Electrochemical depositions applied to nanotechnology composites
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B41M-005/20
C25D-011/00
D04H-001/00
B32B-017/10
B32B-009/04
출원번호
US-0691022
(2007-03-26)
등록번호
US-8318307
(2012-11-27)
발명자
/ 주소
Byrd, Norman R.
Amundson, Stephen C.
Coker, III, Robert H.
출원인 / 주소
The Boeing Company
대리인 / 주소
Alston & Bird LLP
인용정보
피인용 횟수 :
0인용 특허 :
19
초록▼
A method of improving the material properties of a composite by electrodepositing various polymers, organic compounds or inorganic compounds onto each individual carbon (graphite) fiber strand, whether individual fiber or as a fabric to form an homogeneous chemically-bonded composite as opposed to t
A method of improving the material properties of a composite by electrodepositing various polymers, organic compounds or inorganic compounds onto each individual carbon (graphite) fiber strand, whether individual fiber or as a fabric to form an homogeneous chemically-bonded composite as opposed to the formation of a heterogeneous, non-chemically bonded composite. Thus, electrodeposition forms a unique discrete interface at the molecular layer (nanolayer) between the reinforcement (fiber) and the matrix (resin) over as opposed to any previous resin infusion process.
대표청구항▼
1. A composite article comprising a carbon fiber or carbon fiber cloth having an outer polymeric nanomolecular layer covalently bonded thereto, the polymeric nanomolecular layer comprising an organic compound selected from the group consisting of carboxymethylcellulose, phenyl phosphinic acid, pheny
1. A composite article comprising a carbon fiber or carbon fiber cloth having an outer polymeric nanomolecular layer covalently bonded thereto, the polymeric nanomolecular layer comprising an organic compound selected from the group consisting of carboxymethylcellulose, phenyl phosphinic acid, phenyl boronic acid, poly isobutylene alt maleic acid, and combinations thereof. 2. The composite article of claim 1, wherein the polymeric nanomolecular layer has a thickness on the order of one molecular layer of said organic compound. 3. The composite article of claim 1, wherein the carbon fiber or carbon fiber cloth is embedded into a cured resin matrix. 4. A composite article comprising a carbon fiber or carbon fiber cloth having an outer polymeric nanomolecular layer covalently bonded thereto, the polymeric nanomolecular layer comprising carboxymethylcellulose. 5. The composite article of claim 4, wherein the carbon fiber or carbon fiber cloth is embedded into a cured resin matrix. 6. An article having a nanomolecular resin layer covalently bonded thereon formed by a. providing an aqueous solution comprising an organic compound contained in a non-conducting container;b. connecting a direct current source to a carbon fiber;c. providing a graphite rod;d. combining the fiber, the aqueous solution, and the graphite rod in the non-conducting container with a basic substance;e. attaching a first power lead of the direct current source to the graphite rod which acts as the cathode, and a second power lead to the carbon fiber as the anode to ionize the aqueous solution; andf. applying an electric potential from said direct current source to cause the ionized aqueous solution to flow to an anodic substrate; andg. creating a nanomolecular layer comprising the organic compound that is covalently bonded to said carbon fiber, wherein the organic compound comprises carboxymethylcellulose, phenyl phosphinic acid, phenyl boronic acid, poly isobutylene alt maleic acid, or combinations thereof. 7. The article of claim 6, wherein the basic substance comprises sodium hydroxide, ammonium hydroxide, or triethylamine. 8. The article of claim 6, wherein the process of forming the article further comprises the step of washing excess organic compound from the nanomolecular layer to leave an organic nanolayer that is covalently bonded to said carbon fiber. 9. The composite article of claim 6, wherein the carbon fiber is embedded into a cured resin matrix. 10. An article having a nanomolecular resin layer covalently bonded thereon formed by connecting an anodic lead of a direct current source to a carbon fiber or carbon cloth;advancing the carbon fiber or carbon cloth through a first bath in a continuous manner, the first bath comprising an aqueous solution of an organic compound or inorganic compound, a basic substance, and a graphite rod that is connected to a cathodic lead of the direct current source;passing an electric current from said graphite rod to said carbon fiber or carbon cloth;electrodepositing a nanomolecular layer comprising the organic or inorganic compound on the carbon fiber or carbon cloth as it is being advanced through the first bath; andadvancing the carbon fiber or carbon cloth having a nanomolecular layer through a second bath in a continuous manner, the second bath comprising a water or alkaline solution that removes excess chemicals from the nanomolecular layer, and wherein the organic or inorganic compound comprises carboxymethylcellulose, phenyl phosphinic acid, phenyl boronic acid, poly isobutylene alt maleic acid, polysiloxane, or combinations thereof. 11. The process of claim 10, wherein the second bath comprises a basic solution. 12. The process of claim 10, wherein the second bath comprises sodium hydroxide, ammonium hydroxide, or triethylamine. 13. The article of claim 10, wherein the organic compound comprises a polysiloxane polymer. 14. An article having a nanomolecular resin layer covalently bonded thereon formed by a. providing an aqueous solution comprising an organic compound contained in a non-conducting container;b. connecting a direct current source to a carbon fiber;c. providing a graphite rod;d. combining the fiber, the aqueous solution, and the graphite rod in the non-conducting container with a basic substance;e. attaching a first power lead of the direct current source to the graphite rod which acts as the cathode, and a second power lead to the carbon fiber as the anode to ionize the aqueous solution; andf. applying an electric potential from said direct current source to cause the ionized aqueous solution to flow to an anodic substrate; andg. creating a nanomolecular layer comprising carboxymethylcellulose covalently bonded to said carbon fiber. 15. The composite article of claim 14, wherein the carbon fiber is embedded into a cured resin matrix. 16. An article having a nanomolecular resin layer covalently bonded thereon formed by connecting an anodic lead of a direct current source to a carbon fiber or carbon cloth;advancing the carbon fiber or carbon cloth through a first bath in a continuous manner, the first bath comprising an aqueous solution of an organic compound, a basic substance, and a graphite rod that is connected to a cathodic lead of the direct current source;passing an electric current from said graphite rod to said carbon fiber or carbon cloth;electrodepositing a nanomolecular layer comprising carboxymethylcellulose on the carbon fiber or carbon cloth as it is being advanced through the first bath; andadvancing the carbon fiber or carbon cloth having a nanomolecular layer through a second bath in a continuous manner, the second bath comprising a water or alkaline solution that removes excess chemicals from the nanomolecular layer.
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이 특허에 인용된 특허 (19)
Naarmann Herbert (Wattenheim DEX), Coating carbon fibers.
Deichert William G. (Macedon NY) Friends Gary D. (Ontario NY) Melpolder John B. (Hilton NY) Park Joon S. (Rochester NY), Polysiloxane composition and biomedical devices.
Bell James P. (Storrs CT) Scola Daniel A. (Glastonbury CT) Liang Jengli (Storrs CT), Process for forming methacrylamide polymer prepreg composite by electropolymerization.
Nakama Katsumi (Shizuoka JPX) Satoh Hiroyuki (Shizuoka JPX), Process for producing electrically conductive polymer film by electrolytic polymerization.
Scala Luciano C. (Murrysville Boro PA) Fuller Timothy J. (Berkeley Heights NJ) Alvino William M. (Penn Hills PA), Reinforced composites made by electro-phoretically coating graphite or carbon.
Balaba Willy M. (Monroeville PA) Armstrong George H. (New Kensington PA) Kauffman Suzanne (Apollo PA) Anyalebechi Princewill N. (Pittsburgh PA), Siloxane coating process for carbon or graphite substrates.
Jakubowski James J. (Midland MI) Subramanian Ravanasamudram V. (Pullman WA), Treatment of carbon fibers to decrease electrical hazards of conductive fiber fragment release.
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