| 摘要 |
<p>Engineering thermoplastics which are thermoformable at relatively low temperatures are prepared from blends of selected proportions of polycarbonate or polyarylate resins and polyetherimide with siloxane-polyetherimide copolymer resins. The thermoplastics of the invention exhibit flame retardancy to a degree acceptable for their use in the fabrication of aircraft components, such as interior compartment panels. Preferred blends include as a major proportion of the polycarbonate resin component, selected polyester-carbonate resins containing chain units which are residues of isophthalic and terephthalic acids.</p> |
