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http://dx.doi.org/10.7234/composres.2022.35.3.147

Low-Temperature Characteristics of Type 4 Composite Pressure Vessel Liner according to Rotational Molding Temperature  

Jung, Hong-Ro (Major of Materials Engineering, Deptment of Marine Equipment Engineering, Korea Maritime and Ocean University)
Park, Ye-Rim (Department of Ocean Advanced Materials Convergence Engineering, Korea Maritime and Ocean University)
Yang, Dong-Hoon (Major of Materials Engineering, Deptment of Marine Equipment Engineering, Korea Maritime and Ocean University)
Park, Soo-Jeong (Department of Ocean Advanced Materials Convergence Engineering, Korea Maritime and Ocean University)
Kim, Yun-Hae (Major of Materials Engineering, Deptment of Marine Equipment Engineering, Korea Maritime and Ocean University)
Publication Information
Composites Research / v.35, no.3, 2022 , pp. 147-152 More about this Journal
Abstract
Low-temperature characteristics according to internal temperature conditions during rotational molding of Type 4 pressure vessel liners were studied in this paper. Since rotational molding has a sensitive effect on the formability of the liner depending on the temperature conditions, the temperature conditions for the polyamide used should be accurately set. The structural changes of polyamide as the liner material was analyzed the surface by atomic force microscope (AFM), and the crystallinity measured with a differential scanning calorimeter (DSC) is used to evaluate the change of the mechanical strength value at low temperature. In addition, the formability of the liner was confirmed by observation of the yellow index inside the liner. As a result, as the melting range of the internal temperature becomes wider, the yellow index shows a lower value, and the elongation and impact characteristics at low temperatures are improved. It was also confirmed that the structure of the polyamide was uniform and the crystallinity was high by AFM and DSC. These experimental results contribute to the improvement of characteristics at low temperatures due to changes in temperature conditions during rotational molding.
Keywords
Type 4 Composite Pressure Container Liner; Polyamide; Rotational Molding; Low-Temperature Characteristics;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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