Epoxy sealant for flexible display screen and preparation method thereof

The invention discloses an epoxy sealant for a flexible display screen and a preparation method thereof.The preparation method comprises the steps that a carboxymethyl cellulose solution and a mixed salt solution are blended and then subjected to a hydrothermal reaction to obtain carboxymethyl cellulose intercalated hydrotalcite, then the carboxymethyl cellulose intercalated hydrotalcite is calcined to obtain biochar intercalated hydrotalcite, and the biochar intercalated hydrotalcite is added into the carboxymethyl cellulose intercalated hydrotalcite to obtain the epoxy sealant for the flexible display screen. The obtained biochar has a certain adsorption effect on oxygen, and meanwhile, the biochar is intercalated in a hydrotalcite structure, so that the hydrotalcite structure is more compact, and the effect of blocking oxygen can also be achieved to a certain extent; the preparation method comprises the following steps: firstly, modifying charcoal intercalated hydrotalcite by using an epoxy silane coupling