| Autor: |
FANG Ting, LI Jifeng, YAN Wenjing, GU Diankuan, HE Yindi, DU Zhaofang |
| Předmět: |
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| Zdroj: |
Silicone Material; Aug2022, Vol. 36 Issue 4, p668-673, 6p |
| Abstrakt: |
In order to obtain the controllable and simple preparation of fixed-shape phase change energy storage materials, polyethylene glycol (PEG) was introduced into PAN fibers using electrostatic spinning to prepare ultrafine PAN/PEG composite fibers with phase change energy storage and stable size. Rheometer, scanning electron microscope, infrared spectrum, thermal analyzer and fabric strength meter were used to analyze the effects of PEG blending ratio on the viscosity and fiber structure properties of the spinning precursor. The results showed that with the increase of PEG content, the viscosity of the spinning precursor showed a trend of first increasing and then decreasing, and the shape of fibers was regular. When the PAN/ PEG blend ratio was 80 : 20, the diameter of fibers reached 97 nm. PEG and PAN molecules have good compatibility through hydrogen bonding, which ensures the dimensional and thermal stability of the composite fibers. The melting temperature and melting enthalpy of the composite fibers increase with the increase of PEG content. The flexible molecular chains of PEG can significantly improve the toughness of fibers. The experiment provides a technical scheme for preparing microfiber with definite phase change. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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