PET/PA6共混相容性研究  

THE STUDY ON COMPATIBILITY OF PET/PA6 BLENDING

作　　者：林镇秒 叶海先 陈欣 谌继宗 李细林 严玉蓉[1] 

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510640 [2]广东新会美达锦纶股份有限公司,广东江门529100

出　　处：《化纤与纺织技术》2016年第1期1-4,共4页Chemical Fiber & Textile Technology

摘　　要：采用转矩流变仪制备了聚对苯二甲酸乙二醇酯(PET)/聚酰胺(PA6)重量比为80/20共混体系,通过DSC、SEM、XRD等测试研究了共混体系的相容性。研究结果表明,PA6作为分散相,随机分布在连续相PET中,为"海-岛"状分散结构。PET/PA6共混体系DSC曲线中两次升温过程中均出现两个熔融峰(T_(M1)/T_(M2);T_(M3)/T_(M4)),且T_(M3)<T_(M1),T_(M4)<T_(M2),说明该体系为热力学不相容。PA6分散形态不均匀,二者相容性差;共混过程中两组分各自结晶且相互影响,出现结晶相分离,PA6起到异相成核的作用,整体结晶度有所下降。Described the use of a torque rheometer to prepare PET/polyamide 6 blending system with weight ratios 80/20, studied the blending compatibility by the methods of DSC, SEM, XRD, etc. Results showed that PA6 was distributed in the PET continuous phase randomly in a ＂sea-island＂ distribution structure as dispersed phase. The compatibility of PET/PA6 was not good. Two melting peaks（T_（M1）/T_（M2）; T_（M4）/T_（M3）） and T_（M3）〈T_（M1）, T_（M4）〈T_（M2）, it proved the poor compatibility of the system. The PA6 and PET phases crystallized respectively and influenced each other during the blending process, resulting in crystalline phase separation. PA6 acted as a heterogeneous nucleation in PET/PA6 blending system. The crystallization degree of the blending system was lower than that of crystallization degree of pure PET and PA6.

关 键 词：聚酰胺 聚对苯二甲酸乙二醇酯 共混 相容性 结晶 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]