78 results about "Antioxidant" patented technology

The invention relates to a 3D printing modified polyamino acid material. Raw materials for preparing the 3D printing modified polyamino acid material comprise, by weight, 75-85 parts of polyamino acid, 1-5 parts of a chain extender, 1-5 parts of a crosslinking agent, 0.5-1 part of a nucleating agent, 5-10 parts of a toughening agent, 0.1-0.5 parts of a thermal stabilizer, 1-5 parts of a reinforcing agent and 0.3-0.8 parts of an antioxidant. A low temperature crushing mixing reaction technology is used to modify polyamino acid, so the toughness, the impact strength and the thermal deformation temperature of the modified polyamino acid are greatly improved, thereby the polyamino acid material has a good application prospect in 3D printing.

The invention discloses a phase change energy storage thermoplastic composite material, which comprises the following components in percentage by weight: 5 to 30 percent of polypropylene, 10 to 40 percent of ethylene-propylene-diene monomer (EPDM), 20 to 75 percent of paraffin, 0.5 to 10 percent of cross-linking agent, 0.01 to 2 percent of antioxidant, 0.01 to 10 percent of processing aid and 0 to 10 percent of crosslinking aid. The components are subjected to dynamic vulcanization in one step in melting mixing equipment to obtain the phase change energy storage thermoplastic composite material. The phase change energy storage thermoplastic composite material has the processing characteristics of thermoplastic plastics, and has high breaking elongation, moderate hardness and flexibility; and the paraffin is coated in the crosslinked EPDM to form microcapsules, and the phase change energy storage thermoplastic composite material is excellent in shape retaining performance and low in percolation ratio and has the better application prospects in fields of construction, chemical engineering, energy and the like.

The invention discloses a skin-whitening cosmetic and a preparation method thereof and aims to provide a skin-whitening cosmetic which is excellent in whitening performance, free of lead and other ingredients harmful to the human bodyand high in safety. The skin-whitening cosmetic is characterized by being prepared from the following components in percentage by weight: 12-18% of moisturizing agent, 0.4-0.8% of preservative, 0.4-0.8% of freckle removing agent, 0.3-0.7% of solubilizer, 0.1-0.5% of thickening agent, 1.0-1.6% of skin conditioner, 0.5-1.5% of skin-whitening agent, 0.1-0.5% of chelating agent, 0.1-0.5% of antioxidant, 0.1-0.5% of aromatic and the balance of water. The skin-whitening cosmetic belongs to the technical field of the cosmetics.

The invention discloses metal drawing oil which is characterized by containing the following components in percentage by weight: 10-30% of oiliness agent, 20-40% of extreme pressure additive, 0-0.5% of antioxidant, 0-5% of corrosion inhibitor and the balance of base oil. The product disclosed by the invention contains a great deal of oiliness agent and extreme pressure additive, and can be used for providing favorable lubricating property and strong adhesive force, reducing the heat in a forming process, effectively lubricating a workpiece and a die, favorably protecting the die and prolonging the service life of the die. Due to the excellent extreme pressure property, the workpiece quality is effectively improved and the processing power is effectively increased under high, deep and difficult processing conditions; and the metal drawing oil is high in viscosity index, good in viscosity-temperature characteristics and high in temperature and weather adaptability.

The invention discloses totally synthetic non-staining bearing oil. The bearing oil comprises, by weight, 41-90% of synthetic lubricating oil, 2-20% of synthetic ester, 0.1-10% of an extreme pressure anti-wear additive, 0.1-10% of a purification dispersant, 0.1-10% of an antirust corrosion-resistant additive, 0.1-5% of an antioxidant, 0.01-0.1% of a demulsifying agent, 0.1-3% of a viscosity index improver and 0.01-1% of an antifoaming agent. The totally synthetic non-staining bearing oil has the advantages of being high in operating viscosity index, superior in lubricating property, high in high-temperature oxidation stability, wide in operating temperature range, superior in annealing detergence, particularly suitable for protection of lubricating, cooling, rust prevention and oil seal for bearing systems of steel rolling mills and non-ferrous metal rolling mills, and the like; and problems of insufficient lubricating property, poor oxidation stability, particularly poor surface quality of rolled workpieces due to oil dirt and stains during rolling processes in a mechanical drive process can be effectively solved, and the processing efficiency, the processing quality and the service life of devices can be greatly improved.

The invention discloses vegetable insecticide of soluble matrine special for killing plant louses and a preparation method thereof, which aims at providing the vegetable insecticide which adopts Chinese herbal medicine as raw material, has high matrine content and low toxin but high efficiency, is harmless to human and livestock as well as special for killing plant louses and the preparation method thereof. The invention comprises 11-13 portions of Chinese herbal medicine extract containing the matrine, 10-20 portions of emulsifier, 4-8 portions of penetrating agent, 0.1 portions of antioxidant and 57-64 portions of deionized water; the Chinese herbal medicine extract containing the matrine is the extract of the mixture by weight of 15-25 portions of sophora flavescens ait, 10-17 portions of chinaberry tree, 3-4 portions of argy wormwood leaf, 6-8 portions of celastrus angulatus maxim, 4-8 portions of derris, 2-4 portions of gardenia, 7-9 portions of herba artemisiae, 10-14 portions of gelsemium elegans, 5-7 portions of orange seed and 7-10 portions of Chinese wingnut leaf. The insecticide of the invention comprises the matrine with super high content about 1.3 percent and is special for killing the plant louses through scientific preparation of a plurality of Chinese herbal medicines and has powerful penetrating performance, high efficiency and insignificant toxin and is in favor of absorption by plants.

The invention is suitable for the technical field of high polymer materials and provides polyethylene terephthalate (PET)/liquid crystal polymer (LCP) engineering plastics as well as a preparation method and an application thereof. The PET/LCP engineering plastics comprise the following components in parts by weight: 30-50 parts of PET, 5-20 parts of LCP, 0.2-0.5 part of coupling agent, 30-40 parts of filler intensifier, 0.2-2 parts of nucleating agent, 0.2-0.4 part of antioxidant, 0.2-0.5 part of lubricating agent and 12-20 parts of flame retardant. For the PET/LCP engineering plastics, the LCP is used to modify the crystallization rate of the PET, thus the degree of crystallization of the PET is greatly improved so as to realize the obvious improvement for the performances of the PET/LCP engineering plastics. The preparation method of the PET/LCP engineering plastics has the advantages of low cost and high productivity effect, is simple in operation, and is suitable for industrial production.

The invention discloses an aluminum plastic plate flame-retardant core layer and an aluminum-plastic plate, and belongs to the technical field of building fireproof materials, wherein the aluminum plastic plate flame-retardant core layer comprises, by weight, 30-50 parts of a matrix resin, 30-40 parts of a flame retardant agent, 0.5-1.5 parts of a flame retardant synergist, 1-2 parts of an anionicsurfactant, 2-4 parts of a compatibilizer, 1-2 parts of an antioxidant, and 0.5-1.5 parts of an antibacterial agent, wherein the matrix resin comprises low density polyethylene, polypropylene, an ethylene-octene copolymer and ethylene-ethyl acrylate according to a weight ratio of 6:2:1:1, and the flame retardant agent comprises magnesium hydroxide and expandable graphite according to a weight ratio of 6:1. According to the present invention, the prepared core layer has good mechanical property, can meet the requirements of the flame retardant B1 grade, and further has antibacterial property;and the aluminum plastic plate prepared from the flame retardant core layer has the good performances of the core layer, and further has the peel strength meeting the standard value.

The invention relates to a preparation method of an antioxidant. The preparation method of the antioxidant provided in the invention comprises the following steps: culturing plant lactobacillus in a culture medium containing soybean residues, and obtaining the antioxidant from the resultant supernatant. The invention also provides the antioxidant having a high SOD activity obtained through the preparation method. The antioxidant is obtained through utilizing a specific microbe and adopting the byproduct soybean residues of the food processing industry and the like as a main raw material of the medium according to the preparation method provided in the invention, and the preparation method has the advantages of low cost and high efficiency.

The invention discloses a cold resistant anti-impact modified polypropylene (PP) and a preparation method thereof. The cold resistant anti-impact modified polypropylene comprises the following raw materials by weight: 70-80 parts of PP, 10-15 parts of POE, 5-10 parts of SBS, 20-30 parts of a mineral additive, 10-15 parts of a silane coupling agent, 1-3 parts of an antioxidant, and 5-8 parts of a dispersant. Compared with pure PP, the modified PP has tensile strength improved by 15-25%, impact strength increased by 35-45%, and molding shrinkage decreased by more than 80%. The invention uses POE, SBS, mineral raw materials and other modifiers to conduct blending modification on PP, effectively improves the low temperature resistance of PP, and endows a modified polypropylene composite material with excellent impact resistance, rigidity, aging resistance and cold resistance. Modified polypropylene can meet the impact strength requirement of automobile bumpers, can be widely applied to processing of automobile bumpers, instrument panels, body-building racks and other parts with low temperature resistance, and has excellent comprehensive performance.

The invention relates to an ultra-thin PE (polyethylene) film for a packaging bag. The ultra-thin PE film comprises components in parts by mass as follows: 20-40 parts of EVA (ethylene vinyl acetate) FL0014, 10-30 parts of MLLDPE (metallocene linear low-density polyethylene) 1018 FA, 30-40 parts of linear HDPE (linear high-density polyethylene) 2045Q, 20-35 parts of HDPE LD100AC, 0.5-1.0 part of a slipping agent and 0.2-0.8 parts of an antioxidant. The ultra-thin PE film has the advantages that linear grains in a production process of the film are eliminated, the film has better heat sealing property and ageing resistance, the tensile strength is higher than the national standard by 20%, and the shelf life of the film is prolonged by 6-8 months than the conventional products.

The present invention relates to the technical field of polymer composite materials, particularly to a low-odor polypropylene composite material and a preparation method thereof, wherein the low-odorpolypropylene composite material is prepared from the following components by weight, 55-99 wt% of polypropylene, 0.1-2 wt% of an odor adsorbent, 0.1-3 wt% of a small molecular deodorant, 0.05-0.5 wt%of a scratch-resistant agent, 0-40 wt% of talc powder, 0.1-1 wt% of a main antioxidant, 0.1-1 wt% of an auxiliary antioxidant, and 0.1-1 wt% of a lubricant. According to the present invention, with the technical scheme, the production cost is low, the market prospect is good, and the obtained low-odor polypropylene composite material can be used in the vehicle field such as vehicle instrument panels, door protection plates, sub-instrument panels and other vehicle interior and exterior decoration parts, and the household appliance field such as refrigerators and small household appliances.

The present invention relates to a rubber composition, and discloses a high-damping rubber composition and a preparation method therefor. A high-damping rubber composition comprises the following components: 100 parts by mass of diene rubber, 2-10 parts by mass of stearic acid, 2-40 parts by mass of an antioxidant, 2-20 parts by mass of zinc oxide, 2-10 parts by mass of phenolic resin, 100-140 parts by mass of a reinforcing agent and 2-5 parts by mass of a sulfurizing agent. Under the joint action of the antioxidant and the phenolic resin or the like, the composite material obtained by the diene rubber in the present invention has a good vibration reduction damping performance, while the mechanical performance, the storage modulus and the loss modulus are improved. A dynamic mechanical performance curve of the composite material moves to a direction of high temperature, and the rubber composition has a relatively wide effective damping temperature range.

The invention provides a copolymerized nylon powder material used for selective laser sintering, and a preparation method thereof. The method comprises the following steps: carrying out a copolymerization reaction on a short-chain nylon raw material and a long-carbon chain nylon raw material by using a copolymerization reaction principle to obtain copolymerized nylon resin, carrying out cryogenic crushing, drying and screening on the copolymerized nylon resin, and adding a flow aid and an antioxidant to obtain the copolymerized nylon powder material used for selective laser sintering. The preparation method has the advantages of simple process and easiness in control, and copolymerized nylon powder particles have a narrow particle size distribution, can be well used in secondary molding, and is suitable for being used in the field of manufacturing of additional materials.

The invention discloses an antibacterial and hydrolysis-resistant thermoplastic polyurethane elastomer and a preparation method of the polyurethane elastomer, and belongs to the field of high molecular materials. The polyurethane elastomer is prepared from the following raw materials by mass percentage: 40-70% of hydroxyl-terminated polyhydric alcohol, 20-40% of diisocyanate, 4-15% of micromolecular dihydric alcohol chain extender, 1-5% of hydrolysis stabilizer, 0.1-0.5% of antioxidant, 0.1-0.5% of light stabilizer, 0.1-0.5% of mildewproof agent, 0.5-1% of lubricant and 0.001-0.005% of catalyst. The mildewproof agent is added, so that the antibacterial property of the polyurethane elastomer is improved, and the service life of the polyurethane elastomer is prolonged; the hydrolysis stabilizer is added, so that the problem of degradation of the polyurethane elastomer in a hygrothermal environment is solved; and compared with current commonly used disc method and casting method technologies, a product synthetized by the polyurethane elastomer has the characteristics of stable extrusion, uniform molecular weight and few colloidal crystal point.

The invention provides a preparation method of a rose collagen peptide beverage with a function of maintaining beauty and keeping young. The product (namely the rose collagen peptide beverage) comprises the following components in parts by mass: 76-90 parts of multi-petal red rose extract, 4-8 parts of roselle extract, 0.5-4.5 parts of collagen peptide, 1-3 parts of concentrated fruit juice, 1-2 parts of rose cell liquid, 1-2 parts of resistant dextrin, 1-2 parts of L-arabinose, 0.6-1.2 parts of a stabilizer, 0.5-1.0 part of trehalose, 0.05-0.15 part of sodium citrate, 0.1-0.2 part of citric acid, 0.002-0.004 part of sucralose and 0.2-0.4 part of an antioxidant. The processing process comprises the following steps: extract preparation, proportioning, mixing, filtration, filling, sterilization and cooling. The beverage has a scientific formula and a simple preparation method. The prepared product not only contains collagen peptide, dietary fibers and a plurality of other nutrients, butalso has the characteristics of being tasty with slight sweetness and sourness, strong in rose fragrance, attractive in color and luster, high in stability and long in shelf life, and is a low-sugar and low-calorie healthy beverage for maintaining beauty and keeping young.

The invention discloses a high-molecular self-lubricating material and a preparation method of the high-molecular self-lubricating material. The high-molecular self-lubricating material is prepared from the following ingredients in parts by weight: 100 parts of polybutylene terephthalate resin, 5 to 30 parts of aramid fiber, 3 to 20 parts of wear-resistant agents, 5 to 12 parts of toughening agents, 0.1 to 2.0 parts of antioxidants and 0.1 to 2.0 parts of stabilizing agents. The high-molecular self-lubricating material has the advantages that the mechanical property is excellent; the wear-resistant performance is excellent; the dimension stability is high. The invention also discloses a plate spring flanged bushing, which is made of the high-molecular self-lubricating material through injection molding. The plate spring flanged bushing has the advantages that the structure is simple; the weight is light; the maintenance is avoided; the abrasion resistance is realized.

The invention relates to a production technique for extracting a rosemary antioxidant through ultrasonic wave, which comprises the following steps: heating dried rosemary raw materials (branches and leaves) at room temperature or slightly in 3 to 10 folds of organic solvent under the condition that an ultrasonic wave generator is started to extract the rosemary antioxidant; and reclaiming the organic solvent, and performing column chromatography on the mother solution through macroporous resin to obtain the rosemary antioxidant of which the content is not less than 40 percent. The method mainly aims at the defects that the prior extracting process generates degradation to the rosemary antioxidant and the like, adopts the ultrasonic wave to assist the extraction of the rosemary antioxidant so that the degradation problem of the rosemary antioxidant in the extraction process is solved well; besides, the method remarkably saves the energy consumption, the cost and the like, and the quality of the rosemary antioxidant obtained through one step is higher.

The invention discloses a skin moisturizing composition, which includes traditional Chinese medicine moisturizing agents, moisturizing agents, antioxidants, and anti-inflammatory agents. The moisturizing composition of the invention is applied in cosmetics, which can endow the cosmetics with a significant moisturizing effect. It also has anti-oxidation and anti-inflammatory effects, making the skin more moisturized, white and elastic.

The invention relates to a method for keeping quality stability of clindamycin phosphate injection. The method is characterized by comprising the following steps of: (1) adding an antioxidant in an amount which accounts for 0.05 to 4 percent of the total mass of the clindamycin phosphate injection into the prepared clindamycin phosphate injection and fully stirring to dissolve the antioxidant; and (2) introducing nitrogen gas into the solution at the flow velocity of 2ml/minute for 10 to 20 minutes and sealing the injection, wherein the antioxidant is sodium sulfite. Because a certain amount of antioxidant is added into the clindamycin phosphate injection, clindamycin phosphate can be protected from being oxidized; and because the nitrogen gas is introduced into the clindamycin phosphate injection to replace oxygen in the solution, the clindamycin phosphate is protected from being oxidized; therefore, the clindamycin phosphate has stable quality in the solution and is difficult to degrade and oxidize; and the medication safety of the clindamycin phosphate is improved. The method is easy to operate, has low cost and contributes to wide popularization.

The invention provides an aluminum profile chromate-free passivation agent. The chromate-free passivation treatment agent includes, by weight percent, one or more of hexafluorozirconic acid, hexafluorotitanic acid, zirconium tetrafluoride, potassium fluozirconate and fluosilicic acid, water soluble phenolic resin, carboxymethyl cellulose, a silane coupling agent, sodium nitrate, an alkaline adjusting agent, a rare earth additive, an auxiliary and deionized water. The auxiliary is one or more of a stabilizing agent, a pH adjusting agent, a thickening agent, a leveling agent, a coalescing agent, a wetting agent and an antioxidant. The metal surface treatment agent is used for treating a metal product, the antirust performance of the product can be obviously improved, especially, the surfaces of aluminum and aluminum alloy products can be treated.

Disclosed is a waterproofing membrane that comprises a carrier sheet, a pressure sensitive adhesive layer on one surface of the carrier sheet, and a protective coating layer on the adhesive layer. The protective coating layer is highly reflective (optionally textured) and operative to bond to concrete cast against it. Preferably, the protective coating layer comprises cement, polymer, and white pigment, and may optionally or additionally include a filler, a UV absorber and an antioxidant. The protective coating layer protects the membrane against weather exposure, tolerates foot traffic and strongly adheres to concrete cast against it. Also disclosed is a waterproofing membrane comprising a carrier sheet, a pressure sensitive adhesive layer, a protective coating layer (as described above), and a highly releasable bonding layer.

The invention relates to the technical field of polymer materials, and concretely relates to a high-rigidity and high-toughness resin material for clothing buttons. The resin material includes unsaturated polyester resin, styrene, acrylate, rigid toughened mother powder, polyamide wax, a pearlescent pigment, an ultraviolet absorber, a promoter, an initiator and an antioxidant, wherein the rigid toughened mother powder is a special high-hardness elastomer material; the ultraviolet absorber is one of an ultraviolet absorber UV-327, an ultraviolet absorber UV-P and an ultraviolet absorber UV-9; the promoter is cobalt isooctylate or cobalt naphthenate; the initiator is methyl ethyl ketone peroxide; and the antioxidant is an antioxidant 1076, an antioxidant 164 or an antioxidant TNP. The buttons made of the resin material have the advantages of high toughness, difficulty in fracture, good rigidity and outstanding impact resistance.

The present invention discloses a grafted blending oil-resistant halogen-free electric cable insulation material, which comprises, by weight, 10-20 parts of a vulcanized silicon resin, 40-60 parts of an EVA resin, 10-30 parts of polyamide, 10-20 parts of a POE grafted zinc maleate ionomer, 1-10 parts of low density polyethylene, 1-10 parts of calcium chloride, 60-90 parts of a modified flame retardant agent, 0.1-1 part of a coupling agent, and 0.5-5 parts of an antioxidant. According to the present invention, the grafted blending oil-resistant halogen-free electric cable insulation material uses the maleic anhydride grafted modified low density polyethylene, such that the electric cable is durable, can be used in the kitchen and other heavy oil places, and can still continuously work after encounter of various oil leakage conditions so as to win time for repair; and the process is simple, the use is safe, and the broad market application prospect is provided.