国产CCF300/双马树脂层合板高温拉伸与压缩性能试验研究

Experimental study on tensile and compressive properties of domestic CCF300/bismaleimide laminates at high temperatures

对碳纤维(CCF300)/双马树脂(GW-300)复合材料层合板进行了200℃和300℃高温环境下的拉伸和压缩性能试验,研究其在不同温度环境下基本力学性能的变化。研究结果表明,由基体控制试件在高温下的拉伸强度和模量比由纤维控制试件降低的比例大;随着温度的升高,厚试件的压缩强度比薄试件的压缩强度提高幅度明显;高温下,拉伸性能保持率较高,而压缩性能保持率较低;300℃下基体控制试件和纤维控制试件的拉伸强度保持率分别达70%以上和90%以上,而厚试件和薄试件的压缩强度保持率都只略高于30%。

The tensile and compressive performance of carbon fiber（CCF300）/bismaleimide（GW-300） laminates were experimentally studied at 200℃ and 300℃.It is found that the tensile strength and modulus of the laminates controlled by the resin decrease more than those controlled by the fibers.The compressive strength of the thick laminates increases more than that of the thin laminates with temperature rising.The retention rate of tensile performance is high,while it is low for the compressive performance at high temperature.The retention rate of tensile strength of the laminates controlled by the resin and fibers are more than 70% and 90%,respectively,at 300℃,while both of the retention rate of compressive strength of thick and thin laminates are a little more than 30%.