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Polypropylene (PP)

PP, a polyolefin, is a thermoplastic made by the polymerization of propylene gas, a by-product of petroleum refining. Various techniques can vary the physical, chemical or mechanical properties of PP. PP offers a good balance of thermal, chemical and electrical properties with moderate strength. It possesses a good strength to weight ratio. Because it has such a hard, high gloss surface, PP is ideally suited to environments where there is concern for bacteria build up that can interfere with flow. PP is approved for direct food contact. It has good insulating properties. Its excellent arc resistance and dielectric strength allows PP to be used extensively in electrical applications. PP has a good resistance to chemicals and solvents, including aqueous, salts, acids or alkaline solution. IT also has very low permeability to water vapor and gases. The resins are attacked, by halogens, fuming nitric acid and other oxidizing agents, and by aromatic and chlorinated hydrocarbons at high temperatures. While designing with PP the coefficient of thermal expansion, modulus of elasticity and its compressive strengths need to be considered. PP can be fabricated with standard woodworking tools. It can be butt welded, extrusion welded, fusion welded and spun welded. Applications: - Tanks - Scrub stations - Piping systems - Semi-Conductor processing - Solar collectors - Water pumps - Cutting boards - Animal feeders - Radio and TV Equipment - Packaging - Chemical process equipment - Laboratory Equipment

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