Session VI: Functional Coatings
Chair: Kevin R. Lassila, Ph.D., Director of Technology, BYK USA Inc.Tuesday Morning 9:00 a.m. – 12:30 p.m.
Breakout Room 217 C/D
New built-in functionalities are at the forefront of current coatings development. The market potential is immense and new application areas will open up new vistas. This session will provide an overview of several research and development activities in different fields, e.g. bio-engineered smart additives, silver antimicrobial systems, IR reflective coatings, sol-gel nanostructured coatings applications, and new intumescent coatings contributing effective insulation and a heat shield for the subsurface. | ||
6.1 9:00 – 9:30 a.m. Letting Mother Nature Tackle the Dirty Work: The Future of Coatings Additives James Rawlins*, C. Steven McDaniel, Melinda Wales; University of Southern Mississippi Biological molecules such as enzymes and peptides have traditionally been viewed as functionally restricted to very narrow environmental conditions. Increased levels of understanding have led to the development of innovative, bio-engineered ‘smart’ additives for paints and coatings. The presentation will focus on three areas: (1) a summary of the bio-engineered additive performance in environmentally-benign, self-decontaminating coating systems specifically capable of catalytically decontaminating chemical and biological agents on surfaces; (2) the performance of an engineered peptide developed for environmentally friendly control over microbial growth; and (3) the results from a fundamental investigation of the variables influencing enzyme activity, kinetics, and functionality in functional films. | ||
| 6.2 9:30 – 10:00 a.m. New Silver Based Antimicrobial Systems for Hygiene Coatings Cezanne Vielkanowitz*, Uwe Falk, Clariant Corporation In hospitals, the evolution of penicillin resistant bacteria like MRSA are becoming a very serious problem. Antibacterial coatings are able to assist the conventional hygienic procedures in the hospital to reduce the risk of cross contamination further by killing the bacteria at the coatings surface. Silver is one of the oldest antimicrobials, known since ancient times (Roman civilization), and one of the most safe and effective antimicrobials as well. Choosing the right silver antimicrobial system will provide antimicrobial efficacy without loosing the performance of other standard coating characteristics, including color. By using this silver technology, no further in can preservative is needed to protect a waterborne system in the liquid state against microbial attack. | ||
| 6.3 10:00 – 10:30 a.m. Evaluating Mildew Resistance of Interior Paints Lakshmi Sadasivan*, Roger Montemayor, Rohm and Haas Company Mildew resistance of interior paints has become a topic of greater interest to paint companies in recent years. They are constantly evaluating their “new and improved” formulations for various properties including hiding, staining, scrubbing, fading and mildew resistance. The test methods for measuring these properties typically are established methods such as ASTM test methods. For evaluating mildew resistance, however, there is always anxiety on which test method to follow for a more realistic assessment of paints. Methods popularly employed in coatings for testing mildewcidal properties are Military Spec 810F, ASTM D 5590 (Agar Plate method), ASTM D 3273 (Environmental Chamber Method). Some methods that are similar in principle and not used in coatings industry are ASTM C 1338, ASTM G21, and a test method from Forest Products Laboratories (FP). We selected several commercially available paints of different grades previously tested by independent lab(s) and evaluated by two agar based methods, the standard ASTM D 5590 and the Forest Products Laboratory method published in 2000. We report the comparative evaluations of the two methods and attempt to establish a correlation. 10:30 – 11:00 a.m. Networking: Refreshments & Coffee Break | ||
| 6.4 11:00 – 11:30 a.m. It's a "Cool," Cruel, World. Succeeding Through IR Reflective Coating Technology in a Challenging Marketplace David Story, BASF Corporation In a construction market being crippled by a lagging economy and concerns over rising energy costs, IR reflective coatings offer real and tangible alternatives for discerning consumers who are looking for relief in today’s global marketplace. The speaker will discuss the ‘urban heat island effect’, and provide examples of current and pending city, state, and federal legislation requiring ‘cool roofs’ in commercial and residential applications. Geographic illustrations will also be shown demonstrating the meteoric rise of LEED construction in the United States over the past 2 years, and how the USGBC’s SRI requirements supercede ENERGY STAR’s specifications, thus raising the bar for IR reflective coating manufacturers. Discriminating buyers who rightly say: ‘Show me the money’, will hear about market incentives currently being offered by major utilities for customers who build or switch to a qualifying ‘cool roof’. They will also see an example of how one school board in Georgia saved over $8000 per year in heating/cooling costs by installing a roof with an IR reflective coating. Time permitting, the speaker will introduce a new software that can predict the solar reflectivity of a coating or formula before it is color-matched. | ||
| 6.5 11:30 a.m. – 12:00 a.m. Thermal Coatings for Munitions Technology Pauline Smith, US Army Research Laboratory The U.S. Army is evaluating coatings for use on ammunition containers. An Intumescent coating system for fire and heat protection is required for packaged 60mm mortar cartridges to pass fast cook off requirements IAW MIL-STD-2105C. An intumescent coating has all the properties of ordinary paint; furthermore this coating will not sustain combustion. Consequently, it will not burn, providing a high degree of protection to the subsurface. Upon exposure to flame or heat, it immediately foams and swells, contributing an effective insulation and heat shield for the subsurface. In the event of fire, rather than contributing to the obstruction, it activates, prevents any flame spread and eliminates flashover between walls and ceilings. For this project, the coatings primarily function as a defense in case of fire and to prevent detonation on ammunition containers. | ||
| 6.6 12:00 – 12:30 p.m. The Application of Sol-Gel Coatings for Industrial Applications Robert Akid*, Heming Wang, Sheffield Hallam University, Great Britain Sol-gel coatings have shown great promise as alternatives to traditional systems. However complicated processing, limited shelf life, lack of dry film thickness, restricted methods of applying the sol-gel coating system and poor adhesion properties has restricted these coatings to specialist applications. In particular they have yet to prove themselves as potential replacements for coating metal substrates. This paper describes a number of sol-gel coating formulations that have been developed for industrial applications such as coil coatings, chromate replacement and anti-bacterial/anti-fouling, using a variety of substrates. The sol-gel coating systems are based upon an inorganic-organic silane formulation containing additives such as inhibitors, conducting polymers and in the case of anti-bacterial/fouling; containing an active biological component. The performance of these coating systems has been assessed using both electrochemical methods and field trials. This paper will discuss the potential of these hybrid coatings for industrial applications. | ||
| << Previous Session | >> Next Session |
