Material Analysis
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Insufficient DSTDP addition amount, poor antioxidant effect
Problem Phenomenon
DSTDP addition in the plastic formulation is 0.05wt%, far below the 0.2wt% recommended amount
Cause Analysis
As a secondary antioxidant, DSTDP needs to be combined with primary antioxidants 1010/168 at 0.2-0.3wt% to be effective
Solution
1) Increase DSTDP addition to 0.2-0.3wt%; 2) combine with primary antioxidants 1010 0.1wt%+168 0.1wt%; 3) DSTDP masterbatch method to ensure uniform dispersion
Key Takeaway
As a secondary antioxidant, DSTDP needs to be added in sufficient amount and combined with primary antioxidants
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