TY - JOUR
T1 - A durable coating to prevent stress corrosion effects on the surface strength of annealed glass
AU - Mariggiò, Gregorio
AU - Dalle Vacche, Sara
AU - Bongiovanni, Roberta
AU - Louter, Christian
AU - Corrado, Mauro
PY - 2021
Y1 - 2021
N2 - The durability of an innovative polymeric coating recently developed by the authors to prevent stress corrosion in annealed glass is herein examined. The coating, having functional graded properties through the thickness, is optimised to provide a very good adhesion with glass and an excellent hydrophobic behavior on the side exposed to the environment, thus creating a good barrier to humidity, which is the triggering agent for stress corrosion. Three scenarios are analysed in terms of ageing: (i) cyclic loading, accomplished by subjecting coated samples to repetitive loading; (ii) natural weathering, performed by exposing coated samples to atmospheric agents; (iii) artificial weathering, carried out by exposing coated specimens to fluorescent UV lamps, heat and water. The durability of the coating is assessed indirectly, on the base of its residual effectiveness in preventing stress corrosion, by comparing the bending strength, obtained with the coaxial double ring test, of aged coated glass specimens with that of un-coated and freshly coated specimens. The obtained results prove that the proposed formulation is almost insensitive to cyclic loading, maintains a very good performance in case of natural weathering, whereas is slightly more sensitive to artificial weathering.
AB - The durability of an innovative polymeric coating recently developed by the authors to prevent stress corrosion in annealed glass is herein examined. The coating, having functional graded properties through the thickness, is optimised to provide a very good adhesion with glass and an excellent hydrophobic behavior on the side exposed to the environment, thus creating a good barrier to humidity, which is the triggering agent for stress corrosion. Three scenarios are analysed in terms of ageing: (i) cyclic loading, accomplished by subjecting coated samples to repetitive loading; (ii) natural weathering, performed by exposing coated samples to atmospheric agents; (iii) artificial weathering, carried out by exposing coated specimens to fluorescent UV lamps, heat and water. The durability of the coating is assessed indirectly, on the base of its residual effectiveness in preventing stress corrosion, by comparing the bending strength, obtained with the coaxial double ring test, of aged coated glass specimens with that of un-coated and freshly coated specimens. The obtained results prove that the proposed formulation is almost insensitive to cyclic loading, maintains a very good performance in case of natural weathering, whereas is slightly more sensitive to artificial weathering.
KW - Annealed glass
KW - Bending strength
KW - Durability
KW - Polymeric coating
KW - Stress corrosion
UR - http://www.scopus.com/inward/record.url?scp=85115263926&partnerID=8YFLogxK
U2 - 10.1007/s40940-021-00161-x
DO - 10.1007/s40940-021-00161-x
M3 - Article
AN - SCOPUS:85115263926
SN - 2363-5142
VL - 6
SP - 449
EP - 462
JO - Glass Structures and Engineering
JF - Glass Structures and Engineering
IS - 4
ER -