CN102465442A - Method for preparing titanium dioxide coating on surface of carbon fiber - Google Patents
Method for preparing titanium dioxide coating on surface of carbon fiber Download PDFInfo
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- CN102465442A CN102465442A CN2010105457829A CN201010545782A CN102465442A CN 102465442 A CN102465442 A CN 102465442A CN 2010105457829 A CN2010105457829 A CN 2010105457829A CN 201010545782 A CN201010545782 A CN 201010545782A CN 102465442 A CN102465442 A CN 102465442A
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- carbon fiber
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- sol mixture
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Abstract
The invention relates to a method for preparing a titanium dioxide coating on the surface of carbon fiber. The method is characterized by comprising the following steps of: mixing titanium alkoxide with absolute ethyl alcohol according to a proportion of 1: 4 to form a sol mixture, and adjusting a pH value to 1-2 through acetic acid; drying the carbon fiber for 30min at a temperature of 100 DEG C, soaking the carbon fiber to the sol mixture, and clamping and pressing the carbon fiber by using an automatic padding machine so that the sol mixture is coated onto the carbon fiber; when the sol mixture is uniformly coated onto the carbon fiber, drying for 10min at a temperature of 80 DEG C for evaporating residual ethanol; and then curing at a temperature of 100 DEG C. According to the invention, the sol mixture is formed at normal temperature, so that requirements on manufacturing conditions can be greatly reduced. According to the method disclosed by the invention, thickness of the coating can be controlled. The carbon fiber with the titanium dioxide coating prepared by using the method disclosed by the invention keeps the flexibility and the knittability of coating-free carbon fiber, and simultaneously solves the problems that interfacial wettability and compatibility between the carbon fiber and certain composite material substrates are poor.
Description
Technical field
The invention belongs to technical field of surface, concrete relate to a kind of method for preparing coating of titanium dioxide at carbon fiber surface.
Background technology
Carbon fiber is a kind of composite fortifying fibre commonly used; It has low-density, high strength, high-modulus, low-thermal-expansion, radiation hardness, be prone to establishment processing and good characteristics such as heat, electrical property preferably, in Metal Substrate, polymer matrix composite, obtains application widely.But the carbon fiber antioxygenic property is relatively poor, in the air more than 400 ℃, promptly occur significantly weightless and the intensity reduction, and the wettability of carbon fiber and some matrix is bad, is difficult to form the composite of densification, function admirable.Therefore having hindered carbon fiber needs the application in lightweight, high-strength, high mold materials field in Aero-Space etc.
Forming fine and close protective coating at carbon fiber surface can address the above problem effectively.Wide " high temperature oxidation stability of radio frequency method coat carbon fiber " on " fibrous composite " (2005 03 phase 28-31 pages or leaves), delivered that wait of Dong Xing; Propose in this article to adopt radio frequency method to prepare the carbon fiber surface ORC; Concrete grammar is: under 700-800 ℃, carry out chemical vapour deposition (CVD) through radio frequency heating carbon fiber, this method is prone to carbon fiber surface is caused damage, and the control preparation process technological requirement is high; Complex equipments should not be carried out large-scale production.The preparation of prior art floating coat has chemical vapour deposition technique, physical vaporous deposition, electrochemical method and collosol and gel infiltration sintering method; Wherein utilization is that collosol and gel infiltration sintering legal system is equipped with coating the most widely; But this method need be passed through the hot setting processing links, is unfavorable for the enforcement of energy-conserving and environment-protective.
Summary of the invention
The present invention is directed to the above deficiency that exists in the prior art, a kind of preparation method of carbon fiber surface titanium dioxide coating is provided.
The present invention realizes through following technical scheme, the present invention includes following steps:
Pure titanium and absolute ethyl alcohol are formed collosol intermixture with the 1:4 mixed, through the vinegar acid for adjusting pH value to 1-2; Under 100 ℃, carbon fiber was carried out dried 30 minutes, then carbon fiber is immersed in the above-mentioned collosol intermixture, and on carbon fiber with automatic padder cramping, this collosol intermixture is coated on the carbon fiber; After collosol intermixture evenly is coated on the carbon fiber, at 80 ℃ of ethanol of drying 10 minutes evaporation residues down; Be cured at 100 ℃ afterwards.
The formation of collosol intermixture of the present invention is carried out at normal temperatures, so compared with prior art, can reduce the requirement to creating conditions greatly.Method in the carbon fiber surface titanium dioxide coated of the present invention, simple and easy to do, can carry out large-scale commercial production.The carbon fiber that adopts this method to produce with coating of titanium dioxide, its coating layer thickness is less than 1 μ m, and coating is smooth smooth.Can after carbon fiber is cooled to room temperature, reuse the collosol intermixture infiltration, and then slowly intensification makes solvent evaporates, this process can repeat at most 3 times, to a certain degree the controlling diaphragm layer thickness.Use the coating of titanium dioxide carbon fiber of this method preparation to keep compliance that no coat carbon fiber had and stitchability, solve interface wettability and consistency problem between carbon fiber and some matrices of composite material simultaneously.Use this carbon fiber or its braided fabric can with the compound acquisition composite of different matrix.
The specific embodiment
Pure titanium and absolute ethyl alcohol are formed collosol intermixture with the 1:4 mixed, through the vinegar acid for adjusting pH value to 1-2; Under 100 ℃, carbon fiber was carried out dried 30 minutes, then carbon fiber is immersed in the above-mentioned collosol intermixture, and on carbon fiber with automatic padder cramping, this collosol intermixture is coated on the carbon fiber; After collosol intermixture evenly is coated on the carbon fiber, at 80 ℃ of ethanol of drying 10 minutes evaporation residues down; Be cured at 100 ℃ afterwards.
Claims (1)
1. one kind prepares the method for coating of titanium dioxide at carbon fiber surface, it is characterized in that: pure titanium and absolute ethyl alcohol are formed collosol intermixture with the 1:4 mixed, through the vinegar acid for adjusting pH value to 1-2; Under 100 ℃, carbon fiber was carried out dried 30 minutes, then carbon fiber is immersed in the above-mentioned collosol intermixture, and on carbon fiber with automatic padder cramping, this collosol intermixture is coated on the carbon fiber; After collosol intermixture evenly is coated on the carbon fiber, at 80 ℃ of ethanol of drying 10 minutes evaporation residues down; Be cured at 100 ℃ afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105457829A CN102465442A (en) | 2010-11-16 | 2010-11-16 | Method for preparing titanium dioxide coating on surface of carbon fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105457829A CN102465442A (en) | 2010-11-16 | 2010-11-16 | Method for preparing titanium dioxide coating on surface of carbon fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102465442A true CN102465442A (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105457829A Pending CN102465442A (en) | 2010-11-16 | 2010-11-16 | Method for preparing titanium dioxide coating on surface of carbon fiber |
Country Status (1)
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| CN (1) | CN102465442A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105113213A (en) * | 2015-07-21 | 2015-12-02 | 上海工程技术大学 | Method for preparation of antioxidant composite coating on carbon fiber surface |
| CN106835684A (en) * | 2017-03-02 | 2017-06-13 | 昆明理工大学 | A kind of carbon fiber surface coats processing method |
-
2010
- 2010-11-16 CN CN2010105457829A patent/CN102465442A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105113213A (en) * | 2015-07-21 | 2015-12-02 | 上海工程技术大学 | Method for preparation of antioxidant composite coating on carbon fiber surface |
| CN105113213B (en) * | 2015-07-21 | 2017-04-05 | 上海工程技术大学 | A kind of method for preparing anti-oxidation composite coating in carbon fiber surface |
| CN106835684A (en) * | 2017-03-02 | 2017-06-13 | 昆明理工大学 | A kind of carbon fiber surface coats processing method |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120523 |