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

 

Get on-line education from the Pro Video Learning Series.

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.

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.


BASF
New resins from BASF will have metals loving water:

Excellent corrosion resistance, low VOC, high gloss, thin films basf.us/industrialcoatings
polyorders@basf.com
800-231-7868


Sherwin-Williams
Sherwin-Williams Protective & Marine Coatings

With 4,000 distribution points and 3,700+ years of experience, Sherwin-Williams delivers the products, support and expertise you need, right where you need it.


PPG Protective and Marine Coatings Group
Bringing innovation to the surface.™

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


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.


Covestro Deutschland
What keeps contractors one layer ahead when finishing their projects?

The answer: Pasquick®. Thanks to Pasquick®, one layer of coating is saved – resulting in faster workflows and earlier project finishing. Learn more.


Novatek Corporation
Novatek Corporation, Dustless Coatings Removal

Strip, clean and profile all dust free! Comply with new lead standards. Contact today: (866) 563-7800


Avalotis Corporation
Choose experience. Choose quality. Choose safety.

Avalotis Corporation has been meeting and exceeding clients’ specifications and expectations for almost 50 years. The first name in painting and protective coatings: Avalotis.


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.


Specialty Products, Inc. (SPI)
Polyurea & Polyurethane Spray Foam Training

SPI is committed to industry leading technical training for polyurea & polyurethane spray foam professionals. Attendees receive hands-on, in-depth training for using and troubleshooting plural-component equipment, spray guns, machine hoses & parts.

 
 
 
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