Method for manufacturing carbon fiber surface titanium dioxide coating
A technology of titanium dioxide and carbon fiber, which is applied in the fields of carbon fiber, fiber treatment, textiles and papermaking, etc., can solve the problems of complex equipment, carbon fiber surface damage, unsuitable for large-scale production, etc., and achieve the effect of smooth and smooth coating
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example 1
[0022] Example 1: Take 10 g of tetra-IM titanate, 2 g of water, and 60 g of methanol, add acetic acid to make the solution pH=3, and stir for 2 hours to obtain a titanium dioxide precursor solution.
[0023] The carbon fibers are produced by Jilin Carbon Factory, with a diameter of 6-8 μm, and each bundle of carbon fibers has 1000 monofilaments.
[0024] After the carbon fiber bundles were soaked in acetone for 2 minutes, rinsed with deionized water and dried, they were soaked in 10% (volume concentration) nitric acid for 20 minutes for surface oxidation etching, and then infiltrated with the above-mentioned titanium dioxide precursor solution for 5 minutes. Ultrasonic vibration at 120kHz. The cellulose bundle was separated from the precursor at a speed of 0.5mm / s, and the excess precursor on the surface was removed by mechanical extrusion, dried at room temperature for 10 minutes, heated to 100°C at a rate of 4°C per minute, and then held at a constant temperature for 30 minu...
example 2
[0025] Example 2: Carbon fiber is the same as Example 1.
[0026] Take 10 g of tetra-IM titanate, 2 g of water, and 80 g of ethanol, add acetic acid to make the solution pH=3, and stir for 4 hours to obtain a titanium dioxide precursor solution.
[0027] After the carbon fiber bundles were soaked in acetone for 2 minutes, rinsed with deionized water and dried, they were soaked in 10% (volume concentration) nitric acid for 20 minutes for surface oxidation etching, and then infiltrated with the above-mentioned titanium dioxide precursor solution for 15 minutes. The precursor is separated from the precursor at a speed of 10mm / s, and the excess precursor on the surface is removed by drying, dried at room temperature for 20 minutes, heated to 120°C at a rate of 4°C per minute, and kept at a constant temperature for 30 minutes. After the fiber bundle is cooled to room temperature After repeating the above process of infiltration, drying and heating of the precursor once, the tempera...
example 3
[0028] Example 3: Carbon fiber is the same as Example 1.
[0029] Take 10 g of tetra-IM titanate, 2 g of water, and 80 g of n-butanol, add acetic acid to make the solution pH=3, and stir for 4 hours to obtain a titanium dioxide precursor solution.
[0030] The carbon fiber bundles were soaked in acetone for 2 minutes, rinsed with deionized water and dried, and then soaked in 10% (volume concentration) nitric acid for 20 minutes for surface oxidation etching. The excess precursor on the surface was removed by sucking dry, and the above-mentioned titanium dioxide precursor solution was infiltrated for 30 minutes, and the infiltration process was ultrasonically oscillated at 120 kHz. After the cellulose bundle was taken out, it was dried at room temperature for 10 minutes, heated to 150°C at a rate of 4°C per minute, and then kept at a constant temperature for 60 minutes. The temperature was raised to 450°C at a rate of 4°C per minute, then kept at a constant temperature for 60 ...
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Abstract
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