单词 | polyoxymethylene |
释义 | > as lemmaspolyoxymethylene polyoxymethylene n. Brit. /ˌpɒlɪɒksɪˈmɛθᵻliːn/ , U.S. /ˌpɑliˌɑksiˈmɛθəˌlin/ any of a number of polymers which are prepared from formaldehyde and in which the repeating unit is the group —CH2·O—; esp. any of the tough, strong thermoplastics of this type which are used as moulding materials.ΘΚΠ the world > matter > chemistry > polymer chemistry > resins and plastics > [noun] > thermoplastic resins > polyoxymethylene polyoxymethylene1908 polyformal1935 polyformaldehyde1959 society > occupation and work > materials > derived or manufactured material > synthetic resins and plastics > [noun] > plastic > capable of hardening after heating or (re)shaping > types of polystyrol1873 polyoxymethylene1908 polystyrene1927 polyvinyl chloride1930 polyacetal1931 polyformal1935 polypropylene1935 PVC1941 polyacrylic1959 phenoxy1962 polyallomer1962 ionomer1964 parylene1965 polypro1986 1908 Jrnl. Chem. Soc. 94 131 When heated in the open, these three poly~oxymethylenes volatilise without first melting. 1959 Jrnl. Appl. Physics 30 1516/1 (caption) Single crystals of an acetal resin, polyoxymethylene. 1998 Proc. National Acad. Sci. U.S.A. 95 3296/1 The length stimuli were cylinders of polyoxymethylene 30 mm in diameter. < as lemmas |
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