双马树脂基复合材料低速冲击响应及冲击后压缩行为研究

TB332; 制备了新型聚醚砜(PES)点阵附载U3160的ESTM-fabric织物,PES附载量分别为15(ES-15),25(ES-25),35(ES-35)g/cm2.采用RTM工艺制备了ESTM-fabric织物增强双马来酰亚胺树脂(牌号:6421)基复合材料(ESTM-fabric/6421),对其进行动态力学热分析(DMTA),还进行了冲击阻抗及冲击后压缩性能研究,并利用荧光显微镜分析其增韧机理,同时研究对比了未增韧U3160织物增强6421树脂基复合材料(ES-0)的性能.DMTA分析结果显示,ES-0仅有一个源于BMI基体树脂的玻璃化转变温度(Tg),增韧后复合材料出现了两个...

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Published in材料工程 Vol. 50; no. 12; pp. 71 - 78
Main Authors 董慧民, 闫丽, 安学锋, 钱黄海, 苏正涛
Format Journal Article
LanguageChinese
Published 中国航发北京航空材料研究院,北京 100095%中航复合材料有限责任公司,北京 101300 01.12.2022
Subjects
冲击行为
树脂转移模塑(RTM)
损伤模式
损伤容限
增韧技术
Online AccessGet full text
ISSN1001-4381
DOI10.11868/j.issn.1001-4381.2021.000367

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Abstract TB332; 制备了新型聚醚砜(PES)点阵附载U3160的ESTM-fabric织物,PES附载量分别为15(ES-15),25(ES-25),35(ES-35)g/cm2.采用RTM工艺制备了ESTM-fabric织物增强双马来酰亚胺树脂(牌号:6421)基复合材料(ESTM-fabric/6421),对其进行动态力学热分析(DMTA),还进行了冲击阻抗及冲击后压缩性能研究,并利用荧光显微镜分析其增韧机理,同时研究对比了未增韧U3160织物增强6421树脂基复合材料(ES-0)的性能.DMTA分析结果显示,ES-0仅有一个源于BMI基体树脂的玻璃化转变温度(Tg),增韧后复合材料出现了两个Tg:191～195℃的松弛峰源于增韧剂PES,230～250℃的松弛峰源于BMI基体树脂.低速冲击结果显示,ES-0试样的初始损伤载荷(DTL)降低非常显著.增韧复合材料的DTL远高于ES-0试样,且与最高峰值载荷相同;随着增韧剂增多,DTL增大,冲击损伤面积减小.荧光显微结果显示:ES-0试样的冲击损伤以分层破坏为主.增韧复合材料在压头下方产生了大量层内和层间基体裂纹,且冲击背面的铺层破裂更加严重,其锥形冲击损伤范围要小于ES-0试样.ES-0试样的冲击后压缩强度(CAI)为144.66 MPa,增韧复合材料ES-15,ES-25和ES-35的CAI值分别依次增大为205.85,265.74 MPa和275.14 MPa.ES-0试样经冲击后压缩破坏后结构中出现了大量分层,结构无显著的劈裂;ES-15试样存在大量的纤维铺层劈裂及显著的基体裂纹;ES-25试样和ES-35试样以铺层剪切破坏为主,这些损伤会吸收大量能量,从而导致高的CAI值.
AbstractList TB332; 制备了新型聚醚砜(PES)点阵附载U3160的ESTM-fabric织物,PES附载量分别为15(ES-15),25(ES-25),35(ES-35)g/cm2.采用RTM工艺制备了ESTM-fabric织物增强双马来酰亚胺树脂(牌号:6421)基复合材料(ESTM-fabric/6421),对其进行动态力学热分析(DMTA),还进行了冲击阻抗及冲击后压缩性能研究,并利用荧光显微镜分析其增韧机理,同时研究对比了未增韧U3160织物增强6421树脂基复合材料(ES-0)的性能.DMTA分析结果显示,ES-0仅有一个源于BMI基体树脂的玻璃化转变温度(Tg),增韧后复合材料出现了两个Tg:191～195℃的松弛峰源于增韧剂PES,230～250℃的松弛峰源于BMI基体树脂.低速冲击结果显示,ES-0试样的初始损伤载荷(DTL)降低非常显著.增韧复合材料的DTL远高于ES-0试样,且与最高峰值载荷相同;随着增韧剂增多,DTL增大,冲击损伤面积减小.荧光显微结果显示:ES-0试样的冲击损伤以分层破坏为主.增韧复合材料在压头下方产生了大量层内和层间基体裂纹,且冲击背面的铺层破裂更加严重,其锥形冲击损伤范围要小于ES-0试样.ES-0试样的冲击后压缩强度(CAI)为144.66 MPa,增韧复合材料ES-15,ES-25和ES-35的CAI值分别依次增大为205.85,265.74 MPa和275.14 MPa.ES-0试样经冲击后压缩破坏后结构中出现了大量分层,结构无显著的劈裂;ES-15试样存在大量的纤维铺层劈裂及显著的基体裂纹;ES-25试样和ES-35试样以铺层剪切破坏为主,这些损伤会吸收大量能量,从而导致高的CAI值.
Author 董慧民
闫丽
钱黄海
安学锋
苏正涛
AuthorAffiliation 中国航发北京航空材料研究院,北京 100095%中航复合材料有限责任公司,北京 101300
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Author_FL YAN Li
SU Zhengtao
QIAN Huanghai
AN Xuefeng
DONG Huimin
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Issue 12
Keywords 冲击行为
树脂转移模塑(RTM)
损伤模式
损伤容限
增韧技术
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Snippet TB332; 制备了新型聚醚砜(PES)点阵附载U3160的ESTM-fabric织物,PES附载量分别为15(ES-15),25(ES-25),35(ES-35)g/cm2.采用RTM工艺制备了ESTM-fabric织物增强双马来酰亚胺树...
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Title 双马树脂基复合材料低速冲击响应及冲击后压缩行为研究
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