330results about How to "Increase water permeability and breathability" patented technology

The invention discloses a bio-medical adhesive, which can be cross-linked with a wound in situ, and a preparation method of the bio-medical adhesive. The preparation method is characterized by comprising the steps of first, preparing oxidized sodium alginate by using sodium periodate to oxidize sodium alginate; dissolving the oxidized sodium alginate in an MES (Methyl Ester Sulfonate) buffer solution, dissolving 1-(3-dimethyl aminopropyl)-3-ethyl carbodiimide hydrochloride and N-hydroxyl succinimide in the MES buffer solution as well under nitrogen protection, continuously adding dopamine, carrying out dialyzing and freeze-drying after reacting for 8 to 24 hours, and obtaining A liquid by dissolving a reaction product in a PBS (Phosphate Buffer Solution) or a sodium borate solution; then, dissolving I-shaped collagen in an acid solution, and obtaining B liquid by neutralizing the solution pH (potential of Hydrogen) to be 5 to 8; firstly pre-treating the wound by using hydrogen peroxide or HRP (Horse Radish Peroxidase) before the bio-medical adhesive is used, then immediately coating the wound with the bio-medical adhesive after mixing the A liquid with the B liquid, and forming gel in 30 to 120 s, wherein the gel is firmly adhered to the surface of the wound. The bio-medical adhesive disclosed by the invention has a stronger adhesive force under a moist environment in vivo, integrates filling, sealing and bleeding stopping functions, is good in biocompatibility, is bio-degradable and can be used for promoting wound healing.

Provided are filter media for liquid filters and a method of manufacturing the same, in which a thin filter layer is formed and the content of nanofibers weighs light, by laminating a low weight nanofiber web on a porous nonwoven fabric, and thus a less differential pressure is applied before and after filtering, to thereby increase a pass flow rate. The filter medium includes: a porous support that plays a strength support role; and a nanofiber web that is laminated on one side of the porous support and is made of nanofibers of a polymer material, in which the nanofiber web comprises fine pores of a three-dimensional structure, through which a liquid to be treated passes, wherein content of the nanofibers is less than 5 gsm.

The invention relates to a novel environment-friendly water-based plastic track, which comprises three layers of structures such as a base surface layer, a plastic elastic layer and an antiskid surface layer, wherein the base surface layer is provided with a concrete or asphalt structure; the plastic elastic layer is formed by fully stirring cement, a water-based polymer emulsion, black waste rubber particles of which the particle size is 3 mm, water and an aid, paving the mixture on the base surface layer and solidifying the mixture at the normal temperature of -50 DEG C, and reaches the required thickness; and the antiskid surface layer is formed by fully stirring white cement, a water-based polymer emulsion, water, pigment and an aid to obtain a slurry, paving the slurry on the plastic elastic layer, spraying 30 to 40 mass parts of colorized EPDM particles of which the particle size is 2 to 4 mm, and performing solidification under the condition that the temperature is between the normal temperature and 50 DEG C. The novel environment-friendly water-based plastic track adopts building water-based polymer emulsion modified cement as a binding agent, is nontoxic and environment-friendly, can be used for construction in a moist environment with water, has a low cost, is simple and convenient to operate, is ventilate and hydro-ceramic, has high physical properties, and does not drop particles, and all properties of the novel environment-friendly water-based plastic track reach national standards.

The invention discloses a hydrogel dressing capable of promoting wound healing and a preparation method thereof. The hydrogel dressing consists of: by mass, 25-35% of glycerin, 0.1-0.5% of sodium hyaluronate, 5-10% of a skeletal material, 0.1-0.2% of tartrate, 0.01-0.2% of disodium ethylene diamine tetraacetate, 0.1-0.2% of ethylparaben, 0.1-0.4% of a cross-linking agent, 0.5-1.5% of a filler, 0.01-0.1% of an essential component and 60-65% of deionized water. Due to the interaction between an oil phase and a water phase, a compact net structure is formed and water and the essential component are held in a gel, and after solidification and sterilization, the hydrogel dressing capable of promoting wound healing is prepared. The dressing is applicable to postoperative wound nursing of surgery and gynaecology and obstetrics, and helps to make the surface of the wound keep moist, effectively promote wound healing and inhibit scar hyperplasia.

The invention provides a multiple-effect super absorbent resin fertilizer. In the manufacturing process, sodium hydrogen sulfite and ammonium persulfate oxidation-reduction type initiator are used as foundations, and ultraviolet initiation is used as an auxiliary means; N-N'-methylene bisacrylamide is used as a crosslinking foundation, and ethylene glycol diglycidyl ether and glycerol are used as auxiliary means; hydroxyethyl acrylate is added in the polymerized monomer, so that the colloid strength of the high molecular polymer is obviously improved; antioxidant, ultraviolet absorbent and light stabilizer are creatively introduced, thus finally manufacturing super absorbent resin having oxidation resistance, light resistance and degradation resistance; the super absorbent resin is organically combined with humic acid, microbial inoculant and an inorganic fertilizer to perform synergistic action, so that the various effective elements achieve the optimal use effect. Meanwhile, the consumption of the inorganic fertilizer is reduced, the salt content of soil is reduced, the pH value of the soil is improved, the soil environment is improved, and soil hardening is prevented, thus greatly increasing the utilization ratio of nitrogen fertilizers, phosphate fertilizers and potassium fertilizers, and achieving comprehensive effects of water saving, fertilizer saving, yield increase and outcome increase.

The aquogel type thiamazole plaster includes a back lining layer, a medicine matrix layer and a protecting film. The medicine matrix layer contains medicine thiamazole in 0.2-20 wt% of the medicine matrix layer, aquogel type contact adhesive material, cross-linking agent, pH regulator, humectant, tackifier medicine, transdermal promoter and water, . The present invention has high transdermal effect of medicine, good skin compatibility, high air and moisture permeability, lowered toxicity and side effect of medicine and other advantages, and is used for treating hyperthyroidism.

The invention discloses PVC/PE/PVCD solid medicine using composite hard sheet manufacturing technology. It includes the following steps: unreeling for PVC basis material; corona treatment for its surface; coating adhesive; drying; unreeling for PE film; compositing the PVE basis material and PE film; solidifying; dying; corona treatment for the PE film surface; coating adhesive; coating PVCD glue; drying to form PVCD film; repeating coating the PVCD glue on the PE film; drying; rolling, solidifying to form PVCD film again; patting cut and detecting.

A cold storage method without boiling for reeling silk includes cold storage of fresh cocoon, loading in netted basket, putting in vacuum tank, vacuumizing, hot water osmosis, discharging water and repeating relative steps. Its advantages are high efficiency and high quality.

The invention discloses a saline alkali soil conditioning agent. The saline alkali soil conditioning agent comprises, by weight, 9 parts of biological charcoal, 45 parts of calcined phosphogypsum, 20parts of honeycomb briquette ash, 7 parts of modified zeolite, 6.5 parts of expanded perlite, 5.5 parts of humic acid powder, 4 parts of citric acid residue, 3 parts of polysilicate aluminum ferric, 3parts of diatomite, 1 part of a calcium activator, 0.4 part of a composite biological inocula, and 5 parts of an organic composite fertilizer. The saline alkali soil conditioning agent is capable ofimproving saline alkali soil physical and chemical properties effectively, improving time is short, and effect is achieved quickly.

The invention belongs to the technical field of epoxy resin preparation and discloses an epoxy resin seepy material and a preparation method thereof and application. The epoxy resin seepy material is prepared from, by weight percentage, 5-35% of epoxy resin, 5-30% of modified self-emulsifying epoxy hardener, 0.5-3% of polyether polyamine, 0.5-3.5% of epoxy resin accelerator, 1-3.5% of epoxy resin diluent, 35-10% of water and 53-15% of inorganic filler. The modified self-emulsifying epoxy hardener is ricinoleic acid and/or fatty polyamine and/or alicyclic polyamine modified by a polymer of the ricinoleic acid. The epoxy resin seepy material has excellent seepy and breathable performances, the pore diameter of the epoxy resin seepy material is smaller than 20 [mu]m, the porosity is larger than 20%, the water absorption rate is larger than 20%, the pore diameter distribution is uniform, the surface is bright and clean, and the epoxy resin seepy material can be used for manufacturing ceramic industry slip casting dies, filter materials and air purification materials.

The invention discloses a culturing method for orchid. Through hardening tissue culture vessel seedlings in a seedling-hardening substrate, and middle and big seedlings are obtained through one or more years of culturing and then planted into a culture medium to be cultured, so that adult seedlings of the orchid are obtained. The culturing method and the substrate have the advantages of good water retention, fertilizer maintenance and moisture preservation; cleanness is achieved in the using process, harmful bacteria are not prone to being generated, good growth of the seedlings is guaranteed, and the growth of the orchid is facilitated; the substrate is made of agricultural waste, is ecological and environmentally friendly and saves the cost. The substrate increases the survival rate of hardened tissue culture seedlings of the orchid, the transplanting survival rate reaches 95% or above, growth speed is high, and the seedlings start to take root and come into leaves about 30 days after transplanting. The growth of the middle and big seedlings is promoted, the uniformity of the seedlings is improved, blooming is advanced, potting quality is excellent, and the production cost is lowered. The culturing method has the advantages that the production period is short, the production cost is low, air permeability and water permeability are good, and collecting and transporting are facilitated; the agricultural waste is effectively utilized for reducing deforestation, and therefore the environment is protected.

The invention relates to a method for ecologically restoring pits. The method is used for vegetation restoration by adopting a combination method of foreign soil greening and palisades spray seeding on slope toe platforms, improves the crumble structure and the smell of sludge, reduces the quantity of pathogenic bacteria and parasitic ova, and improves the available contents of nutrient indexes comprising N, P, K and the like by utilizing the organic fertilizer features of urban sludge per se, medicine dregs, agricultural wastes and the like through fertilizer composting so that the fertilizers are more beneficial to plant adsorption. The method ensures that a great amount of urban sludge is effectively handled, can be also used for improving the pits having no soil substrates for vegetation growth into soil suitable for reclamation, and is a good method which has the advantages of low improving cost, waste reclamation, simple and easy enforcement and effectiveness and can create huge environmental benefits, economic benefits and social benefits.

The invention belongs to the field of photovoltaic agriculture and medicinal herb plantation and relates to a method for bag-cultivating radix tetrastigme medicinal herbs under solar photovoltaic panels without greenhouses or tillage. On the basis of the characteristics that radix tetrastigme loves shade and is resistant to drought and cold, specially-made cultivation bags and cultivation mediums special for radix tetrastigme are adopted, and medicinal root tubers of radix tetrastigme are planted without greenhouses or tillage in shady and cool space under the solar photovoltaic panels. The radix tetrastigme medicinal herbs with high added value are bag-cultivated under the solar photovoltaic panels, greenhouses do not need to be set up, tillage is avoided, labor is saved for daily farming management, digging can be performed easily, and the root tubers of radix tetrastigme cannot be damaged; not only is the problem that greenhouse construction and tillage are not suitable for a ground centralized photovoltaic power station solved, but also continuous crop rotation and improvement of the ecological environment of a photovoltaic power generation site can be achieved; the comprehensive utilization rate of photovoltaic power generation project land is greatly increased, sunlight and land resources can be utilized stereoscopically and efficiently, dual good benefits can be obtained from photovoltaic power generation and medicinal herb plantation, and an ideal photovoltaic agriculture plantation mode is achieved.

The invention relates to a four-layer coaxial fiber wound dressing and a preparation method thereof and belongs to the field of biological materials. The material is prepared by adopting a synthetic polymer with biocompatibility and a natural polymer as main raw materials and using a four-layer coaxial needle through an electrostatic spinning method. The fiber has a four-layer coaxial structure, various layers of matrixes load different drugs according to the wound healing mechanism, and the release sequence of the drug can correspond to the wound healing process. The material has excellent biocompatibility and can release the drug in a manner of fitting with the wound healing mechanism.

The invention provides a virus-free basic potato seed production technology comprising the following three steps of seedbed treatment, cutting and management. The technology is characterized in that washed river sand is employed as the seedbed base, the management is carried out according to a certain method, and the formula of used nutrient solution is that 0.24 grams of N, 0.2 grams of P2O5 and0.48 grams of K2O are added in each liter of water and 0.6 grams of N, 0.6 grams of P2O5 and 0.6 grams of K2O are added in each liter of water. By adopting this technology, the yield of virus-free basic potato seeds per unit area is high, and the virus-free basic potato seeds are large in size, with 68% greater than 3 grams. As a technology for planting seeds for production, the technology of theinvention is low in requirement and high in survival rate.

The invention discloses a bacterial cellulose/fabric laminated composite material and a preparation method thereof. The preparation method comprises the following steps: (1) inoculating acetobacter xylinum into a fluid medium for enlarged cultivation; (2) appropriately cutting a fabric and treating with low-temperature oxygen plasmas or aqueous alkali, or through ultraviolet light surface grafting; and sterilizing and then drying the fabric; (3) arranging the medium containing floccules into a culture dish, spreading the treated fabric on bacterium solution, adding the medium containing floccules into the fabric, and arranging in a biochemical incubator until the laminated composite material is formed; and (4) soaking the composite material with deionized water at normal temperature, soaking the composite material with sodium hydroxide solution for two days, and soaking the composite material with deionized water until the composite material is neutral. The composite material is formed at a time, the appetency of the single fabric and the texture is improved, and the water retainability and the transdermal absorption ratio of the fabric are improved; meanwhile, the operation is convenient and simple and the using efficacy is greatly improved.

The invention relates to foamed micropore glass pumice for soil improvement. The foamed micropore glass pumice is characterized by containing foamed micropores, wherein the pore sizes of the foamed micropores are 2-3 mm, the water absorption of the foamed micropores is 30-50%, the strength of the foamed micropores is 2-4 MPa, and the density of the foamed micropores is 0.2-0.3 g/cm<3>; and the foamed micropore glass pumice is prepared through sintering a foamed mixture which comprises the following ingredients in percentage by weight: 85-90% of glass powder, 3-8% of marble powder, 2-5% of silica powder and 2-5% of gypsum powder, wherein the fineness of the glass powder is 40-100 microns, the fineness of the marble powder is 20-40 microns, the fineness of the silica powder is 20-40 microns, and the fineness of the gypsum powder is 20-40 microns. The invention further relates a preparation method of the foamed micropore glass pumice for soil improvement. The foamed micropore glass pumice has the advantages that the hardening of soil can be improved, the water permeability and air permeability of the soil can be improved, and the breeding of pests and diseases can be reduced.