| 单词 | polystyrene |
| 释义 | polystyrene|pɒlɪˈstaɪəriːn|
[f. poly- + styrene.]
Any polymer of styrene, esp. a hard, colourless thermoplastic resin; also, any of various plastics made from or containing this, which are widely used as moulding materials, films, and rigid foams. Also attrib.
1927G. S. Whitby in India-Rubber Jrnl. 16 Apr. 16/2 Poly-styrene becomes markedly elastic when warmed or swollen. Ibid., Unstretched poly-styrene gave only an ‘amorphous ring’ when subjected to X-ray examination. 1939Nature 13 May 787/2 The vinyl and polystyrene resins have valuable properties some of which are not possessed by the other resinoids. 1945Electronic Engin. XVII. 698/1 Polystyrene..has long been considered to be the lightest in weight of all plastics. 1959Economist 7 Mar. 895/2 The present output of polystyrene is about 28,000 tons a year, divided between Shell, Distillers and Monsanto. 1961Wall St. Jrnl. 9 June 20/3 Koppers Co. is displaying a complete 12-foot sailboat made of polystyrene foam. 1970N. Saunders Alternative London 18 Sack chairs..consist of a chair-shaped bag three-quarters full of expanded polystyrene granules. 1973Materials & Technol. VI. viii. 530 Polystyrene is readily polymerized exothermally to the straight polystyrene (homopolymer). Ibid. 533 Polystyrenes are manufactured in two stages. In the first stage the monomer styrene, possibly together with other monomers, is converted into the polymer... In the second stage the polymer is granulated, other substances frequently being added at the same time; rubbers,..oxidizers, pigments and the like, are such additions. |
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