公开(公告)号：US20210189605A1

公开(公告)日：2021-06-24

申请号：US17182678

申请日：2021-02-23

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： Eric D. Wetzel ,  Larry R. Holmes, JR. ,  Ricardo X. Rodriguez ,  Patrick M. Toal, JR.

IPC: D01F8/14 ,  B29C64/106 ,  B29C55/00 ,  B29C35/02 ,  D01F8/10 ,  D01F8/18 ,  D01F8/00 ,  B33Y70/00 ,  D01D5/30 ,  D01D5/24 ,  B29C64/118 ,  B29C65/00 ,  B29D11/00 ,  B29C65/56

Abstract: A thermoplastic filament comprising multiple polymers of differing flow temperatures in a geometric arrangement and an interior channel containing a structural or functional thread therein is described. A method for producing such a filament is also 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 a filament or fiber with an interior thread contained within the outer, printed filament or fiber. This thread adds structural reinforcement or functional properties, such as electrical conductivity or optical waveguiding, to the filament.

公开(公告)号：US10590241B2

公开(公告)日：2020-03-17

申请号：US15434391

申请日：2017-02-16

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： Eric D. Wetzel ,  Emil Jose Sandoz-Rosado ,  Todd David Beaudet ,  Radhakrishnan Balu ,  John Joseph La Scala ,  Dominika Nini Lastovickova

IPC: C08G73/10 ,  C08G73/18 ,  C08G73/22 ,  C08G63/00 ,  C08G63/78 ,  C08G63/133 ,  F41H5/08 ,  C08G75/32 ,  C08G63/127 ,  C08G69/32 ,  C08G73/02 ,  C08G63/06

Abstract: A family of new and novel molecules for mechanically superior two-dimensional (2D) polymers is described herein. By combining stiff carbon-containing cyclic polymer nodal units with more compliant linear polymer bridge units in an ordered, 2D repeating molecular structure it is possible to tailor the mechanical properties of 2D polymers and their assemblies to provide high stiffness, strength, and toughness. Furthermore, the inherent dimensionality of 2D polymers and their ability to be stacked into ordered and chemically interactive ensembles gives them inherent benefits in a variety of barrier and structural applications over current stiff and strong linear polymer technologies.

公开(公告)号：US11001945B2

公开(公告)日：2021-05-11

申请号：US15081048

申请日：2016-03-25

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： Eric D. Wetzel ,  Larry R. Holmes, Jr. ,  Ricardo X. Rodriguez ,  Patrick M. Toal, Jr.

IPC: B29C55/22 ,  B29C63/18 ,  B32B1/08 ,  B33Y10/00 ,  D01D5/08 ,  D01D5/24 ,  D01D5/253 ,  D01D5/32 ,  D01D5/34 ,  D01F8/02 ,  D01F8/04 ,  D01F8/06 ,  D01F8/10 ,  D01F8/12 ,  D01F8/14 ,  D01F8/16 ,  D01F8/18 ,  D02J1/22 ,  D01F8/00 ,  C03B37/028 ,  B33Y70/00 ,  C03B37/027 ,  D01D5/30 ,  G02B6/00 ,  C03B19/00 ,  G02B6/02 ,  B29C65/00 ,  B29D11/00 ,  B29C65/56 ,  B29C64/118 ,  B29L31/00 ,  B29L11/00

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.

公开(公告)号：US10968539B2

公开(公告)日：2021-04-06

申请号：US15630175

申请日：2017-06-22

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： Eric D. Wetzel ,  Larry R. Holmes, Jr. ,  Ricardo X. Rodriguez ,  Patrick M. Toal, Jr.

IPC: B29C55/22 ,  B33Y10/00 ,  D01D5/08 ,  D01D5/34 ,  D01F8/02 ,  D01F8/04 ,  D01F8/06 ,  D01F8/12 ,  D01F8/16 ,  D02J1/22 ,  D01F8/14 ,  B29C64/106 ,  B29C55/00 ,  B29C35/02 ,  D01F8/10 ,  D01F8/18 ,  D01F8/00 ,  B33Y70/00 ,  D01D5/30 ,  D01D5/24 ,  B29C64/118 ,  B29C65/00 ,  B29D11/00 ,  B29C65/56 ,  B29K69/00 ,  B29K105/08 ,  B29L31/00 ,  B29K55/02 ,  B29K33/00 ,  G02B6/02 ,  B29L11/00

Abstract: A thermoplastic filament comprising multiple polymers of differing flow temperatures in a geometric arrangement and an interior channel containing a structural or functional thread therein is described. A method for producing such a filament is also 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 a filament or fiber with an interior thread contained within the outer, printed filament or fiber. This thread adds structural reinforcement or functional properties, such as electrical conductivity or optical waveguiding, to the filament.

公开(公告)号：US20150197634A1

公开(公告)日：2015-07-16

申请号：US14499346

申请日：2014-09-29

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： DANIEL J. O'BRIEN ,  Eric D. Wetzel

IPC: C08L77/00 ,  C08L23/12 ,  C08L33/00 ,  C08L63/00

CPC classification number: C08L77/00 ,  C08L23/0876 ,  C08L33/12 ,  C08L2201/10 ,  C08L2205/16 ,  C09D123/0876 ,  Y10T428/249921

Abstract: A composite material having a transparent reinforcement constituent encased in a transparent matrix constituent is described and illustrated herein. The reinforcement constituent and matrix constituent are selected so that a difference of the refractive index between the two constituents is less than 0.003 for visible light and across a temperature range of at least 0 degrees centigrade to 50 degrees centigrade.

Abstract translation: 本文描述和示出了具有包封在透明基质成分中的透明增强组分的复合材料。 选择增强成分和基质成分，使得两种成分之间的折射率差异对于可见光并且在至少0摄氏度至50摄氏度的温度范围内小于0.003。