Breaking graphite through a ball-milling process: the thermal conductivity and mechanical properties of polyethylene composites.

Exfoliated graphite platelets (EGPs) have attracted extensive attention owing to their exceptional combinations of thermal conductivity and mechanical properties. Mechanical exfoliation is a facile and high-throughput approach to produce single-layer or few-layer graphite platelets. Herein, octadecylamine (ODA)-grafted EGP (ODA@EGP) and subsequent polyethylene/ODA@EGP (PE/ODA@EGP) composites with different contents of ODA@EGPs were successfully prepared ball-milling and melt-mixing methods, respectively.

Enhanced toughness and thermal conductivity for epoxy resin with a core-shell structured polyacrylic modifier and modified boron nitride.

A new epoxy-based composite with higher toughness and thermal conductivity was developed. First, a poly(-butyl acrylate)/poly(methyl methacrylate--glycidyl methacrylate) (PBMG) core-shell structured latex was prepared by seeded emulsion polymerization to toughen the epoxy resin (EP). Second, boron nitride particles were modified into nano-scale sheets and added to the epoxy/PBMG blend to improve the thermal conductivity of the resulting composite material.

Cyanate ester resin based composites with high toughness and thermal conductivity.

A new cyanate ester resin-based composite with higher toughness and thermal conductivity was developed. First, a poly(-butyl acrylate)/poly(methyl methacrylate--acrylamide) (PBMAM) core-shell structured latex was prepared by seeded emulsion polymerization. Second, hexagonal boron nitride (h-BN) particles were modified by a surface coupling agent, 3-(2-amino ethyl amino)propyl trioxysilane, to improve the dispersion in cyanate ester resin (BADCy).