High stack-density sheet structural melamine cyanurate and production method and application for flame-resistant material
A technology of melamine cyanuric acid and bulk density, applied in organic chemistry and other fields, can solve problems such as irregular product structure, easy pollution of the environment, and large water consumption
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Embodiment 1
[0115] In 500 liters of reactors, add 300 liters of water and 0.19kg tetramethylammonium hydroxide, stir 20 minutes at 40 ℃, 185kg melamine (purity 99.5%) and 187kg cyanuric acid (purity 98.5%) mixed homogeneously add, stir and heat, The temperature was raised to 80°C for 1 hour and a slurry formed. Keep at 80-90°C for 2 hours to obtain a flowable product slurry, which is put into a horizontal dryer and dried under vacuum. Dry the dried product with a water content of about 5%, heat it to 150°C, then raise it to 250°C in 70 minutes (keep it at 200°C for 20 minutes), keep it warm for 60 minutes, then vacuum devolatilize it for 20 minutes, and crush it to obtain 369kg with a purity of 99.9%. , the particle size is 3.55μm, and the bulk density is 0.72g / cm 3 , high bulk density sheet-like structure melamine cyanuric acid (hereinafter referred to as product) of 0.05% moisture content, its electron micrograph is shown in figure 1 .
Embodiment 2
[0117] In 500 liters of reactors, add 372 liters of water and 0.19kg tetramethylammonium hydroxide, stir at 40 ℃ for 20 minutes, 185kg gram of melamine (purity 99.5%) and 187kg cyanuric acid (purity 98.5%) are mixed homogeneously and add, stirring and heating , the temperature was raised to 80° C. in 1 hour, and a slurry was formed. Keep at 80-90°C for 2 hours to obtain a flowable product slurry, which is put into a horizontal dryer and dried under vacuum. Dry the product with a moisture content of about 5%, heat it to 150°C, then raise it to 250°C in 70 minutes (keep it at 200°C for 20 minutes), keep it warm for 60 minutes, then vacuum devolatilize it for 20 minutes, and crush it to obtain 367kg with a purity of 99.9%. , the particle size is 2.95μm, and the bulk density is 0.58g / cm 3 , a product with a moisture content of 0.06%.
Embodiment 3
[0119] Add 224 liters of water and 0.19kg tetramethylammonium hydroxide in 500 liters of reactors, stir 20 minutes at 40 ℃, 185kg gram of melamine (purity 99.5%) and 187kg cyanuric acid (purity 98.5%) mix homogeneously add, stir and heat , the temperature was raised to 80° C. in 1 hour, and a slurry was formed. Keep at 80-90°C for 2 hours to obtain a flowable product slurry, which is put into a horizontal dryer and dried under vacuum. Dry the dried product with a water content of about 5%, heat it to 150°C, then raise it to 250°C in 70 minutes (keep it at 200°C for 20 minutes), keep it warm for 60 minutes, then vacuum devolatilize it for 20 minutes, and crush it to obtain 371kg with a purity of 94.7%. , the particle size is 4.15μm, and the bulk density is 0.79g / cm 3 , a product with a moisture content of 0.10%.
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