MULTIPLE EXOTHERMIC BEHAVIOUR OF POLYETHYLENE.

被引：0
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作者：
Lee, Yew-Wing [1 ]
机构：
[1] Hong Kong Polytechnic, Kowloon, Hong Kong, Hong Kong Polytechnic, Kowloon, Hong Kong
来源：
| 1600年 / 18期
关键词：
DIFFERENTIAL THERMAL ANALYSIS - Applications - POLYMERS - Antioxidants;
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摘要：
The change of shape patterns of the oxidation peak on differential thermal analysis curves of a series of formulations of polyethylene has been investigated. The unstabilized sample exhibits two oxidation peaks. When a chain-terminating antioxidant and dilaurylthiodipropionate were added to polyethylene, it was found that as the concentration of dilaurylthiodipropionate increases, the second oxidation peak reduces in size. In many instances when the amount of dilaurylthiodipropionate reaches 0. 3% (by weight), the second oxidation peak disappears. The influences of processing method and outdoor exposure on the peak shape have also been examined.
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