Dispersion, composition, sealing member, light emitting device, lighting device, display device, and method for producing light emitting device
A light-emitting device and dispersion liquid technology, applied in chemical instruments and methods, dyed low-molecular organic compound treatment, dyed high-molecular organic compound treatment, etc., can solve problems such as insufficient extraction efficiency, and achieve the effect of improving extraction efficiency
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Embodiment 1
[0157] (Preparation of dispersion liquid)
[0158] 10 g of zirconia particles (manufactured by Sumitomo Osaka Cement Co., Ltd.) with an average primary particle diameter of 5 nm, 82 g of toluene, and 5 g of methoxy-containing phenyl silicone resin (manufactured by Shin-Etsu Chemical Co., Ltd., KR217) as a surface modification material were added and mixed. . The mixed solution was set at a blade circumferential speed of 6.0 m / s and a cooling water temperature of 20° C., and was subjected to dispersion treatment with a bead mill for 6 hours to obtain the dispersion of Example 1. The power per unit mass obtained by dividing the power displayed in the bead mill device by the charged slurry amount during the dispersion treatment was 2.2 kW / kg.
[0159] (evaluation of particle size)
[0160] A part of the obtained dispersion liquid was extracted, and it diluted with toluene so that the solid content might become 5 mass %.
[0161] D50 of the diluted dispersion was measured using a...
Embodiment 2
[0189] The dispersion liquid of Example 2 was obtained in the same manner as in Example 1, except that zirconia particles with an average primary particle diameter of 10 nm were used, the blade peripheral velocity was set to 5.0 m / s, and the cooling water temperature was set to 15°C. The power per unit mass obtained by dividing the power displayed in the bead mill device by the charged slurry amount during the dispersion treatment was 1.2 kW / kg.
[0190] In the same manner as in Example 1, the particle size, the content of the free surface modification material, and the chromaticity were measured. As a result, D50 was 45 nm, the content of the free surface modifying material was 48% by mass, L* was 81, a* was 1, and b* was 8. The results are shown in Table 1.
[0191] Except having used the dispersion liquid of Example 2 instead of the dispersion liquid of Example 1, it carried out similarly to Example 1, and obtained the composition, sealing member, and LED package of Exampl...
Embodiment 3
[0198] The dispersion liquid of Example 3 was obtained in the same manner as in Example 1 except that zirconia particles having an average primary particle diameter of 20 nm were used, the blade peripheral speed was set to 6.0 m / s, and the cooling water temperature was set to 20°C. The power expressed in the bead mill device at the time of dispersion treatment divided by the power per unit mass of the charged slurry amount was 2.4 kW / kg.
[0199] In the same manner as in Example 1, the particle size, the content of the free surface modification material, and the chromaticity were measured. As a result, D50 was 57 nm, the content of the free surface modifying material was 53% by mass, L* was 78, a* was −1, and b* was 14. The results are shown in Table 1.
[0200] Except having used the dispersion liquid of Example 3 instead of the dispersion liquid of Example 1, it carried out similarly to Example 1, and obtained the composition, sealing member, and LED package of Example 3. ...
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