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The effect of core–shell particles on the mechanical performance of epoxy resins modified with hyperbranched polymers

Published online by Cambridge University Press:  10 May 2016

Shuiping Li ,
Qing Lin  and
Chong Cui
Shuiping Li
Affiliation:
School of Materials Engineering, Yancheng Institute of Technology, Jiangsu Yancheng, 224051, People's Republic of China; and College of Materials Science and Engineering, Nanjing University of Science and Technology, Jiangsu Nanjing, 210094, People's Republic of China
Qing Lin
Affiliation:
School of Materials Engineering, Jinling Institute of Technology, Jiangsu Nanjing, 211169, People's Republic of China
Chong Cui*
Affiliation:
College of Materials Science and Engineering, Nanjing University of Science and Technology, Jiangsu Nanjing, 210094, People's Republic of China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

A novel core–shell particle that consists of epoxide-terminated hyperbranched polymer (HBP) and silica nanoparticles was incorporated into an epoxy/hydroxyl-terminated HBP blend to fabricate a high-performance epoxy thermoset. The effect of the core–shell particle content on the mechanical properties of the epoxy thermosets was investigated in detail. Results from tensile, flexural, and impact tests are provided. The impact fracture surface was studied by field emission-scanning electron microscopy. The incorporation of 2 wt% core–shell particles improved the tensile strength, percent elongation at break, flexural strength, and impact resistance of epoxy/hydroxyl-terminated HBP thermosets. Field emission-scanning electron micrographs showed that core–shell particle addition resulted in large-scale shear deformation and debonding from the epoxy matrix, and improved the epoxy resin toughness.

Keywords

compositecore–shelltoughness
Type
Articles
Information
Journal of Materials Research , Volume 31 , Issue 10 , 28 May 2016 , pp. 1393 - 1402
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Copyright
Copyright © Materials Research Society 2016 

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References

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