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首页> 外国专利> METHOD FOR PREPARING POLYACRYLATE/AMINO-MODIFIED GRAPHENE OXIDE COMPOSITE LEATHER FINISHING AGENT BY USING ULTRASONIC-ASSISTED METHOD

METHOD FOR PREPARING POLYACRYLATE/AMINO-MODIFIED GRAPHENE OXIDE COMPOSITE LEATHER FINISHING AGENT BY USING ULTRASONIC-ASSISTED METHOD

机译：超声辅助法制备聚丙烯酸酯/氨基改性氧化石墨烯复合皮革涂饰剂的方法

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摘要

A method for preparing a polyacrylate/amino-modified graphene oxide composite leather finishing agent by using an ultrasonic-assisted method. The method comprises: step 1: carrying out ultrasonic dispersion on graphene oxide, thionyl chloride, and dimethylformamide, then adding dimethylformamide, carrying out rotary evaporation till constant weight, sequentially adding triethylamine and NH3•H2O, and carrying out suction filtration and washing; adding distilled water into a flask, stirring in an ice bath, adding sodium hydroxide and bromine, stirring and then adding a product obtained by suction filtration, and carrying out suction filtration, washing and drying to obtain amino-modified graphene oxide powder; step 2: mixing deionized water, polyvinyl alcohol 400, and sodium dodecyl sulphate to uniformly dissolve them, sequentially adding methyl methacrylate, butyl acrylate, acrylic acid, and hydroxyethyl acrylate, emulsifying and heating till reflux stabilization, and then dropwise adding methyl methacrylate, butyl acrylate, hydroxyethyl acrylate, and an initiator aqueous solution that is prepared from ammonium persulfate and deionized water; after the addition is completed, heating and maintaining the temperature, cooling and discharging, so that a polyacrylate emulsion is obtained; and adjusting pH of the polyacrylate emulsion, then adding the amino-modified graphene oxide powder, stirring and carrying out ultrasonic dispersion, so that the polyacrylate/amino-modified graphene oxide composite leather finishing agent is obtained.
机译：一种通过超声辅助法制备聚丙烯酸酯/氨基改性氧化石墨烯复合皮革涂饰剂的方法。该方法包括：步骤1：在氧化石墨烯，亚硫酰氯和二甲基甲酰胺上进行超声分散，然后加入二甲基甲酰胺，旋转蒸发至恒重，依次加入三乙胺和NH 3 •H 2 O，并进行抽滤和洗涤;向烧瓶中加入蒸馏水，在冰浴中搅拌，加入氢氧化钠和溴，搅拌后，加入抽滤得到的产物，进行抽滤，洗涤，干燥，得到氨基改性氧化石墨粉。步骤2：将去离子水，聚乙烯醇400和十二烷基硫酸钠混合均匀溶解，依次加入甲基丙烯酸甲酯，丙烯酸丁酯，丙烯酸和丙烯酸羟乙酯，乳化并加热至回流稳定，然后逐滴加入甲基丙烯酸甲酯，丁酯丙烯酸酯，丙烯酸羟乙酯和由过硫酸铵和去离子水制备的引发剂水溶液;加完后，加热并保持温度，冷却并排出，得到聚丙烯酸酯乳液。调节聚丙烯酸酯乳液的pH，然后加入氨基改性的氧化石墨烯粉，搅拌并进行超声分散，得到聚丙烯酸酯/氨基改性的氧化石墨烯复合皮革涂饰剂。

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