61results about How to "Good three-defense effect" patented technology

The invention provides a preparation technology of a water, oil and pollution resistant texture fabric. The preparation technology is characterized in that pretreatment or dyeing and dip padding fixing finishing of a base cloth is carried out, and the dip padding fixing finishing is carried out in a nanometer finishing liquid comprising a fluorine-containing finishing agent used for water, oil and pollution resistant finishing and a nanometer ceramic powder dispersion liquid. The preparation technology enables the fabric to have very good nanometer water, oil and pollution resistant functions, still have very good water, oil and pollution resistance effects after multi-time water washing, have a high color fastness and a good air and water vapor permeability and have a non-obviously decreased breaking strength after finishing.

The invention discloses a novel insulating paint for electrical parts and a preparation method thereof. The insulating paint comprises the following components in percentage by weight: 66% of epoxy modified silicone resin, 22% of acrylic resin, 2.5% of pigment, 8% of mica powder packing, and 1.5% of additive. The preparation method comprises the following steps: a) preparing the epoxy modified silicone resin; b) preparing the acrylic resin; and c) preparing the insulating paint. The invention discloses a novel insulating paint for electrical parts and a preparation method thereof, the novel insulating paint can be naturally dried at normal temperature, is high-temperature-resistant, oil-resistant, and good in adhesive force, and has excellent electrical insulation properties and three-proofing properties, and the preparation method is simple, high in performance price ratio, and easily subjected to large-scale popularization and application.

The invention discloses a high-performance three-proofing antibiotic fabric and finishing method thereof. The high-performance three-proofing antibiotic fabric is obtained by one-bath finishing cotton woven by using a compound three-proofing antibiotic finishing agent composed of a nano-silver sol antibiotic finishing agent, an HS1100 three-proofing finishing agent, an ATB9800 antibiotic finishing agent and a TPM9007antibactrial finishing agent. Starch which is a natural degradable polymer is used as a protective agent and a dispersing agent, and a simple liquid-phase chemical reduction method is used for preparing starch cladded nano-silver sol, the process is simple and environment-friendly, the nano-silver sol is good in dispersibility and hard to reunite. The prepared nano-silver three-proofing antibiotic finishing agent can be used for one-bath finishing, and is simple in process and convenient for operation in comparison with dividing-bath finishing.

The invention provides a preparation method of a water-based chlorinated polyvinyl chloride anti-corrosive paint. The water-based chlorinated polyvinyl chloride anti-corrosive paint is prepared from the following raw materials: water-based epoxy resin, chlorinated polyvinyl chloride, dispersant, stabilizer, bactericide, defoaming agent, carbon black, zinc phosphate, barium sulfate, corrosion inhibitor, leveling agent, drying agent and thickening agent. The preparation method comprises the following steps: evenly stirring related raw materials according to the formula, and grinding with a sand mill until the fineness is 30-60 mu m; and while stirring, adding the residual chlorinated polyvinyl chloride, stabilizer, binder, bactericide, leveling agent, drying agent and thickening agent, homogenizing, and filtering.

The invention discloses a method for preparing sea-island ultrafine fiber PU (polyurethane) leather base cloth by using an additive-type water proofing, oil repellent and antifouling finishing agent. The method comprises the following steps: the additive-type water proofing, oil repellent and antifouling finishing agent is added to solvent type PU, an auxiliary, color paste, a dispersing agent and a solvent raw material, the mixture is uniformly mixed to form wet-process impregnation slurry, then non-woven fabric formed by punching sea-island short fiber taking nylon 6 and polyethylene as the raw materials is impregnated in the wet-process slurry, solidified and washed, then polyethylene is extracted from thermal toluene with decrement, and the water proofing, oil repellent and antifouling ultrafine fiber PU leather base cloth is obtained after expanding and drying, oil applying and leather tanning. The water proofing, oil repellent and antifouling effects of the base cloth can be guaranteed, and soft hand feel can be kept; the ultrafine fiber PU leather base cloth can be used for preparing outdoor sportswear, articles for labor protection, leisure home accessories or automobile interior trim, and has broad market prospect.

The invention provides nano waterproof, oil-proof and antifouling finishing liquid which comprises a waterproof, oil-proof and antifouling fluorine-containing finishing agent and nano ceramic powder dispersion liquid. According to the invention, fabric has an excellent nano waterproof, oil-proof and antifouling function; after multiple times of washing, the nano waterproof, oil-proof and antifouling effect of the fabric is maintained well; moreover, the color fastness is high, and the air permeability and moisture permeability of the fabric are perfect; and after the finishing, the breaking strength of the fabric is not obviously reduced.

The invention discloses a mutually perforating network high anticorrosion primer and a preparation method. Eighteen types of raw materials, such as first tung oil, first rosin, 424<#>, refined castor oil, polyester chips, xylene, cellulose, butyl acetate, aluminum triphosphate, green silicon carbide, various pigments, and the like, are used to result in the IPN stereo chemical structure of a product through technological processes of melting, alcoholysis, esterification, diluting, high speed decomposition, sand milling, filtration, etc. The deficiency that the anticorrosion performance of the present primer is not ideal is overcome. Specific high anticorrosion performance is provided. A coated film is provided with no changes after being immersed in 30 percent of phosphoric acid solution, 5 percent of salt water and xylene solution for 10000h. Permanently applied to the environment of under 200 DEG C, the primer is characterized in that the flexibility is smaller than 1mm, the hardness reaches to 3H, the surface adhesion reaches to 1 grade and the positive and reverse impact strength is 50kg.cm. With large expansion application value and considerable social and economical benefits, the primer can be used together with various topcoats and can be directly added with special thinner to be used for the construction.

The invention discloses a three-proofing finishing agent for textile, as well as a preparation method and application thereof, and belongs to the technical field of textile finishing agents. The preparation method comprises the following steps: (1) adding a comonomer mixture, silicon dioxide hydrosol and an emulsifier into a solvent, and emulsifying to obtain pre-emulsion; (2) adding an initiator into the pre-emulsion, and polymerizing to prepare the three-proofing finishing agent for textile. According to the preparation method, the silicon dioxide hydrosol is introduced into fluoro-containing polymer with low surface energy and water and oil repelling performance, a nanoscale multi-dimensional rough structure is given to the surface of finished textile, super-hydrophobic / super oleophobic performance is shown, and the finishing agent has a better three-proofing effect; and a dopamine group with strong adhesion and self-crosslinking characteristics is introduced, so that the adhesion performance and crosslinking firmness of the three-proofing finishing agent can be remarkably enhanced, adhesion between the three-proofing finishing agent and a treated base material can be promoted, and the durability and washing resistance of the three-proofing effect of the finished textile can be improved.

The invention discloses a preparation process of an ultraviolet-proof multifunctional textile fabric. A treatment process of a textile fabric is finished by three steps of an ultraviolet-proof treatment process, a padding, setting and finishing process, and drying, wherein during padding, setting and finishing, the textile fabric is subjected to padding, setting and finishing in nano-finishing liquid. In the preparation process of the textile fabric, provided by the invention, the specific nano-finishing liquid is adopted, so that the fabric has good nano-waterproof, oilproof and antifouling functions; after the fabric is washed with water for many times, the three-proofing effect is still maintained good, the color fastness of each item is high, and the air permeability and the wet permeability of the fabric are high; after fabric strength is finished, the breaking strength of the fabric is not reduced obviously; by adoption of the ultraviolet-proof treatment process, a yarn dyed fabric has a good ultraviolet-proof function and effectively fulfills the aim of resisting ultraviolet for a long time.

The invention relates to a photoelectric coded lock. The photoelectric coded lock consists of a password setting device, a position varying code inputting device, a position shifting code transmitter, a code storage restorer and a door opening system. The photoelectric coded lock is free from limiting the digital number of a password and free from limiting the password quantity on each digit, and a coded lock with multiple digital numbers and multiple passwords on each digit as well as high safety can be manufactured according to the requirement. The lock is controlled mutually by photo and electricity and integrates a printing circuit, so that the machine is reasonably combined with the electricity, the size is moderate, and the cost is controllable. The lock is simple and convenient for setting the password, the password is short and easy to remember, the lock is easy to operate and fast to unlock, and the locking performance is stable; the lock is a pure digitalized lock, so that the safety is improved compared with the modern coded lock; and the photoelectric coded lock is suitable for different installation environments and different people to use, and can be widely applied to a security door, a safe case, a bank vault, a national security military department, ships, cars and all relatively fixed door cabinets, therefore, the trouble for carrying a key can be thoroughly avoided, and people can enjoy a convenient life brought by the scientific and technological innovation. Once a product of the photoelectric coded lock is issued in the market, a great economic benefit and social benefit can be produced.

The invention discloses BOPP thermosensitive membrane and a production method thereof. The BOPP thermosensitive membrane comprises BOPP base membrane, a base coat layer, a chromogenic layer and a protective layer, wherein the base coat layer, the chromogenic layer and the protective layer are sequentially arranged on the BOPP base membrane. The production method of the BOPP thermosensitive membrane comprises the following steps of (1) selecting BOPP membrane as a coating base material; (2) producing base coat layer coating layer; (3) producing chromogenic layer coating liquid; (4) producing protective layer coating liquid; and (5) pumping the coating liquid of the various layers into coating machine material grooves respectively, and adopting a measuring bar coating method for sequentiallycoating the base coat layer, the chromogenic layer and the protective layer over the paper base material. The product has high-definition printing performance, and the printing requirements of printers with different energy are met; the product has excellent resistance to dry and wet rubbing and three proofing performance, and can be used in environments in contact with water and oil for a long time; and before and after printing, the product can be repeatedly rubbed without coating shedding, and no developed images are lost, so that information fidelity in practical use is guaranteed.

The invention discloses a three-proofing school uniform and a making method thereof. The three-proofing school uniform is made of a three-proofing fabric; the three-proofing fabric is formed in the mode that a composite fiber A and a composite fiber B are blended and finished through a compound three-proofing finishing agent. The composite fiber A comprises, by weight, 82-95 parts of cotton fibers, 5-16 parts of devil's rush herb fibers and 4-12 parts of superfine pearl powder. The composite fiber B comprises, by weight, 25-35 parts of polyurethane fibers, 45-60 parts of polyester fibers, 8-14parts of devil's rush herb fibers, 1-2.2 parts of fatty alcohol ether phosphate sylvite and 1.5-3.5 parts of a dandelion extract. The compound three-proofing finishing agent comprises, by weight, 45-55 parts of an oleophobol SLA-NEW three-proofing finishing agent, 2-3.5 parts of fatty alcohol polyoxyethylene ether, 48-60 parts of a nano zinc oxide dispersion solution and 0.6-0.9 part of citric acid. The three-proofing school uniform has a good three-proofing effect and good performance such as moisture absorption and air permeation.

The invention relates to a full-ocean-depth high-strength pressure-resistant spectral analyzer based on underwater detection and solves the problems that a conventional ocean optical instrument is lowin pressure resistance and sealing property and cannot work reliably in a full-ocean-depth environment. The full-ocean-depth high-strength pressure-resistant spectral analyzer comprises a housing, abattery component, a flashing light source, a circuit control processing system, objective lens barrels, a first collimating objective lens set, a second collimating objective lens set, a slit, a grating and a linear array detector, wherein the housing comprises a sealing cover plate, a battery housing, a main housing and a grating seat; the battery component is arranged in the battery housing; the flashing light source and the circuit control processing system are arranged on a light source board; the light source board is fixedly arranged in the main housing; the slit, the grating and the linear array detector are fixedly arranged on the grating seat; a sample pool which is concave inwards is arranged on the main housing; the two objective lens barrels are arranged on two sides of the sample pool respectively and fixedly connected with the main housing; and the first collimating objective lens set and the second collimating objective lens set are arranged in the objective lens barrels respectively.

The invention provides a preparation method of a water-based acrylic acid epoxy resin anti-corrosive paint. The water-based acrylic acid epoxy resin anti-corrosive paint is prepared from the following raw materials: water-based acrylic acid epoxy resin, triethylamine, dispersant, stabilizer, bactericide, defoaming agent, carbon black, zinc phosphate, barium sulfate, corrosion inhibitor, leveling agent, drying agent and thickening agent. The preparation method comprises the following steps: evenly stirring related raw materials according to the formula, and grinding with a sand mill until the fineness is 30-60 mu m; and while stirring, adding the residual triethylamine, stabilizer, binder, bactericide, leveling agent, drying agent and thickening agent, homogenizing, and filtering.

The invention belongs to the technical field of coatings, and particularly relates to a fluorescent three-proofing coating material and a preparation method thereof. The fluorescent three-proofing coating material is composed of a component A and a component B. The component A is fluorine-containing acrylic resin of a hybrid grafted fluorescent pigment, and the component B is composed of a prepolymer, a solvent and the like. The preparation method of the fluorescent three-proofing coating material comprises the following specific steps: A, preparing a double-bond-containing grafted fluorescentpigment; B, preparing the fluorine-containing acrylic resin of the hybrid grafted fluorescent pigment; C, preparing the component B; and D, preparing the fluorescent three-proofing coating material.The fluorescent pigment is grafted into the fluorine-containing acrylic resin structure, the aging resistance of a fluorescent coating layer is greatly improved in a resin coating mode, the fluorescent coating layer has good weather resistance and three-proofing performance, the problem that a traditional fluorescent coating is poor in light retention and color retention is solved, and the fluorescent coating is wide in prospect and suitable for popularization.

The invention provides an insulating protective film coating and a preparation method thereof, which comprise the following components in percentage by weight: 5-25% of normal temperature self-curingfluororesin, 50-90% of perfluoroalkyl ether, 2-15% of propylene glycol methyl ether and 2-15% of D100 solvent oil. A hard transparent insulating protective film for power and electrical equipment withthe three-prevention function provided by the invention can effectively prevent harmful comprehensive pollutants from adhering to the surface of the equipment and greatly relieve corrosion and salt corrosion on the surface of the equipment. After coating, as a smooth and flat anti-pollution hard insulating film is formed on the equipment, various harmful pollutants are difficult to adhere and accumulate on the equipment, thus keeping the equipment clean for a long time. At the same time, due to its excellent weather resistance, mildew resistance, moisture resistance, salt fog resistance and other three-prevention properties, the insulating protective film coating is also conducive to the long-term stable operation of the equipment.

The invention discloses a production process of a high wear-resistant chenille three-proofing fabric. The production process comprises the following steps of S1 preparation of chenille yarns, S2 chenille yarn space dyeing, S3 chenille fabric weaving, S4 chenille fabric flame retardant finishing, and S5 chenille fabric three-proofing finishing. According to the production process of the high wear-resistant chenille three-proofing fabric, by changing the structure of the chenille yarns, a plurality of core yarns including hot-melt filaments are used, and the degree of twist of the core yarns isincreased, so that the wear resistance of the chenille yarns is improved, and wool slip is reduced as much as possible; and a flame retardant and three-proofing finishing process of the chenille fabric is optimized, the flame retardant properties and three-proofing effect of the chenille fabric are improved through the selection of a suitable flame retardant and three-proofing finishing agent andthe reasonable selection of the process, and the fabric still has good flame retardant properties and three-proofing effect after repeated washing.

The invention discloses a preparation method of a three-proofing finishing agent for hard water. The three-proofing finishing agent for the hard water is an oil-in-water type high-molecular polymer emulsion, wherein the high-molecular polymer is prepared by emulsifying perfluoroalkylated (methyl) acrylate and (methyl) acrylate through a composite surfactant and then polymerizing by initiating of an initiator. The three-proofing finishing agent is generally that tap water or water from river is diluted to reach a certain concentration during the actual use in a printing and dyeing mill, and the tap water, in particular the water from the river, contains a certain amount of metal ions which influence the stability and the use effect of the three-proofing finishing agent. To solve the abovementioned problem, the three-proofing finishing agent is added with organic acid capable of chelating, the pH can be regulated, and the water quality can be improved, and as a result, the three-proofing finishing agent has a good three-proofing effect in the hard water, and the performance in the actual use is greatly improved.

The invention belongs to the technical field of textile printing and dyeing and in particular relates to a fabric with a high hand feeling comfort degree and a finishing method thereof. The fabric isobtained by treating through the finishing method; the finishing method comprises auxiliary agent padding, wherein an auxiliary agent is a water solution of a resin auxiliary agent, a catalyst, a fiber protection agent, a formaldehyde catching agent, a three-proofing auxiliary agent and a water-repelling softening agent, wherein the water-repelling softening agent is TF-4900. The fabric provided by the invention has extremely good three-proofing effect, a soft and smooth hand feeling, and high three-proofing washing fastness. The invention further provides the finishing method of the fabric; the hand feeling grade of the fabric is improved to 3.5 to 4 grades, the water proofing reaches 100 marks before washing in American AATCC 22-2010 standards, the oil proofing reaches grade 6.0 in American AATCC 198-2010 standards and the pollution proofing reaches grade 7.0 in American AATCC 193-2010 standards; after 5 times of washing, the water proofing is 95 marks, the oil proofing is grade 5.5and the pollution proofing is grade 6.5; after 30 times of washing, the water proofing is 90 marks, the oil proofing is grade 5.0 and the pollution proofing is grade 6.0.

The present invention relates to a screen sound emission structure for a terminal. The screen sound emission structure comprises a screen and a rear shell; the screen and the rear shell are in seal connection so as to form a sealed front cavity; a rear cavity for balancing part of the pressure of a gas in the front cavity is defined in the front cavity; a magnetic piston is arranged in the rear cavity; the magnetic piston can move in a reciprocating manner and can be used for compressing the gas in the front cavity, so that a screen can be deformed, and therefore, sound pressure can be generated, and sound is emitted; and a conductive coil that drives the magnetic piston to move through electromagnetic induction is wound around the magnetic piston. According to the screen sound emission structure for the terminal of the invention, the size of the front cavity is large, so that the screen sound emission structure has the advantages of good low frequency effect, large screen area, capability of pushing a large volume of external air and large generated sound pressure; and the screen and the rear shell are sealed to form the front cavity, and therefore, the screen sound emission structure has high three-prevention performance and is not affected by external environment.

The invention provides a preparation method for a special waterborne vinylidene chloride anticorrosive paint used for an agitator tank. The anticorrosive paint comprises the following raw materials: vinylidene chloride resin, xylene, a drier, deionized water, a dispersing agent, an antifoaming agent, 1 to 2 parts of an anti-settling agent, 0.5 to 2 parts of an antiseptic and 0.5 to 1 part of an anti-rust agent. The preparation method comprises the following steps: successively adding raw materials into a reaction vessel and carrying out stirring. The anticorrosive paint prepared by using the method has the advantages of good storage stability, high hardness of a formed film, scratch resistance, good resistance to dampness, mildew and salt fog, excellent protection and decoration performance, conservation of resources and good prospect as a anticorrosive paint for metal.

The invention discloses a foamed aluminum inner liner power distribution cabinet with an infrared sensing alarm system, and belongs to the technical field of a power distribution cabinet. The technical scheme is as follows: the inner walls of a cabinet body, a front door and a back door are each provided with a foamed aluminum layer, the housing of the cabinet body is coated by epoxy powdery paints, the front door or the back door of the cabinet body is provided with a cabinet door return apparatus, a switch contact and a conductor connector in the cabinet body are each provided with an infrared temperature measuring probe, the infrared temperature measuring probes are electrically connected with a front circuit, the front circuit is electrically connected with an A / D converter, the A / D converter is electrically connected with a single-chip microcomputer I, the single-chip microcomputer I is electrically connected with a buzzing alarm device and a GSM module, one control signal output by the single-chip microcomputer I is transmitted to the buzzing alarm device for onsite alarm, and the other control signal output by the single-chip microcomputer I is transmitted to the GSM module and an alarm signal for a mobile phone user to receive in a short message mode is emitted by the GSM module. The foamed aluminum inner liner power distribution cabinet with the infrared sensing alarm system can be widely applied to a power distribution cabinet.

The invention discloses a preparing method of multifunctional protection coating of medical instruments and medical consumables. The preparing method comprises the steps that ethyl alcohol and deionized water are adopted to clean the medical instruments or medical consumables in sequence; the medical instruments or medical consumables are subjected to plasma surface activation; silane G-570 is adopted to conduct surface adhesion pretreatment; the medical instruments or medical consumables subjected to surface adhesion pretreatment are placed in a vacuum applying chamber, quaternary ammonium salt or antimicrobial peptide is placed in a medicine inlet groove in the middle of the vacuum applying chamber according to certain concentration at the same time, the medical instruments or medical consumables are subjected to parylene coating treatment, in the coating process, a bactericide evaporates and binds to the parylene coating, and thus the bactericide and the parylene coating are subjected to copolymerization to form a parylene coating structure containing the bactericide. The prepared multifunctional protection coating is suitable for various types of medical instruments, and provides multifunctional surface protection functions such as long-term antibacterial protection, biocompatibility, fouling resistance, corrosion resistance, rust resistance and moisture resistance for theimplanted and non-planted medical instruments and the medical consumables.

The invention relates to a housing with a portable buckle dustproof-waterproof-shakeproof structure. The housing comprises an upper housing and a lower housing. The upper housing is connected with the lower housing through the buckle dustproof-waterproof-shakeproof structure. The buckle dustproof-waterproof-shakeproof structure comprises a buckle chamber which is arranged on the inner wall of the upper housing, a buckle platform and a buckling press board which are arranged on the inner wall of the lower housing. The buckle chamber is composed of an upper retaining wall and a side surrounding wall. The bottom of the buckle chamber is provided with an opening. The periphery of the top of the buckle platform is provided with steps which match the lower edge of the side surrounding wall. The upper part of the buckle platform is inlaid into the opening of the buckle chamber. The top of the buckle platform forms a middle retraining wall which blocks the opening of the buckle chamber. The lower part of the buckle platform is provided with a small chamber with a bottom opening. The buckling press board closely abuts against the bottom surface of the lower housing. The buckling press board is provided with hook-shaped buckles. The bayonets of the hook-shaped buckles face outwards. The bottom of the small chamber is provided with a buckling side. After the hook-shaped buckles are totally pressed into the small chamber, the bayonets of the hook-shaped buckles are corresponding embedded into the buckling side. The housing has advantages of ingenious structure, reasonable design, small size, high dustproof-waterproof-shakeproof and low cost.

The invention provides a preparation method of a water-based polyurethane anti-corrosive paint. The water-based polyurethane anti-corrosive paint is prepared from the following raw materials: water-based epoxy resin, polyurethane, dispersant, stabilizer, bactericide, defoaming agent, carbon black, zinc phosphate, barium sulfate, corrosion inhibitor, leveling agent, drying agent and thickening agent. The preparation method comprises the following steps: evenly stirring related raw materials according to the formula, and grinding with a sand mill until the fineness is 30-60 mu m; and while stirring, adding the residual polyurethane, stabilizer, binder, bactericide, leveling agent, drying agent and thickening agent, homogenizing, and filtering.

The invention discloses a reinforced sealing case based on an MTCA standard, which is characterized in that radiating fins are uniformly arranged on the outer surfaces of a top cover plate and a bottom cover plate of a case body, and air duct inlets and outlets are formed in the tops and the bottoms of a front panel assembly and a rear panel assembly; more than one module is placed in the case, and the module comprises an AMC module; a reinforced cold guide plate is arranged on the module and is used for transferring heat generated by the AMC module to the cooling fins. According to the reinforced sealing case, the environmental adaptability of existing electronic equipment such as communication equipment or navigation equipment, especially military communication equipment or navigation equipment used under severe environmental conditions can be improved, and the equipment has excellent assembly and maintenance performance, three-proofing capacity, heat dissipation capacity, vibrationresistance, impact resistance and structural electromagnetic compatibility.

The invention relates to fluorine-containing organic silicon coating adhesive and a preparation method thereof. The fluorine-containing organic silicon coating adhesive is prepared from the followingraw materials in parts by weight: 5 to 100 parts of base adhesive A, 5 to 100 parts of base adhesive B, 1 to 10 parts of crosslinking agent, 2 to 10 parts of base material tackifier, 1 to 5 parts of catalyst and 30 to 60 parts of solvent, wherein the base adhesive A is hydroxyl terminated methyl-3,3,3-trifluoropropyl(siloxane and polysiloxane); and the base adhesive B is hydrogen-containing fluorosilicon oil. The fluorine-containing organic silicon coating adhesive is adjustable in curing speed and is oil-resistant and salt-spray resistant; the chemical corrosion resistance is greatly enhancedand the adhesive property is excellent; and the fluorine-containing organic silicon coating adhesive has three-prevention effect and excellent performance.

The invention discloses a high-performance three-proofing anti-bacterial fabric finishing method with a simple process. A high-performance three-proofing anti-bacterial fabric is obtained by performing one bath dyeing and finishing on a cotton fabric by using a composite three-proofing anti-bacterial finishing agent prepared from a nano silver colloid anti-bacterial finishing agent, an HS1100 three-proofing finishing agent, an ATB9800 anti-bacterial finishing agent and a TPM9007 anti-bacterial finishing agent. According to the method, natural and degradable macromolecules, i.e., starch is taken as a protective agent and a dispersant, and a simple liquid phase chemical reduction method is adopted to prepare nano silver colloid coated with the starch, so the process is simple, greening and environment protection are realized, the dispersity is good, and the agglomeration possibility is low. The prepared nano silver three-proofing anti-bacterial finishing agent can be used for one bath dyeing and finishing, and is simple in process and convenient to operate relative to separated bath finishing.