以高温固化型环氧树脂HG101为基体,高强高模量碳纤维为增强材料,通过热熔浸渍法制备了具有良好物理性能和工艺性能的预浸料,采用热压罐固化成型工艺制备出高强高模量碳纤维复合材料。通过扫描电子显微镜、万能试验机对复合材料的微观形貌、力学性能进行了表征和测试。结果表明:与中模量CF1碳纤维预浸料复合材料相比,高模量CF2、CF3、CF4碳纤维复合材料0°拉伸模量分别提高28.57%、31.55%、97.62%,碳纤维强度转化率也依次提高;同时短梁强度和面内剪切强度较高,表明环氧树脂HG101与高模量碳纤维界面结合性能良好。
Prepregs with good physical and process properties were prepared by hot-melt impregnation using high-temperature curing epoxy resin HG101 as matrix and high-strength,high-modulus carbon fibers as reinforcement.The high-strength and high-modulus carbon fiber composites were prepared through autoclave curing molding process.The microscopic morphology and mechanical properties of the composites were characterized and tested by scanning electron microscope and universal testing machine.The results showed that compared with the medium modulus CF1 carbon fiber prepreg composites,the 0° tensile modulus of the high modulus CF2,CF3 and CF4 carbon fiber prepreg composites increased by 28.57%,31.55% and 97.62%,respectively,and the conversion rate of the strength of the carbon fibers was also increased sequentially.Meanwhile,the short beam strength and in-plane shear strength were higher,indicating good interfacial bonding performance between the epoxy resin HG101 and high-modulus carbon fibers.
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