| 摘要 |
A process of the preparation of a flame-retardant thermoplastic molding composition is disclosed. The process entails adding an aqueous dispersion of PTFE into polycarbonate resin in the form pellets and/or powder to obtain a material system and melt blending the resulting material system optionally with additional polycarbonate to obtain a thermoplastic composition. The content of PTFE in the composition is that which is sufficient to render it good surface appearance, high impact strength, and stringent flame retardance without the incorporation of additional flame retardant agent therewith.
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