The Influence of Loading, Temperature and Relative Humidity on Adhesives for Canvas Lining

EasyChair Preprint 2948

Abstract

The structural restoration of canvas paintings may require the process of lining in which a secondary canvas is adhered to the backside of the damaged original painting to provide additional support. Choosing the optimum materials, e.g. the type of adhesive or the canvas, for the lining treatment is challenging. Comprehensive data on mechanical and thermal behaviour of different adhesives to enable the conservator to make informed choices for their restoration purposes is scarce. Hence, in this study, four prevalently used adhesives for lining purposes are chosen and their thermal and mechanical behaviour such as the glass transition and melting temperatures, static lap shear strength and creep resistance are compared. These four adhesives are studio formulations of animal glue-paste, wax-resin mixtures, ethylene vinyl acetate copolymer mixture (tradename: BEVA 371), and an acrylic copolymer mixture (tradename: Plextol). Thermal properties of different adhesives are characterised using differential scanning calorimetry (DSC). Lap shear and creep experiments are performed on lined canvas mock-ups using different adhesives. Furthermore, the effect of temperature (25, 35, and 45°C at a fixed relative humidity of 48%) on the creep behaviour of lined canvases is investigated. The results demonstrate the remarkable effect of temperature on the creep behaviour of lined canvases, which can be related to their thermal stability.

Keyphrases: Creep, DSC, Glue, Temperature, adhesives, lining

@booklet{EasyChair:2948,
  author    = {Hans Poulis and Kate Seymour and Yasmine Mosleh},
  title     = {The Influence of Loading, Temperature and Relative Humidity on Adhesives for Canvas Lining},
  howpublished = {EasyChair Preprint 2948},
  year      = {EasyChair, 2020}}