82results about How to "Barrier infiltration" patented technology

The invention relates to a water-retention and sand-fixing liquid mulching film and a preparation method thereof, and belongs to the technical field of agricultural production. The liquid mulching film comprises components in parts by weight as follows: 30-50 parts of ultrafine silica sol or nano-silica, 40-100 parts of carboxymethyl cellulose, 20-30 parts of N-isopropylacrylamide, 1-5 parts of ferrocene, 0.02-0.3 parts of a cross-linking agent and 0.4-1.2 parts of an initiator, wherein the solid content of the ultrafine silica sol is 10wt%-30wt%, and the particle size of silica is 1-100 nm. The liquid mulching film forms colloid easily with water, soil particles can be connected, structureless and dispersed sand soil is connected to form an elastic stable object, and a net-shaped film with good film performance and high strength is formed; one the one hand, surface pores of soil can be sealed, and soil moisture volatilization is blocked; on the other hand, moisture permeation is not inhibited, good water retention, soil moisture preservation and sand fixing functions are realized, and the performance of a desert and dry soil is improved effectively.

The invention provides a garbage embedding fiber covering material which comprises the following components in parts by weight: 5-30 parts of straws, 5-30 parts of paper, 5-20 parts of pulp sludge, 20-50 parts of kaolin, 0.01-0.1 part of eucalyptus bark and 0.01-0.5 part of a microbial strain solution, wherein microbial strains are spore strains. After being used and dried, a coating of the garbage embedding fiber covering material provided by the invention has main dual effects of gas permeability and water guide; a core microbial technology for quickly degrading household garbage organic pollutants is uniquely added to quickly and effectively deodorize and kill flies for a long time; meanwhile, the garbage embedding fiber covering material has the necessary physical strength and flame resistance; moreover, by adding functional additives and grass seeds, operations such as deodorizing, fly killing and greening can be completed by one step in a spraying and covering process.

The invention discloses a preparation method of an edible film for meat preservation. The preparation method comprises the following steps: S1, weighing raw materials in parts by weight; S2, adding 1-1.2 parts of chitosan, 1.15-1.6 parts of soy isolate protein and 0.3-0.6 part of glycerol into 20-30 parts of an acetic acid solution, and performing ultrasonic dispersion to prepare a mixed suspension; S3, dropwise adding 15-25 parts of a dialdehyde carboxymethyl cellulose solution into the mixed suspension, and carrying out a stirring reaction at 30 DEG C for 2-6 h to obtain a cross-linking solution; S4, heating the cross-linking solution to 35-38 DEG C, adding 0.02-0.03 part of propolis powder, 0.3-0.5 part of epsilon-polylysine and 0.01-0.02 part of lysozyme, stirring and immobilizing for0.5-1 hour, then adding 0.2-0.4 part of artemisia desertorum gum, and stirring for dispersing to obtain a film forming solution; and S5, casting to form a film, carrying out vacuum drying at 40 DEG Cfor 24 hours, and uncovering the film. The dialdehyde carboxymethyl cellulose is used as a cross-linking agent, so that the compactness of the edible film is improved; epsilon-polylysine, lysozyme andthe like are further immobilized and enriched in a film structure, so loss and dispersion of active ingredients are avoided, and the shelf life and the storage time are remarkably prolonged.

The invention discloses a concentrated solution resourceful treatment and refuse waterproof covering in-situ application process of a refuse landfill. The concentrated solution resourceful treatment and refuse waterproof covering in-situ application process comprises the following steps: (1) a solidified base material is put into a dry material mixing system to be mixed, and a solidified base material mixture is formed; (2) a concentrated solution generated after leachate is treated through a biochemical and film filtering process and the solidified base material mixture are put into a mixingstirring system jointly to be evenly stirred, and an even mixture is formed; and (3) a refuse leachate concentrated solution and a solidifying agent are added into the even mixture, a high-viscosity pasty composite material is formed, and the even mixture is evenly sprayed on the surface of an operating area of the refuse landfill through spraying equipment to directly cover the refuse landfill insitu. The surface of the operating area of the sanitary landfill is covered in situ directly, after drying, a hard film with rainproofing, fireproofing, odor isolating and deodorizing functions is formed, thus most rainwater is obstructed from permeating, and generation of the refuse leachate is reduced.

The invention relates to the field of external heat preservation of building external walls, aims to solve the problems that heat preservation external walls of structures such as windows and balconies need multi-block splicing resulting in multiple splicing seams and poor heat preservation performance, and particularly relates to an integrated fabricated heat preservation external wall. The integrated fabricated heat preservation external wall comprises a plurality of horizontally-arranged groove steel, the groove steel is connected with first wall plates corresponding to the window opening position and second wall plates corresponding to the wall surface position, the first wall plates are formed integrally, and the second wall plates are spliced mutually. The first wall plates and the second wall plates are sealed through sealing glue. Protruding edges are arranged on one set of adjacent side edges of the second wall plates in the length direction correspondingly in an extending mode. Grooves matched with the protruding edges are formed in the other set of adjacent side edges of the second wall plates. The protruding edges and the grooves are located in the middles of the side edges of the second wall plates. The first wall plates are manufacture and formed integrally according to a concrete window or balcony structure, the number of the splicing seams is decreased effectively, and heat preservation performance of the heat preservation external wall is improved, so that indoor and outdoor heat exchanging is reduced, and the effect of energy saving is achieved.

The invention relates to a spray covering process of solid pollution sources. The solid pollution sources include refuse landfills, sludge stockpiling sites, industrial waste stacking sites, mineral tailings ponds or solid pollution sources formed by contaminated sites. The spray covering process includes the steps that a curing base material, a curing agent and a solvent are mixed to form a highviscosity paste composite material, and the surfaces of the solid pollution sources are covered by uniform spraying of spraying equipment. According to the spray covering process, diversion of rain and sewage from solid pollution source piles or sites is realized, sewage generation caused by rainwater mixing is reduced remarkably, and safety of soil and groundwater in stacking sites is ensured; meanwhile according to stink source piles, the odor isolation (deodorization) effect is good, and friendly environment is achieved; and furthermore, the functions of fire prevention, dust prevention andseepage prevention are achieved, application is wide, and practicability is high.

The invention relates to a composite structure of a top plate waterproof pavement layer of an underground road under shallow burial soil. The composite structure is characterized by comprising a cement concrete protection layer, a synchronous rubble sealing layer, an epoxy resin waterproof layer and a cement concrete top plate in sequence from top to bottom. The composite structure of the top plate waterproof pavement layer has excellent waterproof performance and impact load resistance, largely improves the integrality and the effectiveness of an underground road waterproof system, improves the structural durability, and can satisfy the waterproof requirement of the underground road top plate.

Relating to the technical field of concrete protection, the invention in particular discloses a concrete protective agent and a preparation method thereof. The concrete protective agent includes the following raw materials by mass: 18-23 parts of a polyurethane emulsion; 30-43 parts of an acrylate monomer; 0.1-1 part of a carboxyl-containing monomer; 2-10 parts of a carbonyl-containing monomer; 0.2-0.8 part of an initiator; 2-9 parts of a cross-linking agent; and 32-38 parts of deionized water. The protective agent provided by the invention can be applied to brush coating on a concrete surfaceto form a protective coating, thus obstructing water outside the concrete from infiltrating the concrete, not impeding the interior water from discharging outwards, improving the chlorine ion penetration resistance and carbonization resistance of concrete, and improving the concrete durability.

The invention discloses an emergency covering material, and a construction method and an application thereof. The problems that an emergency site with complex site conditions is extremely difficult toconstruct, and cannot be quickly covered are solved. The emergency covering material comprises a curing agent, an adsorbent, a gelatinizing agent, a deodorizing disinfectant, a dye and a solvent. Theinvention further provides a construction method and an application of the covering material. The covering material can be used for carrying out emergency rapid covering on an emergency pollution event site, so that rapid rain and sewage diversion, toxic and harmful substance isolation and safety warning effects on the emergency event site are realized, and secondary and chain environmental hazards of the emergency event are greatly reduced. A covering layer has good rain-proof and seepage-proof effects and good peculiar smell and pollutant isolation effects, and is environmentally friendly.In addition, the covering material can also play a role in fire prevention and dust prevention when applied to fields of fire disasters, earthquakes and the like, and also has the advantages of wide application, high economic feasibility and high practicability.

The invention relates to the technical field of high-molecular polymer new materials, in particular to a poly 3,4-ethylenedioxythiophene / polyethyleneimine modified waterborne epoxy emulsion, a preparation method thereof and an anticorrosive coating. The preparation method comprises the following steps: mixing a 3,4-ethylenedioxythiophene monomer and a solvent, then adding an initiator, and carrying out a stirring reaction to prepare a poly (3,4-ethylenedioxythiophene) dispersion liquid; mixing polyethyleneimine and water-borne epoxy resin, and stirring to prepare a polyethyleneimine modified water-borne epoxy resin emulsion; and mixing the poly (3, 4-ethylenedioxythiophene) dispersion liquid, the polyethyleneimine modified waterborne epoxy resin emulsion and an auxiliary agent, and carrying out shearing emulsification. According to the PEDOT / PEI modified waterborne epoxy emulsion prepared by the preparation method, the dispersion stability of PEDOT in the waterborne epoxy emulsion is improved. The anticorrosive coating prepared from the PEDOT / PEI modified waterborne epoxy emulsion has the advantages of excellent corrosion resistance and favorable dispersion stability.

The invention belongs to the technical field of food packaging bag films, and discloses a biopolymer food packaging film. The key points of the technical solution include a chitin lining, a starch / LDPE blend layer, a PLA waterproof layer and an antibacterial coating; A process for producing the above-mentioned biopolymer food packaging film is disclosed. The main points of the technical scheme include co-extrusion composite film formation, cutting the film bubble into two layers of film with a cutting knife, and forming an antibacterial coating. Cut off the side materials on both sides, obtain the finished film and wind it up; disclose a kind of production equipment required for the above-mentioned biopolymer food packaging bag film preparation process, and the key points of the technical scheme include a three-layer co-extrusion film blowing machine and a winder , which also includes infiltration tanks, ovens and cutting rollers arranged in sequence, with a variety of biopolymer materials to synthesize degradable films, raw materials from plants, animals and microorganisms, less artificial synthetics, which is conducive to resource conservation and environmental protection The effect of building a friendly society.