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The Waterborne Symposium

Environmentally Friendly Coating Technologies

Mission Statement:

To administer the preeminent educational/technical forum in the United States directed to the science and technology of surface coatings and  to provide revenue to support and advance the School of Polymers and High Performance Materials at The University of Southern Mississippi.

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Bob T. Lin - Novel Silica Matting Agent for Polyaspartic Coatings

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Bob T. Lin - Novel Silica Matting Agent for Polyaspartic Coatings

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Bob T. Lin
Application Manager
Evonik Corporation
732-981-5247
www.acematt.com
Co-Authors: Craig A. Biesiada

 

BIO

Bob is an Applications Manager with Evonik Corporation’s Silica Business Line.  He has twelve years of coatings experience in both polymers and industrial coatings with DeSoto, Inc. and Valspar Corporation.  He has worked on the application of silica and carbon black in coatings and other industries for over twenty years.  He received his B.S. in Chemistry from University of Illinois.
 

ABSTRACT

 

As environmental pressures continue to drive more sustainable coatings, polyaspartic coatings solutions have come more into focus with low to zero VOC and excellent performance characteristics.  With broader adoption of this technology, there is now a greater need for matte finishes.  However, this coating type is very difficult to matte. 

Low to zero VOC coatings, such as polyaspartic systems have minimal film shrinkage, requiring higher levels of matting agents to obtain a matte finish.  In addition, the typical application of polyaspartic coatings, on floors or steel beams, requires higher film build.  This increases the silica loading needed for gloss reduction adversely effecting viscosity, making the coating difficult to handle.

This paper highlights a specially engineered synthetic silica matting agent ideal for matting polyaspartic systems.  This silica technology is compared to other silica matting agent types of various manufacturing processes, physical properties, and treatment chemistries.  The results provide an understanding of the effects of silica in these coatings and demonstrates the advantages of this unique matting agent technology in polyaspartic systems.    

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