文献类型：期刊文献

英文题名：Viscoelasticity of a vitrified hindered phenol compound during thermal annealing

作者：Cao, Yuanyi[1]; Li, Qiuying[1]; Zhang, Liang[1]; Wu, Guozhang[1]; Wu, Chifei[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2007

卷号：353

期号：44-46

起止页码：4232

外文期刊名：JOURNAL OF NON-CRYSTALLINE SOLIDS

收录：;EI(收录号：20074210870661);WOS:【SCI-EXPANDED(收录号:WOS:000250971900035)】；

语种：英文

外文关键词：crystallization; crystal growth; nucleation; thermal properties; calorimetry; thermodynamics; viscosity and relaxation; viscoelasticity

摘要：The viscoelasticity of vitrified 3,9-bis{1,1-dimethyl-2[beta-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy]ethyl}-2, 4, 8, 10-tetraoxaspiro [5,5]-undecane (abbreviated as AO-80) during the annealing process was investigated by DMA under the solid shearing model for the first time. The results showed that vitrified AO-80 obtained by quenching from its melting state has super-high damping properties (tan delta > 26), which are much higher than any polymer materials (tan delta < 3). Moreover, the vitrified AO-80 annealed at 80 degrees C under different annealing time has different aggregate structure, resulting in the variation of its viscoelasticity. With the increasing of annealing time the peak value of tan 6 decreased, but still higher than any other polymers. These results also provided the evidences of the damping properties improvement of polymer composites added AO-80. (C) 2007 Elsevier B.V. All rights reserved.