154results about How to "Excellent heat resistance" patented technology

The invention is a catalyst formed by covering each surface of particles in a ceramic support with an alumina thin film and holding an active catalyst component with the surface of the thin film, which is large in the pore size and porosity and small in the pressure loss irrespectively of forming the alumina thin film on the surface and is produced, for example, by immersing the ceramic support in an aluminum-containing metallic compound, preliminarily firing, immersing in hot water, drying, firing and finally holding the active catalyst component on the alumina thin film on the surface of the support.

A slurry for forming an insulating layer of the present invention includes heat-resistant insulating fine particles, a thickening agent, and a dispersion medium. The insulating fine particles are dispersed in the dispersion medium. The slurry for forming an insulating layer has a viscosity of 5 to 500 mPa·s. The proportion of particles with a particle size of 1 μm or less in the insulating fine particles is 30 vol % or more and the proportion of particles with a particles size of 3 μm or more in the insulating fine particles is 10 vol % or less. An electrochemical device of the present invention includes a separator for an electrochemical device of the present invention that is produced using the slurry for forming an electrochemical device of the present invention.

A polyamide resin composition includes (A) polyamide resin, (B) white pigment, and (C) sodium phosphate salt.

The process of preparing nanometer noble metal solution is one chemical reduction process to reduce Cu, Ag or Au ion stabilized with different dispersant into nanometer Cu, Ag or Au particle while adding various kinds of protecting agent to inhibit the agglutination of nanometer particle. The process can prepare superfine nanometer noble metal solution of average granularity smaller than 5 nm and with high stability and greatly raised tolerance to acid, alkali, oxygen, light and heat, and the superfine nanometer noble metal solution has altered physical characteristic and expanded application range.

An organic compound having excellent heat resistance, an excellent amorphous nature, an excellent ability to transport charges, highly excited singlet and triplet states, and excellent solubility in an organic solvent is an organic compound represented by Formula (I):

The present invention is directed to a coupler that includes a coupler structure including at least one first transmission line disposed on a first major surface of a coupler dielectric substrate and at least one second transmission line disposed on a second major surface of the coupler dielectric substrate. The coupler structure includes four symmetric ports such that each port of the four symmetric ports is characterized by substantially identical impedance characteristics. A first ground plane structure is coupled to the coupler structure and including a first outer dielectric material and a first conductive exterior layer disposed substantially parallel to the first major surface. A second ground plane structure is coupled to the coupler structure and including a second outer dielectric material and a second conductive exterior layer disposed substantially parallel to the second major surface. A thermal path is disposed between the coupler structure and at least one of the first conductive exterior layer or second conductive exterior layer. The thermal path is characterized by a thermal resistance substantially within a range between 15 W/mK and 50 W/mK, such that the coupler has a power handling capability of more than 800 W per square inch of heat sink interface.

The invention relates to a sealing composition which comprises a crosslinkable fluoroelastomer, a crosslinking agent for this elastomer and a reinforcing polyimide resin powder; and seals such as O-rings, made by molding the composition into a prescribed shape and crosslinking the molded article. According to the invention, seals free from metals and sulfur can be made from a fluoroelastomer suitable for the production unit for semiconductor devices without a scatter of physical properties within one seal or among seals, and the obtained seals are lowered in the compression set determined ate the same hardness level to cause little permanent set by compression in use, thus having a prolonged service life.

Disclosed is a carbon-fiber-reinforced composite material that is suitable for use as a construction material and exhibits high mechanical strength in harsh usage environments such as low-temperature environments and high-temperature moisture-absorbing environments. Also disclosed are an epoxy resin composition for producing the aforementioned carbon-fiber-rein-forced composite material and a prepreg obtained through the use of said epoxy resin composition. Said epoxy resin composition comprises at least the following constituents, by mass with respect to the total mass of the composition: (A) between 20% and 80% of an epoxy resin having the structure represented by formula (1); and (B) between 10% and 50% of an epoxy resin that has at least two ring structures with four or more members each and also has one amine glycidyl or ether glycidyl directly connected to a ring structure.

The invention belongs to a polyurethane elastomer material and a preparation method thereof and in particular relates to non-yellowing alkali deweighting wet method dyeing polyurethane resin for superfine fiber synthetic leather and a preparation method thereof. The invention adopts the following technical scheme that: the non-yellowing alkali deweighting wet method dyeing polyurethane resin for the superfine fiber synthetic leather is characterized by mainly comprising the following components based on the total mass of the polyurethane resin: 16 to 20 percent of macromolecular dihydric alcohol compound, 2.5 to 4 percent of chain extender, 7.5 to 10.5 percent of diisocyanate and 68 to 72 percent of solvent, wherein the chain extender consists of dihydric alcohol, diamine and an alcohol amine compound. According to the above scheme, the invention provides the non-yellowing alkali deweighting wet method dyeing polyurethane resin for the superfine fiber synthetic leather and the preparation method thereof so as to solve the problems at present.

The invention discloses a special modified rosin resin for road marking paint and a preparation method of the special modified rosin resin. The modified rosin resin comprises the following raw materials in percentage by weight: 67.4%-84.8% of gum rosin, 10%-18% of glycerol, 2%-8% of fumaric acid, 3%-6% of lauric acid, 0.1% - 0.3% of antioxidant and 0.1% - 0.3% of ultraviolet light absorber. The preparation method of the special modified rosin resin comprises the following steps of: adding the gum rosin to a reaction kettle, introducing nitrogen, heating so as to dissolve rosin, adding the fumaric acid, the antioxidant, the glycerol and the lauric acid so as to carry out polymerization esterification reaction, then adding the ultraviolet light absorber, uniformly stirring, and cooling to a room temperature, thus obtaining the product. The modified rosin resin produced by the method can be used for ensuring the strong adhesive force of coatings and has good flexibility and the advantages of cost conversation and environmental protection.

A molded article produced by injection-molding a molten form of a flame-retardant aromatic polycarbonate resin composition comprising: 100 parts by weight of an aromatic polycarbonate (A) (Mw: 17,000 to 35,000), 0.01 to 3 parts by weight of inorganic compound particles (B) (average diameter: 10 nm to 10 μm), 0.001 to 0.5 part by weight of an alkali metal salt (C) of an organic sulfonic acid, and 0.01 to 0.5 part by weight of a fluoropolymer (D), wherein the largest FL/t ratio of the molded article is 50 or more, wherein FL is a flow length of the composition in a mold and t is a thickness of the molded article, the FL/t ratios being obtained by measuring the thicknesses of the molded article at portions corresponding to flow paths (L) (from a gate to points at which the flow of the composition stops) of the composition in the mold during the molding, and calculating an integral of (dL/T′) along each (L) (dL: length of a segment of (L), t′: thickness of the molded article at a portion corresponding to the segment), wherein the calculated integrals are defined as the FL/t ratios.

A thermal conductive sheet contains boron nitride particles, an epoxy resin, and a curing agent. The epoxy resin contains a crystalline bisphenol epoxy resin and the curing agent contains a phenol resin having a partial structure represented by the following formula (1).

A binder fiber comprising a polyamide component in at least part of a surface thereof is prepared. The polyamide component contains a semi-aromatic polyamide at least having an aromatic ring unit and a C_3-7 alkane unit which may have a branched CA _1-3 alkyl chain. In the binder fiber, the polyamide component may be (a) a semi-aromatic copolyamide having an aromatic ring unit, a C_3-7 alkane unit which may have a branched C_1-3 alkyl chain, and a C_8-12 alkane unit which may have a branched C_1-3 alkyl chain. The polyamide component may be (d) a combination of (b) a semi-aromatic polyamide and (c) a semi-aromatic polyamide, wherein the polyamide (b) has an aromatic ring unit and a C_3-7 alkane unit which may have a branched C_1-3 alkyl chain, and the polyamide (c) has an aromatic ring unit and a C_8-12 alkane unit which may have a branched C_1-3 alkyl chain.

A flameproof thermoplastic resin composition of the present invention comprises (A) a base resin comprising 40 to 95% by weight of a rubber modified styrene-containing resin (a1) composed of 20 to 100% by weight of a styrene-containing graft copolymer resin (a11) and 0 to 80% by weight of a styrene-containing copolymer resin (a12), and 60 to 5% by weight of polyphenylene ether resin (a2); (B) 2 to 40 parts by weight of a styrene-acrylonitrile copolymer containing 5 to 18% by weight of acrylonitrile per 100 parts by weight of the base resin; (C) 5 to 30 parts by weight of an aromatic phosphoric acid ester compound having a melting point of more than 90° C. per 100 parts by weight of the base resin; and (D) 3 to 30 parts by weight of a phenolic resin per 100 parts by weight of the base resin. The flameproof thermoplastic resin composition may further comprise 0 to 30 parts by weight of an anti-dripping agent, an impact modifier, a plasticizer, a heat stabilizer, an oxidation inhibitor, a light stabilizer, a compatibilizer, pigments, dyes and/or inorganic fillers on the basis of 100 parts by weight of the base resin.

A thermosetting polyimide resin composition is provided which comprises a polyimide resin and an epoxy resin, which has excellent heat resistance, low dielectric constant and low dielectric loss tangent and also yields a cured article having good mechanical properties such as tensile strength and tensile elongation. Also, a process for producing a polyimide resin used in the polyimide resin composition is provided. The thermosetting polyimide resin composition comprises a polyimide resin (X), which has a carboxyl group and a linear hydrocarbon structure having a number-average molecular weight of 300 to 6,000, and an epoxy resin (Y). The polyimide resin is obtained by reacting a prepolymer (A) having an isocyanate group at the end, which is obtained by reacting a polyisocyanate compound (a1) with a polyol compound (a2) having a linear hydrocarbon structure in which a number-average molecular weight of a linear hydrocarbon structure is from 300 to 6,000, with an anhydride (B) of polycarboxylic acid having three or more carboxyl groups in an organic solvent.

A battery separator includes a porous membrane A with a thickness of less than 10 μm including a polypropylene resin, and a porous membrane B laminated thereon including a heat resistant resin and inorganic particles or cross-linked polymer particles, wherein the porous membrane A satisfies a specific range of thickness, average pore size, and porosity, and the entire battery separator satisfies a specific range of thickness, peeling strength at the interface between the porous membrane A and the porous membrane B, and difference in air resistance between the entire battery separator and the porous membrane A.

A battery separator includes a porous membrane A including a polyethylene resin, and a porous membrane B laminated thereon including a heat resistant resin and inorganic particles or cross-linked polymer particles, wherein the porous membrane A satisfies expressions (a) to (c), and the entire battery separator satisfies expressions (d) to (f).

To provide a flexible laminated board coping with mounting conditions under high temperature and high pressure while retaining characteristics possessed by the flexible laminated board. In the flexible laminated board having a metal foil on one surface or both surfaces of an insulating resin layer, the insulating resin layer comprises a plurality of layers of a polyimide resin provided with at least one high elastic modulus resin layer in contact with the metal foil of a polyimide resin with >=1*10<8>Pa storage elastic modulus at 350[deg.]C, and at least one low thermal expansion resin layer of <=20*10<-6>/K linear expansion coefficient, where the rate of thickness of the high elastic modulus layer in the insulating resin layer is in the range of 3-45%.

The invention discloses a preparation method of an ultraviolet-cured acrylic ester hot-melt pressure-sensitive adhesive. The ultraviolet-cured acrylic ester hot-melt pressure-sensitive adhesive for an adhesive tape is in the form of a non-solvent 100-percent hot melt adhesive, is mainly prepared from an acrylic ester series polymer, a photo-initiator component binding to a main chain of the polymer, and a tackifying resin which is adopted as required, can be cured rapidly under the radiation of ultraviolet C (the wavelength is 190 to 280 nanometers), has high heat resistance characteristic at the temperature of 120 to 140 DEG C, can be applied to industrial adhesive tapes, can be taken as a bonding agent for automobile heating components, has the characteristics of nontoxicity, safety, skin affinity and adjustable glass transition temperature, and can be applied in the field of sanitary and medical products. The ultraviolet-cured acrylic ester hot-melt pressure-sensitive adhesive can be coated under a high gram weight and at a high speed on the aspect of coating implementation; the problems of solvent explosion danger, solvent discharge and odor in the solvent type acrylic acid series pressure-sensitive adhesive are solved.

A flameproof thermoplastic resin composition of the present invention comprises (A) 100 parts by weight of a rubber modified styrene-containing base resin composed of 20~100% by weight of a styrene-containing graft copolymer resin and 0~80% by weight of a styrene-containing copolymer resin; (B) 5~40 parts by weight of a phenolic resin; (C) 3~40 parts by weight of a PPE resin having a hindered phenolic structure; and (D) 5~30 parts by weight of an aromatic phosphoric acid ester having a hindered phenolic structure. Said flameproof thermoplastic resin composition may further comprise 0.01~2.0 parts by weight of a fluorine resin to 100 parts by weight of said rubber modified styrene-containing base resin.

The invention discloses an LED fluorescent glue that improves the uniformity of light emission. In parts by weight, the fluorescent glue consists of 1 part of packaging glue, 0.01-1 part of fluorescent powder, 0.01-0.1 part of silica-based inorganic nanoparticles, 0.01 part of ‑1 part silicone granules. Inorganic nanomaterials and silicone particles are mixed in the encapsulation glue, which reduces the sedimentation rate of the phosphor in the encapsulation glue, improves the uniformity of the phosphor distribution in the colloid, makes the white light spot more uniform, and improves the light diffusivity and transmittance. The light rate is maximized, and by changing the propagation path of the light, the light of various wavelengths is more fully mixed, and the spatial color uniformity of the light is further improved. It also provides an LED packaging method and LED that improve the uniformity of light emission, which improves the consistency of products, reduces the probability of uneven color distribution in space due to uneven distribution of phosphor powder, and improves product yield and product production. efficiency.

The invention discloses a phytase mutant and applications thereof. The sequence of the phytase mutant is represented by SEQ ID No.1. The mutant is obtained through the following mutations of amino acid that encodes the amino acid sequence (SEQ ID No.3) of fig aspergillus phytase: A39E, N40D, S42L, V43S, I44V, P46S, R167G, Q169T, P170N, G171R, Q172A, T252R, S253T, T254S, V255D, D256A, T257S, and K258Q. The phytase mutant can be used in feed additive. A mutant (SEQ ID No.2) of novel phytase gene is obtained. The mutant is effective in a wide pH range, has an ideal heatproof characteristic, is suitable for high temperature granulation, and meets the requirements of feed industry.

The invention provides a preparation method of a carbon material-supported ruthenium metal catalyst containing a barium auxiliary agent and relates to a preparation method of a catalyst taking a carbon material as a carrier, ruthenium metal as an active component and barium as an auxiliary agent. The preparation method particularly comprises the following steps: firstly, impregnating a ruthenium metal loaded carbon material into a barium nitrate water solution and carrying out reduction treatment under a certain temperature; treating the sample at a certain temperature range under the condition that carbon-containing gas exists; finally, reducing in a hydrogen atmosphere or nitrogen-hydrogen mixed gas to obtain the carbon material-supported ruthenium catalyst containing the barium auxiliary agent. Compared with the carbon material-supported ruthenium metal catalyst containing the barium auxiliary agent, which is prepared by an existing method, the catalyst provided by the invention has relatively high ammonia synthesis activity and heat stability and a relatively good application prospect.

There is provided a fluorine-containing diamine represented by formula (1).

In this formula, R¹ represents a condensed polycyclic type aromatic hydrocarbon group, and at least one —C(CF₃)₂OH group and at least one —NH₂ group are in a relation such that they are attached to adjacent carbons of carbon atoms constituting the condensed polycyclic type aromatic hydrocarbon group. Polymer compounds derived from this fluorine-containing diamine have superior low dielectric property and low water-absorbing property, and, in addition to that, shows low thermal expansion property and high glass transition temperature.

Disclosed is an Al alloy film for use in a display device, which does not undergo the formation of hillocks even when exposed to high temperatures of about 450° C. to 600° C., and has excellent high-temperature heat resistance, low electrical resistance (wiring resistance) and excellent corrosion resistance under alkaline environments. Specifically disclosed is an Al alloy film for use in a display device, which comprises at least one element selected from a group X consisting of Ta, Nb, Re, Zr, W, Mo, V, Hf and Ti and at least one rare earth element, and which meets the following requirement (1) when heated at 450° C. to 600° C. (1) Precipitates each having an equivalent circle diameter of 20 nm or more are present at a density of 500,000 particles/mm² or more in a first precipitation product containing at least one element selected from Al and the elements included in the group X and at least one rare earth element.

The invention relates to a newcastle disease virus heat-resistant attenuated strain adapted to baby hamster kidney passage cells and a preparation method and an application thereof, and the microbial preservation number is CCTCC No.V201113; the classification term is newcastle disease virus TS09-C strain; the preservation time is May 9th, 2011; the preservation unit is China center for type culture collection; the preservation address is Wuhan university, Wuhan, China; the strain has the following advantages: 1. the strain is fully adapted to BHK21 cells, and has a proliferation titer of up to 108.0TCID50/ml; 2. the strain has good heat resistance, and the HA titer does not decrease obviously after the strain is treated at 56 degree for 1 hour; 3. the strain has an attenuated characteristic, has chicken embryo average lethal time of more than 90 hours, and an intracerebral pathogenicity index of 0.00; 4. a newcastle disease heat-resistant live vaccine (passage cell source) prepared by the attenuated strain has the advantages of heat resistance, long storage life, good protective efficacy, prevention of chicken embryos for laying from carrying heterogenous virus, and the like.