Gas barrier properties of natural rubber/kaolin composites prepared by melt blending

  • Zhang, Yude
  • Liu, Qinfu
  • Zhang, Qian
 et al. 
  • 1


    Mendeley users who have this article in their library.
  • N/A


    Citations of this article.


A series of highly filled natural rubber (NR) composites based on silane modified kaolin (SMK), precipitated silica (PS) and their mixed-compound additions (SMK+PS) were prepared by melt blending. The transmission electron microscopy (TEM) was employed to characterize the NR composites. The kaolinite particles were finely dispersed into the natural rubber matrix and arranged in parallel orientation. Compared to the pure NR, these highly filled NR/SMK composites exhibited outstanding mechanical properties, excellent gas barrier properties and much higher thermal stability. The gas barrier properties of NR composites with SMK and PS were much higher than those of NR/PS composites and better than those of NR/SMK. The nitrogen permeability of NR/SMK composites was decreased by 20–40% after filling with kaolin. The significant improvements in the mechanical properties, thermal stability and gas barrier properties may be attributed to the parallel kaolinite particles which restricted the free movement of rubber chains and retarded the diffusion of the gas molecules. Thus, the highly filled NR/SMK composites may be used to improve the air-tightness of rubber products.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • Zhang, Yude

  • Liu, Qinfu

  • Zhang, Qian

  • Lu, Yinping

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free