170results about How to "Low melting point" patented technology

Novel compounds of 2,3-dimethyl-2-isopropylbutyric acid were claimed in this patent to possess pronounced cooling effect on the skin and on the mucous membranes of the body. These compounds also possess good taste quality and low melting points with no malodor. The preparations and some illustrative application of these compounds are also disclosed.

A composition for the manufacture of a porous, compressible article, the composition comprising a combination of: a plurality of reinforcing fibers; a plurality of polysulfone fibers; and a plurality of polymeric binder fibers; wherein the polymeric binder fibers have a melting point lower than the polysulfone fibers; methods for forming the porous, compressible article; and articles containing the porous, compressible article. An article comprising a thermoformed dual matrix composite is also disclosed, wherein the composite exhibits a time to peak release, as measured by FAR 25.853 (OSU test), a 2 minute total heat release, as measured by FAR 25.853 (OSU test), and an NBS optical smoke density of less than 200 at 4 minutes, determined in accordance with ASTM E-662 (FAR/JAR 25.853).

The present invention is one kind of copolyester capable of being deeply dyed with cationic dye at normal pressure and its preparation process. The copolyester may be blended with common PET to obtain fiber capable of being deeply dyed with cationic dye at normal pressure. The copolyester has main repeated units of glycol phthalate and has acid components including polybasic carboxylic acid in 5-10 wt%, sulfo isophthalate in 5-18 wt% and polyalkylene diol or alphatic binary acid or its derivative in 4-10 wt%. The copolyester is prepared through semi-continuous process, including continuous esterification and intermittent polymerization. The copolyester is one kind of modified cationic dyeable polyester and may be blended into composite fiber with improved air permeation, hydroscopicity and dyeing property and suitable for various kinds of fabric.

An interconnected arrangement of photovoltaic cells is achieved using novel interconnection components. The interconnection component may comprise a current collector structure, an interconnection structure, or a combination of a current collector and interconnection structure.

The invention provides a process for producing nonpassivated silicon, which process comprises providing a sample of silicon and, under inert conditions, reducing the mean particle size in the sample by applying a mechanical force to the sample. The invention also provides nonpassivated silicon which is obtainable by such a process, and compositions which comprise the nonpassivated silicon. Further provided is a process for producing hydrogen, which process comprises contacting water with nonpassivated silicon, thereby producing hydrogen by hydrolysis of said silicon. The invention also provides a pellet for generating hydrogen, the pellet comprising nonpassivated silicon encapsulated within an organic coating.

The present invention relates to water-dispersible urea terminated ether type polyurethanes based on polyether diols, aqueous dispersions of such polyurethanes, and their manufacture. The urea termination can have nonionic hydrophilic substituents.

The invention belongs to metal continuous casting, in particular relates to protecting slag used for pouring medium carbon steel in a shaped blank continuous casting crystallizer. The protecting slag of the invention has the following compositions, based on weight percent: CaO of 31-37%, SiO2 of 30-37%, Al2O3 of 4.5-10.5%, F- of 2.5-6.5%, R2O(Na2O+K2O) of 2.5-8.5%, and fixation C of 4-7%. Physical property of the protecting slag is in the melting point of 1100-1170 DEG C. and viscosity (1300 DEG C.) of 0.3-0.5Pa.s. The advantages of the invention are of: good physical property of the protecting slag, e.g. low melting point and low viscosity; fine lubrication and filling performance of the protecting slag to satisfy process requirements for continuously casting the shaped blank; reducing surface longitudinal crack of the casting blank greatly, increasing surface quality of the shaped blank, remarkably reducing rejection ratio, with low cost, thus the invention can substitute for imported protecting slag.

The invention discloses a method for preparing a compact ultrafine-grain boron carbide ceramic material with a reduced sintering temperature. The method comprises the following steps: selecting coarse boron carbide powder with an average particle size of less than 20 [mu]m and carrying out ball milling and settlement so as to obtain ultrafine boron carbide powder with a particle size of less than 1 [mu]m; mixing the ultrafine boron carbide powder with MnNiCoCrFeX high-entropy alloy powder and carrying out ball milling so as to obtain B4C-MnNiCoCrFeX mixed powder; and subjecting the mixed powder to pressure sintering so as to obtain the compact ultrafine-grain boron carbide ceramic material with a reduced sintering temperature. According to the invention, the MnNiCoCrFeX high-entropy alloy powder is added into a boron carbide matrix, so a liquid phase is formed during high-temperature sintering and can fill in pores, and thus, the sintering densification temperature of the boron carbide ceramic material is effectively reduced, and energy consumption is decreased; and a boron carbide product with a density of greater than 99% is obtained after a temperature of 1900 DEG C is maintained for 5 min, and compared with the prior art, sintering temperature is reduced by 200 DEG C and heat preservation time is substantially shortened.

PCT The present invention relates to a supramolecular polymer comprising 1-50 4H-units, said supramolecular polymer being obtainable by reacting at least one monomeric building block with a prepolymer. The present invention further relates to articles or compositions comprising the supramolecular polymer, in particular articles or compositions selected from the group consisting of decorative, thermo-reversible, or self-healing coatings, adhesive compositions, sealing compositions, thickeners, gelators and binders.

A multi-element low-Ag Cu-base alloy solder for metals, Cu alloy, stainless steel and high-strength steel contains Mn (10-25 wt.%), Ni (5-20), Ag (2-10), Si (0.1-2), B (0.05-1) and Cu (rest). Its advantages are high welding strength and low cost.

In an LED (Light Emitting Diode) including a cover covering an LED element, the cover is formed using glass having a composition R_nSiO_2−n/2. The glass according to the present invention is low melting point glass with a softening temperature of −40° C. to 300° C., melts at lower temperatures compared to conventional glass, and can safely form the cover without damaging the LED element. Since glass has better moisture shield performance and resistance to light compared to epoxy resins, the cover is formed using glass, and consequently deterioration of the LED element and a phosphor caused by moisture is reduced, deterioration of the cover caused by light is reduced, and changes in color and luminous intensity are restrained.

The invention discloses a method for separating cynomorium songaricum polysaccharides through deep-eutectic solvent/salt two-aqueous-phase extraction. The method comprises the following main steps: adding a deep-eutectic solvent with a certain moisture content into cynomorium songaricum powder, fully leaching at room temperature, performing ultrasonic pulse treatment under ice-bath conditions, andcentrifuging to collect the supernatant so as to obtain a crude cynomorium songaricum polysaccharide extract; adding dipotassium phosphate into the crude cynomorium songaricum polysaccharide extract,mixing, dissolving, standing and centrifuging to form a two-aqueous-phase extraction system, wherein the upper phase is the deep-eutectic solvent, and the lower phase is a solution containing sugar and dipotassium phosphate; performing freeze drying recovery on the upper phase; and dialyzing the lower phase, and performing freeze drying, thereby obtaining the cynomorium songaricum polysaccharide.The deep-eutectic solvent adopted in the invention has the advantages of being non-toxic, excellent in biodegradability and biocompatibility and low in melting point, the extraction, separation and purification operations are simple, the conditions are mild, the separation efficiency is high, the yield of the cynomorium songaricum polysaccharide is high, the deep-eutectic solvent can be recycled,the production cost is effectively reduced, and the method is suitable for large-scale industrial production.

This invention provides one reverse welding structure with low melt point and its process method, which is the one improved on General pure gold protruding point's process method, wherein, the points and weld panel adopt Ti/Au structure with one evaporated layer of Au/Sn alloy or other alloy layer with low melt point. The invention method avoids the direct friction as protective parts. In welding the points, it adopts thermal pressure welding and ultrasonic welding binding to improve welding intensity.

The present invention provides a resin additive masterbatch which not only is capable of containing a resin additive having a low melting point at a high concentration, but also can be continuously produced without strand breakage and has an improved surface tackiness.

The resin additive masterbatch comprises, with respect to 100 parts by mass of (A) a crystalline resin, 100 to 900 parts by mass of (B) a resin additive, 0.1 to 10 parts by mass of (C) a metal salt of an organic acid other than fatty acid and 0.1 to 10 parts by mass of (D) a gelling agent,

• • the resin additive masterbatch being characterized in that the above-described (B) resin additive retains a liquid state when melted with heating to 250° C. and then cooled to 80° C. and kept for 30 minutes.

Dissipated metal indium chloride/chlorination 1- methyl-3-butyl-imidazole system plating liquid (g.kg<-1>) is formed by the following materials: 80 to 100 portions of the metal indium (In), 230 to 430 portions of anhydrous InCl3, 180 to 360 portions of the chlorination 1- methyl-3-butyl-imidazole (MBIC), 200 to 300 portions of glycol, 1 to 3 portions of isinglass, 20 to 40 portions of dextrine as well as 30 to 50 portions of sodium chloride(NaCl). Ion liquid is a novel green solvent and the indium-plated liquid researched by utilizing the room temperature ion liquid of the dissipated metal has a plurality of specific properties like lower melting point, adjustable Lewis acidity, excellent conductive property, negligible steam pressure, wider using temperature, special solubility, etc. the indium-plated liquor does not have the problems of hydrating, hydrolyzing and hydrogen evolution and has the properties of no corrosion and low pollution that should be prepared by a green solvent. The fine indium quality is improved to a large extent and the purity of the indium can reach 99.99 percent by using the plating liquid to plate indium.

The invention discloses a high-reliability low-temperature lead-free solder paste and a preparation method thereof. The high-reliability low-temperature lead-free solder paste is prepared by mixing solder powder and flux according to a weight ratio of 88.5-90.0:10-11.5. The solder powder is composed of, by weight, 48-56% of Sn, 1.0-1.4% of Ag, 0.1-0.15% of rare earth Ge/Nd and the balance In. In the selected raw materials, solder powder alloy is low in melting point, excellent in mechanical property and thermal fatigue resistance and capable of meeting high reliability in use of the solder paste in a low-temperature environment; the flux is low in boiling point and capable of meeting the requirement that other components of the flux are dissolved by a solvent in a soldering process, and the flux is basically volatilized to reduce after-soldering residues after soldering is finished; an active agent with a low melting point can guarantee greatest functions in the soldering process to realize removal of an oxide film of a substrate, reduction of surface tension of soldering flux and promotion of moistening of the solder paste and the substrate; a thixotropic agent can guarantee freeness of sedimentation and layering in a solder paste storage process and continuity and smoothness in a printing process.

The invention provides a method for mixed-loading blast furnace materials, ironstone and coke are loaded into the furnace hierarchically, characterized in that the ironstone loaded into the furnace is ore having two or more than two different alkalinity, and the ore is mixed according to the matching proportion of furnace alkalinity requirement prior to entering into the blast furnace. The invention solves the problem that each material layer in the original blast furnace owes the diverse formed softening, fusing, falling starting temperatures to diverse alkalinities, causing the bad air and liquid permeability of material post at the lower part of the blast furnace so as to have an influence on the stable operation of the blast furnace. The invention has the characteristics of reducing the alkalinities of initial slag and bosh slag of the high alkalinity sinter, dropping the melting point of the initial slag, promoting the fluidities of the initial slag and the bosh slag, thus improving the air and liquid permeability of material post at the lower part of the blast furnace and creating advantageous conditions for further increased production and coke saving.

The invention discloses a preparation method of low-melting-point copolyamide hot melt adhesive. The preparation method includes that aliphatic dicarboxylic acid with 3-8 carbon number, aliphatic diamine with 3-8 carbon number, caprolactam, water and catalyst are added in a reaction kettle, simultaneously high-boiling-point monoamine is added to serve as a molecular weight regulator, the temperature rises to 170-250 DEG C under the protection of nitrogen, and finally the copolyamide hot melt adhesive is obtained through condensation reaction. The melting point of the obtained hot melt adhesive is below 115 DEG C and is particularly suitable for adhesion of heat-sensitive fiber fabric or leather fabric.

A method of brazing different types of metals by a low melting point brazing material is provided. First, a surface of a first metal member is covered by a material enabling brazing with a second metal member along with diffusion of a brazing material. Next, a low melting point brazing material is arranged at the covered surface. Further, the low melting point brazing material is made to melt.

The invention discloses a method for preparing fused salt electrolyte, belonging to the technical field of the electrolyte material and a preparation method thereof. The aims of reducing the melting point, increasing the conductivity and improving the stability are fulfilled by adjusting the weight percentage of components. The whole experimental process is performed in a dry environment with RH less than and equal to 2 percent. The raw materials in weight percentage are 15 to 20 of LiCl, 15 to 20 of KCl, 30 to 35 of LiBr and 25 to 40 of KBr. The raw materials are dried in vacuum, dehydrated, cooled, weighed according to the weight percentage and ground evenly. The mixed evenly raw materials are heated to increase the temperature slowly in a high temperature furnace so as to melt completely and keep the temperature, the mixture is cooled to the room temperature together with the furnace, and the obtained fused salt is crushed and ground mechanically to obtain the fused salt electrolyte. The prepared fused salt electrolyte has the characteristics of low melting point, high conductivity and good thermal stability.

The object of the present invention is to provide a non-aqueous electrolyte secondary cell that excels in safety against overcharging and shows only a small increase in thickness during continuous charge. This object can be achieved by adopting the following configuration: a separator is used that is made of a microporous polyolefin membrane having an average pore diameter of 0.07 to 0.09 μm; a non-aqueous electrolyte contains 0.5 to 3.0 mass % of 1,3-dioxane, 0.05 to 0.3 mass % of adiponitrile, and 0.5 to 3.0 mass % of cyclohexylbenzene and/or tert-amylbenzene relative to the mass of the non-aqueous electrolyte; and preferably the non-aqueous electrolyte further contains 0.5 to 5.0 mass % of a vinylene carbonate and 0.1 to 2.0 mass % of 2-propyn-1-yl 2-(methylsulfonyloxy) propionate.

The invention relates to the technical field of lithium ion batteries, and particularly relates to a lithium battery for inhibiting growth of lithium dendrites by utilizing liquid metal as well as a preparation method and application thereof. The method comprises the steps of coating a gallium-based liquid metal layer on a current collector, taking the current collector as a positive electrode, and assembling the current collector and components required by the lithium battery into a liquid battery in an inert atmosphere so as to obtain the lithium battery. According to the invention, the lithium affinity of the current collector is improved by using the low-temperature gallium-based liquid metal coating, the initial nucleation potential barrier of lithium is reduced, the growth of lithiumdendrites is finally eliminated, uniform metal lithium deposition is realized, the coulombic efficiency of the battery is remarkably improved, the SEI film is stabilized, the cycle life of the battery is prolonged, and the occurrence of safety problems induced by the lithium dendrites are reduced. According to the method, the preparation of the current collector can be completed through the simple liquid metal coating, and the large-scale production is greatly facilitated.

the invention discloses a vacuum refiner in the RH vacuum refining furnace, which comprises the following parts: 32-45% CaO, 25-36% Al2O3, 15-25% Al, 0-8% CaF, 0-8% SiO2, 0-0.18% C and impurity. the invention satisfies environmental-protective request, which improves recycling and desulfurizing effect of Al.

An object of the present invention is to provide a method for manufacturing a bared optical fiber having a good end surface of a coating when the coating of the coated optical fiber is removed, and a device for manufacturing the same. To achieve the above object, according to the invention, a laser beam is applied to an coated optical to fuse the coating or work the coating in other manners, if a coating material has a lower melting point as compared with the material of the bared optical fiber to remove the coating, whereby a bared optical fiber is manufactured. In addition, a cyanogen gas generated when the coating of the coated optical fiber is fused or worked in other manners is decomposed by ozone, thereby being made harmless.

The invention discloses a preparation method for a high-strength wear-resistant alloy Cu-15Ni-8Sn. The process comprises the following steps: adding electrolytic copper and nickel; pouring the electrolytic copper and nickel in an intermediate-frequency coreless induction furnace; adding charcoal; charging nitrogen gas with one barometric pressure; melting; melting for 30-65 minutes at 1300-1350 DEG C; adding tin and melting at 1250-1300 DEG C; adding a refiner and a deoxidizer; stirring; adding a grain refiner; adding a modifier; slagging off; carrying out inspection before melting; carrying out electromagnetic casting after ingredients are qualified; cutting a head and a tail; scalping; carrying out ingredient inspection after melting; carrying out organization structure analysis; and carrying out performance detection. A Cu-15Ni-8SnC72900 alloy melt and cast by virtue of the intermediate-frequency coreless induction furnace, which is obtained by the preparation method disclosed by the invention, is low in production cost; and the developed products are high in quality. The developed products can be applied to national defense and military industry, ocean engineering and high-end preparation manufacturing industry; and the increasingly urgent needs of the national defense and military industry, ocean engineering and high-end preparation manufacturing industry on high-performance copper alloy materials are met.

The invention discloses alcohol-soluble copolyamide and a preparation method thereof. The alcohol-soluble copolyamide is characterized by being prepared by charging dicarboxylic acid, diamine, lactam and furan-2,5-dicarboxyic acid wchi are used as raw materials and carrying out fusion polycondensation to obtain the alcohol-soluble copolyamide, wherein the raw materials react in equivalent ratio of carboxyl to amino of 1:1. The novel alcohol-soluble copolyamide obtained by adopting the preparation method contains more than 60wt% of biomass-based raw material, has excellent alcohol solubility and can be applied to the fields of paints and binding agents.

The invention discloses an anisotropic heat conduction material. The anisotropic heat conduction material is a composite material of liquid metal materials and a high-molecular polymer, wherein the high-molecular polymer possesses embedded runners, and the runners are filled with the liquid metal materials. According to the preparation method, the anisotropic heat conduction material is obtained via injecting and sealing room temperature liquid metals, including gallium, indium, mercury, sodium, potassium, caesium, or binary alloys and multicomponent alloys thereof, into the high-molecular polymer; anisotropism of heat conductivity of a composite material prepared via adding high thermal conductivity materials into a base material is increased greatly; and heat energy transmission direction can be controlled artificially based on practical requirements. Preparation is convenient; mixing process and mixing results of the high thermal conductivity additives with the high-molecular polymer can be controlled easily; material heat conductivity anisotropy rate range can be adjusted in a relatively range artificially; and the anisotropic heat conduction material possesses significant importance in the fields of micro-fluidic chips, biological medical testing equipment, cryogenic engineering, and electronic integration equipment.

A soft magnetic core including a soft magnetic material and a low melting point lubricant is manufactured by adding a low melting point lubricant into an insulation-treated soft magnetic material, warm forming the soft magnetic material with the low melting point lubricant added, and performing a thermal treatment on the warm-molded soft magnetic material. The low melting point lubricant has a melting point ranging from 50° C. to 170° C., and includes at least a material selected from the group consisting of zinc oleate, copper stearate, zinc stearate, calcium stearate, and aluminum stearate.

The invention discloses vegetable blend oil for balancing nutrition. According to the technical scheme, the vegetable blend oil is prepared from the following components in parts by weight: 5-40 parts of coconut oil, 5-50 parts of soybean oil, 5-50 parts of rape oil, 5-35 parts of maize germ oil, 5-30 parts of sunflower seed oil, 5-35 parts of wheat germ oil, 5-35 parts of olive oil, 5-30 parts of peanut oil and 5-30 parts of sesame oil. As the vegetable blend oil contains two kinds of fatty acid, namely, linolenic acid and linoleic acid, indispensable to a human body, the vegetable blend oil has certain anti-oxidant and health-care functions; medium chain triglycerides from natural vegetables can be added as coconut oil is added, thus the vegetable blend oil is easily digested and absorbed by the human body, and can rapidly metabolize in the human body to generate energy and is not stored in the human body in the form of fat; natural nutrient vitamin E indispensable to the human body can be supplemented as the wheat germ oil and the maize germ oil are added, and therefore, the vegetable blend oil meets the requirement of the human body on various nutrition ingredients, and the risk of suffering from illness is reduced.

The invention discloses a Ni-Co-Fe-B series eutectic high-entropy alloy and a preparation method thereof. The alloy component of the eutectic high-entropy alloy is NiaCobFecBdMe, M is a trace element, a, b, c, d and e are respectively molar percentages of corresponding elements, a is greater than 15%, b is greater than 15%, c is greater than or equal to 5% and less than or equal to 10%, d is greater than or equal to 10% and less than or equal to 25%, e is greater than or equal to 0%, and a + b + c + d + e = 100. The eutectic high-entropy alloy is prepared by adopting a suspension smelting method. The eutectic high-entropy alloy is of an eutectic lamellar structure, a nonmetal principal element plays an important role in an eutectic system, and the eutectic high-entropy alloy is small in lamellar spacing, strong, good in plasticity matching, excellent in mechanical property, high in fluidity, excellent in casting performance and wide in application prospect in the fields of aerospace, mechanical industry and the like.