An Facile High-Density Polyethylene - Exfoliated Graphite - Aluminium Hydroxide Composite: Manufacture, Morphology, Structure, Antistatic and Fireproof Properties

Abstract

Graphite intercalation compounds (GIC) and exfoliated graphite (EG) as raw materials were prepared with flake graphite, concentrated sulphuric acid (H₂SO₄), potassium bichromate (K₂Cr₂O₇) and peracetic acid (CH₃CO₃H) and characterized. Then, high-density polyethylene-exfoliated graphite (HDPE-EG) composites were fabricated with HDPE and EG via in situ synthesis technique in the different mass ratio, and their resistivity values (ohms/sq) were measured. Based on the resistivity values, it was discovered that HDPE-EG composite with the antistatic property could be fabricated while the mass ratio was 5.00 : 0.30. Last, HDPE-EG-aluminium hydroxide (HDPE-EG-Al(OH)₃) composites were manufactured with HDPE, GIC and Al(OH)₃ via the in situ synthesis-thermal expansion technique, and their resistivity values and limiting oxygen index (LOI) values were measured. Based on the resistivity values and LOI values, it was discovered that HDPE-EG-Al(OH)₃ composite with the antistatic and fireproof property could be manufactured while HDPE, GICs and Al(OH)₃ of mass ratio was 5.00 : 0.30 : 1.00. Otherwise, the petal-like morphology and structure of HDPE-EG-Al(OH)₃ composite were characterized, which consisted of EG, HDPE and Al(OH)₃.

DOI: http://dx.doi.org/10.5755/j01.ms.20.3.4275