Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

54 results about "Filling defect" patented technology

Filling defect. An imaging term of art referring to a reduction in filling of a focal, typically rounded hollow viscus (e.g., urinary bladder, gallbladder, colon) by radiocontrast due the presence of a mass that projects into the lumen.

Long-term high-temperature oxidation-resistant multi-element composite ceramic coating for carbon/carbon composite material and preparation and application methods thereof

The invention provides a long-term high-temperature oxidation-resistant multi-element composite ceramic coating for a carbon/carbon composite material and preparation and application methods thereof. The long-term high-temperature oxidation-resistant multi-element composite ceramic coating is a composite coating on the surface of the carbon/carbon composite material and sequentially (from inside to outside) comprises a SiC connection layer prepared with an embedding method, a SiC sealing layer prepared with a chemical vapor deposition method and a SiO2-Y2Si2O7-ZrSiO4-Al2SiO5 ceramic layer prepared with a brush coating method and an in-situ oxidation reaction method, wherein the SiC connection layer is combined with a matrix and exerts the function of connecting the matrix, the SiC sealinglayer exerts the function of filling defects of an inner layer, and the outermost SiO2-Y2Si2O7-ZrSiO4-Al2SiO5 ceramic layer serves as an oxygen blocking layer and exerts the function of self-healing and oxygen blocking. The long-term high-temperature oxidation-resistant multi-element composite ceramic coating has the advantages of firmness in combination with the matrix, no run-through crack, long-term high-temperature oxidation resistance, and capability of being completely applied to the preparation of non-direct-ablation heat-resistant structural members around the head and of the wings ofa hypersonic aircraft and the preparation of a material for the tailpipe chamber of an aircraft engine.
Owner:CENT SOUTH UNIV

Preparation method for in-situ synthesizing of conical SiC crystal whisker through coprecipitation and thermal evaporation technology

The invention relates to a preparation method for in-situ synthesizing of conical SiC crystal whisker through a coprecipitation and thermal evaporation technology. The preparation method comprises the steps of depositing a layer of carbon on a carbon fiber prefabricated body through a CVI method, filling defects on the surface of the prefabricated body and providing sufficient reaction raw materials; then putting the prefabricated body into a urea solution containing a catalyst to be dipped, calcining and reducing to obtain a nano catalyst; then suspending a sample containing the nano catalyst at the position of the top end in a graphite mold where silicon powder and carbon powder are loaded and evenly mixed and then obtaining the conical SiC crystal whisker through thermal treatment in certain temperature. The preparation method disclosed by the invention is simple, free of pollution, safe and stable, can effectively improve oxidation resistance, breaking tenacity and creep resistance of a composite material and combination strength between a base body and an enhanced body, can be applied to carbon/carbon, carbon/ceramic, magnesium-based and aluminum-based composite materials and has very good economical and social benefits.
Owner:无锡博智复合材料有限公司

Coated fiber-reinforced resin molded article and manufacturing method of the same

An object is to provide a manufacturing method of a fiber-reinforced resin that significantly reduces a resin filling defect on the surface and surface irregularity caused by a temperature difference between a molding temperature (curing temperature) and ordinary temperature in the course of molding the fiber-reinforced resin, and a product manufactured by the manufacturing method. There is accordingly provided a manufacturing method of a coated fiber-reinforced resin molded article and a product manufactured by the manufacturing method. The manufacturing method comprises a first molding process that cures a matrix resin which a reinforcing fiber is impregnated with at a temperature T1(° C.) to obtain a fiber-reinforced resin molded article; and a second molding process that places the fiber-reinforced resin molded article in a cavity of a mold, sets the cavity to a temperature T2(° C.) that is lower than the temperature T1(° C.), injects a liquid coating layer-forming resin material into the cavity such as to coat at least part of a surface layer of the fiber-reinforced resin molded article, and cures the coating layer-forming resin material at the temperature T2(° C.), so as to obtain the coated fiber-reinforced resin molded article, wherein the mold is comprised of at least two pieces and has the cavity in a shape that is approximately same as a shape of the fiber-reinforced resin molded article.
Owner:TORAY IND INC

Method of, and apparatus for, forming portions of fibrous material and removing the same

A method and apparatus of forming portions of tobacco, and of removing the same by an conveyor having at least one path of holders for a respective portion, in which the holders are filled with individual portions of the contents at least two filling lines of one or more filling stations, and, prior to the individual filling operations, individual portions of the contents are weighed and weighed portions that satisfy the predetermined conditions—acceptable portions—are filled cyclically into the holders and weighed portions that do not satisfy the predetermined conditions are detected and ejected as defective portions, characterized by components and steps of (a) following detection of a defective portion, that holder which the filling line originally predetermined for filling this holder would have filled with the contents portion, on which the defective portion is based, had the contents portion satisfied the predetermined conditions—defective-portion holder—is sensed, and a filling line other than that originally predetermined for filling the defective-portion holder—compensating filling line—fills the defective-portion holder, preferably outside the original filling cycle thereof, with an acceptable portion that satisfies the predetermined conditions.
Owner:FOCKE & CO (GMBH & CO KG)

Capacitor manufacturing method

The invention discloses a capacitor manufacturing method, which comprises the following steps: providing an inter-layer medium layer and an interconnection structure penetrating through the inter-layer medium layer; depositing an etching barrier layer, a first insulating layer, buffer layers and a second insulating layer on the inter-layer medium layer in turn; etching the second insulating layer, the buffer layer and the first insulating layer in turn to form grooves; etching the buffer layers through the grooves so as to increase the local widths of the grooves in the buffer layers; etching the grooves with a first etching agent, so that the bottom widths of the grooves approach to the top widths of the grooves; continuing to etch the grooves with a second etching agent, smoothening the closed angles at the interfaces between the second insulating layer and the buffer layers and between the buffer layers and the first insulating layer, and increasing the groove widths; removing the etching carrier layer; depositing polycrystalline silicon on the inner walls of the grooves and forming semi-spherical polycrystalline silicon particles serving as the lower electrode of the capacitor; and depositing a dielectric layer and an upper electrode on the lower electrode in turn. By using the method, the short circuit and the filling defect between the upper electrode and the lower electrode of the capacitor can be avoided.
Owner:SEMICON MFG INT (SHANGHAI) CORP

Fast resin wetting forming technology based on material flow prepeak monitoring

The invention discloses a fast resin wetting forming technology based on material flow prepeak monitoring on the basis of a traditional resin wetting forming technology. A system comprises a monitoring module, a vacuum pump, a vacuum tank, a sensor, electromagnetic valves A, electromagnetic valves B, a throttling valve, a die, a storage tank, filler, die releasing cloth, a flow guide net, a flow guide pipe, a pipeline connecting piece, sealing cloth, a feeding pipeline, a middle pipeline and a gas extraction pipeline. The technology process mainly includes the steps that the die is divided into multiple filling areas; the material flow prepeak position is monitored through the sensor in the monitoring module; sequential starting and stopping of all the pipelines are controlled in cooperation of a controller, and step-by-step filling is achieved for the different filling areas; and after all the areas are filled with sizing materials, curing forming is conducted, then die releasing is conducted, and a product can be obtained. Compared with a traditional technology, the fast resin wetting forming technology has the beneficial effects that sizing material prepeak lossless monitoring is achieved, and the automation degree is high; and the probability of filling defects such as incomplete wetting can be better lowered, and meanwhile the labor cost is reduced. The fast resin wetting forming technology is particularly suitable for processing and producing of various large thermosetting resin matrix composite materials of complex structures.
Owner:BEIJING UNIV OF CHEM TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products