Fiber-reinforced brittle matrix composite

Patent metadata

Field	Value
Publication number	US-2021087110-A1
Application number	US-201816603561-A
Country	US
Kind code	A1
Filing date	Apr 9, 2018
Priority date	Apr 7, 2017
Publication date	Mar 25, 2021
Grant date	—

Abstract

There is provided a fiber-reinforced brittle matrix composite. The fiber-reinforced brittle matrix composite comprises a brittle matrix material (for example, a cementitious or ceramics material) and a coated fiber embedded in the brittle matrix material, wherein the coated fiber comprises a fiber (for example, polyethylene fiber, glass fiber, silicon carbide fiber, alumina fiber, mullite fiber) and a coating material (for example, carbon nanofibers, carbon nanotubes), which is non-covalently disposed on the fiber. A method for producing the fiber-reinforced brittle matrix composite is also provided. The method comprises providing a fiber, disposing a coating material on the fiber to form a coated fiber, wherein the coating material is non-covalently disposed on the fiber, and embedding the coated fiber in a brittle matrix material to obtain the fiber-reinforced brittle matrix composite.

First claim

1 . A fiber-reinforced brittle matrix composite comprising a brittle matrix material and a coated fiber embedded in the brittle matrix material, wherein the coated fiber comprises a fiber and a coating material which is non-covalently disposed on the fiber.

2 . The fiber-reinforced brittle matrix composite of claim 1 , wherein the coating material is disposed on the fiber by a non-covalent attractive interaction.

3 . (canceled)

4 . The fiber-reinforced brittle matrix composite of claim 1 , wherein the coating material is arranged in layers surrounding the fiber.

5 . (canceled)

6 . (canceled)

7 . The fiber-reinforced brittle matrix composite of claim 1 , wherein the coated fiber embedded in the brittle matrix material is adhered to the brittle matrix material by friction.

8 . The fiber-reinforced brittle matrix composite of claim 1 , wherein the brittle matrix material further comprises a silica-containing material.

9 . (canceled)

10 . The fiber-reinforced brittle matrix composite of claim 1 , wherein the brittle matrix material further comprises a plasticizer.

11 . (canceled)

12 . The fiber-reinforced brittle matrix composite of claim 1 , wherein the fiber comprises a material selected from the group consisting of a metallic fiber, an inorganic fiber, a polymeric fiber, and a carbon fiber.

13 . The fiber-reinforced brittle matrix composite of claim 1 , wherein the fiber is selected from the group consisting of steel fiber, polyethylene fiber, polypropylene fiber, polytetrafluoroethylene fiber, polyacrylate fiber, polyester fiber, carbon fiber, glass fiber, silicon carbide fiber, alumina fiber, and mullite fiber.

14 . The fiber-reinforced brittle matrix composite of claim 1 , wherein the coating material is a carbon-based coating material or a carbon-based nanomaterial.

15 . The fiber-reinforced brittle material composite of claim 1 , wherein the coating material is selected from the group consisting of graphite, charcoal, single-wall carbon nanotubes (SWCNTs), multi-wall carbon nanotubes (MWCNTs), carbon nanofibers (CNFs), fullerene, graphene, and a combination thereof.

16 . The fiber-reinforced brittle matrix composite of claim 1 , wherein the brittle matrix material is a cementitious material.

17 - 20 . (canceled)

21 . The fiber-reinforced brittle matrix composite of claim 1 , wherein the brittle matrix material is a ceramics material.

22 . (canceled)

23 . The fiber-reinforced brittle matrix composite of claim 21 , wherein the fiber is selected from the group consisting of glass fiber, silicon carbide fiber, alumina fiber, and mullite fiber.

24 . The fiber-reinforced brittle matrix composite of claim 21 , wherein the coating material comprises carbon nanotubes.

25 . (canceled)

26 . A method for preparing a fiber-reinforced brittle matrix composite, the method comprising providing a fiber, disposing a coating material on the fiber to form a coated fiber, wherein the coating material is non-covalently disposed on the fiber, and embedding the coated fiber in a brittle matrix material to obtain the fiber-reinforced brittle matrix composite.

27 . (canceled)

28 . (canceled)

29 . The method of claim 26 , wherein disposing the coating material on the fiber is carried out by a method selected from the group consisting of dip coating, die coating, extrusion coating, and a combination thereof.

30 . The method of claim 26 , wherein disposing the coating material on the fiber comprises self-assembling the coating material on the fiber.

31 . The method of claim 26 , wherein disposing the coating material on the fiber comprises contacting the fiber with the coating material in a solvent which exhibits a repulsive interaction with the fiber and the coating material.

32 - 34 . (canceled)

35 . The method of claim 26 , wherein embedding the coated fiber in the brittle matrix material comprises adding the coated fiber in a gradual manner to the brittle matrix material.

36 . (canceled)

37 . The method of claim 26 , wherein the brittle matrix material is a ceramics material, and wherein following embedding the coated fiber in the brittle matrix material, the resultant mixture is sintered at a temperature of at least 750° C.

Assignees

• Univ Nanyang Tech

Inventors

• Yang En-Hua
• He Shan

Classifications

• C04B35/5805

  based on borides · CPC title

• C04B35/01

  based on oxide ceramics · CPC title

• C04B35/58

  based on borides, nitrides, {i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides} or silicides {(containing free binder metal C22C29/00)} · CPC title

• C04B35/56

  based on carbides {or oxycarbides (containing free metal binder C22C29/00)} · CPC title

• C04B35/80

  Fibres, filaments, whiskers, platelets, or the like · CPC title