342results about How to "Improve breaking strength" patented technology

The invention discloses a novel infrared and radar integrated stealth fabric and a preparation method thereof. The stealth fabric comprises an infrared camouflage surface layer and an antistatic bottom layer in turn from outside to inside; the infrared camouflage surface layer comprises an infrared stealth layer, a fabric layer and a radar wave absorption attenuation layer in turn from outside toinside; the infrared stealth layer is compounded by using a coating coated by an infrared stealth coating and a magnetron sputtering ITO (indium tin oxide) film arranged on the surface of the coating; the radar wave absorption attenuation layer comprises a sponge body; and a wave absorption material is adsorbed on the sponge body. The stealth fabric can realize radar stealth function and infraredstealth function at the same time, has good integral wave absorption effect and low surface density of materials, and has good effects on the aspects of breaking strength, bursting strength and the like. Moreover, excessive complex processes are not adopted for manufacturing the stealth fabric, and the stealth fabric can be produced by using a conventional fabric production method, so the stealthfabric is convenient for production and easy for implementation.

The invention discloses a continuous preparation method of activated carbon fiber cloth with high breaking strength and elongation at break, which comprises the following steps: (a) providing polyacrylonitrile oxidized fiber cloth; (b) providing a heat treating furnace which comprises at least four reaction regions and is provided with a feeding mechanism and a discharging mechanism; (c) providingactivated gas vapor and carbon dioxide; and (d) enabling the polyacrylonitrile oxidized fiber cloth to carry out the carbon activating reaction. The invention is characterized in that the feeding mechanism and the discharging mechanism are used for controlling the meridional overfeeding amount of the polyacrylonitrile oxidized fiber cloth in the carbon activating process to be 15-40%.

The invention provides a method for improving antibacterial property of wool by a bio-enzymatic method, which belongs to the field of textile biotechnology. The method utilizes the catalysis of transglutaminase (MTG) to graft some natural compounds which contain primary amine groups and have antibacterial property onto wool to improve the antibacterial property of the wool. The method comprises the following process flows: wool pretreatment, treatment with an MTG-containing antibacterial finishing agent, washing and drying. Wool yarn or fabric treated by the method not only has improvement on the antibacterial property but also correspondingly has improvement on some other properties and particularly has great improvement in low-temperature dyeing property. Meanwhile, the method improves the strength of the wool yarn or the fabric, thereby playing a role in restoring strength. The strength-restoring function is an outstanding advantage of the method compared with other antibacterial finishing agents or antibacterial finishing processes. In addition, compared with chemical finishing, the treatment process of the method is free from pollution, healthier and friendlier to environment by adopting a bio-enzyme technique.

A method for improving flame retardance of wool by bioenzyme treatment is disclosed, belonging to the field of textile biotechnology. The invention utilizes a catalytic action of transglutaminase (MTG) to graft a type of compounds containing primary amino groups and a large number of phosphorus elements onto the wool so as to improve the flame retardance of the wool, the technological procedures comprise: pretreatment, treatment with a phosphoric finishing agent containing the MTG, water rinsing and drying. Wool yarns and fabrics treated by the inventive technology can not only be improved in the flame retardance, but also be enhanced in some other performances to a certain extent, in particularly the strength of the wool yarns and the fabrics is enhanced to play a role of powerful repair, which is outstandingly superior to other flame-retardant finishing agents or flame-retardant finishing technologies. In addition, in contrast to chemical finishing, the invention is healthier and more environmentally-friendly due to the employment of bioenzyme technique and the pollution-free treatment technology.

The invention discloses a wear-resisting high-strength cable produced by a non-single material and a preparation method of the wear-resisting high-strength cable. A cable body is an 8-strand structure core body which is prepared from ultra-high molecular weight polyethylene (UHMWPE) and high-strength polyester according to the amount ratio of 3 to 1; a high-toughness wear-resistant coating woven by adopting vectran fibers is arranged outside the core body; and a wear-resistant coating which is especially made of a wear-resistant material PTFE as a matrix coats the outer surface of the sleeve; the preparation method comprises the following steps: fabricating a cable body by the procedures of preparing roving, preparing rope yarns, infiltrating resin, preparing rope strands, braiding ropes, prestretching and drying; weaving a high-strength wear-resisting sleeve on the surface of the core body; and dipping and coating a wear-resisting coating which is especially prepared from PTFE as a matrix on the outer layer of the sleeve.

The invention discloses an acrylic fiber and viscose (cotton) fiber apposition dyeing method relating to the technical field of blended yarn weaved fabric dyeing. The method comprises the following steps: (1) performing apposition dyeing pretreatment; (2) performing apposition dyeing; and (3) performing apposition dyeing post-treatment. The method has the advantages of simple production process, stable process control and energy conservation, and the related problems in the prior art can be solved.

The invention relates to an impregnating compound special for single-filament plastic coated yarn and a preparation method thereof. The impregnating compound is prepared mainly by a main film former including water-solubility polyurethane and epoxy resin emulsion, and an assistant film former including water-solubility epoxy resin, as well as a coupling agent, a lubricating agent, a pH value adjusting agent and deionized water. The preparation method comprises the following steps: hydrolyzing the coupling agent in the deionized water; diluting the lubricating agent, and adding the diluted lubricating agent into the hydrolyzed coupling agent for stirring; adding the water-solubility polyurethane, the epoxy resin emulsion and the water-solubility epoxy resin for continuously stirring; and adding the deionized water and stirring uniformly. In the invention, the water-solubility polyurethane and the epoxy resin emulsion are taken as the film formers, so that the impregnating compound has the advantages of simple preparation process and low cost; and glass fiber yarn produced by the impregnating compound has extremely high breakage resistance and smaller fur containing amount, and the strength and the production efficiency of products are improved greatly, so that the impregnating compound is more suitable for promotion and application.

The invention discloses a polypropylene non-woven fabric and a preparation method thereof. The polypropylene non-woven fabric is prepared by taking polypropylene resin prepared from polypropylene non-woven fabric recycle material as the raw material and adding a molecular weight regulator, wherein the quantity of the molecular weight regulator is 0.1%-0.3% of the gross of the polypropylene resin. The polypropylene non-woven fabric is pliable, tough and light and has good flexibility, breathability and small residual deformation. The invention takes good advantages of the recycle material of polypropylene non-woven fabric, thereby saving resources and protecting the environment; and the prepared polypropylene non-woven fabric is a recyclable and environmentally friendly product which not only fits the development thougtht of circular economy, but also has low production cost and excellent product performance.

The invention discloses a hemp composite filter material and its preparation method. The method comprises the following steps: 1, mixing a hemp fiber with a viscose fiber, and then sequentially carrying out steps of opening, carding, lapping, drafting, spunlace and drying to obtain a hemp/viscose spunlaced non-woven; and 2, preparing a nanometer fiber layer on the hemp/viscose spunlaced non-woven through electrostatic spinning to obtain the hemp composite filter material. The composite filter material provided by the invention is a two-layer composite material comprising the micrometer-diameter hemp/viscous spunlaced non-woven and the nanometer-diameter fiber, wherein the hemp/viscous spunlaced non-woven has the advantages of good physical performances, good permeability, small thickness and proportion, large breaking strength and good wear resistance; and a comparison between the base cloth of the hemp/viscous spunlaced non-woven and the two-layer composite filter material disclosed in the invention in filter performance and bore diameter indicates that the two-layer composite filter material provided by the invention has a better filter effect.

The invention relates to a carbon fiber bilayer plastic wrapped steel rope specially used for an elevator and belongs to the technical field of elevators. The carbon fiber bilayer plastic wrapped steel rope specially used for the elevator is provided with a carbon fiber rope core, wherein a synthetic plastic inner protective layer is wrapped outside the carbon fiber rope core; a suction disc which is densely covered by ranks of micro ridges and slots is wrapped outside the inner protective layer; a braided steel wire rope is arranged outside the suction disc, and a synthetic plastic shell is extruded and wrapped outside the steel wire rope. The carbon fiber bilayer plastic wrapped steel rope disclosed by the invention has a scientific and reasonable structure; an intermediate sizing rope core adopts a carbon fiber plastic wrapped rope; a plastic wrapped surface imitates the mode of the suction disc of a wall gecko, and the suction disc which is densely covered by ranks of micro ridges and slots is arranged, so as to enhance the binding ability of the carbon fiber bilayer plastic wrapped steel rope with other materials; the shell is wrapped by the synthetic plastic; and the tensile strength of the carbon fiber resin composite material is 3500MPa or above and is 7-9 times that of a steel wire while the weight of the carbon fiber resin composite material is one fourth of the weight of the steel wire of the same class, thus the carbon fiber bilayer plastic wrapped steel rope disclosed by the invention has a prospect in application of the elevator and is a replacement product of an elevator hoisting rope.

The invention relates to an auxiliary agent in the printing and dyeing industry, in particular to a surface finishing auxiliary agent for fabric. An anti-pilling finishing agent for the fabric is nonionic macromolecular polymer, and is characterized in that the anti-pilling finishing agent for the fabric is formed by copolymerizing 10 to 20 portions of high-hydro silicone oil, 30 to 50 portions of polyurethane prepolymer and 30 to 50 portions of polypropylene ester copolymer under the conditions of catalyst and heating; and the portion is weight portion. The fabric anti-pilling finishing agent is suitable for various fibers and fabrics; and in particular, polyester fabric treated by the anti-pilling finishing agent has basically unchanged tone and handfeel, improves the fastness to washing and light fastness, greatly improves the antistatic performance, has certain dust resistance and obviously improves the anti-pilling performance.

The invention provides an ink-jet printing pretreatment agent which is prepared from sodium bicarbonate, urea, polyacrylamide and water. The mass ratio of the urea to the sodium bicarbonate to the polyacrylamide is (1-10) to 1 to (0.5-5); the mass concentration of the polyacrylamide in the ink-jet printing pretreatment agent is 0.1-3%. When a silk fabric is treated by using polyacrylamide as a surface treatment agent, the color shade and the vividness are increased, the apparent color depth K/S value of the printed fabric is improved, the width of printed lines is smaller (namely the anti-seepage effect is better), the permeability of dye molecules on the fabric is reduced, the breaking strength is slightly increased, and the color fastness index is almost unchanged. That is, the polyacrylamide as the pretreatment agent can not only improve the utilization rate of the dye molecules, but also effectively improve the image effect of ink-jet printing, the improvement of the technical level of ink-jet printing is facilitated. The invention also provides a surface pretreatment method of the silk fabric.

The invention discloses a polyurethane urea rubber composite elastic fiber and a preparation method thereof. According to the preparation method, a butadiene-acrylonitrile rubber material and polyurethane urea are uniformly mixed through a solution blending mode, lots of strong-polarity nitrile groups are introduced into the fiber, and the interaction force of the polymer molecular chain is increased, so that the fiber has high-temperature resistance and alkali and chemical corrosion resistance. Moreover, the operations of vulcanization cross-linking and stock solution fiber forming are simultaneously finished through a low-temperature low-speed spinning process, the limiting effect on the soft segment of polyurethane urea is increased by utilizing a mico-crosslinking network structure formed by a rubber phase in the fiber forming process, and the mechanical strength and thermal stability of the fiber are further improved.

The invention discloses a preparation method of a stable basalt continuous fiber impregnating compound. The impregnating compound is a mixed emulsion prepared from a film-forming agent, a coupling agent, a lubricant, a PH modifier and water, wherein the film-forming agent serves as the main component. The preparation method comprises the following steps: diluting the film-forming agent by using the water, then adding the coupling agent, the lubricant and the like, fully mixing the components, and then performing stirring to obtain a finished impregnating compound product. The stable basalt continuous fiber impregnating compound is mainly used for a coating of a basalt fiber, has high impregnability and stability, and also has the functions of improving the bundling and the abrasion resistance of the basalt fiber; the mechanical property of the basalt fiber can be improved, and the breaking strength, the tensile property and the shear strength are improved.

The invention discloses a method for finishing an environment-friendly flame-retardant waterproof coating fabric, comprising the following steps of: preparing a polyester fabric, carrying out pretreatment of water repellence, finishing a coating, carrying out after-treatment of water repellence and producing a finished product. The flame retardant adopted by the method is a layered anion inorganic magnesium-aluminium hydrotalcite which is similar to the magnesium hydroxide and the aluminum hydroxide in structure and composition. The layered anion inorganic magnesium-aluminium hydrotalcite can release a large amount of water and carbon dioxide after being heated to decompose and absorb a large amount of heat at the same time so that the temperature of a combustion system is reduced. The water vapour and the carbon dioxide released after the layered anion inorganic magnesium-aluminium hydrotalcite is heated to decompose have the functions of diluting and blocking combustible gases. The aluminum and magnesium oxides generated from thermal decomposition and the carbide formed during the combustion of polymer materials can form a protective film on the surface of the material so that the further intrusion of oxygen is blocked and the flame-retarding effect is achieved. The solid product generated from the decomposition of hydrotalcite particles has a very large specific surface area and strong alkalinity and can absorb the acidic gases and the smoke released during the thermal decomposition of the material to fulfill the function of suppressing and abating smoke.

The invention discloses an anti-wrinkle antibiotic finishing agent as well as a preparation method and application thereof. The anti-wrinkle antibiotic finishing agent comprises 0.8-2.6wt% of azelaic acid, 1.6-3.2wt% of sodium hydrogen phosphate, 2.5-4wt% of carboxymethyl chitosan, 3.3-5.6wt% of hydroxypropyl-beta-cyclodextrin, 3-6wt% of a perilla frutescens ethyl acetate extract, 3.5-7wt% of a rhizoma kaempferiae ethanol extract, 6-12wt% of polyglycerol monooleate and the balance of water. The preparation method comprises the following steps: (1) preparing the perilla frutescens ethyl acetate extract; (2) preparing the rhizoma kaempferiae ethanol extract; and (3) mixing and stirring the components according to the percentage by weight, and shearing, thereby obtaining the anti-wrinkle antibiotic finishing agent. The anti-wrinkle antibiotic finishing agent has the advantages of good anti-wrinkle effect, good antibiotic effect and wide application range.