New Materials for Next-Generation Commercial Transports (1996) / Chapter Skim
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5 Environmentally Compliant Materials and Processes
5 Environmentally Compliant Materials and Processes
Pages 45-48
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From page 45... ...
It requires the development of state implementation plans to achieve national, ambient air quality standards. This legislation has a profound influence on aircraft design and operation, because it affects all materials and processes involving volatile organics, including paints and finishes, cleaning, and surface preparation, and adhesive bonding.
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From page 46... ...
Some of the developments linked to compliance with environmental regulations include: chromium reduction and elimination~hromic-acid anodize replacement with boric-sulfuric-acid anodize; Zn-Ni alloy plating or ion-vapor-deposited aluminum coatings as alternative to cadmium plating,; modification of vapor de:,reasers for aqueous cleaning systems, methyl siloxanes as replacements for chlorofluorocarbons and methyl chloroform in precision cleaning; replacement of 1,1,1 trichloroethane in handwipe cleaning operations; computerized inventory data management of hazardous materials, material tracking, and management; and new coating-removal developments, methylene chloride-free paint strippers, low-volatile organic compound coatings, replacement of primers containing ozone depleting substances. As restrictions on disposal become more stringent worldwide, materials suppliers and aircraft manufacturers must consider the issues of recycling and disposal of advanced materials.
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From page 47... ...
For next-generation 47 commercial transports, the effects are particularly significant in materials that contain heavy metals or volatile organic compounds or in processes that use solvents. In response to regulatory pressures, the drive to new materials and processes will have the greatest impact on the operation and maintenance of the aircraft fleet in the areas of corrosion protection, surface preparation processes, finish materials, and finish application processes.
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