3results about How to "No flocculation" patented technology

The invention provides a nano-composite anti-seepage coating for goaf sealing and a preparation method and application thereof. The impermeable coating comprises the following components in percentage by mass: 10 to 30 percent of nano silica sol subjected to surface organic modification, 15 to 35 percent of styrene-butadiene latex subjected to pH buffer stabilization, 0.5 to 10 percent of functional nano material subjected to surface activation treatment, 20 to 60 percent of superfine sand and the balance of short fiber, inorganic powder filler and auxiliaries. The method comprises raw material pretreatment; step-by-step gradient blending is performed; and functions are compounded. According to the application, the nano-composite anti-seepage coating is applied to surrounding rock reinforcement, crack plugging or anti-seepage sealing engineering of a coal mine goaf. The slurry has the advantages of being high in deep infiltration capacity, excellent in surface film forming and internal compatibility and stable in performance, an internal infiltration reinforcing layer and a surface sealing layer can be formed at the same time after construction, and an integrated double-layer anti-seepage network is formed.

The present application relates to the technical field of collagen, in particular to a kind of active collagen lyophilized preparation and its preparation method and application.The preparation method includes the following steps: S1, the aqueous solution of freeze-drying protective agent is prepared;S2, the initial emulsion of active collagen is diluted with physiological saline, to obtain the first solution, then mixed with the aqueous solution obtained in step S1, to obtain the second solution;S3, the second solution obtained in step S2 is added to the aqueous solution of step S1, and the third solution is prepared after mixing and emulsifying, to obtain mixed emulsion;S4, the mixed emulsion in step S3 is filled and freeze-dried, wherein the freeze-drying protective agent includes glycine, and the concentration of active collagen in the third solution is 5-15 mg / mL.The lyophilized preparation prepared by the preparation method has excellent reconstitution effect, and is convenient for transportation and storage.

The invention belongs to the technical field of agricultural chemistry, and discloses a synergistic amino acid-containing water-soluble fertilizer produced from an acidolysis feather liquid and a preparation method thereof. The fertilizer comprises 30%-50% of acidolysis feather liquid, 2%-8% of a zinc-loaded pH-responsive nano-porous silicon carrier, 1%-5% of a boron-loaded pH-responsive nano-porous silicon carrier and nitrogen, phosphorus and potassium nutrient components, wherein the nano-carrier directionally releases zinc and boron in a rhizosphere subacid environment (pH 5.0-6.5), and keeps stable in neutral-alkaline soil. The invention effectively solves the technical contradiction that the stability and the availability of the traditional chelated fertilizer cannot be obtained at the same time, improves the nutrient utilization efficiency, realizes synergistic interaction of amino acids and trace elements, realizes high-value utilization of agricultural wastes, does not need high-temperature and high-pressure or complex equipment, has good compatibility of the components, is clear and transparent, has no precipitate and no flocculation, and is suitable for industrial production. The system is suitable for various water and fertilizer integrated systems such as drip irrigation and sprinkling irrigation.