DSC, WAXD and POM were performed on the structures and morphology of a blend system being composed of PET, PEN and nucleating agent(DBS). It is concluded that the crystallization of the blends is dependent on the cont...DSC, WAXD and POM were performed on the structures and morphology of a blend system being composed of PET, PEN and nucleating agent(DBS). It is concluded that the crystallization of the blends is dependent on the contents of PET and the nuclenting agent, which affect the morphology of the blends. Under certain conditions, the blends show a complex extinction pattern, with the black cross extinction accompanying black homocentric zone and fireworks scattering form, rather than that of the common spherulite.展开更多
通过NDC与EG酯交换反应合成中间体2,6-萘二甲酸乙二醇酯(BHEN),采用正交实验设计方法,研究了BHEN缩聚反应合成PEN的影响因素,筛选出醋酸锌为反应催化剂、位阻酚1010为抗氧剂;并确定了其反应温度为295℃;每摩尔BHEN用催化剂的量为4×...通过NDC与EG酯交换反应合成中间体2,6-萘二甲酸乙二醇酯(BHEN),采用正交实验设计方法,研究了BHEN缩聚反应合成PEN的影响因素,筛选出醋酸锌为反应催化剂、位阻酚1010为抗氧剂;并确定了其反应温度为295℃;每摩尔BHEN用催化剂的量为4×10-4mol,反应时间为180 m in;每摩尔BHEN用抗氧剂的量为1×10-5mol.展开更多
文摘DSC, WAXD and POM were performed on the structures and morphology of a blend system being composed of PET, PEN and nucleating agent(DBS). It is concluded that the crystallization of the blends is dependent on the contents of PET and the nuclenting agent, which affect the morphology of the blends. Under certain conditions, the blends show a complex extinction pattern, with the black cross extinction accompanying black homocentric zone and fireworks scattering form, rather than that of the common spherulite.
文摘通过NDC与EG酯交换反应合成中间体2,6-萘二甲酸乙二醇酯(BHEN),采用正交实验设计方法,研究了BHEN缩聚反应合成PEN的影响因素,筛选出醋酸锌为反应催化剂、位阻酚1010为抗氧剂;并确定了其反应温度为295℃;每摩尔BHEN用催化剂的量为4×10-4mol,反应时间为180 m in;每摩尔BHEN用抗氧剂的量为1×10-5mol.