62results about How to "Wettability" patented technology

A plurality of quadrilateral-shaped semiconductor elements are stacked on the one surface of a circuit substrate. A side surface wiring for making electrical connection between each of the electrode terminals of the semiconductor elements and a pad formed on the circuit substrate is formed by applying a conductive paste containing conductive particles. A metal wire whose one end is connected to the electrode terminal is extended along a tapered surface formed by cutting off an edge of the electrode terminal surface on which the electrode terminal is formed among edges formed along each of the sides of the semiconductor element. At least a part of the metal wire extended from each of the electrode terminals of the semiconductor elements to the tapered surface is electrically connected to the side surface wiring.

A porous sintered metal comprising voids at least partially communicating with each other, and pores provided in walls of the voids, the porous sintered metal having a BET surface area of 700 cm<2> / cm<3 >or more, and an average diameter of the pores being 1 mum or more when measured by a mercury press-in method. The porous sintered metal is produced by blending a metal powder, a binder and resin particles to prepare a mixture in which the resin particles are dispersed; molding the mixture to provide a green body; selectively extracting the resin particles from the green body with a solvent; debinding the extracted green body by heating; and sintering the debound green body.

In the application of plasma spraying to a metal body, it is intended to attain reduction of spraying cost and improvement of working efficiency in roughening operation while maintaining anticorrosive effects. An adhesion strength of spray coating comparable to that obtained in the conventional combination of blast treatment and gas flame spraying can be realized even if roughening is conducted with the use of simple tools by performing in advance such a roughening treatment that the average roughness (Ra) of surface of thermal spray subject falls within the range of 2 to 10 μm with the use of a grinding tool and thereafter carrying out thermal spraying under such conditions that the average area of each of molten particles when molten particles of a thermal spray material have stuck to the surface of thermal spray subject falls within the range of 10000 to 100000 μm2. In the roughening by means of grinding tools, large-scale apparatus is not needed as different from the blast treatment, and portable small tools can be used in overhead location work at field repair. The scattering of powder resulting from grinding is slight so that the danger of environmental pollution is low.

A thermally conductive composition is made to contain a cured thermosetting resin containing a crystalline epoxy resin component, and an inorganic filler. The content by percentage of the inorganic filler in the thermally conductive composition is 66% or more and 90% or less by volume. This thermally conductive composition has a main portion made mainly of the inorganic filler, and a surface layer portion made mainly of the crystalline epoxy component and formed on the main portion to be continuous to the main portion.

The invention relates to a process for consolidating and hydrophobicizing soil materials of clay type or of siliceous type, using alkali metal silicates and alkali metal siliconates.

A honeycomb structure includes a honeycomb structure body having a partition wall which is constituted of a porous body. The porous body includes a refractory aggregate and a bonding material. The porous body constituting includes the bonding material at a mass proportion of 20 to 35 mass %. In an observation of a cross section of the partition wall with an electron microscope, when observing any given ten visual fields meeting a following condition (1), the number of refractory aggregates meeting a following condition (2) is five pieces or more in all of the ten visual fields.Condition (1): a proportion of an area occupied by the bonding material is 30% or more.Condition (2): the refractory aggregate has a particle diameter of 5 μm or more, and 60% or more of an outer circumference of the refractory aggregate is surrounded by the bonding material.

A flux for hot dip galvanization comprises from 60 to 80 wt % of zinc chloride (ZnCl2); 7 to 20 wt % of ammonium chloride (NH4Cl); 2 to 20 wt % of a fluidity modifying agent comprising at least one alkali or alkaline earth metal; 0.1 to 5 wt % of at least one of the following compounds: NiCl2, CoCl2, MnCl2 and 0.1 to 1.5 wt % of at least one of the following compounds: PbCl2, SnCl2, BiCl3 and SbCl3.

The purpose of the present invention is to improve releasability from the jig of a method of producing a minute metal ball by heating and melting and then cooling a metal piece of specific dimensions and further, to present a metal ball with very good dimensional accuracy and sphericity, even though diameter is minute. By means of the above-mentioned method, very good releasability between the metal ball and jig after melting and cooling is obtained and long-term use of the tool becomes possible by placing a metal piece on a jig with a layer of fine powder of BN, AlN or C having low wettability with the metal piece in between, or by making a layer of fine powder adhere to the surface of the metal piece and then placing this metal piece on the jig or shaking and arranging individual metal pieces in holes in the same. Moreover, the layer of fine powder on the jig or the surface of the metal piece used in the method of the present invention does not prevent spheroidising of the metal piece under surface tension during melting, and there is no deterioration of surface properties of the metal ball that is obtained and it is thereby possible to markedly improve dimensional accuracy and sphericity of the metal ball.

The problem of the present invention is to provide an etching solution composition that can etch with high accuracy a metal-laminated film pattern comprising thin films of copper and a copper alloy, can form an excellent pattern shape, and has practically excellent and stable characteristics with long solution life, and to provide an etching method using such etching solution composition. The present invention relates to an etching method for etching a metal-laminated film having a layer consisting of copper and a layer consisting of a copper alloy containing copper, using an etching solution composition comprising phosphoric acid, nitric acid, acetic acid and water, as well as to said etching solution composition.

The invention discloses a low-foam dispersant, a preparation method and an application thereof and belongs to the technical field of high-molecular compound synthesis. The dispersant is a polymer, the weight-average molecular weight of which is 5000-35000, copolymerized by monomers A, B and C, wherein the monomer A is polyether-modified silicone oil maleate. The preparation method comprises the following steps: (1) adding the monomers A and B, lauryl sodium sulfate and water, and stirring and heating the mixture; (2) dropwise adding the monomer C and an initiator; and (3) after reaction, reducing the temperature and adjusting the pH to 4-8. The low-foam dispersant disclosed by the invention can reduce foam of a system, and is convenient to produce and use; the low-foam dispersant can reduce the surface tension of a water system, so that the system has relatively low surface tension, and is good in wetting property; the dispersibility is improved, and the system is more stable; the dispersant is uniformly dispersed; and the low-foam dispersant can be applied to preparations such as pesticide wettable powder, a suspending agent and water dispersible granules.

The invention discloses novel low-melting-point lead-free solder. The chemical material of the novel low-melting-point lead-free solder comprises, by mass, 0.3-3.5% of Ag, 0.3-.7% of Cu, 0.8-6.0% of Bi, 0.1-0.6% of Ni, 0.01-0.15% of rare earth metal, and the balance Sn. The novel low-melting-point lead-free solder is low in cost and has wet property, welding spot reliability, spreading property and heat shock resistance and other excellent performance. Above all, the novel low-melting-point lead-free solder is low in melting point, the difficulty of reflow soldering can be reduced, the novel low-melting-point lead-free solder is particularly suitable for the development tendency of light, thin, short and minimized electronic products currently, and energy conservation, emission reduction and energy consumption reduction are facilitated.

A corrosion inhibitor comprises compositions of, by weight part ratio, 10-15 parts of sodium silicate, 5-10 parts of multivariate copolymerization sodium polyacrylate, 2-5 parts of hydroxyl ethidene diphosphonic acid, 4-9 parts of mercaptobenzothiazole, 15-20 parts of benzotriazole, 15-25 parts of sodium tripolyphosphate, 5-15 parts of ethanol, 15-20 parts of hexamethylene tetramine, 4-9 parts of imidazoline, 11-18 parts of mercaptobenzothiazole, 2-7 parts of alkyl alkamine and 3-8 parts of furfural. The corrosion inhibitor is strong in water absorbing quality and pollution-free, has wetting ability, and can reduce the freezing point of water.

A graft polymer according to the invention contains a backbone of one or more substantially random interpolymers, comprising: (1) polymer units derived from: (a) at least one vinyl or vinylidene aromatic monomer, or (b) at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, or (c) a combination of at least one aromatic vinyl or vinylidene monomer and at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, and (2) polymer units derived from at least one of ethylene and / or a C3-20 alpha-olefin; and (3) optionally polymer units derived from one or more of ethylenically unsaturated polymerizable monomers other than those derived from (1) and (2); said backbone being grafted with one or more olefinically unsaturated organic monomer(s). In a preferred embodiment such graft polymers were prepared using a reactive extrusion process.

After plural semiconductor elements are stacked to form a stacked body P, side wirings are formed on the side surface of the stacked body P, thereby manufacturing a semiconductor apparatus in which the respective semiconductor elements are electrically connected to one another. In this case, as the semiconductor element, a semiconductor element 10 is employed in which a gold wire 16 with its one end connected to an electrode terminal of the semiconductor element is extended out to the side surface. A conductive paste 36 containing conductive particles applied over a predetermined length of a transferring wire 30 is transferred to the side surface of the stacked body P so that the gold wires 16 extended out to the side surfaces of the semiconductor elements 10, 10, 10 are connected, thereby forming the side wirings.

The invention discloses a preparation method of a zinc oxide nanowire modified nanofiber filtering membrane, and belongs to the field of textile materials. The specific preparation method comprises the steps of dissolving thermal decomposition zinc salt, antibacterial metal salt and a high polymer in an organic solvent, and obtaining a spinning solution; preparing a nanofiber membrane from a spinning solution obtained by solution jet spinning; then drying the nanofiber membrane at a high temperature lower than the viscous flow temperature of a high polymer to obtain a nanofiber membrane loaded with zinc oxide seed crystals; and dissolving thermal decomposition zinc salt and alicyclic amine substances in water to obtain a growth solution, regulating and controlling the pH value, then immersing the obtained nanofiber membrane loaded with the zinc oxide crystal seeds in the growth solution, conducting heating, and obtaining the zinc oxide nanowire modified nanofiber filtering membrane. The zinc oxide nanowire modified nanofiber filter membrane prepared by the method has super-hydrophilic / underwater oleophobic wettability, has stable high temperature resistance and alkali resistance, can resist microbial pollution, and can be used in the fields of oil-water separation, catalysis, industrial waste gas filtration and desulfurization and the like.

The invention discloses biomass environment-friendly water-based color paste and a preparation method thereof, and aims to solve the problems of single function, poor storage stability and low color keeping degree in the conventional water-based color paste. The preparation method of the biomass environment-friendly water-based color paste comprises the following steps: dispersing an inorganic or metal pigment, a composite modified starch emulsion, a dispersing agent, a biomass stabilizer, a moistening agent, aluminum starch dodecenyl succinate and a pH adjusting agent for a certain period of time, and grinding the mixture; and adding an antifoaming agent, stirring the mixture uniformly at a low speed, filtering the mixture, and packaging the filtered mixture to obtain a biomass water-based color paste product. The product prepared by using the preparation method can be applied to coating, printing and advertising ink jet, and has the characteristics of environmental friendliness, stability, high color retention and the like.

The invention discloses an oil-based drilling fluid without a surfactant used as an emulsifier, which is prepared from the following components according to a proportion: a nano material accounting for 1-5% of the total weight of the oil-based drilling fluid, and the balance of an oil phase and a water phase, wherein the weight ratio of the oil phase to the water phase is 75:25-90:10. The oil-based drilling fluid without the surfactant used as the emulsifier has the characteristics of high temperature resistance and salt resistance, facilitates the stability of a well body, is good in lubricating property and low in degree of damage to an oil-gas layer, has the less toxic effect on a human body as compared with the surfactant, and relieves harm to field operators caused by an oil-based drilling fluid emulsifier.

The invention discloses a fabrication method of a novel micropore carbon-coating aluminum foil. The fabrication method comprises the following steps of S1, fabricating a micropore aluminum foil; S2, performing thermal treatment on the micropore aluminum foil; S3, preparing a conductive carbon water-based material; S4, coating the micropore aluminum foil; and S5, drying, cleaning and winding to form a finished product. The employed carbon material is a compound in carbon black, a graphite flake or graphene has relatively good processing performance and conductivity; by adding the graphene intoa coating layer, the conductive capability is improved, and the scratching resistance and the flexibility are improved; and with the application of acrylic acid, polyurethane, epoxy resin, polyester and alkyd resin film formation agent, the film formation performance of the carbon coating material on a surface of the aluminum foil is improved; and by application of the film formation agent and thecorresponding additive NNO in a matching way, the novel micropore carbon-coating aluminum foil has certain wettability and has favorable wet effect.

The present invention relates to a dental curable composition that can be suitably used as a dental material that can substitute part or all of a natural tooth, in particular, a resin material for dental cutting and machining in the field of dental care. An object of the present invention is to provide a dental curable composition in which, when a block shape usable as a resin material for dental cutting and machining is produced while mechanical properties such as hardness, bending strength and compressive strength as well as aesthetic property required for a crown prosthetic appliance are maintained, the dental curable composition can be molded and processed with pressure and heating while strain generated in the block is reduced and no cracks and chipping occur. There is provided a dental curable composition including (a) a polymerizable monomer and (b) a filler in a weight ratio of 10:90 to 70:30, and including 0.01 to 10 parts by weight of (c) a polymerization initiator and 0.001 to 1 part by weight of (d) a chain transfer agent being a terpenoid compound based on 100 parts by weight of the polymerizable monomer (a).

The present invention is a flux for soldering, which contains a base resin and an activator. The base resin contains a thermoplastic acrylic resin that is obtained by polymerizing a monomer component that contains a long-chain alkyl (meth) acrylate. The long-chain alkyl moiety of the long-chain alkyl (meth) acrylate has a branched structure having 12-23 carbon atoms, and the acrylic resin has a weight average molecular weight of 30,000 or less. A solder paste composition of the present invention has improved printability for fine portions without adhering to a squeegee when printed, while having wettability, storage stability and crack resistance in residue portions.

The invention provides an ohmic electrode of a p-type SiC semiconductor element, which includes an ohmic electrode layer that is made of Ti3SiC2, and that is formed directly on a surface of a p-type SiC semiconductor. The invention also provides a method of forming an ohmic electrode of a p-type SiC semiconductor element. The ohmic electrode includes an ohmic electrode layer that is made of Ti3SiC2, and that is formed directly on a surface of a p-type SiC semiconductor. The method includes forming a ternary mixed film that includes Ti, Si, and C in a manner such that an atomic composition ratio, Ti:Si:C is 3:1:2, on a surface of a p-type SiC semiconductor to produce a laminated film; and annealing the produced laminated film under vacuum or under an inert gas atmosphere.

A corrosion inhibitor comprises compositions of, by weight part ratio, 10-15 parts of sodium silicate, 5-10 parts of multivariate copolymerization sodium polyacrylate, 2-5 parts of hydroxyl ethidene diphosphonic acid, 4-9 parts of mercaptobenzothiazole, 15-20 parts of benzotriazole, 15-25 parts of sodium tripolyphosphate, 5-15 parts of ethanol, 15-20 parts of hexamethylene tetramine, 4-9 parts of imidazoline, 11-18 parts of mercaptobenzothiazole, 2-7 parts of alkyl alkamine and 3-8 parts of furfural. The corrosion inhibitor is strong in water absorbing quality and pollution-free, has wetting ability, and can reduce the freezing point of water.

The invention relates to a method for preparing a glass solder for ceramic-stainless steel sealing, which is characterized in that the method comprises the steps: (1) crushing ordinary window glass; (2) performing wet milling according to the weight ratio that ordinary window glass: grinding balls: water is equal to 1: 2: 1 to form glass powder with an average grain diameter of between 3 and 5mu m in a planetary ball mill; and (3) performing drying in an electrothermal constant-temperature blowing dry box at a temperature of 120 DEG C. The glass solder can be melted at a temperature below 900 DEG C to guarantee the precise dimension of a stainless steel part and to reduce the energy consumption of the sealing as much as possible; on the other hand, the glass solder has wettability to a ceramic piece and the stainless steel part, thus the melt of the glass solder is easier to flow into gaps of various components, forms a compact glass layer at an appropriate cooling rate, and firmly seals two materials with different properties, namely ceramic and metal together.

The invention belongs to the field of cosmetics and provides a skin care composition as well as a preparation method and an application thereof. The composition comprises components in terms of weight100% of the composition as follows: 0.001%-20% (w / w) of pyruvic acid and pyruvate, 0.001%-15% (w / w) of aminolaevulinic acid and derivatives thereof and 65%-90% (w / w) of a moisturizer. The compositionhas greatly improved oxidation resistance, has injury repair capacity and can effectively improve the water shortage state of skin.

The invention provides plant extract nutrient bath cream comprising the following raw materials in percentage by weight: 1-5% of wormwood extract and 0.4-10% of fat agent, wherein the fat agent is at least one of glyceryl oleate, dodecyl lactate, tridecanyl lactate, olive oil PEG-7 ester and PEG-7 glyceryl cocoate. The invention also provides a preparation method of the plant extract nutrient bath cream. The bath cream provided by the invention adopts the wormwood extract has the effect of sterilizing and relieving itching and the fat agent capable of effectively maintaining water balance of human skin as the raw materials, so that the effects of sterilizing, relieving itching and nourishing skin are provided while the requirement of cleaning the skin is met, the materials such as a non-irritant preservative substituent, a skin conditioner providing skin nutrition and a mild and high foaming surfactant are cooperated to use, and thus the effects of deeply cleaning the skin, nourishing the skin and maintaining the skin smooth and soft are achieved.

The invention discloses an improved biodegradable porous scaffold particle for injection and a preparation method thereof. The improved biodegradable porous scaffold particle mainly comprises biodegradable polymers. The preparation method comprises the following steps: dissolving the biodegradable polymers in organic solution; mixing with water and stirring to form softened solution; freezing, drying and foaming the softened solution at the specific temperature to form foaming substances; further crushing the foaming substances by a crusher; mixing the crushed foaming substances with softenersolution; and freezing, drying and sterilizing. The invention has the following beneficial effects: the adopted raw material per se is not harmful to human body, while the endothelial cells and skin tissues of the human body can be easily attached to the raw material, thus providing the good growing environment for the cells and favoring for the growth of the cells; and the porous biodegradable scaffold particle can be naturally decomposed and absorbed in vivo within a certain period of time, thus avoiding the risks of in-vivo accumulation.

The invention discloses a multi-element water soluble liquid fertilizer, which is characterized by being prepared from the following raw materials in parts by weight: 10-32.0 parts of urea, 7.6-19.9 parts of phosphoric acid, 1.0-1.2 parts of boric acid, 0.4-1.3 parts of sodium molybdate, 40.0-55.0 parts of dipotassium phosphate, 6.4-9.3 parts of fulvic acid and 0.1-0.2 part of wood vinegar. The preparation method adopts the urea, the phosphoric acid and the dipotassium phosphate as main raw materials; in the prepared multi-element water soluble liquid fertilizer, P2O5 is more than or equal to K2O in amount; the boric acid and the sodium molybdate are taken as trace elements, and the soluble fulvic acid serves as a chelating agent; moreover, by adding the wood vinegar to a hydrosolvent, water molecule hydrogen bonds are cut off to form a cluster of 5 water molecules, thus greatly enhancing solubility and permeability of the hydrosolvent, and the fertilizer can be used as such multifunctional additives as a wetting agent. Besides advantages of a common multi-element water soluble liquid fertilizer, the fertilizer can also meet a demand of planting rice on improved saline land. Such soluble nutrients as N, P, K<+>, Mg<2+> and Ca<2+> can be provided to meet a demand of rice growth, so that growth of rice on the saline land is vigorous.

The invention discloses a macro-element solid water-soluble fertilizer and a preparation method thereof. The macro-element solid water-soluble fertilizer is prepared from, in weight percent, 25%-35% of urea, 10%-15% of potassium nitrate, 10%-18% of ammonium polyphosphate, 10%-20% of dipotassium phosphate, 2%-4% of boric acid, 1%-3% of magnesium sulfate, 1%-3% of zinc sulfate, 0.5%-2% of copper sulfate, 0.5%-2% of manganese sulfate, 5%-10% of amino acid powder, 4%-8% of dispersants and 1%-3% of cosolvents. Polystyrene-maleic anhydride grafted methoxy polyethylene glycol copolymer is used as thedispersants used with lignosulfonate, alkyl naphthalene sulfonated formaldehyde condensates and the polystyrene phenol phosphate cosolvents, inter-particle steric hindrance is enlarged, fertilizer particles are easily directionally arranged in water and gain good dispersibility and wettability in the water, and caking of the fertilizer during storage can be effectively prevented. The macro-element solid water-soluble fertilizer is simple to produce, low in cost, environmentally friendly, free of pollution and applicable to large-scale production and has market application values.