增强相、环氧树脂为基体复合材料(CNTs/CFF/EP)的密度、力学性能的分析,获得采用热压法制备含碳纳米管的CNTs/CFF/EP三元层状复合材料的合理工艺参数,并研究加压时间对复合材料性能的影响.结果表明:当预热温度为150℃、预热保温约60 min后加满压、热固化温度为195℃的条件下可制得表面无缺陷、致密度为97.3%~98%的CNTs/CFF/EP三元复合材料;原位生长CNTs的引入,可使复合材料的层间剪切强度提高52%、抗弯强度提高26%;加压时机的提前及延迟均会不同程度地降低复合材料的力学性能.
통과대CNTs/EP(CNTs위탄납미관,EP위E54배양수지)이원체계진행차열(DSC)급항온류변성능적분석,이급대이표면원위생장CNTs적탄섬유직물(CFF)위증강상、배양수지위기체복합재료(CNTs/CFF/EP)적밀도、역학성능적분석,획득채용열압법제비함탄납미관적CNTs/CFF/EP삼원층상복합재료적합리공예삼수,병연구가압시간대복합재료성능적영향.결과표명:당예열온도위150℃、예열보온약60 min후가만압、열고화온도위195℃적조건하가제득표면무결함、치밀도위97.3%~98%적CNTs/CFF/EP삼원복합재료;원위생장CNTs적인입,가사복합재료적층간전절강도제고52%、항만강도제고26%;가압시궤적제전급연지균회불동정도지강저복합재료적역학성능.
The appropriate technological parameters for the preparation of in-situ growing CNTs/CFF/EP (CNTs is carbon nanotubes, EP is E54 epoxy resin) ternary laminar composites by the hot-pressed method were obtained by the analysis of DSC characteristic curves and isothermal rheological curves of CNTs/EP binary system, together with the analysis of density and mechanical properties of CNTs/CFF/EP composite with EP matrix laminar composites reinforced by carbon fiber fabric (CFFs) with in-situ growing CNTs. The effect of the pressure time on the properties of the composites was studied. The results show that when the CNTs/CFF/EP ternary laminar composite precursors are preheated at 150 ℃ for about 60 min, which is pressure time, and then heated at 195℃ with full load on, the composite can be well molded with smooth surface with no defects and high density (97.3%?98%)? the introduction of in-situ growing CNTs can increase the interlaminar shear strength of the composites by 52%, as well as the bending strength by 26%?ahead or delay of pressure time can bring negative effects on properties of the composites to different extent.