Functionalized Aluminum Nitride for Improving Hydrolysis Resistances of Highly Thermally Conductive Polysiloxane Composites

Abstract A series of divinylphenyl-acryloyl chloride copolymers (PDVB- co -PACl) is synthesized via atom transfer radical polymerization employing tert-butyl acrylate and divinylbenzene as monomers. PDVB- co -PACl is utilized to graft on the surface of spherical aluminum nitride (AlN) to prepare functionalized AlN (AlN@PDVB- co -PACl). Polymethylhydrosiloxane (PMHS) is then used as the matrix to prepare thermally conductive AlN@PDVB- co -PACl/PMHS composites with AlN@PDVB- co -PACl as fillers through blending and curing. The grafting of PDVB- co -PACl synchronously enhances the hydrolysis resistance of AlN and its interfacial compatibility with PMHS matrix. When the molecular weight of PDVB- co -PACl is 5100 g…

• NU
  Northwestern University
• NN
  National Natural Science Foundation of China

  Awards: 52403112, 52473083
• NP
  Northwestern Polytechnical University

  Award: CX2024094
• NS
  Natural Science Foundation of Chongqing

  Award: 2023NSCQ-MSX2547
• FR
  Fundamental Research Funds for the Central Universities

  Awards: D5000240077, D5000240067