Light conversion agent composition and preparation thereof, preparation of light conversion agricultural film
The technology of a composition and a light-converting agent is applied in the field of light-converting agent composition and its preparation, and in the field of preparing light-converting agricultural film, which can solve the problems of inability to effectively prevent film aging, uneven dispersion of light-converting agent, lack of weather resistance and the like, Achieve the effect of being beneficial to photosynthesis, improving the intensity of red light and reducing disease
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Embodiment approach 1
[0021] Brightening agent composition A x B y C z , A selects europium nitrate for use, B selects o-phenanthroline for use, C selects silica gel for use, and selects x: y: z as 1: 1.1: 1;
[0022] Dissolve 2.0 grams of europium nitrate in 20 milliliters of water, add 2.0 grams of silica gel-containing water suspension, stir the resulting mixture for one hour, and distill off the solvent; then add 50 milliliters of toluene to the obtained powder, add and dissolve A solution of 2.2 g of o-phenanthroline in 15 ml of toluene; the mixture was stirred for 3 hours at a temperature of 70° C., filtered, and dried at a temperature of 100° C. to obtain 6 g of a light-changing agent composition with a yield of 97%.
[0023] The above-mentioned light-changing agent composition is mixed with a polyethylene base material to prepare a film, the mass ratio is: 99.9705% of polyethylene, 0.0295% of the light-changing agent composition, and blown into a film.
Embodiment approach 2
[0025] Brightening agent composition A x B y C z , A selects europium hexafluoroacetylacetonate, B selects o-phenanthroline, and C selects CaCO 3 , select x:y:z as 1:0.5:7;
[0026] Dissolve 1.0 g of europium hexafluoroacetylacetonate in 20 mL of C 2 h 5 OH, add 7.0 g CaCO 3 The aqueous suspension of the obtained mixture was stirred for one hour, and the solvent was evaporated; then 50 milliliters of toluene was added to the obtained powder, and a solution of 0.5 grams of phenanthroline dissolved in 15 milliliters of toluene was added under stirring; at a temperature of 70 ° C, the The mixture was stirred for 3 hours, filtered, and dried at 100° C. to obtain 8.3 g of a light-changing agent composition with a yield of 98%.
[0027] The above-mentioned light-changing agent composition is mixed with a polyethylene base material to prepare a film, the mass ratio is: 99.8448% of polyethylene, 0.1552% of the light-changing agent composition, and blown into a film.
Embodiment approach 3
[0029] Brightening agent composition A x B y C z , A selects europium thienoyl trifluoroacetonate, B selects 2,2'-bipyridine, and C selects Al 2 o 3 , select x:y:z as 1:1.4:10;
[0030] Dissolve 1.0 g of europium thiophenoyltrifluoroacetonate in 20 ml of acetone, add 10 g of Al 2 o 3 The resulting mixture was stirred for one hour, and the solvent was evaporated; then 50 milliliters of toluene was added to the obtained powder, and 1.4 grams of 2,2'-bipyridyl solution dissolved in 15 milliliters of toluene was added under stirring; , the mixture was stirred for 3 hours, filtered, and dried at a temperature of 100° C. to obtain 11.8 g of a light-changing agent composition with a yield of 95%.
[0031] The above-mentioned light-changing agent composition is mixed with a polyethylene base material to prepare a film, the mass ratio is: 99.8558% of polyethylene, 0.1442% of the light-changing agent composition, and blown into a film.
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