公开(公告)号：US20210292243A1

公开(公告)日：2021-09-23

申请号：US17260344

申请日：2019-08-22

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Gareth A. Hughes ,  Melissa A. Lackey ,  Brant U. Kolb ,  Jerome G. Magnant ,  Zeba Parkar ,  Kevin M. Casey ,  Nicholas S. Wren

IPC: C04B35/584 ,  C04B35/634 ,  C04B35/624 ,  C04B35/626 ,  C04B35/64 ,  C04B38/06 ,  B29C64/124 ,  B33Y10/00 ,  B33Y70/10 ,  B28B1/00

Abstract: The present disclosure provides a method of making a non-oxide ceramic part. The method includes obtaining a photopolymerizable slurry; selectively curing the photopolymerizable slurry to obtain a gelled article; drying the gelled article to form an aerogel article or a xerogel article; heat treating the aerogel article or the xerogel article to form a porous ceramic article; and sintering the porous ceramic article to obtain a sintered ceramic article. The photopolymerizable slurry includes non-oxide ceramic particles; at least one radiation curable monomer; a solvent; a photoinitiator; an inhibitor; and at least one sintering aid. Further, aerogels, xerogels, porous ceramic articles, and non-oxide ceramic articles are provided. In addition, methods are provided, including receiving, by a manufacturing device having one or more processors, a digital object comprising data specifying an article; and generating, with the manufacturing device by an additive manufacturing process, the article based on the digital object. A system is also provided, including a display that displays a 3D model of an article; and one or more processors that, in response to the 3D model selected by a user, cause a 3D printer to create a physical object of an article.

公开(公告)号：US20210163362A1

公开(公告)日：2021-06-03

申请号：US17248965

申请日：2021-02-16

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kathleen M. Humpal ,  Brant U. Kolb ,  Melissa A. Lackey ,  Mark J. Hendrickson ,  Paul D. Pennington

IPC: C04B35/48 ,  C08J9/24 ,  C04B35/486 ,  C08F220/06 ,  C01F17/206 ,  C04B35/632 ,  C04B35/64 ,  C08K3/22 ,  B01J13/00 ,  C01G25/02 ,  C08F222/20 ,  C04B35/634 ,  C04B35/624

Abstract: Reaction mixtures, gel compositions that are a polymerized product of the reaction mixtures, shaped gel articles that are formed within a mold cavity and that retain the size and shape of the mold cavity upon removal from the mold cavity, and sintered articles prepared from the shaped gel articles are provided. The sintered article has a shape identical to the mold cavity (except in regions where the mold cavity was overfilled) and to the shaped articles but reduced in size proportional to the amount of isotropic shrinkage. Methods of forming the sintered articles also are provided.

公开(公告)号：US20190185328A1

公开(公告)日：2019-06-20

申请号：US16326307

申请日：2017-08-16

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kathleen M. Humpal ,  Melissa A. Lackey ,  Brant U. Kolb ,  Paul D. Pennington ,  Mark J. Hendrickson

IPC: C01B33/158 ,  C08F220/28 ,  C08K3/36 ,  C08K9/06 ,  C08J9/28 ,  B29C39/00 ,  B29C39/02

CPC classification number: C01B33/1585 ,  B29C39/006 ,  B29C39/02 ,  B29K2033/08 ,  B29K2105/0061 ,  B29K2509/00 ,  B29K2995/0027 ,  B29L2028/00 ,  C01B33/158 ,  C04B35/14 ,  C04B35/624 ,  C04B35/6265 ,  C04B35/62655 ,  C04B38/0045 ,  C08F220/28 ,  C08F2220/285 ,  C08F2800/20 ,  C08J9/286 ,  C08J2201/042 ,  C08J2205/026 ,  C08J2333/14 ,  C08K3/36 ,  C08K9/06 ,  C08K2201/011 ,  C04B38/0054

Abstract: Shaped gel articles that are formed within a mold cavity and that retain the size and shape of the mold cavity upon removal from the mold cavity, sintered articles prepared from the shaped gel articles, and methods of making the sintered articles are provided. The shaped gel articles are formed from a casting sol that contains colloidal silica particles that are treated with a surface modification composition that includes a silane surface modification agent having a radically polymerizable group. The sintered article has a shape identical to the mold cavity (except in regions where the mold cavity was overfilled) and to the shaped gel article but reduced in size proportional to the amount of isotropic shrinkage.