聚四氟乙烯分散液稳定性研究进展

doi:10.3969/j.issn.1001-1803.2021.05.014

Abstract

Abstract:

Owing to the extraordinary properties including high stability, low friction coefficient and large dielectric strength, polytetrafluoroethylene （PTFE） has been used more and more widely in various industries. Highly stable and concentrated PTFE dispersion is the important raw material used to prepare corresponding final products and additives. The preparation of PTFE dispersions was summarized, and then the assessment methods of their stability were introduced. The method based on multiple light scattering technology developed recently was introduced in detail. This method could not only obtain the stability information of PTFE dispersions, but also quantitatively analyze the instability phenomena and causes of the systems, such as floating, precipitation, flocculation, coalescence and so on. In addition, the stabilization mechanism of PTFE concentrated dispersions was reviewed. The research progress in the stability thereof in recent years was summarized, and the development trend of this field was prospected.

Key words: polytetrafluoroethylene, dispersion, surfactant, adsorption, stability

CLC Number:

TQ322

CHEN Yue,YIN Hong-yao,SUI Xiao-yuan,FENG Yu-jun. Progress in research of the stability of polytetrafluoroethylene dispersion[J].China Surfactant Detergent & Cosmetics, 2021, 51(5): 457-462.

Figures/Tables 5

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Progress in research of the stability of polytetrafluoroethylene dispersion

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