Thioester type auxiliary antioxidant-added aluminum paste composition

2015 
The invention provides a thioester type auxiliary antioxidant-added aluminum paste composition. The composition is prepared from the following components in parts by mass: 100 parts of aluminum powder, 200 parts of solvent oil, 2 parts of titanate, 2 parts of stearic acid, 1-5 parts of hindered phenol type primary antioxidant and 1-5 parts of thioester type auxiliary antioxidant, wherein the hindered phenol type primary antioxidant is independently used and can be used for providing thermal stability to aluminum paste under a storage condition; and the thioester type antioxidant serving as an auxiliary antioxidant is compounded with the hindered phenol type antioxidant to achieve a synergistic effect and remarkably improve the antioxidation efficacy of aluminum paste. After the formula is applied to aluminum paste, the temperature for oxidative degradation of the aluminum paste can be remarkably increased; and the antioxidant-added aluminum paste is subjected to an aging test in an oven at 100 DEG C for 24 hours, and the appearance change becomes smaller. The thioester type auxiliary antioxidant-added aluminum paste composition has excellent antioxidation stability.
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