Co-dispersion and co-deposition of clay/MoS2 and its application on epoxy nanocomposites

Han Lin Xie, Wei Han, Xin Yan, Bao Jian Ni, Bin Chen, He Xin Zhang, Keun Byoung Yoon

Research output: Contribution to journalArticlepeer-review

Abstract

In recent years, polymer nanocomposites based on 2D materials have aroused widespread research interest. MoS2 exhibits many excellent properties due to its unique structure, such as mechanical properties, thermal stability, and fire resistance properties. It has great potential as a polymer reinforcement material and functional nanofiller. However, it is well known that the exfoliated MoS2 layers have a tendency to aggregate during mixing with polymers, which results in the polymer performance cannot be effectively improved. In this work, clay was introduced into molybdenum disulfide (MoS2) to improve the dispersion of exfoliated MoS2. After co-deposition, two different layered fillers co-stacked to form a novel clay/MoS2 composite. The presence of clay in the MoS2 slurry prevented aggregation of the individual clay and MoS2 layers. The resulting clay/MoS2 composite was further used as fillers to form epoxy/clay/MoS2 nanocomposites. The effects of clay, MoS2 and clay/MoS2 mixture on the properties of epoxy nanocomposites were investigated and compared. It was found that combining clay and MoS2 allows the enhancement of tensile strength and tensile modulus. Additionally, due to the well co-dispersion of clay and MoS2, the thermal stability and mechanical properties of epoxy/clay/MoS2 nanocomposites are higher than those of epoxy/clay and epoxy/MoS2 nanocomposites. Therefore, this work provides a facile way to produce high-performance epoxy nanocomposites.

Original languageEnglish
Pages (from-to)781-788
Number of pages8
JournalIranian Polymer Journal (English Edition)
Volume30
Issue number8
DOIs
StatePublished - Aug 2021

Keywords

  • Clay
  • Epoxy
  • Mechanical properties
  • MoS
  • Nanocomposite

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