207results about How to "High strength properties" patented technology

Yarns and fishing lines are made by a process that includes the step of exposing an opaque yarn made from ultrahigh molecular weight, gel spun polyolefin filaments to a temperature within the melting point range of the filaments for a time sufficient to at least partially fuse the contact surfaces of adjacent filaments. For ultrahigh molecular weight, gel spun polyethylene, this temperature is preferably within the range from about 150 DEG -157 DEG C. The surface fusion between and among filaments imparts desirable handling characteristics to the ultrahigh molecular weight, gel spun polyolefin yarns and fishing lines that are similar to those of a conventional monofilaments. Preferably, the temperature, residence time, and stretching ratio at the selected temperature are chosen to provide a fishing line exhibiting a tensile modulus within the range from about 230 g/d to about 780 g/d with a tenacity of at least 15 g/d.

The invention discloses an extruding processing technology of an aluminium alloy tubing with large diameter. The method comprises steps of a. proportioning, b. casting, c. uniformization, d. surface treatment on casting rod, e. casting rod heating, f. extrution, g. on-line quenching, h. stretching, i. artificial aging and j. straightening, etc. Strict control on each parameter can solve problems of extruding production of tubing with large diameter, eliminate disadvantages of long production period, low production efficiency, high energy consumption, huge environmental pollution and expensiveauxiliary equipment of rolling and drawing, save cost, simplify arrangement of auxiliary equipment and further reduce failure rate of an apparatus. The energy consumption of the present invention is merely 1/4 that of rolling and drawing, and water consumption is 1/ 8 that of a steam jet pump set; therefore, the invention brings obvious economic effects.

The present invention relates generally to forming a threaded neck in a metal bottle manufactured by a process known as impact extrusion. More specifically, the present invention relates to methods, apparatus and alloy compositions used in the impact extrusion manufacturing of containers and other articles with sufficient strength characteristics to allow threading the container necks to receive a threaded closure on the threaded neck.

A composite wear-resisting shoe sole is prepared from, by weight, 60-100 parts of natural rubber, 10-50 parts of styrene butadiene rubber, 5-20 parts of polar rubber, 10-60 parts of modified white carbon black, 1-10 parts of zinc oxide, 1-4 parts of accelerant, 0.1-0.5 part of antioxidant, 2.5-4.5 parts of active agent, 5-20 parts of filler and 1-10 parts of sulfur .The filler is tetrapod-like zinc oxide whiskers .According to the composite wear-resisting shoe sole, the natural rubber and a small amount of polar rubber are jointly used as main rubber materials, the white carbon black subjected to toluene diisocyanate graft modification is added to serve as a reinforcing material, the tetrapod-like zinc oxide whiskers of a highly regular structure are used as a filling frame, the accelerant, the composite antioxidant and the active agent are added in sequence, and the composite wear-resisting shoe sole with high slippery resistance and tear strength and a remarkably improved frictional coefficient is prepared.

The object of the invention is to provide an extra-fine copper alloy wire, an extra-fine copper alloy twisted wire, an extra-fine insulated wire, a coaxial cable having high intensity, low resistance and high heat tolerance, their manufacturing method and a multicore cable thereof. The extra-fine copper alloy wire has 1 to 3 weight % of silver in the copper, a wire diameter less than 0.025 mm, and a tensile strength of more than 850 MPa, an electrical conductivity of more than 85% IACS after heat treatment; the coaxial cable (20A) is configured that, an inner conductor is formed by an extra-fine copper alloy twisted wire (3) twisted from seven extra-fine copper alloy wires (1), the inner conductor is then peripherally envelopped with a solid insulator (5a) to form an extra-fine insulated wire (10), a plurality of conductor wires (13) are winding in a screw shape on the periphery of the extra-fine insulated wire along a length direction of the extra-fine insulated wire to form an outer conductor (15), thereafter, the outer conductor is envenlopped with a protection layer (17).

Provided are a fiber-reinforced composite material excellent in heat resistance and strength properties, an epoxy resin composition to obtain the fiber-reinforced composite material, and a prepreg obtained by using the epoxy resin composition. Further provided are a fiber-reinforced composite material having less volatile matters during the curing time, and having excellent heat resistance and strength properties, an epoxy resin composition to obtain the fiber-reinforced composite material, and a prepreg obtained by using the epoxy resin composition. Provided are: an epoxy resin composition for a fiber-reinforced composite material, comprising an amine type epoxy resin [A], an aromatic amine curing agent [B], and a block copolymer [C] having a reactive group capable of reacting with an epoxy resin; a prepreg obtained by impregnating a reinforced fiber with the epoxy resin composition; and a fiber-reinforced composite material obtained by curing the prepreg. Further provided are: an epoxy resin composition comprising an epoxy resin [A] having two or more of four- or more-membered ring structures, and having either one of a glycidyl amino group directly bonded to the ring structure or a glycidyl ether group directly bonded to the ring structure, epoxy resin [B] having three or more of functional groups, a curing agent [C], and an elastomer component [D]; a prepreg obtained by impregnating a reinforced fiber with the epoxy resin composition; and a fiber-reinforced composite material obtained by curing the prepreg.

The present invention provides a top frame made from a thermoset foam material. The top frame includes a pair of substantially parallel sides and a pair of substantially parallel ends connected to the sides to form a generally rectangular frame structure. The frame structure has an inner layer and outer surface defining a thickness. The thermoset foam material varies in density along the frame structure thickness such that the density of the thermoset foam material is greatest near the frame structure outer surface to form a hard outer shell.

This invention provides a helical spring formed of plastic material, comprising a pair of end coils situated at respective ends of said helical spring; at least one full pitch active coil between said pair of end coils; a pair of transition coils, each transition coil interconnecting an end of a respective end coil to an end of a respective proximate full pitch active coil, and having a varying pitch.

A process is provided for strengthening a porous substrate. The process includes providing a substrate having intersecting fibers, where the intersecting fibers cooperate in the final substrate product to form an open pore network. Pathways are opened into the fibrous substrate structure, which enable a flow of gas into the or through the substrate. The substrate is positioned in a CVD (chemical vapor deposition) station, and one or more layers of a strengthening agent is deposited. The deposited layer or layers form a strong coating around fibers and fiber intersections to provide additional strength to the substrate. The strengthened substrate may then be used in wide variety of applications and fields. Advantageously, the disclosed fiber strengthening process produces a substrate having high porosity and higher strength characteristics as compared to a non-strengthened substrate.

Disclosed are composite laminates that can exhibit high strength and/or low dielectric loss and can also be lightweight. The laminates include layers formed of high modulus polyolefin fiber. The fibers can be woven or knit to form a fabric or can be included in a nonwoven fabric that can be one or more layers of the composite structures. The layers including the high modulus polyolefin fibers can include other fibers, such as fiberglass. The composites can also include layers of other materials, for instance layers formed of polyaramids, fiberglass, or carbon fiber wovens or nonwovens. The composites can advantageously be utilized in low loss dielectric applications, such as in forming circuit board substrates, or in applications beneficially combining strength with low weight, such as automobile and boat materials.

The invention relates to a manufacturing method of high branching degree acrylamide graft copolymer taking amylopectin as the framework. The manufacturing method comprises the following steps: A) carrying out free radical grafting reaction with amylopectin, water-soluble vinyl monomers (such as acrylamide), optional carbamide and optional reaction type surfactant; and B) adding cross-linking monomer and cross-linking agent that can react with the cross-linking monomer to carry out modification reaction for obtaining wet slurry, then dry up the slurry optionally, so that high branching degree and slightly cross-linked water-soluble graft polymer (or copolymer) is prepared. At 25 DEG C, the rotary viscosity the aqueous solution of which the concentration is 2wt% is generally within the range of 2000 to 70,000 mPa.s, wherein the aqueous solution is made of water. The graft polymer is used as biomedical material, water absorbing material, water-based ink coating, polymer additives, separation film material or photosensitive material.

The invention relates to conductive materials particularly to serve as a heater. Heating means formed by or with electrically conductive materials are known and particularly effective for its flexibility is that sold under the British, Community and US Registered Trade Mark INDITHERM. Conductive rails are used to provide electrical connection to a source of power that need to have a commensurate flexibility, and the object of the invention is to ensure the maintenance of power to the full length of the conductive rail. This objective, is met by a construction comprising spaced first rails for the supply and return of electrical power, the said rails having a flexibility compatible with the semi-conductive material, and there being a supplementary rail attached to each first rail along the length thereof, the supplementary rails being flexible and having strength characteristics greater than those of the first rails.

The invention relates to a steel strip, in particular to a medium-strength packaging steel strip and a production method thereof. The medium-strength packaging steel strip comprises the following components in percentage by weight: 0.05 to 0.10 percent of C, 0.10 to 0.15 percent of Si, 1.00 to 1.55 percent of Mn, less than or equal to 0.05 percent of P, less than or equal to 0.050 percent of S and the balance of Fe. The production method of the medium-strength packaging steel strip comprises the following steps: a) cold-rolled roll unrolling; b) steel strip longitudinal cutting and stripping; c) surface blueing; d) cooling and washing; e) painting; f), drying coatings; and g) rolling. The medium-strength packaging steel strip solves the technical problem that the packaging steel strip produced by using a cold-rolled roll with a carbon content of less than 0.10 percent has a tensile strength which cannot be kept over 800MPa stably and a breakage elongation of more than 6 percent.

In an electrolyte sheet for a solid oxide fuel cell according to the present invention, the number of flaws on at least one of surfaces of the sheet detected by a fluorescent penetrant inspection is 30 points or less in each of sections obtained by dividing the sheet into the sections each measuring 30 mm or less on a side. A unit cell for a solid oxide fuel cell according to the present invention comprises a fuel electrode, an air electrode, and the electrolyte sheet for a solid oxide fuel cell according to the present invention, which is disposed between the fuel electrode and the air electrode. A solid oxide fuel cell of the present invention includes the unit cell for a solid oxide fuel cell according to the present invention.

Disclosed are composite laminates that can exhibit high strength and/or low dielectric loss and can also be lightweight. The laminates include layers formed of high modulus polyolefin fiber. The fibers can be woven or knit to form a fabric or can be included in a nonwoven fabric that can be one or more layers of the composite structures. The layers including the high modulus polyolefin fibers can include other fibers, such as fiberglass. The composites can also include layers of other materials, for instance layers formed of polyaramids, fiberglass, or carbon fiber wovens or nonwovens. The composites can advantageously be utilized in low loss dielectric applications, such as in forming circuit board substrates, or in applications beneficially combining strength with low weight, such as automobile and boat materials.

A high-entropy alloy having ultra-high strength and high hydrogen embrittlement resistance due to formation of a microstructure at a low strain may be produced without a severe plastic deformation.

A method for producing the high-entropy alloy includes (a) annealing and homogenizing an initial alloy material at 1000 to 1200° C. for 1 to 24 hours; and (b) rolling the annealed and homogenized initial alloy material into a rod, at a cryogenic temperature of −100 to −200° C. while pressing the initial alloy material in multi-axial directions at a strain of 0.4 to 1.2, thereby to produce the high-entropy alloy having intersecting twins as a microstructure, and secondary fine twins formed in the intersecting twins, wherein the initial alloy material contains Co of 5 to 35%, Cr of 5 to 35%, Fe of 5 to 35%, Mn of 5 to 35%, and Ni of 5 to 35%, based on weight %.

The invention relates to the technical field of magnetic materials, and provides a high-Bs high-strength manganese-zinc ferrite material in order to solve the problems that a traditional manganese-zinc ferrite material is low in magnetic strength, high in magnetic conductivity and low in Curie temperature after loading current. The material is composed of a main component and additives; the main component comprises, by mole percent, 56-63.8% of Fe2O3, 22-32% of MnO, 7-15% of ZnO and 1.2-4.2% of NiO; according to the total quantity of the main component, the additives comprise 10-100 ppm SiO2,200-1000 ppm CaCO3, 200-300 ppm MoO3, 250-600 ppm V2O5, 100-300 ppm Nb2O5, 100-300 ppm ZrO2 and 100-500 ppm SnO2. In the formula of the MnZn ferrite material, an iron-rich formula with the molar ratioof Fe2O3 higher than 55% is designed so that high-Bs can be greatly improved, and the superposition performance of the high-Bs can be further improved. Through synergistic interaction and mutual effects of the additives, the grain growth is uniform, the mechanical strength can be improved, the grain resistivity can be increased, and the loss of the MnZn ferrite material can be reduced.

The invention discloses a high-strength electroplating PC/ABS alloy material and a preparation method thereof. The high-strength electroplating PC/ABS alloy material is prepared by comprising the following raw materials in parts by weight: 40-60 parts of PC, 40-60 parts of ABS, 5-10 parts of ABS-g-MAH compatilizer, 1-5 parts of GMA toughening agent, 0.5-1 part of nano calcium carbonate, 0.2-0.5 part of antioxidant 168, and 0.2-0.5 part of lubricant. By adding GMA toughening agent, and nano calcium carbonate in preparation of the PC/ABS alloy material, the modified PC/ABS alloy has higher tensile strength and bending strength, and the PC/ABS alloy material has excellent rigidity; the impact strength of the electroplating PC/ABS alloy material can be improved synergistically by the GMA toughening agent and ABS-g-MAH compatilizer, and the electroplating PC/ABS alloy material has impact toughness of excellent rigidity; and the electroplating PC/ABS alloy material added with GMA toughening agent and nano calcium carbonate does not influence the electroplating performance, and is especially applicable to automobile outer door electroplating handles and inner door electroplating clasping hands and other products which are frequently subjected to drawing force.