Menu
Search
Filters
Close
Menu

09015 Study on Causes of Premature Disbonding in Epoxy/Urethane Coating System for Ships and Offshore Structures

Picture for 09015 Study on Causes of Premature Disbonding in Epoxy/Urethane Coating System for Ships and Offshor
Available for download
Product Number: 51300-09015-SG
ISBN: 09015 2009 CP
Author: Chung Seo Park, Mong Kyu Chung, Sung Mo Son,Chil S. Shin, E. S. Chung, H.I. Lee and Kwang Ki Baek
Publication Date: 2009
$0.00
$20.00
$20.00
Epoxy/urethane coating systems are widely used for weather parts of ships and offshore structures due to its excellent resistance to UV radiation as well as corrosion protection. Recently, epoxy/epoxy coating systems or epoxy/urethane coating systems have experienced lots of premature coating failure such as intercoat adhesion failure during winter and spring seasons in Korea. In this work, the root causes of premature coating failure were investigated using pH test and Fourier transform infrared spectroscopy (FT-IR) for several failed epoxy/urethane coating systems. We found that coating failure was attributed to the amine blush and urea formation by the reaction of isocyanate(- NCO) with moisture and free amine. The premature coating failure have been successfully controlled by the use of amine adduct or amide adduct hardener and the proper control of atmosphere for coating application in the winter and spring seasons.

Keywords: Intercoat adhesion failure, amine blush, FT-IR, epoxy/urethane coating system.
Epoxy/urethane coating systems are widely used for weather parts of ships and offshore structures due to its excellent resistance to UV radiation as well as corrosion protection. Recently, epoxy/epoxy coating systems or epoxy/urethane coating systems have experienced lots of premature coating failure such as intercoat adhesion failure during winter and spring seasons in Korea. In this work, the root causes of premature coating failure were investigated using pH test and Fourier transform infrared spectroscopy (FT-IR) for several failed epoxy/urethane coating systems. We found that coating failure was attributed to the amine blush and urea formation by the reaction of isocyanate(- NCO) with moisture and free amine. The premature coating failure have been successfully controlled by the use of amine adduct or amide adduct hardener and the proper control of atmosphere for coating application in the winter and spring seasons.

Keywords: Intercoat adhesion failure, amine blush, FT-IR, epoxy/urethane coating system.
Product tags
Also Purchased
Picture for 09007 Reliability on Coating Pull-off Adhesion Strength Test
Available for download

09007 Reliability on Coating Pull-off Adhesion Strength Test

Product Number: 51300-09007-SG
ISBN: 09007 2009 CP
Author: C. S. Shin, Yun Ho Baek, E. H. Song, S.M. Son, K. K. Baek and M.K. Chung
Publication Date: 2009
$20.00
Picture for 04006 Lessons Learned from Winter Season
Available for download

04006 Lessons Learned from Winter Season Application of Epoxy/Urethane Coating System for the Offshore Structure

Product Number: 51300-04006-SG
ISBN: 04006 2004 CP
Author: Cheon Kil Park, Seong Kyun Lee, Ki Hong Kim, and Ho IL Lee, Hyundai Heavy Industries Co. Ltd.
$20.00
Picture for Accelerated Offshore Coating Performance Testing
Available for download

Accelerated Offshore Coating Performance Testing

Product Number: 51317--9134-SG
ISBN: 9134 2017 CP
Author: Benjamin Chang
Publication Date: 2017
$20.00

Offshore is a very corrosive environment with a high corrosion rate. The offshore coating service life is relatively short and extremely expensive to apply maintenance coatings onsite.  A new accelerated coating corrosion test method is proposed.
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support