TY - JOUR
T1 - Self-Healable Polymer Nanocomposites Capable of Simultaneously Recovering Multiple Functionalities
AU - Xing, Lixin
AU - Li, Qi
AU - Zhang, Guangzu
AU - Zhang, Xiaoshan
AU - Liu, Feihua
AU - Liu, Li
AU - Huang, Yudong
AU - Wang, Qing
N1 - Publisher Copyright:
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
PY - 2016/5/24
Y1 - 2016/5/24
N2 - The continuous evolution toward electronics with high power densities and integrated circuits with smaller feature sizes and faster speeds places high demands on a set of material properties, namely, the electrical, thermal, and mechanical properties of polymer dielectrics. Herein, a supramolecular approach is described to self-healable polymer nanocomposites that are mechanically robust and capable of restoring simultaneously structural, electrical, dielectric, and thermal transport properties after multiple fractures. With the incorporation of surface-functionalized boron nitride nanosheets, the polymer nanocomposites exhibit many desirable features as dielectric materials such as higher breakdown strength, larger electrical resistivity, improved thermal conductivity, greater mechanical strength, and much stabilized dielectric properties when compared to the pristine polymer. It is found that the recovery condition has remained the same during sequential cycles of cutting and healing, therefore suggesting no aging of the polymer nanocomposites with mechanical breakdown. Moreover, moisture has a minimal effect on the healing and dielectric properties of the polymer nanocomposites, which is in stark contrast to what is typically observed in the hydrogen-bonded supramolecular structures. Supramolecular polymer nanocomposites can be healed efficiently and repeatedly to fully recover multiple functionalities in addition to structural integrity. The introduction of surface-modified boron nitride nanosheets leads to the nanocomposites exhibiting superior mechanical strength, improved electrical resistivity, higher breakdown strength, enhanced thermal conductivity, and stabilized dielectric properties compared to the pristine polymer.
AB - The continuous evolution toward electronics with high power densities and integrated circuits with smaller feature sizes and faster speeds places high demands on a set of material properties, namely, the electrical, thermal, and mechanical properties of polymer dielectrics. Herein, a supramolecular approach is described to self-healable polymer nanocomposites that are mechanically robust and capable of restoring simultaneously structural, electrical, dielectric, and thermal transport properties after multiple fractures. With the incorporation of surface-functionalized boron nitride nanosheets, the polymer nanocomposites exhibit many desirable features as dielectric materials such as higher breakdown strength, larger electrical resistivity, improved thermal conductivity, greater mechanical strength, and much stabilized dielectric properties when compared to the pristine polymer. It is found that the recovery condition has remained the same during sequential cycles of cutting and healing, therefore suggesting no aging of the polymer nanocomposites with mechanical breakdown. Moreover, moisture has a minimal effect on the healing and dielectric properties of the polymer nanocomposites, which is in stark contrast to what is typically observed in the hydrogen-bonded supramolecular structures. Supramolecular polymer nanocomposites can be healed efficiently and repeatedly to fully recover multiple functionalities in addition to structural integrity. The introduction of surface-modified boron nitride nanosheets leads to the nanocomposites exhibiting superior mechanical strength, improved electrical resistivity, higher breakdown strength, enhanced thermal conductivity, and stabilized dielectric properties compared to the pristine polymer.
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U2 - 10.1002/adfm.201505305
DO - 10.1002/adfm.201505305
M3 - Article
AN - SCOPUS:84981765518
SN - 1616-301X
VL - 26
SP - 3524
EP - 3531
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 20
ER -