固化条件对苯并噁嗪树脂基材料力学性能的影响  

Effect of Curing Conditions on the Mechanical Properties of Benzoxazine Resin-Based Materials

作　　者：田杨 孙仲文 孙洁晖 朱金海 郭渊 TIAN Yang;SUN Zhong-wen;SUN Jie-hui;ZHU Jin-hai;GUO Yuan(Hiwing Materials Co.,Ltd.,Zhenjiang 212132,Jiangsu,China)

机构地区：[1]航天海鹰(镇江)特种材料有限公司,江苏镇江212132

出　　处：《合成纤维》2025年第1期70-77,共8页Synthetic Fiber in China

基　　金：江苏省科技成果转化项目(BA2018121)。

摘　　要：苯并噁嗪树脂基复合材料具备耐高温,材料热稳定性高,固化后无组分溢出等特点,被广泛用于国产C919大型客机后机身后段等高温工作区域。采用热压罐固化工艺,评价了不同固化温度、固化压力、保温时间等固化工艺条件对苯并噁嗪树脂基复合材料力学性能的影响,以便选择最优的固化工艺条件,同时评价了该材料71℃的湿热老化性能。结果表明:固化温度对材料的压缩、层间剪切强度影响较小;随着固化压力的降低,材料的压缩强度和层间剪切强度略有降低;随着保温时间的延长,压缩强度略有增加,压缩模量略有下降,层间剪切强度变化较小;相比干态层间剪切强度,71℃湿热老化条件下的层间剪切强度下降幅度在7%以内,该材料在抗湿热老化性能方面表现优异。Because of the characteristics of high temperature resistance,high thermal stability,no compo⁃nent overflow after curing,benzoxazine resin-based composites is widely used in the high temperature work⁃ing area such as the rear section of the domestic C919 large passenger aircraft.The influence of curing pro⁃cess conditions such as curing temperature,curing pressure and holding time on the mechanical properties of benzoxazine resin-based composites was evaluated by using the autoclave curing process,in order to se⁃lect the optimal curing process conditions,and the hygrothermal ageing property of the material at 71℃was also evaluated.The results show that the curing temperature has little effect on the compressive strength and interlaminar shear strength.With the decrease of curing pressure,the compressive strength and nterlaminar shear strength of the materials decrease slightly.With the increase of holding time,the com⁃pression strength increases slightly,the compression modulus decreases slightly,and the shear strength changes little.Compared with the interlaminar shear strength under the dry condition,the decrease of inter⁃laminar shear strength under the hygrothermal ageing condition of 71℃is less than 7%,so the material has excellent performance in the aspect of resistance to hygrothermal ageing property.

关 键 词：固化工艺条件 苯并噁嗪树脂基复合材料 力学性能 湿热老化性能 

分 类 号：TQ342.742[化学工程—化纤工业] TB332[一般工业技术—材料科学与工程]