110results about How to "Play a sustained release effect" patented technology

A mosquito preventing and repelling extract is prepared from resin and refined plant oil through proportional mixing and stirring at 70-120 deg.C for 8-10 hr. A mosquito preventing and repelling paster made of said extract is composed of an extract layer, an adhesive layer, a film layer, a non-drying adhesive layer and a protective parting paper layer.

Animal hair in life is a waste energy, the protein structure of the animal hair is stable and difficult to decompose under the natural condition, poultry feather and pig hair are used as raw materials to be mixed with alkaline substance slaked lime and sodium bicarbonate, the mixture is firstly soaked and then boiled, after the structure of the poultry feather and pig hair is destructed, the poultry feather and pig hair are ground and fermented to be used for preparing organic matters of the fertilizer, so that waste is utilized, the environment pollution is avoided, the resource is saved, the inner layer contains NPK (Nitrogen, Phosphorus and Potassium) element and trace minerals which are necessary for the high yield of crops, the NPK element and trace minerals are wrapped by a coating agent prepared by utilizing the resin so as to be used as a core of the organic fermented material, a film material is slowly decomposed, an effect for controlling the release of internal nutrients can be achieved, the waste caused by frequent application of fertilizer can be avoided, the cost is reduced, and the economic benefit is increased.

The invention relates to a cigarette filter tip particulate material of a double-layer structure and a manufacturing method of the cigarette filter tip particulate material, and belongs to the technical field of cigarettes. According to the invention, konjac serves as a core material which is flavored and granulated; on the basis of obtained flavor-loaded particles, ethyl cellulose is used as an adhesive and a sustained-release film; and outer layers of the particles are granulated by virtue of radix puerariae, so that a double-layer structure is defined, wherein the konjac particles on the inner layer of the double-layer structure are mainly used as carriers of flavors and fragrances; the ethyl cellulose in the middle mainly takes a sustained-release effect on the flavors and fragrances in the inner layer, and the ethyl cellulose can also function as the adhesive; and in the outer layer of the double-layer structure, smoke is improved mainly on the basis of intrinsic sweetness and moistness properties of the radix puerariae. The method provided by the invention, which is free from research and development of novel equipment, is low in production input and high in product yield; an excellent flavor-loading function of the konjac and the good sweetness and moistness properties of the radix puerariae are integrated; and the invention is easy for popularization and application.

The invention discloses a preparation method of a resistant starch nutritional carrier based on a metal-organic framework as well as a product thereof. The preparation method of the resistant starch nutritional carrier comprises the step of adsorbing metal-organic framework structured gamma-cyclodextrin on the surface of octenyl succinic anhydride modified starch (OSA-S) by taking the OSA-S prepared by performing esterification on octenyl succinic anhydride and resistant starch as a base material and under the effects of hydrogen bond, electrostatic force and the like, thus constructing the nutritional carrier with a porous network structure. The nutritional carrier has favorable solution self-aggregation performance; by virtue of the great load quantity of the relatively single OSA-S and the metal-organic framework structured gamma-cyclodextrin, functional substances such as nutritional elements can be embedded in a solid state mode, so that the damage caused by light irradiation, oxygen as well as acid-base and the like is prevented effectively, and a certain slow-release effect is achieved; the resistant starch also has a good health protection effect, and thus the nutritional carrier is expected to be a safe functional food additive applied to the food processing field.

The invention relates to a concrete crack autolysis self-repairing system and a preparation method thereof. The system comprises an autolysis repairing carrier and an autolysis protective film that is covered on the surface of the autolysis repairing carrier. A repairing agent is loaded on the autolysis repairing carrier. In preparation, the autolysis repairing carrier is prepared through a sol-gel method, then the autolysis repairing carrier is subjected to a pore enlarging treatment; after the pore-enlarging treatment, the autolysis repairing carrier is impregnated in a solution of repairing agent, then centrifugal separation is performed, the upper layer supernate is removed, the repairing carrier on the bottom is washed and dried in vacuum so as to obtain the repairing agent supported autolysis repairing carrier; and finally the autolysis repairing carrier is impregnated in an autolysis protective film solution so that the autolysis protective film can fully cover the surface of the autolysis repairing carrier. Compared with the prior art, the advantages of mineral self repairing method and microcapsule self repairing method are combined, and an autolysis carrier self-repairing system is prepared and can be used to repair cracks in a structure made of cement based material.

The invention discloses selenium-rich fertilizer for wheat cultivation. The fertilizer is prepared from the following raw materials in parts by weight: 0.4-1 part of magnesium nitrate, 3-4 parts of sucrose residues, 0.3-0.7 parts of selenium yeast, 4-6 parts of chlorella powder, 7-10 parts of turfy soil, 14-20 parts of coconut shell powder, 0.4-1 part of triethanolamine, 13-20 parts of camphor bark powder, 1-2 parts of shellfish fossils, 0.1-0.2 parts of narrow-leaved lindernia, 2-3 parts of sugarcane leaves, 0.2-1 part of ricinoleic acid, 17-20 parts of fishbone, 3-4 parts of potassium sulfate, 0.1-0.2 parts of zinc chloride, 4-6 parts of rapeseed cakes, 130-140 parts of urea, 10-14 parts of calcium sulfate and 20-30 parts of diammonium phosphate. The fertilizer is rich in selenium, can effectively increase the content of selenium in wheat and contains various trace elements, and a ball abrasive treated with an amide dispersion liquid can effectively reduce the content of heavy metal in soil and realizes a good sustained release effect.

The invention discloses a KOH developing liquid for an KMPR photoresist. The developing liquid comprises a property amount of KOH and deionized water, further, K2HPO4 is added into the KOH developing liquid to prepare a buffer solution, a hydration reaction of substances in the buffer solution can be promoted along with the gradual neutralization of base groups in the developing liquid so as to further release base groups, the reduction speed of developing effect of the developing liquid can be reduced, the controlled-release effect of the base groups can be achieved, so that the adjustment on the developing time during production can be postponed, and the quality and stability of the product can be enhanced. Furthermore, in order to achieve a better developing effect, a surfactant, a defoaming agent and the like can also be added in the developing liquid. According to the KOH developing liquid for the KMPR photoresist, the KMPR photoresist can be better developed, without causing environment pollution like an organic solution.

The invention discloses selenium-rich bio-fertilizer with a sustained release function and a preparation method thereof. The selenium-rich bio-fertilizer comprises, by weight, 280-300 parts of fertilizer body, biological microbial agents, 18-20 parts of functional carrier and auxiliary materials, wherein the biological microbial agents comprise, by weight, 0.08-0.09 part of Bacillus thuringiensis,0.1-0.15 part of Paenibacillus polymyxa, 0.2-0.25 part of Azotobacter chroococcum, 0.05-0.07 part of Bacillus subtitles, 0.1-0.15 part of Lactobacillus acidophilus, 0.1-0.15 part of Lactobacillus bulgaricus and 0.1-0.15 part of Streptococcus thermophilus; the functional carrier is prepared by mixing zeolite, charcoal, diatomite, sepiolite and bentonite according to the mass ratio of 3:1:1:2:1; the auxiliary materials comprise, by weight, 0.1-0.2 part of polyglutamic acid, 5-6 parts of potato powder, 0.1-0.2 part of humic acid, 5-6 parts of volvariella volvacea, 4-5 parts of garlic, 8-10 partsof pleurotus ostreatus, 4-5 parts of puffball, 5-6 parts of auricularia auricular and 12-13 parts of selenium ore. The selenium-rich bio-fertilizer and the preparation method thereof have the advantages that aiming at the feature that the absorption efficiency of vegetables or fruits to inorganic selenium is low, the selenium ore is ground into powder and prepared into a solution and a culture medium to culture fermentation fungi so as to obtain the fertilizer which can be well absorbed by plants, and the selenium content of the planted vegetables and fruits is increased.

The invention discloses a method for symbiotic rotational culture of rice, crayfishes, ducks and crabs, and relates to the field of agricultural ecological cultivation. The method comprises the following steps: in the middle ten days of January, digging cultivation ditches around a rice field, planting waterweed and typha angustifolia, arranging an anti-escape net around the rice field, placing juvenile crayfishes into the rice field in the first ten days of April, artificially cultivating rice seedlings in a greenhouse in the middle ten days of May, transplanting the seedlings into the rice field, irrigating water into the rice field, adding a nutrient into the water, placing juvenile crabs into the cultivation ditches and the rice field in the middle ten days of July, feeding ducks in abreeding shed in the last ten days of August, arranging fences on the periphery of a rice stubble field in the first ten days of November, and breeding the ducks in the rice field. The ducks, the crayfishes and the crabs are cultured alternately, the utilization rate of the rice field is increased, furthermore, mutual swallowing of the cultured products can be prevented, the rice and the culturedproducts mutually provide nutrients for each other, effective circulation of an ecological system is realized, resources are reasonably utilized, and the culture cost is saved.

The invention discloses a pesticide microcapsule with an easily-adjusted release rate. The pesticide microcapsule comprises a capsule core and a capsule material; the capsule material is polyurethaneobtained by cross-linking curing of isocyanate, a polyurethane soft segment and a chain extender, and the capsule material accounts for 2%-40% by mass of the pesticide microcapsule; and the capsule core includes an oil-soluble pesticide and an organic solvent, wherein the organic solvent accounts for 0-45% by mass of the pesticide microcapsule. According to the pesticide microcapsule provided by the invention, the oil-soluble pesticide is used as the capsule core and can cooperate with the capsule material in the preparation process to form the structurally-stable pesticide microcapsule; and the capsule material is obtained by a curing cross-linking reaction of the isocyanate, the polyurethane soft segment and the chain extender, the reaction speed is easy to control, and therefore the release rate of the pesticide microcapsule can be conveniently adjusted.

The invention discloses antibacterial and odor-resistant spun-bonded non-woven fabric, a planar mask with the spun-bonded non-woven fabric and a manufacturing method of the planar mask. The antibacterial and odor-resistant spun-bonded non-woven fabric is prepared from the following raw materials in parts by weight: 75-85 parts of polypropylene, 15-19 parts of metallocene catalyzed linear low density polyethylene, 2-2.5 parts of mesoporous silica, 3-4 parts of sepiolite powder, 1.2-1.4 parts of dichlorophenyl imidazole dioxolane, 2.2-2.6 parts of avermectin, 1-1.6 parts of maleic anhydride grafted polypropylene, 1-1.5 parts of oleamide, 1.5-2 parts of erucyl amide, 1-1.5 parts of a heat stabilizer and 3-5 parts of polypropylene cooling masterbatch. The antibacterial and odor-resistant spun-bonded non-woven fabric has good antibacterial and odor-resistant effects, is particularly suitable for being applied to masks, and has excellent microbial indexes, cytotoxicity, skin irritation, delayed hypersensitivity and other performance indexes.

The invention relates to fiber and a preparation method thereof, in particular to a preparation for an antistatic coating for a stainless steel pipe. The antistatic coating is prepared from, by mass, 45-50 parts of epoxy acrylate, 31-44 parts of butanediol, 0.5-1 part of a catalyst, 8-12 parts of modified graphite, 5-8 parts of silver mesoporous silica microspheres, 3-8 parts of a nanometal compound, 0.1-0.5 part of antioxygen 1010 and 0.3-0.8 part of stabilizer. The prepared coating has an efficient and lasting antistatic and antibacterial effect, the additive amount of functional components is large, dispersity is good, and high-temperature processing is stable. The preparation method is simple, easy to operate and control, low in cost, environmentally friendly and suitable for batch production.

The invention discloses collagen gel / bentonite double coated slow-release compound fertilizer and a preparation method thereof. The collagen gel / bentonite double coated slow-release compound fertilizer is prepared by taking granular compound fertilizer as an inner core, taking gel formed from collagen extracted from pigskin as an inner coating material and taking absorptive mineral bentonite as an outer wrappage. According to the double coated slow-release compound fertilizer, the problems of optimization conditions for preparing a nutrient-preserving coating agent from the collagen gel, preparation technology and parameters of the slow-release fertilizer and evaluation of the slow-release effect of the coated slow-release fertilizer are solved; the preparation technology of the coated fertilizer is simple; raw materials of a coating agent are from organisms, can be completely biodegraded, and are environment-friendly and free of secondary pollution; and the environmental pollution from agricultural production is reduced and relieved while the utilization rate of the fertilizer effect is improved.

The invention relates to fibers and their preparing methods, in particular to an antistatic antibacterial composite functional stainless steel pipe coating, made from, by weight, 45-50 parts of epoxy acrylic resin, 31-44 parts of butanediol, 0.5-1 part of a catalyst, 8-12 parts of modified graphene, 5-8 parts of silver-loaded mesoporous silicon dioxide microspheres, 3-8 parts of a nano metal compound, 0.1-0.5 part of an antioxidant agent, and 0.3-0.8 part of a stabilizer. The coating prepared herein has efficient and lasting antistatic and antibacterial effects, many functional components are added, the dispersion is good, and high-temperature processing stability is good; the preparation method of the coating is simple and is easy to perform, easy to control, low in cost, environment-friendly, and suitable for batch production.

The invention discloses a Chinese herb veterinary micro-capsule preparation and a preparation method thereof. The preparation method comprises the following steps of (1) washing the demanded medicinal materials, cutting into segments, then mixing according to the proportion of a prescription, smashing by a pulverizer preliminarily, and sieving by a mesh sieve; (2) extracting the smashed medicinal materials by an extract liquor, then filtering, thus obtaining filtrate and filter residue; (3) removing the extract liquor in the filtrate, thus obtaining a concentrated liquor and ethyl alcohol; (4) extracting the filter residue for the second time through a decocting method, thus obtaining a liquid medicine; (5) mixing the concentrated liquor and liquid medicine, smashing by ultrasonic wave, thus obtaining suspensions; (6) mixing the suspensions with a gelatin aqueous solution, then adding flocculant, reacting and cooling, then dropping a curing agent, stirring at high speed, standing, thus obtaining the product; and (7) washing the product, drying, and collecting to obtain the Chinese herb veterinary micro-capsule preparation. The Chinese herb veterinary micro-capsule preparation can be directly used for extracting compound drugs.

The invention discloses a functional filler with a self-lubricating surface and used for creating the simulated common nepenthes effect, in particular an aerogel loaded cleaning functional filler which is prepared by aerogel particles and lubricants. The aerogel loaded cleaning functional filler can be used for compositing with macromolecule and other base materials to prepare self-lubricating bionic surfaces. The functional filler can seal lubricants inside base materials to let the lubricants seep out gradually, thereby having a slow release effect. On one hand, the aerogel loaded cleaning functional filler can overcome the defect of easy loss of the smooth and porous surface lubricants for creating the simulated common nepenthes effect in an infiltration method , and on the other hand, as there is no need to create a coarse surface structure on the self-lubricating surface for creating the simulated common nepenthes effect, it is favorable to realize industrial application of the functional filler, such as being used in marine antifouling materials, frost prevention materials, anti-icing materials and oil-water separation materials.

The invention discloses bio-fertilizer and a preparation method thereof. The bio-fertilizer comprises, by weight, 180-200 parts of fertilizer body, biological bacteria including 0.08-0.09 part of bacillus thuringiensis, 0.1-0.15 part of paenibacillus polymyxa, 0.2-0.25 part of azotobacter chroococcum, 0.05-0.07 part of bacillus subtilis, 0.1-0.15 part of lactobacillus acidophilus and 0.1-0.15 partof lactobacillus bulgaricus, 18-20 parts of functional carrier and auxiliary materials, the functional carrier is obtained by mixing zeolite, sepiolite and bentonite, and the auxiliary materials include 0.1-0.2 part of polyglutamic acid, 5-6 parts of potato powder, 0.1-0.2 part of humic acid, 5-6 parts of volvaria volvacea, 4-5 parts of garlic, 8-10 parts of pleurotus ostreatus and 12-13 parts ofselenium ore. Aiming at the characteristic that vegetables or fruit plants are low in efficiency of absorbing inorganic selenium, the selenium ore is ground into powder which is then prepared into asolution and a culture medium to culture zymophyte, and the cultured zymophyte serving as fertilizer can be absorbed by plants better, so that selenium content of planted and treated vegetables and fruits is increased. The solution formed by selenium ore powder is treated layer by layer, so that selenium therein is retained, and heavy metals therein are eliminated.

The invention relates to a method for preparing a slow-release soil heavy metal passivator by using pig bones, and belongs to the technical field of preparation of soil remediation agents. The methodcomprises the steps that the pig bones serve as raw materials and put into a glue steaming pot after being smashed, the bone collagen contained in the bone material can be deintegrated under the effect of thermal energy and pressure of high temperature steam, colloid exudes from the bone cell wall gradually, bone glue and pig bone residue are obtained through hot water dipping and extraction, theextracted pig bone glue is mixed and reacts with mussel adhesive proteins to prepare a slow-release adhesive under the effect of bio-enzymes, finally the pig bone residue is mixed and pelletized withthe self-prepared slow-release adhesive after being ground, and the slow-release soil heavy metal passivator is obtained. The prepared slow-release soil heavy metal passivator is good in passivation effect, long in effective acting time, excellent in slow release effect, and wide in application prospect.

The invention discloses a method for cross-linking chitosan by radiation of electron beams and relates to a method for cross-linking the chitosan. The invention solves the technical problem that due to the introduction of a cross-linking agent, the application range of a cross-linked product of the chitosan is limited to a great extent. The method comprises the following steps of: 1, adding the chitosan into aqueous solution of lactic acid to obtain mixed solution; 2, vacuumizing the mixed solution, carrying out vacuum plastic packaging and then radiating by utilizing high frequency electron beams to complete the cross-linking of the chitosan by radiation of the electron beams. The invention provides the method for cross-linking the chitosan by radiation of the electron beams. Compared with other methods, the radiation cross-linking method has the advantages that any additive does not need to be added; synthesized high polymer has high purity; no problems of residual additives and the like are generated; and the polymer with a single-component system, which does not contain other impurities, can be obtained. Therefore, the difficult problems of introduction of the cross-linking agent and treatment of the residual cross-linking agent, which are generated when the cross-linked chitosan is applied in the field of medicine, can be solved.

The invention discloses a carbonization straw microbe fertilizer and a preparation method thereof. The carbonization straw microbe fertilizer comprises the following raw materials by weight part: 20-30 parts of wheat straw, 25-40 parts of rape straw, 10-14 parts of soybean straw, 5-10 parts of laterite, 1-2 parts of urea, 3-5 parts of beneficial microbe bacterial classification, 2-4 parts of polyvinyl alcohol, 6-10 parts of starch, 20-30 parts of kaolin, 10-15 parts of kali, 20-28 parts of ammonium carbonate, 16-22 parts of calcium-magnesia phosphate fertilizer, 6-10 parts of potassium nitrate, 4-5 parts of cross-linking agent and a proper amount of water. According to the invention, the microbe bacterial classification is embedded by polyvinyl alcohol and starch, and is mixed with straw charing products and basic nutriments required by vegetation to prepare the fertilizer, straw is charred to obtain the crude active carbon component, the carbonization straw has active carbon multiple function and has slow release efficacy of an inorganic nutrition element, the carbonization straw and the microbe bacterial classification are used for the fertilizer, so that fertilizer utilization rate is increased, absorption is promoted, and environment pollution is reduced.

The invention provides an organic and inorganic slow-release compound fertilizer and a preparation method thereof, and relates to the technical field of chemical fertilizers. The organic and inorganic slow-release compound fertilizer comprises potassium sulfate, humic acid, monoammonium phosphate, thiamine, urea and a slow-release agent. The preparation method comprises the following steps: preparing materials, batching materials, mixing, granulating, drying, cooling, sizing, enveloping membranes, packing and entering warehouse. The chemical fertilizer provided by the invention can enable active ingredients to be released slowly and gradually, the fertilizer consumption is reduced, the utilization rate is improved, the construction is convenient, the labor is saved, the safety is achieved, the soil environment is improved, and the soil looseness degree is improved.

An organic fertilizer with water retention suitable for cucumber plantation is prepared by using the following raw materials, by weight, 10-12 parts of vermiculite gravel, 6-8 parts of cucumber stem, 7-9 parts of shell powder, 3-5 parts of carragheenan powder, 5-7 parts of starch, 14-17 parts of poultry manure, 12-14 parts of rice bran, 15-18 parts of clay, 2-3 parts of EM bacterial strain, 5-7 parts of potassium humate, 6-8 parts of monoammonium phosphate, 10-14 parts of potassium nitrate, 3-4 parts of pimacol, 8-10 parts of copper sulfate pentahydrate, 5-6 parts of an assistant and a proper amount of water. The fertilizer is an organic fertilizer benefiting cucumber plantation. The key elements of cucumber plantation are abundant organic matters in soil, good water retention of soil and strong permeability. In the invention, carragheenan is cross-linked and compounded with various inorganic chemical components, organic matter fermentation is carried out to prepare the fertilizer, elastic colloids generated after the combination of the heated and dissolved carragheenan with chemical ions and cooling have adsorption and cross-linking characteristics, can effectively preserve nutrients and have a slow release effect, the especially added vermiculite gravel can prevent soil hardening and increase the ventilation and the water supply of cucumber roots, and various biological factors are produced after fermenting the cucumber stem in organic matters are in favor of the cucumber growth according to biological natural substance cycle use.

The invention discloses strile absorbent sutures for gynaecology and obstetrics and a preparation method of the strile absorbent sutures. The strile absorbent sutures for the gynaecology and obstetrics are prepared by taking chitosan silk threads as core threads, taking modified polylactic acid silk threads as shell threads, after stranding braiding, immersing the chitosan silk threads and the modified polylactic acid silk threads into coating liquid containing calcium stearate and polylactic acid and drying the liquid. Through the preparation method, the mechanical properties and hydrophilicproperties of the polylactic acid can be improved, and the prepared sutures have high strength and good biocompatibility; chitosan in the inner part of the sutures degrades slowly, while long-term antibacterial action is achieved, the sutures can further gradually form a hollow structure, thus ingrowth and healing of tissue is promoted, and the effect of accelerating the healing of the tissue is achieved; and the overall preparation process is simple and convenient to control, and needs of practical production and application can be met.

The invention provides a method for preparing ammonium potassium polyphosphate from acid potassium dihydrogen phosphate, which comprises the following steps: mixing acid potassium dihydrogen phosphateand a condensing agent, and heating to perform polymerization reaction to obtain ammonium potassium polyphosphate, wherein the mass ratio of the acid potassium dihydrogen phosphate to the condensingagent is 20:(1-10), and the temperature of the polymerization reaction is 140-200 DEG C. The preparation method disclosed by the invention is simple and convenient, wherein the reaction temperature isonly 200 DEG C at most, and extra ammonia is not required. The preparation method is carried out under a normal pressure condition and is free of high-temperature and high-pressure special equipment,so that the high-quality potassium ammonium polyphosphate fertilizer can be produced by only adopting common chemical equipment and chemical raw materials, and the market prospect is very good. The total nutrient N + P2O5 + K2O of the potassium ammonium polyphosphate product prepared by the preparation method is greater than 85% and the polymerization degree is 2-20, so that the potassium ammonium polyphosphate product has good water solubility, and the polymerization rate is greater than 95%.

The invention discloses an eye cream composition containing an anti-blue-light lipidosome and a preparation method thereof. The anti-blue-light eye cream is prepared from the following raw material components: 1.0-35.0% of an anti-blue-light lipidosome, 5.0-40.0% of an emollient, 0.5-30.0% of an emulsifier, 0.5-20.0% of a filler, 0.1-10.0% of a thickener, 0.3-5.0% of a preservative, 0.01-1.0% of daily essence and the balance deionized water. The eye anti-blue-light lipidosome is prepared by combining a rhodiola crenulata root extract, a porphyra umbilicalis extract and carnosine. Therefore, the liposome is prepared from the three anti-blue-light functional components and has better transdermal absorption and slow release effects. The anti-blue-light functional components have strong antioxidant ability, can remove free radicals generated by blue light irradiation, effectively delay skin aging caused by blue light, reduce pigmentation and stain generation, repair light loss skin, effectively maintain skin elasticity, make skin bright and uniform, keep skin young and vigor, and improve other aging phenomena of skin around eyes.

The present invention discloses a plant extract compound bacteria-reducing agent. The plant extract compound bacteria-reducing agent is composed of the following components in parts by weight: 5-10 parts of star anise essential oil, 5-10 parts of clove essential oil, 5-10 parts of spearmint essential oil, 5-10 parts of isopropyl myristate, 10-20 parts of a garlic water extract, 0.5-1 part of lactic acid, 80-160 parts of distilled water, 15-30 parts of Tween 80, 15-30 parts of RH-40 and 15-30 parts of absolute ethyl alcohol. The present invention also discloses a preparation method of the plant extract compound bacteria-reducing agent. The plant extract compound bacteria-reducing agent has obvious bacteria-preventing and bacteria-reducing effects on food-borne bacteria commonly found in life, such as escherichia coli, staphylococcus aureus, bacillus subtilis, candida albicans, shigella dysenteriae, etc.

The invention provides a biodegradable seedling raising tray capable of containing a micro-fertilizer suitable for mechanical transplanting and a preparation method of the seedling raising tray. The biodegradable seedling raising tray capable of containing the micro-fertilizer is prepared from, by weight, 50-80 parts of full-biobased degradation resin, 10-40 parts of biobased filler and 0.5-5 parts of an assistant. The biodegradable seedling raising tray capable of containing the micro-fertilizer is further prepared from, by weight, 0.5-6 parts of the micro-fertilizer. The micro-fertilizer comprises one or more of iron, zinc, copper, manganese, boron, molybdenum and nickel. The preparation method of the biodegradable seedling raising tray capable of containing the micro-fertilizer comprises the following steps of mixing of raw materials, extrusion and granulation, preparation of a sheet and forming of the seedling raising tray. The biodegradable seedling raising tray capable of containing the micro-fertilizer suitable for mechanical transplanting and the preparation method of the seedling raising tray have the advantages that the biodegradable seedling raising tray is prepared by adding different kinds of microelements (the micro-fertilizer) into a degradable material, the effect of the micro-fertilizer application can be achieved, the micro-fertilizer is applied accurately anduniformly and released slowly, and poisoning caused by excessive application of the micro-fertilizer is avoided.

The invention belongs to the technical field of preservation in food processing, and in particular relates to an antibacterial damping foam for fruits and vegetables. The antibacterial damping foam is mainly prepared by use of a template porous making method after adding compound antibacterial agent, tributyl citrate and sodium bicarbonate in polylactic acid, wherein the compound antibacterial agent is formed by mixing linalool and citral in a mass ratio of (1 to 9)-(9 to 1); the mass ratio of the polyactic acid to the compound antibacterial agent is (1 to 0.1)-(1 to 0.2), the mass ratio of the polyactic acid to the tributyl citrate is (1 to 0.03)-(1 to 0.05), and the mass ratio of the polyactic acid to the sodium bicarbonate is (1 to 12)-(1 to 15). The antibacterial damping foam for the fruits and vegetables disclosed by the invention not only has the damping effect in a logistics process, but also has the bacteriostasis in a storage process, thereby playing a lasting preservation effect and reducing the loss in the logistics storage and transportation processes of the fruits and vegetables.

The invention discloses a long-acting antibacterial negative ion polypropylene material and a preparation method thereof. The antibacterial polypropylene material is prepared from the following components in parts by weight: 88.6 to 67.0 parts of polypropylene, 3 to 18 parts of an antibacterial agent filler, 7 to 12 parts of a toughening agent, 0.4 to 0.9 part of an antioxidant, 1 to 1.5 parts ofa lubricant and 0.2 to 0.6 part of a coupling agent. The preparation method comprises the following steps: adding the components into a high-speed mixer, performing dry mixing for 5-10min, adding theuniformly mixed raw materials into a double-screw extruder, and performing melt extrusion granulation. The invention discloses that the hollow structure of hollow halloysite is utilized for a first time, an amino acid / ZnO / tourmaline nano composite material with excellent antibacterial performance is loaded to and exists in a hollow structure of halloysite through a self-assembly reaction at normaltemperature, so that the antibacterial material is protected in the use process and is not prone to precipitation and failure along with severe use environments such as moisture, heat and abrasion.

The invention relates to the field of traditional Chinese medicine preparation, discloses an intelligent hydrogel for preventing and treating cervical diseases, and also discloses a preparation methodthereof. The intelligent hydrogel is prepared from block copolymer of polyoxyethylene polyoxypropylene ether, polyglutamic acid, hyaluronic acid, yeast dextran, glycyrrhizin organic polymer, compoundzedoary turmeric oil, fructus cnidii, radix sophorae flavescentis, water-soluble alpha-bisabolol, phellodendron, borneol, dandelion, anthocyanidin and so on. In a fluid state when injected into the body, After entering the body, it quickly distributes to the surface of the cervix and the bottom of the vagina, effectively covers the wound surface, and then the hydrogel is heat exchanged with the human body in the body to form a stable gel, and a gel layer with a spatial network structure is formed on the surface of the whole cervix and the bottom of the vagina, so that the drug ingredients inthe hydrogel can play a lasting role. The hydrogel can promote the convergence of cervical wound erosion surface, remove odor, reduce seepage fluid and blood, improve erosion, alleviate leucorrhea, and restore normal vaginal environment.