Self-healing polymers and composites based on thermal activation

被引:4
作者
Wang, Ying [1 ]
Bolanos, Ed [2 ]
Wudl, Fred [3 ]
Hahn, Thomas [1 ,3 ]
Kwok, Nathan [1 ]
机构
[1] Univ Calif Los Angeles, Dept Mech & Aerosp Engn, 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
来源
BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL AND COMPOSITE MATERIALS 2007 | 2007年 / 6526卷
关键词
self-healing; shape memory; composite; polymer; microcracks; resistance heating;
D O I
10.1117/12.715507
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Structural polymer composites are susceptible to premature failure in the form of microcracks in the matrix. Although benign initially when they form, these matrix cracks tend to coalesce and lead in service to critical damage modes such as ply delamination. The matrix cracks are difficult to detect and almost impossible to repair because they form inside the composite laminate. Therefore, polymers with self-healing capability would provide a promising potential to minimize maintenance costs while extending the service lifetime of composite structures. In this paper we report on a group of polymers and their composites which exhibit mendable property upon heating. The failure and heating mechanisms of the polymers involve Diels-Alder (DA) and retro-Diels-Alder (RDA) reactions on the polymer back-bone chain, which are thermally reversible reactions requiring no catalyst. The polymers exhibited good healing property in bulk form. Composite panels were prepared by sandwiching the monomers between carbon fiber fabric layers and cured in autoclave. Microcracks were induced on the resin-rich surface of composite with Instron machine at room temperature by holding at 1% strain for I min. The healing ability of the composite was also demonstrated by the disappearance of microcracks after heating. In addition to the self-healing ability, the polymers and composites also exhibited shape memory property. These unique properties may provide the material multi-functional applications. Resistance heating of traditional composites and its applicability in self-healing composites is also studied to lay groundwork for a fully integrated self-healing composite.
引用
收藏
页数:12
相关论文
共 22 条
[1]   In situ detection of damage in CFRP laminates by electrical resistance measurements [J].
Abry, JC ;
Bochard, S ;
Chateauminois, A ;
Salvia, M ;
Giraud, G .
COMPOSITES SCIENCE AND TECHNOLOGY, 1999, 59 (06) :925-935
[2]   A smart repair system for polymer matrix composites [J].
Bleay, SM ;
Loader, CB ;
Hawyes, VJ ;
Humberstone, L ;
Curtis, PT .
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2001, 32 (12) :1767-1776
[3]   Microcapsule induced toughening in a self-healing polymer composite [J].
Brown, EN ;
White, SR ;
Sottos, NR .
JOURNAL OF MATERIALS SCIENCE, 2004, 39 (05) :1703-1710
[4]   Fracture testing of a self-healing polymer composite [J].
E. N. Brown ;
N. R. Sottos ;
S. R. White .
Experimental Mechanics, 2002, 42 (4) :372-379
[5]   THERMALLY REVERSIBLE CROSS-LINKING OF POLYSTYRENE VIA THE FURAN-MALEIMIDE DIELS-ALDER REACTION [J].
CANARY, SA ;
STEVENS, MP .
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 1992, 30 (08) :1755-1760
[6]   A thermally re-mendable cross-linked polymeric material [J].
Chen, XX ;
Dam, MA ;
Ono, K ;
Mal, A ;
Shen, HB ;
Nutt, SR ;
Sheran, K ;
Wudl, F .
SCIENCE, 2002, 295 (5560) :1698-1702
[7]   Three-part methylmethacrylate adhesive system as an internal delivery system for smart responsive concrete [J].
Dry, C ;
McMillan, W .
SMART MATERIALS & STRUCTURES, 1996, 5 (03) :297-300
[8]   Procedures developed for self-repair of polymer matrix composite materials [J].
Dry, C .
COMPOSITE STRUCTURES, 1996, 35 (03) :263-269
[9]   Three designs for the internal release of sealants, adhesives, and waterproofing chemicals into concrete to reduce permeability [J].
Dry, CM .
CEMENT AND CONCRETE RESEARCH, 2000, 30 (12) :1969-1977
[10]   Application of the Diels-Alder reaction to polymers bearing furan moieties. 2. Diels-Alder and retro-Diels-Alder reactions involving furan rings in some styrene copolymers [J].
Gousse, C ;
Gandini, A ;
Hodge, P .
MACROMOLECULES, 1998, 31 (02) :314-321