Fluorescent composition, fluorescent powder, and preparation methods and applications of fluorescent composition and fluorescent powder
A technology of fluorescent polymers and compositions, applied in chemical instruments and methods, luminescent materials, agricultural machinery and equipment, etc., can solve the problems of low yield of non-conjugated polymer fluorescent agents, difficulties in industrial application, single color, etc., to achieve Good water solubility, low biological toxicity and environmental pollution, mature production process
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Embodiment 1
[0102] Weigh 9.6g of maleic anhydride-vinyl acetate linear alternating copolymer (MVL) into 200mL of ethanol solution, stir and disperse; weigh 2.4g of sodium hydroxide into 200mL of deionized water to dissolve; The dispersion was added dropwise to the aqueous solution of sodium hydroxide while stirring until fully mixed. After that, it was treated in a constant temperature oven at 40°C for 48 hours to remove ethanol to obtain an aqueous solution of the blue fluorescent polymer, which was dried at 65°C for 48 hours to obtain a solid blue fluorescent polymer. Take a part of the blue light fluorescent polymer and heat it in a 180°C constant temperature blast drying oven until it becomes uniform red to obtain a red light fluorescent polymer. Mix the blue light fluorescent polymer solid and the red light fluorescent polymer solid according to the weight ratio of 75:25 to obtain the fluorescent composition, the fluorescent emission range of which includes blue light emission in the...
Embodiment 2
[0104] Weigh 9.6g of maleic anhydride-vinyl acetate linear alternating copolymer (MVL) into 500mL of ethanol solution, stir and disperse; weigh 1.44g of lithium hydroxide into 500mL of deionized water for dissolution; The dispersion liquid was added dropwise to the aqueous lithium hydroxide solution while stirring until fully mixed. After that, it was treated in a constant temperature oven at 40°C for 48 hours to remove ethanol to obtain an aqueous solution of the blue fluorescent polymer, which was dried at 65°C for 48 hours to obtain a solid blue fluorescent polymer. Take a part of the blue light fluorescent polymer and heat it in a 180°C constant temperature blast drying oven until it becomes uniform red to obtain a red light fluorescent polymer. Mix the blue light fluorescent polymer solid and the red light fluorescent polymer solid according to the weight ratio of 75:25 to obtain the fluorescent composition, the fluorescent emission range of which includes blue light emis...
Embodiment 3
[0106] Weigh 9.6g of maleic anhydride-vinyl acetate linear alternating copolymer (MVL) into 150mL of ethanol solution, stir and disperse; weigh 3.36g of potassium hydroxide into 100mL of deionized water for dissolution; put MVL of ethanol The dispersion was added dropwise to an aqueous solution of potassium hydroxide while stirring until fully mixed. After that, it was treated in a constant temperature oven at 40°C for 48 hours to remove ethanol to obtain an aqueous solution of the blue fluorescent polymer, which was dried at 65°C for 48 hours to obtain a solid blue fluorescent polymer. Take a part of the blue light fluorescent polymer and heat it in a 180°C constant temperature blast drying oven until it becomes uniform red to obtain a red light fluorescent polymer. Mix the blue light fluorescent polymer solid and the red light fluorescent polymer solid according to a weight ratio of 50:50 to obtain the fluorescent composition, the fluorescence emission range of which include...
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