Polyethylene wax coated stable potassium ferrate and preparation method thereof
A technology of polyethylene wax and potassium ferrate, which is applied in the direction of flocculation/sedimentation water/sewage treatment, sterilization/microdynamic water/sewage treatment, etc., can solve problems such as the use method and effect not given, and achieve improved coating The effect of high efficiency and stability, easy operation and simple process
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Embodiment 1
[0023] According to the mass ratio of polyethylene wax and potassium ferrate of 3:1, respectively weigh 30g polyethylene wax and potassium ferrate with a purity of 10g above 95%, first place the polyethylene wax in a beaker, and the polyethylene wax It is a commercially available product with a molecular weight of 2000-3000, a melting point of 90-110°C and a density of 0.95g / cm 3 , the viscosity is 650mPa·s. Put it on a constant temperature heating magnetic stirrer and heat it to 110°C to make it melt completely, keep it in a molten state at a constant temperature of 100°C, add potassium ferrate, stir and disperse at a stirring speed of 600r / min for 40min, and move the beaker to another unheated magnetic stirrer Continue to stir on the mixer until the speed slows down, and then let it cool naturally. After solidification, grind to 170-200 mesh, and dry in a vacuum oven at 40°C for 2 hours to obtain polyethylene wax-coated stable potassium ferrate. Determination of the coatin...
Embodiment 2
[0025] According to the mass ratio of polyethylene wax and potassium ferrate of 5:1, weigh 50g polyethylene wax and potassium ferrate of 10g purity more than 95% respectively, repeat the preparation method of Example 1, measure the coating of this finished product Rate, 10-day water absorption rate and release data in water are listed in Table 1, and the scanning electron micrograph is shown in figure 2 , the results of infrared absorption spectroscopy are shown in image 3 shown. The release curve of the finished product in water is shown in Figure 4 Shown, its sustained-release kinetic equation and related data are shown in Table 2.
Embodiment 3
[0027] According to the mass ratio of polyethylene wax and potassium ferrate of 8:1, take by weighing 80g polyethylene wax and potassium ferrate of 10g purity more than 95% respectively, repeat the preparation method of Example 1, measure the coating of this finished product Rate, 10-day water absorption rate and release data in water are listed in Table 1, and the scanning electron micrograph is shown in figure 2 shown. The release curve of the finished product in water is shown in Figure 4 Shown, its sustained-release kinetic equation and related data are shown in Table 2.
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