foamed plastic

      synthetic resin converted into a spongelike mass with a closed-cell or open-cell structure, either of which may be flexible or rigid, used for a variety of products including cushioning materials, air filters, furniture, toys, thermal insulation, sponges, plastic boats, panels for buildings, and even lightweight beams. Under appropriate conditions almost any thermosetting or thermoplastic resin can be converted into a foam. Plastics that are commonly foamed include vinyls, polystyrene, polyethylene, phenolics, silicones, cellulose acetate, and urethanes.

      Foams with a closed-cell structure are produced by incorporating a blowing agent that decomposes at the fusion point of the plastic, releasing gas bubbles that are trapped during the gelling. Foams with an open-cell structure are produced by incorporating an inert gas into the resin under pressure and then releasing the mixture to the atmosphere and curing the resulting foam.

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Universalium. 2010.

Look at other dictionaries:

  • foamed plastic — putplastis statusas T sritis chemija apibrėžtis Akytasis plastikas, kurio akutės uždaros. atitikmenys: angl. closed cell foam plastic; closed cell foamed plastic; foam plastic; foamed plastic; plastic foam rus. пенопласт …   Chemijos terminų aiškinamasis žodynas

  • foamed plastic — noun also foam plastic : expanded plastic …   Useful english dictionary

  • foamed plastic — noun Date: 1945 expanded plastic …   New Collegiate Dictionary

  • foamed plastic. — See expanded plastic. [1935 40] * * * …   Universalium

  • foamed plastic. — See expanded plastic. [1935 40] …   Useful english dictionary

  • Foamed plastic — Пенопласт; пластмасса с ячеистой структурой; Пенопласт …   Краткий толковый словарь по полиграфии

  • closed cell foamed plastic — putplastis statusas T sritis chemija apibrėžtis Akytasis plastikas, kurio akutės uždaros. atitikmenys: angl. closed cell foam plastic; closed cell foamed plastic; foam plastic; foamed plastic; plastic foam rus. пенопласт …   Chemijos terminų aiškinamasis žodynas

  • plastic — plastically, plasticly, adv. /plas tik/, n. 1. Often, plastics. any of a group of synthetic or natural organic materials that may be shaped when soft and then hardened, including many types of resins, resinoids, polymers, cellulose derivatives,… …   Universalium

  • plastic foam — putplastis statusas T sritis chemija apibrėžtis Akytasis plastikas, kurio akutės uždaros. atitikmenys: angl. closed cell foam plastic; closed cell foamed plastic; foam plastic; foamed plastic; plastic foam rus. пенопласт …   Chemijos terminų aiškinamasis žodynas

  • Plastic — is the general common term for a wide range of synthetic or semisynthetic organic solid materials suitable for the manufacture of industrial products. Plastics are typically polymers of high molecular weight, and may contain other substances to… …   Wikipedia

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