| 摘要 |
1,246,582. Glass/thermoplastic articles. PITTSBURGH CORNING CORP. 14 Feb., 1969, No. 8219/69. Heading B5A. Shaped articles may be made by coating multicellular glass nodules with thermoplastic resin and/or one or more monomers which are polymerizable to a thermoplastic resin and heating the coated nodules in a mould to above the softening point of the resin. The coated nodules are preferably mixed with granules of unexpanded or partially expanded resin before heating. The glass nodules preferably have a diameter of 1/10-2/3 of the wall thickness of the product article. The thermoplastic resin may be a homo- or copolymer of one or more vinyl monomers, e.g. styrene, vinyl chloride, divinyl benzene,α-methyl styrene, a nuclear dimethyl styrene or vinyl naphthalene, or a copolymer of styrene with butadiene,α-methyl styrene, divinyl benzene, isobutylene or acrylonitrile or polystyrene itself. The resin may also contain a blowing agent. The resin may be applied as a solution, e.g. in toluene, benzene or styrene. At least part of the surface of the product article may be covered by an impervious material or a metal foil. |
