89results about How to "Increase material density" patented technology

The invention modulates the air volume in foam cores of cushioning support devices and any other support apparatus using foam or similar materials. The foam core can be incrementally modulated to realize an infinite number of comfort levels as to softness and support firmness. The core consists of self-inflating open-cell flexible polyurethane foam and is completely sealed within an enclosure fitted over it, with one or more valves installed in the side walls which communicate with the outside air. Through the valves air is selectively withdrawn from the foam core, allowing the foam's density to increase. The invention uses relatively inexpensive foam, but through air volume modulation achieves a tactile feel of supreme softness for the user, without giving up the necessary firmness to support the body, as happens with very soft foam (bottoming-out or hammock-effect). When air is extracted from a self-inflating foam core, the surface of the core will soften uniformly while maintaining its support firmness. Contrary to this, when pressure is exerted on, for example, traditional coil spring core mattresses, their surface will harden. Integral part of the invention is a device using balanced springs in valve assemblies to avoid compression set, an irreversibly solid state of totally air-depleted foam.

The invention modulates the air volume in foam cores of cushioning support devices and any other support apparatus using foam or similar materials. The foam core can be incrementally modulated to realize an infinite number of comfort levels as to softness and support firmness. The core consists of self-inflating open-cell flexible polyurethane foam and is completely sealed within an enclosure fitted over it, with one or more valves installed in the side walls which communicate with the outside air. Through the valves air is selectively withdrawn from the foam core, allowing the foam's density to increase. The invention uses relatively inexpensive foam, but through air volume modulation achieves a tactile feel of supreme softness for the user, without giving up the necessary firmness to support the body, as happens with very soft foam (bottoming-out or hammock-effect). When air is extracted from a self-inflating foam core, the surface of the core will soften uniformly while maintaining its support firmness. Contrary to this, when pressure is exerted on, for example, traditional coil spring core mattresses, their surface will harden. Integral part of the invention is a device using balanced springs in valve assemblies to avoid compression set, an irreversibly solid state of totally air-depleted foam.

To provide a slurry for positive electrodes having excellent weight accuracy at the time of application, which enables the production of a lithium ion secondary battery that has high capacity and excellent cycle characteristics at high potentials, said lithium ion secondary battery being flexible and free from the occurrence of cracks in an active material layer when bent.

[Solution] A slurry for lithium ion secondary battery positive electrodes according to the present invention contains a positive electrode active material, a binder, a conductive material and an organic solvent. The binder contains a nitrile group-containing acrylic polymer and a fluorine-containing polymer; and the viscosity ratio ((viscosity at a shear rate of 2 sec⁻¹)/(viscosity at a shear rate of 20 sec⁻¹)) of this slurry as measured by a coaxial double cylinder viscometer is 1.0-2.5.

A compliant golf club head permits a more efficient impact between a golf ball and the golf club head. Material and geometry constraints of a striking plate of the golf club head can reduce energy losses caused by large strain and strain rate values of the golf ball, these constraints on the striking plate yield a measure of the impact efficiency of the golf club head. Designating a required natural frequency range of the striking plate provides improved impact efficiency between the golf ball the golf club head.

The invention relates to a nickel-zinc secondary battery and a preparation method thereof. The technical scheme is that: the preparation method comprises the following steps of: mixing 85 to 99 weight percent of anode active substance, 0.5 to 10 weight percent of anode additive and 0.5 to 5 weight percent of anode bonding agent uniformly; adding water into the mixture to prepare paste; coating the paste on an anode conductive matrix; drying, performing roll forming and slicing to obtain an anode plate; mixing 75 to 99 weight percent of cathode active substance, 0.5 to 20 weight percent of cathode additive and 0.5 to 5 weight percent of cathode bonding agent uniformly; adding water into the mixture to prepare paste; coating the paste on a cathode conductive matrix; drying, performing roll forming and slicing to obtain a cathode plate; separating the anode plate from the cathode plate by using diaphragm paper; winding the separated anode plate and cathode plate to be a cylindrical shape; sleeving the cylindrical object into a battery case; injecting electrolyte, wherein the anode plate is connected with an anode cap by a lug and the cathode plate contacts with the battery case; and sealing the battery to form the nickel-zinc secondary battery. The nickel-zinc secondary battery prepared by the method has a long cycle life, a high discharging platform and high specific energy.

The present invention relates to a rechargeable lithium ion battery having an electrode plate with a high active material density and high electrolyte permeability. Upon producing the rechargeable lithium ion battery, hollow resin particles that can be collapsed by rolling are incorporated in a positive electrode mixture layer or a negative electrode mixture layer before the electrode mixture layer is rolled. The hollow resin particles are collapsed in the course of rolling the positive electrode mixture layer or the negative electrode mixture layer, so that the active material density can be easily increased. Further, the collapsed resin particles form unevenness on the surface of the electrode plate and also form open pores in the electrode plate, so that electrolyte permeability can be enhanced. As a result, the discharge capacity and rate characteristics of rechargeable lithium ion batteries can be increased.

A non-aqueous electrolyte secondary battery comprises: a positive electrode sheet comprising a positive electrode mixture containing a lithium-containing transition metal oxide as an active material and a particulate binder; a negative electrode sheet comprising a negative electrode mixture containing a carbon material; a separator interposed between the positive electrode sheet and the negative electrode sheet; and a non-aqueous electrolyte containing a lithium salt, wherein the positive electrode sheet and the negative electrode sheet are wound with the separator interposed therebetween to form an electrode assembly, and the positive electrode mixture has an active material density of 3.0 to 4.0 g/ml. The battery has a long life, high energy density and high output.

The present invention provides a composition based on calcium aluminate cement (CAC) for application in endodontics, comprising: (a) a cement—Al₂O₃ (>68.5 wt %), CaO (<31 wt %), SiO₂ (0.3-0.8 wt %), MgO (0.4-0.5 wt %), and Fe₂O₃ (<0.3 wt %); (b) additives: dispersant at a content of 0.4 to 0.8% by weight of the cement, a plasticizer at a content of 2.0 to 4.0% by weight of the cement, and a radiopaque agent at a content of 20 to 35% by weight of the cement; and (c) water, wherein water/cement ratio lies in the range of 0.19-0.24 in the presence of additives. Cementitious product obtained thereof, after setting time, is also disclosed and characterized by enhanced properties when compared to the most used commercial repair cement, MTA.

A disclosed natural fiber/polymer fibrous layer laminated automobile chair-back sheet material comprises an integrated sheet material formed through lamination and combination of a first surface layer, a core layer and a second surface layer, the first surface layer and the second surface layer are non-woven fabrics, the core layer is a mixed fiber plate, the mixed fiber plate is prepared by compacting natural fiber and needle felt employing polymer fiber as the main composition, and the natural fiber is at least one selected from fibrilia, bamboo fiber, palm fiber and wood fiber. The invention also discloses a production method for the natural fiber/polymer fibrous layer laminated automobile chair-back sheet material. The automobile chair-back sheet material possesses the characteristics of being light in weight, small in density, excellent in breathability, and excellent in strength and toughness. By employing twice baking compaction and cold-press shaping processing in the production process, the sheet material density is improved.

The invention relates to a method for bleaching fibrous materials, in particular lignin-containing materials for producing paper consisting in adding at least a first additive and at least one type of bleaching liquid to a fibrous solution which contains at list one bleaching agent. After mixing said bleaching solution with the fibrous suspension and at the end of determined bleaching time, the bleaching process is ended by adding at least a second additive. Said invention is characterised in that the pH of the fibrous suspension is obtained by adding lime.

A manufacturing method of heat conductive device for an LED has steps of forming a heat sink and an engagement recess in the heat sink by cold forge, punching a heat-conducting disc to form an LED carrier having a mounting portion and a heat-conducting wall formed around the mounting portion, soldering multiple LEDs on the LED carrier, and heating the heat sink to thermally expand the heat sink and assembling the LED carrier and the heat sink so that the heat-conducting wall is assembled with the engagement recess and further chilling the heat sink to thermally retract and tightly hold the LED carrier. The manufacturing method increases contact area and reduces air gaps between the LED carrier and the heat sink to effectively enhance the heat-conducting efficiency of the LED carrier so that the LEDs are operated at a suitable operating temperature to secure a prolonged life duration.

The invention relates to a composition comprising an inorganic phosphatic binder and fillers with a high specific surface area, the use thereof and the preparation thereof.

A programmable resistance, chalcogenide, switching or phase-change material device includes a substrate with a plurality of stacked layers including a conducting bottom electrode layer, an insulative layer having an opening formed therein, an active material layer deposited over both the insulative layer, within the opening, and over selected portions of the bottom electrode, and a top electrode layer deposited over the active material layer. The device uses temperature and pressure control methods to increase surface mobility in an active material layer, thus providing complete coverage or fill of the openings in the insulative layer, selected exposed portions of the bottom electrode layer, and the insulative layer.

An automatic pressure caster for casting the grid plate of electric accumulator is composed of a lead smelting pot, a nozzle unit, an eccentric clamping unit with mould locking cylinder, a mould moving unit with mould moving cylinder, hydraulic system, water cooling system, machine body and mould set.

A method of fabricating an abradable coating of varying density, and such an abradable coating of varying density. According to the invention, the method comprises the following steps: providing a substrate (32) having a first portion with its surface situated at a first level (A), and a second portion with its surface situated at a second level (B) different from the first level; depositing a precursor material on the first and second portions of the substrate (32); compressing the precursor material between the substrate and a bearing surface; and sintering the precursor material as compressed in this way in order to obtain an abradable coating (36) having a first portion (36a) on the first portion of the substrate, and possessing a first density, and a second portion (36b) on the second portion of the substrate, and possessing a second density distinct from the first.

The invention relates to a copper cooling plate and a manufacturing process thereof. The outer edge of the cross section of an inner cavity water way has a curved shape or a plum blossom petal shape, and a steel belt or a steel ring contact surface for mounting the copper cooling plate has a tooth shape. The process comprises the following steps: using a spraying gun to evenly spray a graphite paint on the die cavity inner surface or a die core surface of a die, fixing the steel ring or the steel belt prefabricated with the tooth shape on the inner surface in the die, and preheating the die, the die core and the steel belt or the steel ring until the temperature is between 150 and 400 DEG C; pouring molten copper into the die; closing and pressurizing the die and keeping the pressure with a specific pressure of between 50 and 300 MPa; opening the die to take out the coagulated and formed copper cooling plate; and drawing out steel wire inner cores one by one from the coagulated and formed copper cooling plate, and performing mechanical processing to remove the excess part of the appearance of the copper cooling plate. The copper cooling plate is manufactured by adopting a liquid forging process method, thus the material density, the heat conductivity factor, the appearance precision and the mechanical property are greatly improved, and simultaneously, the characteristic of integral molding is kept.

An artificial turf system has polymeric turf fibers resembling grass, and infill particles interspersed among said turf fibers. At least some of the infill comprises synthetic composite particles containing a thermoplastic polymer and cellulosic fibers, in which thermoplastic polymer is a matrix that binds together the other components of each synthetic particle into a composite particle.

The invention relates to a method for producing a rake head as a gardening tool, in particular to a method for integrally forging a combined bow-shaped rake which is made of 65Mn steel. The method comprises the steps of: sending a rake head steel blank into a heating furnace for heating to above 1000 DEG C, integrally punching and forming rake teeth by using a punching device, and reserving bow-shaped handle stocks at two sides of the rake teeth; secondarily sending into the heating furnace for heating to above 900 DEG C, and forging the bow-shaped handle stocks; thirdly heating to above 1000 DEG C by using a high-frequency heating device, and roll-forging and drawing the bow-shaped handle stocks until the length of the bow-shaped handle stocks reaches the length of half of a bow-shaped handle at most by using a roll-forging device; fourthly heating to above 900 DEG C, synthesizing the bow-shaped handle stocks at two sides of the rake teeth by using a bending machine, then welding, reinforcing and forming the bow-shaped handle; fifthly heating to above 900 DEG C, forming radian of the rake teeth by using the punching device; and cleaning the surface of a rake body, baking finish and spraying. The bow-shaped rake produced by adopting the method has more excellent property, flexibility, elasticity, tensile strength and the like, and can not have phenomena such as deformation, breaking and the like during the use.

The invention discloses a manufacturing method of a zirconium oxide porcelain piece used for an all-ceramic false tooth and belongs to the field of all-ceramic false tooth materials used for lost teeth repair. The manufacturing method includes the following steps: 1) with a zirconium porcelain mixture material as a raw material, performing injection molding to obtain a green body of the zirconium oxide porcelain piece for all-ceramic false teeth; 2) performing dewaxing treatment, low-temperature pre-sintering, mechanical processing and silk-screen printing to the green body; and 3) inspecting and packaging the final product. The zirconium oxide porcelain piece used for all-ceramic false teeth has high internal homogeneity, high density and high breaking strength. An all-ceramic false tooth inner crown produced from the zirconium oxide porcelain piece has high mechanical strength and high density. The zirconium oxide porcelain piece used for the all-ceramic false teeth is designed through CAD/CAM and is processed to manufacture an all-ceramic false tooth inner crown green body which is then sintered, so as to reach strength and appearance effects required in clinical therapy.

A dye-sensitized solar cell is provided, which includes a seal member that is free from swelling and degradation during prolonged sealing use and highly excellent in sealability. The dye-sensitized solar cell includes: a pair of electrode substrates spaced a predetermined distance from each other with their electrically conductive electrode surfaces facing inward; a seal member disposed along peripheries of inner surfaces of the electrode substrates to seal a space between the electrode substrates; and an electrolyte solution filled in the sealed space. The seal member is composed of a material cured by photopolymerizing the following photopolymerizable composition (A), and the electrode substrates each have a portion coated with a (meth)acryloxyalkylsilane silane coupling agent in contact with the seal member. The photopolymerizable composition (A) contains a hydrogenated elastomer derivative having at least one (meth)acryloyl group at at least one of its opposite molecular terminals.