PaintSquare.com
      | Connect Follow us on Twitter Like us on Facebook
About | Subscribe | Advertise
  

 

Download our FREE eResource: Specifier's Choice Guide. Get it now.

Paint and Coatings Industry News

Main News Page


Silver Loses Luster as Rust Buster

Friday, June 20, 2014

More items for Coating Materials

More items from EMEA (Europe, Middle East and Africa)

Comment | More

Silver may not always be so protective in protective coatings for some steels, researchers in Iran are reporting.

Scientists from the Institute of Color Science and Technology in Tehran have found degraded corrosion protection performance in waterborne polyurethanes containing nanoparticulate silver.

Mild steel bolts
Wikipedia / D3j4vu

Researchers studied coatings used to protect mild steel like that used for these these bolts, which were not part of the study.

The team applied waterborne polyurethane (WPU) and high-solid polyurethane (HPU) coatings containing nanoparticulate silver to mild steel. Using electrochemical impedance spectroscopy (EIS), the silver-laced coatings were compared to similar coatings without nanoparticulate silver in a salt solution

The EIS results showed degradation of the waterborne polyurethane in the presence of nanoparticulate silver.

The same was not true of the high-solid polyurethane, however. There, the inclusion of the nanoparticulate silver "revealed no significant effect on the coating resistance," the team reported.

Nanoparticulate Silver
Ferro Corp.

Both coating types tested contained nanoparticulate silver. The performance of the waterborne polyurethane was affected, while that of its high-solid counterpart was not.

Additional investigation using SEM cross-section also "showed loss of WPU coating integrity in the presence of nanoparticulate silver, while no significant effect was observed for the HPU coating," the team said.

The difference, confirmed by FTIR spectroscopy, was traced to the coatings' differing chemical structures, the scientists said.

Their research, "Effects of nanoparticulate silver on the corrosion protection performance of polyurethane coatings on mild steel in sodium chloride solution," is published in the August 2014 issue of Progress in Organic Coatings.

   

Tagged categories: Coating chemistry; Corrosion protection; Research

Comment Join the Conversation:

Sign in to our community to add your comments.

Hempel (USA) Inc.
Hempel Protective Coatings

With IMO, PSPC approved tank coatings solutions we give you tough, long lasting results that are tailored to meet your exact needs. Contact us at offshore@hempel.com today.


Sherwin-Williams
Sherwin-Williams Oil & Gas App

Our coatings and linings expertise available 24/7, allowing you to explore the best Sherwin-Williams solutions for oil refineries, shale drilling sites, and offshore. Download today!


Wasser High-Tech Coatings Inc.
Polyflex® Polyurea Linings

Polyflex ™ new Polyurea Geotextile Membrane System has been specifically engineered to protect the environment in containment applications.
www.polyflexlinings.com


Mitsubishi Gas Chemical America
Performance Amine 1,3-BAC

A highly reactive cycloaliphatic diamine offering superior performance. Reasonable cost and curing efficacy makes it suitable for all types of epoxy resin applications.


Jotun Paints Inc.
Jotachar JF750 - The Time Saving Solution

The only mesh free solution for jet fire scenarios. Jotachar saves installation time and material costs - the next generation of epoxy passive fire protection.


HoldTight Solutions Inc.
NO FLASH RUST - NO CONTAMINANTS

Our HoldTight®102 salt remover & flash rust
preventer prevents flash
rust by removing surface contaminants. Contact us
for your nearest distributor.
(800) 319.8802 sales@holdtight.com


PPG Protective and Marine Coatings Group
We Protect and Beautify the World

PPG is widely recognized as a world leader in protective and marine coatings, developing innovative, cutting-edge products and services.


Carboline Company
Fireproofing Solutions

Pyroclad® X1 Thermo-Lag® Pyrocrete® – protecting against hydrocarbon and jet fires, explosions, and cryogenic spills.


WINOA Group
W Abrasives - Surf Prep Pack

Experts in surface preparation are not working only on greens. To discover the SURF PREP PACK dedicated to experts. Visit our website, www.wabrasives.com.


Clemco International GmbH
Global engineering-trusted solutions

For more than 70 years, Clemco has provided the highest quality blast equipment with a total commitment to comfort and safety.

 
 
 
Technology Publishing

The Technology Publishing Network

The Journal of Protective Coatings & Linings (JPCL) PaintSquare
Durability + Design Paint BidTracker

 
EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About PaintSquare.com   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us
 

© Copyright 2000-2016, Technology Publishing / PaintSquare, All rights reserved
2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951; Tel 1-412-431-8300; Fax 1-412-431-5428; E-mail webmaster@paintsquare.com