| 摘要 |
PURPOSE: A luminous sheet and its preparation method are provided, to allow the luminous sheet to show high brightness and long afterglow without the deterioration of other sheet mechanical properties. CONSTITUTION: The luminous sheet comprises a luminous resin layer comprising 3-40 wt% of a luminous light-emitting substance represented by (M0.9996-0.998Eu0.0006-0.002)Al2O4(M0.9996-0.998Eu0.0006-0.002)O·n(Al(1-b-a)BbQa)2O3 and 70-97 wt% of a synthetic resin; and a white film layer. In the formula, M is at least one element selected from the group consisting of Sr, Ca, Mg and Ba; Q is La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Y, Lu, Mn and Bi; a is 0.0005-0.002; b is 0.001-0.35; and n is an integer of 1-9. Preferably the thickness of the luminous resin layer is 0.1-50 mm, and the thickness of the white film layer is 0.01-20.0 mm. |
