Electrically conductive CB/PA6/HDPE composite with a CB particles coated electrospun PA6 fibrous network

• CB coated electrospun PA6 membranes were embedded into HDPE to prepare a CPC.
• The percolation, 4.3 vol%, is much lower than that of common CB/HDPE, 8.5 vol%.
• The composition of PA6 is only 1.5 vol% in the CB/PA6/HDPE CPC.

Electrically conductive carbon black (CB)/polyamide 6 (PA6)/high density polyethylene (HDPE) composite with a low percolation threshold was fabricated by embedding conductive CB/PA6 membrane into the HDPE matrix. The CB/PA6 membrane was prepared by localizing CB particles on the surfaces of the electrospun PA6 fibrous membrane by a dip-coating method. Percolation threshold of this CB/PA6/HDPE composite was only ca. 4.3 vol%, showing a considerable reduction compared to that of the common CB/HDPE (8.5 vol%). Through the present method, a conductive polymer composite with enhanced processability and lowered cost has been achieved with extremely low loading of PA6 (1.5 vol%).

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