A kind of preparation method of highly dispersible ito powder
A high-dispersion, powder technology, applied in chemical instruments and methods, inorganic chemistry, tin oxide, etc., can solve the problems of unsatisfactory dispersion, more agglomeration, and low sintering activity of ITO powder, and achieve less hard agglomeration, Reduce agglomeration and good fluidity
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Embodiment 1
[0024] The present embodiment provides a kind of preparation method of highly dispersible ITO powder, comprises the following steps:
[0025] (1) Weigh metal In and add to HNO 3 Completely dissolved in solution, according to In 2 o 3 / SnO 2 The mass ratio is 9:1, weigh SnCl 4 ·5H 2 O white crystals are added in the indium salt solution, stirred evenly to prepare the mixed salt solution;
[0026] (2) Take NH with a pH value of 7 4 AC buffer solution, adding a composite dispersant to the buffer solution; the amount of the composite dispersant added is 4% of the total amount of ITO powder; the composite dispersant is sodium dodecylsulfonate with a mass ratio of 1:2:1 , pregelatinized starch and polyvinylpyrrolidone;
[0027] (3) Add ammonia water and mixed salt solution dropwise to the buffer solution at the same time, and during the dropping process, adjust the drip rate of ammonia water so that the pH value of the solution remains basically unchanged, and generate an ind...
Embodiment 2
[0033] The present embodiment provides a kind of preparation method of highly dispersible ITO powder, comprises the following steps:
[0034] (1) Weigh metal In and add to HNO 3 Completely dissolved in solution, according to In 2 o 3 / SnO 2 The mass ratio is 9:1, weigh SnCl 4 ·5H 2 O white crystals are added in the indium salt solution, stirred evenly to prepare the mixed salt solution;
[0035] (2) Take NH with a pH value of 6 4 AC buffer solution, adding a composite dispersant to the buffer solution; the amount of the composite dispersant added is 2% of the total amount of ITO powder; the composite dispersant is sodium dodecylsulfonate with a mass ratio of 1:2:1 , pregelatinized starch and polyvinylpyrrolidone;
[0036] (3) Add ammonia water and mixed salt solution dropwise to the buffer solution at the same time, and during the dropping process, adjust the drip rate of ammonia water so that the pH value of the solution remains basically unchanged, and generate an ind...
Embodiment 3
[0042] The present embodiment provides a kind of preparation method of highly dispersible ITO powder, comprises the following steps:
[0043] (1) Weigh metal In and add to HNO 3 Completely dissolved in the solution, according to In 2 o 3 / SnO 2 The mass ratio is 9:1, weigh SnCl 4 ·5H 2 O white crystals are added in the indium salt solution, stirred evenly to prepare the mixed salt solution;
[0044] (2) Take NH with a pH value of 7 4 AC buffer solution, adding a composite dispersant to the buffer solution; the amount of the composite dispersant added is 5% of the total amount of ITO powder; the composite dispersant is sodium dodecylsulfonate with a mass ratio of 1:2:1 , pregelatinized starch and polyvinylpyrrolidone;
[0045](3) Add ammonia water and mixed salt solution dropwise to the buffer solution at the same time, and during the dropping process, adjust the drip rate of ammonia water so that the pH value of the solution remains basically unchanged, and generate an ...
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