A kind of ultraviolet-blue light absorbing agent and its preparation method and made ultraviolet-blue light absorbing material
A blue light absorber and blue light absorption technology, applied in the field of materials, can solve problems such as poor filtering effect, and achieve the effects of low cost, stable optical properties and environmental friendliness
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Embodiment 1
[0035] A kind of ultraviolet-blue light absorber, prepares according to following preparation method:
[0036] (1) Add 5.14mmol EDTA, 15.42mmol ethanolamine and 50mL deionized water into a 250ml three-necked flask, fully dissolve and then carry out the oil bath reflux at 200°C for 10h to obtain the mixture;
[0037] (2) Centrifuge the mixture 3 times at a speed of 8000 rpm for 8 minutes to remove the precipitate and retain the supernatant;
[0038] (3) The obtained supernatant was suction-filtered with a sand core funnel, and a water-phase filter membrane with a pore size of 0.22 μm was used for suction filtration to remove large-size molecules in the solution, and finally an ultraviolet-blue light absorber was obtained. figure 1 is the Fourier transform infrared spectrum of the UV absorber, from figure 1 It can be seen that the prepared UV-blue light absorber is rich in organic groups on the surface of carbon dots, such as amino groups, carboxyl groups, and hydroxyl groups. ...
Embodiment 2
[0046] Referring to Example 1, an ultraviolet-blue light absorber was synthesized. Utilize the obtained ultraviolet-blue light absorber to prepare ultraviolet-blue light absorbing material, specifically according to the following preparation method:
[0047] (1) Weigh 25 parts by mass of methyl methacrylate and 1 part by mass of polymethyl methacrylate in a 250mL three-neck flask, stir vigorously and heat in a water bath to 90°C, continue heating for 1h after the reactants dissolve, then stop heating and turn to Cool it down to 50°C with a cold water bath.
[0048] (2) Add 3 parts by mass of ultraviolet-blue light absorber and continue to stir, then add 0.2 parts by mass of dicumyl peroxide and stir evenly, take it out, put it in a 50°C oven for 7 days, make it reach a basically solidified state, and then further heat up Heat treatment at a high temperature to 110°C to fully polymerize and finally obtain the product.
Embodiment 3
[0050] Referring to Example 1, an ultraviolet-blue light absorber was synthesized. Utilize the obtained ultraviolet-blue light absorber to prepare ultraviolet-blue light absorbing material, specifically according to the following preparation method:
[0051] (1) Weigh 30 parts by mass of methyl methacrylate and 1 part by mass of polymethyl methacrylate in a 250mL three-neck flask, stir vigorously and heat in a water bath at 85°C, continue heating for 1h after the reactants dissolve, then stop heating and turn to Cool it down to 50°C with a cold water bath.
[0052] (2) Add 4 parts by mass of UV-blue light absorber and continue to stir, then add 0.4 parts by mass of dicumyl peroxide and stir evenly, take it out, put it in a 45°C oven for 7 days, make it reach a basic solidification state, and then further heat up Carry out high-temperature heat treatment at 105°C to fully polymerize and finally obtain the product.
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