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Kansas City, MO, United States

Tuchscherer M.,Tnemec Co.
Materials Performance | Year: 2012

A newly developed test method for detecting amine blush that occurs on epoxy coatings and protective coatings is discussed. The kit, known as the Elcometer 139 Amine Blush Screen Testing Method, was developed and is based on carbamate chemistry and the cholinesterase biological reaction to the carbamate class of compounds. The test method is based on the presence of carbamate compounds and not on physical phenomena such as pH, and has field and lab applications. The sample solution, prepared with the carbamate compound present or suspected, is tested and the color is compared to the control standard. One of the few false positives that the kit could yield would be sources of carbamate compounds deposited through means other than the amine blush. The test kit does not oxidize the organophosphates, thus preventing the kit from detecting organophosphates and thereby lowering the risk of a false positive result.

Tuchscherer M.,Tnemec Co.
Materials Performance | Year: 2012

Determining if amine blush has occurred on epoxy coatings and distinguishing between amine bloom and amine blush are two problems facing protective coatings professionals. Part 1 presents definitions and the tests that have been commonly used to detect amine blush. Part 2 (September 2012 MPj will describe a newly developed test method to detect amine blush.

O'Dea V.,Tnemec Co.
Journal of Protective Coatings and Linings | Year: 2015

Concrete is inherently durable and is used extensively in both industrial and municipal waste-water construction. Portland cement can also be degraded by exposure to solution of sulfate salts. Sulfate attack occurs when soils, wastewater solutions or enclosed sewer headspaces contain sufficient sulfate levels which react with the cementitious paste of the concrete. Concrete must be assessed before and after surface preparation and prior to the application of a protective coating. Several field assessment methods are relatively easy to perform and produce qualitative or quantitative results.

Kilpatrick P.,Tnemec Co.
Materials Performance | Year: 2011

Digital photomicroscopy can be combined with the microscope and proper software for paint analysis. Review the software carefully as some third-party software will allow viewing and printing of the raw data. To help reduce the redundant entry of key words and catalog entries, verify that the software has the option of transferring or exporting the image file information. Modification through shifting or stretching of the histogram can improve the contrast and adjust the level of light. Standard operating procedures (SOP) should be written and followed for all photography and video techniques used in the laboratory. It is also essential to find a computer and software package that will handle the images that are collected without being too complex, yet still allow all the benefits of modern computing abilities.

O'Dea V.,Tnemec Co.
Journal of Protective Coatings and Linings | Year: 2012

Capital spending has not been keeping pace with the needs for wastewater infrastructure. While today's sewerage systems have become more severe, municipal owners and engineers are expecting increasing performance-it is imperative these structures meet their anticipated design expectancy. This tenet also applies to the protection offered by high-performance lining systems. To maximize the service life of quality lining products it is critical that all substrates in the sewerage systems be prepared in the very best manner. The use of industry consensus standards and prevailing industry practices are paramount to achieving optimum protection of our critical wastewater assets with high-performance protective lining systems.

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