公开(公告)号：US20160281267A1

公开(公告)日：2016-09-29

申请号：US15081048

申请日：2016-03-25

Applicant: U.S. Army Research Laboratory ATT: RDRL-LOC-1

Inventor： ERIC D. WETZEL ,  Larry R. Holmes, JR. ,  Ricardo X. Rodriguez ,  Patrick M. Toal, JR.

IPC: D01F8/10 ,  D01F8/18 ,  C03B37/023 ,  D01F8/14

CPC classification number: D01F8/00 ,  B29C64/106 ,  B33Y70/00 ,  C03B19/00 ,  C03B37/027 ,  C03B37/028 ,  C03B2201/06 ,  C03B2201/32 ,  C03B2201/70 ,  C03B2201/86 ,  D01D5/30 ,  D10B2321/08 ,  D10B2321/10 ,  D10B2331/04 ,  G02B6/00 ,  G02B6/02314

Abstract: A thermoplastic filament comprising multiple polymers of differing flow temperatures in a regular geometric arrangement, and a method for producing such a filament, are described. Because of the difference in flow temperatures, there exists a temperature range at which one polymer is mechanically stable while the other is flowable. This property is extremely useful for creating thermoplastic monofilament feedstock for three-dimensionally printed parts, wherein the mechanically stable polymer enables geometric stability while the flowable polymer can fill gaps and provide strong bonding and homogenization between deposited material lines and layers. These multimaterial filaments can be produced via thermal drawing from a thermoplastic preform, which itself can be three-dimensionally printed. Furthermore, the preform can be printed with precisely controlled and complex geometries, enabling the creation of monofilament and fiber with unique decorative or functional properties.

Abstract translation: 描述了包括具有规则几何排列的不同流动温度的多种聚合物的热塑性长丝和用于制造这种丝的方法。 由于流动温度的差异，存在一种聚合物机械稳定而另一种是可流动的温度范围。 该性质对于制备用于三维印刷部件的热塑性单丝原料非常有用，其中机械稳定的聚合物具有几何稳定性，而可流动的聚合物可以填充间隙并在沉积的材料线和层之间提供牢固的结合和均化。 这些多材料丝可以通过热塑性预成型件的热拉伸制造，其本身可以是三维印刷的。 此外，可以精确地控制和复杂的几何形状来印刷预成型件，从而能够产生具有独特装饰或功能特性的单丝和纤维。