A kind of inorganic salt/organic polymer composite hygroscopic material and its preparation method
A technology of organic polymer and hygroscopic material, applied in the field of inorganic salt/organic polymer composite hygroscopic material and its preparation, can solve the problems of difficult preparation of composite hygroscopic material, complex production conditions, limited hygroscopic capacity, etc., and achieves good flexibility and adaptability, excellent hygroscopic performance, low production cost
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Embodiment 1
[0036] Example 1: Mix sodium chloride and magnesium chloride uniformly to obtain a mixed salt, wherein the mass fraction of magnesium chloride is 0.5%, and the total mass of the mixed salt is 50 g. Take 5 g of sodium polyacrylate resin balls, soak them in deionized water, and swell for 6 hours. The swollen sodium polyacrylate resin balls were taken out by water filtration, put into mixed salt and blended and coated for 5 minutes, so that the mixed salt evenly covered the surface of the sodium polyacrylate resin balls to obtain a composite material. The composite material was dried and dehydrated at 120°C for 5 hours, and then the outermost layer of salt shell was removed to obtain the inorganic salt / organic polymer composite hygroscopic material W6M0.51205.
[0037] After measurement, the average particle size of the composite moisture-absorbing material W6M0.51205 is 0.830cm, the average mass is 0.1561g, and the density is 0.52g / cm 3; Among them, the mass fractions of sodium...
Embodiment 2
[0039] Embodiment 2: table salt and magnesium chloride are uniformly mixed to obtain mixed salt, wherein the mass fraction of magnesium chloride is 1%, and the total mass of mixed salt is 50g. Take 10 g of sodium polyacrylate resin balls, soak them in deionized water, and swell for 4 hours. The swollen sodium polyacrylate resin balls were taken out by water filtration, put into mixed salt and blended and coated for 4 minutes, so that the mixed salt evenly covered the surface of the sodium polyacrylate resin balls to obtain a composite material. The composite material was dried and dehydrated at 140°C for 4 hours, and then the outermost layer of salt shell was removed to obtain the inorganic salt / organic polymer composite hygroscopic material W4M11404.
[0040] It has been determined that the average particle size of the composite hygroscopic material W4M11404 is 0.790cm, the average mass is 0.1267g, and the density is 0.49g / cm 3 ; Among them, the mass fractions of sodium poly...
Embodiment 3
[0042] Example 3: Mix industrial salt and magnesium chloride uniformly to obtain mixed salt, wherein the mass fraction of magnesium chloride is 2%, and the total mass of mixed salt is 50g. Take 6 g of sodium polyacrylate resin balls, soak them in deionized water, and swell for 6 hours. The swollen sodium polyacrylate resin balls were taken out by water filtration, put into mixed salt and blended and coated for 5 minutes, so that the mixed salt evenly covered the surface of the sodium polyacrylate resin balls to obtain a composite material. The composite material is dried and dehydrated at 160°C for 4 hours, and then the outermost layer of salt shell is removed to obtain the inorganic salt / organic polymer composite hygroscopic material W6M21604.
[0043] It has been determined that the average particle size of the composite hygroscopic material W6M21604 is 0.770cm, the average mass is 0.1581g, and the density is 0.66 g / cm 3 ; Among them, the mass fractions of sodium polyacryla...
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