A kind of preparation method of silicon carbide powder as organic composite material reinforcement
A composite material and silicon carbide powder technology, which is applied in the field of silicon carbide powder preparation, can solve the problems of inability to fill organic composite materials, fail to realize industrialization, and small thermal expansion coefficient, and achieves effective utilization, improved affinity, and dispersion. Excellent performance
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[0016] A method for preparing silicon carbide powder as an organic composite material reinforcement, characterized in that: comprising the following steps:
[0017] Step 1. Take SiC powder raw material with SiC content greater than or equal to 97% and median particle size D50 of 2.5-3.5 μm, send it into a ball mill for shaping treatment for 30-40 minutes, take it out, and set aside;
[0018] Step 2. Pickling and purifying the silicon carbide powder processed in step 1 with sulfuric acid. The density of sulfuric acid is 1.5-1.8. The amount of sulfuric acid added is 4% of the weight of the powder. After 2 hours of pickling and purification treatment, lead out the sulfuric acid solution , the powder is washed 5-7 times with ultrapure water, dried after washing, and purified silicon carbide is obtained, which is set aside;
[0019] Step 3, mix the purified silicon carbide obtained in step 2 with ultrapure water in a ratio of 2:3 by weight, stir evenly and add NaOH solution with a ...
Embodiment 1
[0027] A method for preparing silicon carbide powder as an organic composite material reinforcement, characterized in that: comprising the following steps:
[0028] Step 1. Take SiC powder raw materials with SiC content greater than or equal to 97.5% and median particle size D50 of 3.42 μm, and send them into a ball mill for shaping treatment for 30 minutes. The length-to-diameter ratio of the ball mill is less than 2, take it out, and set aside;
[0029] Step 2. The silicon carbide powder processed in step 1 is pickled and purified with sulfuric acid. The density of sulfuric acid is 1.5. The amount of sulfuric acid added is 4% of the powder weight. The body was washed 5 times with ultrapure water with a conductivity of 0.1, dried after washing, and purified silicon carbide was obtained for subsequent use;
[0030] Step 3. Mix the purified silicon carbide obtained in step 2 with ultrapure water in a ratio of 2:3 by weight. The conductivity of the ultrapure water is 1. After st...
Embodiment 2
[0035] A method for preparing silicon carbide powder as an organic composite material reinforcement, characterized in that: comprising the following steps:
[0036] Step 1. Take SiC powder raw materials with SiC content greater than or equal to 97.8% and median particle size D50 of 3.05 μm, and send them into a ball mill for shaping treatment for 40 minutes. The length-to-diameter ratio of the ball mill is less than 2, take it out, and set aside;
[0037] Step 2. The silicon carbide powder processed in step 1 is pickled and purified with sulfuric acid. The density of sulfuric acid is 1.8. The amount of sulfuric acid added is 4% of the weight of the powder. After 2 hours of pickling and purification treatment, the sulfuric acid solution is extracted, and the powder is The body was washed 7 times with ultra-pure water with a conductivity of 0.1, dried after washing to obtain purified silicon carbide, and set aside;
[0038] Step 3, mix the purified silicon carbide obtained in st...
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