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.

A reparing material for reparing the coke oven by spraying the semi-dried it is prepared from the raw Al-Si material chosen from mullite, high-Al alumine, etc. high-Al cement or calcium aluminate cement, soft clay, kyanite, Al2O3 and/or SiO2 powder, and naphthalenesulfonic acid-formaldehyde condensate. Its advantages are high adhesion, strength, heat shock resistance and antiwear performance, and low cost.

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.

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.

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 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 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 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.

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.