The invention relates to a stabilizer auxiliary agent, in particular to a non-
toxic environment-friendly stabilizer auxiliary agent and a preparation method thereof. The stabilizer auxiliary agent is prepared from, by weight, 45-65 parts of
calcium acetylacetonate, 30-40 parts of modified molecular sieves, 5-10 parts of a chelating agent and 5-10 parts of a
coupling agent. A preparation method of the modified molecular sieves comprises the steps of conducting
drying and
dehydration treatment on molecular sieves, then mixing the molecular sieves with
pentaerythritol ester and diisooctyl phenyl phosphite, and
grinding the mixture, so that the modified molecular sieves are obtained. When the non-
toxic environment-friendly stabilizer auxiliary agent is used, such constituents as beta-
diketone,
bisphenol A and pentaerythrite in a traditional
calcium-
zinc stabilizer formula can be substituted, the consumption of hard
calcium and hard
zinc is reduced, the excellent synergistic effect and lubricating effect are achieved,
heat stability time of a PVC product can be prolonged, the
precipitation and blooming phenomena are prevented, later-period weatherability is improved, and production cost is lowered. The invention further provides the preparation method of the non-
toxic environment-friendly stabilizer auxiliary agent.