51results about How to "Tensile strength" patented technology

A multiple braid exterior tube having a composite structure which includes an inner tubular layer, reinforcing layers and a polymer matrix layer. The exterior tube is formed with polymeric materials and metallic reinforcing braiding configured to provide greater tensile strength and stiffness. The exterior tube is used for a variety of medical devices such as a sheath component for intravascular devices and catheters.

A sustained-release biodegradable polymeric drug-eluting fiber is disclosed. In some embodiments, the therapeutic drug is complexed with cyclodextrin. In certain embodiments, the polymeric component of the fiber comprises cyclodextrin. The fiber may be fabricated to provide a thread and/or suture. The fiber may be used for treatment of ocular diseases or disorders.

A polyacrylonitrile-based polymer, containing a polymer of which main component is acrylonitrile, which satisfies at least one kind requirement selected from the following [a] to [d].

[a] Z-average molecular weight (Mz) determined by gel-permeation chromatograph is 800,000 to 6,000,000 and degree of polydispersity (Mz/Mw) (Mw denotes weight average molecular weight) is 3.0 to 10.0.

[b] Z+1-average molecular weight (Mz+1) determined by GPC method is 3,000,000 to 10,000,000 and degree of polydispersity (Mz+1/Mw) is 6.0 to 25.0.

[c] Mzm determined by gel-permeation chromatograph multi-angle laserlight scattering photometry is 400,000 to 1,000,000 and degree of polydispersity (Mzm/Mwm) is 3.0 to 10.0.

[d] Z-average radius of gyration (Rz) determined by gel-permeation chromatograph multi-angle laserlight scattering photometry is 25 to 45 nm and its ratio to weight average radius of gyration (Rz/Rw) is 1.3 to 2.5.

A thermal insulating and substantially moisture impermeable rigid extrusion comprising 40 to 75 wt % rice husks, a coupling agent, a lubricant, a plasticizer, and the balance a thermoplastic plastic, preferably a thermoplastic polyolefin plastic selected from the group consisting of high density polyethylene, low density polyethylene; linear low density polyethylene, homopolymer polypropylene, copolymer polypropylene, and combinations thereof. The rigid extrusion may be an elongated strip in the shape of a panel, a sheet, a board, a stud, a door frame jamb, a door frame header, an I-beam, a hollow post or beam with partially or fully encapsulated glass fibre reinforcing, a baseboard, a quarter-round, a cove molding, a fascia or a soffit. A preferred rigid extrusion has longitudinal tongue and groove side edges and longitudinal ribs and recesses formed across a face thereof substantially from one side edge to the other. The extrusion may be cut transversely to form a rectangular floor panel having a transverse tongue formed in one end and a mating groove formed in the other end for assembly of abutting panels together side-by-side and end-to-end to produce a continuous floor surface adapted for assembly with the ribbed surface facing downwardly.

The invention relates to the dividing up and testing of bulk samples from cores of rock. The method involves the extraction of several plugs for triaxial testing which are derived from exactly the same level in the core, and also Brazilian test samples and samples for compositional and textural analysis from the same level. Triaxial tests with different confining pressures may be performed to destruction on separate triaxial plugs, allowing a reliable full Mohr-Coulomb analysis to be performed. Mechanical properties may be related more reliably to composition and texture of rock. The technique is especially useful for non-conventional rock such as shale.

A coating system for a surface (such as a floor) including an adhesive layer composition including a dispersible adhesive that forms an adhesive layer upon application to a surface, and a maintenance layer composition comprising a dispersible polymer that forms a maintenance layer upon application to the adhesive layer. The dispersible adhesive may include at least one of a styrene-butadiene latex, an acrylic latex material, a polyurethane latex, a polyvinyl acetate emulsion, and a combination thereof. The maintenance layer may include at least one of a UV-cured polymer, a nylon, an epoxy, a polyacrylate, a polystyrene acrylate, a polyurethane, a polyurea, and a combination thereof. The adhesive layer and the maintenance layer may form a finished coating having a peel strength greater than about 50 gf/25 mm.

The present invention relates to a method of preparing a collagen matrix with increased porosity and tensile strength by using mechanical stimulation system. More specifically, in the present invention, the cell-populated gel is being cultured under the condition that the physical forces is loaded for causing the matrix to move periodically and discontinuously. Resulting collagen matrix can be used for preparing an artificial skin or organs. Furthermore, this collagen matrix can be used as fillers for esthetic or therapeutic purposes.

An improved suture anchor has one or more channels formed into the exterior surface of the anchor body. The channels may be used to inject a compound, such as filler material or an adhesive, into the implant site. Preferably, the channels connect to a retainer in the anchor body for a suture to pass through, preventing the suture from being compressed and allowing removal and adjustment of a suture retained by the anchor after the anchor is installed in a bone. The retainer is preferably a slot formed into the distal end of the anchor body. In a method of securing tissue to bone, an insertion tool is used to insert the suture into the anchor and install the anchor into an implant site in the bone. If the suture later fails, the channels may be used to fill the implant site with bone cement for redrilling. Preferably, the suture anchor is made of human cortical bone or a similarly bioabsorbable and osteoconductive material.

An electroluminescent wire core having a flexible central electrode, a luminescent layer and a transparent, conductive layer. An outer surface of the central electrode is coated with the luminescent layer and the transparent, conductive layer respectively. In the transparent, conductive layer is disposed luminescent power which is covered by thermoplastic macromolecular polymer and synthetic resin.

Method for making plastic fiber for application in concrete with largest grain diameters >4 mm, with an average diameter of 0.15 to 2 mm, corresponding to approximately 160 to 28,000 dtex. Using a co-extrusion process, a bi-component fiber is formed having a central core and a casing around the central core, the central core and the casing contain different pure polymers or polymer mixtures, and then the co-extruded bi-component fiber is stretched by a factor of 5 to 15, and thereafter a structured or grooved surface is embossed onto the co-extruded stretched bi-component fiber. The embossing is performed such that a depth of the embossing is more than 10% of an average fiber diameter, and a maximal distances of structure tips within incorporated structures of the embossing in an axial direction lie in a region between 0.5 mm and 3 mm.

A fluororesin tube 30 of the present invention has a tensile strength of 80 N/mm² or more in both of the circumferential direction and the axial direction. The fluororesin tube 30 is produced by winding with two or more turn of a fluororesin film 20 having a thickness T of 2.5 μm or less (particularly 2.0 μm or less) to form a lamination. At least an outermost layer of the tube is fused to a layer immediately thereunder and a rising height H of the fluororesin film at the end-of-winding side 21 is always 0.1 μm or more and 2.0 μm or less when measured at any position of the side 21. A level difference D of the end-of-winding side 21 of the fluororesin tube is preferably more than or equal to sum of the film thickness T and 0.1 μm, and less than or equal to 3.0 μm (particularly 2.3 μm) when measured at any position of the side 21.

Improved batts for sleeping bags, insulated apparel, bedding, and other uses are made from a tow of crimped continuous filaments by a machine and process which spreads, extends, and cross-laps the tow into an endless flat-tube structure with desired uniformity, balanced tensile strength, dimensional stability, stretchability, and high loft.

Provided is a connector configured so that tensile strength when an attempt is made to forcibly detach the connector from a partner connector can be enhanced. A housing includes a body portion and a fitting target portion extending to the side of fitting to the partner connector. The diameter of a side portion outer peripheral surface of the fitting target portion is, at at least part thereof, smaller than that of the body portion. A conductive shell includes a first shell and a second shell. The first shell includes a cover portion configured to cover at least part of an outer peripheral surface of the housing, an elastic arm having a free end on the side of fitting to the partner connector, and a support portion elastically connecting the cover portion and the elastic arm and configured to support the elastic arm in a cantilever manner. The elastic arm has a lock portion configured to lock fitting to the partner connector, and has a stepped portion corresponding to a stepped surface of the housing provided using a difference in the diameter. The second shell includes a portion facing the stepped portion at a position closer to the side of fitting to the partner connector than the stepped portion of the elastic arm.

An alkaline phenolic resole resin compositions comprising (a) an aqueous basic solution of a phenolic resole resin, (b) and a polyhydric alcohol, and their use in foundry applications.

The present technology provides a rubber composition containing a diene rubber including a styrene-butadiene copolymer component including at least one type of styrene-butadiene copolymer and a reinforcing filler. The bonded styrene content is from 5 to 50 wt. %. The total amount of styrene of an ozone decomposed component S1 including one styrene-derived unit and an ozone decomposed component S1V1 including one styrene-derived unit and one 1,2-bonded butadiene-derived unit is less than 80 wt. % of the amount of bonded styrene. The total amount of styrene of the decomposed component S1V1 is less than 10 wt. % of the amount of bonded styrene. The integrated intensity of an ozone decomposed component S1V2 including one styrene-derived unit and two 1,2-bonded butadiene-derived units is less than 15% of the integrated intensity of all decomposed components including styrene-derived units. The vinyl content of a butadiene portion is not less than 50%.

A steel sheet according to an aspect of the present invention includes a predetermined chemical composition; in which a metallographic structure in a ¼ t portion contains residual austenite of 4 volume % to 70 volume %; [Mn]_γ/[Mn]_ave>1.5 is satisfied in the ¼ t portion; f_γs/f_γ≤0.30 and [C]×[Mn]≥0.15 are satisfied in the ¼ t portion.

A composite sucker rod assembly is provided for use in down-hole wells. The sucker rod assembly includes a plurality of parallel composite strands forming an elongate rod. Preferably, both ends of the rod are fitted with metallic terminus fittings. Each terminus fitting has a tapered cavity with a proximal opening to receive a rod end. The cavity is tapered so as to flare outwardly from said cavity's proximal opening toward the cavity's distal end. The sucker rod assembly further includes a spreader plate, preferably made up of a plurality of pieces, which has holes to receive and splay out the plurality rod strands. A hardened material, such as a hardened resin, is introduced into the cavity and allowed to harden to affix the rod to the terminus fitting. Preferably the hardened resin is compressed by a connection member.

The invention discloses palm wood plywood and a preparation method thereof. The plywood comprises a surface board and a core board, a high-density palm impregnated wood single board formed by the impregnating of impregnated resin is adopted as the surface board, a low-density palm impregnated wood single board formed by the impregnating of the impregnated resin is adopted as the core board, the content of the impregnated resin in the high-density palm impregnated wood single board is 20-55%, and the content of the impregnated resin in the low-density palm impregnated wood single board is 30-65%, the solid content of the impregnated resin is 30-50%, urea-formaldehyde resin, phenol formaldehyde resin, melamine resin or melamine modified urea-formaldehyde resin is adopted, and the preparationmethod of the plywood is further disclosed. The palm wood plywood has the advantages that the mechanical performance and the dimensional stability are excellent and can meet related national standards.

The invention discloses an insulation layer for cable conductors. The insulation layer for cable conductors is composed of the following raw materials in parts by weight: 12-18 parts of polytetrafluoroethylene, 100-150 parts of epoxy acrylic resin, 50-60 parts of chlorosulfonated polyethylene rubber, 8-15 parts of aluminum chloride, 18-25 parts of hydroxy silicone oil, 6-10 parts of plasticizer, 8-12 parts of phenolic aldehyde-polyvinyl acetal and 4-8 parts of silicon dioxide. The insulation layer for cable conductors has the advantages of thermal insulation, moisture resistance, high flexibility, high tensile resistance, high tear resistance and the like.

An objective is to improve the spinnability and the productivity and increase the tensile strength of a polyester fiber containing polyhydroxyalkanoate. Disclosed is a biodegradable aliphatic polyester fiber containing a polyhydroxyalkanoate, a nucleating agent, and a lubricant, wherein the nucleating agent contains pentaerythritol, and the lubricant contains at least one of behenic amide, stearic acid amide, erucamide, oleic amide, and a combination thereof.