Influence of acrylic adhesive viscosity and surface roughness on the properties of adhesive joint Articles uri icon

authors

  • PAZ, E.
  • NARBON, J.J
  • ABENOJAR BUENDIA, JUANA
  • CLEDERA, M.
  • DEL REAL ROMERO, JUAN CARLOS

publication date

  • November 2016

start page

  • 877

end page

  • 891

issue

  • 11

volume

  • 92

International Standard Serial Number (ISSN)

  • 0021-8464

Electronic International Standard Serial Number (EISSN)

  • 1545-5823

abstract

  • In adhesion, the wetting process depends on three fundamental factors: the surface topography of the adherend, the viscosity of the adhesive, and the surface energy of both. The aim of this paper is to study the influence of viscosity and surface roughness on the wetting and their effect on the bond strength. For this purpose, an acrylic adhesive with different viscosities was synthesized and some properties, such as viscosity and surface tension, were studied before adhesive curing took place. Furthermore, the contact angle and the lap-shear strength were analyzed using aluminum adherends with two different roughnesses. Scanning electron microscopy was used to determine the effect of the viscosity and the roughness on the joint interface. The results showed that the adhesive exhibits an optimal value of viscosity. Below this value, at low viscosities, the low neoprene content produces poor bond strength due to the reduced toughness of the adhesive.

keywords

  • in adhesion; the wetting process depends on three fundamental factors: the surface topography of the adherend; the viscosity of the adhesive; and the surface energy of both. the aim of this paper is to study the influence of viscosity and surface roughness on the wetting and their effect on the bond strength. for this purpose; an acrylic adhesive with different viscosities was synthesized and some properties; such as viscosity and surface tension; were studied before adhesive curing took place. furthermore; the contact angle and the lap-shear strength were analyzed using aluminum adherends with two different roughnesses. scanning electron microscopy was used to determine the effect of the viscosity and the roughness on the joint interface. the results showed that the adhesive exhibits an optimal value of viscosity. below this value; at low viscosities; the low neoprene content produces poor bond strength due to the reduced toughness of the adhesive.