TY - JOUR
T1 - A self-healing flexible sensor based on silicone rubber with synergistic effect of coordination and hydrogen bonds
AU - Chai, Xin
AU - Fei, Fan
AU - Lu, Wentong
AU - Zhou, Peilong
AU - Duojie, Danzhen
AU - Wang, Jincheng
N1 - Publisher Copyright:
© The Author(s) 2025.
PY - 2025/5
Y1 - 2025/5
N2 - With the development of society, silicone rubber-based flexible sensors are frequently used in our daily life, such as monitoring people's physical health, tracking movement and activities, and improving rehabilitation processes. However, high-frequency use can also compromise the material structure and even impair the service life of the product. In this study, a novel type of self-healing flexible sensing material, PBDMS/PDMS/mMWCNTs, was prepared by first preparing polyborosiloxane (PBDMS) with boric acid and hydroxyl silicone oil, and then mixing it with 107 room temperature curing silicone rubber (PDMS) as a matrix and using silane coupling agent KH560 modified multi-walled carbon nanotubes (mMWCNTs) as fillers. PBDMS/PDMS/mMWCNT was constructed to form a dynamic crosslinked network, resulting in a high self-healing efficiency (up to 80% in 4 h at room temperature). mMWCNTs, on the other hand, reinforced the mechanical properties (tensile strength of 0.46 MPa and elongation at break of 120%) better than the most commonly used reinforcing agent in the industry, SiO2 nanoparticles. At the same time, mMWCNTs dropped on both ends of the surface of the substrate, and the internal network formed a ‘sandwiched’ structure, which can endow the composite with excellent thermal conductivity and electrical conductivity.
AB - With the development of society, silicone rubber-based flexible sensors are frequently used in our daily life, such as monitoring people's physical health, tracking movement and activities, and improving rehabilitation processes. However, high-frequency use can also compromise the material structure and even impair the service life of the product. In this study, a novel type of self-healing flexible sensing material, PBDMS/PDMS/mMWCNTs, was prepared by first preparing polyborosiloxane (PBDMS) with boric acid and hydroxyl silicone oil, and then mixing it with 107 room temperature curing silicone rubber (PDMS) as a matrix and using silane coupling agent KH560 modified multi-walled carbon nanotubes (mMWCNTs) as fillers. PBDMS/PDMS/mMWCNT was constructed to form a dynamic crosslinked network, resulting in a high self-healing efficiency (up to 80% in 4 h at room temperature). mMWCNTs, on the other hand, reinforced the mechanical properties (tensile strength of 0.46 MPa and elongation at break of 120%) better than the most commonly used reinforcing agent in the industry, SiO2 nanoparticles. At the same time, mMWCNTs dropped on both ends of the surface of the substrate, and the internal network formed a ‘sandwiched’ structure, which can endow the composite with excellent thermal conductivity and electrical conductivity.
KW - flexible sensing materials
KW - multiple dynamic key networks
KW - self-healing
KW - silicone material
UR - http://www.scopus.com/inward/record.url?scp=105004918302&partnerID=8YFLogxK
U2 - 10.1177/14658011251326163
DO - 10.1177/14658011251326163
M3 - 文章
AN - SCOPUS:105004918302
SN - 1465-8011
VL - 54
SP - 96
EP - 107
JO - Plastics, Rubber and Composites
JF - Plastics, Rubber and Composites
IS - 3-4
ER -