发明名称 CONSOLIDATION AND MOLDING OF POLYBENZAZOLE-CONTAINING MATERIALS
摘要 A process for consolidating/molding a material made of (a) block copolymers of rigid or semi-rigid PBZ with thermoplastic polymers, (b) block copolymers of rigid PBZ with semi-rigid PBZ, (c) molecular composites of rigid or semi-rigid PBZ with thermoplastic polymers, (d) molecular composites of rigid or semi-rigid PBZ with non-rigid PBZ polymers or (e) semi-rigid PBZ polymers, whereby the material, in its substantially acid-free, wet coagulated state, and in the form of a plurality of films or film layers, filaments or fibers, powders or granules, film layers, filaments or particulate, is subjected to a first pressure P1 which is sufficient to provide a substantially void-free consolidated material upon molding. Heat and a second pressure P2 is then applied to the wet coagulated material in amounts sufficient to fuse the films or film layers, filaments or fibers, powders, or granules into a single entity. Prior tot he application of the first pressure P1, surface water remaining on the material is removed, leaving the material with sufficient water to plasticize it.
申请公布号 US5244617(A) 申请公布日期 1993.09.14
申请号 US19920831713 申请日期 1992.02.05
申请人 THE DOW CHEMICAL COMPANY 发明人 MURPHY, CONNIE J.;HWANG, WEN-FANG
分类号 C08J5/00;B29C43/14;B29C43/26;B29C67/02;B29C67/24;B29K79/00;B29K105/00;C08G61/10;C08G61/12;C08G73/22;C08L79/04 主分类号 C08J5/00
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