300results about How to "Good antibacterial and antifungal effect" patented technology

The invention relates to a paint technology, an environment-friendly technology and an antibacterial mould-proof technology, in particular to high-efficiency environment-friendly antibacterial mould-proof inorganic composite nano paint and a preparation method thereof. The high-efficiency environment-friendly antibacterial mould-proof inorganic composite nano paint comprises the following components in percentage by weight: 0.5 to 5 percent of wetting dispersant, 0.01 to 20 percent of inorganic composite nano antibacterial agent concentrated pulp, 0.5 to 10 percent of hydrophobing agent, 0.5 to 10 percent of anionic powder, 0.5 to 8 percent of film-forming aid, 0.1 to 2 percent of anti-settling agent, 0.8 to 10 percent of antifreezing agent, 0.1 to 3 percent of defoaming agent, 4 to 30 percent of pigment, 0 to 30 percent of filler, 15 to 45 percent of emulsion, 0.1 to 4 percent of thickening agent, 0.1 to 3 percent of flatting agent, 0 to 3 percent of pH regulator and 0.5 to 45 percent of water. The high-efficiency environment-friendly antibacterial mould-proof inorganic composite nano paint is mainly prepared by adding the inorganic composite nano antibacterial agent into the basic materials, so that the paint has the coating characteristic of high performance, is low is cost, and has a function of purifying air, can eliminate harmful gas volatile organic compounds (VOC), formaldehyde and the like and also has a durable and high-efficiency antibacterial mould-proof function, so that the sterilizing rate within 6 hours reaches 100 percent and the mould-proof grade reaches the first grade. By the high-efficiency environment-friendly antibacterial mould-proof inorganic composite nano paint and the preparation method thereof, self-cleaning performance, hydrophobicity, scrubbing resistance, dirt resistance and weather resistance of the coating are improved; and the high-efficiency and durable antibacterial and mould-proof effect is achieved.

The invention relates to a natural antibacterial mould proofing detergent without petrochemical components. The detergent which is produced by organically combining petrochemical component-free natural plant extract, petrochemical component-free natural mineral extract and existing products processed by modern biological technologies has high safety to human bodies and the environment, is environment-friendly, is capable of efficiently resisting bacteria and mildew, has strong broad-spectrum antibacterial and mould proofing performances, especially has excellent antibacterial performance for drug resistant germs, can remove heavy metals such as lead, and AOX (adsorbable organic halide) attached to clothes and skin, and has good vegetal washing effect especially for the fabric dyed with natural dyes, and the fabric dyed with natural dyes does not fade or change color after being washed with the detergent. The natural antibacterial mould proofing detergent does not contain oxidant or fluorescent brightener, is nonirritant to the skin, is applicable to washing the fabric and clothes of children, can be used for washing tableware and vegetables, can be used as liquid soap, liquid shampoo, bath foam and the like, is environment-friendly, safe and hygienical, and is a multifunctional washing product.

The invention provides a method for preparing an enamel surface glaze. The method comprises the following steps of: (a) mixing the following raw materials in percentage by weight: 10-20 percent of Na2O, 8-25 percent of B2O3, 35-55 percent of SiO2, 15-25 percent of TiO2, 1-5 percent of CaF2, 0-3 percent of MgO, 0.05-2 percent of CuO, 0.5-4 percent of P2O5, 0-5 percent of CaO, and 1-6 percent of Al2O3, melting at 1200-1300 DEG C and quenching in water to be fusion cakes with the diameter of 1-3 mm; and (b) grinding the nano ZnO with the prepared fusion cakes, a suspending agent, an electrolyte and water in a milling addition mode into the surface glaze. The enamel surface glaze provided by the invention is doped with CuO and added with ZnO in a milling way, and the coating of the prepared enamel has favorable bacterium and mildew resistance, white color and stable luster.

Zinc pyrithione and copper pyrithione are highly evaluated in the market as an antidandruff agent for shampoo, or an antifouling agent for ship bottom paint and fish-farming net, or an antibacterial/antifungal agent or preservative/mildewcide for industrial products and household articles. For enhancing the market value thereof, there has been a demand for a product that not only attains an increase in conventional antibacterial/antifungal effects but also exhibits novel bioactive effects and that achieves improvement with respect to problems and drawbacks relating to properties, such as solubility in seawater, and stability, such as thermal stability and weather resistance, of polymer materials. There is provided a novel pyrithione complex compound obtained by converting the conventional pyrithione metal salt to a complex compound with an oxide or hydroxide of metal such as zinc, copper or aluminum. As compared with the conventional pyrithione metal salt, this complex compound exhibits superior antibacterial/antifungal effects, newly realizes a hair-regrowing effect and successfully attains improvement with respect to the solubility in seawater and thermal stability/weather resistance of polymer materials.

The invention provides a bio-based environmental protection packaging bag and a preparation method thereof, wherein the packaging bag comprises, by weight, 20-40 parts of corn starch, 50-70 parts of PBAT, 10-20 parts of PLA, 5-10 parts of glycerin, 0.1-1 part of maleic anhydride, 1-5 parts of an ethylene-vinyl acetate copolymer, 0.1-1 part of an opening agent, 1-3 parts of an antibacterial agent,1-3 parts of talc powder, 1-3 parts of calcium carbonate, and 0.1-1 part of a chain extender. The preparation method comprises: raw material pretreatment, raw material mixing, extrusion granulation, granule mixing, extrusion film-blowing, and winding to prepare the packaging bag. According to the present invention, by using starch, PBAT and PLA as the raw materials, the degradation performance ofthe packaging bag is improved, the packaging bag is environmentally friendly, the cost is reduced, the consumption of petroleum-based resources is reduced, the antibacterial and antifungal propertiesof the packaging bag are improved, the safety of food is ensured, and the product has advantages of high strength, water resistance, oil resistance and durability during the use; and the packaging bagis prepared through blowing film forming by the blowing machine, such that the specification is controllable, the application range is wide, and the method is suitable for large-scale industrial production and promotion.

The invention belongs to the field of plastic tubular product, and more specifically relates to an antibacterial wear-resistant plastic tubular product, and a preparation method thereof. The antibacterial wear-resistant plastic tubular product is prepared from, by weight, 100 to 150 parts of high density polyethylene, 10 to 30 parts of acetylated monoglyceride, 10 to 30 parts of coumarone resin, 5to 10 parts of anti-oxidant 1010, 20 to 40 parts of hollow glass bead, 10 to 15 parts of nanometer silver, 1 to 6 parts of chlorinated polyethylene, 3 to 7 parts of high resistant carbon black, 5 to8 parts of silane coupling agent, 5 to 10 parts of nanometer titanium dioxide, 3 to 6 parts of zinc oxide, 10 to 15 parts of acrylic resin, and 15 to 20 parts of an auxiliary agent. The antibacterialwear-resistant plastic tubular product possesses excellent heat resistance, wear resistance, antibacterial performance, and mildew resistance. The mechanical strength of the antibacterial wear-resistant plastic tubular product is not influenced by the antibacterial performance and mildew resistance, wear resistance is excellent, service life is long, and market application prospect and economic benefit are excellent.

The invention belongs to the field of preparation of polypropylene non-woven fabrics, and relates to an antibacterial mildewproof polypropylene non-woven fabric and a preparation method thereof. The antibacterial mildewproof polypropylene non-woven fabric comprises polypropylene, a guanidine salt composite antibacterial agent, a mildewproof agent and other auxiliaries; the guanidine salt compositeantibacterial agent is prepared from, by weight, 100 parts of a guanidine salt polymer, 0.01-40 parts of zinc salt and/or copper salt, 0.1-10 parts of an anti-migration agent, 0.5-100 parts of nano-sized powder rubber and 0.1-10 parts of a dispersing agent. The non-woven fabric has good antibacterial and mildewproof performance, a long-lasting effect and good water resistance.

The invention relates to a polymer/Ag doped nanometer ZnO long-acting antibacterial and mildew-proof finishing agent for a cotton fabric and a preparation method of the finishing agent. The existing antibacterial material for the cotton fabric is low in antibacterial performance, great in one-time dissolution, and not lasting in the antibacterial and mildew-proof performance. Ag doped nanometer ZnO is prepared by using zinc acetate and silver nitrate as precursors by a coprecipitation method; the polymer/Ag doped nanometer ZnO long-acting antibacterial and mildew-proof finishing agent is prepared by using Ag doped ZnO, allyl glycidyl ether and dimethyl diallyl ammonium chloride as raw materials via an in-situ polymerization method. The antibacterial and mildew-proof finishing agent is applied to the afterfinish of the cotton fabric; the Ag doped ZnO in the composite material and N+ in the dimethyl diallyl ammonium chloride can jointly resist bacteria to achieve the efficient antibacterial and mildew-proof performance; the hydroxyl of the cotton fabric surface can be crosslinked with the epoxy group in the polymer; the long-acting antibacterial and mildew-proof performance of the cotton fabric is improved; meanwhile, the injury to the human body caused by one-time dissolution of the nanometer antibacterial material used by the fabric is reduced.

The invention discloses an antibacterial and mildew-proof ceramic artware and a preparation method thereof. The antibacterial and mildew-proof ceramic artware comprises a ceramic green body and a glaze layer coating the outer surface of the ceramic green body, wherein the ceramic green body is prepared from the following raw materials in parts by weight: ceramic waste, a quartz material, kaolin, dolomite clay, a fluxing agent, nano calcium carbonate powder and an adhesive; the glaze layer is prepared from the following raw materials in parts by weight: kaolin, albite, a dispersing agent, an antibacterial complexing agent, a mildew preventive and carboxymethyl cellulose. The antibacterial and mildew-proof ceramic artware is prepared from the raw materials of the ceramic body and the glaze;the raw materials are reasonably matched, the content of the raw materials is optimized and the proper proportion is selected, so that the raw materials are brought into full play, the raw materials supplement each other and promote each other, and the prepared ceramic artware has excellent antibacterial and mildew-proof effects. The ceramic artware can effectively kill various bacteria, reduces harm to human health and is high in safety.

The invention relates to a finishing technology of a nano-silver antimicrobial textile. The finishing technology comprises the work procedures of finishing a gray fabric of a semi-finished textile, softening for shaping and drying for shaping. The finishing technology is characterized in that during the work procedure of softening for shaping, the gray fabric is completely soaked in a nano-silver ion material liquid for 1-120 minutes and then is taken out, washed by water and dried in air to obtain the nano-silver antimicrobial textile, wherein the nano-silver ion material liquid is obtained by means of mixing 0.01%-5% by weight of an amino-terminated hyperbranched polymer, an aqueous solution of quaternary ammonium salt of the amino-terminated hyperbranched polymer, and a silver nitrate solution with molality of 0.01-0.5 mol/L. The textile, produced by the finishing technology adopting a manner of completely soaking the gray fabric of the textile in the nano-silver ion material liquid in the softening for shaping of the gray fabric and then drying the gray fabric, has remarkable antibacterial and mildew-proof effects and lasting functions, has health-care functions such as removal of undesirable odor, and can endure multiple times of water washing and repeated dry-cleaning.

The invention relates to the field of plastic anti-bacteria and particularly provides anti-bacterial polypropylene plastic and a preparation method thereof. The method comprises steps as follows: (1), in the presence of an aqueous solvent, poly guanidine salts and sodium 2-mercaptopyridine N-oxide are mixed and contacted, solid substances are obtained, dried and smashed, and an anti-bacterial agent is obtained, wherein the poly guanidine salts comprise polyhexamethylene guanidine salt and polyhexamethylene biguanidine salt; (2), polypropylene, the anti-bacterial agent, an optional antioxidant, an optional dispersing agent and an optional compatilizer are subjected to melt blending, extrusion pelletizing, drying and injection molding. The preparation method is simple and easy, and the anti-bacterial plastic has good anti-bacterial and anti-mold effects, is high in water resistance and has bright application prospect.

The invention discloses a nano-copper antibacterial plastic masterbatch and a preparation method thereof. The antibacterial plastic masterbatch is prepared from the following components in parts by weight: 1-10 parts of an antioxidant, 1-20 parts of liquid paraffin, 1-30 parts of a nano-copper antibacterial agent and 40-90 parts of a plastic body. The preparation method comprises the following steps: raw material pretreatment, mixing, extruding and pelletizing. The antibacterial plastic masterbatch disclosed by the invention has the advantages of simple production process, high universality, good machinability and the like; continuous large-scale production can be achieved; the plastic product obtained by the plastic processing manners such as injection molding and extruding has a good antibacterial effect; and the mechanical property of the plastic product is not affected by addition of the antibacterial masterbatch.

The invention discloses a thermal insulation coating for building external walls. The thermal insulation coating is prepared from the following raw materials in parts by weight: 50-60 parts of modified polyurethane, 30-36 parts of modified composite aerogel, 8-12 parts of floating beads, 1.5-2 parts of rutile titanium dioxide, 1.5-2 parts of silicon carbide, 2-3 parts of mirabilite and 0.6-1 partof an auxiliary agent. The invention also discloses a preparation method of the coating. By adding the composite aerogel, the microporosity in the coating can be greatly improved, and the heat conduction path can be prolonged; besides, the rutile type titanium dioxide and the silicon carbide capable of reflecting radiant heat are introduced to block a propagation path of radiant heat conduction, and a phase change energy storage material mirabilite is introduced, so that the overall performance of the thermal insulation coating can be effectively improved in the coating; by starting from threepaths (conduction, radiation and convection) of heat transfer, the coating has excellent heat preservation and insulation performance; the film-forming substance can endow the paint with favorable antibacterial, mildew-proof and waterproof properties, and the obtained thermal insulation coating is suitable for building exterior walls.

The invention provides mould-proof antibacterial decorative paper and a preparation method thereof. Part of paraffin is added into base paper, and as the paraffin has a good waterproof effect, moisture is effectively prevented from permeating in the base paper in a humid environment; furthermore, in the preparation of an ink layer on the surface of the base body, by controlling the drying speed by stages, part of the paraffin in the base paper melts and permeates into the ink layer while ink permeates into the fiber of the base paper in a 150-160 DEG C drying tunnel; by combined action of the charge force of other substances, mixed liquor containing nano fibers is sprayed onto the surface of the ink layer, and in the further drying process, the nano fiber can tightly adhere to a mixed layer formed by the ink layer and the paraffin; therefore, the decorative paper has good hydrophobic, humidity resistant, sterilizing and mould proof effects.

The invention discloses a fluoride-free waterproof finishing agent and preparation and application methods thereof, and relates to the technical field of fabric finishing. According to the technical scheme, the fluoride-free waterproof finishing agent is characterized by being prepared from, by weight, 2-4 parts of a fluoride-free water repellency agent, 0.1-0.3 part of a cross-linking agent, 1-2parts of a penetrating agent, 1-2 parts of a defoaming agent and 45-55 parts of water; the fluoride-free water repellency agent comprises fatty alcohol polyoxyethylene ether. According to the fluoride-free waterproof finishing agent, the characteristic of low-surface performance of the fluoride-free water repellency agent is utilized, excellent water repellency performance is achieved, the fluoride-free waterproof finishing agent prepared through cooperation of the fluoride-free water repellency agent, the cross-linking agent, the penetrating agent and the defoaming agent can be quickly spreadout to form a film on the fiber surface, the friction coefficient of the fiber surface is effectively reduced, and the waterproof performance of fiber fabrics is improved.

The invention discloses an anti-microbial TPU material and a preparing method thereof. The anti-microbial TPU material comprises raw materials including, by weight, 1-15 parts of polyether polyol, 15-55 parts of isocyanate, 3-25 parts of a chain extender, 10-35 parts of polyamide, 0.5-6 parts of an anti-microbial agent, 5-40 parts of polyethylene glycol, 0.1-5 parts of a mildew preventive, 0.05-4 parts of an antioxidant, 1-15 parts of organic bismuth, 0.1-8 parts of an antiblocking agent and 0.1-20 parts of a filler. The above raw materials are weighed according to the parts by weight and are evenly mixed; and an obtained mixture is dried, and extrusion is carried out in a casting machine to obtain the anti-microbial TPU material. The anti-microbial TPU material has the technical advantages of high abrasive resistance, good elastic toughness, high hydrolytic resistance, high hardness, high yellowing resistance, high transparency, high tearing strength and the like; the anti-microbial agent, the mildew preventive, the antioxidant and the antiblocking agent are added, and therefore the anti-microbial TPU material has the beneficial effect of being high in anti-microbial and mildew-preventing performance, and wide application of the TPU material in the field with high anti-microbial requirements is promoted; and the anti-microbial TPU material and the preparing method have the wide market prospect.

The invention discloses an interior wall antibacterial and mildew-resistant functional coating which contains the following ingredients, by weight, 18-40 parts of antibacterial powder, 10-20 parts of a mildew preventive, 10-20 parts of a preservative, 1.2-3.6 parts of hydroxyethyl cellulose, 100-500 parts of deionized water, 0.2-0.8 part of a water treatment agent, 0.5-1.5 parts of a pH regulator, 2.8-5 parts of a wetting agent, 3.6-10 parts of a dispersant, 448-668 parts of a colouring agent, 1-2 parts of an antifoaming agent, 70-230 parts of a modifier, 6-9.4 parts of a filling material, 110-277 parts of an emulsion, 12.8-22 parts of a film forming agent, 12-60 parts of an antifreezing agent, 30-90 parts of a thickening agent, 60-200 parts of Huizhu and 1-10 parts of superfine cellulose. The interior wall antibacterial and mildew-resistant functional coating has excellent antibacterial effect and long antibacterial and mildew-resistant time and can be used to remarkably improve indoor environment and raise air quality. In addition, the coating is harmless to human body, has no peculiar smell, has good mechanical property and decoration property, and is a highly-efficient environmental-production functional interior wall coating.