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Corrosion can seriously damage the substrate and can lead to significant repair or replacement costs. Good corrosion protection for metal coatings is traditionally achieved through two component (2K) systems. However, they show certain disadvantages that do not exist for one component (1K) systems.
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Within the Wastewater Treatment process the growth of soft fouling materials (algae) create problems such as Total Suspended Solids issues, false BOD readings, clogged pumps, and reduced flow rates through the weirs of clarifiers. Furthermore, dead or dying algae can cause additional odor concerns. This phenomenon has cost municipalities and taxpayer’s untold amounts of money due to the required maintenance dollars spent to correct this problem.
Oil and gas wells are highly corrosive environments because they contain H2S and CO2. The 13Cr martensitic stainless steel is widely used in the oil and gas industry because of high good corrosion resistance in CO2 gas wells. Generally, the addition of Mo increases the passivity of steel. However, the role of Mo in passive films has not been completely clarified.
Recent polyurea resin technology advances have allowed for the development of value-added polyurea topcoats that are proving to be valuable alternatives for many polyurethane applications. The development of an SSPC specification for a weatherable polyurea topcoat is discussed for the purpose of providing a standard that will be acceptable throughout our industry.
Recently, the advantages of thick film coatings and linings have led to uses in many different applications in the industrial, commercial and automotive markets. Although this polyurethane and polyurea materials have excellent physical properties, they are based on aromatic chemistry which is susceptible to damage from UV radiation and is not light stable.
This presentation will cover Why adheson matters, paint Specifications and test methods.
Aluminum, after iron is the second -most widespread metal used on earth. Unpainted aluminum forms a protective aluminum oxide layer over the pure aluminum metal alloy and, in most atmospheric environments, is resistant to corrosion deterioration. However, pure aluminum is virtually always alloyed with other metallic elements to enhance its properties, primarily to increase its strength, but also to improve its formability, weldability, machineability, electrical conductivity, and corrosion resistance.
For the last several decades, polyurethane/polyurea spray-applied elastomeric coatings have gained market acceptance as durable, and long-lasting protective coatings. With the advances of the high-pressure impingement spray equipment technology during mid-to-late 1980’s, fast setting, two component polyurethane/polyurea coatings finally have a fighting chance in the protective coatings market.
This Guide was created as a process in the rail industry to standardize and document equipment used for the preparation, application, and inspection of coatings and linings along with the calibration intervals suggested for each piece of equipment. It also lists equipment that is not used to collect data in a quality control capacity and that would not require calibration.
This guide discusses the rationale and method for improving the statistical quality of coating dry film thickness (DFT) data on ferrous and non-ferrous metal substrates by collecting a larger, more representative data set on various geometries of coated metal surfaces. The data points are collected using traditional Type 2 (electronic) coating thickness gages programmed with continuous read/scanning capability and specialty probes or probe covers, if required by the instrument manufacturer. The guide provides supplementary information to the procedure for obtaining measurements contained in Appendix 10 of the 2022 revision of SSPC-PA 2, “Procedure for Determining Conformance to Dry Coating Thickness Requirements.”
This standard covers the requirements for a high-performance, one- or two-component, UV-stable polysiloxane topcoat that provides excellent color and gloss retention. Coatings meeting the requirements of this standard are generally suitable for exposures in the following environments: exterior, normally dry, frequently wet by fresh water, frequently wet by seawater, and chemical atmospheric exposure, pH 5-10. The specified coating is intended for application by brush, spray, or roller. It is generally applied over a compatible primer or intermediate coating.
This standard describes a method for evaluating the general qualifications of firms seeking accreditation under standards for contractor accreditation (hereafter “Qualification Program [QP] standards”).
This is not a standalone standard, as it is intended to be used in conjunction with other standards that incorporate it by reference. The purpose of this standard is to determine whether a contractor:
Keywords: coating contractor qualification procedure, accreditation of coating contractors, QP, field coating work, qualification procedure base, QP Base.