Preparation method of a high-strength, high-wear-resistance monolithic porous carbon material
A high-wear-resistance, integral technology, used in ceramic products, other household appliances, household appliances, etc., can solve the problems of low strength and easy powdering, and achieve high mechanical strength, excellent wear resistance, and mild reaction conditions. Effect
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Embodiment 1
[0024] Embodiment 1 (with guanidine hydrochloride as acid modifier)
[0025] Add 2.6g of guanidine hydrochloride into 4ml of glyoxal solution with a concentration of 50mmol / l, stir at room temperature until completely dissolved, and mark the solution as A; dissolve 2.930g of resorcinol in 3ml of deionized water at room temperature, and mark the solution as B ; Pour solution B into solution A, add hexamethylenetetramine, stir at room temperature until completely dissolved, and mark the solution as C; pour solution C into the reactor, react at 90°C for 4 hours, take out the product after cooling and dry it; The polymer was placed in an argon atmosphere with a flow rate of 100ml / min, and the temperature was raised to 700°C at a heating rate of 2°C / min, kept for 2 hours, cooled to room temperature and taken out. The sample yield was 44.3%, and the specific surface area was about 600m 2 / g, the radial compressive strength is about 600N / cm, and the test wear rate is 1.7wt.%.
Embodiment 2
[0026] Embodiment 2 (with aspartic acid as acid modifier)
[0027] Add 0.573g of aspartic acid into 6ml of formaldehyde solution, stir at room temperature until completely dissolved, and mark the solution as A; dissolve 2.237g of phenol in 4ml of ethanol at room temperature, and mark the solution as B; pour solution B into solution A, and add more Polyoxymethylene, stir at room temperature until it is completely dissolved, and the solution is marked as C; pour solution C into the reactor, react at 90°C for 4 hours, take out the product after cooling and dry it; place the obtained polymer in an argon atmosphere, and the flow rate is 100ml / min , heated up to 800°C at a heating rate of 1°C / min, kept for 2 hours, cooled to room temperature and taken out. The sample yield was 50.6%, and the specific surface area was 670m 2 / g, the radial compressive strength is about 400N / cm, and the test wear rate is 1.4wt.%.
Embodiment 3
[0028] Embodiment 3 (with guanidine hydrochloride as acid modifier)
[0029] Add 0.687g of guanidine hydrochloride to 4ml of formaldehyde solution, add 40μl of 5mol / l potassium carbonate solution, stir at room temperature until completely dissolved, and mark the solution as A; dissolve 2.930g of resorcinol in 4ml of deionized water at room temperature, and mark the solution as It is B; pour solution B into solution A, add hexamethylenetetramine, stir at room temperature until completely dissolved, and mark the solution as C; pour solution C into the reactor, react at 90°C for 4 hours, take out the product after cooling and dry it; The obtained polymer was placed in an argon atmosphere with a flow rate of 100ml / min, raised to 1000°C at a heating rate of 2°C / min, kept for 2 hours, cooled to room temperature and taken out. The sample yield was 45.7%, and the specific surface area was about 630m 2 / g, the radial compressive strength is about 1000N / cm, and the test wear rate is on...
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