7. Physico-chemical characteristics and durability
The aim here is to determine the bond's resistance to all kinds of agents likely to degrade it:
physical agents: heat, ageing, frost ;
chemical agents: water, acids, bases, solvents, oils, PVC plasticizers ;
bacteriological agents, molds.
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General method for all these tests
Mechanical strengths (shear, peel, tensile) are measured before and after subjecting the specimens to these physico-chemical agents, and the percentage drop in mechanical strength resulting from exposure is noted.
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Durability
Many chemical and physical reactions double in speed every 10°C or so....
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Physico-chemical characteristics and durability
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