26results about How to "Improve surface strength" patented technology

The invention relates to a production process of a high-elasticity heat-resistant polyester yarn, which comprises the following steps: firstly, selecting high-molecular-weight polyethylene glycol terephthalate, adding 1-3% of nano filler and 5-10% of functional copolymer, and drying at 150 DEG C for 4-6 hours to improve the stability and processability of the material; secondly, melt extrusion is conducted at 280-290 DEG C, spinning is conducted through a multi-section temperature control spinning head, and the fiber cooling uniformity is effectively controlled. Then, two times of drafting and a heat setting process are adopted, the orientation degree of a molecular chain is improved in one time of drafting, and low-temperature plasma treatment is combined to optimize the surface activity and the setting effect of the fibers. In the secondary drafting, the fiber deformation is finely adjusted at low temperature, the thermal damage is reduced, the elasticity is improved, and finally, xylanase treatment and ultraviolet curing are combined, so that the softness, the skin-friendly property and the weather resistance of the fiber are remarkably improved.

The utility model discloses an explosion-proof oil-immersed current transformer, which belongs to the technical field of oil-immersed current transformers and comprises an insulating porcelain bushing, a flange A is mounted at the bottom end of the insulating porcelain bushing, an expander is mounted at the top end of the insulating porcelain bushing, an oil tank is mounted at the bottom of the flange A, a flange B is mounted at the top of the oil tank, and the flange B is mounted at the bottom of the oil tank. And two sides of the outer wall of the flange B and two sides of the outer wall of the flange A are respectively provided with an annular sealing element. The structure is reasonable, through the arrangement of the annular sealing elements and the protective coating mechanism, the flange B on the oil tank is assembled on the flange A below an insulating porcelain bushing on the oil-immersed current transformer, and the oil-immersed current transformer is assembled on the oil tank through the annular sealing elements; and the annular sealing element is matched with the sealing ring A and the sealing ring B to seal the flange A and the flange B, so that leakage at the mounting position of the oil tank and the insulating porcelain bushing after mounting is avoided as much as possible, the sealing aspect is guaranteed, and the possibility that the oil-immersed current transformer is easy to explode is effectively reduced.

The invention discloses a light reinforced perovskite solar cell module and a production process thereof, and relates to the technical field of solar cells, and the light reinforced perovskite solar cell module structurally comprises a high-transmittance epoxy resin adhesive protection layer, a substrate, a perovskite cell layer, an adhesive film layer and a back plate which are sequentially stacked. The peripheries of the substrate, the perovskite cell layer, the adhesive film layer and the backboard are sealed. According to the perovskite solar cell module, the epoxy resin adhesive protection layer is arranged on the light incident surface of the perovskite solar cell module, so that the inner-layer substrate can be effectively protected, heat transfer can be effectively blocked by utilizing the heat insulation characteristic of the epoxy resin adhesive protection layer, and the purposes of reducing the overall temperature of the module and relieving the thermal decomposition of perovskite are achieved; therefore, the service life of the perovskite solar cell module is prolonged.

The invention discloses a starch-based surface sizing agent as well as a raw material composition, a preparation method and application thereof. The starch-based surface sizing agent comprises the following raw materials in parts by weight: 30-70 parts of a hard monomer, 20-60 parts of a soft monomer, 11-6 parts of a functional monomer, 22-10 parts of a functional monomer, 0.5-3.0 parts of an acid catalyst, 70-90 parts of native starch, 5-20 parts of polyol and 3-7 parts of an initiator. According to the invention, through the reaction of the polyhydric alcohol and the native starch, the surface strength of the raw paper can be greatly improved, meanwhile, linting and dusting are reduced, and the sizing degree, smoothness and printability of paper can be effectively improved. And during monomer graft copolymerization, functional monomers are introduced, so that the Cobb value of raw paper can be obviously improved while the cross-linking capability of the surface sizing agent and paper pulp fibers is further improved. According to the invention, modified starch is replaced by native starch, and polyhydric alcohols and functional monomers are added, so that the product can be applied to paper pulp with different qualities, and the water resistance of paper is obviously improved.

This invention discloses a sulfonated polyether ether ketone (PEEK) water-lubricated bearing material doped with whisker carbon nanotubes and its preparation method, belonging to the field of polymer materials technology. The method includes steps such as whisker carbon nanotube dispersion, doping with whisker carbon nanotubes, carbon fibers, and graphite, cold pressing, and sintering. By introducing hydrophilic sulfonic acid groups and branched whisker carbon nanotubes into the sulfonated PEEK material, the material effectively adsorbs hydrated cations from seawater, forming a hydrated lubricating layer on the material surface. Furthermore, the doped graphite, carbon fibers, and polymer interfaces within the material provide bridging and toughening. In addition, by dispersing the whisker carbon nanotubes using an alkylbenzene sulfonate dispersant, the sulfonic acid groups interact with the surface dispersant, enhancing the bonding between the PEEK material and the whisker carbon nanotubes and improving the surface strength of the material. This solves the problems of poor load-bearing capacity and severe wear at low speeds in existing PEEK composite materials.

The present invention relates to a waterproof, moisture-proof and mildew-proof construction process for a basement, which is characterized in that it comprises the following steps: Step 1, cleaning the walls and the floor of the basement; Step 2, detecting whether the walls and the floor of the cleaned basement are flat; Step 3, drying the walls and the floor of the basement, and then coating the spacer primer; Step 4, after the spacer primer is dried, coating the surface of the spacer primer with a waterproof topcoat; Step 5, curing and drying until it is completely solidified, that is, completing the construction. The present invention adopts an environmentally friendly water-based double-layer coating for the waterproof construction of the basement. Among them, the spacer primer is an epoxy water-based coating, which is a varnish coating with strong adhesion, so that it has good adhesion with concrete; the waterproof topcoat is an acrylic water-based coating with a new formula, which not only has excellent waterproof properties, but also has high strength and good mildew resistance.

The utility model relates to the technical field of aluminum alloy sections, in particular to a high-strength aluminum alloy section for a combined energy-saving curtain wall, which comprises a stand column, a plurality of rib columns distributed at equal intervals are arranged on the inner side of the stand column, and ribs are arranged on the periphery of each rib column. The cross beams are located on the front side and the rear side of the stand column, fixing cylinders are arranged on the inner sides of the cross beams, and reinforcing fins are fixedly connected between the peripheries of the outer surfaces of the fixing cylinders and the inner walls of the cross beams. Under the action of the rib columns, the ribs and the honeycomb fiber braid layer, the aluminum alloy profile has the advantages of high strength and large bearing load, and the problem that the aluminum alloy profile for the combined energy-saving curtain wall possibly has insufficient strength in certain specific application scenes is solved; in particular, in a large-span, high-wind-pressure or complex-modeling curtain wall system, most traditional aluminum alloy sections are designed into single cavities, and deformation is prone to occurring when large loads are borne.

The present invention provides a wear-resistant and stain-resistant UHPC white decorative board, a composition and a preparation method; the composition of the wear-resistant and stain-resistant UHPC white decorative board includes, by mass, 89-91 parts of white silicate cement, 8-15 parts of silane-modified white auxiliary cementitious material, 0.5-1.0 parts of organic silicon hydrophobic agent, 100-120 parts of stearic acid-modified white dolomite aggregate, 2.5-4 parts of liquid water reducer, 0.20-0.30 parts of liquid defoamer, 0.10-0.30 parts of anti-cracking fiber, and 18-22 parts of water. The UHPC white decorative board in the present invention has ultra-high performance, and it not only has good appearance quality, but also has excellent characteristics such as high strength and toughness, high density and high wear resistance, strong hydrophobicity and strong stain resistance.

The present invention discloses a high-strength high-temperature resistant alloy fastener and a preparation method thereof, the method comprising the following steps: S1, preparing Ce-Y-Nb-Mo-Fe master alloy; S2, weighing raw materials: C, Si, Mn, Cr, Ni, V, Fe and Ce-Y-Nb-Mo-Fe master alloy, smelting to obtain molten steel; S3, forging the molten steel ingot into a mold, and rough machining to obtain a fastener blank; S4, heat treatment; S5, using multi-component ceramic alloy cladding powder to perform laser cladding treatment on the heat-treated fastener blank, and fine machining to obtain a high-strength high-temperature resistant alloy fastener. The present invention can effectively improve the strength and heat resistance of the fastener by optimizing and adjusting the composition and adding elements such as Ce, Y, Nb, Mo, Cr, and Ni; and can effectively solve the problems of easy loss of rare earth elements Ce and Y during smelting and difficulty in uniform dispersion of trace element Nb.

The invention relates to a post-processing method for selective laser sintering precoated sand, which is characterized in that supports are added to easily-broken parts and easily-deformed parts of a laser sintering model, so that the probability of deformation, cracking, collapse and the like in the laser sintering process is reduced, and the sintering success rate is increased. And through primary sand removal and deep sand removal, it can be ensured that the forming quality of the precoated sand laser sintering sand mold after heating and curing is high. And deep sand cleaning is conducted on the surrounding area of the sand cleaning platform, the cleanliness of the working area is guaranteed, falling is prevented, and the working safety is improved. And surface baking is conducted on the easily-damaged part of the precoated sand laser sintering sand mold, and damage to the surface of the precoated sand laser sintering sand mold caused by deep sand removal can be effectively reduced. And the precoated sand laser sintering sand mold is heated and cured, and the overall strength of the precoated sand laser sintering sand mold is improved. And the heated and cured precoated sand laser sintering sand mold is subjected to surface inspection and defect repair, so that the forming quality of the precoated sand laser sintering sand mold is better, and the casting success rate and the forming quality are effectively improved.

The invention relates to the technical field of rubber mixed compounds, in particular to a wearable hydrogenated nitrile rubber mixed compound which comprises hydrogenated nitrile rubber, precipitated silica, precipitated white carbon black, triethanolamine, an anti-aging agent, an active agent, a processing aid, a vulcanization cross-linking agent and a vulcanizing agent. Wherein the acrylonitrile content of the hydrogenated nitrile rubber is 27%-41%; the preparation method of the wearable hydrogenated nitrile rubber compound comprises the following steps: S1, raw rubber plastication; s2, rubber material mixing; s3, sheet discharging; s4, dynamic vulcanization; and S5, refining. The precipitation-method white carbon black is adopted to improve the density, ultraviolet resistance and coloring stability of the hydrogenated nitrile rubber compound, the triethanolamine is adopted to reduce the adsorption capacity of the precipitation-method white carbon black, the wearable hydrogenated nitrile rubber compound has good surface strength and stability, no obvious fingerprint is left when a human hand is in contact with the wearable hydrogenated nitrile rubber compound for a long time, and the service life of the wearable hydrogenated nitrile rubber compound is prolonged. The hand perspiration resistance is excellent.

The utility model discloses a tantalum capacitor shell packaging structure that improves mechanical strength relates to tantalum capacitor shell packaging technical field, including outer layer packaging shell and middle layer packaging shell, the inside of outer layer packaging shell is provided with middle layer packaging shell, and the inside of middle layer packaging shell is provided with inner layer packaging shell, and the top surface of outer layer packaging shell is provided with first reinforcing rib, and the left and right sides of outer layer packaging shell all are provided with second reinforcing rib. This tantalum capacitor shell packaging structure that improves mechanical strength, through being provided with the outer layer packaging shell of layer -by -layer nesting structure, middle layer packaging shell, inner layer packaging shell, utilize the cooperation of the structure between three, can provide structural protection for internal component as far as possible, to guarantee the operation stability of whole, cooperate the structural setting of base, first reinforcing rib and second reinforcing rib, can further guarantee the mechanical strength of whole packaging structure like this.

The invention discloses a red sandstone cultural relic anti-weathering coating and a preparation method thereof, and relates to the field of red sandstone cultural relic anti-weathering coatings, the coating comprises the following components by weight: 85-110 parts of absolute ethyl alcohol, 10-15 parts of a film forming component, 0.5-1.5 parts of a salt crystallization inhibitor, 0.5-2 parts of a pore forming agent, and 0.01-0.06 part of a composite nano modifier; and the film forming component comprises dodecyl trimethoxy silane. After the coating is used for the red sandstone cultural relics, the original color and appearance of the red sandstone cultural relics cannot be covered, and the reinforced and repaired red sandstone cultural relics also have the properties of high surface hardness, high hydrophobicity, high air permeability, excellent acid resistance, excellent salt resistance and the like.

The present application relates to a kind of water-based quick-drying coating for casting and its preparation method, the water-based quick-drying coating is prepared by the following raw materials according to weight percentage, refractory aggregate 60~80%, binder 3~10%, suspending agent solution 0.5~5%, quick-drying aid 0.2~1.0%, dispersing agent 0.2~1.0%, defoaming agent 0.1~1.0%, water-reducing agent 0.2~1.0%, carrier liquid 14~25%.The water-based casting coating of the present application has the characteristics of short drying time, small gas evolution, high surface strength.

The utility model discloses a fabric with a good perspiration effect. The fabric comprises a fiber layer, the silver wire layer is used for inhibiting bacteria and peculiar smell, and the silver wire layer is located outside the fiber layer; the all-cotton layer is used for absorbing moisture and releasing sweat, and the all-cotton layer is located outside the silver wire layer; the chinlon layer is used for improving wear resistance, and the chinlon layer is located outside the all-cotton layer; the sunscreen film is used for sunscreen, and the outer wall of the sunscreen film is fixedly connected with the outer wall of the chinlon layer; honeycomb holes are formed in the wall of the silver wire layer, and the honeycomb holes are formed in the outer wall of the silver wire layer in a honeycomb-shaped array mode. The utility model relates to the technical field of perspiration fabrics. According to the fabric, the silver thread layer is arranged, sweat in clothes is oxidized with air, positive ions are released to attack negative ions carried by bacteria, the effect of inhibiting the bacteria and peculiar smell is achieved, the problem of obvious sweat odor generated by the sweat is solved, a user is kept fresh for a long time, and meanwhile accumulation of the bacteria on the skin is inhibited.

The invention discloses a preparation method and application of a composite paper surface reinforcing agent. The surface reinforcing agent comprises a cross-linked amphoteric polyacrylamide emulsion and an alkyl ketene dimer (AKD) emulsion. The cross-linking type amphoteric polyacrylamide emulsion is a cross-linking type polyacrylamide emulsion with an interpenetrating network structure, which is prepared by taking a polyvinylamine-co-sodium acrylate amphoteric polymer as a polymer emulsifier through soap-free polymerization. The preparation method comprises the following steps: firstly, taking N-vinylformamide and acrylic acid as raw materials, carrying out water solution free radical polymerization to obtain a poly (N-vinylformamide-co-acrylic acid) copolymer, and then carrying out alkaline hydrolysis to obtain a polyvinylamine-co-sodium acrylate amphoteric polymer; and performing soap-free emulsion polymerization on the amphoteric polymer serving as an emulsifier, an acrylamide monomer, a crosslinking monomer and the like to obtain the crosslinking amphoteric polyacrylamide emulsion. The surface reinforcing agent is compounded with AKD emulsion for use, the ring crush compression resistance, folding strength, bursting strength, tensile strength and surface strength of paper can be remarkably improved, and meanwhile, the surface reinforcing agent has good water resistance and moisture regain resistance and is environmentally friendly and non-toxic.

The utility model discloses an assembly type inorganic pre-coating plate, which belongs to the technical field of inorganic pre-coating plates and is characterized in that the assembly type inorganic pre-coating plate comprises an inorganic pre-coating plate main body, butt joint blocks are arranged on the front side and the right side of the inorganic pre-coating plate main body, and butt joint grooves are formed in the rear side and the left side of the inorganic pre-coating plate main body; the butt joint block is matched with the butt joint groove for use; the inorganic pre-coated plate main body comprises a base material layer, a stable layer is arranged at the top of the base material layer, a covering layer is arranged at the top of the stable layer, and a sealing layer is arranged at the bottom of the base material layer. The problems that in the prior art, the surface coating strength is low, bacteria breeding is easily caused, the use hygiene is influenced, the surface coating strength is low, the surface coating is easily damaged, the surface coating of the inorganic pre-coating plate loses the corresponding function, and the use effect is influenced are solved.

This invention provides a method for preparing coated notebook paper, comprising the following steps: S1, preparing base paper; S2, coating the surface of the base paper to form a coating layer, the coating layer comprising pigments and adhesives, wherein the adhesives comprise polyvinyl alcohol and enzyme-converted starch, comprising 100-110 parts by weight of pigment, 3-5 parts by weight of polyvinyl alcohol, and 10-14 parts by weight of enzyme-converted starch; S3, subjecting the base paper treated in step S2 to a second drying, calendering, and winding process to obtain the coated notebook paper. This application also provides coated notebook paper prepared by the above method. The coated notebook paper prepared by the method provided in this application has a fine surface, smooth writing, minimal pen wear, minimal ink bleeding, and rapid drying. It also possesses good coating strength and anti-bleed-through properties, making it particularly suitable as high-grade notebook paper.

The utility model relates to the technical field of wainscots, and discloses a wainscot for indoor decoration, which comprises an anti-corrosion layer, a waterproof layer, a reinforcing layer, a wormwood fiber layer, a shock absorption layer, a sound absorption layer, an isolation layer and an anti-collision layer, the waterproof layer is fixedly connected to the upper surface of the anti-corrosion layer, and the reinforcing layer is fixedly connected to the upper surface of the waterproof layer. The anti-corrosion layer is formed by laying the bamboo wood fiber boards, the bamboo wood fiber boards are light in material, not prone to deformation and aging and good in anti-corrosion effect, the service life of the attached position of the wall protection board and a wall can be guaranteed, the waterproof layer is formed by laying the plastic film, water can be prevented from permeating into the wall protection board, and the service life of the wall protection board is prolonged. The reinforcing layer is formed by laying PVC boards, the internal strength of the wall protection board can be improved, the wormwood fiber layer is formed by pressing wormwood fibers and has certain flexibility and elasticity, and when the wormwood fibers are impacted by external force, the wormwood fibers can absorb and disperse impact energy through deformation of the wormwood fibers.

The invention relates to a surface reinforcing agent for high-permeability concrete and a preparation method of the surface reinforcing agent, and the surface reinforcing agent is prepared from the following components in mass concentration: potassium silicate, methyl silicate, nano silicon dioxide, polyvinyl acetate, styrene-acrylic emulsion, 2, 2, 4-trimethyl-1, 3-pentanediol monomethyl ester, dibutyl phthalate oil and polyester chain phosphate water. The high-permeability concrete surface reinforcing agent provided by the invention is safe and environment-friendly, is convenient to transport and store, can carry out on-site concentration adjustment according to the actual condition of the concrete surface, can rapidly permeate to the depth of 20-30mm of the concrete after being brushed or sprayed on the concrete surface, and is subjected to multiple reactions with hardened by-products, so that the surface reinforcing agent can be applied to the concrete surface. Therefore, the surface strength, the compactness, the wear resistance, the impermeability and the carbonization resistance of the concrete are remarkably improved.

The present invention provides a carbon fiber thermal insulation felt reinforced film layer and a carbon fiber thermal insulation felt containing the same, and relates to the technical field of thermal insulation materials. The carbon fiber thermal insulation felt reinforced film layer is mainly prepared from carbon fiber filaments and a reinforcing solution; the carbon fiber filaments are asphalt-based carbon fiber filaments; the reinforcing solution includes strength reinforcing materials, thermal stability materials, curing agents, dispersants and solvents; wherein the strength reinforcing materials include at least one of silicon dioxide, aluminum oxide and silicon nitride; the thermal stability materials include at least one of zirconium oxide and cubic boron nitride. The carbon fiber thermal insulation felt reinforced film layer prepared from the above materials in the present application has the technical advantages of low thermal conductivity, high surface strength, and can be used in a high-pressure thermal field environment, effectively alleviating the problem that the existing carbon fiber thermal insulation felt cannot be used in a high-pressure environment.

The application discloses a light autoclaved aerated concrete block and relates to the technical field of concrete blocks.The light autoclaved aerated concrete block comprises the following raw materials: cement, lime, base material, modified palygorskite, calcium sulfate dihydrate, aluminum paste, foam stabilizer and deionized water.In the application, the fibrous structure of the modified palygorskite can form a network framework in the slurry, fill the internal pores and block the capillary channels, so that the overall structural compactness and surface strength of the block are improved, and the drying shrinkage and water absorption are reduced.The alkyl benzene sulfonic acid sodium in the foam stabilizer can reduce the surface tension of the slurry and promote the generation of a large number of bubbles.Nano silicon dioxide can form a rigid support framework in the bubble liquid film to prevent the bubbles from merging or breaking.Polyvinyl alcohol forms an elastic protective film on the bubble surface, prolongs the bubble life, greatly improves the block closed porosity, guarantees the light weight of the block, reduces the drying shrinkage due to the uniformity of the pores, and improves the impermeability and overall strength.

The invention discloses an over-limit coal gangue detecting and crushing device for a crushing station, which comprises a crushing mechanism, the crushing mechanism comprises a roller, the surface of the roller is provided with protruding cutting teeth, and the roller is installed above a crushing roller of a crusher and is used for cutting off the cutting teeth when over-limit coal gangue exists on the crusher. The crushing roller serves as a fixed fulcrum of the overrun coal gangue, and the cutting teeth complete cutting and crushing of the overrun coal gangue through rolling. The device is simple in structure and reasonable in layout, crushing station damage caused by long-time blocking of large gangues is effectively prevented, the coal conveying efficiency is guaranteed, modular adding can be conducted on existing equipment, the structure of an existing crushing station does not need to be changed, and good economic benefits are achieved. The invention further provides an over-limit coal gangue detecting and crushing method for the crushing station and the crushing station.

The utility model provides a kind of prestressed composite steel beam, it is related to composite steel beam technical field, the utility model includes steel frame, the steel frame is the H-shaped steel of the outer surface shape as H, the outer surface of steel frame is equipped with several threaded holes, the both sides of steel frame are provided with reinforcing device, the reinforcing device includes reinforcing plate, the outer surface of reinforcing plate is equipped with several through holes, the inner wall of through hole is slidably inserted with bolt, the inner wall of threaded hole is threadedly connected with bolt, the angle between the end of support plate away from reinforcing plate and reinforcing plate is perpendicular to each other, the utility model is connected by setting reinforcing device, reinforcing plate is adhered to the outer surface of steel frame using bolt, reinforcing plate and steel frame, reinforcing plate and support plate are installed on the outer side of steel frame, the vertical shear prestress of steel frame and the bearing capacity of core are enhanced, and different positions on the surface of steel frame can be reinforced according to the need installation in different positions of steel frame.

The invention belongs to the technical field of papermaking, and provides a modified bacterial cellulose stabilized AKD (Alkyl Ketene Dimer) sizing agent emulsion. The TEMPO oxidized bacterial cellulose nanofiber suspension and the silver ammonia solution are heated to react, and TBC-coated Ag is obtained; dropwise adding TEOS (tetraethyl orthosilicate) into the ethanol dispersion liquid of the TBC (at) Ag, stirring and reacting to obtain TBC (at) Ag (at) SiO2; the preparation method comprises the following steps: shearing and emulsifying TBC-Ag-SiO2 aqueous dispersion and molten-state AKD under a heat preservation condition, and then carrying out ice-water bath to obtain an AKD sizing agent emulsion. The AKD sizing agent prepared by the invention is suitable for surface coating and sizing, and has the advantages of no need of adding a surfactant, environment friendliness and high storage stability; the emulsion particles are uniform and fine, the preparation process is simplified, the cost is low, the good adaptability to pH and temperature fluctuation is achieved, operation is safe and reliable, and the emulsion is suitable for being applied and popularized in production of packaging paper and high-performance paper.

The utility model belongs to the technical field of PETG (polyethylene terephthalate glycol) composite film bags, and particularly relates to a PETG composite film bag with light shielding performance, which comprises a bag body, the bag body comprises a base layer, the outer wall of the base layer is provided with a heat insulation layer, the outer wall of the heat insulation layer is provided with a light shielding layer, the outer wall of the light shielding layer is provided with an aluminum foil layer, the outer wall of an anti-scraping layer is coated with a shading coating, and the base layer is a PETG film. The bag body has a low shrinkage rate at normal temperature, and a stable packaging effect can be kept under different conditions; the heat insulation layer is a polyester film and has a good heat insulation effect, and medicine in the bag body is prevented from losing efficacy due to high temperature; the light shielding layer is a black PE film, so that the light shielding effect is improved, and light is prevented from penetrating into the bag body; an aluminum foil layer is arranged on the outer wall of the light shielding layer and further improves the oxidation resistance, shading and heat insulation effects of the bag body; the scratch-resistant layer is a PET scratch-resistant film, so that the bag body can be prevented from being damaged, and the service life is prolonged; and the outer wall of the scratch-resistant layer is coated with the shading coating, so that the light shielding effect of the bag body is further improved.