Estimation for cell formation and critical nucleation radius of low-density polyethylene composites foaming process

Shan Wu; Li He; Chun Zhang; Tuanhui Jiang; Wei Gong

doi:10.1117/12.3015321

6 February 2024 Estimation for cell formation and critical nucleation radius of low-density polyethylene composites foaming process

Shan Wu, Li He, Chun Zhang, Tuanhui Jiang, Wei Gong

Author Affiliations +

Proceedings Volume 12979, Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023); 1297905 (2024) https://doi.org/10.1117/12.3015321
Event: 9th International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023), 2023, Guilin, China

Abstract

Cell formation in the foaming process of Low-density Polyethylene (LDPE)/p, p-oxybis (benzenesulfonylhydrazide) (OBSH) system was investigated by using a device that could visualize at a constant temperature, and the critical nucleation radius was estimated. The critical nucleation radius was of the order of 10 nm. The cell formation of LDPE foams follows the Boltzmann function, and the high correlation coefficient is as high as 0.9988. Subsequently, the first and second derivatives of cell number vs. time were developed to build a cell formation relationship in the foaming process, which reflects the efficiency and driving force of cell formation and describes these three stages (less-foamed, better-foamed, and over-foamed stage). Hence, the proposed method and estimation of critical nucleation radius can provide a further understanding of the cell formation mechanism in the foaming process.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Shan Wu, Li He, Chun Zhang, Tuanhui Jiang, and Wei Gong "Estimation for cell formation and critical nucleation radius of low-density polyethylene composites foaming process", Proc. SPIE 12979, Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023), 1297905 (6 February 2024); https://doi.org/10.1117/12.3015321

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