207 results about "Self reinforced" patented technology

The invention relates to a tissue anchor which is an open helix of biocompatible material having a slope of from 0.5 to 10 turns per centimeter, a length from 3 to 75 millimeters, a diameter of from 1.5 to 11 millimeters, and an aspect ratio of from about 3 to about 5 to 1. The anchor can have a head which is capable of securing or clamping tissue together, such as holding a suture to secure a ligament or tendon to bone. The anchor can also have a head which causes an inward, compressive loading for use in fastening bone to bone, orthopedic plates to bone, or cartilage to bone. The head may be an integral member and may include a self-reinforcing wedge which joins the helix to the head. Further, the elongate member, or filament that forms the helix may have a tapering diameter along its length.

Compositions for forming a self-reinforcing composite biomatrix, methods of manufacture and use therefore are herein disclosed. Kits including delivery devices suitable for delivering the compositions are also disclosed. In some embodiments, the composition can include at least three components. In one embodiment, a first component can include a first functionalized polymer, a second component can include a second functionalized polymer and a third component can include silk protein or constituents thereof. In some embodiments, the composition can include at least one cell type and/or at least one growth factor. In some embodiments, the composition can include a biologic encapsulated, suspended, disposed within or loaded into a biodegradable carrier. In some embodiments, the composition(s) of the present invention can be delivered by a dual lumen injection device to a treatment area in situ, in vivo, as well as ex vivo applications.

Absorbable implants for breast surgery that conform to the breast parenchyma and surrounding chest wall have been developed. These implants support newly lifted breast parenchyma, and/or a breast implant. The implants have mechanical properties sufficient to support a reconstructed breast, and allow the in-growth of tissue into the implant as it degrades. The implants have a strength retention profile allowing the support of the breast to be transitioned from the implant to regenerated host tissue, without significant loss of support. Three-dimensional implants for use in minimally invasive mastopexy/breast reconstruction procedures are also described, that confer shape to a patient's breast. These implants are self-reinforced, can be temporarily deformed, implanted in a suitably dissected tissue plane, and resume their preformed three-dimensional shape. The implants are preferably made from poly-4-hydroxybutyrate (P4HB) and copolymers thereof. The implants have suture pullout strengths that can resist the mechanical loads exerted on the reconstructed breast.

The invention relates to a preparation method of a low-cost self-reinforced submicron grain alumina ceramic, which belongs to the fine ceramic field. The method comprises the steps of: adopting industrial aluminum hydroxide or boehmite as a raw material, adding fine grain Alpha-alumina and water for ball milling so as to obtain an even slurry; adding water for mixing at a temperature between 70 and 90 DEG C, and adding acid to control the pH value at 2 to 5, so as to form an emulsion; and adding an additive which is a mixture selected from one or more than two of zinc oxide, magnesium oxide, calcium oxide, yttrium oxide, lanthanum oxide, zirconium oxide, boric oxide, ferric oxide, vanadium oxide, silicon oxide or titanium oxide for forming a gel after water is evaporated, and drying the gel and then sintering the gel under high temperature for preparing the self-reinforced submicron grain alumina ceramic containing alumina elongated grains. The ceramic is characterized in that crystal grains have diameters of less than 0.5mu m, and a microstructure contains elongated alumina grains have length-diameter ratios of larger than 5, and has the advantages of high hardness, high toughness and good wear resistance, and can be widely used in ceramic grinding media and the abrasives industry.

A modular optical transmission cable which has several reinforcement and optical modules, each optical module having: a sheathed optical fiber, coated with: an intermediate decoupling layer, and with a rigid shell forming a microcarrier, a reinforcement module being associated with an optical module, the modules being molded in an external sheath. A flexible reinforcement module is associated with at least one optical module that is self-reinforced against compression in order to obtain a cable having high flexibility combined with high compressive strength. The disclosure can be applied in the field of optical fiber cables and especially that of the reinforcement structures of such cables and fibers.

Bone fixation or augmentation in a mammalian body to enhance the mechanical strength of a fracture is provided by reinforcement fixing bone ends together using the implant device. A resorbable device can be rendered anti-osteolytic by incorporating materials such as bisphosphonates. It can also be rendered osteoconductive by the incorporation of an osteoconductive material such as bioactive glass or TCP. The implant device has a matrix as one phase, where the matrix is made of a bioresorbable polymer. One phase of the implant is made from self-reinforcing elements and the matrix contains an antiosteolytic agent component. The implant contains further osteoconductive and/or osteoconductive material.

The invention discloses a self-enhanced type ceramic fiber castable and a method for preparing the same. The ceramic fiber castable is mixed by a matrix slurry and a grading ceramic fiber particle which is mixed by a ceramic fiber particle with a grain size of 3-8mm and a ceramic fiber particle with a grain size of 1-2mm, wherein each component content(weight) range is as follows: grading ceramic fiber particle 70%-10% and the matrix slurry 30%-90%. The matrix slurry is mixed by a based burden and a polyvinyl alcohol solution accounting for 30%-45% of the based burden weight, wherein each component content range (by total weight 100%) of the based burden is as follows: short ceramic fiber with a length less than or equal to 7mm 10-40%, ceramic powder with a grain size less than or equal to 0.088mm 70%-40%, foaming agent 5%-10%, plasticizer 0.5%-5% and high temperature binding agent 14.5%-5%. The castable of the invention has advantages of good high temperature resistance and heat insulation performance, high intension and nonchalking of the ceramic fiber in the furnace lining after long time usage at high temperature.

A turbine component has a substrate formed from a ceramic material selected from the group consisting of a monolithic ceramic material and a composite ceramic material and a thermal barrier coating bonded to the substrate. In one embodiment, the ceramic material forming the substrate is selected from the group of silicon nitride and self-reinforced silicon nitride. In another embodiment, the ceramic material forming the substrate is selected from the group consisting of a silicon carbide-silicon carbide material and a carbon-carbon material. At least one bond coat layer may be interposed between the substrate and the thermal barrier coating.

A metal-polymer composite includes a crosslinked polymer; and a metal which is removably disposed among the crosslinked polymer. A method of making the metal-polymer composite includes combining a crosslinked polymer and a metal; blending the crosslinked polymer and the metal to form a blend; cold pressing the blend; heating the blend to a forging temperature; and applying pressure to the blend at the forging temperature to form the metal-polymer composite. A downhole article includes a crosslinked polymer including a crosslinked product of a polymer including polyphenylene sulfide, polyphenylsulfone, self-reinforced polyphenylene, polysulfone, polyethersulfone, polyarylsulfone, derivatives thereof, or a combination comprising at least one of the foregoing; and a metal disposed among the crosslinked polymer and removable by contact with a downhole fluid.

A method for preparing the carbon nano-tube/cement self-reinforcing amortization composite material and testing the damping ratio, relates to a method for preparing the cement self-reinforcing amortization composite material and testing the damping ratio. The invention settles the problems of nonuniform dispersion of carbon nano-tube, bad binding capability to the substrate interface, low damping ratio and expensive device for testing the damping ratio, complicated test or big data error in the carbon nano-tube/cement self-reinforcing amortization composite material prepared currently. The preparing method comprises the following steps: adding the cement mixing material, deionized water, superplasticiser, and the latex mixture of cement and polymer in sequence into the carbon nano-tube disperse phase miscible liquid for mixing to uniform and eliminating the bubble, afterwards encasing into the specimen mold for molding by casting; removing the mold and standard maintaining to the prescribed lifetime, then the carbon nano-tube/cement self-reinforcing amortization composite material is obtained. The testing method comprises the following procedures: constructing an elastic system, connecting the acceleration gauge and the strength hammer to the data acquisition system, vertically flipping the test piece with the strength hammer and testing the damping ratio.

The invention relates to a self-reinforced hybrid hydrogel used for artificial muscles and a preparation method thereof. According to the invention, sodium alginate is used as a high-molecular skeleton, acrylamide and derivative thereof are used as polymerizable monomers, divinyl benzene, N,N'-methylene bis acrylamide or ethylene glycol dimethacrylate is used as a chemical cross-linking agent, an aqueous metal salt solution is used as an ion cross-linking agent, and then the hydrogel with high elasticity and high toughness is prepared. During a process of preparing the hydrogel, an organic matter emulsion containing metal ion aqueous solution is added. When the prepared hydrogel is stretched by external forces to a certain extent, the gel deforms to extrude the organic matter emulsion, and metal ions are released and then crosslinked with the sodium alginate in the hybrid gel, thereby substantially improving gel intensity and preventing gel fracture. The preparation method has advantages of good controllability, simple technology and low cost, the obtained hydrogel material can be self-reinforced, and is expected to be applied in fields of artificial cartilage, artificial muscle, flexible robot manufacture, etc.

The invention discloses a system and a method for recognizing voice emotion of animal, and relates to the voice recognizing technology. The system comprises an audio processing device (10), a data processing device (20), a wireless transmission device (30) and a power supply (40) the audio processing device (10), the data processing device (20) and the wireless transmission device (30) are sequentially connected; the power supply (40) is respectively connected with the audio processing device (10) and the data processing device (20). The method comprises the steps of (1) building a voice data template database and a model; (2) recognizing the emotion; (3) self-reinforcing the model. The system and the method are applicable to a zoo, an agricultural and forestry division and a wildlife protection division to timely master the living habit of the animal as well as preparing protection strategies. The system and the method are also applicable to mutual communication of people and pets in daily life.

The invention, belonging to the technical field of biomedical materials and tissue engineering, discloses a self-reinforced bi-crosslinking hyaluronic acid hydrogel and a preparation method thereof. The preparation method disclosed herein comprises the following steps: preparing double-bond activated hyaluronic acid, preparing hyaluronic acid microballoons, preparing double-bond activated hyaluronic acid microballoons, and preparing the self-reinforced bi-crosslinking hyaluronic acid hydrogel. The self-reinforced bi-crosslinking hyaluronic acid hydrogel prepared by the method is obtained by using double-bond activated hyaluronic acid microballoons as reinforced particles to react with the double-bond activated hyaluronic acid molecules, and has a bi-crosslinking network structure, wherein the diameter of the double-bond activated hyaluronic acid microballoons is 1-10 mum, the pore size of the bi-crosslinking hyaluronic acid hydrogel is 10-70 mum, and the double-bond substitution degree is 2.8-65%. Compared with a single crosslinking hyaluronic acid hydrogel, the hydrogel disclosed herein has better elastic energy, and well prolongs the sustainable control release time of bovine serum albumin.

The invention relates to a self-reinforced polypropylene composite material and a preparation method thereof. The preparation method comprises the following steps: preparing a sheet composed of high-melting-point polypropylene and low-melting-point polypropylene by screw coextrusion, separating the sheet into strips which are 5-20mm wide, carrying out hot stretching, and coiling into cylinders; weaving the cylindrical strips into a fabric; and finally, carrying out hot pressing on a plurality of layers of fabrics to obtain the composite material. Compared with the prior art, the invention widens the hot pressing temperature window of the self-reinforced polypropylene composite material sheet, and the prepared product has favorable properties.

The invention discloses a high-strength aramid paper and a method for preparing the same through dissolving and re-pressing self-reinforcing. The method comprises the following steps: subjecting polyphenylene sulfide fiber to pretreatment, then mixing the pretreated polyphenylene sulfide fiber, aramid fiber and aramid pulp, subjecting dried raw paper to dipping and then pressing treated sample paper; soaking the treated sample paper in a washing solution and removing an organic solvent and inorganic salt left in the paper; and pressing the treated sample paper. When the high-strength aramid paper has gram weight of 10 to 200 g/m<2>, the aramid paper has a thickness of 20 to 400 [mu]m, tensile strength of 10 to 150 KN/m and dielectric strength of 30 to 70 kV/mm. According to the invention, aramid paper and polyphenylene sulfide are used as raw materials; the method is environment friendly and low in cost; the prepared paper has high strength and good evenness; and industrial production can be realized through partial reconstruction of conventional paper machines.

The invention relates to a preparation method of self-reinforced mullite porous ceramic. The preparation method comprises the following technical steps: carrying out dosing on 30-50% by mass of a mineral or solid waste containing Al2O3 and SiO2, 25-55% by mass of industrial alumina powder and 0.5-30% by mass of starch, adding 1-30% by mass of ammonium salt additives in total mass of the mixture, regulating the molar ratio of Al2O3 to SiO2 in the raw materials to be 3:2, and carrying out mixing, carrying out ball milling and forming; sintering a formed biscuit for 1-6 hours at the temperature of 1400-1600 DEG C, so as to obtain the self-reinforced mullite porous ceramic. The self-reinforced mullite porous ceramic prepared by utilizing the preparation method is in-situ fiber-reinforced mullite porous ceramic having the characteristics that mullite is taken as a primary crystalline phase, the strength is high (40-80MPa), the porosity is high (30-60%), and the aperture is small.

The invention discloses a preparation method of aramid nanofiber self-reinforced aramid mica paper. By means of the method, the retention rate of mica in the wet papermaking process of the aramid micapaper is increased, and the dielectric strength and mechanical strength of the aramid mica paper are further improved; the problems are solved that in the wet papermaking process of existing aramid mica paper, the retention rate of mica is low, and as large-particle-size mica is randomly stacked and arbitrarily accumulated, gaps and pores are generated and the improvement of mechanical strength and dielectric strength is limited; meanwhile, through simple operation of the method, the dielectric strength and mechanical strength of the aramid mica paper are significantly improved, and the insulating property is remarkably improved.

The invention discloses a non-heat treatment self-reinforcing aluminium-silicon alloy preparation technology, which comprises the following steps: adding pure magnesium ingot, intermediate alloys AL-Si, AL-Mn, AL-Cu, and AL-Ti in a fusing aluminium liquid at temperature of 740-760 DEG C, after fusing, insulating for 30 minutes at 740 DEG C; heating the temperature of an alloy liquid to 780 DEG C, adding mixing rare earth, removing the scummings on the surface after fusing the mixing rare earth, stirring for 3-6 minutes and increasing the temperature of the alloy liquid to 770-780 DEG C, insulating and standing for 30 minutes; finally cooling the alloy liquid to 750 DEG C for refining, refining for 15 minutes, removing the slag, degassing, and finally completing the casting production. According to the invention, the mixing rare earth and an element Mn are used for refining Si and Cu in an aluminium alloy material according to strict mol fraction ratio, reinforcement effect can be provided, and the aluminium-silicon alloy having advantages of high heat resistance, high elongation percentage and excellent deformation capability can be obtained.

The invention provides a self-reinforcing pressure container based on safety design technical conditions, and is used for improving the safety and the bearing capability of the container and solving the technical problems of the prior art that the calculation is complicated, inaccurate or not safe enough. The essentials of the technical scheme are as follows: the depth of a plastic region of the container is calculated according to the specification so that residual stress does not exceed sigma y and reverse yielding is not generated; and a bearing capability is calculated according to the specification so that the absolute value of sigma ej is less than or equal to the sigma y and the absolute value of sigma ei is less than or equal to the sigma y, wherein k is the diameter ratio, kj is the ratio of an elastic-plastic interface radius to an inner diameter, the sigma y is the yield strength, p is the inner pressure borne by the container, pe is the maximum elastic bearing capability of a non-self-reinforcing container, the sigma ej is the equivalent stress of the total stress of an elastic-plastic interface and the sigma ei is e equivalent stress of the total stress of an inner wall; when the k is less than the determined value, namely when the k is less than 2.024678965...., the container does not generate the reverse yielding after the self-reinforcing pressure is removed no matter how large the kj is.

The invention discloses a resin fiber composite material making method of self-reinforced interlayer shearing strength, which is characterized by the following: weighing 5-100 liquid crystal resin; preparing prepreg according to wet method or melting method; or adapting liquid phase modeling craft to form composite material without preparing prepreg according to the conventional composite material moulding method; paving prepreg layer; forcing static magnetic field or variable pulse magnetic field with 2-20 T magnetic strength in the moulding course; orienting the solid liquid crystal at the given direction; cooling the moulded mold to atmospheric temperature naturally then demoulding; or doing after-treatment again to demould after cooled to atmospheric temperature naturally. The invention improves the shearing strength and, which reduces cost.

A pharmaceutical composition comprising an .alpha.3.beta.4 nicotinic receptor antagonist effective to diminish the brain-derived feeling of pleasure due to increased dopamine in the pleasure-reward center of the brain typically associated with administration of an opioid agonist analgesic, a muscle relaxant, an anti-seizure medication, an anxiolytic drug, an amphetamine, a central nervous system stimulant, a tetrahydrocannabinol or that associated with an otherwise pleasurable or self-reinforcing behavior.

The invention discloses a preparation method of a fully degradable high-strength and high-barrier polylactic acid film. The method is to firstly melt and blend polylactic acid and PBS under strong shear, so that the PBS droplets are violently broken into nanoparticles in the matrix. The strong tensile/shear field transforms PBS nanoparticles into nanofibers, and finally uses the "confined sheet" method to transform PBS nanofibers into regular and dense PBS nanosheets in a molding machine or a twin-roller continuous extrusion molding device, A polylactic acid high-strength and high-barrier film containing PBS nanosheets was obtained. The polylactic acid film products containing PBS nanosheets prepared by the present invention retain the good biodegradability of PBS and polylactic acid on the one hand, and on the other hand, a large number of oriented and straightened PBS nanosheets can block the infiltration of gas/water molecules and act as self-reinforcement The structural unit obtains simultaneous improvement of mechanical properties and barrier properties.

The invention provides an irradiation crosslinked polyethylene blending self-reinforcing material for artificial joints and a preparation method thereof. The polyethylene blending material for artificial joints is prepared by blending low molecular weight polyethylene (LMWPE) and irradiation crosslinked ultrahigh molecular weight polyethylene (UHMWPE). The preparation method comprises the following steps: (1) preparing irradiation crosslinked UHMWPE, (2) preparing LMWPE master batch, (3) preparing irradiation crosslinked UHMWPE/LMWPE blending material, and (4) vibration injection molding. The irradiation crosslinked polyethylene blending self-reinforcing material for artificial joints has the advantages that the relative content of UHMWPE in polyethylene blend is improved to the maximum extent during the process of vibration injection molding and the excellent performance is reserved, a shish-kebab self-reinforcing structure is formed in the inner part due to vibration injection molding, and tensile property, impact strength and wear-resisting property are improved remarkably. Therefore, the irradiation crosslinked polyethylene blending self-reinforcing material is suitable for joint prosthesis implant material.

A method of forming a structure for a downhole application comprises forming an interfacial material comprising at least one of self-reinforced polyphenylene, polyphenylene sulfide, polysulfone, and polyphenylsulfone between opposing surfaces of a first substrate and a second substrate. A downhole structure and a downhole assembly are also described.