Horseradish micro-capsule slow releasing agent taking silicon dioxide as carrier and preparation method thereof
A technology of silicon dioxide and aminosilanized silicon dioxide, which is applied in the fields of botanical equipment and methods, pesticides, biocides, etc. The effect of avoiding volatilization and decomposition, improving use safety, and short reaction process
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Embodiment 1
[0033] 1. Preparation method
[0034] 1) Preparation of aminosilanized silica: fully disperse 20.0g of silica with particle size distribution of 0.1-3.0μm dry amorphous porous structure in 150ml of dry dehydrated xylene, then add 10.0g of silane The joint agent KH550 was stirred and reacted at 80°C for 2 hours, and then centrifuged and dried to obtain 26.3 g of aminosilanized silica solid.
[0035] 2) Preparation of horseradish silicon dioxide impregnated body: 10.0 g of horseradish and 26.3 g of aminosilyl silica were mixed and stirred for 30 minutes, so that horseradish was fully adsorbed by the aminosilyl silica to obtain 36.3 g of a horseradish silica impregnated body with a particle size distribution of 0.1-3.0 μm.
[0036] 3) Preparation of horseradish microcapsules: 4.0g of toluene-2,4-diisocyanate and 6.0g of phenethylphenol polyoxyethylene ether were fully mixed and stirred to obtain an oil phase, and added to 60.0g of horseradish prepared above The aqueous suspensi...
Embodiment 2
[0042] 1. Preparation method
[0043] 1) Preparation of aminosilanized silica: fully disperse 15.0g of silica with particle size distribution of 0.1-3.0μm dry amorphous porous structure in 120ml of dry dehydrated xylene, then add 10.0g of silane The joint agent KH550 was stirred and reacted at 80°C for 2 hours, and then dried by centrifugation to obtain 21.1 g of aminosilanized silicon dioxide solid.
[0044] 2) Preparation of horseradish silicon dioxide impregnated body: 10.0 g horseradish and 21.1 g aminosilyl silica were mixed and stirred for 30 minutes, so that horseradish was fully adsorbed by the aminosilyl silica to obtain 31.1 g of a horseradish silica impregnated body with a particle size distribution of 0.1-3.0 μm.
[0045] 3) Preparation of horseradish microcapsules: 5.0 g of toluene-2,6-diisocyanate, 9.0 g of phenylethylphenol formaldehyde resin polyoxyethylene ether, and 1.0 g of sodium lauryl sulfate were fully mixed and stirred to obtain an oil phase , added t...
Embodiment 3
[0051] 1. Preparation method
[0052] 1) Preparation of aminosilanized silica: fully disperse 5.0 g of dry amorphous porous silica with a particle size distribution of 0.1-3.0 μm in 50 ml of dry dehydrated xylene, and then add 2.0 g of silane The joint agent KH550 was stirred and reacted at 80°C for 2 hours, and then centrifuged and dried to obtain 6.1 g of aminosilanized silica solid.
[0053] 2) Preparation of horseradish silica impregnated body: 2.0 g horseradish and 6.1 g aminosilyl silica were mixed and stirred for 20 minutes, so that horseradish was fully adsorbed by the aminosilyl silica to obtain 8.1 g of horseradish silica impregnated body with a particle size distribution of 0.1-3.0 μm.
[0054] 3) Preparation of horseradish microcapsules: 1.0 g of toluene-2,4-diisocyanate and 2.0 g of phenylethylphenol polyoxyethylene polyoxypropylene ether were fully mixed and stirred to obtain an oil phase, which was added to the prepared 8.1 1 g of horseradish silicon dioxide imp...
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