Agency: NSF | Branch: Standard Grant | Program: | Phase: | Award Amount: 710.22K | Year: 2012
This Small Business Innovation Research (SBIR) Phase II project aims to develop a chromate- and phosphate-free metal surface pre-treatment product that reduces cost, and provides significant environmental and health benefits. Iron and zinc phosphate chemicals are currently widely used in surface treatment processes, which require from 7 to 10 process steps, consume energy to heat treatment baths, and produce a large quantity of waste that must be treated. This adds cost, and results in phosphate discharge to the environment. Based on the Phase I project, a chromate- and phosphate-free pre-treatment chemical will be further developed in this project. This chemical reduces the number of pre-treatment process to less than 5 steps, can be used at ambient temperature, and produces 90% less waste. It is expected to demonstrate enhanced performance in corrosion protection and paint adhesion over similar products.
The broader commercial impacts of this project will be to dramatically reduce cost, complexity and negative environmental impact of metal surface pretreatment in manufacturing processes without compromising performance. Potential applications will be in automobile, aerospace, steel (coil coatings), consumer electronics, appliance, and many other industries. An important societal impact will be the better protection to workers in plants, as this process is not toxic and does not require elaborate waste disposal procedures. This project will also enhance the scientific understanding of mechanisms by which pretreatments contribute to the protection of metals.
Agency: National Science Foundation | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 149.25K | Year: 2011
This Small Business Innovation Research (SBIR) Phase I project aims to develop a pre-paint treatment product without using chromates and phosphates for applications in metal-finishing industries. Chromates and phosphates are still widely used in pre-paint treatments, but are environmentally undesirable. Replacements have been proposed and implemented, e.g., in the coil coating industry, but such systems are less robust and require tighter control of processing conditions. Other systems, such as silanes, need to dry and cure prior to painting. Such treatments cannot be used under a cathodic electrocoated paint. In this project, a product that can be electrocoated within 2 minutes after the pretreatment will be developed. The performance is expected to be as well as chromates or phosphates on a range of different metals. The interactions between silanes and the additions, as well as the structure and properties of the films will be studied. The anticipated results will be a number of environmentally-compliant metal pretreatments that can be electrocoated. The broader/commercial impact of this project will be the potential to eliminate chromates and phosphates in pre-paint treatments without the loss of performance. The potential applications will be in automotive manufacturing, aerospace, steel industry (coil coatings), consumer electronics, appliance industry and many other industries where electrocoating is used for painting. An important societal impact will be the better protection to workers in plants, as this process is not toxic and will not require elaborate waste disposal procedures. This project will also enhance the scientific understanding of the mechanisms by which pretreatments contribute to the protection of metals.
Agency: Department of Defense | Branch: Missile Defense Agency | Program: STTR | Phase: Phase I | Award Amount: 99.50K | Year: 2014
The goal of this proposal is to demonstrate the feasibility of novel surface preparation methods that are easier to apply on metal substrates in various field environments while still enhancing the corrosion protective performance of topcoats. This is made possible by the characteristics of a patented pretreatment technology developed at Ecosil that can be spray or immersion applied. This novel pretreatment utilizes special silanes and water-soluble inorganic compounds to form a nano-structured hybrid pretreatment coating that can greatly enhance the paint adhesion of metal substrates. In addition, the hybrid pretreatment is compatible with both water and organic solvents. In this proposed work, we will make use of this unique characteristic to mix the pretreatment solution with cleaning agents such as water and organic solvents to form 2-in-1 cleaning-pretreatment systems. This effort would significantly simplify standard multi-step surface preparation procedures, and would make the surface preparation more field-friendly. Approved for Public Release 14-MDA-7979 (16 September14).
University of Cincinnati and ECOSIL Technologies LLC | Date: 2010-07-27
Compositions and methods for treating metal substrates and/or bonding metal substrates to polymeric materials, such as rubber, are provided. The compositions include at least one substantially hydrolyzed amino silane and at least one substantially hydrolyzed sulfur-containing silane Optionally, the compositions include a nano-size particulate material. The compositions provide coatings on metal substrates for protecting the metal from corrosion and for adhering rubber-like polymeric compositions to the metal with polymer-to-metal vulcanization conditions less dependent on the coating thickness, and with use of less coating materials.
Xue D.,University of Cincinnati |
Xue D.,ECOSIL Technologies LLC |
Van Ooij W.J.,University of Cincinnati |
Van Ooij W.J.,ECOSIL Technologies LLC
Progress in Organic Coatings | Year: 2013
A water-based epoxy-resin-ester modified bis-[tri-ethoxy-silyl] ethane (BTSE) organosilane coated by electro-deposition was tried on hot-dipped galvanized (HDG) steel for corrosion protection. Various resin ratios were tested with different electro-deposition cathodic currents. FTIR showed a more cross-linked siloxane network (SiOSi) by electro-deposition than by immersion. AFM, SEM, EDX examined the morphology and interface between the coating and substrate. Performance tests of salt spray test (SST), electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization showed the corrosion resistance of BTSE-resin film was dramatically increased by electro-deposition. A corrosion protection morphology was proposed according to the results in this work. © 2013 Elsevier B.V. Source