苯乙烯-双马来酰亚胺共聚物的电子束辐照合成及表征  

Synthesis and Characterization of Polybismaleimide Through Electron Beam Initiated Chemical Process

作　　者：张丽珺[1,2] 许云书[1,3,2] 

机构地区：[1]西南科技大学材料科学与工程学院,绵阳621010 [2]中国工程物理研究院核物理与化学研究所,绵阳621900 [3]湖北科技学院非动力核技术湖北省协同创新中心,咸宁437100

出　　处：《武汉理工大学学报》2014年第3期33-37,共5页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(11175163);中国工程物理研究院发展基金重点资助项目(2009A0302016)

摘　　要：以优选质量配比约为10∶1的双马来酰亚胺(BMI)前驱液与苯乙烯为原料,在超声波细胞粉碎机中均匀共混,采用束流为8.5mA的电子束引发反应,完成了BMI前驱液中聚酰胺酸的酰亚胺化,合成了苯乙烯-双马来酰亚胺共聚物。电子束辐照法具有均匀、高效和无需引发剂的显著优点。傅立叶变换红外(FT-IR)谱图分析结果表明,电子束辐照实现了酰亚胺结构的产生,并引发了BMI与苯乙烯中CC双键的自由基共聚。热分析结果表明,所制得的共聚物具有良好的热稳定性,热分解峰值温度高达452.18℃。Selected about 10% mass percentage of styrene was uniformly blended into bismaleimide （BMI） precursor in solution in the ultrasonic sound-proofing case. The acid imidization of polyamide acid and the synthesis of poly-bismaleim- ide were carried out with different dose of electron beam in a linear accelerator under the beam-current of 8.5 mA. The Fourier transform infrared spectra indicate that C =C double bonds are activated for chain reaction through electron beam irradiation and the structure of polyimide is formed. Results of TG/DTA analysis reveal the generated polymer had good thermal stability,and the thermal decomposition peak temperature reaches up to 452.18 ℃. Compared with the thermal initiation method,electron beam irradiation has advantages of efficience,uniform and anti-implosion.

关 键 词：苯乙烯-双马来酰亚胺共聚物 电子束辐照 酰亚胺化 自由基共聚 

分 类 号：O621.3[理学—有机化学]