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86 results about "Polyethyleneglycol stearate" patented technology

Hard alloy extrusion forming agent, preparation method thereof and application of hard alloy extrusion forming agent in extrusion production

The invention discloses a hard alloy extrusion forming agent, a preparation method thereof, and application of the hard alloy extrusion forming agent in extrusion production. The hard alloy extrusion forming agent comprises the following components in percentage by weight: 60 to 85 percent of a solvent namely ethylene glycol diacetate, 10 to 30 percent of a bonding agent namely ethyl cellulose and 5 to 10 percent of a surface active agent namely fatty alcohol-polyoxyethylene ether. The preparation method of the hard alloy extrusion forming agent comprises the steps of blending, mixing, heating and stirring materials. The application of the hard alloy extrusion forming agent in extrusion production of a hard alloy comprises the following steps of: blending materials, and performing ball milling on 0.8 to 3.0 weight percent of a plasticizer namely polyethylene glycol stearate and the balance of a hard alloy raw material; drying and granulating to obtain a mixture containing the plasticizer; mixing 5 to 7 weight percent of a forming agent with the mixture to obtain an extrusion feeding material; extruding a blank; drying to remove the solvent in the forming agent; curing the blank, and fixing the length of the blank through semi-finishing to form a semi-finished product; and sintering to obtain a finished product. By adopting the hard alloy extrusion forming agent, the qualified rate and labor efficiency of a product are improved, the cost is reduced, the localization, safety and environmental friendliness of raw materials are achieved, and the operating environment is improved.
Owner:ZHUZHOU HARD ALLOY GRP CO LTD

Composition for leveling agent and leveling agent as well as preparation method thereof

The invention discloses a composition for a leveling agent, the leveling agent and a preparation method thereof. The composition for the leveling agent comprises the following raw materials in parts by weight: 15 to 20 parts of polyethylene glycol stearate, 3 to 6 parts of fatty amine polyoxyethylene ether, 6 to 8 parts of polysorbate, 2 to 4 parts of sodium dodecyl benzene sulfonate, and 35 to 40 parts of deionized water. The invention also provides a method for preparing the leveling agent by using the composition. The method for preparing the leveling agent by using the composition comprises the following steps of adding the polyethylene glycol stearate, the fatty amine polyoxyethylene ether, the polysorbate and the dodecyl benzene sulfonate into a reaction kettle with an agitator in sequence, mixing and agitating an obtained mixture, and adding the deionized water into the obtained mixture while agitating the obtained mixture. The invention also provides the leveling agent, which is prepared according to the method. Matching raw materials of the composition for the leveling agent are a few, and are simple and easy to obtain; the preparation cost is low; the prepared leveling agent is good in retarding, migration and dispersion effects; further, the reparation method is simple.
Owner:JIANGSU HAIAN PETROCHEM PLANT

Hydroxycamptothecin nano crystal lyophilized powder for injection preparation and preparation method thereof

The invention discloses a method for preparing a nanometer hydroxycamptothecin crystal freeze-dried powder preparation. Main raw materials of the nanometer hydroxycamptothecin crystal freeze-dried powder preparation consist of an active raw material, namely hydroxycamptothecin, phospholipids, a surfactant, namely poloxamer 188 or polyethylene glycol stearate-15, and a freeze-dried auxiliary material excipient. The method for preparing the nanometer hydroxycamptothecin crystal freeze-dried powder preparation comprises the following steps: after the hydroxycamptothecin is added into an alkaline solution to be dissolved, the phospholipids are added in an ultrasonic water bath, and the poloxamer 188 or the polyethylene glycol stearate-15 is added into the mixture under magnetic stirring to be dissolved; the pH value of glacial acetic acid is adjusted to be between 4.0 and 6.0, and hydroxycamptothecin crystals are precipitated; and then the high-pressure homogenization is performed to obtain a nanometer hydroxycamptothecin crystal suspension, and then the freeze-dried auxiliary material excipient is added to be freezely dried to obtain the nanometer hydroxycamptothecin crystal freeze-dried powder preparation. The method is simple and easy to operate. Nanometer crystal freeze-dried powder has the advantages of high dispersity, good stability and so on. The average size of the crystals is 355.6nm, the average content of the hydroxycamptothecin in a sample is 98.5 percent of labeled amount, and the effect of inhibiting and killing liver cancer and gastric cancer cells of the preparation is remarkably stronger than that of a hydroxycamptothecin injection.
Owner:ZHENGZHOU UNIV

Preparation method of flame-retarding anti-cracking type graphite heat dissipation sheet

The invention relates to a production method of graphite heat dissipation sheets and in particular relates to a preparation method of a flame-retarding anti-cracking type graphite heat dissipation sheet. The flame-retarding anti-cracking type graphite heat dissipation sheet is prepared by taking modified expanded graphite as a matrix and modified talcum powder and modified wollastonite fibers as areinforcing agent, and adding with silica sol, copper powder, iron powder and the like; firstly, graphite powder is modified by utilizing a concentrated sulfuric acid solution; the modified graphitepowder is blended with acetic anhydride and potassium permanganate to obtain expanded graphite; after the graphite is treated through concentrated sulfuric acid, a relatively good heat-insulation layer is formed, so that the flame-retarding property of the graphite heat dissipation sheet is improved; a pyrophosphoric acid acyloxy group is introduced into the surface of the graphite heat dissipation sheet so that the flame-retarding property of the graphite heat dissipation sheet is improved; polyethylene glycol stearate and the silica sol are continually used for modifying the wollastonite fibers; the contact area between the graphite heat dissipation sheet and the matrix is enlarged by adopting a coarse surface structure, and the bonding strength of an interface can be effectively improved, so that the anti-cracking performance of the graphite heat dissipation sheet is improved and the graphite heat dissipation sheet has a wide application prospect.
Owner:常州水精灵环保设备有限公司

Preparation method of high-cracking resistance rock wool board

The invention discloses a preparation method of a high-cracking resistance rock wool board, belonging to the technical field of preparation of rock wool boards. According to the preparation method, the rock wool board with high cracking resistance and bonding strength is prepared by taking basalt fibers as a main material and rubber powder polyphenyl particles, glass melting liquid, quartz sand and the like as reinforcing filling materials, and the main material and the reinforcing filling materials are firmly connected together, so that the bonding strength of the rock wool board is effectively improved; polystyrene is foamed by virtue of a foaming agent to form a hard hole-closed structure, and formed polystyrene particles are dually modified by virtue of a bonding agent and a silane coupling agent, so that the bonding strength of the rock wool board is improved; the glass melting liquid is modified by virtue of polyethylene glycol stearate, so that the expansion of cracks can be inhibited, the mechanical property of the rock wool board can be improved; and after glass fibers are modified, the contact areas with the basalt fibers are increased by virtue of rough surface structures, the bonding strength of an interface can be substantially enhanced, the cracking resistance and bonding strength of the rock wool board are further improved; and the preparation method has wide application prospects.
Owner:常州富思通管道有限公司

Polyurethane protective film and preparation method thereof

The invention relates to a polyurethane protective film and a preparation method thereof, the polyurethane protective film comprises a single-side antistatic PET base material layer, an antistatic coating and a PET antistatic release film layer, the other side of the single-side antistatic PET base material layer is coated with the antistatic coating, and the antistatic coating comprises the following components in parts by weight: 40-70 parts of composite polyurethane resin; 0.4-4.0 parts of a curing agent; 0.2-2.8 parts of a leveling agent; and 100-140 parts of a solvent, wherein the composite polyurethane resin is prepared from polyurethane resin and a modified antistatic agent; the antistatic agent comprises a trihydroxyethyl methyl quaternary ammonium methyl sulfate salt, or one or any combination of the trihydroxyethyl methyl quaternary ammonium methyl sulfate salt, polyethylene glycol stearate and polyethylene glycol laurate; the ratio of the polyethylene glycol laurate to the trihydroxyethyl methyl quaternary ammonium sulfate methyl ester salt to the polyethylene glycol stearate is (0-0.4): 1: (0-0.6). According to the polyurethane protective film disclosed by the invention, the tearing voltage generated when the protective film of the touch screen is torn is relatively low, and the modified antistatic agent is not easy to separate out under high-temperature and high-humidity conditions.
Owner:HEFEI LUCKY SCI & TECH IND

Preparation method for supported zinc oxide photocatalyst

The invention discloses a preparation method for a supported zinc oxide photocatalyst. The preparation method comprises the following steps: weighing raw materials consisting of, by weight, 30 to 50 parts of cadmium nitrate hexahydrate, 5 to 10 parts of polyethylene glycol stearate, 15 to 20 parts of thiourea, 5 to 10 parts of red mud, 1 to 2 parts of cobaltous carbonate and 10 to 15 parts of kaolin; adding cadmium nitrate hexahydrate into an ultrasonic generator, adding absolute ethyl alcohol for dissolving, then adding a sodium hydroxide solution and carrying out an ultrasonic reaction so as to obtain a suspension A; adding thiourea into a stirrer and then adding a proper amount of water so as to obtain a suspension B; pouring the suspension B into the suspension A, then adding polyethylene glycol stearate and carrying out an ultrasonic reaction so as to obtain a mixed solution; adding the mixed solution, red mud, cobaltous carbonate and kaolin into a ball mill, adding a proper amount of water and carrying out stirring so as to obtain a paste; and carrying out drying, crushing and roasting so as to obtain the photocatalyst. The preparation method has the advantages of wide sources of raw materials, low cost, simple preparation process, high production efficiency and low energy consumption; and the prepared photocatalyst has the advantages of good adsorption performance, high catalytic activity, high catalysis efficiency, etc.
Owner:GUANGXI NANNING SHENGQIAN TECH DEV CO LTD

Preparation method of recyclable lightweight graphene sponge oil absorbing material

The invention discloses a preparation method of a recyclable lightweight graphene sponge oil absorbing material, and belongs to the technical field of environmentally friendly materials. The preparation method of the recyclable lightweight graphene sponge oil absorbing material comprises the following steps: after carrying out mixing reaction on graphene oxide, sodium polystyrenesulfonate and water, filtering, washing and drying the mixture to obtain pretreated graphene oxide; after mixing and dipping the pretreated graphene oxide in an iron salt solution, carrying out slow heating reaction under the protection state of reducing gas, and then carrying out acid leaching, washing and drying to obtain an impurity removed reducing material; and then dispersing the impurity removed reducing material in anhydrous ethanol, successively adding (N-guanyl) dodecylacrylamide, polyoxyethylene stearate, dicyclopentadienyl iron and p-dichlorobenzene in a constant-temperature stirring state, keepingstirring reaction, and then carrying out suction filtering, washing and drying to obtain the recyclable lightweight graphene sponge oil absorbing material. The recyclable lightweight graphene sponge oil absorbing material prepared by the technical scheme has the characteristics of excellent oil absorbing property and recycling property, and has wide prospect in development of the environmentally friendly material technical industry.
Owner:胡果青
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