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熔融挤出制备了不同有机蒙脱土(OMMT)含量的OMMT/丙烯腈-丁二烯-苯乙烯(ABS)-尼龙6(PA6)(30/70,质量比)复合材料,用透射电子显微镜(TEM)、扫描电子显微镜(SEM)等研究了OMMT在ABS-PA6共混物中的分布及其对ABS-PA6共混物形态结构与力学性能的影响。结果表明:在OMMT/ABS-PA6复合材料中,OMMT主要以剥离形态分布在PA6基体相中,少量分布在PA6与ABS两相界面处,具有明显的选择分布性;随着OMMT含量增加,ABS分散相尺寸逐渐减小且分布均匀,OMMT/ABS-PA6复合材料的强度、模量逐渐提高,当OMMT含量为7 wt%时,弯曲强度和模量分别由未加OMMT时的66.7 MPa、2.308 GPa上升至94.1 MPa、3.184 GPa,缺口冲击强度在OMMT含量为3 wt%时出现极大值3.7 kJ/m2,但总体变化不大。
OMMT / acrylonitrile - butadiene - styrene (ABS) - nylon 6 (PA6) (30/70, mass ratio) composites with different content of OMMT were prepared by melt extrusion and characterized by transmission electron microscopy (TEM) and scanning electron microscopy (SEM) were used to investigate the distribution of OMMT in ABS-PA6 blends and its effect on the morphology and mechanical properties of ABS-PA6 blends. The results showed that in OMMT / ABS-PA6 composites, OMMT mainly distributes in the matrix phase of PA6 in the form of exfoliation and distributes in the interface of PA6 and ABS at a small amount, with obvious selective distribution. With the increase of OMMT content, the content of ABS The strength and modulus of OMMT / ABS-PA6 composites gradually increase with the decreasing of dispersed phase size. The flexural strength and modulus of OMMT / ABS-PA6 composites increase from 66.7 MPa and 2.308 The GPa increased to 94.1 MPa and 3.184 GPa. The notched impact strength reached a maximum of 3.7 kJ / m2 at the OMMT content of 3 wt%, but the overall change was insignificant.