کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1395275 | 1501371 | 2015 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Dielectric strength of γ-radiation cross-linked, high vinyl-content polyethylene Dielectric strength of γ-radiation cross-linked, high vinyl-content polyethylene](/preview/png/1395275.png)
We explore γ-radiation cross-linking of high vinyl-content low-density polyethylene (LDPE) and its potential use as a high-voltage insulation material. Of the three investigated resins containing 1, 0.5 and 0.17 vinyl groups per 1000 carbons, respectively, only the highest vinyl-content material featured a sufficiently high gel content of more than 70% and hot-set elongation below 175%, when cross-linked with a γ-radiation dose of at least 68 kGy. Differential scanning calorimetry (DSC) and small-angle X-ray scattering (SAXS) reveal that neither the crystallinity nor the lamellar thickness of the highest vinyl-content LDPE are negatively affected by γ-radiation cross-linking. As a result, we find that the dielectric strength, as characterized by electrical tree initiation experiments, can be maintained upon γ-radiation cross-linking.
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Journal: European Polymer Journal - Volume 64, March 2015, Pages 101–107