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939results about How to "UV resistant" patented technology

Aqueous environment-friendly packaging steel drum paint and preparation method thereof

InactiveCN101735703AGood anti-corrosion decoration effectHigh hardnessAnti-corrosive paintsEpoxy resin coatingsEpoxyAcrylic resin
The invention relates to an aqueous environment-friendly packaging steel drum paint, which is prepared by mixing the following compositions in part by weight: 20 to 70 parts of aqueous solution of acrylic resin with a solid content of 30 to 80 percent and/or aqueous solution of epoxy resin with the solid content of 30 to 80 percent, 4 to 10 parts of aqueous solution of amino resin with the solid content of 60 to 98 percent, 1 to 5 parts of organic amine, 1 to 50 parts of filling materials with the granularity of more than 2,000 meshes, 0.5 to 10 parts of color paste, 0.2 to 2 parts of wetting levelling agent, 0.2 to 2 parts of thickening agent, 0.1 to 0.8 part of antifoaming agent, 1 to 5 parts of adhesive force accelerant, 0.2 to 5 parts of catalyst, 0 to 30 parts of alcohol diluting solvent and/or 0 to 5 parts of non-toxic ether diluting solvent, and 20 to 50 parts of deionized water. The aqueous environment-friendly packaging steel drum paint has the advantages of wide application range, high rigidity, good flexibility, strong adhesive force and good anti-scraping and anti-collision properties and environmental protection; and meanwhile, the invention discloses a preparation method for the aqueous environment-friendly packaging steel drum paint.
Owner:重庆亢石新材料科技有限公司

Aqueous fluorine-containing acrylate modified polyurethane coating, preparation method and application thereof

The present invention belongs to the field of polymer material synthesis, relates to aqueous polyurethane acrylate emulsion modification, and especially to an aqueous fluorine-containing acrylate modified polyurethane coating, a preparation method and an application thereof. The preparation method comprises: dissolving polyether polyol in an N-methyl pyrrolidone solution of dimethylol propionic acid; adding diisocyanate in a dropwise manner; adopting dibutyltin dilaurate as a catalyst, and adding hydroxyethyl methacrylate to carry out end capping; adding triethylamine to form a salt, then adding deionized water to prepare an aqueous polyurethane acrylate prepolymer emulsion; and finally adding hexafluorobutyl acrylate and azodiisobutyronitrile to prepare the aqueous fluorine-containing acrylate modified polyurethane coating. The synthesized emulsion of the present invention has the following advantages that: dispersion is uniform; stability is good; water resistance and mechanical property of the cured film are substantially improved; elasticity and mechanical property of polyurethane are provided; ultraviolet resistance, nuclear radiation resistance, flexibility, excellent surface properties, water resistance and corrosion resistance of the fluorine-containing material are provided; and the coating can be adopted as coatings for building and furniture.
Owner:BOMEX CHEM SHANGHAI

Irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin cable material for photovoltaic cables

The invention provides an irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin cable material for photovoltaic cables. The cable material is prepared from the following raw materials in parts by weight: 40-50 parts of polyethylene (PE), 30-40 parts of polyvinyl chloride resin, 20-30 parts of CSM2305, 10-12 parts of ethylene-acrylate copolymer, 10-15 parts of epichlorohydrin rubber T3100, 5-10 parts of epoxidized soybean oil, 2-3 parts of carbonyl iron powder, 10-12 parts of high abrasion carbon black N330, 5-10 parts of light calcium carbonate, 1-2 parts of zinc oxide, 5-10 parts of wollastonite powder, 4-5 parts of vermiculite, 1-2 parts of polytetrafluoroethylene micro powder, 1-2 parts of graphite, 1-2 parts of nano boron carbide, 2-3 parts of ferric oxide, 0.1-0.2 part of UV-O, 0.1-0.2 part of UV-53, 0.1-0.2 part of flame retardant TBC, 10-12 parts of aluminium hypophosphite, 5-8 parts of decabromodiphenyl ether, 8-10 parts of dioctyl terephthalate, 6-8 parts of trioctyl trimellitate, 8-10 parts of triethyl citrate, 1-2 parts of calcium stearate, 0.2-0.4 part of stearic acid, 0.1-0.2 part of oxidized polyethlene wax, 0.2-0.3 part of ethylene bis stearamide, 0.1-0.2 part of DCP, and 12-15 parts of modified filler. The cable material has the characteristics of high flame retardance, high ultraviolet resistance and high ageing resistance, and meanwhile, has a good mechanical property, and is environment-friendly.
Owner:温州市粤来电子加速器应用有限公司

Giant salamander oligosaccharide peptide, preparation method and application thereof in cosmetics

InactiveCN101812116AImprove the ability of monocytes to phagocytize bacteriaEnhance monocyte vitalityCosmetic preparationsToilet preparationsMolecular sieveChemistry
The invention discloses giant salamander oligosaccharide peptide, a preparation method and application thereof in cosmetics, wherein the molecular weight of the prepared giant salamander oligosaccharide peptide is smaller than 4000Da, a sugar chain is connected with serine or threonine through GalNAc, and the giant salamander oligosaccharide peptide has a -Galbeta1-3GalNAcalpha-O-Ser/Thr structure. The preparation method comprises the following steps of: homogenizing giant salamander grume at the temperature of 0-10 DEG C; adding 1-3 time volume of 0.01-0.1M phosphate buffer and complex enzyme into a homogenate and carrying out enzymolysis for 12-48 hours, wherein the pH value of the phosphate buffer is 7-8, the mass ratio of the complex enzyme to the homogenate is 0.1-1 percent, and the complex enzyme is formed by proportionally mixing ocean alkali protease, papain, pepsin and trypsinase in the activity unit ratio of 3:3:2:2; centrifugalizing to obtain a supernatant, separating by adopting an ultrafiltration membrane separator with the interception molecular weight of below 4000Da and obtaining a liquid permeating an ultrafiltration membrane; collecting an OD280nm absorption peak through a Sephadex LH-20 molecular sieve chromatography column; and freezing and drying the collected liquid after passing through macroporous absorbent resin and activated carbon to prepare the giant salamander oligosaccharide peptide.
Owner:ZHANGJIAJIE JINCHI ANDRIAS DAVIDIANUS BIOLOGICAL SCI

Transparent and toughening polylactic acid resin and method for preparing the same

The invention provides a transparent and toughening polylactic acid resin and method for preparing the same. The polylactic acid resin consists of polylactic acid, methyl methacrylate-butyl acrylate copolymer as the flexibilizer, citrate plasticizer, pentaerythritol toltetranitrate (Benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-) as the antioxidant and tris (2,4-ditert-butylphenyl) phosphate. First, premix is prepared by mixing polylactic acid, flexibilizer, plasticizer and antioxidant mechanically. Then the premix is subject to melt extrusion and granulation by utilizing double-screw extruder. The above method has the advantages of increasing the anti-impact strength, tensile strength and elongation at break of polylactic acid and maintaining the transparency thereof. In addition, the viscosity of the blends is decreased, thereby remedying the defects of brittleness of polylactic acid and improving the rheological behavior of materials obviously. The impact strength is up to 60.1KJ/M2.The light transmittance and the haze of the products are 89% and 8.5% respectively when the thickness thereof is 0.04mm.The above polylactic acid resin, instead of PE and PVC, is applicable to the preparation of films, plates, sheet materials, foamings and injection moulding plastics.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI

Wear-resistant, drag-resistant and low-temperature resistant flexible cable and fabrication method thereof

The structure of a wear-resistant, drag-resistant and low-temperature resistant flexible cable comprises a cable core, wherein the cable core is formed by twisting three main wire cores, three ground wire cores and a cable core gap semiconductive filler, each main wire core comprises a cross-linking wire core formed by co-extruding a conductor, a semiconductive nylon strap, a conductor shielding layer, an insulation layer and an insulation shielding steam continuous vulcanization layer, each ground wire core comprises a conductor and a semiconductive material steam continuous vulcanization extruded on a surface of the conductor, an isolation strip, an inner sheath, a fiber weaving reinforcement piece and an outer sheath are sequentially applied outside the cable core to form a finished cable, the conductors adopt tin-plated annealed copper conductors, filaments of the tin-plated annealed copper conductors are more slim, and the diameter ranges of the filaments are 0.1-0.41 millimeter. A cable fabrication method comprises the steps of fabricating the main wire cores and the ground wire cores; fabricating the cable core; winding an isolation strip; extruding the inner sheath; weaving the reinforcement layer; and performing steam continuous vulcanization extruding or radiating the cross-linking outer sheath. The cable fabricated according to the method can conform to the design and application requirements, and meanwhile, the qualified rate reaches over 99%.
Owner:JIANGSUSNGSHANG CABLE GROUP
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