Porous medium burner material and preparation method thereof
A porous media and burner technology, which is applied in the field of porous media burner materials and its preparation, can solve the problems of undeveloped energy, low energy utilization efficiency, and serious environmental pollution, and achieve excellent thermal shock resistance and reduce CO2 and emissions of pollutants, the effect of high combustion rates
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Embodiment 1
[0042] The preparation of embodiment 1:
[0043] Form the ingredients according to the weight percentage of the ceramic powder in Example 1 in Table 1, add a binder and additives other than the defoamer, grind together for 4 hours through a ball mill, finally add the defoamer silicone+0.05wt%, continue Ball milling for 1 hour to obtain a uniform slurry, adding appropriate water to control the viscosity of the slurry at 2Pa.s. The organic foam is pretreated to remove the inter-network film, 20PPI polyurethane foam is immersed in 20% NaOH solution, hydrolyzed at 40°C for 3 hours, rubbed repeatedly, washed and dried. Then cut into various sizes as needed. Immerse the foam in the prepared slurry, squeeze out the excess slurry, repeat this process many times, and reach the green body density of 2.5g / cm 3 . The prepared porous green body is firstly dried naturally at room temperature for 24 hours, and then dried in an oven at 110° C. for 24 hours. When the water content is contro...
Embodiment 2
[0044] The preparation of embodiment 2:
[0045] Form the ingredients according to the weight percentage of the ceramic powder in Example 2 in Table 1, add a binder and additives other than the defoamer, grind together for 3 hours through a ball mill, finally add the defoamer silicone+0.15wt%, and continue Ball milling for 1.5 hours to obtain a uniform slurry, adding appropriate water to control the viscosity of the slurry at 3Pa.s. The organic foam is pretreated to remove the inter-network film, 30PPI polyurethane foam is immersed in a 15% NaOH solution, hydrolyzed at 50°C for 4 hours, rubbed repeatedly, washed and dried. Then cut into various sizes as needed. Immerse the foam into the prepared slurry, squeeze out the excess slurry, repeat this process many times, and reach the green body density of 2.0g / cm 3 . The prepared porous green body is firstly dried naturally at room temperature for 26 hours, and then dried in an oven at 100° C. for 24 hours. When the water conten...
Embodiment 3
[0046] The preparation of embodiment 3:
[0047] Form the batching according to the weight percentage of the ceramic powder of Example 3 in Table 1, add binders and additives other than the defoamer, grind together for 2 hours through a ball mill, finally add defoamer silicone+0.20wt%, continue Ball milling for 2 hours to obtain a uniform slurry, adding appropriate water to control the viscosity of the slurry at 4Pa.s. The organic foam is pretreated to remove the inter-network film, 40PPI polyurethane foam is immersed in a 10% NaOH solution, hydrolyzed at 50°C for 6 hours, rubbed repeatedly, washed and dried. Then cut into various sizes as needed. Immerse the foam in the prepared slurry, squeeze out the excess slurry, repeat this process many times, and reach the green body density of 1.5g / cm 3 . The prepared porous green body is firstly dried naturally at room temperature for 30 hours, and then dried in an oven at 90° C. for 24 hours. When the water content is controlled t...
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