新型生物降解共聚酯的流变性能研究
Henan Science(2013)
Abstract
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。
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Key words
copolyester,rheological properties,apparent viscosity,non-Newton index,viscous flow activation energy
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