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In recent years, many tall and large-scale structures have been constructed under harsh environmental conditions. It is required to protect steel structures from a variety of environmental factors over a long period of time. In order to meet such requirements, the increase in durability, extension of lifetime and reduction in life-cycle cost of protective coatings has constantly been the subject of investigations.
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In June of 2006 the South Coast Air Quality Management District (SCAQMD) implemented new volatile organic compound (VOC) requirements for industrial maintenance coatings. Two years prior to this date The California Department of Transportation started looking for a replacement latex resin that would meet these new requirements and still have the same properties as currently used industrial maintenance bridge coatings.
Global Environmental Regulations have driven many coatings developments over the last decades. Today´s regulations around worker safety and environment protection are seen as important drivers in new product development. More recently such regulations are spreading widely, as people want to live on a planet where everyone can enjoy a better quality of life, breathe clean air, where rivers and oceans are preserved, and the impact of humans on wildlife is reduced.
This paper will examine the different restrictions and indicators currently used to classify coatings as ‘Green”. It will also take a brief look at the Organizations and Governmental agencies that classify coatings as ‘Green”. The process of how to certify and the certifying organizations will be discussed. Finally, I will propose some guidelines to develop a universal global standard based upon existing commonality that would then have to be accepted by the global sanctioning bodies and users, while overcoming the bureaucratic hurdles and other obstacles and challenges in the way
VOC was one of the paint emissions accused to be an environmental hazardous material and among the main causes for SBS (Sick Building Syndrome). The term SBS was coined in the late 1970's to describe situations where building occupants experienced acute health problems. “According to WHO (World Health Organization), 4.3 million people a year die from the exposure to in-house air pollution”
Many common organic solvents that are utilized daily in industrial, commercial and academic settings are known to be toxic to workers, end-user as well as detrimental to the environment. As awareness increases to the deleterious effects of these solvents, regulations for emissions and exposure are constantly being reviewed and updated to restrict their use across industries and the sale of such products in the marketplace.
The presentation will share new developments in polyaspartic technology that allows contractors to repair aged gelcoat originally used as the OEM /wearcoat over fiberglass composites and other architectural substrates by using this environmentally preferred option.
Green Seal is modifying its coating standard, GS-11, to reflect today’s environmental concerns. The biggest area of concern is greenhouse gases, global warming, energy conservation and Urban Heat Islands which is referenced under the Kyoto Treaty, EPA Clean Air Act, California AB 32, Title 24 and other air quality legislation. Green Seal can address these concerns by including a new energy-efficient requirement in to its new coating standards.
Cost effective and optimum pigment dispersion is the most important aspect of color and appearance of coatings. Brilliant hues and high chroma are achieved by a perfect pigment dispersion where primary pigment particles are achieved and are well stabilized in the finished paint. The dispersion process is very critical, very time consuming and cost-intensive, and consists of continuous reduction of the pigment agglomerates into smaller size aggregates, and finally into primary particles.
Anti-corrosion coating systems typically rely on viscous two-component systems with high VOC content. Autocatalytic, moisture-cure polyurethanes (MC PU) offer a unique approach to develop one-component coatings, which are easier to apply compared to 2k systems and usually can be formulated with lower VOC content.
Throughout their history, the value of vinyl and vinyl/acrylic coating systems has been well documented; from the superior corrosion protection of vinyl to the all-around durability and appearance that acrylics lend, vinyl and vinyl/acrylic coating systems are well known for their ability to protect as well as beautify all types of industrial, transportation, marine and hydraulic structures. Within the past few decades increasingly stringent air-quality standards and environmental regulations curtailed the use of the solvents used in many coating systems, including vinyls and vinyl/acrylics.
General Dynamics NASSCO proved that by modernizing its facilities and changing its operations it could build ships similarly to the industry leaders in Asia.