改性双马来酰亚胺树脂预浸料性能研究  

Study on the properties of prepreg based on modified bismaleimide resin

作　　者：李金亮 高小茹 LI Jinliang;GAO Xiaoru(Harbin FRP Institute Co.,Ltd.,Harbin 150028,China)

机构地区：[1]哈尔滨玻璃钢研究院有限公司,哈尔滨150028

出　　处：《民用飞机设计与研究》2020年第1期121-124,共4页Civil Aircraft Design & Research

摘　　要：采用二烯丙基双酚A(Ortho-dially Bisphenol A,以下简称O-DABPA)对T型双马来酰亚胺(Bismaleimide,以下简称BMI)树脂进行改性,并用红外光谱(Fourier TransformInfrared,以下简称FT-IR)、差式扫描量热仪(Differential ScanningCalorimetry,以下简称DSC)对改性前后的树脂结构及固化反应进行测定,利用热熔预浸法对改性BMI树脂制备预浸料,考查了预浸料的力学性能及高温下的弯曲性能。结果表明,在175℃下二烯丙基双酚A和T型双马来酰亚胺树脂质量比为1∶1,反应时间为1 h时,改性BMI树脂制备的预浸料工艺性良好,单向板层间剪切强度为84.86 Mpa,在240℃时,弯曲强度及模量分别为1326.41 MPa和120.31 GPa,强度保留率为76.73%。Diallylbisphenol A(O-DABPA)was applied to modify the bismaleimide(BMI)resin,which the structure and curing reaction is analyzed by fourier transform infrared spectroscopy(FT-IR)and differential scanning calorimetry(DSC)respectively after modification.Prepreg is also prepared based on the modified BMI,and its machanical proerty and bending property under high temperature are investigated.For monolithic laminate made from the prepreg,the results show that the technological properties can be improved and the laminar shearing strength reaches 84.86 Mpa when the mass ratio is 1∶1 of Diallylbisphenol A to bismaleimide(BMI),and the reaction time is 1 h under 175℃;the bending strength and the modulus is 1326.41 MPa,120.31 GPa,and the strength retention rate is 76.73%respectively under 240℃.

关 键 词：双马来酰亚胺树脂 改性 力学性能 高温弯曲 

分 类 号：TQ323.7[化学工程—合成树脂塑料工业]