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159results about How to "Good processing performance" patented technology

Fully-biodegradable composition and preparation method thereof

The invention relates to a preparation method of a fully-biodegradable composition. The fully-biodegradable composition is prepared from the following components in parts by weight: 80-100 parts of polylactic acid, 0-20 parts of biodegradable polyester, 5-20 parts of flexibilizer, 0-20 parts of filler, 0.1-1 part of lubricant and 0.1-0.6 part of antioxidant. The preparation method of the fully-biodegradable composition comprises the following steps of: (1), drying polylactic acid, the biodegradable polyester and the filler; (2), weighing the components in parts by weight, adding the components to a high-speed mixer and mixing for 5 minutes to 10 minutes at high speed under normal temperature; and (3), adding the uniformly mixed materials to a double-screw extruder for melting, blending, extruding and pelletizing to obtain the needed fully-biodegradable composition. Compared with the prior art, the fully-biodegradable composition disclosed by the invention is not only good in processing performance, but also good in flexibility, and therefore, the prepared composition can be used for blow-molding and film-forming. Moreover, the adopted flexibilizer has a polylactic acid chain section, is good in compatibility with the polyactic acid substrate and capable of preventing the modifier from permeating.
Owner:WEIHAI LIANGAN ENVIRONMENTAL PROTECTION NEW MATERIAL TECH CO LTD

Maximum-thickness S355G10+N steel plate for ocean platform and production method of steel plate

The invention discloses a maximum-thickness S355G10+N steel plate for an ocean platform and a production method of the maximum-thickness S355G10+N steel plate. The production method of the maximum-thickness S355G10+N steel plate comprises smelting, casting, heating, rolling, cooling and heat treatment processes. The maximum-thickness S355G10+N steel plate comprises the following chemical ingredients in percentage by weight: 0.08-0.12% of C, 0.15-0.50% of Si, 1.40-1.65% of Mn, less than or equal to 0.015% of P, less than or equal to 0.005% of S, 0.040-0.060% of V, 0.020-0.030% of Nb, 0.020-0.050% of Al, less than or equal to 0.43% of Cea, less than or equal to 0.22% of Pcm and the balance of Fe and inevitable impurities. The maximum-thickness S355G10+N steel plate has the advantages that low-carbon and high-microalloying design thought is adopted in composition design, the problem of segregation of carbon and manganese is solved, and the requirements such as high strength, high impact toughness and wide cold bending performance are met; hardenability of the maximum-thickness S355G10+N steel plate is guaranteed under the low-carbon and low-equivalent carbon content conditions, and the maximum-thickness S355G10+N steel plate has good structure and overall performance and welding performance; and the maximum-thickness S355G10+N steel plate has good mechanical properties, welding performance and processability and can meet requirements of construction technological conditions of an ocean engineering equipment manufacturing plant.
Owner:WUYANG IRON & STEEL

Shoulder wedge composite material and manufacturing method thereof

The invention discloses a shoulder wedge composite material and a manufacturing method thereof. The shoulder wedge composite material consists of the following raw materials in part by weight: 100 parts of natural rubber, 10 to 50 parts of carbon series nano thermal conducting filler, 10 to 35 parts of coarse particle size carbon black, 2 to 6 parts of octyl phenolic resin, 2 to 4 parts of surfactant, 1 to 8 parts of silane coupling agent, 1.5 to 9 parts of vulcanizing agent and the balance of other common aids. The preparation method comprises the following steps of: plasticating the rubber in an internal mixer, adding the coarse particle size carbon black, the carbon series nano thermal conducting filler, the octyl phenolic resin, the surfactant and the other aids into the internal mixer, mixing and controlling the temperature to be between 80 and 120 DEG C; adding the silane coupling agent into the mixture, controlling the temperature to be between 120 and 160 DEG C, and discharging the sizing material; adding a master batch and the vulcanizing agent into the internal mixer and discharging products until the temperature is 80 to 120 DEG C, wherein if the other aids contain scorch retarder, the scorch retarder and the vulcanizing agent are added together. The shoulder wedge composite material provided by the invention meets the requirements of mechanical properties, and is low in themogenesis, high in thermal conductivity, and excellent in machinability.
Owner:BEIJING UNIV OF CHEM TECH +1

Semi-solid forming and casting technology of aluminum magnesium alloy pot

The invention discloses a semi-solid forming and casting technology of aluminum magnesium alloy pot. The semi-solid smelting of the casting technology adopts the rheological slurry temperature control smelting technology; metal tree crystal is broken up in rheological slurry temperature control smelting by electromagnetic mixing to form spherical crystal, the metal crystalline state as well as the metallic crystal nodularity of the aluminum magnesium alloy pot are improved, so that the aluminum magnesium alloy pot has high strength and high tenacity and is light in weight and firm compared with the traditional cast aluminum magnesium alloy pot; the smelting temperature of semi-solid slurry is low compared with the traditional casting, therefore, not only the energy consumption is greatly saved, but also the service life of casting dies is prolonged; and the aluminum magnesium alloy pot has no bubbles and needle holes on the surface, and the firm part has compact crystal and no casting defects. The technology realizes the semi-solid rheological extrusion forming of the aluminum magnesium alloy pot, and has high production efficiency, therefore, not only the quality of casts and the utilization ratio of materials are improved, but also the surface quality of the product is improved and the interior quality is equivalent to forging products; and the invention is suitable for scale production and has great popularization and application value.
Owner:李扬德

Solid electrolyte membrane, preparation method of solid electrolyte membrane, and lithium ion battery

The invention discloses a solid electrolyte membrane, a preparation method of the solid electrolyte membrane, and a lithium ion battery. The solid electrolyte membrane is a material of a composite structure, wherein the material is formed by compounding lithium inorganic solid electrolyte and a polymer; a polymer with a continuous three-dimensional sponge network structure is filled with the lithium inorganic solid electrolyte; the primary particle size of the lithium inorganic solid electrolyte is 0.01-3 microns; the polymer has the continuous three-dimensional sponge network structure; the diameter of the polymer in the network structure is 0.002-0.5 micron; a weight ratio of the lithium inorganic solid electrolyte to the polymer is 70:30 to 95:5; the composite structure has pores; the size of each pore is 0.01-3 microns; a ratio of the pore volume to the volume of the whole composite material is 1-15%; the overall thickness of the composite material is 1-50 microns; and the tensile strength is higher than 10MPa. According to the solid electrolyte membrane disclosed by the invention, high ionic conductivity of the lithium inorganic solid electrolyte can be maintained, and excellent processability, mechanical property, corrosion resistance and oxidation resistance can be provided.
Owner:上海纳晓能源科技有限公司

Method for preparing nickel-cobalt-manganese ternary cathode material

A method for preparing a nickel-cobalt-manganese ternary cathode material comprises the steps of: injecting a mixed gas of carbon dioxide and oxygen in a reaction device, adding a nickel-cobalt-manganese mixed solution to control the pH of the reaction solution to be 9.5-10.5, and preparing a core of a nickel-cobalt-manganese ternary precursor at the temperature of 75-95 DEG C; regulating the reaction temperature to 45-65 DEG C, and regulating the pH of the reaction solution to 11.5-12.5 after crystallization; adding the nickel-cobalt-manganese mixed solution and a complexing agent solution tocontrol the pH of the reaction solution to be 11.5-12.5 and control the reaction temperature to be 45-65 DEG C, and preparing a housing of the nickel-cobalt-manganese ternary precursor; performing post-treatment of the product such as ageing to obtain a nickel-cobalt-manganese ternary precursor of a composite [alpha]-type and [beta]-type core-shell structure; and performing ball-milling mixing ofthe nickel-cobalt-manganese ternary precursor with lithium hydroxide to obtain a burn-in ternary cathode material through high-temperature sintering; and performing high-temperature sintering to obtain a nickel-cobalt-manganese ternary cathode material. The prepared cathode material is good in capacity, is high in capacity maintenance rate after multiple cycle and outstanding in electrochemical performance.
Owner:兰州金通储能动力新材料有限公司

Cold-resisting (40 DEG C below zero) and high-flame retardant (OI is greater than or equal to 38) PVC (Polyvinyl Chloride) cable material and preparation method thereof

The invention discloses a cold-resisting (40 DEG C below zero) and high-flame retardant (OI is greater than or equal to 38) PVC (Polyvinyl Chloride) cable material and a preparation method thereof. The cold-resisting (40 DEG C below zero) and high-flame retardant (OI is greater than or equal to 38) PVC cable material is prepared from the following raw material components in parts by weight: 50 parts of polyvinyl chloride resin A, 50 parts of polyvinyl chloride resin B, 10 to 20 parts of plasticizer A, 10 to 30 parts of plasticizer B, 10 to 30 parts of plasticizer C, 20 to 30 parts of plasticizer D, 5 to 10 parts of plasticizer E, 1 to 3 parts of forming agent, 5 to 10 parts of flame retardant A, 5 to 10 parts of flame retardant B, 5 to 10 parts of flame retardant C, 0.2 to 0.8 part of lubricant A, 0.2 to 0.8 part of lubricant B, 0.2 to 0.8 part of lubricant C, 1 to 2 parts of antioxidant A, 1 to 2 parts of antioxidant B, 4 to 8 parts of high-efficiency calcium zinc stabilizer and 40 to70 parts of mineral filler. The cable material disclosed by the invention has the characteristics of cold resistance (40 DEG C below zero), excellent high-flame retardant property (OI is greater thanor equal to 38) and the like, and is suitable for being used in harsh environments with higher flame retardancy and external extreme cold.
Owner:JIANGSU SHANGSHANG CABLE GRP NEW MATERIAL CO LTD +1
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