Quantum dot composite microsphere with two-component shell and preparation method thereof
A technology of composite microspheres and quantum dots, applied in the field of quantum dots, can solve the problems of inability to prepare temperature-sensitive quantum dots, and achieve high luminous efficiency
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Embodiment 1
[0031] (1) mixing myristic acid, styrene and ethyl orthosilicate with a phase transition temperature of 52 to 54° C. in a mass ratio of 6:9:1 to obtain a mixture;
[0032] Add the above mixture into a 500mL round-bottomed flask, stir with sheet stainless steel, heat in a water bath to 60°C at a stirring speed of 1500 rpm, add 1g of sodium dodecylbenzenesulfonate into 100mL of water, and disperse homogeneous, and added to a round-bottomed flask for emulsification for 20 minutes, then heated up to 80°C, and continued to emulsify for 10 minutes at a stirring speed of 1500 rpm to obtain a uniform microemulsion, wherein the sodium dodecylbenzenesulfonate The ratio of mass to the mass sum of myristic acid, styrene and ethyl orthosilicate is 1:13;
[0033] After the emulsification was completed, the temperature of the water bath was adjusted to 85°C. Dissolve 1 g of ammonium persulfate in 7.5 mL of deionized water, and slowly add it dropwise to the round bottom flask until complete....
Embodiment 2
[0044] (1) mixing palmitic acid, styrene and ethyl orthosilicate with a phase transition temperature of 62 to 63° C. in a mass ratio of 10:15:4 to obtain a mixture;
[0045] Add the above mixture into a 500mL round-bottomed flask, stir with sheet stainless steel, heat in a water bath to 70°C at a stirring speed of 1500 rpm, add 1g of sodium dodecylbenzenesulfonate to 100mL of deionized Disperse evenly in water, add it to a round bottom flask for emulsification for 10 minutes, then raise the temperature to 80°C, and continue to emulsify for 20 minutes at a stirring speed of 1500 rpm to obtain a uniform milky white microemulsion. Among them, sodium tetradecyl sulfate The ratio of the quality of palmitic acid, styrene and ethyl orthosilicate to the sum of the quality is 1:25;
[0046] After the emulsification was completed, the temperature of the water bath was adjusted to 85°C. Dissolve 1 g of ammonium persulfate in 7.5 mL of deionized water, and slowly add it dropwise to the r...
Embodiment 3
[0056] (1) Mixing lauric acid, styrene and ethyl orthosilicate with a phase transition temperature of 43 to 45° C. in a mass ratio of 8:12:2 to obtain a mixture;
[0057] Add the above mixture into a 500mL round-bottomed flask, stir with sheet stainless steel, heat to 60°C in a water bath at a stirring speed of 1500 rpm, add 1g of sodium lauryl sulfate to 42.5mL of deionized water Disperse evenly, add it to a round bottom flask for emulsification for 15 minutes, then raise the temperature to 80°C, and continue to emulsify for 15 minutes at a stirring speed of 1500 rpm to obtain a uniform milky white microemulsion, in which dodecylbenzenesulfonic acid The ratio of the quality of sodium to the sum of the quality of lauric acid, styrene and ethyl orthosilicate is 1:20;
[0058] After the emulsification was completed, the temperature of the water bath was adjusted to 85°C. Dissolve 1 g of initiator and catalyst ammonium persulfate in 7.5 mL of deionized water, and slowly add it d...
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