52results about How to "Improve anti-corrosion and anti-bacterial ability" patented technology

The invention relates to a polysiloxane, glycidol and quaternary ammonium salt-containing multifunctional gelatin leather finishing agent and a preparation method. The preparation method comprises the following steps: dissolving gelatin in water to prepare aqueous solution with mass concentration of 2-20 percent; adding epoxy quaternary ammonium salt into a first reaction flask under the conditions of temperature of 40-70 DEG C and pH of 6-12 to obtain solution 1; adding glycidol into a second reaction flask to obtain solution 2; adding a surfactant into a third reaction flask, and meanwhile adding Si-O-Si repetitive unit-containing epoxypolysiloxane in batches or continuously to obtain solution 3; mixing the solution 1, the solution 2 and the solution 3 in different proportions, weighing 15-20 g of the mixed solution to be placed in a mold of polytetrafluoroethylene, adding 5-10 mL of one or three or four of ethanol, tetrahydrofuran, acetone and methanol and drying in a normal pressure drying oven at the temperature of 40-80 DEG C to obtain the multifunctional gelatin leather finishing agent. The finishing agent has the characteristics of strong hydrophobicity, flexible film, antibacterial property, high heat stability, organic solvent resistance, wet scrubbing resistance and the like.

The invention relates to a method for preparing aqueous ink special for cartons, which comprises the following steps: adding 100 portions by weight of water into a stirring kettle and then heating the water, adding 2 portions by weight of methanol into the water when the temperature of the water rises to 65 DEG C, then slowly adding 50 portions by weight of rosin resin into the mixture under stirring, stirring the mixture again when the temperature of the water rises to 75 to 80 DEG C, adding 6 portions by weight of ethanolamine into the mixture to be stirred, adding a mixture of 1 portion by weight of the methanol and 6 portions by weight of ammonia water into the mixture when the temperature is reduced to be below 70 DEG C, and continuously stirring the mixture to achieve the pH value of 8.5 to 9 and obtain rosin oil; mixing 100 portions of the rosin oil, 35 portions of pigment, 10 to 15 portions of emulsifying oil, 1 portion of antifoaming agent and 100 to 300 portions of water by weight portion, and then grinding the mixture into color paste; and adding 40 to 50 portions of the rosin oil, 3 portions of the emulsifying oil, 0.2 portion of the antifoaming agent, 0.5 portion of the ethanolamine, 3 portions of antimicrobial Nipagin esters and 10 to 100 portions of the water by weight portion into 100 portions by weight of the color paste, and mixing and stirring the mixture at normal temperature to obtain the aqueous ink. The preparation method has simple process; and the prepared aqueous ink has the advantages of bacteria and mildew resistance, good water resisting property, decoloring resistance and low cost, and can be widely applied to external packing cartons of food and the like.

The invention relates to a preparation method of sorbitan octoate. The preparation method includes: adding a dehydration catalyst into sorbitol for dehydration at 150-175 DEG C under nitrogen protection for a certain period of time, adding caprylic acid and an esterification catalyst, rising the temperature to 190-210 DEG C, and continuing the stirring reaction under the pressure of 4000-5000pa until the acid value and the saponification value meet the requirements; performing further molecular distillation to obtain the sorbitan octoate. The obtained sorbitan octoate is high in content and light in color, and tests prove that the sorbitan octoate is suitable for being used as the multifunctional additives of daily chemical products.

The invention belongs to the technical field of artificial plates, relates to a medium-density fiber plate, in particular to an anticorrosive and antibacterial medium-density fiber plate. The anticorrosive and antibacterial medium-density fiber plate is composed of 100% of completely-dried wood fibers, 8-12% of an adhesive, 0.25-1% of an antiseptic and antibiotic agent A, 0.25-0.5% of an antiseptic and antibiotic agent B and 1-2% of paraffin. The invention further discloses a process for manufacturing the anticorrosive and antibacterial medium-density fiber plate. The process comprises the steps of preparation of the antiseptic and antibiotic agents, material preparation, antiseptic treatment of poplar wood pieces, hot grinding, gluing, drying, hot pressing and cooling, classification andpackaging. The manufacturing process is simple, gingko wood and poplar wood serve as the wood materials, the gingko wood has a natural antiseptic effect, three substances including a boric acid, copper chelate and didecyl dimethyl ammonium chloride are selected to serve as the antiseptic and antibiotic agents, the application manners are different, the anticorrosive and antibacterial effects of the fiber plate are improved, and influences on the physical and mechanical properties of the plate are quite small.

The invention discloses a fresh keeping method for longan and relates to the technical field of fresh keeping of agricultural products. The method includes the steps of screening, disinfection, film coating, packaging and storage. In the method, sodium alginate is modified to improve antibacterial capability and sustained release performance thereof; after the longan is picked, the surface of the fruit is sterilized and then is coated with a film by means of the modified sodium alginate; finally the longan is stored under low-temperature regulation and control. By combination of the mentioned methods, fresh keeping time of longan is prolonged and quality of the longan is maintained.

The invention provides an MXene/polyaniline nano-composite anticorrosive and antibacterial coating and a preparation method thereof, and the MXene/polyaniline nano-composite anticorrosive and antibacterial coating comprises the following components in parts by weight: 40-70 parts of epoxy resin, 1-5 parts of an MXene/polyaniline composite material, 1-2 parts of a defoaming agent, 1-2 parts of a leveling agent and 10-30 parts of a curing agent. The MXene and polyaniline in the prepared coating have a synergistic effect, so that the nano composite coating not only has conductivity, but also has antibacterial property, and also provides chemical corrosion prevention and physical barrier effects. The preparation method of the nano-composite coating is simple, the anti-corrosion and antibacterial properties are good, and large-scale industrial production is easy.

The invention discloses a nylon antiseptic antibacterial type cooling coating which is composed of the following raw materials in parts by weight: 84-90 parts of nylonTR90, 1-2 parts of vinyl acetate, 3-4 parts of dicapryl phthalate, 1-2 parts of lithium silicate, 1-2 parts of disodium octaborate tetrahydrate, 1-2 parts of 2,2-dibromo-3-cyanoacetamide, 2-3 parts of dimethyl carbonate, 1-2 parts of pine tar, 0.2-0.4 part of fenbendazole, 0.1-0.2 part of dimethyl isooctyl thioglycolate tin, 2-3 parts of medical stone powder, 4-6 parts of gibbsite and 6-10 parts of modified filler. The powder coating is high in surface hardness, good in levelling property, strong in coating stability, good in weather resistance, good in antiseptic antibacterial property and long in service life and does not have contraction cavity.

The present invention provides a coffee bean automatic drying and screening device. The coffee bean automatic drying and screening device comprises a roller, and a transmission mechanism and a bracket part connected with an outer surface of the roller. A material inlet is connected with a left side of the roller, a material outlet is connected with a right side of the roller, a hot blast stove is connected with the right side of the roller via an air guide pipe, two dust removers are connected with two sides of the roller and both connected with a variable frequency fan, a screening box is arranged right below the material outlet, a dust collection box is arranged at a left side of the screening box, and a material loading box is arranged at a right side of the screening box. By using the hot blast stove to blow air into the roller, a purpose of drying coffee beans is achieved and the hot air can also carry away dust, so that air in the roller circulates, the drying of the coffee beans is accelerated and a dust concentration within the roller is also reduced. The coffee bean automatic drying and screening device ensures a smooth operation of the roller, can also conduct the automatic screening after the drying is completed, reduces labor costs and improves a use value.

The invention provides an efficient dryer facilitating fertilizer forming. The efficient dryer facilitating fertilizer forming comprises an obliquely arranged roller, a transmission mechanism connected with the outer surface of the roller and a bracket part. A feeding port is connected with the left side of the roller, a discharging port is connected with the right side of the roller, a hot blastheater is connected with the right side of the roller through a wind guide pipe, and dust removers are connected with the two sides of the roller; and the dust removers are both connected with a frequency conversion fan, a screening box is arranged over the discharging port, a dust collecting box is arranged on the left side of the screening box, and a charging box is arranged on the right side ofthe screening box. According to the efficient dryer facilitating fertilizer forming, the drying effect is good, fertilizer drying is even, dust removing can be conducted in the drying process and after drying is conducted, the fertilizer quality is obviously improved, cooling screening can be integrally achieved after drying is completed, the labor cost is reduced, and the market prospect of thedryer is promoted.

The invention provides a photocuring abrasion-resistant coating having an antibacterial performance. The photocuring abrasion-resistant coating comprises, by mass parts, 50-60 parts of oligomer, 5-6 parts of crosslinking agent, 10-15 parts of reactive diluent, 6-8 parts of photoinitiator, 0.8-1.5 parts of antifoaming agent, 1-1.5 parts of flatting agent, 1-1.2 parts of matting agent, 0.5-1 part of slip agent, 0.8-1.2 parts of wetting agent, 10-15 parts of solvent, 0.5-1 part of cellulose, 3-5 parts of abrasion-resistant additive, 3-5 parts of antibacterial agent and 0.8-1 part of preservative, wherein the oligomer is mixed solution of polysilicone emulsion and epoxy acrylate.

The invention relates to the field of cloth dyeing, in particular to a color fixing agent and a cotton cloth pad dyeing process using the color fixing agent. The color fixing agent is prepared from the following raw materials in parts by weight: 25-30 parts of dicyandiamide; 14-18 parts of ammonium chloride; 30-35 parts of diethylenetriamine; 18-24 parts of ethylene glycol; 30-35 parts of glacial acetic acid; 6-8 parts of nano chitin; and 120-130 parts of water. The cotton cloth pad dyeing process using the color fixing agent specifically includes the following process steps: S1, pretreatment; S2, dyeing; S3, washing with water; S4, finishing; and S5, shaping. The color fixing agent has the advantage of enhancing the color fixing effect.

The invention discloses an environment-friendly non-toxic metal surface treatment agent which is prepared from the following raw materials in parts by weight: 4-6 parts of alkenyl succinate, 0.1-0.2 part of tetramethyl glutaric acid, 0.8-2 parts of alpha-olefin sulfonate, 1-2 parts of sodium polycarboxylic acid, 0.6-1 part of N,N-diethylaniline, 0.2-0.3 part of tetraethylammonium tetrafluoroborate, 0.1-0.2 part of sodium diacetate, 0.7-1 part of pyrrolidone hydroxy acid sodium, 2-3 parts of diethanol amine, 4-5 parts of triethanolamine borate, 0.05-0.1 part of yttrium nitrate hexahydrate, 0.4-1 part of a silane coupling agent KH-550 and 150-200 parts of water. The metal surface treatment agent has the advantages of being non-toxic and pollution-free, good in environment-friendly property, good in anticorrosive and antibacterial properties, good in storage stability and long in service life.

The invention relates to the field of sucrose-free bread, in particular to sucrose-free bread with a long shelf life and a preparation method of the sucrose-free bread, and the sucrose-free bread is prepared from the following raw materials in parts by weight: 40-60 parts of flour, 8-15 parts of a sucrose-free sweetening agent, 10-13 parts of egg liquid, 15-18 parts of water, 0.4-0.6 part of a humectant, 0.012-0.016 part of a bread improver, 0.4-0.6 part of emulsifying paste, 0.9-1 part of yeast, 0.4-0.6 part of salt and 0.07-0.11 part of a preservative. The preservative comprises a chemical preservative, and the chemical preservative is composed of sodium dehydroacetate and calcium propionate according to the mass ratio of (0.02-0.04): (0.05-0.07). The method has the advantage of prolonging the shelf life of the 0-sucrose bread.

The invention belongs to the field of metal corrosion prevention, and particularly relates to a stainless steel anti-corrosion and antibacterial surface treatment method. According to the method, firstly, a nanopore array is prepared on the surface of stainless steel through an anodic oxidation method, and then a composite zinc coating loaded with an organic antifouling agent is prepared on the surface of the nanopore array through a constant-current polarization method. According to the invention, the binding force between the composite zinc coating and the matrix can be improved, the load capacity of the antifouling agent is increased, the microbial corrosion protection capability of the composite zinc coating is improved, and the composite zinc coating can be applied to the stainless steel surface, so that the stainless steel surface has anticorrosive and antibacterial properties.

The invention discloses a composite anticorrosive and antibacterial sustained-release thin film comprising the following raw material ingredients in parts by weight: 2-20 parts of gallic acid, 5-40 parts of an argy wormwood extract, 5-40 parts of a calamus extract and 20-88 parts of polycaprolactone. The three selected anticorrosive and antibacterial active components of gallic acid, the argy wormwood extract and the calamus extract are all natural plant extracts, and polycaprolactone has biodegradable properties. Therefore, the composite anticorrosive and antibacterial sustained-release thinfilm can be gradually degraded in the environment after use, can be absorbed or decomposed by the environment, has no material residue, has no post-treatment problem, and cannot pollute the surrounding environment. The method of hot pressing, 3D printing or melting blow moulding is green and environmentally friendly. The process is simple and reliable, no organic solvents or other additives are added in use, and no environmental pollution or other problems exist.

The invention belongs to the technical field of building materials, and particularly relates to an anticorrosion and antibacterial tile seam filling and a preparation method thereof. The tile seam filling comprises, by weight, 42-67 parts of coal gangue, 32-40 parts of limestone, 15-28 parts of low-melting-point glass powder, 6-15 parts of nano-titanium dioxide, 5-15 parts of inorganic fillers, 2-7 parts of mildew-proof agents, 22-25 parts of composite adhesives and 80-110 parts of water. According to the tile seam filling, the coal gangue is modified through the low-melting-point glass powder, compactness of the coal gangue is improved when the coal gangue serves as a component of the tile seam filling, surface roughness of the coal gangue is reduced, tile seams filled with the filling are easily cleaned, smudginess is not easily concentrated, water absorption of the tile seam filling and nutrient enrichment are prevented, breeding places of bacterial microorganisms are avoided, and good anticorrosion and antibacterial capability of the tile seam filling is ensured.

The invention relates to a preparation method of a disposable antibacterial paper bowl. The preparation method of the disposable antibacterial paper bowl comprises the following steps of soaking raw fiber in sodium hydroxide solution into mixed fiber powder; mixing and pounding Chinese herb residues, and then boiling the pounded residues in ethanol solution into paste obtain a herb residue paste;uniformly mixing coagulated polysaccharides, sodium alginate and methylcellulose with water, keeping temperature in water bath to obtain a mixed adhesive; preparing and mixing chitosan solution and polyvinyl alcohol solution of a certain concentration, then adding in lactic streptococci nicin to obtain an antibacterial oil-proofing agent; uniformly mixing the mixed fiber powder, the herb residue paste and the mixed adhesive, and then hot-pressing the mixture into a bowl body; uniformly applying the antibacterial oil-proofing agent onto the inner surface of the bowl body, and performing dryingand cooling treatment to obtain the disposable antibacterial paper bowl. According to the preparation method of the disposable antibacterial paper bowl, the waste Chinese herb residues serve as the raw materials to produce the disposable antibacterial paper bowl to achieve high economic and ecological benefits; the prepared disposable antibacterial paper bowl is environmentally friendly and degradable and achieves excellent anti-oil and antibacterial performance.

The invention discloses a natural biological fresh-keeping agent and a preparation method thereof, and relates to the technical field of fresh-keeping agents. The biological fresh-keeping agent is prepared from, by weight, 2-8 parts of Chinese bulbous onion, 4-10 parts of tea leaves, 5-9 parts of eutrema yunnanense, 3-7 parts of trichosanthes kirilowii maxim, 2-8 parts of rhizoma atractylodis macrocephalae, 4-10 parts of radix angelicae, 2-8 parts of gallnut, 0.5-3.5 parts of rosemary essential oil, 6-12 parts of wheat bran, 1-4 parts of glycerinum, 0.5-2.5 parts of tartaric acid, 10-20 partsof pullulan polysaccharide, 0.5-2.5 parts of Arabic gum, 0.2-2 parts of edible salt, 0.5-2.5 parts of calcium chloride, 0.5-3 parts of coconut oil glyceride and 60-100 parts of distilled water. Various components excellent in bacterium restraining and sterilizing effect are combined, antioxidants, film forming agents and the like are added for achieving a mutual synergistic effect, the effect of the fresh-keeping agent is improved, and the fresh-keeping time of the fresh-keeping agent for fruits and vegetables is prolonged. The fresh-keeping agent is prepared by adopting natural plant components according to a proportion and is free of toxicity and harm.