A thermally re-mendable cross-linked polymeric material

被引：2168
|
作者：
Chen, XX
Dam, MA
Ono, K
Mal, A
Shen, HB
Nutt, SR
Sheran, K
Wudl, F
机构：
[1] Univ Calif Los Angeles, Exot Mat Inst, Los Angeles, CA 90095 USA
[2] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA
[3] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA
[4] Univ Calif Los Angeles, Dept Mech & Aerosp Engn, Los Angeles, CA 90095 USA
[5] Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA
来源：
SCIENCE | 2002年 / 295卷 / 5560期
关键词：
D O I：
10.1126/science.1065879
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
We have developed a transparent organic polymeric material that can repeatedly mend or "re-mend" itself under mild conditions. The material is a tough solid at room temperature and below with mechanical properties equaling those of commercial epoxy resins. At temperatures above 120degreesC, approximately 30% (as determined by solid-state nuclear magnetic resonance spectroscopy) of "intermonomer" linkages disconnect but then reconnect upon cooling, This process is fully reversible and can be used to restore a fractured part of the polymer multiple times, and it does not require additional ingredients such as a catalyst, additional monomer, or special surface treatment of the fractured interface.
引用
收藏
页码：1698 / 1702
页数：5
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