Chapter Fracture Toughening Mechanisms in Epoxy Adhesives

• Tác giả: Mauro Zarrelli, Aldobenedetto Zotti, Simona Zuppolini
• Ngôn ngữ: eng
• Thông tin xuất bản: InTechOpen, 2016
• Bộ sưu tập: Tài liệu truy cập mở
• ID: 241859
• Chủ đề: 1. Polymer chemistry

Tóm tắt

 Fracture toughness is generally considered as the main properties of a polymer or a polymer adhesive system for measuring the material resistance to the extension of cracks. Epoxy adhesives are generally brittle in nature
  however, the addition of a second dispersed phase could induce a remarkable increase of damage tolerance performance by an enhancement of the material fracture toughness. The fracture behavior of a filled epoxy resin is strongly affected by the dimensions, the shape, and the chemical nature of the considered filler. The chapter describes the different toughening mechanisms for polymer adhesives with special attention toward innovative nanofiller such as graphene nanoplatelets and hyperbranched polymer nanoparticles.