Fluorescent anti-counterfeiting material and preparation method thereof

• Main Authors: WU XUANQI, LANG SIRUI, KONG XIANGDONG, CHEN FEI, TIAN BAOXIANG, CHEN CEN
• Format: Patent
• Language: English
• Published: 24.06.2015
• Subjects: ADHESIVES; CHEMISTRY; DYES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES

The invention relates to a fluorescent anti-counterfeiting material and a preparation method thereof and belongs to the technical field of preparation of biological materials. The preparation method of the fluorescent anti-counterfeiting material comprises the following steps: preparing a nano fluorescent material by adopting a hydrothermal synthesis method, firstly regulating pH of cadmium acetate solution to be alkaline, then sequentially adding mercaptoacetic acid, tellurium-ion-containing solution and potassium borohydride while stirring, after stirring is carried out for a period of time, heating a system until the system is boiled, performing sustained reaction, centrifuging, washing until supernate is free of fluorescence under ultraviolet radiation, and carrying out freeze drying on separated precipitates; treating the dried precipitates, and further compounding with a carrier material with stable properties, so that the fluorescent anti-counterfeiting material is obtained, wherein the used carrier material is nano calcium carbonate. The fluorescent anti-counterfeiting material is easy to prepare, high in repeatability and available and is stable in fluorescent property, easy to identify and convenient for detection; and the fluorescent anti-counterfeiting material has an important application prospect in the fields of commodity anti-counterfeiting due to unique properties.