Research of Surface Protecting Glue for the Magneto-optic Disks Made in Our Country

：Research and development of magneto-optic disk's surface protecting glue which takes important place and cost much price in the magneto-optic materials are done in this paper. Firstly, we have mastered the ingredient of importing glue through analysis, and then through test equipment working and samples testing, we have solved difficult problems which include solidification time, hardness, surface flatness and aging, etc. As a result, the test indexes of magneto-optic disk surface protecting glue get to or exceed the level of imporing glue from Big Japanese Painting Company while the glue's cost is just one fifth of the latter's.