公开(公告)号：US20180022936A1

公开(公告)日：2018-01-25

申请号：US15231617

申请日：2016-08-08

Applicant: The Boeing Company

Inventor： Vijaykumar S. Ijeri ,  Om Prakash ,  Stephen P. Gaydos ,  Raghavan Subasri ,  Kalidindi Ramachandra Soma Raju ,  Dendi Sreenivas Reddy

IPC: C09D5/08 ,  B05D3/06

CPC classification number: C09D5/086 ,  B05D3/0254 ,  B05D3/067 ,  B05D7/14 ,  B05D7/572 ,  B05D7/576 ,  B05D2202/25 ,  B05D2518/12 ,  C08G77/58 ,  C09D5/08 ,  C09D183/14 ,  C23C18/122 ,  C23C18/1225 ,  C23C18/1241 ,  C23C18/1254

Abstract: An alkoxysilane is contacted with water and an inorganic acid to form a first composition. A zirconium alkoxide is contacted with an organic acid to form a second composition. One or more alkoxysilanes and an organic acid are contacted with a mixture of the first and second compositions to form a sol-gel composition, to which a photoinitiator is added. The sol-gel composition has a ratio of a number of moles of silicon to a number of moles of zirconium (nSi/nZr) ranging from about 2 to about 10. The sol-gel composition is applied on a substrate (e.g., an aluminum alloy substrate) multiple times to form multiple sol-gel layers, and at least one of the sol-gel layers is cured by UV radiation. The multiple sol-gel layers are then thermally cured.