摘要
通过在聚对苯二甲酸乙二酯和聚萘二甲酸乙二酯的共混体系中加入不同种类、不同含量的热稳定剂或酯交换阻止剂 ,在 30 0℃左右 ,经不同时间的熔融共混后取样 ,再经DSC、NMR测试观察 ,发现所使用的化学试剂不能阻止酯交换反应的发生 ,酯交换反应程度与所加化学试剂的种类、含量基本无关 。
s PET/PEN melt blended samples were prepared under various processing conditions.Effect of such factors,i.e.the kind of chemical stabilizaer,the content of the stabilizer and blending time on the transesterification level in the blended samples was studied by means of nuclear magnetic resonance(NMR) spectroscopy and differential scanning calorimitry(DSC).Results indicated that the transesterification reaction was significantly inhibited by shortening the melt blending time,but the influence of both the kind and content of stabilizer on the ester change reaction was negligible.
出处
《塑料工业》
CAS
CSCD
北大核心
2001年第1期10-12,共3页
China Plastics Industry
基金
国家自然科学基金(59873003)
