2026-10-10T16:39:56Z
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2026-09-30T07:14:35Z
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High-Damping
Elastomers Enabled by Precise Regulation
of Polyborosiloxane Relaxation Behaviors
Fu-Long Gong (11766351)
Xiaotong Shu (25142319)
Wenqing Lv (23886729)
Shuang Long (10283751)
Bin Huang (331329)
Pingping Lou (2537491)
Xuezhong Zhang (3373427)
Hua-Feng Fei (4962982)
Zhijie Zhang (227551)
Space Science
Medicine
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
unique design concept
protective performance compared
pdms diol precursors
damping performance across
ultrawide frequency range
attenuate impact force
damping elastomers enabled
2 </ sup
5 – 0
damping polyborosiloxane
temperature range
impact loads
b –
δ </
− 20
systematic variation
precisely modulating
precise regulation
molecular weight
convenient method
convenient approach
commercial materials
bond content
95 %.
Viscoelastic polymer materials exhibiting high damping
capacity
within a specified frequency–temperature range effectively
dissipate mechanical energy as heat, thereby mitigating damage induced
by vibrations and impact loads. However, developing a convenient method
for precisely designing damping materials with tunable energy dissipation
properties across a desired frequency–temperature range remains
challenging. Herein, we present a strategy for fabricating high-damping
polyborosiloxane (PBS) elastomers (PBSEs) with tunable damping performance
across a specified frequency–temperature range. This is achieved
by precisely modulating the PBS relaxation behaviorspecifically,
through systematic variation of both the B–O bond content and
the molecular weight of the PDMS diol precursors. We found that the
resultant PBSEs exhibit controllable high-damping performance across
an ultrawide frequency range (tan <i>δ</i> > 0.3,
10<sup>–3</sup> to 10<sup>2</sup> Hz) and temperature range
(tan <i>δ</i> = 0.5–0.6, −20 to 150
°C). Moreover, PBSEs exhibit excellent impact-protective performance
compared with commercial materials and attenuate impact force by more
than 95%. This unique design concept will provide a convenient approach
to developing advanced damping materials.
2026-09-30T00:00:00Z
Dataset
Media
10.1021/acs.chemmater.6c02055.s002
https://figshare.com/articles/media/High-Damping_Elastomers_Enabled_by_Precise_Regulation_of_Polyborosiloxane_Relaxation_Behaviors/34030479
CC BY-NC 4.0