Glass bonding environmental effects

Abbasi, A. and Hogg, P.J., Temperature and environmental effects on glass fibre rebar modulus, strength and interfadal bond strength with concrete, Composites Part B 26 (2005)394-404. 

To limit the effects of creep under sustained load, an adhesive possessing a glass transition temperature, Tg, well above the service temperature is required. The use of such an adhesive should also result in the improved environmental durability of the bonded assembly. 

It is generally believed that plasma treating processes provide surfaces with greater stability than chemical etch, corona, flame or other common polymeric treatment processes. Plasma-treated parts can be stored for weeks or longer in a clean, dry storage area, whereas it is normally recommended that corona- or flame-treated polymers be bonded immediately after surface preparation. Exposure to temperatures near the polymer s glass transition temperature will deteriorate any surface treatment. Once bonded, the surfaces of treated polymers are relatively stable, excluding the effects of outside environmental influences. 

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