Post-coating composition for reinforcement fibers

Patent metadata

Field	Value
Publication number	US-2018282938-A1
Application number	US-201615765758-A
Country	US
Kind code	A1
Filing date	Oct 7, 2016
Priority date	Oct 8, 2015
Publication date	Oct 4, 2018
Grant date	—

Abstract

An aqueous post-coat composition for coating a fiber tow is disclosed. The aqueous composition includes about 0.5 to about 5.0 wt. % solids of a film former and about 0.05 to about 2.0 wt. % solids of a compatibilizer. The compatibilizer may be at least one of a silicone-based coupling agent, a titanate coupling agent, a zirconate coupling agent, gluteric dialdehyde, and a quaternary ammonium antistatic agent.

First claim

1 . A composition for coating a fiber, the composition comprising:
about 0.5 to about 5.0 wt. % solids of a film former, said film former comprising at least one of polyvinylpyrrolidone, polyvinylacetate, and polyurethane; and about 0.05 to about 2.0 wt. % solids of a compatibilizer, said compatibilizer comprising at least one of a silicone-based coupling agent, a titanate coupling agent, a zirconate coupling agent, organic dialdehyde, and a quaternary ammonium antistatic agent; and water.

2 . The composition of claim 1 , wherein said fiber comprises at least one of glass, carbon, aramid, polyesters, polyolefins, polyamides, silicon carbide (SiC), and boron nitride fibers.

3 . The composition of claim 2 , wherein said fiber is a carbon fiber bundle comprising no greater than 12,000 filaments.

4 . The composition of claim 2 , wherein said fiber is a carbon fiber bundle comprising between about 1,000 and about 6,000 filaments.

5 . (canceled)

6 . The composition of claim 1 , wherein said film former consists of polyvinylpyrrolidone.

7 . The composition of claim 6 , wherein said polyvinylpyrrolidone has a molecular weight of 1,000,000 to 1,700,000.

8 . The composition of claim 1 , wherein said silicone-based coupling agent comprises at least one of γ-aminopropyltriethoxysilane (A-1100), n-trimethoxy-silyl-propyl-ethylene-diamine (A-1120), γ-methacryloxypropyltrimethoxysilane (A-174), γ-glycidoxypropyltrimethoxysilane (A-187), methyl-trichlorosilane (A-154), methyl-trimethoxysilane (A-163), γ-mercaptopropyl-trimethoxy-silane: (A-189), bis-(3-[triethoxysilyl]propyl)tetrasulfane (A-1289), γ-chloropropyl-trimethoxy-silane (A-143), vinyl-triethoxy-silane (A-151), vinyl-tris-(2-methoxyethoxy)silane (A-172), vinylmethyldimethoxysilane (A-2171), vinyl-triacetoxy silane (A-188), octyltriethoxysilane (A-137), and methyltriethoxysilane (A-162).

9 . The composition of claim 1 , wherein said silicone-based coupling agent is a mixture of aminopropyltriethoxysilane (A-1100) and at least one of methyl-trimethoxysilane (A-163) and γ-methacryloxypropyltrimethoxysilane (A-174).

10 . The composition of claim 1 , wherein said silicone-based coupling agent comprises aminopropyltriethoxysilane (A-1100) and methyl-trimethoxysilane (A-163) in a ratio of 1:1 to 3:1.

11 . The composition of claim 1 , wherein said silicone-based coupling agent comprises aminopropyltriethoxysilane (A-1100) and γ-methacryloxypropyltrimethoxysilane (A-174) in a ratio of 1:1 to 3:1.

12 . The composition of claim 1 , wherein said film former comprises polyvinylpyrrolidone and wherein said compatibilizer comprises aminopropyltriethoxysilane (A-1100) and methyl-trimethoxysilane (A-163) in a ratio of 1:1 to 3:1 and triethylalkyletherammonium sulfate.

13 . The composition of claim 1 , wherein said film former comprises polyvinylpyrrolidone and wherein said compatibilizer comprises aminopropyltriethoxysilane (A-1100) and γ-methacryloxypropyltrimethoxysilane (A-174) in a ratio of 1:1 to 3:1 and triethylalkyletherammonium sulfate.

14 . A composition for coating a fiber, the composition consisting essentially of:
a film former, said film former comprising at least one of polyvinylpyrrolidone, polyvinylacetate, and polyurethane; a compatibilizer, said compatibilizer comprising at least one of a silicone-based coupling agent, a titanate coupling agent, a zirconate coupling agent, gluteric dialdehyde, and a quaternary ammonium antistatic agent; and water.

15 - 18 . (canceled)

19 . A process for compatibilizing a plurality of reinforcement fibers with a polymer matrix material, the process comprising:
coating said reinforcement fibers with a coating composition comprising:
about 0.5 to about 5.0 wt. % solids of a film former, said film former comprising at least one of polyvinylpyrrolidone, polyvinylacetate, and polyurethane;
about 0.05 to about 2.0 wt. % solids of a compatibilizer, said compatibilizer comprising at least one of a silicone-based coupling agent, a titanate coupling agent, a zirconate coupling agent, organic dialdehyde, and a quaternary ammonium antistatic agent; and
water.

20 . The process of claim 19 , wherein said reinforcement fibers comprise at least one of glass, carbon, aramid, polyesters, polyolefins, polyamides, silicon carbide (SiC), and boron nitride fibers.

21 . The process of claim 19 , wherein said reinforcement fibers are carbon fibers.

22 . The process of claim 19 , wherein prior to coating said reinforcement fibers with said coating composition, said reinforcement fibers are coated with a sizing composition and said sizing composition is dried.

23 . The process of claim 22 , wherein said sizing composition comprises at least one of an epoxy, vinyl ester, and urethane film former.

24 . The process of claim 19 , wherein said film former comprises polyvinylpyrrolidone.

25 . (canceled)

26 . The process of claim 19 , wherein said silicone-based coupling agent is a mixture of aminopropyltriethoxysilane (A-1100) and at least one of methyl-trimethoxysilane (A-163) and γ-methacryloxypropyltrimethoxysilane (A-174).

27 . The process of claim 19 , wherein said silicone-based coupling agent comprises aminopropyltriethoxysilane (A-1100) and methyl-trimethoxysilane (A-163) in a ratio of 1:1 to 3:1.

28 . The process of claim 19 , wherein said silicone-based coupling agent comprises aminopropyltriethoxysilane (A-1100) and γ-methacryloxypropyltrimethoxysilane (A-174) in a ratio of 1:1 to 3:1.

29 . The process of claim 19 , wherein said quaternary ammonium antistatic agent comprises triethylalkyletherammonium sulfate.

30 . The process of claim 19 , wherein said organic dialdehyde comprises one or more of gluteric dialdehyde, glycoxal, malondialdehyde, succidialdehyde, and phthaladldehyde.

31 . (canceled)

32 . A carbon fiber coated with a composition comprising:
about 0.5 to about 5.0 wt. % solids of a film former, said film former comprising at least one of polyvinylpyrrolidone, polyvinylacetate, and polyurethane; about 0.05 to about 2.0 wt. % solids of a compatibilizer, said compatibilizer comprising at least one of a silicone-based coupling agent, a titanate coupling agent, a zirconate coupling agent, gluteric dialdehyde, and a quaternary ammonium antistatic agent; and water, wherein said carbon fiber comprises less than about 12,000 filaments.

33 - 37 . (canceled)

38 . The carbon fiber of claim 32 , wherein said carbon fiber comprises about 2,000 to about 3,000 filaments.

39 . The carbon fiber of claim 32 , wherein said carbon fiber has a width of between about 0.5 mm to about 4.0 mm.

40 . The carbon fiber of claim 32 , wherein said carbon fiber is a carbon has been coated with a sizing composition comprising at least one of an epoxy, vinyl ester, and urethane film former.

41 . A fiber-reinforced composite comprising:
a plurality of reinforcement fibers having a coating thereon, said coating comprising:
about 0.5 to about 5.0 wt. % solids of a film former, said film former comprising at least one of polyvinylpyrrolidone, polyvinylacetate, and polyurethane;
about 0.05 to about 2.0 wt. % solids of a compatibilizer, said compatibilizer comprising at least one of a silicone-based coupling agent, a titanate coupling agent, a zirco

Assignees

• Ocv Intellectual Capital Llc

Inventors

• Hartman David
• Santos Christian Espinoza
• Molnar David L

Classifications

• D06M15/3562

  containing nitrogen · CPC title

• D06M13/46

  Compounds containing quaternary nitrogen atoms (hydrazinium compounds D06M13/338; betaines, sulfo-betaines D06M13/342) · CPC title

• D06M13/513

  with at least one carbon-silicon bond · CPC title

• D06M15/263 Primary

  of unsaturated carboxylic acids; Salts or esters thereof · CPC title

• C09D139/06

  Homopolymers or copolymers of N-vinyl-pyrrolidones · CPC title