52639 results about "Fiber" patented technology

A cable trough for installing cables alongside a railway line or other right of way is described. The cable trough is constructed using longitudinally oriented reinforcing fibers coated with polymeric resin that generally aligns the reinforcing fibers with the length of the cable trough. One or more connector clips may be used to secure respective portions of the cable trough to one another. The cable trough is provided with a cover that may be removably secured to an elongate channel to protect the cables housed within the cable trough. Elbows, corners, tees, and other connectors may be provided to run the cable trough in any desired direction. A method of installing cables in a cable trough is also described.

Disclosed herein is an angular optical component retention and removal system that reduces the amount of space needed to accommodate fiber optic cables and enables optical components to be quickly and easily inserted, retained, and removed from an optical communications system. The optical component retention and removal system may include a single or plural angular retention sections that retain optical components in an angular orientation through a faceplate. The system may further include an insertion / retention mechanism that enables an optical component to be inserted and removed with a single hand. With the system, fiber optic cables extend at an angle from the optical components, requiring less clearance space in front of the faceplate for provision of the fiber optic cables.

The invention relates to the technical field of compression molding of carbon fiber prepregs, in particular to a partitioned pressurization control method and system for compression molding of the carbon fiber prepregs and a molding process. S2, initial pressure calculation; s3, gradient pressurization control; s4, dynamic pressure adjustment; and S5, a global pressure maintaining stage: when the resin curing degree alpha reaches 0.6-0.8, switching to a full-screen pressure maintaining mode, and maintaining the pressure of each region to be 90%-95% of the current maximum pressure value until curing is completed. The invention provides a zoning pressurization control method and system for compression molding of carbon fiber prepreg and a molding process, and realizes the compression molding method and system with accurate zoning pressure regulation and control and directional discharge of volatile components. And by integrating intelligent sensing, multi-channel hydraulic control and a data driving optimization algorithm, the limitation of a traditional process is broken through, and a technical support is provided for efficient forming of the high-performance carbon fiber composite material.

The invention discloses a multi-sensing and data physical fusion frozen soil hot water force response test system and method, and the system integrates an ultra-weak fiber grating, an active heating fiber, a miniature dielectric constant sensor and an optical frequency domain reflection technology, and constructs a freezing process-oriented temperature, moisture, ice content and strain synchronous monitoring network; the method comprises the steps of constructing a multi-field fusion data set based on thermal disturbance lag correction, temperature-strain decoupling and a moisture-strain residual term compensation mechanism, and extracting key criterion characteristics of an ice lens growth rate, frost heaving force evolution and a shear deformation change rate; and in combination with a physical information neural network (PINN) embedded into a hot water force control equation, risk identification and grade judgment of the freezing abnormal behavior are realized. The method supports indoor heating and water pressure linkage adjustment, realizes a complete closed loop of multi-source sensing-risk identification-response verification under model driving, and breaks through the bottlenecks of low multi-physics field coupling identification precision, large parameter cross interference and insufficient risk identification real-time performance of the existing monitoring technology.

An airfoil having: a composition gradient defining a first coefficient of thermal expansion and a second coefficient of thermal expansion that differs from the first coefficient of thermal expansion; and a thermoelectric junction operationally coupled to the composition gradient, wherein the composition gradient is formed of either of a plurality of dissimilar metals or of plastic with fillings or fibers.

The invention provides a dissimilar material crystallization welding control method based on microwave energy distribution, which comprises the following steps: acquiring a high-density temperature map of a to-be-welded workpiece through a fiber grating array, and acquiring a real-time temperature value from a dissimilar material interface edge to a central area of the to-be-welded workpiece to obtain initial temperature distribution; calculating a temperature difference value between the edge and the central area, identifying a local overheat point position by comparing a temperature gradient or setting a temperature difference threshold value, and comparing the overheat point temperature with a preset material overheat threshold value to judge whether an overheat area exists or not; if the temperature difference value exceeds a temperature difference threshold value or a local overheating area exists, extracting space coordinates of a low-temperature area and a high-temperature area from the high-density temperature map, and identifying an energy distribution target area needing to be adjusted; and extracting temperature distribution from the updated energy distribution diagram, analyzing a temperature gradient to identify a heating power concentration region, and calculating to obtain a target stress distribution state in combination with the heating power concentration region.

The present invention discloses a water-based emulsion of PHA, PBAT and PVOH and its application in paper-based barrier coatings. This emulsion is prepared by first melt-blending PHA and PBAT at 150-170 °C and then dispersing them into an aqueous PVOH solution at 80-95 °C. Plasticizers, cross-linking agents and surfactants can be added to improve the performance. After coating on paper and drying at 80-150 °C, a barrier film with a Cobb value of 10-15 g / m² and a Kit ≥ 10 grade is formed. Compared with traditional PE film laminating or fluorine-containing coatings, this system is more environmentally friendly and recyclable; PVOH dissolves in pulping water, PHA and PBAT are easily separated, and fibers can be efficiently recovered; in composting, soil and marine environments, PHA and PBAT have extensive biodegradability and are superior to PLA which is difficult to recycle and requires industrial composting. It is applicable to food, industrial, special packaging and agricultural paper products.

The invention provides an LNG ship containment system monitoring system and method based on a fiber bragg grating sensor, and belongs to the crossing field of fiber sensing technology and ship safety engineering, the system comprises a fiber bragg grating sensor and a demodulation device, the fiber bragg grating sensor is used for collecting optical signals, and the demodulation device converts the optical signals into electric signals and processes the electric signals. The fiber bragg grating sensor adopts a double-grating structure and is respectively used for stress monitoring and temperature compensation so as to realize omnibearing real-time monitoring. The fiber grating sensor comprises a tail fiber, a protective tube, a base, and a strain grating, a spring and a temperature grating which are located in the protective tube. According to the invention, the monitoring precision and safety of the LNG ship containment system can be improved; through a double-grating temperature compensation technology, the influence of temperature change on stress measurement is eliminated, and the accuracy and reliability of data are ensured; in addition, stress information in different directions can be obtained in real time through the three-dimensional stress monitoring scheme, the stress condition of the structure is comprehensively reflected, and the flexibility and adaptability of monitoring are improved.

Sanitary tissue products of the present disclosure may comprise at least about 70% short fibers and / or having a weight weighted mean fiber length of less than about 1.4, and may have one or a combination of premium performance parameter(s). One or more of said sanitary tissue products may form part of an array of sanitary tissue products.

A method for creating polycrystalline silicon nitride fibers is discussed. The method includes dispersing silicon nitride powder to create dispersed silicon nitride powder. The dispersed silicon nitride powder is classified to create classified fine silicon nitride powder. Likewise, a sintering aid is dispersed to create a dispersed sintering aid and then classified to create a classified sintering aid. A plasticizer, a binder, and the classified sintering aid are added to the classified fine silicon nitride powder to define a compound. The compound is mixed to create a mixed slurry, which is then dried to create a material. The material is extruded through a nozzle that is less than 40 micrometers in diameter to create a preform, which is then sintered to create the polycrystalline silicon nitride fibers.

The invention discloses a composite board ultrasonic defect detection method which comprises the following steps: S1, fixing a carbon fiber circumferential winding composite pressure container on a bracket, and establishing a coordinate system with the axis of the container as a z axis; s2, a 40 MHz dry coupling phased array ultrasonic probe is attached to the scanning starting point, and the contact angle of the probe is recorded; s3, moving the probe along the spiral track of the outer surface of the container at the speed of 20mm / s, and collecting A-scanning echo signals of all array elements; s4, performing pulse compression and time domain deconvolution processing on the acquired signal to obtain a time domain echo sequence; s5, delay time is calculated according to the shell curvature, the array element signals are compensated, and focusing B-scanning data are generated; s6, splicing the B-scanning data at the step length of 0.5 mm * 0.5 mm, and reconstructing C-scanning data corresponding to the space coordinates; and S7, inputting the C-scanning data into the trained Transform network, and outputting defect types, sizes and three-dimensional coordinates. The method realizes high-frequency ultrasonic composite board defect accurate detection, remarkably improves the microcrack recognition rate, and is widely applied to safety evaluation scenes of high-pressure hydrogen storage tanks and pressure vessels.

A graphene-infused fabric is provided as a sound reducing acoustic layer for object such as a pickleball paddle. The graphene-infused fabric is made from polymer fibers, at least one of which is a graphene-infused polymer fiber. Graphene is blended into a polymer material, and fibers are manufactured from said material such as by extrusion. The graphene-infused polymer is combined with other fibers to be made into a woven or non-woven fabric.

A repulpable insulated container assembly having a container formed of paper such as corrugated cardboard or varying paper materials and defining an interior; and a repulpable insert placed within the interior of the container and formed of a first paper layer; and a paper fiber pad coupled to the first paper layer.

The invention relates to the field of concrete, and provides high-strength concrete and a preparation method thereof, and the high-strength concrete comprises modified basalt chopped fiber, a self-repairing agent, cement, fly ash, slag powder, coarse aggregate, natural sand, a water reducing agent and an air entraining agent. The modified basalt chopped fiber is oxidized by hydrogen peroxide, etched by hydrochloric acid and modified by a nano silicon dioxide coating, so that the interface bonding force is enhanced. The self-repairing agent is prepared by adopting expanded perlite to load bacillus through thallus culture, purification, dipping adsorption and low-temperature vacuum drying, CaCO3 deposition can be induced at concrete cracks, and self-repairing is achieved. The invention further provides a preparation method of the concrete. The preparation method comprises the steps of aggregate screening, hydrated liquid preparation, wet mixing, fiber and self-repairing agent adding, vibration forming and curing. The crack resistance of the concrete is improved by enhancing the fiber-matrix interface bonding force, meanwhile, the service life of the concrete is prolonged by utilizing a biological self-repairing technology, and the concrete is suitable for high-durability concrete engineering.

The invention discloses a fiber foamed concrete and a preparation method thereof. The fiber foamed concrete comprises the following raw materials in parts by weight: 5290 parts of cement, 4965 parts of water, 1.361 part of foaming solution, 1.2964 part of fly ash and 10 parts of fiber. The preparation method comprises the following steps: proportionally weighing the components; sequentially adding the cement and fly ash into a stirrer, proportionally weighing the water, uniformly stirring the mixture by the stirrer, and adding the fiber; preparing and adding the foaming solution; gradually adding the foam into the mixture, and continuously stirring until all the components are uniformly mixed; pouring the mixture into a mold on which lubricating oil is brushed, and curing in a curing chamber; after 24 hours, removing the mold; and respectively curing for 3 days, 7 days and 28 days for experimental detection. The fiber foamed concrete has the advantages of favorable thermal insulation property, favorable compression resistance and favorable bending resistance, and is applicable to a railway bed strengthening layer.

The invention discloses a high-temperature-resistant epoxy resin composite material and a preparation method thereof, and relates to the technical field of composite materials. The high-temperature-resistant epoxy resin composite material is prepared from the following raw materials in parts by weight: 70 to 80 parts of modified epoxy resin, 8 to 15 parts of high-temperature-resistant modifier, 15 to 30 parts of curing agent, 3 to 8 parts of nano reinforcing filler, 1 to 3 parts of coupling agent, 3 to 6 parts of carbon fiber, 2 to 5 parts of nano titanium dioxide, 5 to 10 parts of organic silicon rubber, 1 to 3 parts of conductive agent, 3 to 7 parts of flame retardant and 2 to 4 parts of zinc borate. The high-temperature-resistant epoxy resin composite material has outstanding advantages and strong thermal stability, and can bear high temperature; mechanical performance is excellent, and firmness and durability are achieved; the self-repairing capability is achieved, and the service cycle can be prolonged; the anti-permeability is good, and gas and liquid can be effectively blocked; the surface is smooth, the friction coefficient is low and the application prospect is wide.

The present invention discloses a handheld spray fan, the handheld spray fan includes a housing assembly, fan assembly, and spray device. The housing assembly features a handheld part, an air duct at one end, and an air outlet cover at the end of the air duct with a through-hole and multiple air outlet holes. The fan assembly is installed within the air duct, and the spray device comprises a water tank, water pipe, mounting seat, fiber water guide, and atomizer. The water tank is positioned within the housing assembly, the water pipe connects the water tank and the mounting seat, the mounting seat is located at the through-hole, and the atomizer is installed on the mounting seat and exposed through the through-hole. The fiber water guide extends from the water tank to the atomizer, ensuring continuous water supply for stable misting.

The invention relates to the technical field of concrete preparation, in particular to a mix proportion design method of fiber-compensating shrinkage self-healing concrete, which comprises the following steps: S1, determining a concrete formula and forming a final experiment matrix; s2, preparing first concrete samples according to the final experiment matrix, testing the multiple first concrete samples one by one, and collecting test parameters to form a database; establishing a concrete mix proportion prediction model according to the database; s3, inputting the actual environment temperature and humidity and the actual production parameters into the concrete mix proportion prediction model, and searching an optimal mix proportion by using an optimization algorithm; s4, verifying whether the optimal mix proportion meets a target or not; through systematized experimental design and data analysis, accurate customization of the concrete mix proportion is realized, the performance stability and adaptability of the fiber compensation shrinkage self-healing concrete are remarkably improved, and the research and development cost and time are effectively reduced.

The invention discloses injectable sodium hyaluronate-silk fibroin composite hydrogel and a preparation method and application thereof.The injectable sodium hyaluronate-silk fibroin composite hydrogel is composed of sodium hyaluronate composite gel particles and a sodium hyaluronate solution, and the sodium hyaluronate composite gel particles comprise silk fibroin sponge microspheres and sodium hyaluronate gel particles; the silk fibroin sponge microspheres are loaded on the sodium hyaluronate gel particles, the silk fibroin sponge microspheres are physical crosslinking microspheres, the particle size D50 is 10-30 [mu] m, and the particle size D90 is within 100 [mu] m; the sodium hyaluronate gel particles are chemical cross-linked particles, the particle size D50 is 150-300 microns, and the particle size D90 is within 800 microns. After the sodium hyaluronate gel particles are in contact with tissues, sodium hyaluronate is preferentially degraded, and silk fibroin exposed in the degradation process has better degradation resistance and an effect of stimulating generation of collagen fibers, so that in-situ fixation of the composite gel particles is realized, and an instant and lasting filling effect is achieved; the material is a safe and effective medical beauty filling material.

Sanitary tissue products of the present disclosure may comprise at least about 70% short fibers and / or having a weight weighted mean fiber length of less than about 1.4, and may have one or a combination of premium performance parameter(s). One or more of said sanitary tissue products may form part of an array of sanitary tissue products.

A training shoe comprises a bottom sole, a midsole disposed above at least a portion of the bottom sole, one or more panels attached to one or both of the midsole and the bottom sole to define an enclosure for a person's foot, and a carbon fiber plate disposed between the bottom sole and the midsole. The carbon fiber plate may be disposed in a recess defined in a bottom surface of the midsole. The carbon fiber plate may define a plurality of fingers that extend forward in a longitudinal direction of the training shoe.

The present invention is used in the technical field of functional textile materials. Disclosed are a composite fiber-based protective material, and a preparation method therefor and the use thereof. The composite fiber-based protective material comprises a unidirectional moisture-guiding fiber membrane, a bacteriostatic sweat-absorbing layer and a waterproof moisture-permeable membrane, which are sequentially stacked, wherein the unidirectional moisture-guiding fiber membrane comprises a hydrophobic fiber membrane and a hydrophilic fiber membrane sandwiched between the hydrophobic fiber membrane and the bacteriostatic sweat-absorbing layer, and the average pore size of the hydrophobic fiber membrane is larger than the average pore size of the hydrophilic fiber membrane. The average pore size of the hydrophobic fiber membrane is 10-18 μm; and the average pore size of the hydrophilic fiber membrane is 1.0-2.3 μm. The composite fiber-based protective material is prepared from the unidirectional moisture-guiding fiber membrane, the bacteriostatic sweat-absorbing layer and the waterproof moisture-permeable membrane by means of a lamination process. In addition to waterproofness and moisture penetrability, the composite fiber-based protective material also has biodegradability and a bacteriostatic effect.

The invention discloses a percolate intelligent remote monitoring and control system and method, and relates to the technical field of percolate monitoring. The percolate intelligent remote monitoring and control method comprises the following steps: S1, acquiring percolate working condition response data, and preprocessing the percolate working condition response data; s2, analyzing joint mutation characteristics of the three-dimensional core mutation parameters, identifying mutation event candidate points, aggregating to form mutation sections, and constructing a mutation section data set; s3, constructing an intervention judgment data set based on the abrupt change section data set, evaluating the intervention triggering strength of the abrupt change section, and judging whether to implement an intervention strategy or not based on an evaluation result; and S4, calling mutation event candidate points in which mutation sections are not formed, calculating trend characteristic parameters of various working conditions, evaluating working condition evolution risks and judging risk levels of abnormal candidate sections. The problem that the blocking risk cannot be recognized in time when the inlet water is mixed with the suspended fibers is solved.

A golf club head with a central body component is disclosed herein. The central body component includes a crown portion and a sole portion. The crown portion is composed of a continuous carbon fiber reinforced epoxy material. The sole portion is composed of a chopped carbon fiber reinforced vinyl ester sheet molding compound material. The central body component has a front opening and a rear opening with a hollow interior.

The invention discloses an equipment environment detection method and system based on a fiber grating sensor, and relates to the technical field of equipment environment detection methods, and the comprehensive environment of equipment is determined based on the internal production environment of the equipment, the production image of the equipment and the external environment of the equipment. The internal production environment of the equipment, the production image of the equipment and the external environment of the equipment are integrally controlled, accurate detection of the comprehensive environment of the equipment is achieved, and the accuracy of the comprehensive environment of the equipment is improved. Therefore, the production grade of the equipment is determined according to the comprehensive environment of the equipment and the detection of the real-time image of the material produced by the equipment; and if the production grade of the equipment is lower than the preset production grade threshold value, determining the abnormal part in the equipment based on the abnormal detection of the equipment, and triggering the autonomous regulation and control of the abnormal part, thereby realizing the autonomous regulation and control of the abnormal part, and fully considering the production grade of the equipment.

The invention relates to the technical field of material engineering, in particular to a preparation method and application of a light heat insulation cement aerogel material.The preparation method comprises the following steps that an adhesive is taken and dissolved in water, and then the solution is cooled to the room temperature; adding a dispersing agent into the solution, then adding cement, uniformly stirring, adding a hydrophobic component, and uniformly stirring; reinforcing fibers are added and evenly stirred, and the reinforcing fibers are at least one of polymer fibers, carbon fibers and glass fibers; adding the foaming component, and uniformly stirring; pouring the solution into a mold, performing freezing pore-forming by using liquid nitrogen, and recovering to room temperature after the freezing pore-forming is finished; and then drying to obtain the cement aerogel material after the drying is finished. The cement aerogel material prepared by the invention has excellent characteristics of high strength, light weight, non-flammability and the like, is used for a buffer layer of an explosion-proof tank, and can integrally improve the performance of the explosion-proof tank.

The invention provides a slow-release ecological grass blanket for improving an eroded inferior land and a construction method of the slow-release ecological grass blanket. The ecological grass blanket comprises a bottom intercepting layer, a nutrient slow-release layer, a seed triggering layer and a surface fixing layer which are sequentially arranged on the soil surface of the eroded inferior land. The bottom interception layer at least comprises a water-soluble lower film arranged on the soil surface and a first composite substrate layer arranged on the water-soluble lower film; the nutrient slow-release layer at least comprises an organic fertilizer mixture particle layer arranged on the first composite substrate layer and a water-soluble upper film arranged on the organic fertilizer mixture particle layer; the seed triggering layer comprises a degradable fiber lower net arranged on the water-soluble upper film and a composite seed belt arranged on the degradable fiber lower net; the surface fixing layer comprises a second composite substrate layer arranged on the composite seed belt and a degradable fiber net arranged on the second composite substrate layer. The ecological grass blanket provided by the invention is high in seed survival rate, good in uniformity, low in cost and capable of realizing sustainable ecological restoration.

The invention relates to the technical field of big data service, in particular to a chemical fiber raw material impurity spectrum intelligent analysis system which comprises a spectrum feature deconstruction module, an impurity feature modeling module, a periodic drift analysis module and a component quantification output module. According to the method, noise is suppressed through moving window scanning in combination with Savitzky-Golay filtering, peak shape features are reserved, the signal-to-noise ratio is increased, feature distortion caused by mean filtering is avoided, segments are divided through extreme value density, weak impurity recognition is enhanced in combination with a dynamic threshold value, and a multi-dimensional fusion model is established through peak width change rate and baseline offset convolution. Linear dimension reduction limitation is broken through to improve discrimination precision, dynamic time warping is used for aligning peak height difference and symmetry degree time sequence, drift and interference influences are eliminated, periodic error accumulation is solved, Kalman filtering is used for carrying out recursive optimization on compensated concentration, model lag is reduced, and a closed-loop optimization system is constructed through multi-stage feature decoupling and dynamic compensation. The sensitivity is improved; and the misjudgment rate is reduced.

The invention discloses sound-insulation and heat-insulation building mortar and a preparation method thereof, and relates to the technical field of building materials, the sound-insulation and heat-insulation building mortar comprises, by weight, 42-48 parts of a cementing material, 15-25 parts of an auxiliary material, 17-22 parts of lightweight aggregate, 30-35 parts of a functional filler, and 1-2 parts of an additive; the cementing material is a mixture of sulphoaluminate cement and Portland cement; the auxiliary material is a mixture of fly ash and quartz sand, the lightweight aggregate is a mixture of 20-40-mesh hollow vitrified microbeads and 70-90-mesh hollow vitrified microbeads, and the mass ratio of the hollow vitrified microbeads to the hollow vitrified microbeads is 1: (2-3); the functional filler is a mixture of modified waste rubber particles and modified fibers; the additive is a mixture of a polycarboxylate superplasticizer and hydroxypropyl methyl cellulose ether. The mortar disclosed by the invention is good in thermal insulation performance and excellent in mechanical property, the method disclosed by the invention is simple to operate and low in cost, and the prepared mortar is excellent in performance.

The invention discloses a preparation method of a curing agent with biological self-healing capability, which comprises the following steps: preparing a bacillus pasteurii bacterial solution, preparing the bacillus pasteurii bacterial solution into an endophytic spore solution, immersing polyvinyl alcohol fibers into a sodium alginate / endophytic spore solution, taking out the polyvinyl alcohol fibers, immediately immersing the polyvinyl alcohol fibers into a calcium acetate solution, drying the polyvinyl alcohol fibers to obtain core fibers with a hydrogel coating, and curing the core fibers with the hydrogel coating to obtain the curing agent with biological self-healing capability. The preparation method comprises the following steps: taking magnesium phosphate cement as a raw material, immediately immersing the magnesium phosphate cement into a chloroform solution of a polystyrene and polylactic acid polymer blend, drying to obtain a coated microbial liquid, premixing urea and glucose, doping the premixed urea and glucose into the magnesium phosphate cement, uniformly stirring, adding the coated microbial liquid, and uniformly stirring to obtain the product. According to the invention, phosphate cement is adopted as the curing agent, has the advantages of high strength, short setting time, strong durability, low alkalinity, good biocompatibility and the like, and compared with the curing agent in the prior art, the curing agent not only has a good curing effect, but also has a crack self-healing function, and is especially suitable for reinforcing foundation soil.