S. Ashihara, T. Goto, T. Yamazaki, K. Tomimatsu, H. Ito
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引用次数: 5
Abstract
We introduce the technology to make silane cross-linked polyethylene (Si-XLPE) thermoplastic using supercritical alcohol for material recycling of Si-XLPE. The new continuous process was developed using extruder for the treatment of supercritical fluid for industrialization. We successfully obtained recycled PE at the rate of 20 kg/h. The gel fraction of recycled PE was 0%, and its mechanical properties were similar to virgin PE. It means that siloxane bond was selectively decomposed. Then, 100% recycled PE was applied for the insulation of 600 V XLPE cable. The properties of the recycled cable satisfied JIS C 3605, the Japanese Industrial Standards of 600 V XLPE insulated cable. These results indicated that this technology can be applicable to the cable to cable recycling. Moreover, it was calculated that CO2 emission can be reduced by this technology in comparison with virgin PE.
介绍了利用超临界醇制备硅烷交联聚乙烯(Si-XLPE)热塑性塑料的工艺，并对硅烷交联聚乙烯(Si-XLPE)材料进行了循环利用。提出了用挤出机连续处理超临界流体的工业化新工艺。我们成功地以20公斤/小时的速度获得了再生PE。再生PE的凝胶分数为0%，其力学性能与原始PE相似。说明硅氧烷键被选择性分解。然后，采用100%再生PE对600v交联聚乙烯电缆进行绝缘。回收电缆的性能满足日本工业标准JIS C 3605, 600 V交联聚乙烯绝缘电缆。结果表明，该技术可应用于电缆对电缆的回收。并计算出与纯PE相比，该工艺可降低CO2排放量。
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