41results about How to "Has a sustained release effect" patented technology

The invention discloses a thermal-oxidizing-aging resisting polypropylene composite. The thermal-oxidizing-aging resisting polypropylene composite comprises the following components in percentage by weight: 30%-85% of polypropylene, 0-10% of flexibilizer, 2%-10% of compatilizer, 10%-40% of filling agent, 0.1%-0.5% of nucleating agent, 1%-10% of load type functional agent and 0.2%-1.0% of processing agent. Due to the nucleating agent, the polypropylene spherocrystal is refined, the crystallization is uniform and regular and the degree of crystallinity is increased, so that the lattice defect of a substrate is avoided effectively, and the oxygen is prevented from dispersing to the inner part from the surface of the composite freely; due to the compatilizer, the interface bonding force of the polypropylene and the filling agent is improved, so that two phase interfaces are combined tightly, the and the oxygen is prevented from dispersing to the inner part from the surface of the composite freely, and the thermal-oxidizing-aging resistance is improved; and the load type functional agent solves the problem of dispersibility and solvent resistance of an antioxidant and a light stabilizer. The thermal-oxidizing-aging resisting polypropylene composite has a simple preparation method, is high in thermal-oxidizing-aging resisting efficiency and is widely applied to the field of household appliances such as electric cookers, microwave ovens, washing machines, dish-washing machines and the like.

The invention relates to a multi-performance corn stalk biochar compound fertilizer for repairing soil cadmium pollution, which is made of the following raw materials in parts by weight: 10 parts of compound fertilizer raw materials and 1 part of kaolin; the raw materials of compound fertilizer are made of the following raw materials in parts by weight Composition: 4 parts of composite biochar material and 1 part of urea; the composite biochar material is made of the following raw materials in parts by weight: 5-10 parts of corn stalks, 1 part of superphosphate and 1 part of diatomite. The preparation method: dry and pulverize the corn stalks; mix the corn stalks, heavy superphosphate and diatomaceous earth evenly in proportion to obtain a mixed powder; perform high-temperature pyrolysis on the mixed powder to obtain a composite biochar material; The compound biochar material obtained by decomposing is mixed with urea in proportion to obtain the compound fertilizer raw material; roasting; adding kaolin to the roasted compound fertilizer raw material to make granular compound fertilizer. The compound fertilizer has good adsorption and passivation performance on heavy metal cadmium in soil, and has good fertility function.

The invention discloses a carvacrol solid lipid nanoparticles dispersion liquid with bacteriostatic activity, a preparation method and application thereof. The carvacrol solid lipid nanoparticles include: carvacrol 0.05-0.5wt%, glycerol monostearate 0.5-1wt%, 1, 2-propylene glycol ester 0.5-1wt%, Twain-80 1-2wt%, ethyl alcohol 5-6wt%, and the remainder is water. The effective component of the carvacrol solid lipid nanoparticles dispersion liquid is derived from the plant extract, which is green, environmentally friendly and harmless to human body. The solid lipid nanoparticles improve the water dispersibility of carvacrol effectively, increase the solubility of carvacrol in water, and improve the stability of carvacrol.

The invention discloses a natural multi-functional foliage fertilizer. The foliage fertilizer comprises the following raw materials in percentage by weight: 10-30% of Pistacia chinensis extraction solution, 5-10% of amino acid nutrient solution, 1-3% of trace elements, 2-4% of attapulgite, 1-3% of diatomaceous earth, and the balance of water. The invention also provides a preparation method of the foliage fertilizer, the method comprises the steps of taking leaves, buds, twigs and fruit peels of Pistacia chinensis, drying and crushing to fine powder; adding fine powder into the extraction solution at a ratio of fine powder to extraction solution being 1g / (5-40) ml and soaking; after soaking, heating, stirring and extracting, filtering the primary extraction solution and collecting the filtrate; centrifuging the filtrate, collecting the supernatant as the Pistacia chinensis extract solution; taking the raw materials in percentage by weight, mixing the raw material, heating and stirring until the raw materials are fully dissolved. The natural multi-functional foliage fertilizer has the advantages that the foliage fertilizer is natural, green, environmentally friendly and efficient, the yield-increasing effect is obvious, no residues of pesticides and fertilizers occur, the natural multi-functional foliage fertilizer can prevent pests and diseases of plants and is especially applicable to organic agriculture.

The invention relates to a spandex with long-acting insect-resistant performance and a preparation method of the spandex. The preparation method comprises the steps of feeding a solvent and polyether into a prepolymerization tank, then accurately feeding diisocyanate according to the set NCO / OH proportion, and carrying out prepolymerization reaction; after the reaction, transferring the product of the prepolymerization reaction into a chain extension tank, and evenly stirring; slowly controlling the dropping of chain extension amine and chain terminator solution at the low temperature to finally form polyurethane-urea solution; feeding an insect-resistant auxiliary agent, an antioxidant, an uvioresistant auxiliary agent, a dyeing auxiliary agent, a delustering agent, a lubricating agent and the like, fully and evenly stirring, and carrying out vacuum defoamation; carrying out dry spinning to obtain the spandex fiber. The spandex prepared by the invention is capable of guaranteeing the performance indexes of the similar conventional products, but also has the long-acting insect-resistant performance.