TY - JOUR
T1 - A tough and efficient self-healing supramolecular materials modulated with WCNT-NH2
AU - Ma, H. R.
AU - Li, Y. X.
AU - Jiang, C.
AU - Yao, Y. W.
AU - Yao, C.
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2019
Y1 - 2019
N2 - Self-healing polymers crosslinked by solely reversible bonds are intrinsically weaker than common covalently crosslinked networks. In this work, a self-healing materials with excellent mechanical properties was synthesized by a new design strategy, wich is to introduce covalent into reversible networks to improve its mechanical properties. First, polyamidoamine dendrimer oligomers (PAMAM-Oligomers) was synthesized. Then amine functionalized carbon nanotubes (WCNT-NH2) reacted with PAMAM-Oligomers to form a polyamidoamine carbon nanotubes composite materials (PAMAM-WCNT-NH2). The synthesized materials behave as rubber and exhibit spontaneous self-healing behaviour at room temperature without external stimuli. The mechanical and self-healing properties are closely related to the content of WCNT-NH2. For 0.5wt% WCNT-NH2 in the materials, the strain of the material is 330% and tensile strength is 0.6 MPa. Importantly it can improve the self-healing efficiency to 98% of its original tensile strength in 2h.
AB - Self-healing polymers crosslinked by solely reversible bonds are intrinsically weaker than common covalently crosslinked networks. In this work, a self-healing materials with excellent mechanical properties was synthesized by a new design strategy, wich is to introduce covalent into reversible networks to improve its mechanical properties. First, polyamidoamine dendrimer oligomers (PAMAM-Oligomers) was synthesized. Then amine functionalized carbon nanotubes (WCNT-NH2) reacted with PAMAM-Oligomers to form a polyamidoamine carbon nanotubes composite materials (PAMAM-WCNT-NH2). The synthesized materials behave as rubber and exhibit spontaneous self-healing behaviour at room temperature without external stimuli. The mechanical and self-healing properties are closely related to the content of WCNT-NH2. For 0.5wt% WCNT-NH2 in the materials, the strain of the material is 330% and tensile strength is 0.6 MPa. Importantly it can improve the self-healing efficiency to 98% of its original tensile strength in 2h.
UR - http://www.scopus.com/inward/record.url?scp=85070306049&partnerID=8YFLogxK
U2 - 10.1088/1757-899X/544/1/012014
DO - 10.1088/1757-899X/544/1/012014
M3 - 会议文章
AN - SCOPUS:85070306049
SN - 1757-8981
VL - 544
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
IS - 1
M1 - 012014
T2 - 2nd International Conference on Mechanical Engineering and Applied Composite Materials, MEACM 2018
Y2 - 7 December 2018 through 8 December 2018
ER -