公开(公告)号：US20120220697A2

公开(公告)日：2012-08-30

申请号：US13049222

申请日：2011-03-16

申请人： Michael Deaner ,  Keith Effertz ,  Patrick Gronlund ,  Larry Morelli ,  Matthew Sedivy ,  Paul Bischoff

发明人： Michael Deaner ,  Keith Effertz ,  Patrick Gronlund ,  Larry Morelli ,  Matthew Sedivy ,  Paul Bischoff

IPC分类号： C08J5/10 ,  C08L97/02 ,  C08L67/04

CPC分类号： C08L97/02 ,  B29C47/0004 ,  B29C47/0014 ,  B29C47/0021 ,  B29C47/0023 ,  B29C47/80 ,  B29C47/827 ,  B29C47/862 ,  B29C47/8895 ,  B29C47/92 ,  B29C2947/92704 ,  B29C2947/92857 ,  B29K2067/046 ,  B29K2105/0005 ,  B29K2105/16 ,  B29K2511/14 ,  B29K2995/006 ,  C08J3/203 ,  C08J5/045 ,  C08J5/10 ,  C08J2367/04 ,  C08L67/04

摘要： Members including components of windows and doors are formed by a method that includes obtaining a biopolymer and a filler, feeding them into an extruder, controlling at least the temperature of the biopolymer and the filler within the extruder to promote the initiation of nucleation of the biopolymer, extruding the composite through a die of the extruder to form an extruded member and controlling at least the cooling rate of the extruded member after it leaves the die to promote crystallization of the biopolymer. Methods are disclosed for compounding and pelletizing as well as direct extrusion of the composite. In a preferred embodiment, the biopolymer is polylactic acid (PLA) and the filler is wood fiber. In addition, neat PLA formulations are also disclosed. Further, the heat distortion temperature and the hydrolysis resistance of these members are greatly increased through specific processing conditions and the addition of strategic quantities of additives.

摘要翻译： 包括门窗部件的构件通过包括获得生物聚合物和填料，将它们进料到挤出机中的方法形成，至少控制挤出机内的生物聚合物和填料的温度以促进生物聚合物成核的开始 通过挤出机的模头挤出复合材料以形成挤出构件，并且在挤出构件离开模具之后至少控制挤出构件的冷却速率以促进生物聚合物的结晶。 公开了用于复合和造粒以及直接挤出复合材料的方法。 在优选的实施方案中，生物聚合物是聚乳酸（PLA），填料是木纤维。 此外，还公开了纯的PLA制剂。 此外，这些构件的热变形温度和耐水解性通过特定的加工条件和添加战略量的添加剂而大大增加。