Fracture behaviour of a self-healing microcapsule-loaded epoxy system
The effect of temperature on the fracture behaviour of a microcapsule-loaded epoxy matrix was investigated. Microencapsulated epoxy and mercaptan-derivative healing agents were incorporated into an epoxy matrix to produce a polymer composite capable of self-healing. Maximum fracture loads were measu...
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| Format: | Article |
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| Language: | English |
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Budapest University of Technology and Economics
2011-03-01
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| Series: | eXPRESS Polymer Letters |
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| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0001831&mi=cd |
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| collection | DOAJ |
| description | The effect of temperature on the fracture behaviour of a microcapsule-loaded epoxy matrix was investigated. Microencapsulated epoxy and mercaptan-derivative healing agents were incorporated into an epoxy matrix to produce a polymer composite capable of self-healing. Maximum fracture loads were measured using the double-torsion method. Thermal aging at 55 and 110°C for 17 hours [hrs] was applied to heal the pre-cracked samples. The addition of microcapsules appeared to increase significantly the load carrying capacity of the epoxy after healing. Once healed, the composites achieved as much as 93–171% of its virgin maximum fracture load at 18, 55 and 110°C. The fracture behavior of the microcapsule- loaded epoxy matrix was influenced by the healing temperature. The high self-healing efficiency may be attributed to the result of the subsurface micro-crack pinning or deviation, and to a stronger microencapsulated epoxy and mercaptanderivative binder than that of the bulk epoxy. The results show that the healing temperature has a significant effect on recovery of load transferring capability after fracture. |
| format | Article |
| id | doaj-art-4506cd2e0bf442fd955090e9a7d7130a |
| institution | DOAJ |
| issn | 1788-618X |
| language | English |
| publishDate | 2011-03-01 |
| publisher | Budapest University of Technology and Economics |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj-art-4506cd2e0bf442fd955090e9a7d7130a2025-08-20T02:53:14ZengBudapest University of Technology and EconomicseXPRESS Polymer Letters1788-618X2011-03-015324625310.3144/expresspolymlett.2011.24Fracture behaviour of a self-healing microcapsule-loaded epoxy systemThe effect of temperature on the fracture behaviour of a microcapsule-loaded epoxy matrix was investigated. Microencapsulated epoxy and mercaptan-derivative healing agents were incorporated into an epoxy matrix to produce a polymer composite capable of self-healing. Maximum fracture loads were measured using the double-torsion method. Thermal aging at 55 and 110°C for 17 hours [hrs] was applied to heal the pre-cracked samples. The addition of microcapsules appeared to increase significantly the load carrying capacity of the epoxy after healing. Once healed, the composites achieved as much as 93–171% of its virgin maximum fracture load at 18, 55 and 110°C. The fracture behavior of the microcapsule- loaded epoxy matrix was influenced by the healing temperature. The high self-healing efficiency may be attributed to the result of the subsurface micro-crack pinning or deviation, and to a stronger microencapsulated epoxy and mercaptanderivative binder than that of the bulk epoxy. The results show that the healing temperature has a significant effect on recovery of load transferring capability after fracture.http://www.expresspolymlett.com/letolt.php?file=EPL-0001831&mi=cdSmart polymersPolymer compositesFractureSelf-healingMicrocapsules |
| spellingShingle | Fracture behaviour of a self-healing microcapsule-loaded epoxy system eXPRESS Polymer Letters Smart polymers Polymer composites Fracture Self-healing Microcapsules |
| title | Fracture behaviour of a self-healing microcapsule-loaded epoxy system |
| title_full | Fracture behaviour of a self-healing microcapsule-loaded epoxy system |
| title_fullStr | Fracture behaviour of a self-healing microcapsule-loaded epoxy system |
| title_full_unstemmed | Fracture behaviour of a self-healing microcapsule-loaded epoxy system |
| title_short | Fracture behaviour of a self-healing microcapsule-loaded epoxy system |
| title_sort | fracture behaviour of a self healing microcapsule loaded epoxy system |
| topic | Smart polymers Polymer composites Fracture Self-healing Microcapsules |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0001831&mi=cd |