1686results about How to "Solve the strength problem" patented technology

The invention provides a low-expansion coefficient polyvinyl chloride alloy material and a manufacturing method thereof. The ingredients of raw materials of the alloy material comprise a polyvinyl chloride substrate, a heat-resistant modifier, a heat stabilizer, a lubricator, a filler and a processing agent, and the alloy material is manufactured by a melt blending technique. The processing agent and the filler in the ingredients of the raw materials of the invention are the processing agent that is subjected to modification by a new method and the filler that is subjected to organic treatment, and by means of a mechanochemical reaction, self-plastification, toughening and reinforcement of the PVC can be combined organically to improve compatibility and dispersity of the polyvinyl chloride, the filler and heat-resistant resin, thus settling the problem about the contraction between the improvement of heat expansion performance and heat resistance of the PVC, and processing performance, strength and toughness of the PVC; the polyvinyl chloride engineering plastic with low expansion coefficient, high heat resistance, high strength, high toughness, excellent aging resistance and outstanding processing performance is manufactured; the invention has extensive industrial market prospect and the manufacturing method thereof is simple in technology, convenient in operation and control, stable in quality and high in production efficiency.

The invention discloses a time sequence classification early warning method for a storage device. The method comprises the steps of collecting storage device parameters in real time; cleaning data; performing ARIMA time sequence analysis; and performing logistic regression analysis and early warning mechanism output. Under the background of a big data environment, time sequence prediction analysisis performed by adopting an ARIMA model according to historical data and hard disk SMART information obtained by statistics; the correlation between a SMART eigenvalue and a fault rate of the storagedevice is analyzed; and an eigenvalue more suitable for a Logistic model is selected out to perform classification prediction. A machine learning method is adopted for predicting the fault rate of the storage device, so that the problems of classification singleness and low early warning intensity in final prediction of the storage device are solved, the defects of hysteresis, low accuracy, pooractual early warning effect and difficult application to the big data environment for a disk early warning mechanism in the prior art are overcome, the occurrence probability of each early warning intensity can be predicted, and an effective solution is provided for real-time operation maintenance and monitoring in a data center environment.

The invention discloses pervious concrete and a construction method thereof. The pervious concrete comprises the following raw materials in percentage by weight: 13.1-15.9% of cement, 12.7-15.6% of river sand, 59.6-66.0% of stones, 3.7-3.9% of water and 4.5-5.0% of admixtures, wherein the admixtures comprise the following raw materials in percentage by weight: 45-50% of ultrafine mineral powder, 15-20% of heavy calcium carbonate, 15-20% of gypsum powder, 3-5% of polypropylene fiber, 5-10% of a polycarboxylate water reducing agent, 4.2-8.4% of adhesive powder and 2-5% of a pigment. The pervious concrete provided by the invention has relatively high water permeability, strength and durability; after the pervious concrete is applied to a practical engineering, the pervious concrete can greatly improve the problem of poor drainage of a hardened road surface, so that the development of the pervious concrete can be promoted.

The invention belongs to the technical field of environment protection, and relates to a device and a process for temperature difference crystallizing ammonia process desulfurization, which is especially suitable for the ammonia process modification and newly-built desulfurization of the original calcium process desulfurization device. The device comprises a desulfurization tower, a densifying device, a gas-liquid heat exchanger, a circulating pump, a concentration circulating pump, a magma pump, a concentration crystallization tank and a drying system, wherein the desulfurization tower, the circulating pump, the magma pump and the drying system adopt the devices in the original calcium process desulfurization; the lower part of the densifying device is provided with a gas distributor, andthe upper part thereof is provided with spray heads which are arranged in 2-3 layers; spray heads in the desulfurization tower are arranged in 2-4 layers, a liquid supplementation pipe is connected with the spray heads at the lowest layer in the desulfurization tower; the concentration crystallization tank is a tank with a conical bottom part; and the upper part of the concentration crystallization tank is provided with a pipeline to be connected with the bottom of the densifying device, the middle of the concentration crystallization tank is provided with a pipeline to be connected with theconcentration circulating pump, and the bottom is provided with a pipeline to be connected with the magma pump. The invention can farthest utilize the original devices on the premise of guaranteeing the normal desulfurization efficiency, thereby saving the investment, reducing the energy consumption and eliminating the secondary pollution.

The invention provides a 3D printing core material, which comprises photosensitive resin, a photoinitiator, a terminator, functional nanoparticles and a color additive, the fluidity and moulding speed of the prepared 3D printing core material is matched with a 3D printer, and the problems of low intensity and difficult coloring of the 3D printing material can be solved.

The invention discloses an independent tobacco cutting process and independent tobacco cutting equipment based on paper making method regenerated tobacco leaf processing characteristics. The process comprises the following process steps: opening a box, shoving tobacco leaves, loosening, regaining moisture, cutting, drying and mixing. The equipment comprises a box opening machine, a tobacco leaf shoving machine, a high-frequency-vibrating loosening machine, a moisture regaining machine, a cutting machine and a roller cut tobacco drying machine, wherein the mechanisms can be arranged and can operate alone or in combination through the connection by a material conveying and feeding mechanism. The process and the equipment can cut the boxed regenerated tobacco leaves independently according to the processing characteristics of the boxed regenerated tobacco leaves, thereby improving the effective utilization rate of the paper making method regenerated tobacco leaves, effectively retaining fragrance, improving visual quality, and making the prepared regenerated cut tobacco uniform in length and good in looseness so that the cut tobacco can be blended with other cut tobacco uniformly. The process and the equipment have high adaptability; meanwhile, according to the change in the form of supplied materials, 'three-step method' tobacco cutting adopted in the prior art is changed into one-step cutting with the same effect, the production efficiency is improved and the production cost is lowered.

The present invention discloses a concrete cement foaming insulation brick, taking a concrete perforated brick as a main body. The concrete perforated brick is injected with a cement foam material, so that the cement foam material and the concrete perforated brick are fully combined. By adjusting the formulation and improving the process, the present invention makes full use of industrial wastes such as fly ash and coal gangue, does not need autoclaved curing, and is small in investment and simple in process. The foaming brick produced by the present invention has excellent heat insulation and sound insulation properties, and is high in strength, good in impact resistance, low in moisture absorption, light in weight, compression resistant, good in weather resistance, environmental-friendly and energy-saving, and non-toxic. The brick has great market space and development prospects in the application field of building energy efficiency.

The invention relates to a production method of a homogeneous petroleum needle coke. The method comprises the steps of: (1) heating the raw material for needle coke production to a relatively low temperature of 400-480DEG C by a heating furnace, then leading the raw material into a coking tower to make the coking raw material form flowable intermediate phase liquid crystals; (2) when the low temperature fresh raw material charging stage is completed, gradually raising the temperature of a heating furnace outlet, and at the same time, charging the coking heating furnace with a fresh raw material and heavy distillate oil from a fractionating tower; and (3) when the materials in the coking tower reach a curing coking temperature, charging the coking heating furnace with the coking intermediate distillate oil generated in step (1), and simultaneously raising the coking heating furnace feed temperature to make the internal temperature of the coking tower reach 460-510DEG C, thus finishing high temperature curing of petroleum coke. The method provided in the invention can make the properties of needle coke at different parts inside the coking tower more uniform.

The invention discloses concrete healant, which comprises following components by weight percent: 30 to 55 percent of gelatinization materials, 40 to 65 percent of fine aggregates, 0.1 to 0.5 percent of water reducing component, 0.05 to 0.5 percent of early-strengthening component, 0.05 to 0.2 percent of delayed-coagulation component, 0.2 to 1.0 percent of nano materials, 0.5 to 1.0 percent of high-activity substances, 0.01 to 0.2 percent of water retention thickening component, 0.2 to 2.0 percent of polymer and 0.02 to 0.2 percent of defoaming agent. The concrete healant not only has characteristics of good mobility, fast strength development, high adhesion strength and small retraction, but also can fill active substances into original concrete gaps and can produce compact crystals, so that the cohesion strength of the new and the old concrete interfaces can be remarkably improved, and the concrete healant is applicable to the concrete mending projects of bridges, caves, industrial workshops and civil construction.

The invention discloses pipeline steel excellent in acid corrosion resistance on the seabed. The pipeline steel comprises, by weight, 0.020-0.050% of C, 0.10-0.30% of Si, 0.50-1.10% of Mn, 0.012% of P or less, 0.0015% of S or less, 0-0.20% of Cu, 0-0.30% of Cr, 0-0.20% of Ni, 0-0.25% of Mo, 0.030-0.055% of Nb, 0.020-0.050% of V, 0.010-0.025% of Ti, 0.010-0.050% of Al and 0.008% of N or less. A production method comprises the steps of heating after continuous casting and blank forming, rough rolling, precise rolling, cooling, reeling and cooling to indoor temperature. By means of the pipeline steel and the production method, an ideal complex-phase structure containing ultra-fine grain polygonal ferrite and a small number of methyl acrylate (MA) components which are distributed dispersively can be obtained, the Rt0.5 is equal to or higher than 485 MPa, the Rm is equal to or higher than 570 MPa, -20 DEG C KV2 is equal to or higher than 250 J, and -15 DEG C DWTT SA is equal to or higher than 85%. A hydrogen induced crack j (HICj) test and a sulfide stress corrosion cracking (SSCC) test indicate that no fracture or crack occurs.

The invention discloses short linen viscose fiber and a preparation method thereof. The viscose fiber is produced by preparing linen pulp from linen and then using the linen pulp. The preparation method comprises the following steps of: pre-processing, washing, digesting, washing, pulping, degritting, concentrating, alkali refining, whitening, performing acid treatment, washing, finely selecting, degritting, concentrating, papermaking, soaking, squeezing, smashing, aging, yellowing, grinding, dissolving, filtering, defoaming, filtering, spinning, drafting, cutting off, performing post treatment, drying, packaging and the like. The preparation method has the advantages that: the performance of bacterial resistance and bacterial resistance of the linen fiber can be kept better, a finished product has high whiteness, the production period is short, the problems of large digesting intensity, complicated digesting process and the like are solved, and the pollution generated during production is low.

The invention relates to a strong mapping digital twin system based on a virtual imaging technology. According to the system, a multi-information cooperative communication mechanism is established between digital twin bodies, morphological information, state information and behavior information of a physical entity system are collected through multiple sensors and sent to an edge computing node, and the edge computing node is responsible for receiving sensor information and carrying out edge computing processing on the received information; A virtual imaging technology is applied to project digital entities of the digital twin system into a real space in a three-dimensional visualization mode, meanwhile, state information of the physical entities is displayed in a virtual reality mode, thedetail display effect of the digital twin system is enhanced, and the requirements for multi-view observation and immersion experience are met; According to the system, strong information mapping isestablished between a physical entity and a digital entity through the process, and it is guaranteed that information is transmitted between twin bodies in real time at a high speed in an undistortedmode.

The invention discloses a neural network black box aggressive defense method based on knowledge distillation, and the method comprises the steps: selecting a plurality of sub-networks to construct a teacher network, softening the input vectors of softmax layers of all sub-networks, and then reloading the model parameters of the sub-networks for training to obtain a new sub-network; obtaining a prediction label of each sub-network, and taking all prediction labels as soft labels after averaging or weighted averaging; inputting the Image Net data set into a student network, and guiding student network training by adopting a soft label, a data set hard label and a black box model special label to obtain a substitution model; adopting a white box attack algorithm to attack the substitution model to generate an adversarial sample sequence, adopting the adversarial sample sequence to attack the black box model, and selecting an adversarial sample successfully attacked in the adversarial sample sequence; and adding the successfully attacked countermeasure sample into a training set of the black box model, and performing countermeasure training by adopting the updated training set to generate the black box model with attack defense.

The invention pertains to airplane fatigue and damage-tolerance testing technologies, and relates to a damage-tolerance testing method for the whole wing spar of an airplane. The method comprises the steps of: (I) choosing a part with large load from the whole wing spar for serving as a testing part examining segment, (II) producing two same testing parts according to the examining segment, (III) reserving an interval of 20 to 30mm between the two back-to-back testing parts which are respectively provided with a coating in the upper part and the lower part (the coating is connected with an upper spar edge strip and a lower spar edge strip to form a case segment), (IV) fixing the root of the testing case segment completing assembly on a load-bearing wall, (V) exerting concentrated load at one end of the testing parts to simulate the bending moment of the spar at the testing segment and the shearing force of a web, without considering the influence of the shearing flow of the coating and (VI) using a finite element method to conduct damage tolerance analysis on the testing parts and comparing testing results. The method solves the difficulty that the crack expansion and remaining strength of the present airplane whole wing spar structure lack theoretical evidence; and the design of the testing parts adopts a method of simultaneously conducting tests to the two back-to-back testing parts, thereby eliminating the distortion of a single spar.

The invention relates to a polyurethane anti-corrosion priming paint sprayed on a steel structure in an abyssal environment. The priming paint is polyurethane modified epoxy solvent-free priming paint; after being subjected to polyurethane modification, the epoxy solvent-free priming paint has higher compressive strength than a common solvent-free epoxy coating, and has higher adhesion strength with the steel structure and sprayed polyurethane. After the matching of the polyurethane modified epoxy solvent-free priming paint and the spray polyurethane, the drawing strength between the whole coating and the steel structure is tested to be larger than or equal to 10 MPa. The polyurethane modified epoxy solvent-free priming paint solves the problems of low compressive strength and polyurea adhesion strength of the common solvent-free epoxy priming paint used in the abyssal environment, and also solves the problem of low steel structure adhesion strength of a polyurethane type priming paint in the abyssal environment.

The invention discloses a method for preparing an ultra-fine crystal grain high-strength high-toughness copper alloy strip. The method comprises the following steps of: performing hot-rolling with the distortion of 40 to 70 percent after performing high-temperature annealing on a copper alloy cast ingot to obtain a plate blank; performing cold-rolling with the distortion of 30 to 60 percent; performing intermediate annealing after the cold-rolling; after soaking the plate blank in liquid nitrogen for 5 to 30 minutes, taking the plate blank out and performing the cold rolling immediately; performing cryogenic treatment and the cold-rolling repeatedly after performing the cold-rolling; after accumulated strain capacity reaches 40 to 90 percent, performing low-temperature annealing to obtain the ultra-fine crystal grain high-strength high-toughness copper alloy strip with the average size of about 0.8 mu m, wherein the tensile strength of the copper alloy strip is 650 to 880 MPa and the elongation rate is 10 to 30 percent. The method has a simple production process and low processing cost, and can implement cold-deformation and annealing after the cryogenic treatment on a copper alloy on conventional production equipment; crystal grains are thinned by generated deformation twin and annealing twin, simultaneously both the strength and the tensility of the copper alloy are improved; therefore, the method has a very good industrial application prospect.

The invention discloses a manufacturing method for a microorganism heat-insulation building material. The manufacturing method for the microorganism heat-insulation building material comprises the following steps: taking a bacteria solution which has a mineral deposition function and is prepared from microorganisms and a corresponding nutrient solution as raw materials; directly carrying out mineral deposition on various lightweight aggregates or compounding inorganic or organic cementing materials; and carrying out microorganism inactivation and pore forming to obtain novel microorganism heat-insulation plates, heat-insulation blocks, heat-insulation concrete, heat-insulation mortar and the like. By the method, the physical and mechanical properties of an existing traditional heat-insulation material can further be improved through a microorganism mineralization function and an inactivation process. Microorganism mineral deposition products are used as cementing material manufacturingand modifying building heat-insulation materials, contradiction between strength and heat insulation of the heat-insulation materials can be solved effectively, cementing materials such as cement arereduced and are even prevented from being used, resource consumption are reduced remarkably, mine excavation frequency is reduced, pollution emission is eliminated, and environment stress and haze influence are relieved. The manufacturing method for the microorganism heat-insulation building material is an environmentally friendly building material manufacturing method, and has good economic benefit, environment benefit and social benefit.

The catalyst has metal oxide without copper and noble metal as main active component and the composite oxide of RE and transition metal as the catalytic assistant, heat stabilizing assistant, structure stabilizing assistant and active catalyst component support. The addition of the composite oxide of RE and transition metal raises the reaction activity of the catalyst as well as its strength and stability greatly. The preparation process may be co-precipitation one, isometric soaking one or hot decomposition one. In the co-precipitation process or soaking process, adhesive and pore creating agent are added, and the adhesive and pore creating agent is mixture water solution of organic acids, inorganic acids, pseudo-thin diasphore and polymer. The catalyst may be used in hydrogen source system of fuel cell with unstable operation.

The invention relates to drill collar steel and a preparation method thereof. The drill collar steel comprises the following components based on the total weight of drill collar steel: 0.41-0.47wt% of C, 0.15-0.3wt% of Si, 0.95-1.2wt% of Mn, 0.95-1.2wt% of Cr, 0.15-0.3wt% of Mo, 0.02-0.04wt% of Al, 0.01-0.03wt% of Ti, less than or equal to 0.02wt% of P, less than or equal to 0.015wt% of S, less than or equal to 0.2wt% of Ni, less than or equal to 0.2wt% of Cu, less than or equal to 0.05wt% of Sn, less than or equal to 0.0002 wt% of H, less than or equal to 0.007wt% of N and the balance of Fe;and T[O] is less than or equal to 0.0020wt%, and the A,B,C and D impurities are less than or equal to 1.5 levels. By using the preparation method, the problem that the strength of the drill collar steel is not matched with plastic toughness is solved.

The invention discloses double-foaming cellular concrete and a site production construction method thereof. The volume weight of the double-foaming cellular concrete ranges from 100 KG/M<3> to 400 KG/M<3>; the heat conduction coefficient is as little as 0.020 W/M.DEG C, and the intensity is up to 5 MPa. The double-foaming cellular concrete can be widely applied to the production of light-weight heat preservation materials such as roof heat preservation materials and external wall heat preservation materials and hanging pieces such as light-weight building hanging beams, and has the purposes of the filling of light-weight hollow bricks and hollow building covers; more importantly, the double-foaming cellular concrete can be applied to the construction of underwater facilities. The site production construction method for the double-foaming cellular concrete is simple in technology and simple and convenient to operate; by special equipment, full-automatic integrated productions, such as automatic foaming, metering and proportioning, are effectively realized; upon automatic control, the production construction of the double-foaming cellular concrete is finished highly efficiently at low cost.

The invention provides a rapid-hardening early-strengthening wearable concrete material for road repair and its preparation, wherein the material mainly comprises the following ingredients, steel slag powdered ore 40-80kg/m3, metakaolin 320-560kg/m3, alkaline exciting agent solution 200-300kg/m3, steel slag fine aggregates 630-1800kg/m3, steel fiber 62-156kg/m3, and polypropylene fiber 1kg/m3.

The invention relates to the nanometer plate surface glue equipment and the cloth glue that comprises the working platform, cloth hopper distributing nanometer fluid on the compound extractor, vibrating device connected with the cloth hopper, cloth applying device setting the glass fiber net on the nanometer glue band, and the scraping device and compression device. The compound extraction band moving horizontally on the working platform and forming nanometer band, setting glass fiber net cloth with tension on the nanometer band, compressing the glass fiber net cloth and the nanometer band into nanometer compound band, compressing the compound band tightly. It is heat and sound insulation, radiation resistant, and improved in product feature and reduced in production cost.

The invention discloses an environmental-protection composite quartz stone board. The environmental-protection composite quartz stone board comprises a ceramic tile used as bottom layer base material, and quartz store material is used as surface layer material, wherein the ceramic tile takes waste powder material in the production and processing of ceramic material, ceramics and artificial quartz stone, and waste mud caused by mould pressing as main materials, and the artificial quartz stone takes the mixture of waste store material, glass, quartz sand, unsaturated polyester resin, a curing agent, a coupling agent, an anti-aging agent, an anti-shrinking agent and a heat stabilizer as the main materials. According to the environmental-protection composite quartz stone board, the quality of the ceramics is enhanced, the cost of the quartz store is lowered, the application range of the quartz store is enlarged, and the product chain of the composite quartz stone board is enriched.

The invention discloses bio-based biodegradable multi-block copolymer as well as a preparation method and application thereof. The multi-block copolymer comprises a chain segment A and a chain segmentB; the chain segment A is fat-aromatic coplyester with number average molecular weight of 3000 to 100000, which is obtained by performing esterification (ester exchange) on C2-C36 fatty diacid and derivatives thereof, C6-C20 aromatic diacid and derivatives thereof, C2-C36 divalent alcohol, and 0.0 to 10% by weight of polyhydroxyl or polycarboxyl compound and performing condensation polymerization; the chain segment B is fatty copolyester with number average molecular weight of 3000 to 100000, which is obtained by performing esterification (ester exchange) on dimer acid and derivatives thereof, C2-C12 fatty diacid and derivatives thereof, C2-C36 divalent alcohol as well as 0.0 to 10% of polyhydroxyl or polycarboxyl compound and performing condensation polymerization. The chain segment A and the chain segment B react with a polyfunctional chain extender of polyisocyanate, a polyepoxy compound and carbodiimide which is 0.01 to 10% of the polymer to form the multi-block copolymer. The product prepared by the method has high biodegradability, mechanical property and processing property, and can be widely applied to the fields of packaging, biological medicine, medical treatment and thelike.

A high-strength anti-corrosion Al-Zn-Mg-(Cu)-series aluminum alloy rod material includes, by mass, 5.6-10% of Zn, 1.86-5% of Mg, 1.3-3.5% of Cu, 0-0.3% of Sc, 0-0.3% of Y, 0.1-0.5% of Ce, 0-0.2% of Si, 0-0.3% of Fe, 0-0.3% of Mn, 0-0.2% of Ti, 0-0.3% of Cr, not more than 0.15% of impurities, and the balanced being Al. The invention also provides a preparation method of the high-strength anti-corrosion Al-Zn-Mg-(Cu)-series aluminum alloy rod material. According to the high-strength anti-corrosion Al-Zn-Mg-(Cu)-series aluminum alloy and the preparation method thereof, by adding the Ce in trace amount and Y and/or Sc micro-alloying elements to the aluminum alloy, the aluminum alloy is effectively improved in mechanical strength. The invention solves the problem of low strength in the aluminum alloy rod materials.