Method for preparing long afterglow luminous paper

• Main Authors: LIN RUNHUI, ZHOU LIANG, YE XIAOZHAO
• Format: Patent
• Language: Chinese; English
• Published: 07.04.2010
• Subjects: ADHESIVES; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; DYES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; IMPREGNATING OR COATING OF PAPER; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; POLISHES; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PRODUCTION OF CELLULOSE; PULP COMPOSITIONS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TEXTILES; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G

The invention discloses a method for preparing long afterglow luminous paper which has a simple production process, a long afterglow length and a low product cost. The method successively comprises the following steps of: (1) synthesizing SrAl2O4:Eu and Dy long afterglow luminescent powder at a low temperature by using a combustion synthesis method; (2) processing the long afterglow luminescent powder at a high temperature; (3) enveloping the long afterglow luminescent powder; and (4) printing base paper of the long afterglow luminescent powder. The method has the following main advantages that: the combustion method has a quick synthesis rate, the temperature is far lower than that in a high temperature solid phase method, and the method is an efficient and energy-saving technique, and compared with the conventional high temperature solid phase method, the luminous performance of the adopted high temperature post-treatment is improved to a certain degree; the particle size of the luminescent powder product i