Facile Construction of Hierarchical Polymeric Positive Temperature Coefficient Composites for Improved Reproducibility

Bao-Yu Wang; Heng-Yu Zhao; Xin Ji; Wei Hu; Yu-Ru Duan; Jian-Ze Li; Zi-Hao Zhang; Ying Liang; Bin Fang; Zhen Zhang

doi:10.1007/s10118-026-3658-x

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Facile Construction of Hierarchical Polymeric Positive Temperature Coefficient Composites for Improved Reproducibility

RESEARCH ARTICLE | Updated：2026-07-27

- Facile Construction of Hierarchical Polymeric Positive Temperature Coefficient Composites for Improved Reproducibility
- Chinese Journal of Polymer Science Vol. 44, Issue 8, Pages: 2681-2690(2026)
- Affiliations：
  
  a.School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
  b.School of Physics, East China University of Science and Technology, Shanghai 200237, China
- Author bio：
  
  yliang@ecust.edu.cn (Y.L.)
  zhangzhen@ecust.edu.cn (Z.Z.)
- Funds：
- DOI：10.1007/s10118-026-3658-x
  CLC：
- Received：16 January 2026，
  
  Accepted：11 March 2026，
  
  Online First：26 May 2026，
  
  Published：15 August 2026
- Accepted：
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Wang, B. Y.; Zhao, H. Y.; Ji, X.; Hu, W.; Duan, Y. R.; Li, J. Z.; Zhang, Z. H.; Liang, Y.; Fang, B.; Zhang, Z. Facile construction of hierarchical polymeric positive temperature coefficient composites for improved reproducibility. Chinese J. Polym. Sci. 2026, 44, 2681–2690

Bao-Yu Wang, Heng-Yu Zhao, Xin Ji, et al. Facile Construction of Hierarchical Polymeric Positive Temperature Coefficient Composites for Improved Reproducibility[J]. Chinese Journal of Polymer Science, 2026, 44(8): 2681-2690.
Wang, B. Y.; Zhao, H. Y.; Ji, X.; Hu, W.; Duan, Y. R.; Li, J. Z.; Zhang, Z. H.; Liang, Y.; Fang, B.; Zhang, Z. Facile construction of hierarchical polymeric positive temperature coefficient composites for improved reproducibility. Chinese J. Polym. Sci. 2026, 44, 2681–2690 DOI： 10.1007/s10118-026-3658-x.

Bao-Yu Wang, Heng-Yu Zhao, Xin Ji, et al. Facile Construction of Hierarchical Polymeric Positive Temperature Coefficient Composites for Improved Reproducibility[J]. Chinese Journal of Polymer Science, 2026, 44(8): 2681-2690. DOI： 10.1007/s10118-026-3658-x.

摘要

A solution-mixing strategy based on the solubility difference of polymers was employed to fabricate hierarchical polymeric positive temperature coefficient (PPTC) composites. Benefiting from the relay function of the PA1010/TiC particles

the reproducibility was significantly improved.

Abstract

Adopting composite matrices has great significance for improving the performance of polymeric positive temperature coefficient (PPTC) materials. However

the uncontrollable selective distribution of fillers in different matrices induced by the differences in compatibility severely limits the flexible design and regulation of conductive networks. A solution-mixing strategy based on the solubility difference of polymer matrices in different solvents was employed to flexibly fabricate hierarchical PPTC composites

achieving the precise localization of conductive fillers. In the hierarchical structure

PVDF/TiC served as the first-level PTC material

whereas the PA1010/TiC particles acted as the other-level PTC material. The PA1010/TiC particles serving as relay stations also participated in the construction of the PVDF/TiC conductive network. Benefiting from the restriction effect of the PA1010/TiC particles for the PVDF chains and TiC fillers

the negative temperature coefficient (NTC) effect was effectively suppressed

and a maximum

PTC

of 8.9 was obtained. Moreover

in cyclic testing

the PVDF phase crystallized posterior to the PA1010 phase

generating compression and releasing latent heat for the PA1010 phase

which synergistically reinforced the crystallization of the PA1010 phase

enabling rapid reconstruction of long-range conductive networks in the entire system. Therefore

the reproducibility and

hold

of the hierarchical PPTC thermistor were significantly improved. This strategy not only breaks the bottleneck of the selective distribution of fillers in the multi-matrix of PPTC materials

but also achieves dynamic control of hierarchical conductive networks

suggesting a new pathway toward the overall improvement of the performance of PPTC thermistors.

关键词

Keywords

references

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