公开(公告)号：US10781332B2

公开(公告)日：2020-09-22

申请号：US16074806

申请日：2017-02-03

Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： Dae-Soon Lim ,  Eung-seok Lee

IPC: C09D127/18 ,  B01J19/08 ,  C09D7/62 ,  C01B32/28 ,  C09D7/40 ,  C08K3/04 ,  C08K9/04

Abstract: Provided are a polytetrafluoroethylene (PTFE) coating and a preparing method of the same. The PTFE coating includes: a nanodiamond powder whose surface is treated with a plasma using a hydrogen-containing reactive gas to remove amorphous carbon, the nanodiamond powder being ground in a commercially available state and having a surface to which a functional group is attached; and a PTFE solution dispersing the nanodiamond powder.

公开(公告)号：US10647827B2

公开(公告)日：2020-05-12

申请号：US16075820

申请日：2017-02-03

Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： Dae-Soon Lim ,  Eung-seok Lee ,  Choonghyun Lee

IPC: C08J5/06 ,  C08K7/06 ,  C08L101/00 ,  D06M11/01 ,  D06M10/06 ,  C08K9/04 ,  D06M10/02 ,  D06M101/40

Abstract: Provided are an engineering plastic composite and a method for producing the same. The engineering plastic composite includes a carbon fiber having a surface modified by a hydrogen plasma and including a functional group and an engineering plastic. The carbon fiber is mixed with the engineering plastic to constitute a composite.

公开(公告)号：US20180016194A1

公开(公告)日：2018-01-18

申请号：US15637230

申请日：2017-06-29

Applicant: Korea University Research and Business Foundation

Inventor： Dae-Soon Lim ,  Eung-Seok Lee ,  Tae Hyun Kim ,  Choong Hyun Lee ,  Young Kyun Lim

IPC: C04B35/565 ,  C04B41/00 ,  B23K26/12 ,  B23K26/359 ,  C04B35/56 ,  C04B41/91 ,  C04B35/563

CPC classification number: C04B35/565 ,  B23K26/0006 ,  B23K26/0622 ,  B23K26/123 ,  B23K26/126 ,  B23K26/359 ,  B23K2103/30 ,  C04B35/5611 ,  C04B35/5626 ,  C04B35/563 ,  C04B41/0036 ,  C04B41/009 ,  C04B41/5001 ,  C04B41/85 ,  C04B41/91 ,  C04B2111/00344 ,  C04B35/56 ,  C04B41/4519 ,  C04B41/4556 ,  C04B41/4572

Abstract: Disclosed is a method for producing a carbide derived carbon layer with a dimple pattern. The method includes forming a dimple pattern on the surface of a carbide ceramic material and forming a carbide derived carbon layer thereon. Also disclosed is a carbide derived carbon layer with a dimple pattern produced by the method. The carbide derived carbon layer with dimple pattern has high wear resistance, good adhesion to a machine part, and excellent frictional characteristics. The carbide derived carbon layer can be applied to various fields, such as coating of carbide coated and carbide materials. Particularly, the carbide derived carbon layer is suitable for coating of machine parts (e.g., sliding parts, mechanical seals, piston rings, and compressor vanes) where excellent mechanical properties are needed.