55results about How to "Little change in characteristics" patented technology

Provided are: a fiber-reinforced composite material which is suppressed in morphology variation due to the molding conditions, while having excellent mode I interlaminar fracture toughness and excellent wet heat resistance; an epoxy resin composition for obtaining the fiber-reinforced composite material; and a prepreg which is obtained using the epoxy resin composition. An epoxy resin composition for fiber-reinforced composite materials, which contains at least the following constituent elements [A]-[F], and which is characterized by containing 5-25 parts by mass of constituent element [C] and 2-15 parts by mass of constituent element [E] per 100 parts by mass of the total epoxy resin blended therein. [A] A bifunctional amine type epoxy resin [B] A tetrafunctional amine type epoxy resin [C] A bisphenol F epoxy resin having an epoxy equivalent weight of 450-4,500 [D] An aromatic amine curing agent [E] A block copolymer having a reactive group that can be reacted with an epoxy resin [F] Thermoplastic resin particles that are insoluble in an epoxy resin

The invention discloses a polymer electrolyte which comprises, as the main component, a block / graft copolymer comprising, as constituent components, polymer blocks (A), (B) and (C) which cause phase-separation from one another, wherein the polymer block (A) comprises a vinyl compound unit as the main repeating unit and has an ion-conductive group, the polymer block (B) comprises a vinyl compound unit capable of forming a flexible phase as the main repeating unit and forms a flexible phase, and the polymer block (C) comprises a styrene derivative unit carrying an alicyclic hydrocarbon group having a polycyclic structure as the main repeating unit and forms a restrained phase; a membrane; a membrane-electrode assembly; and a solid polymer fuel cell. The polymer electrolyte has excellent durability and heat resistance, and shows little change in properties, such as the change in dimension between a dried state and a wet state, the change in mechanical properties and the change in methanolcross-over before and after the immersion in a methanol solution. The polymer electrolyte can be used stably in a solid polymer fuel cell during the long-term operation of the solid polymer fuel celland enables excellent start-up performance of the solid polymer fuel cell.

The present invention provides a driving circuit of a liquid crystal display device, which improves the Vgoff characteristics of the driving circuit composed of 4 thin film transistors and 2 capacitors, and makes the characteristic change of the thin film transistor caused by the DC stress of the driving circuit composed of 6 thin film transistors minimum, so that the operating characteristics are stable. The drive circuit of the liquid crystal display device includes: the first and second transistors are connected in series between the output stage of the n-1 circuit and the Vss stage; the third transistor is driven by a clock signal; the fourth transistor is connected to the drain To the source of the third transistor; the fifth and sixth transistors are connected in series between the VDD terminal and the Vss terminal; the seventh transistor is driven by the output signal of the n+1 circuit; the eighth transistor is driven by the n+ The output signal of the circuit 1 is driven; the first capacitor is formed before the gate of the third transistor; and the second capacitor is formed between the gate and drain of the sixth transistor.

A lithium ion capacitor has an electrolytic solution that contains: 100 parts by volume of a solvent containing 20 to 50 parts by volume of propylene carbonate, 10 to 35 parts by volume of dimethyl carbonate, and 15 to 70 parts by volume of ethyl methyl carbonate; and lithium bis(fluorosulfonyl)imide, as an electrolyte. The lithium ion capacitor can maintain its initial high capacitance and low internal resistance, while also undergoing minimal characteristics changes in a low-temperature environment, even after exposure to a high-temperature, high-voltage environment.

A portable acoustic apparatus includes a sound outlet ( 3 ) formed in the front wall ( 61 ) of a housing ( 6 ); an acoustic converting element ( 1 ) fixed in the housing in such a manner that a front chamber ( 2 ) is formed between the acoustic converting element and the front wall ( 61 ), and a back chamber ( 4 ) is formed between the acoustic converting element and the back wall ( 62 ) of the housing ( 6 ); and a duct ( 5 ) that is formed in the front wall ( 61 ) around the sound outlet ( 3 ) and communicates to the outside of the housing. The minimum inner width W of the outer casing ( 63 ) of the housing ( 6 ) is made equal to or less than the standard diameter of the human concha.

Disclosed is a polyimide metal laminate wherein a copper foil and a stainless steel foil are formed on respective sides of a polyimide resin, or a stainless steel foil is formed on both sides of the polyimide resin. This polyimide metal laminate is characterized in that the peel strength between the stainless steel foil or copper foil and the polyimide resin is not less than 1.0 kN / m, the peel strength between the stainless steel foil or copper foil and the polyimide resin after thermally treating the polyimide metal laminate at 350 DEG C for 60 minutes is not less than 1.0 kN / m, and no swelling or deformation occurs in the polyimide metal laminate after the 60-minute heat treatment at 350 DEG C.

The invention relates to a thin film preparation technology, in particular to an infrared optical thin film protective film and a preparation method thereof. The infrared optical thin film protective film is characterized in that the protective film is plated on the outer layer of an infrared optical thin film and is organic silicide containing one non-hydrolysis group and one hydrolyzable group at a minimum; in film-plated equipment, the multilayer infrared optical thin film is prepared on a substrate through an electronic gun or an evaporation blocking method, in the same film-plated equipment, the protective film is prepared on the outer layer of the multilayer infrared optical thin film through the evaporation blocking method. The infrared optical thin film protective film and the preparation method thereof have the advantages that the infrared optical thin film can be effectively protected, hardness is high, friction resistance is good, and meanwhile characteristics of the infrared optical thin film are changed slightly; the preparation method is compatible with a preparation method of a conventional infrared optical thin film, the process matching property is good, the film plating temperature is low, and cost is correspondingly lowered.

A piezoelectric electroacoustic transducer includes a piezoelectric diaphragm having a substantially rectangular shape which vibrates in the thickness direction when an alternating current is applied between electrodes of the piezoelectric diaphragm, a housing which stores the piezoelectric diaphragm, and a pair of terminals formed in the housing by insert molding. One end of each terminal is inserted inside the housing and includes a body portion fixed to the housing and wing portions which extend from both sides of the body portion toward the corners of the housing. The wing portions are not fixed to the housing, and stress-relieving portions are disposed between the body portion and the wing portions so that the wing portions are able to move toward the inside of the housing. Each electrode of the piezoelectric diaphragm is connected to at least one of the wing portions of the terminals by a conductive adhesive.

When a semiconductor film is irradiated with conventional pulsed laser light, unevenness called ridges is caused on the surface of the semiconductor film. In the case of a top gate type TFT, the characteristics of the element vary depending on the ridge, specifically, there is a problem of variation among a plurality of thin film transistors electrically connected in parallel with each other. According to the present invention, when manufacturing a circuit including a plurality of thin film transistors, the width LP of the region (excluding the microcrystalline region) melted by irradiating the semiconductor film with continuous wave laser light is increased, and a plurality of thin film transistors ( active layers electrically connected in parallel with each other).

Disclosed is an adhesive composition (I) characterized by containing a polyurethane polyurea resin (A) having a weight average molecular weight of 80,000-250,000 and an acid number of 3-25 mgKOH / g and an epoxy resin (B). The polyurethane polyurea resin (A) is obtained by reacting a urethane prepolymer (d) having an isocyanate group, a polyamino compound (e) and a monoamino compound (f) under the conditions stated below. The urethane prepolymer (d) having an isocyanate group is obtained by reacting a polyol compound (a), an organic diisocyanate (b) and a diol compound (c) having a carboxyl group. (i) The ratio between isocyanate groups of the urethane prepolymer (d) having an isocyanate group and amino groups of the polyamino compound (e) and the monoamino compound (f), namely amino groups / isocyanate groups is from 0.8 / 1 to 0.999 / 1 (molar ratio). (ii) The ratio of amino groups of the polyamino compound (e) in the 100 mol% of the total of the amino groups of the polyamide compound (e) and the amino groups of the monoamino compound (f) is 90.0-97.0 mol%.