57results about How to "Improve physical strength" patented technology

The invention relates to the technical field of fiber fabrics, in particular to a negative ion antibacterial polyester fiber fabric and a preparation method thereof. The problems that a polyester fiber fabric is low in mechanical strength and poor in lasting antibacterial performance are solved. Synthetic raw materials of the anion antibacterial polyester fiber fabric comprise composite anion powder, a composite antibacterial agent, an improved dispersing agent, a coupling agent mixture, terephthalic acid, ethylene glycol and a catalytic promoter. Negative ions of the fabric can be continuously released by controlling the proportion and the particle size of the components in the composite negative ion powder; the continuous antibacterial ability of the fabric is improved by changing the dosage of the composite negative ion powder and the composite antibacterial agent; the bursting strength of the fabric is improved by preparing the mixture of the improved dispersing agent and the coupling agent; the wear resistance of the fabric is improved by controlling the parameter conditions of synthesizing the ethylene glycol terephthalate and the time and temperature of polycondensation; the elongation at break of the fabric is improved by controlling parameter conditions in the spinning process.

The invention relates to the technical field of fuel cells, in particular to a carbon fiber base material for a fuel cell, a preparation method of the carbon fiber base material, raw carbon paper and a preparation method of the raw carbon paper. The preparation method of the carbon fiber base material comprises the following steps: S1, adopting MFC or a mixture of MFC and pre-oxidized fiber pulp as reinforcing fibers, mixing the reinforcing fibers with water, and pulping to obtain premixed slurry; s2, uniformly mixing carbon fibers, the premixed slurry and a dispersing agent to obtain mixed slurry, molding the mixed slurry by adopting a wet molding process, and drying to obtain the carbon fiber base material. The MFC or the mixture of the MFC and the pre-oxidized fiber pulp is used as the reinforcing fiber, and the reinforcing fiber is pulped and then mixed with the carbon fiber and the dispersing agent to prepare the carbon fiber base material, so that the dispersity of the carbon fiber and the mechanical strength and conductivity of the carbon fiber base material in the wet forming process can be improved; and the negative influence on the subsequent preparation of the raw carbon paper is avoided.

The present invention relates to the technical field of cigars, and in particular to a cigar wrapper and binder and a preparation method thereof. The method uses biological enzymes to catalyze lignin cross-linking to prepare the wrapper and binder, and can prepare wrappers and binders of different colors by hot pressing at 80°C. The prepared cigar wrapper and binder are green, environmentally friendly and non-toxic, have strong physical properties, and have moisture-proof function.

The invention relates to the field of hygienic products, and discloses a macroporous super-breathable, dry and comfortable hygienic product and a preparation process thereof, and the macroporous super-breathable, dry and comfortable hygienic product comprises a macroporous non-gel composite non-woven fabric, a nano platinum antibacterial layer, intelligent super absorbent resin and a softened surface layer. A macroporous structure is introduced into the surface of the non-woven fabric, so that the absorption speed of liquid and the air circulation are obviously improved; the nano platinum antibacterial layer endows the product with efficient antibacterial performance, effectively inhibits the growth of bacteria, and improves the hygienic guarantee of a user; the intelligent SAP automatically adjusts the water absorption capacity according to the environment humidity, rapidly expands under the high-humidity condition, improves the water absorption efficiency, locks the liquid and prevents the liquid from permeating back; the surface layer subjected to softening treatment further improves the comfort and the skin-friendly property of the product, and skin friction is reduced. The product is suitable for baby diapers, female sanitary napkins and adult incontinence nursing products, excellent air permeability, dry and comfortable performance and antibacterial performance are provided, and the comfortable experience of a user is remarkably improved.

The invention discloses a polyurethane acoustic material as well as a preparation method and application thereof. Reaction raw materials of the polyurethane acoustic material comprise a component A and a component B in a weight ratio of 100: (58-70), wherein the component A is prepared from the following components in parts by weight: 40 to 60 parts of polyether polyol I, 20 to 40 parts of polyether polyol II, 10 to 20 parts of polycarbonate polyol, 0.2 to 0.9 part of a cross-linking agent, 0.2 to 0.45 part of a surfactant, 0.3 to 0.8 part of a catalyst I, 0.3 to 0.8 part of a catalyst II, 0.05 to 0.5 part of a catalyst III, 3.8 to 4.8 parts of water and 0 to 1 part of color paste; and the component B is combined modified MDI. The polyurethane acoustic material provided by the invention can achieve the effects of high strength, difficulty in cracking and difficulty in debonding with a motor shell, and can be applied to wrapping of a driving motor of a new energy electric vehicle.

The present invention relates to a negative electrode active material, comprising M a Si b C-based metal-silicon-carbon particles, wherein the M a Si b M in the C matrix is ​​at least one selected from the group consisting of Li, Mg, Na, Ca and Al, 0.3≤a≤1 and 1≤b≤2. a Si b C matrix, the formation of irreversible phases during charge and discharge of the battery can be minimized, so that the initial efficiency of the battery can be improved, and the capacity and life characteristics of the battery can be improved due to improved conductivity, physical strength and chemical stability.

The vamp with the protective property and the air permeability comprises a vamp body, a plurality of TPU yarns are woven in an interweaving mode to form at least one TPU yarn arrangement layer, the TPU yarns are fixedly connected at the overlapping position in a hot melting press fit mode, and the TPU yarns are arranged on the vamp body. Breathable winding gaps are formed among the woven TPU yarns; a protective layer is compounded on the side, close to the foot, of the vamp body, the protective layer is formed by weaving materials with puncture resistance and cutting resistance, and the protective layer is provided with a breathable grid structure. According to the vamp with the protective property and the air permeability and the shoe, the vamp material with the protective property and the air permeability is adopted for the shoe, the effects of being simple in structure, good in air permeability and having the protective function are achieved, and safe, comfortable and healthy wearing experience is provided for a wearer.

The invention provides a preparation method of a solid electrolyte membrane. The preparation method of the solid electrolyte membrane comprises the following steps: crushing and screening electrolyte raw materials to obtain electrolyte particles; dissolving the electrolyte particles into a solvent, and uniformly mixing to obtain electrolyte slurry; carrying out refining treatment on the electrolyte slurry to obtain refined powder; and carrying out rolling treatment on the refined powder to obtain the solid electrolyte membrane. According to the preparation method of the solid electrolyte membrane, the preparation process is simplified, the production cost is reduced, and the production efficiency is improved. The electrolyte slurry is refined by optimizing the process conditions for preparing the electrolyte powder, so that the ionic conduction performance and the stability of the electrolyte membrane are ensured; and meanwhile, the preparation process is green and environment-friendly and has huge industrial application potential.

The present application relates to a kind of biodegradable dark color mulch and its preparation method, and dark color mulch is made of cellulose, hemicellulose and degradable coating.The manufacturing method includes the preparation of dark color mulch substrate, coating layer coating.It specifically includes slurry compounding, beating, additive addition, is formed by papermaking, dehydration, pre-drying, coating, sizing, drying, calendering, product after drying.The local film has good wet strength, light resistance, weather resistance, heat preservation and entropy increasing effect.The results of farmland degradation experiment show that the mulch can be biodegraded after 50~60 days, and the biodegradation rate is more than 90%.

The invention discloses a high-performance composite capacitor base film and a preparation method thereof, the method comprising the following steps: step 1, mixing polyester masterbatch and composite reinforced modified particles to obtain an extrusion masterbatch; step 2, melt extrusion, cooling, and casting; step 3, preheating the cast sheet and performing longitudinal stretching; step 4, preheating, performing transverse stretching; step 5, shaping treatment, and finally cooling, winding, and trimming to obtain a high-performance composite capacitor base film. The invention adopts PEN and PET compound as polyester masterbatch, which can improve the mechanical strength and heat resistance of the base film. The composite reinforced modified particles in the invention adopt acid-modified carbon nanotubes and nano-SiO2 as the main reinforcing fillers, and compound nano-alumina and reduced carbon dots to form a special three-dimensional network structure, which can comprehensively improve the mechanical strength, heat resistance and oxidation resistance of the base film, improve the application effect of the base film, and extend its service life.

The invention provides biomass cotton cellulose based on waste cotton textiles and a preparation method thereof, and the method comprises the following steps: crushing the waste cotton textiles, sterilizing, disinfecting, drying, dipping in alkali liquor and cooking, adding a DES eutectic solvent, mixing, pulping the obtained material, bleaching, desanding, concentrating and papermaking to obtain the biomass cotton cellulose. Wherein a metal chlorate catalyst and an auxiliary agent are added during cooking. According to the method, the waste cotton textile is adopted as a raw material, and the cotton cellulose with excellent performance is prepared by performing high-added-value recovery on the waste cotton textile, so that the environmental problem caused by the waste cotton textile can be effectively relieved, and the resource waste is reduced. Meanwhile, the production cost of the cotton cellulose can be reduced, and the problem of insufficient production raw materials of existing biomass cellulose products is solved.

The invention provides a GI gas valve guide sleeve pressure testing tool which is suitable for the technical field of the diesel engine manufacturing industry, and aims to provide the GI gas valve guide sleeve pressure testing tool which adopts the scheme that the GI gas valve guide sleeve pressure testing tool comprises a pressure testing flange, a pressure testing shaft body, a limiting mechanism, a fixing hole, a bolt and a nut, a pressure testing shaft body is connected in the pressure testing flange in a penetrating mode, limiting mechanisms are fixedly installed on the surface of the pressure testing flange and the upper surface of the pressure testing shaft body, and by installing the pressure testing flange, the pressure testing shaft body, the limiting mechanisms, fixing holes, bolts and nuts, the GI gas valve guide sleeve pressure testing tool is designed into a split type. The tool can be independently purchased according to the loss condition in the using process, the maintenance cost is reduced, meanwhile, the tool is simple in structure and convenient to install and operate, and the production efficiency can be improved; the invention is also suitable for the field of diesel engine manufacturing industry.

According to the present invention, the method for preparing a plasma-resistant coating film includes: step a, coating the powder of a first rare earth metal compound on a coating object by a physical vapor deposition process to form a lower coating; step b, transferring the powder of a second rare earth metal compound; and step c, spraying the transferred powder of the second rare earth metal compound onto the lower coating formed in step a to form an upper coating, thereby obtaining a plasma-resistant coating film with fewer structural defects and enhanced physical properties.

The utility model discloses a film surface acoustic wave resonator and a film surface acoustic wave filter, and relates to the field of semiconductor devices, at least one intermediate layer is inserted into at least one dielectric layer of the film surface acoustic wave resonator, so that the physical strength of the dielectric layer inserted with the intermediate layer can be improved, and the relatively thin dielectric layer has a relatively good fracture prevention effect; and for the relatively thick dielectric layer, the middle layer can help to improve the flatness and the surface smoothness in the material growth or sputtering process, so that the relatively thick dielectric layer can avoid relatively large roughness in the forming process. And the thickness of each inserted middle layer is less than 0.2 lambda, so that the propagation of a main acoustic mode is not directly influenced, but for other miscellaneous modes, due to the difference of acoustic propagation paths, reflection is generated at the positions of the middle layers to a certain extent, so that the resonance condition of the miscellaneous modes is destroyed, and the energy dissipation is reduced. And the energy is further limited in the reflection region, so that the Q value of the resonator can be further improved.

The utility model provides a handheld cement paving device, which is applicable to the technical field of cement paving, and adopts the scheme that the handheld cement paving device comprises a mounting rod, a protective shell, a handheld hole, a rotating roller, a rotating rod, a trowelling rod and a driving motor, the protective shell is fixedly connected to the bottom of the mounting rod, the handheld hole is formed in the surface of the protective shell, and the rotating roller is fixedly connected to the bottom of the mounting rod. The inner wall of the protective shell is rotatably connected with a rotating roller, one side of the rotating roller is provided with a rotating rod, the rotating rod rotates on the inner wall of the protective shell, the bottom of the rotating rod is fixedly connected with a trowelling rod, and the inner wall of the protective shell is fixedly provided with a driving motor. A driving motor drives a rotating roller to rotate to compact the cement pavement, and meanwhile, a trowelling rod is driven to rotate to trowelling the cement pavement, so that the convenience of cement paving is improved; the utility model is also suitable for the field of cement paving.

The present invention relates to a forming method and forming equipment of a ternary composite reconstructed tobacco sheet, which includes a primary coating composite device, a primary stripping conveying device, a secondary coating composite device and a secondary stripping conveying device. The method firstly coats a tobacco mixture on a first conveying surface by coating composite to form a strip-shaped pulp sheet, and then covers a fiber mesh substrate on the surface of the strip-shaped pulp sheet under a condition of low tension to form a strip-shaped binary composite reconstructed tobacco sheet; then coats the tobacco mixture on a second conveying surface, and covers the strip-shaped binary composite reconstructed tobacco sheet on the surface of the strip-shaped pulp sheet under a condition of low tension to form a ternary composite reconstructed tobacco sheet. The middle layer of the reconstructed tobacco sheet produced by the present invention is a prefabricated strip-shaped fiber mesh substrate, and the upper and lower layers are tobacco powder mixtures, which can improve the coating rate, improve the tobacco taste, improve the consistency of the finished product, improve the tensile strength, reduce the thickness, and enhance the processing resistance.

The invention provides a GI fuel gas middle block positioning tool which is suitable for the technical field of diesel engine manufacturing, and aims at providing the GI fuel gas middle block positioning tool which comprises a cylinder cover body, supporting columns, a fuel gas middle block, a first mounting plate, a second mounting plate and a third mounting plate. A gas middle block and a first mounting plate are arranged above the cylinder cover body, a second mounting plate and a third mounting plate are fixedly connected to the upper surface and the lower surface of the first mounting plate, and the gas middle block is conveniently positioned and mounted in the cylinder cover body by mounting the cylinder cover body, the supporting columns, the gas middle block, the first mounting plate and the second mounting plate; the positioning tool is easy to install and operate, and the production efficiency can be improved; the invention is also suitable for the field of diesel engine manufacturing.

The utility model provides an exhaust filtering device for a coating production line, which is suitable for the technical field of coating production lines, and adopts the scheme that the exhaust filtering device for the coating production line comprises an exhaust mounting shell, a protective shell, a reciprocating mounting shell, a support rod and a transmission mounting shell, a reciprocating mounting shell is arranged in front of one side of the exhaust mounting shell; by installing the exhaust installation shell, the protective shell, the reciprocating installation shell, the supporting rod, the transmission installation shell, the rotating base, the driving motor, the first chain wheel and the second chain wheel, when the driving motor drives the impeller to rotate for exhaust, the first chain wheel and the second chain wheel are driven to rotate, and the cleaning roller is controlled to clean the filter screen body; the convenience of the exhaust filtering device is improved; the device is also suitable for the field of coating production lines.

The utility model relates to a pipe wrench with an improved structure for a pipeline, and relates to the technical field of pipe wrenchs.The pipe wrench comprises a first assembling shell and a second assembling shell, one side of the first assembling shell is slidably connected with a moving block, and the moving block is opposite to the second assembling shell; and a moving assembly for driving the moving block to move is arranged in the first assembling shell, a clamping device is arranged between the moving block and the second assembling shell, and the moving block and the second assembling shell are provided with a quick-release limiting assembly relative to the clamping device. The pipe wrench has the beneficial effects that an operator can conveniently clamp a pipeline through the pipe wrench, and the clamping part of the pipe wrench can be conveniently and rapidly replaced.

The invention discloses a nylon 66 melt impurity removal process which comprises the steps of raw material pretreatment, solvent extraction, airflow impurity removal, catalyst impurity removal, vacuum degassing, centrifugal separation, physical filtration, removal of tiny solid impurities in a melt through a filter screen, cooling and quality detection. Impurities in the nylon 66 melt are comprehensively removed in a physical mode, a chemical mode and other modes, low-molecular-weight impurities, oxides, unreacted monomers and catalyst residues in the nylon 66 melt can be remarkably removed, and the purity of the melt is improved.

The utility model relates to the field of packaging, in particular to a dried orange peel storage packaging bag which comprises a packaging bag body, and the packaging bag body comprises a packaging bag front piece and a packaging bag rear piece. The two sides and the bottom of the packaging bag front piece are fixedly connected with the two sides and the bottom of the packaging bag rear piece through heat sealing to form sealing edges, and the top of the packaging bag body is provided with a leakage-proof sealing strip. The packaging bag front piece and the packaging bag rear piece are both bamboo-based packaging materials made of bamboo fibers, each bamboo-based packaging material comprises a body paper layer and a barrier coating, the body paper layer is a base material, and the two sides of the body paper layer are coated with the barrier coatings through a spraying process. The packaging bag body is made of the bamboo-based packaging material, the growth speed of bamboos is high, the bamboos are renewable resources, the influence of planting and felling on the environment is small, the concepts of green packaging and sustainable development are met, and the requirement of the packaging material for environment friendliness and sustainability is met; bamboo is widely distributed globally, resources are sufficient and easy to obtain, and compared with limited forest resources, bamboo supply is more stable.

The invention discloses a high-frequency defibering-air flotation synergistic waste paper fine screening residue complete recycling system and method, and belongs to the technical field of waste paper pulping and solid waste recycling. According to the system, through a high-frequency defibering unit, an air flotation separation unit, a fiber recovery unit and a slag discharge energy regeneration unit which are sequentially connected in a closed loop mode, complete recycling of fine screening slag is achieved. The method comprises the following steps: carrying out high-frequency defibering on fine screening slag slurry at a specific low concentration (0.5%-1.1%); controlling the slag discharge rate of the air flotation separation unit to be 10-20%, and separating out clean slurry and high-calorific-value scum; concentrating and recycling the clean slurry; and the dehydrated scum is converted into biomass solid fuel with a calorific value of not less than 20MJ / kg or is pyrolyzed to produce gas. According to the invention, a complete industrial closed loop from'waste residue 'to'resource' is formed, efficient recovery (more than or equal to 80%) of fibers, deep removal (more than 90%) of large stickies and energy utilization of scum are synchronously realized, and the problem of treatment and disposal of terminal waste residue in the traditional process is solved.

The application discloses a kind of ancient ship rotten wood protection repair method, for the pine, fir, camphor wood on ancient ship, after the oxidation-reduction reaction of iron and the oxidation of reduced state sulfur, cause the degradation and rotten of wood, with micro-nano lime and ethyl cellulose deacidification reinforcement;For the crack and incomplete parts of ancient ship, make into imitation wood grain paste with tung oil etc. and fill the vacancy;For broken wood block, make into rotten wood adhesive with tung oil etc. and bond;For the ancient ship protection after repair, use fluorine rubber as sealing agent, provide a good environment for cultural relics, achieve waterproof, mildewproof, insect prevention and other effects.The method of the application replaces the traditional polyethylene glycol penetration spray method, rosin paraffin hot infiltration method, polyvinyl alcohol, polyethylene glycol penetration reinforcement, spraying raw tung oil, raw lacquer, B72 and epoxy resin and other protection methods, and uses fluorine rubber as ancient ship sealing agent, achieves the purpose of traditional and modern material combination of cultural relic protection "repairing old as old, minimal intervention".

The present invention relates to a compact molded case circuit breaker with a thermal magnetic adjustable alarm and non-tripping function, comprising a base, a contact arc extinguishing module, a middle cover, an operating mechanism, an upper cover, a controller cover, an overload adjustable alarm and non-tripping current protection module and a terminal assembly, wherein the overload adjustable alarm and non-tripping current protection module is matched with the operating mechanism, and when the current exceeds a certain multiple of the rated current, the overload adjustable alarm and non-tripping current protection module sends an overload alarm signal; when a short-circuit current occurs in the circuit, the overload adjustable alarm and non-tripping current protection module directly acts to push the operating mechanism to trip the circuit breaker and disconnect the circuit. Compared with the prior art, the circuit breaker has a compact structure and can realize short-circuit protection, overload alarm and adjustable functions.

The application belongs to the technical field of papermaking, and particularly relates to a method for preparing environment-friendly decorative base paper with high water absorption and low air permeability by using bamboo pulp fibers, which comprises the following steps: S1, preparing wet pulp; S2, mixing pulp; S3, preparing base paper; S4, preparing coating; and S5, paper surface coating treatment. The decorative base paper prepared by the method for preparing environment-friendly decorative base paper with high water absorption and low air permeability by using bamboo pulp fibers has the advantages of low filler content, high physical strength, good water absorption and low air permeability.

The invention relates to the technical field of preparation of specialty paper, and discloses ultrathin vulcanized fiber paper for a high-frequency copper-clad plate and a preparation method of the ultrathin vulcanized fiber paper. The preparation method comprises the following steps: mixing cotton fibers and water, pulping, adding an organic solvent, injecting a glucosyl-terminated aramid solution, carrying out in-situ precipitation, and separating out a product to obtain a cotton fiber-aramid deposited fiber compound; dispersing the cotton fiber-aramid fiber deposition fiber compound into water, and sequentially performing papermaking, drying, zinc chloride solution gelling, desalting and drying. The aramid fibrid is introduced into the vulcanized fiber paper with the cotton fiber as the base material in a special mode, the strength of the vulcanized fiber paper can be improved to a greater extent, and therefore the vulcanized fiber paper can achieve enough physical strength under the small thickness.

The present invention belongs to the technical field of potting glue, and in particular to a high-adhesion organosilicon electronic potting glue and a preparation method thereof. The following raw materials are included: α, ω-dihydroxy polydimethylsiloxane, dimethyl silicone oil, hydroxy silicone oil, methyl triacetoxysilane, ethyl triacetoxysilane, white oil, dibutyltin diacetate, fumed silica, methacryloyloxypropyl caged polysilsesquioxane, octahydrogen caged polysilsesquioxane, platinum complex catalyst, inhibitor, acidic ion exchange resin and activated carbon. The present invention completes the hydrosilylation reaction by octahydrogen caged polysilsesquioxane and methacryloyloxypropyl caged polysilsesquioxane, thereby introducing a multifunctional caged polysilsesquioxane material into silicone rubber, so that the interaction force between the potting glue and the substrate is greatly enhanced, and the adhesion is thus significantly improved.

The utility model provides a cement base surface paving device, which is suitable for the technical field of cement base surface paving, and adopts the scheme that the cement base surface paving device comprises a movable platform, a first pulley block, a second pulley block, a connecting seat and a linkage rod, the first pulley block and the second pulley block are symmetrically and rotatably connected to the inner wall of the movable platform, and the linkage rod is arranged on the connecting seat. A connecting base is fixedly connected to one side of the movable platform, a linkage rod is rotationally connected to the surface of one side of the connecting base, by installing the movable platform, the first pulley block, the second pulley block, the connecting base and the linkage rod, the linkage rod can be driven by the motor body to rotate, the cement base surface is troweled, meanwhile, the troweling rod is conveniently replaced and maintained, and the construction efficiency is improved. The convenience of the paving device is improved; the utility model is also suitable for the field of cement base surface paving.