Please wait.'

Page is loading'


Home  > Raw materials & technologies  > Raw materials  > Coatings binders  > Silane modified nano ZnO effects UV degrad...

Sunday, 15 September 2019
pdf
Raw materials & technologies, Raw materials, Coatings binders

Silane modified nano ZnO effects UV degradation of polyurethane coatings

Friday, 19 December 2014

Nanosized ZnO modified by 2-aminoethyl-3-aminopropyltrimethoxysilane (APS) was prepared using the precipitation method.

The influence of modified nano ZnO on UV degradation of PU coating was studied. Source: BASF

The influence of modified nano ZnO on UV degradation of PU coating was studied. Source: BASF

Modified nano ZnO by silane (ZnO-APS) was characterised by XRD, SEM, TEM and UV-vis measurements. The degradation of the polyurethane coating, the polyurethane coatings containing 0.1wt% nano ZnO and the polyurethane coatings containing nano ZnO-APS at two concentrations (0.1 and 0.5wt%) during QUV test was evaluated by gloss measurement and electrochemical impedance spectroscopy.

Modified nano ZnO enhanced UV resistance of PU coating

The coating surface after QUV test was observed with SEM. The results show that nano ZnO-APS has spherical structure with particle size around 10-15 nm. Nano ZnO improved the UV resistance of the PU coating and surface treatment by APS enhanced the effect of nano ZnO. The presence of nano ZnO-APS at 0.1 wt% concentration significantly improved the UV resistance of polyurethane coating.

The study is published in: Progress in Organic Coatings, Volume 79, February 2015, Pages 68-74.

top of page
Comments (0)
Add Comment

Post comment

You are not logged in

register