亚胺化法制备SMI及其对ABS耐热改性的研究

Study of SMI Synthesized by Imidization and Heat Resistant Modification of ABS

以苯乙烯-马来酸酐共聚物(SMA)和苯胺为原料,采用亚胺化法合成了苯乙烯-N-苯基马来酰亚胺共聚物(SMI)。将所制备的SMI和ABS树脂以一定比例进行熔融共混,采用DSC、万能材料测试仪和DMA等手段研究了产物的力学性能和耐热性能。结果表明,相比ABS树脂,SMI/ABS合金的耐热性能得到了显著提升,并保持了良好的力学性能。共混体系呈现出热力学稳定的均相体系。

Poly（styrene-co-N-phenylmaleimide） （SMI） was synthesized by imidization of poly（styrene- co-maleic anhydride） （SMA） with aniline. The mechanical properties and heat resistance of the SMI/ABS alloy made by melt blending were investigated by universal testing machine, differential scanning calorimetry （DSC） and dynamic thermomechanical analysis （DMA）, etc. Compared with ABS, the heat resistance of the SMI/ABS alloy improved significantly, while the mechanical properties maintained. Meanwhile, the alloy showed a thermodynamically stable homogeneous feature.