52results about How to "Adjust content" patented technology

The invention discloses high-strength nodular cast iron QT900-6 which consists of the following elements in percentage by weight: 3.2-3.7% of C, 2.4-2.8% of Si, less than or equal to 0.2% of Mn, less than or equal to 0.03% of P, 0.005-0.02% of S, 0.8-1.4% of Cu and the balance of Fe and unavoidable trace elements. The high-strength nodular cast iron QT900-6 has high compressive strength, high yield strength and excellent mechanical property.

The invention discloses a high-strength viscose fiber and a production method thereof, which are characterized in that the viscose fiber is formed by mixing bacterial cellulose and viscose spinning solution, wherein the content of the bacterial cellulose in the viscose fiber is 1 to 10 percent. The production method comprises the following steps: the flake bacterial cellulose is pre-processed, and then the flake bacterial cellulose after the preprocessing is smashed with a ball milling method to obtain a micro nano-grade bacterial cellulose powder; the bacterial cellulose powder is added into the viscose spinning solution to be uniformly scattered and defoamed to obtain a spinning solution; and the spinning solution is made into a high-strength viscose fiber. The content of the bacterial cellulose in the viscose fiber is 1 to 10 percent. The viscose fiber which is prepared with the production method has high strength, small shrinkage and good elasticity, can be blended and interwoven with cotton, wool and other synthesized fibers to be used for the fields such as top-grade costume fabric and industrial textiles, and the like.

The invention belongs to the field of composite material production and preparation, and relates to a fiber reinforced thermoplastic resin unidirectional prepreg tape and a preparation method thereof. The prepreg tape is prepared from the following components, by weight: 30-70 parts of a thermoplastic resin, 30-70 parts of nature fibers, 0-1 part of a coupling agent, and 0-1 part of an emulsion. Compared with the prepreg tape in the prior art, the prepared nature fiber/thermoplastic resin unidirectional prepreg tape of the present invention has the following advantages and beneficial effects that: mechanical strength is high, the prepreg tape can be stored for a long time, the nature fibers are completely impregnated by the resin and are not exposed to the outside so as to maintain the dry state of the material, particularly the nature fibers, the nature fibers are not easily subjected to mildew deterioration, and the porosity is low so as to ensure performance stability of the product. With the method, the width of the reinforcing material and the nature fibers can be limited so as not to cause nature fiber deviation phenomenon during the subsequent production process.

The invention provides a metallic outdoor pattern powder coating and a producing method thereof. The metallic outdoor pattern powder coating is prepared from the following raw materials in part by mass: 60-78 parts of carboxyl polyester resin, 2.2-2.8 parts of curing agents, 10-29 parts of packing, 0.2-0.4 part of metallic pigments, 0.001-0.003 part of orange-peel agents, 0.1-0.2 part of special-effects pattern agents and 0.003-0.004 part of powder flowback preventing agents. The invention also provides a producing method of the metallic outdoor pattern powder coating. The metallic pattern powder coating is good in weather fastness, patterns of the outside of a film are clear, a metallic texture is strong, and after the metallic outdoor pattern powder coating is solidified into a film, the film has excellent weather fastness and good adhesive force. The problem that common metal powder is poor in weather fastness can be solved. Metallic patterns can be obtained. The metallic outdoor pattern powder coating can be used on aluminum profiles well.

The invention relates to a biodegradable composite prepreg cloth, and a preparation method and a device for the same. The composite prepreg cloth comprises a modified polylactic acid (PLA) resin accounting for 40-70 wt% of the composite prepreg and natural fiber. The preparation method comprises the following steps: conducting a continuous drying treatment on natural fiber; immersing the fiber with molten modified PLA; coating the modified PLA on the surface of the natural fiber; and rolling, cooling and winding to obtain the prepreg cloth. The device comprises an untwisting machine, an arrangement warping device, a direction control device, a friction roll, a tenslator, a film extruder, a gum dipping cooling device, and a winding device. Compared with the prior art, the invention has the advantages of large fiber draw ratio, obvious PLA enhancement effect, small wear of the extruder screw, simple process, energy saving and environment-friendliness.

The invention provides a method for lowering the content of an organic acid in a juice/fruit wine beverage. The method adopts macro-porous weak-base anion exchange resin and comprises the following steps: firstly, activating the resin so as to expose all active groups of the resin; secondly, carrying out a pre-treatment of the resin so that the activated resin adsorbs substances including the organic acid, nutritional ingredients and the like in juice/fruit wine, and filling a column with the pre-treated resin; thirdly, carrying out a resin regeneration step: eluting the organic acid, adsorbed by the resin, through adopting a regeneration agent, wherein other nutritional ingredients adsorbed by the resin are not eluted; and finally, carrying out a deacidifying step: enabling the juice/fruit wine to pass through the resin column from top to bottom, wherein the resin adsorbs the organic acid, but does not adsorb the other nutritional ingredients, so that the aims of deacidifying and keeping original nutritional ingredients and flavor to the greatest extent are realized. The resin regeneration step and the deacidifying step are alternatively carried out so that the method is suitable for large-scale industrial application. Meanwhile, the deacidifying effect and the flavor and taste of the beverage are influenced through controlling the temperature.

The invention relates to a refining method for improving the clean class of steel. The method comprises the following steps of: adding molten steel obtained by smelting into a steel ladle, and performing ladle furnace refining and casting sequentially, wherein refining slag is added into the steel ladle in the process of adding the molten steel obtained by the smelting into the steel ladle; and in the process of the ladle furnace refining, a deoxidant and a desulfurizing agent are added into the steel ladle in batch; and 2 to 3 kilograms of the refining slag and2 to 6 kilograms of the deoxidant and the desulfurizing agent are added into one ton of molten steel obtained by the smelting. The method provided by the invention has the excellent desulfuration effect, and can reduce the impurity content of the steel obviously.

The invention discloses a completely degradable high shock resistance composite which comprises the following components in parts by weight: 20-80 parts of natural fiber and 20-80 parts of poly(butyleneadipate-co-terephthalate) (PBAT) fiber. The invention further discloses a preparation method and an application of the completely degradable high shock resistance composite. The composite adopts the PBAT fiber as a base material, so that the composite has very excellent shock resistance and is not easy to break. In addition, a reinforcing phase and a base body of the composite are degradable materials, so that the composite is less harmful to an environment, cannot result in white pollution, and meets a requirement of sustainable development.

The invention relates to a natural fiber composite board and a manufacturing method and application thereof. The natural fiber composite board is prepared from the following raw materials by weight: 35 to 60% of a thermoplastic resin, 30 to 55% of a natural fiber, 0 to 9% of maleic anhydride graft and 0 to 1% of a coupling agent. The procedures consisting of mixing, washing and starching, weaving, desizing and hot pressing are carried out so as to form a natural fiber reinforced thermoplastic resin board which is used for manufacturing of a mobile phone protective shell, an IPAD shell, a musical instrument, a box or a helmet. Compared with the prior art, the natural fiber composite board provided by the invention has the advantages of great strength, stable performance, effectively controllable thickness direction, etc.

The invention provides eucommia ulmoides extract and an application thereof in treatment of osteoporosis, and belongs to the technical field of traditional Chinese medicine extraction. The eucommia ulmoides extract comprises the following components in parts by weight: 20-50 parts of eucommia ulmoides petroleum ether extract and 10-30 parts of eucommia ulmoides ethanol extract; the eucommia ulmoides extract can be effectively used for treating the osteoporosis by controlling the weight part ratio of the eucommia ulmoides petroleum ether extract to the eucommia ulmoides ethanol extract to be (1-5): 1. The invention further provides an extraction method of the eucommia ulmoides petroleum ether extract and the eucommia ulmoides ethanol extract. Due to the fact that different effective components are different in solubility in different solvents, the content of the effective components can be effectively adjusted by adopting different solvents for extraction; the used extraction separationmethod is simple and easy to implement; and the osteoporosis treating effect is good.

The invention relates to the technical field of water treatment and provides a preparation method of a modified carbon nanotube adsorbent. The preparation method comprises the following steps: executing purification to obtain purified multi-walled carbon nanotubes, executing magnetizing to obtain magnetic carbon nanotubes, and executing crosslinking to obtain crosslinked magnetic carbon nanotubes;the modified carbon nanotube adsorbent is prepared by a modification step, the steps are matched with one another, so that the supporting amount of ferroferric oxide is remarkably increased, the ferroferric oxide is uniformly attached to the carbon nanotubes, and the adsorption effect of the modified carbon nanotube adsorbent on metal ions is remarkably improved.

The present invention discloses a specific whole nutritious formula food for patients with diabetes and a preparation method thereof. The specific whole nutritious formula food for the patients with the diabetes contains high quality proteins, reasonable fatty acid ratio, low GI-value carbohydrates and rich dietary fibers, and is combined with multivitamins, minerals and trace elements of chromiumand selenium. Aiming at metabolism characteristics of the diabetes, the provided whole nutritious formula food is nutritionally balanced and suitable for the consumption of the patients with the diabetes, can effectively improve disorder of glucose and lipid metabolism, improves sensitivity of insulin, and reduces and avoids occurrence of diabetic complications.

Disclosed are a carbon fiber/ABS composite material for 3D printing and a preparation method thereof. The carbon fiber/ABS composite material for 3D printing, with good processing performance, low volume shrinkage, light weight and high strength, is prepared by the aid of the advantages of high strength, high modulus, light weight and the like of carbon fibers. The mass percentage of the carbon fibers in the carbon fiber/ABS composite is regulated, the carbon fibers are compounded with high-impact-resistant butadiene-styrene-acrylonitrile ternary copolymer powder and high-flow styrene-acrylonitrile binary copolymers, the thermal property and processability of the carbon fiber/ABS composite material are regulated, and accordingly, the carbon fiber/ABS composite material is suitable for the3D printing technology. By the carbon fiber/ABS composite material for 3D printing, a group of wrenches, different in thickness, length, aperture and shape, are designed and printed through adjustmentof the printing temperature, the printing layer thickness and the filling mode of a printer. The 3D-printed wrenches made from the carbon fiber/ABS composite material are lightweight and are 1/6 of an ordinary iron wrench; the preparation method is simple, efficient, flexible and controllable; the wrenches have high safety performance and are especially provided for operators working aloft, thereby having positive application significance.

The invention discloses a drosophila culture medium and a preparation and subpackaging method thereof, and relates to the technical field of drosophila culture media. The proportion of various nutritional ingredients in a drosophila culture medium formula is optimized. Meanwhile, a methylparaben preservative is added to the culture medium, the preservative capacity is enhanced, and the agar content in the drosophila culture medium is optimized, and the hardness is optimized to make the drosophila culture medium suitable for growth of drosophila. Penicillin and streptomycin are added to effectively inhibit the growth of bacterial microorganisms; the antibacterial property of the culture medium is improved, and the performance test data show that each pair of drosophila of the drosophila culture medium prepared by the invention gives birth to 74.6 offspring, namely 74.6 offspring per pair which is much higher than the existing 43.4 offspring per pair.

The invention belongs to the technical field of building materials, relating to a heat insulating member with a flexible positioning member and a connecting member thereof. The heat insulating member with the flexible positioning member is characterized in that one side face or two side faces of a heat insulating plate are dipped with waterproofing layers, a protecting layer is arranged outside the other side face of the heat insulating plate or the waterproofing layers of the two side faces, and flexible fibers outwards extending out of the protecting layer or the heat insulating plate are arranged in the protecting layer or the heat insulating plate. The connecting member of the heat insulating member with the flexible positioning member is characterized in that the cross section of a positioning member made of fiber reinforced plastics is in a straight line structure with an anchoring hole or a U-shaped structure or a positioning edge outwards extends at the end of the side edge of a U-shaped opening, and the positioning member and a flexible heat insulting material forms the connecting member capable of filling in a gas between the adjacent two heat insulating plates. The heat insulating member has the advantages of light weight, high strength, good heat insulating effect, firm positioning and strong wave adsorbing and shielding capacity.

The invention discloses a separation method of alfalfa extract active components in alfalfa, which comprises the following steps: (a) drying alfalfa, soaking with ether; (b) adding distilled water into the product of step (a), performing boiling reflux extraction, combining the extract I, separating residues; (c) adding 60%-70% methanol into the residues of step (b), performing reflux extraction; (d) allowing the methanol in step (b) to precipitate, separating to obtain a precipitate of alfalfa polysaccharide, concentrating the separated filtrate to have no alcohol smell; (e) extracting the filtrate concentrate of step (d) with n-butyl alcohol, precipitating with ethyl acetate, separating the precipitate, washing the precipitate with ether twice to obtain alfalfa saponins; (f) eluting the concentrate in step (c) by a S-8 macroporous resin column with methanol as a solvent and with a volume ratio of methanol to water of 4:1, so as to obtain alfalfa flavones. The invention provides a separation method of alfalfa extract active components in alfalfa, which separates alfalfa extract active components by the same process, thus saves solvents and energy consumption, and facilitates adjustment of active component contents.

The invention discloses a flame retardant moisture-curing polyurethane hot melt adhesive with excellent aging resistance, and a preparation method thereof. The hot melt adhesive comprises 1-20 parts of polyether diol, 1-50 parts of flame retardant polyether polyol, 1-40 parts of liquid polyester diol, 1-40 parts of crystalline polyester diol, 1-45 parts of a phosphorus-containing flame retardant polysilicone polyacrylate copolymer, 20-60 parts of isocyanate, 0.01-1 part of a catalyst, 0.1-1 part of an antioxidant and 0.1-2 parts of a silane coupling agent. Poly(methacryloxypropyl mono-terminated dimethylpolysiloxane-random-2-hydroxyethyl methacrylate phosphate-random-butyl acrylate-random-hydroxyethyl methacrylate) is firstly synthesized, and then is added to a polyurethane prepolymer, anda silicone acrylate copolymer segment and a reactive flame retardant are introduced, and a hydroxy-containing acrylic functional monomer makes the phosphorus-containing flame retardant polysilicone polyacrylate copolymer partially participate in the synthesis reaction of the polyurethane prepolymer, so components in the above formula have efficient synergistic effects, and the aging resistance and the flame retardation property of the polyurethane hot melt adhesive are improved.

The invention relates to a disk-type assembled bagged catalytic distillation filler, which structurally comprises an assembly A and an assembly B, wherein the assembly A is a rectangular catalyst bag formed through seaming and is filled with catalyst particles; the assembly B is a regular filler sheet; and the regular filler sheet of the assembly B and the catalyst bag of the assembly A are tightly stacked in parallel and are curled into a disk-type spiral structure and then fixed by using a banding sheet to form the catalytic distillation filler. The catalyst bag is adjustable in seaming size, the loading density of the catalyst is adjustable, the content of the catalyst is adjusted and the utilization rate of the catalyst is improved. The assembly A and the assembly B are alternately arranged, so that flowing of a liquid is improved by the regular filler sheet, uniform distribution of gas and liquid phases is ensured, a reactant and a product are continuously separated to the tower top and the tower bottom, the mass transfer process is promoted and the reaction rate is improved. The catalytic distillation filler is of the disk-type spiral structure and the catalyst bag and the regular filler sheet are arranged at an interval, so that uniform distribution of gas and liquid phases is improved, and meanwhile, the pressure drop can be reduced.

Pressureless sintering silicon carbide comprises the following components by mass: 80% to 90% of silicon carbide, 6% to 9% of resin, 0.5% to 0.8% of boron carbide, and the balance release agent. The preparation process for processing the pressureless sintering silicon carbide includes first stirring raw materials for 15 to 25 hours through a powder mixing machine to completely mix the raw materials, conducting spraying pelleting on the raw materials in the material mixing machine, forming powder materials after pelleting in press mode through a press, then filling the powder materials into a sintering furnace, conducting vacuumizing to -0.01MPA, stopping vacuumizing when the temperature rises to 1200 DEG C, filling argon into the sintering furnace to the normal pressure, then enabling temperature to rise to 1800 DEG C, keeping warm for 30 minutes, then continuously enabling the temperature to rise to the range from 2150 DEG C to 2200 DEG C, keeping warm for 30 to 50 minutes and enabling the powder materials to be naturally cooled. Due to the fact that fine powder materials are selected, compression density of product green bodies is improved, resin content is adjusted, the silicon carbide powder materials can conduct chemical reaction more fully in the sintering process, the density can reach 3.18g/cm<3>, and the hardness can reach 2400 HV0.5. The pressureless sintering silicon carbide has better abrasion resistance due to the fact that the density, the hardness and the compression strength are all improved.

The invention discloses a moisture-curable type organosilicon-modified flame-retardant polyurethane hot melt adhesive and a preparation method thereof. The hot melt adhesive is characterized by comprising 5-15 parts of polyether diol, 1-25 parts of liquid polyester diol, 1-40 parts of flame-retardant polyether polyol, 1-25 parts of crystalline type polyester diol, 5-40 parts of hydroxyl-terminatedphosphorus-containing flame-retardant poly organosilicon acrylate copolymer, 10-40 parts of isocyanate, 0.1-1 part of catalyst, 0.01-1 part of antioxidant, and 0.1-2 parts of silane coupling agent. According to the invention, hydroxyl-terminated poly(monomethacryloxypropyl terminated polydimethylsiloxane-random-methyl methacrylate-random-butyl acrylate-random-2-hydroxyethyl methacrylate phosphate) is firstly synthesized, then is added to a polyurethane prepolymer, an organosilicon acrylate copolymer chain segment and a reactive flame retardant are introduced, so that the chemical aging resistance and flame retardancy of a polyurethane colloid are further improved.

The invention discloses micro-nano particle added composite soldering paste, belongs to the technical field of lead-free composite brazing filler metal, particularly relates to micro-nano wrapping particle added enhanced tin-antimony-series composite soldering paste and a preparing method thereof, and mainly solves the problems that Sn-Sb series brazing filler metal in high-temperature brazing filler metal at present is poor in wettability, thermal conductivity and mechanical performance, and application and popularization of the Sn-Sb series brazing filler metal are limited. The novel composite soldering paste is mainly characterized in that compared with SnSb series soldering paste, wettability is good, and mechanical performance is excellent. The brazing filler metal is composed of 1%-5% of Cu@Ag core-shell particles and 95%-99% of SnSb, the Sn-Sb soldering paste serves as a base body, and reinforced phase Cu@Ag particles are added for achieving. The method comprises the steps thatfirstly, the Cu@Ag core-shell particles are prepared; secondly, scaling powder is prepared; and thirdly, the composite soldering paste is prepared through the Cu@Ag core-shell particles and the Sn-Sbseries soldering paste in a mechanical mixing manner. According to the composite soldering paste, the microstructure of welding spots is refined, and the wettability and shearing strength of the brazing filler metal are greatly improved. The micro-nano particle added composite soldering paste is used for preparing Sn-Sb series composite brazing filler metal which is composite brazing filler metalconforming to the development tendency of the electronic industry.

The invention discloses a color film substrate for an OLED and a preparation method thereof, and an OLED display device. The color film substrate includes a substrate and multiple color resist blocks,wherein the multiple color resist blocks are located on the substrate, colors of the multiple color resist blocks are not completely the same, the multiple color resist blocks respectively includes afirst color resistance portion and a second color resistance portion, the orthographic projection of the second color resistance portion on the substrate is located at the center of the orthographicprojection of the color resistance block on the substrate, and the transmittance of a material forming the second color resist portion to the light emitted by the OLED is lower than the transmittanceof a material forming the first color resist portion to the light emitted by the OLED. The color film substrate is advantaged in that the structure is simple, the OLED display device is made to be less prone to a pixel edge darkening phenomenon, uniformity of display brightness is strong, and the display effect is good.

The invention relates to a preparation method of a structured lipid with a long carbon chain and low calorie. The preparation method is mainly characterized by comprising the steps of dissolving glycerin and rice bran wax (of which the mol ratio is (2:1)-(7:1)) into isooctane and tert-amyl alcohol solvents (of which the volume ratio is 7:3) in a concentration of 10%; placing on a magnetic stirrer with a speed of 200rpm/min; heating at 50-70 DEG C, and stirring until substrates are uniformly mixed; adding 4-10% of lipase in percentage by weight, and reacting for 6-36 hours; after completing reaction, removing lipase in a product by virtue of filtration, removing organic solvents by virtue of rotary evaporation, then removing unreacted glycerin by virtue of water washing, and performing vacuum drying to obtain a powdered solid product. The preparation method disclosed by the invention is low in cost and simple in experimental operation, can be used for respectively obtaining triglyceride, diglyceride and monoglyceride by controlling different reaction conditions, and can be used for determining applications of the product according to the characteristics of melting points.

The invention provides a 5052 aluminum alloy with high bending forming performance. The 5052 aluminum alloy comprises the following steps: 2.21wt%-2.5wt% of Mg, 0.151wt%-0.17wt% of Cr, 0.05wt%-0.1wt% of Cu, 0.02wt%-0.05wt% of Ti, 0wt%-0.05wt% of Zn, 0wt%-0.20wt% of Si, 0wt%-0.3wt% of Fe, 0wt%-0.001wt% of Na and the balance of Al. Compared with the existing 5052 aluminum alloy, the 5052 aluminum alloy provided by the invention adjusts the relative contents of Mg and Cr strengthening elements and controls the content of grain refining element Ti and the contents of harmful impurity elements, namely Fe, Si, Na and the like, so that the aluminum alloy which is different from the element composition of the existing 5052 aluminum alloy is obtained, and the prepared 5052 aluminum alloy has good bending forming performance.

This invention discloses a debonding coating composition based on organopolysiloxane containing (meth) acrylate groups that can be cured by radiation. The debonding coating composition comprises an additive that can influence the debonding degree. The additive is obtained by reacting MQ resin and organopolysiloxane containing (meth) acrylate groups.