49results about How to "Small specific gravity" patented technology

The present invention provides a rubber composition having adequate foamability, uses thereof, a copolymer contained in the rubber composition, a rubber composition capable of providing a cross-linked foam, which has a low specific gravity and an excellent shape-retaining property even when the usage of a nonconjugated polyene is reduced, and a cross-linked rubber and a cross-linked foam, which are produced from the rubber composition. A copolymer (A) according to the present invention is a copolymer including structural units derived from ethylene [A], an α-olefin [B], a nonconjugated polyene [C-1], in which one carbon-carbon double bond (C═C) polymerizable with a metallocene catalyst is present in one molecule, and a nonconjugated polyene [C-2], in which two bonds of C═C polymerizable with the metallocene catalyst are present in one molecule, and being synthesized with the metallocene catalyst, wherein (1) the units derived from the component [B] constitute 10 to 50 percent by mole, (2) the total of the units derived from the component [C-1] and the units derived from the component [C-2] is 1.0 to 6.0 percent by mole, (3) the molar ratio of the units derived from the component [C-1] to the units derived from the component [C-2] is 75 / 25 to 99.5 / 0.5, (4) [ML (1+4) 100° C.] is 10 to 200, and (5) 50>activation energy of fluidization (kJ / mol)>35 is satisfied.

A packaging material is provided that can provide a packaging bag or container cover in which the contents is shielded from the atmosphere and tightly sealed, a small hole is formed in the appropriate locations, without special processing of the heat seal portion, and the internal pressure is maintained with high stability at a level above the normal pressure. The packaging material is suitable, for example, for heating in a microwave oven. The packaging material uses a film in which a heat sealing agent (4) with a low melting point is applied to a prescribed zone of an oriented film (2) made of a synthetic resin, a cutting line (5) is cut in the oriented film (2) made of a synthetic resin in the form of a solid or broken line passing through the zone coated with the heat sealing agent (4), and a cast film (3) made of a synthetic resin and having heat sealing properties is affixed to the oriented film (2) made of a synthetic resin. Such film is used for a packaging bag (1) or a container cover.

An object of the invention is to provide a holding and sealing mat material of a catalytic converter for purifying an exhaust gas which can prevent inorganic fibers from flying in all directions from a surface of the holding and sealing mat material, and can keep a working environment at a time of assembling good. In the holding and sealing mat material of a catalytic converter for purifying an exhaust gas, which is arranged between a catalyst carrier and a shell covering the catalyst carrier from the outside thereof, the holding and sealing mat material includes a mat-like material consisting of inorganic fibers and being formed in a mat shape and a binder of 0.5 to 20 weight % of an organic binder or an inorganic binder, which is attached to the mat-like material, wherein a filling bulk density of the holding and sealing mat material after being assembled is within a range between 0.1 and 0.6 g / cm3, and wherein in the case of estimating distribution rates of solids constituents in the binder attached to the mat-like material by dividing the mat-like material into three equal parts of an upper portion, a middle portion and a lower portion in a thickness direction, the distribution rates of the upper portion and the lower portion are higher than that of the middle portion.

The present invention provides a resin-molded component for signal reader, which is light in weight and is able to improve the vibration damping property and to increase the resonance frequency, and which is excellent in heat dissipation. Specifically, it provides a resin-molded component for signal reader structured by 55 to 75% by weight of liquid crystalline polymer (A) composed of structural units expressed by general formulae (I) through (IV):—O—Ar1—CO—  (I)—CO—Ar2—CO—  (II)—O—Ar3—O—  (III)—O—Ar4—CO—  (IV)(where, Ar1 is 2,6-naphthalene group, Ar2 is selected from 1,2-phenylene group, 1,3-phenylene group, and, 1,4-phenylene group, Ar3 is selected from 1,3-phenylene group, 1,4-phenylene group, and p,p′-polyphenylene group, and Ar4 is 1,4-phenylene group); 20 to 10% by weight of inorganic hollow sphere (B1); and 25 to 15% by weight of fibrous inorganic filler (B2), and has 1.4 or smaller specific gravity d, 0.5 W / m·K or larger thermal conductivity λ, and 10 GPa or larger flexural modulus.

A ground high-temperature high-efficiency solar steam electricity-generating device includes a light convergence assembly (1), a heat exchanger assembly(3), a heat storage chamber assembly(5), a base assembly(2), an oil pump(15), a temperature-controlling valve(16), a steam turbine(13), temperature-controlling valve (16), a steam turbine (13), an electricity-generator (12), a system control circuit, a water pump (9) and a water tank assembly (10). The light convergence assembly (1) includes a glass plate (1-1), Fresnel lenses, a U-shaped groove (1-3), a thermal insulating material, a heat collecting pipe (1-5), high temperature heat conducting oil(6-6), a frame (1-7), a rib-plate and a spindle sleeve. The high temperature heat conducting oil(6-6) in the heat collecting pipe (1-5) is communicated with the heat exchanger assembly (3) and the heat storage chamber assembly (5), so that the warm water in the heat exchanger assembly (3) is quickly converted into high temperature steam which drives the steam turbine (13) and the electricity-generator (15) to generate electrical energy. The device can realize high solar utilization, high automaticity, simple structure, lower cost, small size, and is safe and reliable.

A hydraulic lash adjuster for an internal combustion engine is disclosed. The hydraulic lash adjuster includes a low-pressure chamber defined in the plunger and filled with a hydraulic fluid and a high-pressure chamber filled with hydraulic fluid defined in a lower interior of the cylinder and partitioned by the bottom wall of the plunger from the low-pressure chamber. A valve port is formed through the bottom wall of the plunger so as to communicate with both the low-pressure and high-pressure chambers. The valve port has at the high-pressure chamber side an opening edge formed with a valve seat face. A valve element is provided in the high-pressure chamber so as to abut and depart from the valve seat face, thereby closing and opening the valve port. The valve element is made of a material having a specific gravity smaller than steel.

Provided is a urinal drain trap which is capable of preventing diffusion of odor for a long period of time. The urinal drain trap (10) is equipped with a lid (11) having an inlet (11A); a body (12) having an outlet (12C); and a tubular partition wall (13). The interior of the body (12) is divided into a first region (31) and a second region (32). The first region (31) and the second region (32) are linked with each other by a third region (33). Sealing liquid is injected into the first region (31), this sealing liquid being non-water-soluble, having a lower specific gravity than urine, and forming a sealing layer (S) at an elevation above retained urine. In a peripheral area of the lower end of the partition wall (13), there is formed a connecting portion (14) which extends laterally. In a peripheral area of the tip of the connecting portion (14), there is formed a folded portion (15) which extends upward. Between the partition wall (13) and the folded portion (15), the inlet (11A) is provided, in such a way as to form a through opening, at a location where urine flows in from above. The outlet (12C) is located in the second region (32) and is open at an elevation above the upper end of the folded portion (15).

[Object] Provided are a “eutectic colloidal crystal” which is an aggregate of plural kinds of colloidal crystals having different lattice constants, a solidified body of the eutectic colloidal crystal, and methods for producing them.[Resolution means] The eutectic colloidal crystal of the present invention contains two or more kinds of colloidal crystals composed of substantially monodispersed colloidal particles having different particle sizes. This eutectic colloidal crystal is obtained by providing a colloidal dispersion of two or more kinds of colloidal particles having different particle sizes, and a polymer which will not substantially adsorb to the colloidal particles (the coefficient of variation in particle size of these colloidal particles is less than 20%) dissolved in a dispersion medium (dispersion preparation process), and allowing the colloidal dispersion to stand (eutectoid process).

A flow regulating valve (11), which has a valve disk (11b) operably disposed in a flow channel and is capable of regulating the flow of fluid according to the valve opening degree of the valve disk (11b), is characterized by comprising a stress detecting means (13) for detecting the flow-channel-direction force component of a load applied to the valve disk by the fluid, and a valve opening degree detecting means (12) for detecting the degree of opening of the valve disk. The flow rate calculating means (14) finds the flow rate (Qm) from the stress (fm) obtained from the stress detecting means and from the valve opening degree (θm) obtained from the valve opening degree detecting means. A control means (15) controls a valve disk driving means (18) on the basis of the flow rate to drive the valve disk for opening and closing. This makes it possible to find the flow rate with higher sensitivity and accuracy than in the prior art, the construction being compact and simple, providing stabilized data.

The present invention provides a rubber composition having adequate foamability, uses thereof, a copolymer contained in the rubber composition, a rubber composition capable of providing a cross-linked foam, which has a low specific gravity and an excellent shape-retaining property even when the usage of a nonconjugated polyene is reduced, and a cross-linked rubber and a cross-linked foam, which are produced from the rubber composition. A copolymer (A) according to the present invention is a copolymer including structural units derived from ethylene [A], an α-olefin [B], a nonconjugated polyene [C-1], in which one carbon-carbon double bond (C═C) polymerizable with a metallocene catalyst is present in one molecule, and a nonconjugated polyene [C-2], in which two bonds of C═C polymerizable with the metallocene catalyst are present in one molecule, and being synthesized with the metallocene catalyst, wherein (1) the units derived from the component [B] constitute 10 to 50 percent by mole, (2) the total of the units derived from the component [C-1] and the units derived from the component [C-2] is 1.0 to 6.0 percent by mole, (3) the molar ratio of the units derived from the component [C-1] to the units derived from the component [C-2] is 75 / 25 to 99.5 / 0.5, (4) [ML (1+4) 100° C.] is 10 to 200, and (5) 50>activation energy of fluidization (kJ / mol)>35 is satisfied.

To provide a β-pinene polymer excellent in heat resistance while having thermoplasticity, and further also having excellent strength, without impairing the inherent characteristics of small specific gravity and excellent transparency. A desired β-pinene polymer having a weight average molecular weight of 90,000 to 1,000,000 and a glass transition temperature of 80° C. or more was obtained by polymerizing β-pinene in the presence of a bifunctional vinyl compound.

The invention discloses a coated wave-absorbing material prepared from nano-graphite powder and a preparation method of the coated wave-absorbing material. The material comprises a wave absorber and an adhesive, the wave absorber refers to the nano-graphite powder with the weight percent of 1%-75%, the adhesive refers to at least one of resin, rubber and plastics, and the weight percent of the adhesive is 25%-99%. The coated wave-absorbing material has the advantages that the nano-graphite powder is small in specific gravity, the tap density of the nano-graphite powder is 0.6-1.0g / cm<3>, the nano-graphite powder is fine in corrosion resistance, can resist corrosion of seawater and various acid-alkali media and has excellent wave-absorbing performance by the aid of small-size effect, surface effect and quantum size effect, wave-absorbing materials at different wavebands can be obtained by adjusting the granularity, the mixing concentration and the coating thickness of the wave absorber, and the wave-absorbing material is light in weight, thin in coating, fine in dispersing performance, strong in wave-absorbing performance, stable and controllable in quality, simple and easy in preparation process and can meet different invisible requirements.

The invention discloses an earphone noise reduction method and an earphone noise reduction device, which are used for improving the noise reduction effect. The earphone noise reduction method providedby the embodiment of the invention is applied to the earphone, the earphone comprises a main microphone, an auxiliary microphone and a bone conduction microphone, and in the earphone noise reductionmethod, environmental noise is acquired through the auxiliary microphone, and the environmental noise is processed to obtain an environmental noise value. When the ambient noise value is greater thana first ambient noise threshold and less than a second ambient noise threshold, a certain ambient noise is indicated, for this purpose, a first human voice signal is acquired through the bone conduction microphone, a first audio signal is acquired through the main microphone, and the first audio signal comprises a second human voice signal and an ambient sound signal. Then, superposing the first human voice signal and the second human voice signal to obtain a target human voice signal; according to the mode, the bone conduction microphone is used for obtaining the human voice, so that the human voice signal is enhanced, the proportion of environmental noise is reduced, and the noise reduction effect is improved.

A Stirling engine comprises a first porous body having a large hole diameter, a second porous body having a small hole diameter and a ring for fixing the first porous body and the second porous body in a pressurization chamber inside a gas outlet closer to the pressurization chamber.

The present invention relates to ethylene vinyl acetate based polymer foams with low density and superior injection molding characteristics, a preparation method thereof and a material for medical and health-care use using the same, more particularly to ethylene vinyl acetate based polymer foams with low density prepared by blending, masticating, pelletizing and foaming a matrix resin comprising ethylene vinyl acetate (EVA) resin and ethylene methyl acrylate (EMA) resin under specific condition, which has low density and superior injection molding characteristics and improved biocompatibility to human body, making them a useful environment-friendly material and particularly applicable to medical or health-care use, a preparation method thereof and a material for medical and health-care use using the same.

There is provided a glass composition having a devitrification temperature of 1000° C. or below, a glass transformation temperature (Tg) of 535° C. or below and a specific gravity within a range from 3 to 4.The glass composition has a refractive index (nd) within a range from 1.60 to 1.75 and an Abbe number (νd) within a range from 50 to 60.

An objective lens for converging light emitted from a light source on an optical recording medium to record and reproduce information consists of a single lens having at least one aspheric surface. The following conditional expressions (1) to (3) are satisfied:N≦1.75  (1)0.5<f / f1<0.6  (2)0.8<d / (NA·De)<1.0  (3)whereN denotes a refractive index,f denotes a focal length (mm),f1 denotes a focal length (mm) of a light source side surface,d denotes a thickness (mm) on an optical axis,NA denotes a numerical aperture on an optical recording medium side, andDe denotes an effective aperture (mm) of the light source side surface.

By adopting the dual differential theory, the invention takes an auxiliary power regulation mode to enable the rotation speed of a planet gear to be not changed and the revolution speed thereof to be changed on the basis of the structure of constant ratio constant mesh gears, so as to realize that an output shaft performs stepless variable speed with progressive dynamic variable-speed ratio i. The stepless variable speed unit is characterized in that a differential gear is in a hollow steel wheel shape; wheel teeth are arranged on an inner ring and an outer ring of the wheel; the internal teeth of the wheel are constantly meshed with two planet gears and provide a revolution supporting point for the planet gears; the external teeth of the wheel are constantly meshed with a variable speed regulation gear pair; and the variable speed regulation gear pair is connected with an auxiliary power machine via an overrunning coupler. When a sun gear obtains main power, the sun gear is respectively applied to a planet gear bracket and the differential gear, and if the rotary resistance is small, the differential gear reversely rotates and the planet gear bracket does not rotate; if the resistance is stopped, the main power is shifted to drive the planet gear bracket to perform positive rotation; if the other power drives the differential gear to perform positive rotation, at the moment double-power is applied, stepless variable speed can occur to the planet gear bracket. The stepless variable speed unit is especially suitable for being used as an automotive variable speed unit with hybrid power.

The invention provides a wear-resisting aluminium alloy material for hubs. The wear-resisting aluminium alloy material comprises the following chemical elements in percentage by mass: 8.4-8.8% of silicon, 0.7-0.9% of magnesium, 1.2-1.5% of titanium, 0.04-0.07% of cerium, 0.4-0.6% of boron, 0.1-0.2% of Hf, 0.06-0.08 of Nb, 0.2-0.4% of V and the balance of aluminum. The wear-resisting aluminium alloy material has the advantages of good abrasion performance, small coefficient of thermal expansion, small specific gravity, good mobility and good crack resistance; by adding a small quantity of cerium, boron, Hf, Nb and V, crystal grains are refined, and the strength and the hardness of the alloy are improved; the alloy is uniform in crystallization and high in strength by reasonably controlling casting aftertreatment temperature and putting alloying elements in batches; the quality of the alloy is relatively stable and uniform by using part of aluminium scrap as a raw material. The alloy is used for manufacturing the hubs, has good casting and forging performances and is high in safety factors and long in service life.

The present invention improves recover percentage at which a mixed chemical solution discharged from a protective film removing device.The protective film removing device includes: a recovery line communicating with an atmosphere surrounding a substrate to recover a mixed chemical solution, an intermediate tank connected to the outlet end of the recovery line, a volatilization preventing liquid supply means for supplying a volatilization preventing liquid having a specific gravity smaller than that of the mixed chemical solution into the intermediate tank in advance, a transfer line having an inlet end connected to the intermediate tank and provided with a valve, a recovery tank connected to an outlet end of the transfer line, a liquid quantity monitoring means for monitoring a quantity of a liquid contained in the intermediate tank, and a control means for opening the valve of the transfer line to transfer the liquid contained in the intermediate tank to the recovery tank when it is decided that the quantity of the liquid contained in the intermediate tank reached a predetermined quantity on the basis of a signal provided by the liquid quantity monitoring means.

The present invention provides a resin-molded component for signal reader, which is light in weight and is able to improve the vibration damping property and to increase the resonance frequency, and which is excellent in heat dissipation. Specifically, it provides a resin-molded component for signal reader structured by 55 to 75% by weight of liquid crystalline polymer (A) composed of structural units expressed by general formulae (I) through (IV): —O—Ar1—CO—  (I) —CO—Ar2—CO—  (II) —O—Ar3—O—  (III) —O—Ar4—CO—  (IV) (where, Ar1 is 2,6-naphthalene group, Ar2 is selected from 1,2-phenylene group, 1,3-phenylene group, and, 1,4-phenylene group, Ar3 is selected from 1,3-phenylene group, 1,4-phenylene group, and p,p′-polyphenylene group, and Ar4 is 1,4-phenylene group); 20 to 10% by weight of inorganic hollow sphere (B1); and 25 to 15% by weight of fibrous inorganic filler (B2), and has 1.4 or smaller specific gravity d, 0.5 W / m·K or larger thermal conductivity λ, and 10 GPa or larger flexural modulus.

A resin-coated metallic pigment in which a coating layer constituted of a single layer or a plurality of layers is formed on a surface of a base particle, an outermost layer of the coating layer being composed of a resin which is a polymer containing one or more compounds selected from a monomer and an oligomer having two or more polymerizable double bonds as a constituent unit, and a surface portion of the outermost layer being treated with a surface modifier which is a compound having one polymerizable double bond.

There is provided a glass composition having a devitrification temperature of 1000° C. or below, a glass transformation temperature (Tg) of 535° C. or below and a specific gravity within a range from 3 to 4.The glass composition has a refractive index (nd) within a range from 1.60 to 1.75 and an Abbe number (νd) within a range from 50 to 60.

The invention discloses a diagnosis result standardization method, a related device, equipment and a storage medium, and the method comprises the steps: obtaining a standard diagnosis result set according to an original diagnosis result based on a standard diagnosis database; wherein the standard diagnosis result set comprises at least two standard diagnosis results; reordering each standard diagnosis result in the standard diagnosis result set by using the similarity between the original diagnosis result and each standard diagnosis result; wherein the similarity at least comprises semantic similarity and text similarity. In this way, the accuracy and reliability of reordering of the standard diagnosis results can be improved.

The invention discloses a parallel jet electrolytic process, wherein an electrolyte after being pressurized is jetted in parallel from a position at the bottom and near a surface of a cathode at a rate of 0.5-2.5 m / s into a gap between the cathode and an anode. During the production process, the pressurized electrolyte is jetted in parallel along the surface of the cathode, and the electrolyte flows from bottom to top at the cathode side and moves from top to bottom at the anode side simultaneously, which thus achieves a side cutting function on the cathode and the anode; and the side cutting flow of the electrolyte from top to bottom at the anode is able to greatly increase the settling rate of the anode slime and avoid its adhesion to the anode to form an anode slime layer. The invention also provides a parallel jet electrolytic device.

A door hole seal is provided between an inner panel and a door trim of an automobile door. The door hole seal comprises a slit mechanism used to pull out a wire harness from an outer-cabin side to an inner-cabin side or from the inner-cabin side to the outer-cabin side. The slit mechanism comprises a first slit extending up and down with respect to the main sheet and a circular hole formed at a lower end of the first slit. The circular hole has a diameter that is identical to or slightly smaller than that of a wire harness, and is arranged to receive the wire harness.

First, water in a filter is drained to a low level, and the remaining water is adjusted to an alkaline condition so as to break up the flocs in the filter media. Then, a pneumatic rinsing process is performed, by introducing air from the bottom of the filter for shaking the filter media, so as to loosen the flocs. After that, a reverse rinsing process is performed, by providing water from the bottom of the filter, so that small flocs, having a relatively small specific gravity, float up to be removed. Finally, a sterilizing process is performed upon the filter media, and the impurities remaining in the filter media are cleaned up to ensure the quality of water to be filtered.