TY - JOUR
T1 - The effect of filler parameters on the healing of thermal conductivity and mechanical properties of a thermal interface material based on a self-healable organic-inorganic polymer matrix
AU - Zhong, Nan
AU - Garcia, Santiago J.
AU - Van Der Zwaag, Sybrand
PY - 2016/7/15
Y1 - 2016/7/15
N2 - Thermal interface materials (TIMs) are widely used in all kinds of electronic devices to handle the heat dissipation and the mechanical anchoring of the heat producing component. The aging of TIMs may lead to delamination and internal crack formation causing a loss of heat transfer and mechanical integrity both leading to premature device failure. In the present work, a novel TIM system based on a self-healing organic-inorganic polymer matrix filled with spherical glass beads is presented which is capable of healing both the thermal conductivity and the mechanical properties upon thermal activation. The effect of particle volume concentration (PVC) and particle size on tensile strength and thermal conductivity healing behavior is investigated. The results show that a higher PVC increases the mechanical property but decreases mechanical healing. For the same PVC, bigger particles lead to lower mechanical properties but higher thermal conductivities and higher mechanical healing efficiencies.
AB - Thermal interface materials (TIMs) are widely used in all kinds of electronic devices to handle the heat dissipation and the mechanical anchoring of the heat producing component. The aging of TIMs may lead to delamination and internal crack formation causing a loss of heat transfer and mechanical integrity both leading to premature device failure. In the present work, a novel TIM system based on a self-healing organic-inorganic polymer matrix filled with spherical glass beads is presented which is capable of healing both the thermal conductivity and the mechanical properties upon thermal activation. The effect of particle volume concentration (PVC) and particle size on tensile strength and thermal conductivity healing behavior is investigated. The results show that a higher PVC increases the mechanical property but decreases mechanical healing. For the same PVC, bigger particles lead to lower mechanical properties but higher thermal conductivities and higher mechanical healing efficiencies.
KW - fracture strength
KW - organic-inorganic networks
KW - self-healing polymers
KW - tetrasulfides
KW - thermal conductivity
KW - thermal interface materials
UR - http://www.scopus.com/inward/record.url?scp=84984649597&partnerID=8YFLogxK
U2 - 10.1088/0964-1726/25/8/084016
DO - 10.1088/0964-1726/25/8/084016
M3 - Article
AN - SCOPUS:84984649597
VL - 25
JO - Smart Materials and Structures
JF - Smart Materials and Structures
SN - 0964-1726
IS - 8
M1 - 084016
ER -