Structural and adhesion properties of poly(ethyl 2-cyanoacrylate) post-cured at different temperatures and times

被引：4
|
作者：
Estan-Cerezo, Gabriel [1 ,2 ,3 ]
Alonso, Diego A. [2 ,3 ]
Miguel Martin-Martinez, Jose [1 ]
机构：
[1] Univ Alicante, Adhes & Adhes Lab, E-03080 Alicante, Spain
[2] Univ Alicante, Organ Chem Dept, Alicante, Spain
[3] Univ Alicante, Inst Organ Synth, Alicante, Spain
来源：
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY | 2019年 / 33卷 / 04期
关键词：
Poly(ethylcyanoacrylate); thermal post-cure; adhesion; unzipping mechanism; DSC; TGA; CYANOACRYLATE; POLYMERIZATION; DEGRADATION; ETHYL;
D O I：
10.1080/01694243.2018.1509502
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The structure and properties of poly(ethyl 2-cyanoacrylate)s (pECNs) cured at 25 degrees C during 24hours, and post-cured at different temperatures (45-90 degrees C) and times (2-6hours) were studied. Irrespective of the post-cure conditions, pECN was not fully polymerized and two different structures of different molecular weights and topographies were obtained. The post-cure decreased the shear strength values in joints made with aluminum and ethyl cyanoacrylate due to the decrease in the percentage of higher molecular weight polymeric chains and the formation of new short polymeric chains by unzipping de-polymerization mechanism, both contributed to decrease the mechanical properties. On the other hand, the post-cure changed the morphology of pECN because of nano-spheres were produced by curing at 25 degrees C which were not present after post-cure at 90 degrees C.
引用
收藏
页码：329 / 345
页数：17
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