Preservative Coats

Melt-sprayed coatings have ethyl cellulose, acetyl cellulose or cellulose ace-tobut3Tate as a film-forming base. Mineral oil, which dissolves a number of Cl of ferrous and nonferrous metals and is perfectly compatible with the majority of cellulose plasticizers, is often introduced into the molten composition to lower adhesion of the coating to the goods being protected. 

Coatings removed from articles can be remolten and reused for preservation. 

Paint-and-varnish coatings for temporal protection of metal ware are subdivided into wipe-off and detachable. 

Wipe-off coats are not numerous. Coating compositions based on neutralized synthetic fatty acids modified by a mixture of water- and oil-soluble Cl are diluted by white spirit to the required viscosity. They are either sprayed, 

Wipe-off coats based on alkyd-styrene lacquer and oil-soluble contact Cl form a bright goldish film on the surface protecting both ferrous and nonfer-rous metal ware from corrosion during storage in unheated depots. 

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Fitzsimmons, V. G., and W. A. Zisman Thin films of polytetrafluoroethylene resin ("Teflon ) as lubricants and preservative coatings for metals. NRL Report 4753. Naval Research Laboratory, Washington, D. C., June 15, 1956. See also Ind. Eng. Chem. 50, 781-784 (1958). 

It should be emphasized that inhibited polymer coatings are a separate class of polymer coats. The necessity of Cl impregnation into their polymer base, the requirement of preserving coating adhesion, the demand of inhibitor delivery to the metal substrate, etc. have stipulated their original compositions and specific technological means of manufacture. Note that inhibited coatings are more expensive than usual polymer ones but this is quickly... 

Wood preservative coatings Coatings which are formulated to protect wood from decay... 

Who A competent person is to test a surface covered by a preservative coating for flammability before welding, cutting, or heating is started (when the flammability of the preservative coating is not known). 

Testing methods for hoses which are subject to flashback or show evidence of severe wear or damage, and for determining the flammability of preservative coatings on surfaces. 

For construction," OSHA has ventilation regulations for tunnels and shafts, compressed air, preservative coatings, temporary heating devices, and welding and cutting. 

Welding, Cutting, and Heating in Way of Preservative Coatings —1915.53(b) Welding, Cutting and Heating of Hollow Metal Containers and Structures Not Covered by 1915.12... 

Non-preserved coatings, no matter they are classified as mineral -, styrene acrylic -, or silicon bound stucco, or paint finishes, are prone to microbial defacement. 

This document lists the specifications and standards for those plastic materials and plastics applications which are considered to be of interest to engineers concerned with the design, development, production, and handling of defense hardware. Included are specifications for the basic or raw materials, composite materials, and the items and applications of potential defense concern. Excluded are specifications on life-situation items clothing, utensils, and furniture, and decorative or preservative coatings. 

Welding, Cutting, and Heating In Way of Preservative Coatings—1926.354(a) Subpart K Electrical... 

Evaluate, in each individual case, which texture of surface gives the best anti-corrosion service and specify this degree of surface roughness in the design. Observe that it is not always sufficient to specify only the texture of the substrate, but that the texture and consistency of preservation coatings or surfacing materials may also be required. 

In addition to computer monitors (which account for almost 90% by weight of the lead (Pb) in electronic waste found in landfills) printed wiring assemblies are the other major source of Pb in electronic products. The tin-lead solder alloys used in components and on solderable terminations, and as a preservative coating on cards and boards, are the applications for lead-free solder compositions. 

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