Application of Coatings for Complex Ship Structural Surfaces Using Electrostatics

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N65538-10-C-0043
Agency Tracking Number: N101-058-1294
Amount: $78,984.00
Phase: Phase I
Program: SBIR
Awards Year: 2010
Solicitation Year: 2010
Solicitation Topic Code: N101-058
Solicitation Number: 2010.1
Small Business Information
Vision Point Systems, Inc.
1700 Kraft Drive, Suite 2150, Blacksburg, VA, 24060
DUNS: 130391928
HUBZone Owned: Y
Woman Owned: N
Socially and Economically Disadvantaged: Y
Principal Investigator
 Gerard Bohlander
 Principal Investigator
 (703) 652-4828
 Jbohlander@visionpointsystems.com
Business Contact
 Brad Shaw
Title: President
Phone: (703) 652-4828
Email: bshaw@visionpointsystems.com
Research Institution
N/A
Abstract
The US Navy utilizes several corrosion control technologies to ensure that its ships and ship systems are protected from the harsh saltwater environment in which they operate. One of the most common corrosion control technologies utilized are barrier type coatings. These coatings act on the principle that if the key components necessary to the corrosion electro-chemical reaction are eliminated and/or limited, protection of a substrate can occur. Specifically, barrier coatings prevent oxygen, moisture, and ions from reaching the surface of the coated substrate, thus preventing corrosion. However, if a barrier coating exhibits low film thickness or holidays in the coating this prevention mechanism is compromised. Barrier coatings failures typically occur in areas that are difficult to cover due to substrate geometry such as blind areas behind T-bars and stiffeners as well as sharp corners where coatings tend to pull away during cure. To combat these known problem areas, the US Navy employs a combination of high solids, edge retentive coatings, specifications that require multiple coats (including hand applied stripe coats to complex areas), and strict quality assurance (QA) by a third party inspector. These processes increase the cost of tank preservation, and the combination of these efforts to apply barrier coatings has been considered a target area for cost reduction by the US Navy. Therefore, research and development efforts have been funded to improve the coatings technology by reducing the required number of coats and the cure time of the coating system. Both of these reductions contribute to reducing the time a contractor needs to preserve a ship board system. However, by reducing cure time and the number of coats the time and opportunity for QA checkpoints are also decreased, thereby increasing the risk of low film thickness and/or holidays in the coating system. The requirement of multiple coats and QA checkpoints for dry film thickness measurements and holiday detection are aimed at improving paint coverage on complex areas of tanks and voids. Another promising approach to providing better coverage of complex areas is the use of liquid electrostatic application technology. The liquid electrostatic application technology ensures uniform coverage of the barrier coating on complex geometries, thereby increasing the corrosion performance of the coating system.

* information listed above is at the time of submission.

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