121results about How to "Meet material requirements" patented technology

The invention relates to a high-impact high-stiffness polypropylene rotational molding material and a preparation method thereof. The rolling plastic rotational molding material comprises the following raw materials: by weight, 100 parts of polypropylene, 0-30 parts of polyethylene, 0-0.1 part of a crosslinking agent, 0-0.15 part of an auxiliary crosslinking agent, 1-10 parts of an elastomer, 0.1-0.5 part of an antioxidant, 0-10 parts of a nano filler, 0.1-0.5 part of a dispersing lubricant and 0-0.4 part of a surface treatment agent. According to the invention, the crosslinkable polyethylene is added in a polypropylene melt mixing process for melt curing to obtain the high-impact high-stiffness polypropylene modified rotational molding material with a semi interpenetrating network structure, and the high-impact high-stiffness polypropylene modified rotational molding material can meet the material requirements of vehicles and other different fields. The curing reaction of the polyethylene belongs to the in situ curing, the material has the unique semi interpenetrating network structure, different components are mutually bitten or buckled, the compatibility between the polyethylene and polypropylene resin can be improved, and the performance advantages of the both are full played.

The invention discloses a resin composition which comprises the following solids by weight: (a) 100 parts of a bismaleimide resin prepolymer, (b) 5-80 parts of cyanate ester, (c) 0-50 parts of a flame retardant and (d) 0-65 parts of inorganic filler, wherein the bismaleimide resin prepolymer is obtained by carrying out reaction on an allyl compound and bismaleimide resin and the ratio of bismaleimide resin and allyl compound by weight is 100: (10-120). According to the resin composition disclosed by the invention, by adopting siloxane containing allyl at the tail end as a modifier of bismaleimide resin and limiting the content of siloxane in the modifier, unreacted siloxane resin is not generated in reaction, so that the advantages and characteristics of siloxane resin can be fully exerted and the interlaminar adhesive force at the high temperature is greatly improved. Moreover, the thermal expansion properties of the solids are optimized, so that the resin composition satisfies the requirements on high precision electronic substrate materials.

The invention relates to a self-clean self-purification cement-based facing material and a production method thereof. The self-clean self-purification cement-based facing material comprises the following components in parts by weight: 20-30 parts of white silicate cements, 5-10 parts of mineral admixtures, 0-20 parts of quartz sands of 20-30 meshes, 20-30 parts of quartz sands of 40-70 meshes, 20-30 parts of quartz sands of 70-100 meshes, 1-4 parts of kieselguhr, 2-4 parts of zeolite, 0.2-0.6 part of nanometer titanium dioxide, 0.5-2.0 parts of EVA redispersible latex powder, 0.2-0.8 part of organic silicon water repellent, 0-1 part of ferric oxide inorganic pigment and 0.1-0.7 part of other chemical additive. The self-clean self-purification cement-based facing material, provided by the invention, has the advantages of good self-clean property, good self-purification property, good air purification capacity, good adhesive property, good construction property, good endurance quality, higher compression strength and the like, when the self-clean self-purification cement-based facing material is used for decoration of facings of an inner wall space and an outer wall space of a building, the air purification effect and the decoration effect are good, and the self-clean self-purification cement-based facing material can be applied for decoration engineering of all kinds of facings of walls of buildings.

The invention provides an alloy forged steel and its heat treatment method and use. The alloy forged steel comprises: by mass, 0.26 to 0.35% of C, 0.15 to 0.39% of Si, 0.85 to 1.50% of Mn, less than or equal to 0.02% of P, less than or equal to 0.01% of S, 0.80 to 2.00% of Cr, 0.70 to 2.00% of Ni, 0.35 to 1.00% of Mo, and the balance Fe and other elements. Through reasonable proportioning of alloy elements such as Mn, Ni, Cr and Mo, and main chemical components such as C and Si in forged steel materials, through appropriate heat treatment processes, grains are refined; hardenability and heat intensity properties of the alloy forged steel are improved; normal temperature strength and high temperature strength of the alloy forged steel are greatly improved; and excellent comprehensive mechanical properties of the alloy forged steel are obtained.

The invention provides a wind-driven generator electrothermal ice melting rotor blade, an electrothermal chip and a forming device and a method. The electrothermal chip comprises glass fiber cloth, and a carbon fiber bundle is sewn on the glass fiber cloth. The forming device comprises a forming machine, a feeding support arranged in front of the forming machine, and a heating device and a material receiving device sequentially arranged behind the forming machine, wherein a plurality of rolling?shafts are arranged on the feeding support; and the?rolling?shafts are winded with?carbon fiber. As the carbon fiber bundle is sewn on the glass fiber cloth by the forming machine, the manufacturing technology is simple and integration is high; as the electrothermal chip is composed of glass fiber cloth and carbon fiber and free of metal, material demands of the rotor blade can be met; and the glass fiber cloth is high in permeability, the electrothermal chip is poured in the rotor blade, the pouring technology demand of the rotor blade can be met, the manufactured electrothermal ice melting rotor blade can use thermal energy generated after the carbon fiber is electrified, and the rotor blade can be prevented from being frozen.

The invention relates to a polycarbonate composite material for 3D printing and a preparation method thereof. Magnesium borate whiskers and graphene oxide are introduced into polycarbonate, so that not only is the polycarbonate strengthened, but also carboxyl, hydroxyl and epoxy functional groups can be promoted to be connected with the polycarbonate and to be uniformly dispersed, the thermal superconductivity of the graphene oxide allows powder in the polycarbonate to be uniformly heated and solidified, thereby reducing the thermal shrinkage of a product during 3D printing. Further, by virtue of polyelectrolytes, the polycarbonate powder is subjected to surface modification at a fluidized bed, so that the surface of the polycarbonate powder is more in a spherical shape, the mobility of the polycarbonate is greatly improved, the powder agglomeration is effectively prevented, and the polycarbonate is suitable for a 3D printing material.

The invention provides an AI based low-confidence sample processing method and system of board sorting. Image data of at least one format of a low-confidence sample is obtained; an image of at least one format of the low-confidence sample is presented in a display device; a new class marked by the low-confidence sample is obtained; and a training method is input to the marked low-confidence sample, and a new classification model is obtained via re-training. According to the method and system, the low-confidence sample can be discovered continuously and utilized, so that the classification precision of a machine learning method is improved gradually.

A method for preparing the product of the soft metal difficult to machine, such as Mg-alloy or MgAl-alloy, features a vacuum sputtering method is used for modifying the surface of said product. Said Mg-alloy product has high surface quality.

A vehicle inner decoration package support guard board substrate material and manufacturing technology thereof are disclosed. The substrate material is composed of polypropylene fibers, fibrilia and polyester fibres. The manufacturing technology include: making a synthetic fabric felt; putting the synthetic fabric felt into an open-type oil heating mold; heating it in the mold; taking out the fabric felt in the melted state and putting it in the mold on the hydraulic machine; maintaining the fabric felt in the mold on the hydraulic machine for 2.5-3.5 minutes; and taking out the molding substrate. The invention has advantages that: the backbone material adopts environment protection material, avoids deleterious substance; the present material improves the heat resisting temperature ( 130 EDG C ) of the material based on the original technique PP+ fibrilia series scheme, which satisfy the requirement of the vehicle package support guard board material; at the present, the present material overpasses the consent of the Germany Audi company corporation, which embodies on the vehicle type Audi A6L.

The invention belongs to the field of electronic ceramic materials, and particularly provides a magnesium-aluminum-silicon low-thermal-expansion-coefficient microcrystalline glass material and a preparation method thereof which are used for overcoming the problems of high sintering temperature, large thermal expansion coefficient, low bending strength, high dielectric constant, high dielectric loss and the like of an existing ceramic material. The magnesium-aluminum-silicon low-thermal-expansion-coefficient microcrystalline glass material and the preparation method thereof have the advantagesthat the prepared low-thermal-expansion-coefficient microcrystalline glass has low thermal expansion coefficient (1.0-2.0*10<-6> per DEG C), high bending strength (150-200 MPa), low dielectric constant (5.0-5.5 @1 MHz), low dielectric loss (1.5-3.5*10<-3> @1 MHz) and reliable insulation, thereby satisfying the requirements of an LTCC electronic package substrate material; the magnesium-aluminum-silicon low-thermal-expansion-coefficient microcrystalline glass material can achieve low-temperature sintering at 900-950 DEG C, the process is simple, the stability is high, the production cost is low, and the magnesium-aluminum-silicon low-thermal-expansion-coefficient microcrystalline glass material is suitable for industrial mass production.

The invention belongs to the field of electronic ceramic materials, and particularly provides high-strength low-thermal-expansion-coefficient microcrystalline glass and a preparation method thereof. The microcrystalline glass is used for solving the problems that an existing ceramic material is high in thermal expansion coefficient (poor in matching degree with a silicon chip), low in bending strength, high in dielectric constant, large in dielectric loss and the like. The high-strength low-thermal-expansion-coefficient microcrystalline glass which is low in thermal expansion coefficient (2.5-3.5*10<-6>/DEG C), high in bending strength (200-280 MPa), high in Young modulus (90-110 GPa), low in dielectric constant (5.0-5.5@1MHz), low in dielectric loss (0.3-0.5*10<-3>@1MHz), insulating and reliable can be prepared from the components and through the preparation technology, and requirements of LTCC electronic packaging substrate materials are met; meanwhile, the microcrystalline glass issimple in process, high in stability, low in production cost and suitable for industrial batch production.

The invention relates to a method for preparing low-oxygen high-pure metal hafnium powder; the low-oxygen high-pure metal hafnium powder has the purity of greater than 99.5wt% and the oxygen content being smaller than 0.15 wt%. The preparation method comprises the following steps: a. filling metal hafnium powder, a deoxidizing agent and a molten salt into a crucible; b, putting the crucible into a reaction tank, sealing the equipment, vacuumizing and inflating argon gas to wash the crucible, heating and deoxidizing, then performing constant-temperature and thermal-insulating deoxidization, cooling and discharging at the end of the deoxidization; c, pickling the discharged product, then washing with de-ionized water, sieving and drying the obtained product, namely, the product of the low-oxygen high-pure metal hafnium powder. The molten salt system is capable of effectively removing impurities in the metal hafnium powder, in particular, remarkably reducing the oxygen content in the hafnium powder; and the prepared low-oxygen high-pure metal hafnium powder satisfies the material requirement of high-end products.

The invention relates to a thin film solar cell as well as a base band and a preparation method thereof, in particular to a thin film solar cell base band. The thin film solar cell base band comprises a substrate layer, a diffusion impervious layer and a pure copper layer, wherein the substrate layer is made of alloy materials; the diffusion impervious layer is formed on the substrate layer; and the pure copper layer is formed on the diffusion impervious layer. The invention also relates to application of the thin film solar cell base band in preparing a solar cell, a thin film solar cell comprising the thin film solar cell base band, the thin film solar base band and a preparation method of the thin film solar cell. The thin film solar cell and the base band thereof have the advantages of thin thickness and good mechanical property without polluting functional layers.

The invention relates to the technical field of polycarbonate (PC), in particular to the polycarbonate used for blow molding and a preparation method thereof. The raw material in the preparation method comprises the following components in percentage by mass: 98 to 100 percent of the polycarbonate, 0.1 to 0.5 percent of chain extender, 0.1 to 1.0 percent of antioxidant, 0.01 to 0.5 percent of toner, and 0.01 to 0.5 percent of ultraviolet absorber. The polycarbonate used for the blow molding not only can be prepared simply and conveniently but also can greatly improve the yield of bottle blowing grade polycarbonate and reduce the cost; besides, blow molding uses prove that the performance of the polycarbonate for the blow molding can completely replace the bottle blowing grade polycarbonate of companies such as American GE, Germany Bayer and the like, and the polycarbonate for the blow molding meets requirements on materials for preparing drinking water buckets.

The invention discloses synchronous grouting slurry for shield tunneling, which is prepared from materials including desulfurization gypsum generated in a smoke desulfurizing process of a thermal power plant. The slurry comprises the following dry material components in percentage by weight: 68 percent of sands, 20 percent of coal ash, 3 percent of bentonite, 2 percent of lime, and 7 percent of the desulfurization gypsum. The invention also provides a method for preparing the synchronous grouting slurry for field tunneling, which comprises the following steps of: weighing the sands, the coal ash, the bentonite, the lime and the desulfurization gypsum which form the dry materials; uniformly mixing and stirring the dry materials; adding proper water and additives; uniformly mixing and stirring; sampling an index of detection performance; and preparing to grout the finished product. By the method, industrial wastes of the thermal power plant are sufficiently utilized to achieve the effects of reducing slurry cost and reducing environmental pollution, the developing orientation of energy conservation and emission reduction is fulfilled, and the slurry has the advantages of high proportion, low denseness, high shearing resistance, good flow filling performance, improved later strength of slurry and the like and can be used as synchronous grouting slurry for shield tunneling.

The invention provides a preparation method of a high-wear-resistance WC-based hard alloy. A certain amount of molybdenum powder, chromium carbide powder and vanadium carbide powder are added before tungsten powder carbonization, and are mixed with carbon powder by a wet grinding mode, so that the powder mixing uniformity is greatly improved; the doped molybdenum powder, chromium carbide powder and vanadium carbide powder can achieve an effect of inhibiting growth of tungsten carbide grains in the tungsten powder carbonization process in the step 2 and the alloy sintering process in the step 4; and meanwhile, in the tungsten powder carbonization process, molybdenum, chromium and alum can be largely or slightly dissolved in tungsten carbide to form (W, Mo, Cr, V) C solid solution, so that guarantee is provided for formation of (W, Mo, Cr, V) C solid solution powder with fine and uniform particle size in the later tungsten powder carbonization process, and the purpose of reinforcing physical performances of the tungsten carbide grains and alloys thereof is achieved. The prepared non-bonded-phase WC-based hard alloy is high in hardness and excellent in wear resistance, and can satisfythe high wear resistance requirements of water jet sand pipes and fracturing nozzles on materials.

The invention discloses a corrosion-resistant and wear-resistant high-conductivity alloy for sockets. The alloy comprises the following components in percentage by weight: 21-23% of zinc, 2-3% of aluminum, 0.2-0.4% of phosphorous, 1.5-2.5% of silver, 0.1-0.5% of yttrium, 1.5-2.5% of chromium, 0.3-0.5% of nickel, 1-2% of vanadium, 0.1-0.3% of lead and the balance of copper. The invention also provides a preparation method of the corrosion-resistant and wear-resistant high-conductivity alloy for sockets. The preparation method comprises the steps such as smelting, draw casting, hot rolling, solid solution, finish rolling and aging treatment. The corrosion-resistant and wear-resistant high-conductivity alloy for sockets disclosed by the invention has relatively high conductivity and hardness, good corrosion resistance and good properties in elasticity, strength and the like, basically reaches or exceeds the properties of common tin-phosphorous bronze materials, can completely meet the material requirements of socket sleeves and is a very proper substitute material; due to low dosage of precious materials, the cost is greatly reduced; and meanwhile, the preparation method is simple in process and easy to implement and thus is suitable for industrial mass production.

The invention discloses a preparation method of a three-layer gradient GIS/GIL supporting insulator, which aims at reducing the electric field intensity of an insulator along a surface or a local region as an optimization target, and solves the optimal spatial distribution of a dielectric constant in the supporting insulator by using a variable density algorithm. According to the optimization result, the dielectric constant change area is divided into a dielectric constant transition area and a high dielectric area, the combination contour of the dielectric constant transition area is extracted, and then a hollow dielectric constant transition area with a support and a resin sprue gate is generated through photocuring 3D printing; a thermocurable high-dielectric composite material is prepared by adopting a high-dielectric filler/polymer blending mode, and then the high-dielectric composite material is poured into the dielectric constant transition area and integrally put into a metal mold for fixing; and a thermocurable high-dielectric composite material is prepared in a low-dielectric filler/polymer blending mode, then the thermocurable high-dielectric composite material is poured into a metal mold, and the three-layer gradient GIS/GIL supporting insulator can be obtained after curing is completed in vacuum.

The invention discloses a mobile terminal component. The mobile terminal component comprises a ceramic component, a plastic component and a bonding layer; the bonding layer is used for connecting theceramic component and the plastic component; a gravel layer is arranged on the surface, making contact with the bonding layer, of the ceramic component, and the particle size D50 of gravel in the gravel layer ranges from 20 m to 400 m. According to the component, the binding force of the ceramic component and the plastic mold is high after injection molding, no offset or gap exists at the joint ofthe ceramic component and the plastic component, the problem that fine substances such as dust and scurf are adsorbed and embedded can be effectively avoided, and the texture and the aesthetic feeling of the ceramic-plastic composite component can be improved. The invention further provides a preparation method of the mobile terminal component, and the preparation method is simple in technological process, high in operability and suitable for mass production of the injection molding ceramic components in the mobile terminal mold.