同步辐射小角X射线散射研究PA6/PP-g-MAH共混体系的纳米结构  

Study on the Nanostructure of PA6/PP-g-MAH Blend System by Synchrotron Radiation Small Angle X-ray Scattering

作　　者：刘瑶 王影[1] 史颖 刘立志 宋立新[1,2] LIU Yao;WANG Ying;SHI Ying;LIU Li-zhi;SONG Li-xin(Advanced Manufacturing Institute of Polymer Industry,Shenyang University of Chemical Technology,Shenyang 110142,China;College of Materials Science and Engineering,Shengyang University of ChemicalTechnology,Shenyang 110142,China)

机构地区：[1]沈阳化工大学高分子产业高端制造研究院,辽宁沈阳110142 [2]沈阳化工大学材料科学与工程学院,辽宁沈阳110142

出　　处：《塑料科技》2021年第3期12-15,共4页Plastics Science and Technology

基　　金：辽宁省攀登学者项目;辽宁省教育厅青年科技人才“育苗”项目(LQ2020007)。

摘　　要：通过对PA6/PP-g-MAH(1:1)共混体系进行同步辐射小角X射线散射的降温原位实验及非等温热力学研究,深入分析了降温结晶过程中二组分的相互作用。结果表明:PP-g-MAH能够进入PA6相区,阻碍PA6结晶,并在PA6结晶后进入PA6非晶区中增大了PA6片晶的长周期。同时,已结晶的PA6对PP-g-MAH的结晶起到成核作用,提升了PP的结晶温度。从材料热力学行为及相区微观结构上可以看出,MAH接枝后的PP能够较好地进入PA6相区之中,增加了二组分的相容性,但降低了两组分的结晶度,使PA6晶体变小,耐温性能下降。By performing synchrotron radiation small-angle X-ray scattering of the PA6/PP-g-MAH(1∶1)blend system in situ experiments and non-isothermal thermodynamics,the interaction of the two components in the cooling crystallization process is deeply analyzed.The results show that PP-g-MAH can enter the PA6 phase region,hinder the crystallization of PA6,and enter the amorphous region of PA6 after the crystallization of PA6,which increases the long period of PA6 lamellae.At the same time,the crystallized PA6 plays a nucleation effect on the crystallization of PP-g-MAH,which increases the crystallization temperature of PP.From the thermodynamic behavior of the material and the microstructure of the phase zone,it can be seen that the PP grafted with MAH can better enter the PA6 phase zone,increasing the compatibility of the two components,but reducing the crystallinity of the two components,Make the PA6 crystal smaller and lower the temperature resistance.

关 键 词：PP-G-MAH PA6 相容性 结晶行为 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]