A quantum dot film with high water and oxygen barrier capacity and its preparation method
A technology of quantum dot film and water-oxygen barrier layer, applied in instruments, diffusing elements, optical elements, etc., can solve the problems of inability to make films, thick quantum dot film thickness, complex structure, etc., and achieve low production cost and service life. Long, structurally stable effect
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[0034] A method for preparing a quantum dot film with high water and oxygen barrier capacity as described above, comprising the following preparation steps:
[0035] S010, uniformly mixing the quantum dots, diffusion particles, linear resin and film-forming aid at room temperature to form a liquid mixture;
[0036] S020. Apply the liquid mixture in step S010 on the surface of the release film, and then heat for 5-30 minutes to volatilize the solvent or react small molecules to form macromolecules, and solidify the liquid mixture into a quantum dot film, and remove the release film After that, the quantum dot layer is obtained;
[0037] S030, heating the quantum dot layer prepared in step S020 to 110°C-150°C and stretching the quantum dot layer uniaxially;
[0038] S040. After laminating a layer of water and oxygen barrier layers on the upper and lower surfaces of the uniaxially stretched quantum dot layer, a quantum dot film with high water and oxygen barrier capacity is obta...
Embodiment 1
[0046] At room temperature, 0.6 parts of green quantum dots, 0.06 parts of red quantum dots, 27 parts of diffusion particles, 10 parts of linear polyisobutylene, 0.03 parts of polyethylene glycol nucleating agent, 0.3 parts of leveling agent, 20 parts of cyclohexane are mixed evenly to form a liquid mixture;
[0047] Coat the prepared liquid mixture on the surface of the release film, heat at 80°C to 90°C for 5 minutes to volatilize the cyclohexane, solidify the liquid mixture into a quantum dot film, and then remove the release film to obtain the quantum dot layer ;
[0048] The obtained quantum dot layer is uniaxially stretched at 110°C, and a water-oxygen barrier layer is attached to the upper and lower surfaces of the stretched quantum dot layer to obtain quantum dots with high water-oxygen barrier capacity. membrane.
Embodiment 2
[0050] At room temperature, 1.1 parts of green quantum dots, 0.1 parts of red quantum dots, 10 parts of diffusion particles, 20 parts of linear syndiotactic polystyrene, 0.05 parts of organophosphate nucleating agent, 40 parts of Methyl isobutyl ketone and 0.1 part of leveling agent are mixed evenly to form a liquid mixture;
[0051] Coat the prepared liquid mixture on the surface of the release film, heat at 90°C to 100°C for 10 minutes to volatilize the methyl isobutyl ketone, solidify the liquid mixture into a quantum dot film, and then remove the release film, that is Get the quantum dot layer;
[0052] The obtained quantum dot layer is uniaxially stretched at 120°C, and a water-oxygen barrier layer is attached to the upper and lower surfaces of the stretched quantum dot layer to obtain quantum dots with high water-oxygen barrier capacity. membrane.
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