Optimization of Nano-Enhanced Elastomeric Adhesives through Combined Experimental and Computational Methods

Abstract

Additions of both carbon fiber (CF) and carbon nano-tubes (CNTs) as reinforcements to polyurea (PUr) based adhesives are computationally investigated. Both CF and CNTs show an increase in stiffness. The effect of CF reinforcements on the PUr is more pronounced than the CNTs but this due to CNT loading being dramatically lower. On percent basis the CNT effect on strength was greater than the CF. Increasing hard segment content of PUr also had a positive effect on the joint strength, but a negative effect on the shear joint displacement. Finally the addition of CF reinforcements moved the performance of a PUr formulation from a Group IV adhesive into the Group III category. This paper illustrates the potential for commonly available reinforcements to be used to tailor the strength elongation characteristic of a PUr adhesive system.

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Document Details

Document Type
Technical Report
Publication Date
Aug 15, 2019
Accession Number
AD1080660

Entities

People

  • Demetrios A. Tzelepis
  • Robert Hart

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Adhesives
  • Carbon Fibers
  • Carbon Nanotubes
  • Computational Science
  • Displacement
  • Elongation
  • Engineering
  • Fibers
  • Fullerenes
  • Ground Vehicles
  • Materials
  • Materials Science
  • Materials Testing
  • Mechanics
  • Systems Engineering
  • Vehicles
  • Yield Strength

Readers

  • Brain and Cognitive Science; Experimental Psychology; Cognitive Neuroscience
  • Nanocomposite Materials Science
  • Surface Coatings Technology.