一种防潮粘胶剂及其制备方法

本发明公开了一种防潮粘胶剂及其制备方法，通过组分A和组分B共混制得，组分A包括如下重量份原料：改性树脂乳液80-100份、云母粉10-15份、氧化铝粉8-15份，组分B为改性扩链剂乳液，云母粉的加入能够增加粘胶剂的抗冲击性，氧化铝粉能够增加粘胶剂的粘附性，将组分A与组分B共混时，改性扩链剂上氨基与改性树脂上的异氰酸酯基反应，形成以倍半硅氧烷为核，聚氨酯为壳的核壳结构，且表面的壳结构致密能够有效的防止粘胶剂固化后吸湿，同时壳表面还含有大量的疏水基团，使得粘胶剂不易与水分子接触，并且提升了粘胶剂的耐水效果。 The invention discloses a moisture-proof adhesive and a preparation method thereof.The moisture-proof adhesive is prepared by blending a component A and a component B. The component A is prepared from, by weight, 80-100 parts of modified resin emulsion, 10-15 parts of mica powder and 8-15 parts of alumina powder, the component B is modified chain extender emulsion, and the impact resistance of the adhesive can be improved by adding the mica powder; the alumina powder can increase the adhesion of the adhesive, when the component A and the component B are blended, amino groups on the modified chain extender react with isocyanate groups on the modified resin to form a core-shell structure with silsesquioxane as a core and polyurethane as a shell, and the shell s