1509results about How to "With strength" patented technology

A dental multi-color machinable zirconia ceramic and its preparation method. The zirconia ceramic has the characteristics of translucence and color gradient, and contains more than five porcelain layers with the same hue and different saturation. The lightness gradually decreases from the top of the ceramic to the bottom layer, and the saturation The density gradually increases, and the color transitions naturally with a sense of hierarchy; the pre-sintered porous ceramic body of the zirconia ceramic is easy to cut and shape, and can be used to make personalized and beautiful dental zirconia all-ceramic restorations through the CAD / CAM system, which is conducive to preserving the abutment teeth. Improve the repair success rate. The preparation method of the dental complex color machinable zirconia ceramic is simple, effective and easy to popularize.

The invention relates to an alkali activated solidification and stabilization treatment method of refuse incineration fly ash. The method comprises the following steps of: A: carrying out a pretreatment on the refuse incineration fly ash; B, then adding water and heavy metal stabilizing agents and fully stirring so as to fully integrate soluble heavy metals in the fly ash with the heavy metal stabilizing agents and then realizing a mineralization stability; C, adding alkali activating agents into fly ash slurry after finishing the B step and fully stirring; D, carrying out a heating treatment on a water bath after finishing the C sep, controlling a heating temperature and a heating time, and aperiodically stirring so as to uniformly heat the fly ash slurry materials; and E, finally shaping and maintaining the mixed materials so as to further blockade mineralized heavy metals in the fly ash and simultaneously solidify dioxin in the fly ash, and finally realizing the harmless solidification and stabilization of the fly ash. According to the method provided by the invention, the gelling reaction of the fly ash is generated by using the alkali activating agents to activate the fly ash activity only on a base of regulating the fly ash activity, and the double-effect stabilization of the fly ash is obtained by simultaneously supplementing the heavy metal stabilizing agents; moreover, the method has the advantages of low cost, good effect, low increase-volume rate and no secondary pollution.

The invention relates to a preparation method of ceramizing fire-resistant silicon rubber. The rubber comprises the following components in parts by weight: 100 parts of methyl vinyl silicon rubber, 20-50 parts of white carbon black, 2-10 parts of hydroxyl silicone oil, 1-5 parts of a coupling agent, 25-100 parts of ceramizing powder, 2-5 parts of a heat stabilizer, 10-40 parts of a fire retardant, and 1-2 parts of a vulcanizer. The preparation method includes the following steps: adding the methyl vinyl silicon rubber in a kneading machine; then adding the white carbon black and the hydroxyl silicone oil; mixing for 30 minutes at the temperature of 80 DEG C; then adding the coupling agent, the ceramizing powder, the heat stabilizer and the fire retardant; mixing for 1-1.5 hours; raising the temperature to be 100 DEG C and keeping high vacuum for 30 minutes; and after cooling to room temperature, adding the vulcanizer on an open mixing machine for mixing to obtain the ceramizing fire-resistant silicon rubber. The rubber has good mechanical property and electrical property at normal temperature, does not contain halogen, is smokeless and non-toxic during combustion, can be extinguished quickly and forms a ceramizing shell to guarantee integrity of the inside.

The invention discloses a low-density aerogel composite material and block-shaped low-density gel insulating composite material through packing the low-density aerogel composite material, which comprises the following steps: utilizing high-polymerization degree polyacrylic acid as porous nanometer silica reinforced frame to make the silica gel and composite material with certain elasticity and contractility; inhibiting crack during gel preparing course and hyper-critical drying course effectively; adopting packing slurry with alumina, titania, carborundum, hollow glass microball or ferroferric oxide and soluble silicate, organosilicon resin or silica gel to pack the surface of large block of silica aerogel; sintering the packed aerogel composite material at 650-700 deg. c; using the material under 1000 deg. c at most.

The invention discloses an intumescent fireproof adhesive tape used in construction and relates to the field of fireproof sealing materials, aiming at solving the technical problems that the existing fireproof sealing tape does not have good pliability under normal temperature, thus being inconvenient for construction and installation, and can not resist high-temperature thermal current when encountering fire, etc. The intumescent fireproof adhesive tape used in construction of the invention consists of the components by parts by weight (pbw) as follows: 10 pbw to 60 pbw of rubber, 10 pbw to 40 pbw of plastic, 10 pbw to 40 pbw of compounded material, 10 pbw to 30 pbw of intumescent material, 8 pbw to 55 pbw of flame retardant material, 0 pbw to 8 pbw of lubricating material and 0 pbw to 8 pbw of stabilizing material. The intumescent fireproof adhesive tape of the invention is applicable to the blocking of perfoliate openings and fireproof sealing of building apertures.

The invention discloses a construction material produced from industrial residue, aims to provide a construction material having the advantages of light weight, sound insulation, heat insulation, low cost, fire resistance, dense products, high rigidity and the like, and solves the problems with land occupation and pollute environment of phosphate slag and phosphogypsum at the same time. the invention is realized through the following technical scheme: phosphate slag and phosphogypsum are used as raw materials for producing the construction material, which comprises the following components by the weight part: 35 to 65 parts of phosphate slag, 10 to 40 parts of phosphogypsum, 5 to 15 parts of lime, 15 to 28 parts of cement, 0.1 to 0.4 part of light aggregate, 0.02 to 0.05 part of soluble glass, 0.02 to 0.05 part of water-reducing agent, 0 to 0.004 part of retarding agent, 0 to 0.005 part of early-strength admixture, and 0 to 0.008 part of foam killer; the components are weighed by the formula weight part and added to a blender; water is added to the blender with the water-to-material proportion being 4 to 10 and mixed evenly with the materials; and the solution is cast into a die and natural air dried after molding. Dies with different structures can be used according to purposes to conduct cast molding. The construction materials such as wall plates, guardrail decoration pillars, door and window sleeves, vase sleeves and the like can be produced.

The invention provides an afforested ecology brick comprising cement, frame material, pore material, organic fertilizer and slow release fertilizer. The organic fertilizer and the slow release fertilizer are blended evenly in a stirring mill by a certain proportion, and then shaped into circular or columnar pellets by a pelleter. The pore material and the frame material are smashed successively, and all materials are blended evenly into the stirring mill according to allocated proportion, and then loaded into a mold and aired or dried after the compression of a breeding hole device on the breeding holes. The invention has the advantages of reasonable design, easy operation, widespread selection of raw materials, and low cost. The ecology brick of the invention can not only solidify slope protection, but meet the growth of plants. Moreover, the invention has the abilities of anti-wind and anti-aridity, thereby enabling the flexible landscape design in different forestation places. The invention not only meets the afforested needs, but also processes the abandoned resources through solidifying means, thereby avoiding the pollution to the environment and meeting the demand of environmental protection. The invention can be applied to rock surface, slope forestation and solidification, and environmental greening.

The invention discloses a method for preparing heating but incombustible cigarettes and application thereof. The method and the application have the advantages that novel knurling rolling technologiesare adopted, accordingly, heating but incombustible reconstituted tobaccos with certain thicknesses have uneven surfaces, the surface areas can be enlarged, atomization effects can be enhanced, and surface frictional force can be enlarged; embossed composite aluminum-foil cigarette paper is adopted, accordingly, friction between the reconstituted tobaccos and aluminum-foil pattern surfaces of thecomposite aluminum-foil cigarette paper which is a cigarette making and plug assembling material can be greatly enhanced when the reconstituted tobaccos and the composite aluminum-foil cigarette paper are loaded in a cigarette making and plug assembling machine and cigarette making and plug assembling are powered on in later periods, the heating but incombustible cigarettes are easy to process, equipment shutdown frequencies can be reduced, the heating but incombustible cigarettes can be continuously produced, the production efficiency can be improved, and the material cost and the productioncost can be reduced; low-temperature cigarettes have short cut tobacco sections, accordingly, friction can be improved, the method is beneficial to reducing cut tobacco dropping, and the shortcomingsof low frictional force between smooth surfaces of existing heating but incombustible reconstituted tobaccos and non-embossed aluminum-foil paper which is a wrapping material, severe slipping, frequent equipment shutdown due to incapability of driving cigarette paper, influence on production efficiency, low frictional force due to short cut tobacco sections of existing low-temperature cigarettes,vulnerability to dropping of low-temperature cut tobaccos of the existing low-temperature cigarettes and the like can be overcome.

The invention discloses a sludge treatment method, as well as sludge foamed lightweight concrete produced through the method and application thereof. In the method, sludge produced by sewage treatment first reacts with quicklime so as to form sludge hydrated lime; then the sludge hydrated lime is mixed with cement and water so as to form sludge concrete; foaming agent produces foam by utilizing a foaming system of a foaming machine; and the foam is mixed with the sludge concrete. The sludge treatment method can directly obtain the sludge foamed lightweight concrete. The sludge foamed lightweight concrete has a plurality of functions, which can be used as a filling material, a heat insulating material, a walling material, a sound insulation material, a mine tunnel filling material, an artificial landscape manufacturing material, a road recovery material, a pipe base filling material and the like. The sludge treatment method is low in cost and friendly to environment, can directly produce the sludge foamed lightweight concrete with a plurality of functions, and not only solves the sludge treatment problems in the sewage treatment industry, but also ensures the full utilization of the sludge.

The invention belongs to the field of metal materials, and relates to a novel high strength steel board low in density, high in strength and good in anti-corrosion performance, in particular to component design and a preparation method of the novel automobile-used steel. The automobile-used steel board is characterized by comprising the following specific chemical compositions by mass percentage: 0.60-0.70 percent of C, 0.30-0.40 percent of Si, 10.0-15.0 percent of Mn, 5.0-10.0 percent of Al, less than 0.005 percent of P, less than 0.003 percent of S and Fe and unavoidable impurities in balancing amount. The preparation process comprises the following steps: performing smelting according to the chemical compositions, and forging casting blank material into a steel blank; heating the steel blank to 1,130-1,170 DEG C, keeping the temperature for 2 hours, and performing multi-pass hot-rolling deformation, wherein the rolling starting temperature ranges from 1,030-1,070 DEG C, the rolling stopping temperature ranges from 850-900 DEG C, the accumulated deformation amount ranges from 80 percent to 85 percent, and the rolling temperature is from 200 DEG C to 250 DEG C; after hot rolling, further performing solution treatment of the steel board, keeping the temperature at 1,000-1,050 DEG C for 0.5-1 hour, and performing water quenching treatment; taking a dual-phase organization combining austenite and ferrite, and obtaining the lower density and high toughness automobile-used steel board.

The invention discloses a photocured organosilicone elastomer and a preparation method thereof. The photocured organosilicone elastomer is prepared from, by weight, 50-80 parts of vinyl methyl phenyl polysiloxane, 10-30 parts of mercaptopropyl methyl phenyl polysiloxane, 5-20 parts of mercaptopropyl silicon resin, 0-3 parts of photoinitiator and 0.1-1 part of auxiliary. Vinyl methyl phenyl polysiloxane, mercaptopropyl methyl phenyl polysiloxane, mercaptopropyl silicon resin and the photoinitiator are used as raw materials and mixed and stirred to be uniform, and the photocured organosilicone elastomer is prepared. By adjusting the quantity ratio of methyl segmers and phenyl segmers in polysiloxane and introducing mercaptopropyl silicon resin to serve as a macromolecular cross-linking agent, photocured organosilicone elastomers different in toughness, mechanical strength and refractive index can be prepared, and rapid curing molding is realized within 5-20 s under ultraviolet illumination; the process is simple, efficient and environmentally friendly and saves energy; the photocured organosilicone elastomer can be applied to the fields of electronic packaging materials, optical materials, 3D printing materials and the like.

The invention discloses light foaming concrete made by waste concrete, and the production method and application of the foaming concrete. The foaming concrete is formed by the mixing of regenerated foaming concrete aggregate formed after the smashing and screening of the waste concrete, jellous slurry formed by adding concrete, fly ash and water, and foam generated by a foaming agent. After on-spot injection, pouring or mould pouring, the foaming concrete can be used in a plurality of aspects in municipal infrastructure construction such as weak subgrade processing, high filling subgrade, road-widening subgrade, temporary subgrade, various underground pipeline foundation, narrow slot and small clearance space filling, road landslide emergency backfilling, building heat preservation, sound insulation walls and the like. The adoption of the waste concrete for making the foaming concrete has the advantages of utilizing the waste, being environment-friendly, saving energy and having low cost, and the like, and the produced foaming concrete has a plurality of good performances such as light weight, no lateral confinement compression resistance, self-compaction and vibro-free property, and the like.

The invention discloses a production method for bactericidal packing paper, which comprises the following steps of: (1) preparation working procedure of applying glue solution to pulp; (2) preparation working procedure of applying glue solution to a surface; (3) working procedure of sizing agent repulping, selecting Southern pipes produced in America to make pulp, adding sodium carbonate and carboxymethyl cellulose into a repulping liquid; (4) working procedure of pulp matching, adding a wet strength agent; (5) working procedure of webbing and forming; (6) working procedure of applying glue solution to the surface, using modified tapicoa starch and polyvinyl alcohol for applying the glue solution to the surface; and (7) completion working procedure. The bactericidal packing paper has good air permeability, high surface strength, tearing resistance after disinfection and high bursting strength and can block bacterium invasion.

The invention relates to a granular anti-hardening acid-base dual-purpose ternary micro-electrolysis filler and a preparation method thereof. The grain size of the filler ranges from 1mm to 5mm, and iron powder, aluminium powder and graphite powder are mixed in a mass ratio of (2-6):(2-6):1 to perform granulation and then are sintered by being isolated from air, thus obtaining the filler. The micro-electrolysis filler is applicable to micro electronic treatment on acid sewage or base sewage. According to the invention, the efficiency of micro electrolysis on the sewage is high, a filling areais not easy to harden, and the period of back flushing is long. When the ternary micro-electrolysis filler is used for treating the sewage, CODcr (chemical oxygen demand) of the sewage can be reducedefficiently in a short time, and the biochemistry of the sewage can be improved. According to the invention, the raw materials are easy to obtain, the preparation process is simple, the problem of filler hardening of the conventional micro-electrolysis technology is solved, and the filler is applicable to treatment on the base sewage.

The present invention relates to surgical material. The material includes biological absorbable polymer 10-85 wt%, un-sintered calcium phosphate salt 5-80 wt%, and demineralized bone 1-70 wt%. The biologically absorbable polymer includes polyester, chitosan, hondroitin sulfate, collagen, alginatel, etc.; and the calcium phosphate salt is un-sintered hydroxyapatite or tricalcium phosphate of granularity less than 100 microns. The hard tissue repairing material is prepared through mixing biologically absorbable polymer, un-sintered calcium phosphate salt and demineralized bone dispersed in solvent and freeze drying to obtain the hard tissue repairing material. The composition has the function of promoting bone healing and excellent biocompatibility.

The invention discloses a warm eye-protection matte glaze for building ceramic tiles, and a preparation technology thereof. The preparation technology comprises the following steps: (1) weighing clay,feldspar, quartz, talcum, dolomite, limestone, borax, zirconium silicate, zinc oxide, alumina, barium carbonate and strontium carbonate according to the chemical composition range, crushing the weighed materials to form 180-350 mesh particles, mixing the particles, sintering the obtained mixture at 1480-1580 DEG C to form a glassy melt, and quenching the glassy melt with water to obtain a matte frit for the ceramic tile glaze; and (2) adding clay raw materials and a glaze slip performance regulator to the frit, and performing full wet ball-milling to obtain a matte glaze slip. The compositionof the formula is slightly changed, so the glaze obtained after sintering has the advantages of high strength, high wear resistance, high aging resistance and long service life; the glaze is flat, fine and smooth, is free of pinholes, and has silky or velvet gloss, and the glossiness of the glaze is 3-5 DEG less than that of existing products, so the glaze makes people have soft, quiet and comfortable eye-protection feeling; and the tile matte glaze has tender and soft hand feeling, and is warm.

The invention discloses a microcrystalline foamed wall block produced by use of tailings and a manufacturing method of the microcrystalline foamed wall block. According to the microcrystalline foamed wall block, a decorative surface layer is sintered on a tailing microcrystalline foamed base body manufactured by use of a tailing composite material at a high temperature. The manufacturing method comprises the following steps: (1) preheating, namely increasing the temperature to the range of 800-950 DEG C and preserving heat for 10-40 minutes; (2) integrated sintering, namely increasing the temperature to the range of 1000-1350 DEG C and preserving heat for 30-120 minutes; (3) annealing cooling, namely cooling to below 280 DEG C and then taking out of a kiln; (4) naturally cooling to below 100 DEG C and then performing mold stripping, thereby obtaining a microcrystalline foamed wall block board; naturally placing the microcrystalline foamed wall block board for more than 60 hours to eliminate stress, and then grinding or polishing, cutting and drying to obtain the microcrystalline foamed wall block. The microcrystalline foamed wall block has a plurality of functions of high strength, fire resistance, heat preservation and thermal insulation, moisture and water proofing, decoration, light weight, weathering resistance, environmental protection and the like.

The invention provides a polyetheretherketone total hip femoral head prosthesis material and preparation method thereof, wherein the material comprises (by weight percentage) 10-60% of carbon fiber and balancing polyetheretherketone. When short carbon fiber is employed, the short carbon fiber and polyetheretherketone resin are weighed and premixed in high speed mixing machine, the premix is compounded, squeezed and granulated with a double bolt extrusion machine. When continuous carbon fiber is employed, orthogonal reinforced carbon fiber tang and polyetheretherketone resin are weighed for laminating, then placed into parallel board die arrangement for compression moulding.

The invention discloses an intelligent light adjusting film and particularly discloses an intelligent light adjusting film based on a temperature-sensitive polymer hydrogel and a preparation method of the intelligent light adjusting film. A temperature-sensitive polymer and various auxiliaries are dissolved in a polymer hydrogel body without a temperature-sensitive effect to obtain the intelligent light adjusting film with a certain mechanical strength and good temperature sensitivity. The temperature-sensitive polymer, the various auxiliaries, a water-solubility monomer, a cross-linking agent and the like are prepared into an aqueous solution, an initiator is added into the aqueous solution to polymerize the solution to obtain the intelligent light adjusting film. The preparation method of the intelligent light adjusting film is simple in operation and low in cost and can be operated under room temperatures; and the obtained intelligent light adjusting film has certain strength and is good in temperature sensitivity.

The invention relates to a three-dimensional curved surface die-pressing forming mold of a thin-wall stamping part and a pressing die method thereof, belonging to the technical field of metal pressing. The three-dimensional curved surface die-pressing forming mold comprises an upper mold, a lower mold and a guide post, wherein the upper mold and the lower mold are arranged oppositely and are respectively connected with the guide post movably; the upper mold comprises an upper die shell and upper die punch heads, wherein a plurality of the upper die punch heads are fixedly and vertically arranged in the upper die shell by a fixed frame in a matrix manner; the lower mold comprises a lower die shell and lower die punch heads, wherein a plurality of the lower die punch heads are fixedly and vertically arranged in the lower die shell by a fixed frame in a matrix manner. The three-dimensional curved surface die-pressing forming mold of the thin-wall stamping part and the press die method thereof are simple, reliable and easy to operate, and can realize metal three-dimensional die-pressing technique with certain strength by convenient and fast combination.

The invention relates to a high-temperature radiation temperature enhancement device of a quartz lamp used for a guided missile thermal test. The high-temperature radiation temperature enhancement device comprises an interlayer water-cooled quartz lamp heating array, a water-cooled type cooper electrode base, a water flow channel of a lamp wall, a tungsten thermal fuse, a quartz lamp electrode, cooling water, a through water-cooled channel and a metal connecting pipe. A wall surface of the quartz lamp used for heating is designed into an interlayer form, part of the heat quantity on the surface of the quartz lamp can be removed by the cooling water flowing through the water flow channel of an interlayer lamp wall, so that the surface temperature of quartz glass is dropped to below softening temperature 1600 DEG C, an infrared light generated by the tungsten thermal fuse of the quartz lamp can penetrate through a wall surface of a heater of a transparent interlayer water-cooled quartz lamp and the transparent cooling water to radiate outwards. In the high-temperature radiation temperature enhancement device, a radiating capacity of the quartz lamp heating array exceeds the primary use limit temperature 1200 DEG C, and the maximum radiation temperature is increased to 1450 DEG C. Therefore, an effective high-temperature pneumatic thermal test analog method is provided for researching a hypersonic missile with faster flying speed, and the high-temperature radiation temperature enhancement device has an important application value in military engineering.

The invention provides a capillary crystalline waterproofing material which comprises silicate cement, quartz sand, a crystal master batch, latex powder, other active materials, and the like, whereinthe ratio of aggregate cement to the quartz sand is 1:1.89; the crystal master batch is dehydrated gypsum or calcium chloride, and the like; and the proportion of the crystal master batch is between 3percent and 7 percent. The waterproofing material has the bonding force, the surface adhesive force, quantities of formed crystals, the strength and the anti-penetration force of concrete and can ensure that concrete structures cannot be damaged. The capillary crystalline waterproofing material has wide range of application, is applied to projects of basements, civil air defenses, tunnels, ports,wharfs, swimming pools, dams, irrigation ditches, and the like, solves the problems of concrete projects, achieves the purpose of permanent water proofing and also protects concrete and reinforcing steel bars from corrosion.

The invention relates to the technical field of dyeing and finishing production of polyester-cotton anti-fluffing and anti-pilling fabrics. A new anti-fluffing and anti-pilling technology for a polyester-cotton fabric under special standards comprises the following steps of: (1) grey cloth seam turning, (2) primary singeing, (3) flat bleaching, (4) secondary singeing, (5) sizing, (6) mercerizing, (7) dyeing (dispersion / reduction), (8) finishing with a compound solution of ironing-free resin and an anti-fluffing and anti-pilling agent, (9) baking, (10) tentering, (11) pre-shrinking, (12) inspection, and (13) formation of a finished product. The product prepared by the technology meets the special quality requirement of customers for washing for 5 times, 30 minutes in each time, in hot water at 92 DEG C, the anti-fluffing and anti-pilling quality index of the fabric is detected, and the anti-fluffing and anti-pilling quality index of the product for clothes reaches the export standard, namely level 3-4.

The present invention relates to a method for manufacturing a diamond composite from diamond particles, comprising the steps of forming a work piece, heating the work piece and controlling the heating temperature and heating time so that a certain desired amount of graphite is created by graphitization of diamond particles, thereby creating an intermediate body, and infiltrating silicon alloy into the intermediate body. The invention also relates to a diamond composite produced by this method.

The invention discloses a water-based mold release and a preparation method thereof and release paper prepared by utilizing the water-based mold release. The mold release comprises the following raw materials by weight: 1 to 50 parts of organosilicone monomer, 1 to 50 parts of vinyl end-capping agent, 1 to 50 parts of alkyd resin, 1 to 10 parts of emulsifying agent, 1 to 10 parts of catalytic agent, 100 to 160 parts of deionized water, 0.1 to 10 parts of pH value conditioning agent, 1 to 10 parts of cross-linking agent and 0.01 to 1 part of platinum-based catalytic agent. The mold release has the advantages that the raw materials are cheap and easy to get; the preparation method is simple; the used mold release layer takes water as a dispersing agent; no organic solvent is released; the mold release is safe and environment-friendly; the release paper prepared by utilizing the mold release is short in thermosetting time, and is suitable for industrialized production; the prepared release paper is good in property.

The invention discloses nano cellulose based biological aerogel and a preparation method and an application thereof. The preparation method comprises the following steps: (1) taking plant cellulose pulp as a raw material, and preparing a nano / micron cellulose dispersion liquid by mechanical and chemical methods; (2) dissolving chitosan with an acid to prepare a solution; (3) mixing the nano / micron cellulose dispersion liquid of the step (1) and the solution of the step (2) with the mixed ratio of chitosan to nano cellulose of 1 to (0-0.4), and stirring; (4) carrying out centrifugal dehydration to form hydrogel; (5) carrying out freeze drying of the hydrogel of the step (4) to obtain the aerogel finished product. The aerogel preparation method has the advantages of simpleness, high practicality, and easy realization of industrialized production; and besides, the prepared biological aerogel is supported with nanoparticles, the particles are fine and are uniformly dispersed, and no particle agglomerating and caking phenomenon happens. The biological aerogel prepared by the method is completely biocompatible, has stable shape, is not easy to disperse, and is an excellent carrier for nanoparticles.

The invention provides a carbon fiber composite foam core sandwich structure wind tunnel fan blade. The wind tunnel fan blade is characterized in that a skin is arranged at the outer part; the internal front end of the skin is connected to a front edge reinforcing area; the internal middle part of the skin is connected with a main bearing beam; an internal space defined by the skin, the front edge reinforcing area and the main bearing beam is filled with a foam core material; the skin comprises an inner skin and an outer skin; the outer skin is laid and adhered to the surface of the inner skin; the thickness of the main bearing beam is changed from 8-10 mm at the root part of the blade to 2-4 mm at the tip of the blade; the thickness of the front edge reinforcing area is 2-5 mm, the thickness of the inner skin is 2-5 mm, and the thickness of the outer skin is 1-3 mm. A molding method comprises the following steps: (a), pasting a blade handle with the foam core material; (b), feeding prepreg; (c), performing paving and glue suction compaction on the front edge reinforcing area and the main bearing beam; (d), performing paving and glue suction compaction on the inner skin; (e), solidifying; (f), molding the outer skin. According to the invention, the high-performance wind tunnel fan blade can be produced, and the use requirements under low-temperature, high-pressure, high-humidity and normal-temperature vacuum simulated climate environments can be met.

The present invention provides continuously crimped propylene polymer nonwoven fabrics as well as processes for forming crimped multicomponent propylene polymer fibers by melt-attenuating extruded multicomponent fibers with heated or unheated air wherein the fibers spontaneously crimp without the need for additional heating and / or stretching steps.

The invention relates to a coating method of a winding amorphous iron core insulating coating. The coating method comprises a first step that a whole amorphous iron core is arranged in epoxy glue to conduct vacuum impregnation, a second step that the surface of the amorphous iron core is coated with epoxy resin, and a third step of heating and solidifying after the amorphous iron core is coated with the modified epoxy glue coating. Gaps between amorphous strips are sealed and have certain strength after the epoxy glue impregnation, the coating is neat in surface and uniform in thickness, vibration and noises of the iron core are reduced, and integrated installation is convenient. The coating is thinner than general coating technique and solidifying time is shortened. The epoxy glue enables solidifying contraction percentage to be low, the epoxy glue coating has good adhesiveness and elasticity and has little stress to the iron core, and the coating has little influence on initial magnet conductivity and inductance of the amorphous iron core. The amorphous iron core dealt with the coating method can greatly reduce no-load loss.

The invention discloses a resin type nanoparticle latex blocking agent for drilling fluids. The blocking agent comprises raw materials in parts by weight as follows: 20 parts of alkenyl benzene, 15 parts of acrylate, 1 part of acrylates and 10 parts of hard inorganic materials, wherein the mass ratio of short-chain monomers to long-chain monomers in acrylate monomers is 3:1. The blocking agent is a composite product of the inorganic materials and organic materials, combines the hard materials with soft materials, has a higher blocking rate and is wide in particle size distribution and wider in application range; the rheological property of the drilling fluids are seldom influenced after the blocking agent is added to the drilling fluids, the blocking capacity of the drilling fluids can be remarkably improved, and the filter loss of the drilling fluids is reduced.