| Issue |
MATEC Web Conf.
Volume 268, 2019
The 25th Regional Symposium on Chemical Engineering (RSCE 2018)
|
|
|---|---|---|
| Article Number | 04004 | |
| Number of page(s) | 3 | |
| Section | Materials and Processing | |
| DOI | https://doi.org/10.1051/matecconf/201926804004 | |
| Published online | 20 February 2019 | |
Degradation of PVC insulated cable by Small Punch test considering molecular weight change
School of Chemical Science and Engineering, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan
Corresponding author: yasu50401@gmail.com
PVC used as insulation material for industrial power cable was tried to evaluate degradation by Small Punch test (SP test) as a simple and easy assessment method. It was suggested that the SP test can analyze chemical changes from the correlation with IR. Qualitative assessment shows agreement between SP test and tensile test, and it is possible to apply to evaluation of strength at long aging times. However, the failure load in the SP test samples is complex and scattered, so that detailed study on SP test is required. Thus, we focused chemical reaction mechanisms and tried to clarify their influence on SP behavior. Molecular weight change was measured for each aging time by SEC and discussed how polymer chains are cut based on IR result. We discuss the relationship between molecular weight and the mechanical properties of PVC by SP test. The effectiveness of SP test as the evaluation method for residual life prediction will be addressed.
© The Authors, published by EDP Sciences, 2019
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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