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Glass transition temperature
The temperature (Tg) at which a solid changes from a glassy state to a rubbery state on heating. Below Tg a set adhesive is hard and glassy; above it, rubbery. A soft or tacky set adhesive picks up dust, while a hard, brittle one can crack when stressed.
Also called: Tg
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Sources cited on this page
- Adhesive Compendium for Conservation (Jane L. Down, Canadian Conservation Institute, 2015), Canadian Conservation Institute (CCI), Government of Canada (2015, catalogue number CH57-4/4-2015E-PDF (x, 256 pages)). Where: p. 21, Solid Adhesive Properties – Glass transition temperature.