A Mechanics Based Surface Image Interpretation Method for Multifunctional Nanocomposites
Artikel i vetenskaplig tidskrift, 2019

Graphene nanosheets and thicker graphite nanoplatelets are being used as reinforcement in polymeric materials to improve the material properties or induce new functional properties. By improving dispersion, de-agglomerating the particles, and ensuring the desired orientation of the nano-structures in the matrix, the microstructure can be tailored to obtain specific material properties. A novel surface image assisted modeling framework is proposed to understand functional properties of the graphene enhanced polymer. The effective thermal and mechanical responses are assessed based on computational homogenization. For the mechanical response, the 2-D nanoplatelets are modeled as internal interfaces that store energy for membrane actions. The effective thermal response is obtained similarly, where 2-D nanoplatelets are represented using regions of high conductivity. Using the homogenization simulation, macroscopic stiffness properties and thermal conductivity properties are modeled and then compared to the experimental data. The proposed surface image assisted modeling yields reasonable effective mechanical and thermal properties, where the Kapitza effect plays an important part in effective thermal properties.

Författare

Brina Blinzler

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Ragnar Larsson

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Karolina Gaska

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

Roland Kádár

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

Nanomaterials

20794991 (eISSN)

Vol. 9 11 1578-

Ämneskategorier

Polymerkemi

Textil-, gummi- och polymermaterial

Kompositmaterial och -teknik

Styrkeområden

Nanovetenskap och nanoteknik (2010-2017)

Produktion

Energi

Materialvetenskap

DOI

10.3390/nano9111578

PubMed

31703339

Mer information

Senast uppdaterat

2020-01-22