ADHESIVES |
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An adhesive is a compound that adheres or bonds two items together. Adhesives may come from either natural or synthetic sources. Some modern adhesives are extremely strong, and are becoming increasingly important in modern construction and industry.
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ASBESTOS |
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Asbestos (a misapplication of Latin: asbestos "quicklime" from Greek ἄσβεστος: a-, "not"; sbestos, "extinguishable") describes any of a group of fibrous metamorphic minerals of the hydrous magnesium silicate variety. The name is derived for its historical use in lamp wicks; the resistance of asbestos to fire has long been exploited for a variety of purposes. It was used in fabrics such as Egyptian burial cloths and Charlemagne's tablecloth, which, according to legend, he threw in a fire to clean. Asbestos occurs naturally in many forms (see below); it is mined from metamorphic deposits.
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COATINGS |
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A coating is a covering that is applied to an object to protect it or change its appearance. They may be applied as liquids, gases or solids.
Examples of coatings:
Anodizing
Chemical vapor deposition and physical vapor deposition
Chromate conversion coating
Enamel (paint)
Industrial coating
Oxide (coating)
Paint
Plasma coatings
Electroless plating or electrochemical plating
Phosphate (coating)
Polymer coatings, such as Teflon
Sputtered or vacuum deposited materials
Plate steel is often ordered from the mill pickled and oiled)
Enamel (vitreous)
Fusion bonded epoxy coating (FBE coating)
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PLASTICS |
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Plastic covers a range of synthetic or semisynthetic polymerization products. They are composed of organic condensation or addition polymers and may contain other substances to improve performance or economics. There are few natural polymers generally considered to be "plastics". Plastics can be formed into objects or films or fibers. Their name is derived from the fact that many are malleable, having the property of plasticity. Plastics are designed with immense variation in properties such as heat tolerance, hardness, resiliency and many others. Combined with this adaptability, the general uniformity of composition and light weight of plastics ensures their use in almost all industrial segments.
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POLYMERS |
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Polymer is a generic term used to describe a very long molecule consisting of structural units and repeating units connected by covalent chemical bonds. The term is derived from the Greek words: polys meaning many, and meros meaning parts [1]. The key feature that distinguishes polymers from other molecules is the repetition of many identical, similar, or complementary molecular subunits in these chains. These subunits, the monomers, are small molecules of low to moderate molecular weight, and are linked to each other during a chemical reaction called polymerization.
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