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acetal resin

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  • acetal resin — acetal resin, a thermoplastic material obtained by polymerization of formaldehyde. Acetal resins are tough, stiff, springy, and have a high melting point. They are used as a substitute for metals, in automobile and appliance parts, and in… …   Useful english dictionary

  • vinyl resin — noun a thermoplastic derived by polymerization from compounds containing the vinyl group • Syn: ↑vinyl polymer, ↑polyvinyl resin • Hypernyms: ↑synthetic resin • Hyponyms: ↑polyvinyl acetate, ↑PVA, ↑ …   Useful english dictionary

  • polyvinyl acetal — noun : any of a group of thermoplastic resins made by condensing polyvinyl alcohol with an aldehyde and used chiefly in the form of sheets and films, molded products, coatings, and adhesives; especially : the resin made from acetaldehyde * * *… …   Useful english dictionary

  • polyvinyl acetal — Chem. 1. any of the class of thermoplastic resins derived by the condensation of an aldehyde with polyvinyl alcohol. 2. the slightly yellow, water insoluble resin produced from partially hydrolyzed polyvinyl acetate and formaldehyde: used chiefly …   Universalium

  • Polyoxymethylene plastic — Polyoxymethylene (POM), in the USA also commonly known under DuPont s brand name Delrin, is an engineering plastic, a polymer with the chemical formula ( O CH2 )n . It is often marketed and used as a metal substitute. Delrin is a lightweight, low …   Wikipedia

  • Polyoxymethylene — Other names Poly(oxymethylene) glycol; Polymethylene glycol …   Wikipedia

  • Polymer — Appearance of real linear polymer chains as recorded using an atomic force microscope on surface under liquid medium. Chain contour length for this polymer is 204 nm; thickness is 0.4 nm.[1] A polymer is a large molecule (macromolecule …   Wikipedia

  • Chlorine — This article is about the chemical element. For the bleach, see Sodium hypochlorite. For the upcoming film, see Chlorine (film). sulfur ← chlorine → argon F ↑ Cl ↓ Br …   Wikipedia

  • Polymer degradation — is a change in the properties tensile strength, colour, shape, etc of a polymer or polymer based product under the influence of one or more environmental factors such as heat, light or chemicals. These changes are usually undesirable, such as… …   Wikipedia

  • Stress corrosion cracking — (SCC) is the unexpected sudden failure of normally ductile metals or tough thermoplastics subjected to a tensile stress in a corrosive environment, especially at elevated temperature (in the case of metals). SCC is highly chemically specific in… …   Wikipedia

  • Forensic polymer engineering — The study of failure in polymeric products is called forensic polymer engineering. The topic includes the fracture of plastic products, or any other reason why such a product fails in service, or fails to meet its specification. The subject… …   Wikipedia

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