A kind of fluorescent composition and fluorescent powder and its preparation method and application
A technology of fluorescent polymer and composition, applied in agricultural machinery and equipment, energy-saving measures, etc., can solve the problems of low yield of non-conjugated polymer fluorescent agent, difficult industrial application, single color, etc., and achieve broad industrial application prospects, The effect of mature industrial production process and simple preparation method
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Embodiment 1
[0102] Weigh 9.6g of maleic anhydride-vinyl acetate linear alternating copolymer (MVL) and put it into 200mL of ethanol solution, stir and disperse; weigh 2.4g of sodium hydroxide and put it into 200mL of deionized water to dissolve; The dispersion was added dropwise to the aqueous sodium hydroxide solution while stirring until well mixed. Then, it was treated in a constant temperature oven at 40°C for 48 hours to remove the ethanol therein to obtain an aqueous solution of blue fluorescent polymer, which was dried at 65°C for 48 hours to obtain a solid of blue fluorescent polymer. A part of the blue fluorescent polymer was heated in a constant temperature blast drying oven at 180°C until it became uniform red to obtain a red fluorescent polymer. The blue fluorescent polymer solid and the red fluorescent polymer solid are mixed in a weight ratio of 75:25 to obtain the fluorescent composition, the fluorescence emission range of which simultaneously includes the blue light emissi...
Embodiment 2
[0104] Weigh maleic anhydride-vinyl acetate linear alternating copolymer (MVL) with a mass of 9.6 g and put it into 500 mL of ethanol solution, stir and disperse; weigh 1.44 g of lithium hydroxide and put it into 500 mL of deionized water to dissolve; The dispersion was added dropwise to the aqueous solution of lithium hydroxide while stirring until well mixed. Then, it was treated in a constant temperature oven at 40°C for 48 hours to remove the ethanol therein to obtain an aqueous solution of blue fluorescent polymer, which was dried at 65°C for 48 hours to obtain a solid of blue fluorescent polymer. A part of the blue fluorescent polymer was heated in a constant temperature blast drying oven at 180°C until it became uniform red to obtain a red fluorescent polymer. The blue fluorescent polymer solid and the red fluorescent polymer solid are mixed in a weight ratio of 75:25 to obtain the fluorescent composition, the fluorescence emission range of which simultaneously includes...
Embodiment 3
[0106] Weigh maleic anhydride-vinyl acetate linear alternating copolymer (MVL) with a mass of 9.6 g and put it into 150 mL of ethanol solution, stir and disperse; weigh 3.36 g of potassium hydroxide and put it into 100 mL of deionized water to dissolve; The dispersion was added dropwise to the aqueous potassium hydroxide solution while stirring until well mixed. Then, it was treated in a constant temperature oven at 40°C for 48 hours to remove the ethanol therein to obtain an aqueous solution of blue fluorescent polymer, which was dried at 65°C for 48 hours to obtain a solid of blue fluorescent polymer. A part of the blue fluorescent polymer was heated in a constant temperature blast drying oven at 180°C until it became uniform red to obtain a red fluorescent polymer. Mixing the solid blue fluorescent polymer and the solid red fluorescent polymer according to a weight ratio of 50:50 to obtain the fluorescent composition, the fluorescence emission range of which simultaneously ...
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