A kind of method of carbon fiber surface modification
A technology of surface modification and carbon fiber, which is applied in the fields of carbon fiber, fiber treatment, textiles and papermaking, etc. It can solve the problems of difficult preparation of boron nitride grains, improve surface roughness and surface activity, improve modification efficiency, The effect of low hydrothermal reaction temperature
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specific Embodiment approach 1
[0031] Embodiment 1: This embodiment provides a method for modifying the surface of carbon fibers, which is specifically completed according to the following steps: 1. Glue removal
[0032] Put 5g of carbon fiber into a Soxhlet extractor filled with a mixed solution of ethanol / acetone / tetrahydrofuran at a volume ratio of 1:1:1, and use the mixed solution to extract at 60°C for 15 hours to remove the sizing agent and impurities on the surface of the carbon fiber , and then soaked in ethanol solution and distilled water solution for 10 minutes respectively, after cleaning, place the carbon fiber in a blast drying oven at 100°C for 30 minutes to obtain carbon fiber with a clean surface;
[0033] 2. Generate boron nitride grains
[0034] (1) Prepare 0.01M boric acid solution and 0.005M sodium azide solution respectively, then add the boric acid solution to the sodium azide solution, and the volume ratio of the boric acid solution to the sodium azide solution is 1:1; Stir at ℃ for...
specific Embodiment approach 2
[0042]Specific embodiment two: This embodiment provides a carbon fiber surface modification method, which is specifically completed according to the following steps:
[0043] 1. Degumming
[0044] Put 5g of carbon fiber into a Soxhlet extractor filled with a mixed solution of ethanol / acetone / tetrahydrofuran at a volume ratio of 1:2:1, and use the mixed solution to extract at 50°C for 15 hours to remove sizing agents and impurities on the surface of the carbon fiber , then immerse in ethanol solution and distilled water solution for 5 minutes each, and after cleaning, place the carbon fiber in a blast drying oven at 120°C for 50 minutes to obtain carbon fiber with a clean surface;
[0045] 2. Generate boron nitride grains
[0046] (1) Prepare 0.02M boric acid solution and 0.01M sodium azide solution respectively, then add boric acid solution to sodium azide solution, the volume ratio of boric acid solution and sodium azide solution is 1:2, at 35 Stir at ℃ for 1.5h, the rotati...
specific Embodiment approach 3
[0054] Specific Embodiment Three: This embodiment provides a method for modifying the surface of carbon fibers, which is specifically completed according to the following steps: 1. Glue removal
[0055] Put 5g of carbon fiber into a Soxhlet extractor filled with a mixed solution of ethanol / acetone / tetrahydrofuran at a volume ratio of 1:2:2, and use the mixed solution to extract at 70°C for 24 hours to remove the sizing agent and impurities on the surface of the carbon fiber , then immerse in ethanol solution and distilled water solution for 8 minutes respectively, and after cleaning, place the carbon fiber in a blast drying oven at 150°C for 60 minutes to obtain carbon fiber with a clean surface;
[0056] 2. Generate boron nitride grains
[0057] (1) Prepare 0.03M boric acid solution and 0.008M sodium azide solution respectively, then add boric acid solution to sodium azide solution, the volume ratio of boric acid solution and sodium azide solution is 1:5, at 20 Stir at ℃ for...
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