245results about How to "High fastness" patented technology

The invention discloses a method for preparing an iridescent cuprous oxide nanoparticle photonic crystal, which is characterized in that monodisperse spherical particles are obtained through a method for controlling the crystal form of cuprous oxide nanoparticles, so that the monodisperse spherical particles can be self-assembled into a three-dimensional ordered photonic crystal structure, thereby generating gorgeous iridescent color. The invention relates to a method for preparing iridescent cuprous oxide nanoparticle photonic crystals, which adopts monodisperse spherical cuprous oxide nanoparticles with a polycrystalline structure as a structural unit, and is synthesized by the following steps: 1) dissolving high-molecular-weight polyvinylpyrrolidone, trisodium citrate and soluble bivalent copper salt in a mixed solvent of polyethylene glycol and water; stirring until the materials are completely dissolved; (2) dropwise adding a strong alkali solution into the solution prepared in the step (1), vigorously stirring, quickly adding a reducing agent, and stopping after the reaction is completed under stirring; and 3) separating a reaction product, washing and drying in vacuum.

The invention relates to the technical field of dyeing of brocade-spandex fabrics, and particularly discloses a dyeing process for improving dyeing saturation and color fastness and a brocade-spandex dyed fabric. A dyeing process for improving dyeing saturation and color fastness comprises the following steps: firstly, mixing dye, a leveling agent, brocade spandex gray cloth and water to prepare primarily dyed cloth; then adding a color fixing agent into the primarily dyed cloth to obtain color-fixed wet cloth; and finally, loosening, drying and shaping the color-fixed wet cloth to obtain the brocade-spandex dyed fabric. A brocade-spandex dyed fabric is prepared by a dyeing process for improving dyeing saturation and color fastness. According to the method, the problems of non-uniform dyeing and low color fastness of the brocade-spandex fabric are effectively solved, and the brocade-spandex dyed fabric with good dyeing saturation and color fastness is obtained.

The invention belongs to the technical field of papermaking dyes, and particularly relates to an environment-friendly dye for papermaking and a preparation method thereof. According to the invention, the sulfonate surfactant is prepared by a two-step method, and the sulfonate surfactant has excellent dispersibility, stability and emulsibility, and has good compatibility with alkaline auramine O; the sulfonate surfactant is compounded with the alkaline bright yellow O for use, so that the solubility, dispersion stability and high-temperature stability of the alkaline bright yellow O dye can be remarkably improved in manners of reducing interfacial tension, increasing wettability, improving permeation and the like. When the prepared environment-friendly dye is used for dyeing paper, the dye-uptake and the color fastness to light of the dye can be obviously improved, the dyeing uniformity and effect are improved, the dye waste is effectively reduced, and the requirement of green development is met.

The invention belongs to the technical field of textile dyeing and finishing, and relates to a method for washing dyed fabric based on a micro-nano bubble technology, which comprises the following steps of: continuously injecting water containing micro-nano bubbles at the temperature of 10-80 DEG C into a washing tank or a dyeing vat in which the dyed fabric is placed by utilizing a micro-nano bubble generating device until the fabric is completely immersed in the water; the micro-nano bubbles are continuously generated to wash the dyed fabric for 30 seconds to 10 minutes, and the process of washing the fabric by using the water containing the micro-nano bubbles can be repeated according to the color fastness requirement of the washed and dyed fabric; the fabric contains any one fiber component of cellulosic fiber, wool and silk; the micro-nano bubbles are air bubbles, oxygen bubbles, hydrogen bubbles, nitrogen bubbles, helium bubbles or argon bubbles; the minimum diameter of the micro-nano bubbles is smaller than or equal to the pore diameter of micropores in fibers after the fabric is swelled. In the washing process, only micro-nano bubble water is used, a soaping agent is not used, the washing time is shortened to 30s-10min, and the color fastness of the washed fabric is improved.

The invention relates to the technical field of fabric processing, and particularly discloses a high-color-fastness nylon / spandex cationic polyester mountain-climbing nylon fabric and a processing technology thereof, and the processing technology specifically comprises the steps of weaving, desizing and preshrinking, blank fixing, desizing in a cylinder, one-bath dyeing and shaping finishing. Wherein the bath ratio is 1: 10, water is fed, a chinlon sealing agent is firstly added, the temperature is increased to 65-70 DEG C for treatment, then the temperature is reduced to 40 + / -2 DEG C, a leveling agent, a nonionic cationic polyester dyeing assistant and cationic dye dissolved by acetic acid are sequentially added, the pH value is adjusted, then the temperature is increased to 60-65 DEG C at a first rate and subjected to heat preservation dyeing, then the temperature is increased to 90 + / -2 DEG C at a second rate and subjected to heat preservation dyeing, and the temperature is increased to 90 + / -2 DEG C at a third rate and subjected to heat preservation dyeing; sequentially adding a nonionic dispersing agent WA and an anionic dispersing agent NNO, carrying out heat-preservation operation, adding an acid dye, heating to 102-105 DEG C at a third rate, and carrying out heat-preservation dyeing. The one-bath dyeing of the cationic dye and the acid dye is realized, and the color fastness and the apparent depth are improved.

The invention relates to the technical field of textile printing and dyeing, and discloses a knitted fabric and a dyeing and finishing processing method thereof. The blended yarn is formed by blending polyester fibers and viscose fibers. The mass ratio of the polyester fibers to the viscose fibers is 1: (0.1-10). The knitted fabric is formed by weaving the blended yarn. The mass percent of the blended yarns is greater than or equal to 50%. The blended yarn provided by the invention comprises the polyester fibers and the viscose fibers, and the content ratio of the polyester fibers and the viscose fibers is wide in change range; the blended yarn can be independently used as a raw material or woven into knitted fabric together with spandex / chemical fiber filaments and other raw materials, and the defects that an existing knitted fabric is single in component, the content of the raw materials is strictly limited and the like are overcome. According to the dyeing and finishing processing method of the fabric, the knitted fabric with different components can be treated, the fabric is bright in color, excellent in washing fastness, rubbing fastness and pilling resistance and soft in hand feeling, and the application requirements of the clothing industry can be better met.

The invention discloses a high-color-fastness structural color film and a preparation method thereof, and belongs to the technical field of structural color films, and the preparation method comprises the following steps: S1, adding modified nano colloidal microspheres and carbon black into absolute ethyl alcohol, and carrying out ultrasonic dispersion for 40 min to obtain a microsphere dispersion liquid; s2, uniformly spreading the microsphere dispersion liquid on a smooth and flat polyfluortetraethylene plate, and drying at 40-45 DEG C to obtain a modified microglobulin photonic crystal template; and S3, injecting the modified polyurethane precursor solution into the modified microglobulin stone photonic crystal template, vacuumizing, defoaming, and curing at 80 DEG C to obtain the high-color-fastness structural membrane. According to the invention, the modified nano colloidal microspheres and the carbon black are taken as assembly elements of the photonic crystal, so that the stability of the structural color film is improved, and meanwhile, under the synergistic effect of the modified polyurethane precursor solution, cracks can be effectively prevented, and the photonic crystal structure is prevented from being damaged, so that the color fastness and durability of the structural color film are improved.

The invention discloses a flame-retardant sunshade foaming coating fabric and a preparation method thereof, and belongs to the technical field of functional textile processing. The fabric is prepared according to the following steps: mixing polyglutamic acid, dopamine, an amino-containing phosphonic acid compound and carbodiimide hydrochloride, and carrying out condensation reaction to prepare polyglutamic acid containing dopa and phosphonic acid side groups; the preparation method comprises the following steps: adding SiO2 aerogel particles, dopamine and polyglutamic acid containing dopa and phosphonic acid side groups into an alkaline solution to obtain a reaction mixed solution, and reacting to obtain a phosphorus-nitrogen-silicon synergistic flame-retardant SiO2 aerogel particle dispersion liquid; adding polyacrylate slurry and a kerosene thickener into the phosphorus-nitrogen-silicon synergistic flame-retardant SiO2 aerogel particle dispersion liquid to prepare a coating finishing liquid, coating the surface of a sunshade fabric with the coating finishing liquid, and drying to obtain the flame-retardant sunshade foaming coating fabric. The afterflame time and the smoldering time of the obtained fabric are less than 2s, the damaged length is less than 5cm, the fabric has good washing resistance, and the flame retardant property of the fabric is not obviously reduced after the fabric is washed for 10 times.

The invention discloses a natural vegetable dye dyeing process for a blended fabric. The natural vegetable dye dyeing process comprises the following steps: S1, extracting a natural vegetable dye; s2, dyeing: dyeing the blended fabric by adopting a direct dyeing method or mordanting method; the dyeing temperature, the pH value, the dyeing time and the dye concentration of the blended fabric are determined through a direct dyeing method, and on the basis, the blended fabric is dyed through a mordanting method; s3, soaping: soaping the dyed fabric with a soaping solution; the mordanting method comprises a pre-mordanting method, a one-bath mordanting method or a post-mordanting method. According to the natural vegetable dye dyeing process for the blended fabric, the blended fabric is dyed by adopting a natural vegetable dye one-step method, so that the blended fabric has relatively good dry and wet rubbing fastness and soaping fastness, the UPF value of the dyed fabric can be up to 100 +, and the dyed fabric has good ultraviolet resistance. The application range of the natural plant dye is expanded.

The invention provides a multi-layer thermochromic coating, a fabric and a preparation method of the fabric, and belongs to the technical field of thermosensitive coatings. The coating is formed by mixing water-soluble polyurethane and four thermochromic microcapsule powder with different temperature ranges, and the coating is endowed with four layers of thermochromism. Uniformly coating the surface of the fabric with the prepared coating, and controlling the using amount of the coating through a scraper to ensure the thickness of the coating; the multi-layer thermochromic fabric is characterized in that the fabric is coated with thermochromic paint, then the fabric coated with the thermochromic paint is placed in a drying oven, drying treatment is conducted at the set temperature, and the multi-layer thermochromic fabric is obtained. Meanwhile, the fabric has the properties of air permeability, good hand feeling, breaking strength, washing resistance, wear resistance, solarization resistance, dry and wet friction resistance and the like, is suitable for the fields of textile, clothing, military industry and the like, and has a wide application prospect.

The invention discloses a sizing agent and a preparation process and an application method thereof, and relates to the technical field of textile dyestuff, the sizing agent comprises 160-180 parts of a cross-linked amino silicone acrylic emulsion, 8-12 parts of a color paste dye, 2-4 parts of an accelerating agent, 1.8-2 parts of an emulsifying dispersant and 0.08-0.1 part of a defoaming agent, the cross-linked amino silicone acrylic emulsion is prepared by emulsion copolymerization of an acrylate monomer and an amino silicon oil modified monomer, the amino silicon oil modified monomer is prepared by reaction of amino-terminated silicon oil, allyl-terminated epoxy polyether and p-vinyl aniline, the color paste dye specifically selects a reactive dye containing vinyl sulfuryl, and the accelerating agent is an alkaline accelerating agent. The cross-linked amino silicone acrylic emulsion, the reactive dye, the alkaline accelerating agent and other assistants are mixed to prepare the sizing agent, the sizing agent can effectively reduce the number of hairiness on the surface of the yarn and improve the surface state of the yarn and the hand feeling of the fabric, and the sizing agent has good coloring fastness and dyeing depth.

The utility model relates to the field of hardware tools, in particular to novel nozzle pliers, a pliers head is provided with a pliers blade, a pliers body comprises a pliers handle, a hinging part and an L-shaped connecting part, and the pliers handle, the hinging part and the L-shaped connecting part are integrally formed. The pin shaft penetrates through the two hinging parts, and the two clamp bodies are movably connected through the pin shaft of the hinging parts; a dovetail groove is formed in the vertical face of the L-shaped connecting part, a dovetail protrusion matched with the dovetail groove is arranged on the side face of the tail of the plier head, and the L-shaped connecting part and the plier head are connected in a clamped mode through the dovetail groove and the dovetail protrusion. The tail portion of the tong head is provided with a segmental protruding block, a notch is formed in the outer side of the segmental protruding block, a tong head check block is plugged in the notch, namely, the tong head check block is arranged on the outer side of the segmental protruding block, and the bottom of the outer side of the tong head check block is firmly welded to the L-shaped connecting part. A groove is formed in the horizontal plane of the L-shaped connecting part, and the segmental protruding block and the tong head check block are both arranged in the groove. The utility model has the advantages of easy replacement, cost saving, convenient use, sturdiness and durability and the like.

The invention discloses a cationic modifier and a preparation method and an application process thereof, and the modifier has the following structural formula: # imgabs0 #. The cationic modifier has the beneficial effects that the dye-uptake rate of cellulose fibers modified by the cationic modifier is improved by about 30% compared with that of unmodified cellulose fibers, and residual water of dye liquor is almost colorless; anhydrous sodium sulphate for accelerating dyeing and sodium carbonate for fixing color are not needed in the dyeing process, so that a new salt-free dyeing process is really realized, and the residual water of the dyeing liquid can be recycled; compared with a conventional dyeing process, the novel salt-free dyeing process has the advantages that carbon emission is reduced by about 35% and sewage emission is reduced by 20 tons per ten thousand meters when the same dyeing depth is achieved through comparison data of a dyeing factory.

The invention provides a large yarn winding forming machine, and belongs to the technical field of tools, the large yarn winding forming machine comprises a machine box, and the machine box is arranged perpendicular to the ground; the first clamping mechanism is positioned at the upper end of the case and is used for clamping one end of the sample; the second clamping mechanism is arranged on one side of the lower end of the case, is far away from the first clamping mechanism and is used for clamping the other end of the sample; the winding mechanism is located on the axis of a connecting line between the first clamping mechanism and the second clamping mechanism and can reciprocate between the first clamping mechanism and the second clamping mechanism; the winding mechanism is arranged on the transmission mechanism, and the transmission mechanism drives the winding mechanism to move; the winding mechanism comprises a winding assembly, a rotating assembly and a motor I, and the winding assembly is arranged on the rotating assembly; during working, a sample penetrates through the rotating assembly, the motor I drives the rotating assembly to rotate in the circumferential direction of the sample, and the winding assembly winds the sample. According to the large yarn winding forming machine, in the winding process, the winding yarn is tensioned by the tension regulator and is detected in real time through the tensiometer, and the rotating speed and the distance preset by the machine, impregnation of resin in the gluing device on the winding yarn and the like are achieved; the problems that the tensioning degree is unstable due to manual winding, the steering angle is not easy to control and the tow plate falls off after being wound and formed are avoided, the strength of the tow plate is guaranteed, and the winding efficiency is improved.

The invention relates to the technical field of fiber acid dyeing, and particularly discloses a sheep villus fiber acid dyeing fixation method which comprises the following steps: mixing acetic acid, triethanolamine and cardanol polyoxyethylene (n) ether sulfate to obtain a prefabricated material a; caprolactam is mixed with rhamnolipid, polyvinylpyrrolidone and acylation modified chitosan, and a prefabricated material b is obtained; mesoporous silica, saturated ammonia water, tetraethoxysilane, potassium methoxide, dioxane and succinic anhydride are adopted to prepare a prefabricated material c; adding the prefabricated material a into the prefabricated material b, stirring, then adding the prefabricated material c, uniformly mixing, adjusting the pH value of the system to 5-6, adding cashmere fibers, keeping the temperature at 5-10 DEG C for 10-20 minutes, heating to 40-50 DEG C, keeping the temperature for 10-20 minutes, adding an acid dye and anhydrous sodium sulfate, uniformly stirring, keeping the temperature for 1-2 hours, heating to 80-90 DEG C, keeping the temperature for 30-50 minutes, taking out, washing, and airing at room temperature.

The invention relates to a polyurethane adhesive as well as a preparation method and application thereof. The adhesive is prepared from the following raw materials in percentage by weight: 35 to 65 weight percent of composite polyether polyol, 14 to 25 weight percent of polyisocyanate, 1 to 5 weight percent of hydrophilic chain extender, 1 to 5 weight percent of micromolecule chain extender, 0.05 to 3 weight percent of catalyst, 0.5 to 4 weight percent of neutralizer, 1 to 7 weight percent of end-capping reagent, 1 to 8 weight percent of silane coupling agent, 2 to 12 weight percent of mesoporous microsphere, 2 to 5 weight percent of isopropanol, 2 to 5 weight percent of butyl acetate, 0.2 to 4 weight percent of defoaming agent and the balance of water, wherein the composite polyether polyol is a composition of Mannich polyether polyol and flexible foam polyether polyol in a mass ratio of 1: (0.5-1); the adhesive disclosed by the invention can replace hot melt adhesive powder in garment pyrography, can improve the softness, air permeability, friction resistance and soaping-resistant color fastness of fabric pyrography printing, and can obviously reduce the film-forming drying and curing temperature of the adhesive at the same time.

A reactive dye composition, characterized in that: the reactive dye composition comprises component A, component B and component C, wherein the component A is selected from at least one of the dye compounds shown in formula (I) and (II) and their alkali metal salts, the component B is selected from at least one of the dye compounds shown in formula (III) and their alkali metal salts, and the component C is selected from at least one of the dye compounds shown in formula (IV) and their alkali metal salts; in the reactive dye composition, the mass percentage of component A is 10-80%, the mass percentage of component B is 1-30%, and the mass percentage of component C is 10-85%. The reactive dye composition and dye product provided by the present invention are mainly coffee color or jujube red, and have the characteristics of good lifting power, dyeing rate, color fixation rate, and excellent friction resistance and water washing fastness.

The invention belongs to the field of textile dyeing and finishing, and relates to a dyeing method for industrially preparing gambiered canton gauze silk, which comprises the following steps: 1) dip dyeing and hot drying of silk fabric (silk white body); (2) carrying out color fixation treatment on the dip-dyed / heat-dried fabric by utilizing enzyme treatment liquid; (3) the fabric obtained in the step (2) is sequentially and repeatedly subjected to the step (1) and the step (2) for 1-3 times, and a dyed product of the gambiered canton gauze silk is obtained. The method is simple and easy to implement, high in efficiency and controllable in cost, and can be used for industrially preparing gambiered canton silk products.

The invention relates to the technical field of heat stabilizers, in particular to the field of IPC C08K5, and more particularly relates to a PVC heat stabilizer and application thereof. The invention relates to a high-temperature-resistant flame retardant, which is prepared from the following components in percentage by weight: 5 to 20 percent of organic acid zinc salt, 2 to 15 percent of beta-diketone, 1 to 5 percent of polyhydric alcohol, 0.5 to 2 percent of nucleating agent, 1 to 10 percent of fatty acid lubricant and the balance of ternary hydrotalcite. When the modified PVC crystal plate is applied to the PVC crystal plate, the initial whiteness is considered, the long-term heat resistance and color fastness are prolonged, and meanwhile, the lasting heat resistance can be increased.

The invention relates to the technical field of fabric recovery, in particular to a production process of cyclically regenerated polylactic acid and low-temperature spandex fabric. The production process provided by the invention overcomes the problems of high stress of polylactic acid and low-temperature spandex fabrics at low temperature and poor dyeing and fixation effects. Four different types of fabrics including polylactic acid fibers, cotton fibers, polyester fibers and spandex are subjected to recovery treatment and physical treatment and then treated with an organic solvent and a phosphoric acid solution, and the raw materials are treated with a prepared PLA decomposition catalyst and a lactide ring-opening catalyst. Vitamin B12, a chain extender and isocyanate are supplemented in the technological process, and the dyeing process of low-temperature treatment is adopted, so that the stress of the regenerated polylactic acid and low-temperature spandex fabric is reduced, the dyeing and color fixing effects are good, and the closed loop of recycling and reusing of the polylactic acid and spandex waste fabric is realized.

This invention relates to a weather-resistant polyoxymethylene (POM) automotive sun visor material and its preparation method, belonging to the field of polymer materials technology. The weather-resistant POM automotive sun visor material prepared by this invention possesses excellent mechanical properties, UV aging resistance, and color fastness. This invention synthesizes an aging-resistant additive containing phosphate ester groups, triazine rings, morpholine rings, and tert-butyl groups. This additive can simultaneously exert peroxide decomposition, UV absorption, free radical scavenging, and steric stabilization effects, achieving efficient and in-situ synergistic effects at the molecular scale, solving the problems of component separation and asynchronous action in traditional systems. Furthermore, the aging-resistant additive synthesized in this invention, due to its polarity matching, can form uniform and strong intermolecular interactions (such as hydrogen bonds) with the POM matrix, serving as a dynamically reversible physical crosslinking point. This effectively improves the material's rigidity and strength while enhancing impact toughness through an energy dissipation mechanism.

The invention relates to the field of chemical fiber fabric dyeing, and discloses a dyeing guide device for chemical fiber fabric production, which comprises a separation block, the separation block is fixed in the middle of the interior of a dyeing bin, the interior of the dyeing bin is divided into two areas by the separation block, and the area positioned on the bottom surface of the separation block is a dip dyeing area; the area located on the top face of the separation block is a spray dyeing area, a limiting frame is movably arranged in the separation block, a transmission roller is rotationally arranged between the two ends of the limiting frame, and a cloth lifting roller is rotationally arranged at the highest point in the dyeing bin. According to the device, when the separation block can push the transmission roller to move towards the tail of the interior of the dyeing bin in the moving process, the gray fabric between the cloth lifting roller and the transmission roller is subjected to two strands of traction force at the moment, so that the gray fabric between the cloth lifting roller and the transmission roller is in a flat state, the subsequent spray dyeing effect is improved, and the spray dyeing efficiency is improved.

The invention discloses an efficient and environment-friendly dyeing process for ultra-high molecular weight polyethylene fibers, and relates to the technical field of textile material dyeing, pretreatment operation is needed when the polyethylene fibers are dyed, and the pretreatment operation comprises cleaning of the ultra-high molecular weight polyethylene fibers and treatment of a dyeing agent. The main components for preparing the dyeing agent comprise a disperse dye, an initiator, a reactive diluent, a buffer agent, an antistatic agent and a dye assistant.The method has the advantages that by conducting plasma treatment on the polyethylene fibers, the dyeing performance of the polyethylene fibers can be remarkably improved, the dye can permeate and adhere more easily, and the dyeing effect is better; according to the present invention, the dyeing agent is added to the polyethylene fiber, such that the brighter and lasting color can be obtained, the overall performance of the polyethylene fiber can be enhanced, the dyeing step of the polyethylene fiber material can be environmentally friendly and safe by using the Di-VS as the disperse dye for preparing the dyeing agent, and the Di-VS has characteristics of good dyeing property and good color fastness.

The utility model discloses an anti-fading dental scarf. The anti-fading dental scarf comprises a dental scarf body, the dental scarf is characterized in that a color fixing agent layer for preventing the dental scarf body from fading is coated on the dental scarf body in a rolling manner; the color fixing agent layer is coated with a PE (polyethylene) film with a waterproof effect; a plurality of magnetic sheets convenient for fixing the dental scarf body by magnetism are mounted on the dental scarf body. According to the dental scarf, the color fixing agent layer is coated on the dental scarf body in a rolling mode, the color moisture-proof treatment and fastness of dye on the dental scarf body are improved, meanwhile, the color fixing agent layer is wrapped with the PE thin film, the waterproof effect of the dental scarf body is improved, and therefore the anti-fading effect of the dental scarf body is further improved; the dental scarf body is directly fixed on the clothes through magnetism by utilizing the magnetic sheets, so that the dental scarf body can be conveniently fixed.

The invention belongs to the technical field of textile printing and dyeing, and particularly relates to a dyeing method of meta-aramid yarn. The dyeing method of the meta-aramid yarn comprises the following steps: dissolving an S-type or SE-type disperse dye and a dispersing agent in water to prepare a dye solution; in the meta-aramid yarn winding process, a single yarn is completely immersed in the dye liquor for contact, saturated adsorption is performed, and the meta-aramid yarn is wound into a loose cone yarn; carrying out high-temperature steaming fixation; the color-fixed cone yarn is put into a cone yarn dyeing machine to be subjected to reduction cleaning and normal-temperature water washing, the water-washed cone yarn is dehydrated and dried, dyed meta-aramid yarn is obtained, the dark color variety is subjected to redyeing through the dried yarn, and then the dyed meta-aramid yarn is obtained through steaming color fixing and aftertreatment. A disperse dye adopted for redyeing is an E-type disperse dye. The dyeing method of the meta-aramid yarn provided by the invention is low in cost, simple to operate, environment-friendly and high in production efficiency under the condition of normal temperature.

The invention discloses a synthetic method of a water-based polyurethane color fixing agent for nylon dyed by an acid dye, aiming at the property of nylon dyed by the acid dye, poly (butylene adipate-1000) and polyethylene glycol-1000 are mixed to prepare cationic water-based polyurethane, so that the dyeing percentage is increased, and the treated nylon has higher K / S value and color fastness; meanwhile, N, N-dimethyl-N, N-bis (2-ethoxyl) ammonium chloride is selected as a cationic chain extender of the waterborne polyurethane, compared with a traditional cationic chain extender, a neutralization procedure necessary for a traditional route is omitted, the risks of neutralization amount deviation, local acid excess and the like are avoided, and the production process is simplified.

The utility model relates to the field of flexible packaging materials, in particular to a compact composite type high-barrier linear easy-to-tear antibacterial nylon film and a composite film thereof. The tight composite type high-barrier linear easy-to-tear antibacterial nylon sequentially comprises an anti-sticking antibacterial layer, a first linear easy-to-tear nylon layer, a barrier layer, a second linear easy-to-tear nylon layer and a tight composite layer from outside to inside, the composite film sequentially comprises a tight composite type high-barrier linear easy-to-tear antibacterial nylon film layer, an adhesive layer and a heat sealing layer from outside to inside. According to the compact composite type high-barrier linear easy-to-tear antibacterial nylon film, a five-layer composite structure is adopted, various materials are laminated and combined, the advantages of the various materials can be integrated, and the performances are complementary; the composite film comprising the compact composite type high-barrier linear easy-to-tear antibacterial nylon film has good mechanical property, barrier property, antibacterial property, linear easy-to-tear property and excellent composite peel strength, and has a very wide application prospect.

The invention relates to the technical field of textile dyeing, and particularly discloses an energy-saving dip dyeing method for knitted fabric. An energy-saving dip dyeing method for a knitted fabric comprises the following steps: pretreatment: immersing the knitted fabric in a pretreatment solution, soaking at 30-50 DEG C, and then washing to obtain a pretreated knitted fabric; wherein the raw materials of the pretreatment liquid comprise the following components in parts by weight: 90-110 parts of deionized water, 1-5 parts of a surfactant, 0.5-2 parts of an electrolyte, 0.5-3 parts of a solubilizer and 0.5-2 parts of a softening agent; dyeing: putting the pretreated knitted fabric into a dye solution, soaking at 20-30 DEG C, taking out, washing with water, and carrying out heat setting to obtain a dyed knitted fabric; wherein dye in the dye liquid is prepared from the following components in parts by weight: 20 to 30 parts of reactive dye, 10 to 20 parts of penetrant, 5 to 15 parts of regulator, 10 to 20 parts of reserve salt and 0.1 to 1 part of buffering agent.

The invention provides a preparation method of a high-fastness electrostatic spinning nanofiber adsorption antibacterial functional fabric, and belongs to the technical field of textiles. The preparation method comprises the following steps: S1, dissolving a polymer and an antibacterial substance in an organic solvent to obtain a spinning solution; s2, performing electrostatic spinning on the fabric by using the spinning solution to obtain an antibacterial functional fabric deposited with nanofibers; s3, shaping the antibacterial functional fabric deposited with the nanofibers to obtain the nanofiber adsorption antibacterial functional fabric. Before shaping, the fabric is endowed with an antibacterial function through electrostatic spinning, the dosage of an antibacterial agent is reduced, the friction loss of nanofibers caused by the working procedures of spinning, dyeing and finishing, weaving and the like is avoided, the antibacterial performance of the electrostatic spinning endowed antibacterial fabric is improved, and product performance detection is stable and reaches the standard; a cross-linking agent is not needed, the binding strength of the nanofibers and the fabric is improved through shaping, the formula is environment-friendly, and the advantages that energy consumption is reduced, and sewage discharge is reduced are achieved; and the fabric is not selected, so that the fabric has material universality.

The invention discloses a preparation method of a simulation tree with an infrared stealth camouflage characteristic, and belongs to the technical field of infrared camouflage. The preparation method is used for solving the technical problems that in the prior art, a camouflage tree for military camouflage is poor in water resistance and acid-resistant color fastness, and the infrared stealth camouflage characteristic of a simulation tree needs to be further improved, and the preparation method of the simulation tree with the infrared stealth camouflage characteristic is provided. Comprising the following steps: heating and melting infrared simulation resin imitating the color of bark, and then coating the infrared simulation resin on the outer part of a simulation tree skeleton to form a simulation coating layer with the thickness of 20-30mm on the outer part of the simulation tree skeleton. By preparing the simulation tree skeleton coated with the glass fiber and coating the simulation tree skeleton with the infrared simulation resin, the highly similar simulation tree is prepared, the water-resistant and acid-resistant color fastness of the simulation tree is improved, the moisture absorption performance of the simulation tree is also improved, the transpiration of green vegetation leaves is simulated, and the simulation tree skeleton can be used as a simulation tree. The target is fused into the natural environment, and the infrared stealth effect is improved.