201results about How to "Good physical properties" patented technology

Provided are ethylene-based polymer compositions, articles made therefrom, and methods of making the same. Ethylene-based polymer compositions include linear low density polyethylene prepared with metallocene catalyst, which may optionally have about 5 mole percent or less of monomer units derived from an alpha-olefin comonomer. Ethylene-based polymer compositions include blends of linear low density polyethylene and one or more very low density polyethylene compositions, one or more low density polyethylene compositions, one or more medium density polyethylene compositions, one or more high density polyethylene compositions, one or more differentiated polyethylene compositions, or other conventional polymers. Articles composed of such ethylene-based polymer compositions are prepared according to a process window, e.g., at a specific extrusion rates, which provides favorable physical properties, including tear resistance and dart drop properties. Films prepared according to these techniques exhibit physical properties equivalent to, or superior than, conventional linear low density polyethylenes prepared with Ziegler-Natta catalyst.

The invention discloses a method for synthesizing a PdPt/graphene nano electrical catalyst in one step by a microwave process, which comprises: dispersing graphene oxide in aqueous solution of quaternary ammonium salt surfactant through ultrasonic waves, adding solution of a soluble Pd II salt or PtII salt, fully and uniformly mixing, regulating the pH value of mixed solution, adding a reducer, uniformly mixing, reacting under radiation of microwaves to reduce palladium and platinum metal ions and graphene oxide, and cooling, washing and drying the reactants to obtain the PdPt/graphene nano electrical catalyst. The method has the characteristics of energy conservation, environmental protection, quickness, simple process and the like. The obtained PdPt/graphene nano electrical catalyst hasa high electric catalysis performance for the electrochemical oxidization of methanol.

The invention discloses a cigarette core material free of burning during heating and a preparation method thereof. The cigarette core material comprises, by weight, 5-30 parts of plant fiber, 40-85 parts of tobacco raw material, 5-40 parts of smoke agent, 0-20 parts of tobacco flavor and 1-10 parts of auxiliary material. The cigarette core material is formed through dry-process airflow forming technology, thereby having high loading performance; high-proportion adding of the smoke agent is realized; high reducibility and porous physical structure of tobacco active ingredients that dry-process reconstituted tobacco leaves have are combined, so that efficient smoking of formed cigarettes free of burning during heating can be guaranteed, high-level sensory quality of formed cigarette products free of burning during heating and effective volatilization of formed smoke can be guaranteed, and the cigarette products are enabled to have good sensory quality and user experience.

A medical device that is at least partially formed of a novel metal alloy, which novel metal alloy improves the physical properties of the medical device.

The present invention provides a thermosetting composition which is excellent especially in storage stability and solid physical properties and can be used as automotive body sealers or undercoats. The thermosetting composition according to the present invention comprises an acrylic plastisol consisting of a plasticizer having acrylic resin particles having a gradient-type structure in which the monomer unit proportion changes from the core to the shell multistep-wise or continuously and a filler dispersed therein and therewith formulated, as a thermosetting material, a blocked urethane prepolymer or blocked polyisocyanate compound and a latent curing agent therefor.

A process for producing a filmy graphite includes the steps of forming a polyimide film having a birefringence of 0.12 or more and heat-treating the polyimide film at 2,400° C. or higher.

Disclosed are a method of manufacturing a continuous filament by electrospinning, and a continuous filament manufactured thereby. Electrospun nano fibers 4 are collected on a collector 7 by electrically spinning a polymer spinning dope in a spinning dope main tank 1 onto the collector 7, which is a disk-shaped conductive material with a high voltage applied thereto and which rotates at a rotational linear velocity of 5 m/sec or more, through nozzles 2 having a high voltage applied thereto, and then the nano fiber 4 collected on the collector 7 are prepared in the form of a continuous filament by use of a collecting roller 11, and then the nano fibers 4 are (I) put in a canvas 14 through a traverse 13, or (II) dried, drawn, and wound consecutively.

The continuous filament is superior in terms of drawing properties because nano fibers are arranged well in a filament axis direction, the continuous filament composed of nano fibers can be prepared by a continuous procedure, and the prepared continuous filament is useful as materials for various industrial fields, such as artificial leather, filters, and so on.

An electrode includes a network of compressed interconnected nanostructured carbon particles such as carbon nanotubes. Some nanostructured carbon particles of the network are in electrical contact with adjacent nanostructured carbon particles. Electrodes may be used in various devices, such as capacitors, electric arc furnaces, batteries, etc. A method of producing an electrode includes confining a mass of nanostructured carbon particles and densifying the confined mass of nanostructured carbon particles to form a cohesive body with sufficient contacts between adjacent nanostructured carbon particles to provide an electrical path between at least two remote points of the cohesive body. The electrodes may be sintered to induce covalent bonding between the nanostructured carbon particles at contact points to further enhance the mechanical and electrical properties of the electrodes.

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 present invention provides a lactam compound, a sugar transport enhancement agent containing this compound as an active ingredient, an agent for the prevention and/or treatment of diabetes mellitus, diabetic peripheral neuropathy, diabetic nephropathy, diabetic retinopathy, diabetic macrovascular disease, glucose tolerance anomaly, obesity and the like. In addition, the present invention also provides a preparation method for the novel lactam compound, and a preparation intermediate thereof.

The invention relates to a block type high-temperature-resistant copolyamide and a preparation method thereof. An aromatic polyamide prepolymer has the structure shown in the specification, wherein A is -(CH2)x1-, B is -(CH2)x2-, x1 and x2 can be 0, 1, 2, 3 and 4, and x1+x2 is less than or equal to 4. An aliphatic prepolymer has the structure shown in the specification, wherein D is -(CH2)x3-, and x3 can be 2, 4, 6, 8, 9, 10 or 11. The block copolyamide has the structure shown in the specification, wherein m1, m2 and m3 can be 0-80, and y1, y2 and y3 can be any integer greater than 1. The substance containing benzene ring has a para-position structure or meta-position structure, and the preparation method of the substance comprises preparation of the prepolymers and the block copolymer. The prepared block type high-temperature-resistant polyamide and the preparation method thereof enable the compatibility of polyamide to be good and products to be diversified, improve the performance,and are more practical.

Compositions for dry-cleaning garments containing dipropylene glycol tertiary-butyl ether (DPTB), water, and at least one other solvent selected from cyclic siloxanes and glycol ethers other than DPTB suitable for use as dry-cleaning solvents, wherein the water is present at a level of about 10% by weight or less.

The invention discloses a preparation method and a use of a paper surface sizing agent. The preparation method comprises the following steps of 1, preparing nanoscale microcrystalline cellulose colloid by hydrolyzing microcrystalline cellulose as a raw material by sulfuric acid, and 2, preparing the paper surface sizing agent by putting gelatinized cationic starch into a beaker, carrying out stirring by a magnetic stirrer, simultaneously, adding the nanoscale microcrystalline cellulose colloid into the cationic starch with stirring, and sequentially fully stirring at the same stirring rate to obtain the cationic starch composite sizing agent. A raw paper is spread on a glass plate and an end of the raw paper is fixed; a certain amount of the paper surface sizing agent is uniformly coated on the surface of the raw paper by a surface sizing rod; and the paper with the paper surface sizing agent is dried in air for a certain time and then is dried by an oven. The paper surface sizing agent can obviously improve paper surface physical properties such as tensile strength, tearability and bursting strength and has a low use amount.

A method comprising introducing a first casting material into a casting mold; applying directional solidification to the first casting material in the casting mold; introducing a second casting material into the casting mold, the second casting material having a different chemical composition than the first casting material; applying directional solidification to the second casting material in the casting mold; and forming a molded article, wherein the molded article comprises a first region

The invention discloses an insulation heat conduction glass fiber reinforced PC/ABS (Poly Carbonate/ Acrylonitrile Butadiene Styrene) alloy material and a preparation method thereof, belonging to the technical field of alloy materials. The alloy material disclosed by the invention comprises the following components in parts by weight: 50-90 parts of PC, 10-50 parts of ABS, 30-150 parts of heat conduction material, 10-30 parts of glass fiber, 2-5 parts of coupling agent, 0.1-1 part of antioxygen and 0.3-2 parts of glass fiber rich surface preventing agent. The invention also discloses a preparation method of the alloy material. The insulation heat conduction glass fiber reinforced PC/ABS alloy material keeps excellent physical performance of a PC/ABS alloy material, has excellent insulation heat conduction performance and heat conduction property, is enlarged in the application range in the market, and is especially applied to the electronics.

The invention discloses a between-closed-pore-and-open-pore EVA (Ethylene-Vinyl Acetate copolymer) foamed shoe material and a manufacturing method thereof and relates to an EVA foamed shoe material. The between-closed-pore-and-open-pore EVA foamed shoe material is prepared from raw materials: EVA, an ethylene-octylene copolymer, ethylene propylene terpolymer rubber, stearic acid, zinc stearate, zinc oxide, dicumyl peroxide, a foamer and color masterbatch. The method comprises the steps: mixing dicumyl peroxide and the foamer so as to prepare a mixture for later use, mixing the rest raw materials, then, carrying out first-stage banburying, adding the mixture of dicumyl peroxide and the foamer when the temperature reaches 105-110 DEG C, carrying out second-stage banburying, acquiring a mixed material until the temperature rises to 112-115 DEG C, thinning twice, carrying out roll releasing, putting roll release into a flat mold, adding sulfur and foaming; standing, and carrying out treatment, such as surface peeling, slitting, bevel cutting, cutting, polishing, hot-press sizing and trimming, thereby obtaining the between-closed-pore-and-open-pore EVA foamed shoe material.

A supported catalyst for synthesizing multi-walled carbon nanotubes includes a supporting body and a metal catalyst including Fe, Co, and Mn in a mole ratio according to Equation (1):

Fe:Co:Mn=1:x:y  (1)

wherein 2.0≦x≦4.0 and 0.01≦y≦5.00. The supported catalyst can be prepared by dissolving the metal catalysts into a solvent to prepare an aqueous solution of the metal catalysts; dissolving supporting body materials into a solvent to prepare an aqueous solution of the supporting body material; mixing the aqueous solutions and heating the mixed solution at temperature of about 100° to about 800° C. under normal atmospheric pressure for about 10 to about 40 min. Multi-walled carbon nanotubes can be prepared by placing the supported catalyst in chemical vapor deposition (TCVD) equipment and feeding hydrocarbon gas and hydrogen gas at a temperature of about 650° to about 1,100° C. under normal atmospheric pressure.

Glass compositions suitable for rotary fiberization. The compositions contain SiO₂ in an amount of about 49-56 wt %, Al₂O₃ in an amount of about 5.0-8.0 wt %, B₂O₃ in an amount of about 10-15 wt %, RO (MgO+CaO) in an amount of about 8-11 wt %, and R₂O (Na₂O+K₂O) in an amount of about 18-25 wt %. The compositions have an HTV in the range of about 1675°-1775° F. and a liquidus at least 100° F. below the HTV.

The invention provides a high voltage direct current cable insulation material, which comprises the following components in parts by weight: 100 parts of LDPE (Low-density Polyethylene), 1-2 parts of CPE (Chlorinated Polyethylene), 0.5-1.5 parts of BaTiO3, 0.6-1.5 parts of conductive potassium titanate whisker, 1-2.5 parts of a cross-linking agent, and 0.1-0.5 part of an antioxygen. A semiconductive polyolefin shielding material prepared from the high voltage direct current cable insulation material has the advantages of ultra-smooth surface feature, good physical property and excellent overall performance; electric current is effectively output to form a favorable uniform electric field, and partial discharge or insulation breakdown caused by severe electric field concentration due to surface defects of a semiconductive shielding layer is prevented; ionized charge and injected charge are absorbed in a deep trap, so that charge accumulating in a local area is avoided, space charge accumulation in a cable insulation material is restrained, and electrical conductivity of the cable insulation material is reduced.

The invention discloses an electroplating solution which mainly comprises an aqueous solution consists of the following substances: zinc, sodium hydroxide, sodium carbonate, a regulating agent, a plating bath solution, a secondary brightener and a bright-throwing power additive. According to the invention, some additives are added into the electroplating solution to adjust the proper zinc ion concentration and the current density, so that the electroplating solution has perfect throwing power; therefore, the electroplating solution has rather good current efficiency, throwing power and covering power. Thus a coating made of the electroplating solution has a better physical property and is more shiny, more full, more uniform and more exquisite with strong binding capability. The invention also discloses a preparation method of the electroplating solution and a galvanization technique using the electroplating solution.

The invention discloses a hard aluminum alloy for metal die casting of a precision electronic product structural member. The hard aluminum alloy is prepared by antigravity metal die casting and natural ageing heat treatment. The hard aluminum alloy comprises, by mass, 21-30% of zinc, 5.7-7.2% of silicon, 2.0-2.4% of copper, 0.17-0.35% of manganese, 0.2-0.6% of trace alloy element and the balance aluminum and unavoidable impurities with iron content of 0.27% or less. The invention also discloses a preparation method of the hard aluminum alloy. The hard aluminum alloy can be prepared by high precision die casting, has high strength, can be subjected to high quality surface treatment, can be used for production of a high precision structural member of small, thin and light electronic products, and is suitable for large parts of spaceflight and aviation, automobiles, high-speed railway, steamships and yachts and daily hardware products.

The invention discloses a matte thermoplastic elastomer which comprises, by weight, 20%-45% of styrene block copolymers, 30%-60% of filling oil, 5%-20% of polypropylene, 5%-12% of olefin thermoplastic elastomers, 0.5%-4% of organic matting agents, 0.1%-2% of stabilizers, 0.01%-0.05% of cross-linking agents and 0%-30% of inorganic filler. A preparation method includes: proportionally weighing raw materials, mixing the styrene block copolymers, the inorganic filler, the polypropylene, the olefin thermoplastic elastomers, the organic matting agents, antioxidants, the cross-linking agents and other auxiliaries in a high-speed mixer, and placing the mixture into a double-screw extruder for melt extrusion and extruding out prior to cooling, drying and grain cutting so that a finished product is obtained. By the method, the cross-linking agents of a proper amount and the organic matting agents of a proper amount are added into the thermoplastic elastomer, so that the prepared thermoplastic elastomer has a matting characteristic, and a visual effect is extremely soft. Intrinsic physical performances of the thermoplastic elastomer are basically kept, and the matte thermoplastic elastomer is extraordinarily excellent in processability, suitably applied to interior decoration materials of household appliances, automobiles and the like and particularly suitable for large-area injection molding products.

A positive photosensitive resin composition including: a resin comprising a structural unit having an acid dissociative group and a structural unit having a functional group capable of forming a covalent bond by reacting with a carboxyl group or a phenolic hydroxyl group; and an acid generator represented by the following formula (I):

The invention discloses a preparation method of an antibacterial and sterile nano bamboo carbon fiber. The method comprises the steps that (1) nano bamboo carbon powder is added to an aqueous solution containing a polyacrylate dispersing agent; a nano bamboo carbon water-based dispersion liquid is obtained after wet grinding; (2) an additive is immersed in the nano bamboo carbon water-based dispersion liquid; a mixture is obtained and heated to boiling for some time; antibacterial and sterile modified nano bamboo carbon dispersion liquid is obtained; (3) a mixture of methyl methacrylate and methyl acrylate is added to the antibacterial and sterile modified nano bamboo carbon dispersion liquid; an initiating agent is dropped while stirring; microencapsulated modified nano bamboo carbon is prepared; and (4) the microencapsulated modified nano bamboo carbon is subjected to viscose fiber wet spinning, and the antibacterial and sterile nano bamboo carbon fiber is prepared. The nano bamboo carbon fiber is good in physical property, good in spinnability, and low in cost, and industrial production can be achieved easily.

A composition for use in fabricating opto-electrical devices comprising a solution processable triazine host material and a phosphorescent moiety.

The invention discloses a preparation method of a castable polyurethane elastomer electrolyte, which comprises the following steps: preparing a prepolymer by using a polyether glycol and a diisocyanate as raw materials by adopting a prepolymer method, mixing the prepolymer with a lithium salt to carry out complexation reaction, reacting with a chain extender to prepare the castable polyurethane elastomer electrolyte, and curing and molding at room temperature. The castable polyurethane elastomer electrolyte prepared by the method has good mechanical properties and physical properties, has highelasticity, high strength and high elongation, is suitable for flexible device materials, and has room-temperature ionic conductivity greater than or equal to 10 <-7 > S/cm and ionic conductivity greater than or equal to 10 <-4 > S/cm at 60 DEG C.

The invention discloses an anticorrosive flame-resistant cable sheath insulating material and a preparation method thereof. The anticorrosive flame-resistant cable sheath insulating material comprises the following materials in parts by weight: 95-105 parts of chloroprene rubber CR121, 15-20 parts of chlorosulfonated polyethylene rubber CSM 2305, 15-25 parts of semi-reinforcing carbon black N774, 2-3 parts of magnesium oxide, 1-2 parts of aluminate coupling agent DL-411, 30-35 parts of barite powder, 1-2 parts of anti-ageing agent MB, 1-2 parts of di-(dioctyloxypyrophosphate) ethylene titanate, 5-8 parts of polyamide wax micro powder, 1-2 parts of accelerator DM, 0.8-1 part of accelerator TMTD (Tetramethyl Thiuram Disulfide), 15-25 parts of high-abrasion carbon black N330, 1-3 parts of adipic propylene glycol polyester, 2-4 parts of hydrated zinc borate, 4-6 parts of glass powder, 0.8-1 part of zinc oxide, 2-3 parts of modified bentonite and 4-6 parts of 4,4'-benzenesulfonyl oxodihydrazide. The anticorrosive flame-resistant cable sheath insulating material produced by the preparation method disclosed by the invention is excellent in physical properties, stable in dimension and low in shrinking percentage; moreover, the prompting strength, tearing strength and resilience force performance of the product can be greatly improved, so that the performance of the common silicon rubber is achieved under the normal temperature; and a hard shell is formed through erosion of high-temperature flame, and the eroded object is protected from being damaged.

A PU (polyurethane) coated skin comprises surface skin and inner skin, wherein the surface skin is prepared from an aliphatic diisocyanate component a1 and a polyalcohol composite material b1 through a reaction, and the inner skin is prepared from an aromatic isocyanate a2 and a polyalcohol composite material b2 through a reaction. A preparation method of the PU coated skin comprises following steps: A), the aliphatic diisocyanate component a1 and the polyalcohol composite material b1 are sprayed to a heated mold and subjected to the reaction, and the surface skin is formed; B), the aromatic isocyanate a2 and the polyalcohol composite material b2 are sprayed to the surface skin and subjected to a reaction, and the inner skin is formed. The skin prepared with the method has the advantages of having clear texture, touching comfortable, being resistant to light aging and scraping, containing low VOC (volatile organic compounds) and containing no forbidden heavy metal ions, has good physical properties and economic performance, and is particularly suitable for being used as the material for surface coatings of interior dashboards and auxiliary dashboards of automobiles and motorcycles, surface coatings of armrests and glove boxes, seat covers and the like.

The invention discloses a high-wear resistance cable sheath material. The high-wear resistance cable sheath material comprises the following raw materials by weight: 90 to 100 parts of chloroprene rubber DCR114, 10 to 20 parts of EPDM 4770R, 15 to 20 parts of nanometer bauxite, 20 to 30 parts of a modification filling material, 8 to 10 parts of dioctyl sebacate, 3 to 4 parts of polypropylene adipate, 4 to 6 parts of acetyl triethyl citrate, 2 to 4 parts of zinc oxide, 6 to 8 parts of chlorinated paraffin, 2 to 3 parts of antimony trioxide, 2 to 4 parts of triphenyl phosphite, 1 to 2 parts of the anti-aging agent MB, 1 to 2 parts of the promoter CZ and 0.8 to 1 part of sulphur. The cable sheath material produced in the invention has excellent physical properties, a stable dimension, low shrinking percentage, high tensile strength, great tearing strength, strong resilience and good resistance to oil, heat, burning, sunlight, ozone, acid and alkali and chemical reagents; and the modification filling material provided by the invention has good dispersibility and low surface tension, enables tensile strength and stress at definite elongation of the cable sheath material to be further improved, reduces heat generation and compression set, delays the ageing speed of the cable sheath material, is capable of resisting acid and alkali and allows production cost to be reduced.

The invention discloses a cable sheath insulating material for field logging and a preparation method of the cable sheath insulating material. The cable sheath insulating material comprises the following raw materials according to parts by weight: 97 to 102 parts of neoprene A90, 14 to 21 parts of Japanese JSR chemigum N220S, 19 to 26 parts of semi-reinforcing black N774, 2 to 3 parts of ferrocene, 1 to 2 parts of N, N'-m-phenylenedimaleimide, 31 to 36 parts of blanc fixe, 1 to 3 parts of anti-aging agent MB, 1 to 2 parts of 2-thiol benzimidazole, 5 to 9 parts of chlorcosane, 1 to 2 parts of accelerant DM, 0.8 to 1 part of ammonium trimolybdate, 19 to 29 parts of nanometer bauxite, 1 to 3 parts of polypropylene glycol adipate, 2 to 4 parts of zinc borate, 4 to 6 parts of epoxidized butyl ester, 0.8 to 1 part of zinc oxide, 2 to 3 parts of modified calcium carbonate, 1 to 2 parts of hexasulfide dipentamethylenethiuram, 1 to 1.2 parts of isopropyl tri(dioctyl pyrophosphoric acyloxy) titanate, and 2 to 3 parts of ammonium plyphosphate. The cable sheath insulating material for field logging, prepared by the invention, is excellent in physical performance, stable in dimension and low in percentage of contraction, and greatly reduces the pulling strength, the tearing strength and the resilience performance.