454results about How to "In line with the concept of green environmental protection" patented technology

The invention discloses an electromagnetic shielding material and a nano-grade composite material thereof, and preparation methods thereof. The preparation method of the electromagnetic shielding material comprises the following steps: (1) graphene oxide and carbon nano-tube are uniformly dispersed in a solvent I; and an ultrasonic stripping treatment is carried out, such that a graphene oxide / carbon nano-tube mixed solution is obtained; (2) a metal salt water solution and a surfactant are added, such that a metal salt / graphene oxide / carbon nano-tube mixed solution is obtained; and (3) an irradiation treatment is carried out with gamma rays or electron beams, such that the electromagnetic shielding material is obtained. The preparation method of the electromagnetic shielding-polymer nano-grade composite material comprises the following steps: a polymer and the electromagnetic shielding material are uniformly dispersed in a solvent II, such that a mixed liquid is obtained; and solid is collected, such that the composite material is obtained. The method provided by the invention has the advantages of low cost, low solvent toxicity, simple operation, and mild conditions. The use of a vapor deposition method with complicated processes or a water / solvothermal method with harsh conditions is avoided. Therefore, the method has high applicability, and can be used in macro productions. The method has a good application prospect.

The invention provides a denim washing pumice-replaced environmental biological coarse pattern enzyme preparation and an application thereof. The denim washing pumice-replaced environmental biological coarse pattern enzyme preparation is characterized by being prepared by coarse grain biological cellulose enzyme, pH buffering agents, anti-backstaining agents and filling agents. The denim washing pumice-replaced environmental biological coarse pattern enzyme preparation comprises, by proportion, 2% to 4% of the coarse grain biological cellulose enzyme, 8% to 10% of the anti-backstaining agents, 0.18% to 0.2% of sodium tripolyphosphate, 0.8% to 1.1% of sodium dihydrogen phosphate, 0.8% to 1.1% of adipic acid and 83.6% to 88.22% of the filling agents. By means of the environmental biological coarse pattern enzyme preparation, the denim is subjected to enzyme abrasion washing, effects which are identical to or even better than that of pumice stone washing are achieved, the wearing pattern is coarse and clear, the degree of uniformity is good, the denim touches soft, the cost is saved, and low carbon and environment protection are achieved.

The invention provides a preparation method and application of rosemary hydrosol. The preparation method of the rosemary hydrosol comprises the following steps: providing rosemary leaves, putting into water vapor distillation equipment for water vapor distillation, extracting to obtain an oil and water co-mixture and obtaining rosemary essence and rosemary crude hydrosol after oil and water separation; adding the rosemary crude hydrosol into molecule distillation equipment, regulating the distillation temperature of the molecule distillation equipment to be 10-50 DEG C, the condensing temperature to be 0-5 DEG C and the pressure intensity to be 1000-3000 Pa, performing molecule distillation, separation and purification, obtaining light components and heavy components and collecting the heavy components to obtain the rosemary hydrosol.

The invention discloses a preparation method of interpenetrating network type waterborne polyurethane-acrylate composite emulsion. The method comprises the following steps: firstly introducing polyether-tribasic alcohol, so as to obtain elastomeric polyurethane prepolymer, then taking hydroxyethyl acrylate as an end-capping reagent, so as to obtain polymerizable waterborne polyurethane dispersion, finally taking the waterborne polyurethane dispersion as seed emulsion, and adopting a full speed pre-emulsification swelling method and a semicontinuous emulsion polymerization method, so as to obtain the interpenetrating network type waterborne polyurethane-acrylate composite emulsion. According to the method, a novel and environmentally friendly hydrophilic chain-extender 2,2-dimethylolbutyric acid (DMBA) is selected, water is adopted as dispersion medium, and no organic solvent, metal catalyst or emulgator is adopted, so that the method conforms to the philosophy of environmental protection. The method is high in operability and simple in technology, and the emulsion prepared through the method is stable in performance.

The invention provides a preparation method of high-purity boehmite, belonging to the technical field of synthesis of metallic organic compounds. The preparation method comprises the following steps of: preparing alkoxyl aluminum by adopting metallic aluminum with the purity more than 99.5 percent and mixed alcohol of C5-C8 and n-butyl alcohol under the existence of aluminum choride and alkylbenzene solvents; and hydrolyzing, aging and drying the alkylbenzene to obtain the high-purity boehmite. The invention overcomes the defects that the purification is difficult when the alkoxyl aluminum is prepared with low-carbon alcohol and the reaction efficiency is low when the alkoxyl aluminum is prepared with high-carbon alcohol and can obtain the boehmite with the purity up to 99.9 percent by controlling the proportion of the mixed alcohol and the metallic aluminum and the hydrolysis condition. The method provided by the invention ensures that the preparation process of the high-purity boehmite is simplified, the preparation efficiency is high, and the preparation cost is low.

The invention discloses an ecological ditch for rural domestic sewage collection and pretreatment and belongs to the field of rural sewage treatment. The ecological ditch for rural domestic sewage collection and pretreatment comprises a plurality of branch ditches and a main ditch. Torrent pollutant intercepting structures or slow flow pollutant intercepting structures are arranged at the water flow elevation changing positions of the branch ditches and the main ditch. Road intersection structures are arranged at the intersection positions between the branch ditches and roads and between the main ditch and roads. Each torrent pollutant intercepting structure is composed of a spherical suspended filler strand and an overflow weir. Each spherical suspended filler strand is formed by a plurality of spherical suspended fillers and a nylon rope which are connected in series. Each slow flow pollutant intercepting structure is formed by a slow flow pollutant reducing slope and a slow flow phytoremediation band which are connected. The ecological ditch for rural domestic sewage collection and pretreatment has the remarkable functions of rural domestic sewage collection and pretreatment, can effectively reduce the processing load of a follow-up process, and enables water to stably enter the follow-up process. In addition, the ecological ditch for rural domestic sewage collection and pretreatment will not cause secondary pollution, achieves waste resource utilization, and conforms to the environmental protection concept. Besides, the ecological ditch for rural domestic sewage collection and pretreatment is low in building cost and maintenance cost and is good in popularization and application value.

The invention discloses a positive electrode material of a high-capacity lithium ion battery and a preparation method of the positive electrode material. The preparation method comprises the following steps: dissolving raw materials into de-ionized water to prepare a mixed solution A and a mixed solution B, which have the same volume and different concentrations; adding a sodium hydroxide solution and an ammonia water solution into a container C in a parallel flow manner to be subjected to co-precipitation, so as to prepare a co-precipitate Ni1-x-yCoxAly(OH)2+y precursor; after ageing, filtering, washing and drying the prepared co-precipitate precursor, uniformly mixing the co-precipitate precursor with a lithium source; pressing and molding mixed materials, putting the mixture into a pipe furnace for presintering, and sintering the mixture in an oxygen / oxygen-enriching air airflow to obtain a target product. The positive electrode material of the lithium ion battery, provided by the invention, has no impure phases and has high crystallization quality; the product has a uniformly-distributed grain diameter and a regular spherical shape, and has a very high specific discharge capacity and relatively excellent circulating stability; the positive electrode material can meet high-energy density and high-power charging and discharging requirements, a process is simple and a manufacturing cost is relatively low.

The present invention belongs to the field of lithium-ion batteries, and provide a modified lithium-ion battery positive electrode material LiNi1-xCoxO2@LiAlO2 with high thermal-stability LiAlO2 coated on the LiNi1-xCoxO2 surface, and a preparation method thereof. A purpose of the present invention is to overcome the disadvantages of overcharging intolerance and pool thermal-stability of the lithium-ion battery LiNi1-xCoxO2 (x is more than 0 and is less than or equal to 0.5) positive electrode material. According to the present invention, the positive electrode material of the present invention has characteristics of good thermal-stability, good discharge specific capacity and excellent cycle stability compared with the LiNi1-xCoxO2 positive electrode material, can meet the large rate charge and discharge requirements, and is especially suitable for the positive electrode material of the electric vehicle power battery; and the product prepared through the preparation method has characteristics of high purity, high chemical uniformity, good coating effect, high crystal quality, fine particle, uniform distribution, excellent electrochemical performance and low manufacturing cost.

The invention discloses a cellulose-based guanidine salt bacteriostatic material and a preparation method thereof. The bacteriostatic functional material which is pollution-free, low in cost and naturally degradable is prepared by homogeneously grafting a modified guanidine salt oligomer containing an unsaturated bond to cellulose in ionic liquid. The natural cellulose in the prepared bacteriostatic material is a safe and degradable matrix, the group achieving a bacteriostatic effect is a polymonoguanidine or polydiguanidine repeated unit, the degree of polymerization is 11-19, the cellulose has an excellent inhibiting effect on bacteria and mildew, and the rate of grafting guanidine groups to the cellulose by using the ionic liquid as a homogeneous medium is 15-80%. The prepared cellulose bacteriostatic functional material can be processed into thin films, fibers or other forms and applied in the fields of food and medicine packages, textiles and health products, can inhibit the growth of pathogenic bacteria, and accords with the psychological demands of customers and product manufacturers, so that the cellulose bacteriostatic functional material has great practical application values and economic benefits.

The invention provides a wireless control device, which comprises an IC storage card slot or a chip socket, an IC storage card or a storage chip, a wireless receiving module, a controller, a switching assembly and a wireless transmitting module. When the received transmitting identification code is matched with the receiving identification code of the wireless control device, the controller controls the switching assembly according to the control instruction, and controls the wireless transmitting module to transmit the control instruction to the wireless control device of the next hop according to the transmitting identification code of the wireless control device. The control instruction can be transmitted step by step through a plurality of relay wireless control devices so as to avoid using expensive GSM / CMDA modules and greatly reduce the cost.

The invention discloses a preparation method of a metal oxide loaded monatomic catalyst. The method comprises the following steps: 1. mechanical ball milling: dispersing a noble metal compound in a metal oxide by using a mechanical ball milling method to obtain a monatomic catalyst precursor with the noble metal content of 0.01-5wt%; and 2, high-temperature roasting: simply roasting the monatomiccatalyst precursor obtained in the step 1 in air, and cooling to room temperature to obtain the corresponding monatomic catalyst. By utilizing the ball mill, the noble metal compound can be uniformlydistributed in the oxide carrier in a fully dispersed state, and very good conditions are created for the formation and stabilization of metal single atoms. In the preparation process, almost no lossof raw materials is caused, and the concept of environmental protection is met. The method realizes simple preparation of the metal monatomic material, has good expansibility and reproducibility, andsolves the problems of low metal content, few types, complex preparation method, high cost, large carrier loss and the like in the prior art.

The invention discloses a degradable composite material and a preparation method thereof, and belongs to the technical field of polymer processing and modification. The degradable composite material comprises the following components in parts by weight: 50-90 parts of polylactic acid A, 0.1-10 parts of polylactic acid B (the polylactic acid A and the polylactic acid B are optical isomers), 1-20 parts of a degradable polyester C, 1-50 parts of a polylactic acid B-degradable polyester C copolymer and 0.1-5 parts of a functional additive. The degradable composite material disclosed by the invention not only has excellent toughness, but also has excellent heat resistance, is completely biodegradable, and can be widely applied to the fields of plastic structural parts, plastic packages, automotive upholstery, medical consumables and the like.

The invention relates to a high-efficiency acylation production method of an L-methionine nonaqueous solution. The novel process is bold in innovation and is mainly a bold reformation to an acylation process. The method comprises the following steps of: directly dripping acetic anhydride into DL-methionine for carrying out an acylation reaction by using acetic acid as a reaction solution, and after the reaction ends, evaporating to recover the acetic acid; directly adding water to acetyl DL-methionine to regulate the pH value without crystallizing; adding biological catalysis enzyme, inorganic catalysis enzyme, and the like; and entering a split procedure. The method is characterized in that the yield of the L-methionine nonaqueous solution reaches 126-128 percent, the sewage discharge quantity is reduced by 2 / 3, and the total yield of the L-methionine nonaqueous solution is improved to 60 percent. The process has reasonable and feasible comprehensive cycle process, conforms to a green and environmental protection idea, purifies the environment, promotes the ecological balance, reduces the production cost and enhances the social and economic benefits.

The invention relates to an intelligent control hand disinfection instrument capable of conducting identity recognition. The disinfection instrument comprises an intelligent control module, a liquid supply and drying part and a product shell. The intelligent control module comprises a power supply module (101), a main control panel module (201), an identity recognition module (301), a peripheral interface (210) and a peripheral interface (220). According to the hand disinfection instrument, an advance microchip control technology is adopted, effective management and monitoring on hand hygiene compliance of staff in the field such as medical institutions and food and pharmaceutical industries are facilitated, the hand hygiene compliance is improved, and it is guaranteed that disinfection of the fields which have high hygiene requirements accords with the requirements. Meanwhile, according to disinfectant matched with the hand disinfection instrument for use, ethanol and chlorhexidine are the main components, clean water washing is not needed, waste is not produced, and the concept of green and environmental protection is met. An RFID tracking technology is adopted in production, transport, distribution and use of the whole disinfectant, and it is guaranteed that the disinfectant is safe and reliable and is not counterfeited.

The present invention relates to the technical field of polymer material preparation, and especially to an air-drying unsaturated polyester resin for an easy-polishing gel coat, and a preparation method thereof. The resin is prepared by the following steps, wherein the steps comprise that: an organic polyol and a renewable vegetable oil are subjected to an ester exchange reaction, and then are subjected to a condensation polymerization with a small molecule dihydric alcohol or a dibasic acid, tetrahydrophthalic anhydride and allyl ether; the formed polymer is dissolved in styrene to prepare the resin. The air-drying unsaturated polyester resin of the present invention has the following advantages that: (1) the renewable vegetable oil is selected as the main component, such that the use of the toxic and harmful chemical engineering raw materials is reduced so as to meet the green environmental protection concept; (2) the vegetable oil, the tetrahydrophthalic anhydride, the allyl ether and the like in the resin component provide good air-drying properties, such that the resin can be widely applicable for the fields with high air-drying requirements. The resin of the present invention is mainly applicable for the easy-polishing gel coat with the high air-drying requirements, and has characteristics of excellent toughness, excellent adhesion, excellent weather resistance, excellent polishing property and the like. In addition, the resin of the present invention has good air-drying property, and the gel coat prepared by the resin of the present invention has characteristics of good adhesion, low porosity, easy polishing and the like.

The invention relates to a method for adsorbing and desorbing six phenoxy carboxylic acid herbicides in water with a nitrate-type layered double hydroxides (LDHS) adsorbent. Aiming at the problem that an efficient adsorbent for phenoxy carboxylic acid herbicides in water and an application method of the efficient adsorbent are unavailable at present, the method adopting nitrate-type LDHS as an adsorbent and used for adsorbing and desorbing the six phenoxy carboxylic acid herbicides in water through the steps of regulation of the pH value of a water sample, adsorption through a dispersive solid-phase extraction method, washing with deionized water, desorption with a disodium hydrogen phosphate desorbent, and the like is created. The selected nitrate-type LDHS adsorbent is good in dispersity in an aqueous solution and has an efficient adsorption capability for the six phenoxy carboxylic acid herbicides; adsorption and desorption are carried out through a dispersive solid-phase extraction method, the operation is simple, convenient, easy, fast and efficient; meanwhile, no organic solvent is needed for adsorption and desorption, so that the method accords with the idea of environmental friendliness.

The invention relates to a distribution transformer heavy overload identification early warning method based on a neural network and terminal equipment, and the method is used for identifying and early warning a heavy overload event of a distribution transformer in a certain day, and comprises the following steps: 1) obtaining basic data of the distribution transformer in each transformer area tobe identified, and carrying out the preprocessing of the basic data; 2) based on the preprocessed basic data, carrying out coarse prediction classification on each transformer area distribution transformer, wherein the category of the coarse prediction classification comprises first-level safety, second-level safety and second-level attention; and 3) judging whether a transformer area distributiontransformer belonging to second-level attention exists or not, if so, performing fine prediction on the transformer area distribution transformer belonging to the second-level attention by adopting the trained GRU type neural network, outputting distribution transformer early warning information based on a fine prediction result, and if not, outputting distribution transformer normal information.Compared with the prior art, the method has the advantages that the state of dynamic monitoring at any time can be kept, the computing power can be saved, and the accurate prediction effect is achieved.

The invention relates to an oven, which comprises a main body having a liner, wherein a roller-type grill basket module which can be driven by a driving motor to rotate is installed inside the liner, the roller-type grill basket module comprises an upper grill basket and a lower grill basket, which are connected with each other in the vertical direction in an open-close way, the roller-type grillbasket module is provided with a rotating shaft to be coupled and connected with the driving motor, the roller-type grill basket module is detachably connected with a handle module, and the liner is provided with an internal circulating airflow module. The inner bottom parts of the upper grill basket and the lower grill basket are respectively provided with a stop block. The edges of openings at one sides of the upper and the lower grill baskets respectively extend out to form a wind breaking plate to be symmetric to each other, and the edges of openings at the other sides of the upper and the lower grill baskets are respectively connected with the wind breaking plates in a buckling way. The roller-type grill basket module is rotated along the rotation of the motor, annular airflow is produced by the internal circulating airflow module inside the liner, and through holes and the wind breaking plates are arranged on the roller-type grill basket module to be more convenience for the annular airflow to pass through, so the roller-type grill basket module can be quickly preheated, the energy consumption is low, the cooking efficiency is high, the use cost can be saved, and the environmental protection concept of modern people can be satisfied.

Illuminator of using kinetic energy includes piezoelectric generating transducer and luminous element light emitting diode connected to each other. The piezoelectric generating transducer uses PZT piezoelectric ceramic as transduction material. The illuminator of using kinetic energy further includes transforming storage connected to piezoelectric generating transducer as well as flashing light sequence control part, which is connected to luminous element, for controlling time sequence of luminescence. The disclosed illuminator of using kinetic energy uses parasitical energy to glow, possessing features of lightweight, small size, low cost, relative high output electric quantity, and convenient transmission of electric energy.

The invention discloses a metal solid solution modified high-nickel ternary anode material and a preparation method thereof. The material is of a core-shell structure which comprises a high-nickel ternary anode material matrix, a transition layer and a coating layer sequentially from inside to outside, wherein the coating layer comprises metal lithium salt and one or more solid solution anode active substance generated by reaction between a heterogeneous metal precursor and a high-nickel ternary anode material precursor; the transition layer is a high-nickel ternary anode material doped by a heterogeneous metal element. The preparation method comprises the following steps: (1) uniformly mixing the high-nickel ternary anode material precursor, the heterogeneous metal precursor and the lithium salt to obtain a mixture; (2) performing high-temperature calcination of the mixture to obtain the metal solid solution modified high-nickel ternary anode material. The technological process is simple, and the production process is environmentally friendly; the metal solid solution modified high-nickel ternary anode material has higher thermal stability, large charge-discharge capacity and excellent cycle performance, and can be applied to the consumption field with requirements on high capacity and high safety.

The invention belongs to the technical field of road facilities and particularly relates to a sewer filter. The sewer filter is characterized by comprising a well cover, an upper box and a lower box, a plurality of through holes 3-5 cm are uniformly formed in the wall of each of the boxes, the well cover is arranged at the upper end of the upper box embedded in the lower box, a pressure sensor is arranged on one side of the lower end of the upper box, and warning lights are arranged on street lamps near the well cover. The sewer filter is simple in structure and convenient to use; by the secondary filter method integrating the upper box and the lower box, the sewers are prevented from blocking, in this way, even in rainy days, water on the road of the urban flows smoothly; production cost is lowered so as to facilitate promotion and application.

The invention provides environment-friendly anticorrosive paint and a preparation method thereof. The environment-friendly anticorrosive paint comprises a main agent and a curing agent. The main agent is prepared from, by weight of 100 parts, 39-50 parts of low-viscosity solvent-free epoxy resin, 4-8 parts of diluents, 5-15 parts of toughening resin, 0.5-15 parts of toner, 10-40 parts of filler, 5-15 parts of low-viscosity epoxy ester resin and 0.5-1.5 parts of a thixotropic agent. The curing agent is modified amine resin.

The invention provides tread rubber for all-steel truck radial tire and a preparation method thereof, and belongs to the technical field of tread rubber. The tread rubber is prepared from the following components in parts by weight: 0 to 80 parts of matrix rubber, 30 to 153 parts of wet mixed rubber, 2 to 8 parts of an active agent, 0 to 50 parts of carbon black, 0 to 20 parts of white carbon, 0 to 4 parts of a silane coupling agent, 1 to 3 parts of an accelerator, 3 to 6 parts of an anti-aging agent and 1 to 2 parts of a vulcanizing agent, wherein the wet mixed rubber is prepared from 0.1 to3 parts of carbon nanotubes, 0.1 to 1 part of graphene, 10 to 50 parts of cracked carbon black and 20 to 100 parts of natural rubber, and is obtained by wet mixing; and the total number of parts of the natural rubber in the wet mixed rubber and the matrix rubber is 100. The tread rubber is excellent in material mechanical property, good in processing performance, low in production cost and favorable for promoting recycling of used tires.

The invention relates to a green synthesis method of anticoccidial veterinary drug Ethanamizuril, and solves the technical problems that in the prior art, an Ethanamizuril production method needs tensteps of reaction, the reaction steps are complex, the raw materials are difficult to obtain and high in price, the investment is large, the yield is low, the product quality is poor, the color is poor, and the method is not suitable for industrial production. According to the green synthesis method of anticoccidial veterinary drug Ethanamizuril, 4-chloro-3-methylaniline and EPC are taken as initial raw materials, diazo coupling, cyclization, hydrolysis, decarboxylation and condensation reaction are carried out to obtain the product Ethanamizuril. The method is widely applied to the technicalfield of veterinary drug synthesis.

The invention belongs to the technical field of preparation of a lithium ion battery high-nickel positive electrode material, and particularly provides a lithium phosphate coated lithium ion battery high-nickel positive electrode material and a preparation method thereof. The material and the preparation method are used for overcoming the defects of poor processing performance, harsh requirements on use environment, poor cycling stability, low first-circle coulombic efficiency and sharp reduction of high-temperature performance in the prior art. Lithium dihydrogen phosphate is taken as a coating raw material, and a fast ion conductor lithium phosphate coating layer is generated through in-situ reaction of lithium dihydrogen phosphate and residual alkali (LiOH and Li2CO3) on the surface of a parent material, so that lithium salt residues on the surface of the parent material are greatly reduced, the processing performance is improved, the requirement on a use environment is reduced, the ionic conductivity of the positive electrode material is increased, the number of lithium ions of the positive electrode material is increased, and phase change and interface side reaction are effectively inhibited, therefore, the lithium phosphate coated lithium ion battery high-nickel positive electrode material has excellent cycling stability and specific discharge capacity, and especially can maintain relatively good electrochemical performance at high temperature.

A one-way rotation type device capable of trapping mice continuously comprises a base plate, a center shaft, a fixing stop bar, a rotating grating wheel, a one-way bearing and a partition plate. The center shaft is fixed in the center of the base plate, a mouse inlet is formed in the side wall of the base plate, the fixing stop bar is fixedly arranged on the inner wall of the base plate, the one-way bearing is arranged on the rotating grating wheel, the center shaft is sleeved with the rotating grating wheel which can only rotate inside the base plate in one direction, and the partition plate is arranged on the base plate. The one-way rotation type device capable of trapping the mice continuously has the advantages of being simple in structure, low in cost, easy and convenient to operate, absolutely safe, suitable for being used in various environment places and different seasons and climates, very high in trapping success rate, capable of trapping the mice continuously and the like, and the device is friendly to the environment.

The invention discloses a self-cleaning water-based ceramic stereoscopic printing ink and a preparation method thereof. The printing ink is prepared from color slurry A and a diluent B according to the weight ratio of 1 to 1, wherein the color slurry A is prepared from, by weight, ceramic pigment 40-45%, resin 2-8%, propylene glycol 10-18%, water 15-30%, a dispersant 10-20%, a silane coupling agent 0.3-5% and a defoaming agent 0.05-0.5%, the thinner B is prepared from, by weight, ethylene glycol 50-60%, water 30-35%, sodium citrate 0.5-10%, a pH regulator 0.5-5%, graphene 0-1% and functional powder 2-5%, and the functional powder is prepared from rare earth compound phosphate powder, graphene / TiO2 powder and an inorganic antibacterial agent according to the weight ratio of (2-3) to (1-3) to (0-2). The compound antifouling and antibacterial material is adopted, so that the self-cleaning water-based ceramic stereoscopic printing ink has broad-spectrum, lasting and efficient antifouling and antibacterial properties and has good antifouling and antibacterial stability, a product has good weather resistance and abrasion resistance, does not produce uncomfortable odor, is non-toxic and nonirritant, and great convenience and benefits are brought to people on the aspects of the service life and appearance cleaning of ceramic.

The invention discloses an edible packaging membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: respectively soaking galangal, fructus amomi and bitter cardamom with an ethanol solution respectively, performing leach liquor centrifugation, concentrating so as to obtain an extract, performing macroporous resin column elution, concentrating an eluant to obtain extracts, namely a galangal extract, a fructus amomi extract and a bitter cardamom extract; performing ultrasonic decomposition decalcification by using fish scales with an EDTA (Ethylene Diamine Tetraacetic Acid) solution, adding an acetic acid solution and pepsase, performing enzymolysis, and performing spray-drying so as to obtain fish scale collagen powder; mixing the mixture of the galangal extract, the fructus amomi extract and the bitter cardamom extract with the collagen powder, adding glycerinum and chitosan, performing water bath, performing ultrasonic degassing, pouring onto a glass frame, baking, a peeling off, thereby obtaining the edible packaging membrane. Due to adoption of the galangal extract, the fructus amomi extract and the bitter cardamom extract, the antibacterial property and the oxidation resistance of the edible packaging membrane disclosed by the invention are improved, and effects of food preservation and shelf life prolonging are achieved.

The invention discloses a bagging composite material for fruits and vegetables, a preparation method therefor and application of the bagging composite material. The composite material comprises the following raw materials in parts by mass: 1-5 parts of film forming matter, 50-90 parts of dispersant, 0.1-2 parts of antibacterial plant essential oil-chitosan based micro-nano capsules, 1-10 parts ofplasticizer, 1-10 parts of nano reinforced particles and 0.5-5 parts of binder. According to the bagging composite material for the fruits and vegetables, the preparation method therefor and the application of the bagging composite material, a safe and efficient emulsifier, plant essential oil with broad bacteriostatic spectrum and high antibacterial property, and chitosan and derivatives thereofare employed, and the bagging composite material for the fruits and vegetables is prepared through effectively constructing long-acting sustained-release micro-nano capsules, i.e., a biological antibacterial agent based on an emulsion template method, and compounding the micro-nano capsules with the chitosan and derivatives thereof and a nano reinforced particle film forming solution; and the obtained composite material can be applied to the fruits and vegetables through a convenient spray coating mode, the slow release of the antibacterial plant essential oil can be achieved, the insect-proofing, antibacterial and freshness-preserving effects of the fruits and vegetables can be effectively improved, and thus, the quality of the fruits and vegetables is improved.

The invention relates to a red mud permeable brick and a method for preparing the same, and belongs to the field of technologies for recycling red mud. The red mud permeable brick and the method have the advantages that red mud can be recycled, accordingly, the problem of red mud pollution can be fundamentally solved, and permeable materials in urgent need can be provided for constructing sponge cities; the red mud permeable brick is high in permeable rate and compressive and breaking strength and excellent in freezing-thawing resistance, energy can be saved, environmental pollution due to the red mud can be completely eradicated, the red mud can be sufficiently and effectively utilized, and accordingly the economical, durable, healthful, environment-friendly and colorful novel permeable brick can be provided for society.