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    • 7. 发明授权
    • Polymer-wood composites and additive systems therefor
    • 聚合物 - 木材复合材料及其添加剂系统
    • US06942829B2
    • 2005-09-13
    • US10426943
    • 2003-04-30
    • Gerald W. Drabeck, Jr.Juan BravoMichael DiPierroAnna C. AndrewsJames M. McKinneyBrenda HolloDeenadayalu Chundury
    • Gerald W. Drabeck, Jr.Juan BravoMichael DiPierroAnna C. AndrewsJames M. McKinneyBrenda HolloDeenadayalu Chundury
    • C08L97/02B28B3/20B29C47/00
    • C08L97/02B29B7/46B29B7/92C08L23/00C08L2666/02
    • The present invention provides a method of forming a polymer-wood composite structure and additive systems for use therein. The method of the invention includes extruding a heated mixture that includes from about 20% to about 80% by weight of a thermoplastic polymer, from about 20% to about 80% by weight of a cellulosic filler material, and from about 0.1% to about 10% by weight of an additive system. The additive system according the invention includes a blend of from about 10% to about 90% by weight of a nonionic compatibilizer having an HLB value of from about 9 to about 19 and from about 10% to about 90% by weight of a lubricant. Use of the method and additive system according to the invention facilitates the production of highly filled polymer-wood composite structures at a very high output rate while maintaining commercially acceptable surface appearance. Moreover, the method and additive system according to the invention facilitate the reprocessing of scrap material generated during the production of polymer-wood composite structures without degrading the surface appearance of the polymer-wood composite structures.
    • 本发明提供一种形成聚合物 - 木材复合结构的方法和用于其中的添加剂体系。 本发明的方法包括挤出加热的混合物,其包括约20%至约80%重量的热塑性聚合物,约20%至约80%重量的纤维素填料,和约0.1%至约 10重量%的添加剂体系。 根据本发明的添加剂体系包括约10重量%至约90重量%的HLB值为约9至约19重量%和约10重量%至约90重量%润滑剂的非离子增容剂的共混物。 根据本发明的方法和添加剂体系的使用有助于以非常高的产率生产高度填充的聚合物 - 木材复合结构,同时保持商业上可接受的表面外观。 此外,根据本发明的方法和添加剂体系有助于在生产聚合物 - 木材复合结构体期间产生的废料的再加工,而不降低聚合物 - 木材复合结构的表面外观。