Effects of crystallinity and crosslinking on the thermal and rheological properties of ethylene vinyl acetate copolymer
Effects of crystallinity and crosslinking on the thermal and rheological properties of ethylene vinyl acetate copolymer
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DOI：
10.1016/j.polymer.2005.09.080
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发表时间：
2005-11-28
期刊：
影响因子：
4.6
通讯作者：
Kim, WN
中科院分区：
文献类型：
--
作者：
Sung, YT;Kum, CK;Kim, WN
研究了交联度和结晶度对EVA热性能和流变性能的影响。在固体温度范围内(约-70~50℃)，随着VA含量的增加，EVA的储能模量降低。这一结果表明，EVA的结晶度影响了EVA的储能模量，这是因为DCP对EVA的交联性较弱。从熔融状态下不含DCP和不含DCP的EVA的复粘度研究可知，不含DCP的EVA的幂律参数介于0.39~0.50之间，而加入DCP的EVA的幂律参数介于0.03~0.12之间。在测定EVA熔融状态下的复粘度时，交联剂的存在影响了EVA与DCP的复粘度。(C)2005爱思唯尔有限公司。保留所有权利。
Effects of crosslinking and crystallinity on the properties of the thermal and rheological properties of the EVA were studied. From the Studies of storage modulus of the EVA with VA content in the solid temperature range (about -70 to 50 degrees C), the storage modulus decreased with increasing the VA content. This result suggested that the crystallinity of the EVA affected the storage modulus of the EVA because of the weak crosslinking of the EVA by DCP. From the Studies of complex viscosity of the EVA with and without DCP in the melt state, the values of the power law parameter of the EVA without DCP ranged from 0.39 to 0.50 and the EVA with DCP ranged from 0.03 to 0.12. In the measurement of the complex viscosity of the EVA in the melt state, the crosslinking affected the complex viscosity of the EVA with DCP. (c) 2005 Elsevier Ltd. All rights reserved.