A light-converting functional agricultural film and its preparation method and application
A functional and agricultural film technology, applied in the field of inorganic functional materials and polymer light-converting agricultural films, can solve the problems of not very consistent, high original cost, reduce the number of reprocessing steps, high economic value, and stable physical and chemical properties. Effect
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Embodiment 1
[0051] Example 1: Red light conversion agent Sr 2 MgAl 21.988 o 36 :0.012Mn 4+ preparation of
[0052] According to the stoichiometric ratio, accurately weigh 2mol strontium carbonate, 1mol magnesium oxide, 10.994mol aluminum oxide, 5wt% ammonium chloride, 2wt% boric acid and 1.2%mol manganese carbonate, place them in an agate mortar, add absolute ethanol and grind thoroughly 30min; After mixing the raw materials evenly, after the absolute ethanol volatilizes, put it into a crucible and place it in an oven to dry completely, and then transfer it to a muffle furnace for melting and calcining; in the melting stage, the atmosphere is the ambient air atmosphere, and the muffle furnace uses 5 The heating rate of ℃ / min was increased to 850 ℃, and the temperature was kept for 3 hours. After the muffle furnace was naturally cooled to room temperature, the obtained precursor was milled by a wet ball mill for 1 h, and the powder sample was transferred to the muffle furnace to contin...
Embodiment 2
[0054] Example 2: Red light conversion agent Sr 2 MgAl 22-x o 36 :xMn 4+ Preparation (where x is 0, 0.001, 0.002, 0.004, 0.008, 0.012, 0.016, 0.020, 0.050 respectively)
[0055] According to the stoichiometric ratio, accurately weigh 2mol strontium carbonate, 1mol magnesium oxide, (22-x) / 2mol aluminum oxide, 5wt% ammonium chloride, 2wt% boric acid and x mol manganese carbonate, put them in an agate mortar, add Fully grind the water and ethanol for 30 minutes; after the raw materials are mixed evenly, after the absolute ethanol volatilizes, put them into a crucible and place them in an oven to dry completely, and then transfer them to a muffle furnace for melting and calcination; in the melting stage, the atmosphere is ambient air. The Furnace was raised to 850°C at a rate of 5°C / min and kept for 3 hours. After the muffle furnace was naturally cooled to room temperature, the obtained precursor was milled by a wet ball mill for 1 h, and the powder sample was transferred to t...
Embodiment 3
[0058] Example 3: Red light conversion agent Sr 2 MgAl 21.988 o 36 :0.012Mn 4+ preparation of
[0059] According to the stoichiometric ratio, accurately weigh 2mol strontium carbonate, 1mol magnesium oxide, 10.994mol aluminum oxide, 1.2%mol manganese carbonate and x wt% (wherein x can be 0, 2, 4, 6, 8, 10, 12, 14, 16) Ammonium chloride, put it in an agate mortar, add absolute ethanol and grind it thoroughly for 30 minutes; after mixing the raw materials evenly, after the absolute ethanol volatilizes, put it into a crucible and dry it completely in an oven, and then transfer it to a muffle Melting and calcining in the furnace; during the melting stage, the atmosphere is the ambient air atmosphere, and the temperature of the muffle furnace is raised to 850°C at a rate of 5°C / min, and the temperature is kept for 3h. After the muffle furnace was naturally cooled to room temperature, the obtained precursor was milled by a wet ball mill for 1 h, and the powder sample was transfe...
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