河南科学
河南科學
하남과학
HENAN SCIENCE
2013年
12期
2143-2145
,共3页
王晓慧%冯伟杰%华成武%石艳%尚丙兰
王曉慧%馮偉傑%華成武%石豔%尚丙蘭
왕효혜%풍위걸%화성무%석염%상병란
共聚酯%流变性%特性黏度%非牛顿指数%黏流活化能
共聚酯%流變性%特性黏度%非牛頓指數%黏流活化能
공취지%류변성%특성점도%비우돈지수%점류활화능
copolyester%rheological properties%apparent viscosity%non-Newton index%viscous flow activation energy
采用毛细管流变仪研究了生物降解共聚酯聚对苯二甲酸丁二醇/己二酸丁二醇/对苯二甲酸乙二醇/己二酸乙二醇共聚酯(PBATE)的流变性能。结果表明:PBATE共聚酯属于假塑性流体;在一定的剪切速率下,共聚酯PBATE的表观黏度随着温度的升高而下降;随着剪切速率的提高,PBATE共聚酯的表观黏度对剪切速率的依赖性较强,而对温度变化的敏感性却降低。
採用毛細管流變儀研究瞭生物降解共聚酯聚對苯二甲痠丁二醇/己二痠丁二醇/對苯二甲痠乙二醇/己二痠乙二醇共聚酯(PBATE)的流變性能。結果錶明:PBATE共聚酯屬于假塑性流體;在一定的剪切速率下,共聚酯PBATE的錶觀黏度隨著溫度的升高而下降;隨著剪切速率的提高,PBATE共聚酯的錶觀黏度對剪切速率的依賴性較彊,而對溫度變化的敏感性卻降低。
채용모세관류변의연구료생물강해공취지취대분이갑산정이순/기이산정이순/대분이갑산을이순/기이산을이순공취지(PBATE)적류변성능。결과표명:PBATE공취지속우가소성류체;재일정적전절속솔하,공취지PBATE적표관점도수착온도적승고이하강;수착전절속솔적제고,PBATE공취지적표관점도대전절속솔적의뢰성교강,이대온도변화적민감성각강저。
The rheological properties of PBATE copolyester were studied with capillary rheometer. The result showed that PBATE copolyester was a typical pseudoplastic fluid;at a certain shear rate,the apparent viscosity of copolyester declined as the temperature increased;the dependence of the apparent viscosity on shear rate increased with the increasing of shear rate,whereas the temperature sensitivity decreased.