These stabilizers could inhibit the thermal decomposition at the early stage, and meanwhile prolong the long-term heat stability of PVC.
当PVC初期受热分解时，分子链上的初期稳定官能团起作用，抑制其分解。
The prepared phenol-free heat stabilizer can improve the initial dyeing property and the long-term heat stability of the PVC and has low price.
本发明制备的无酚热稳定剂可以提高PVC的初期着色性、长期热稳定性，而且价格低廉。
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