PMID- 36679304
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230202
IS  - 2073-4360 (Electronic)
IS  - 2073-4360 (Linking)
VI  - 15
IP  - 2
DP  - 2023 Jan 13
TI  - Dynamic Response and Deformative Mechanism of the Shape Memory Polymer Filled 
      with Low-Melting-Point Alloy under Different Dynamic Loads.
LID - 10.3390/polym15020423 [doi]
LID - 423
AB  - Low-melting-point alloy (LMPA) was used as an additive to prepare 
      epoxy-resin-based shape memory polymer composites (LMPA/EP SMP), and dynamic 
      mechanical analyzer (DMA) tests were performed to demonstrate the shape memory 
      effect, storage modulus, and stiffness of the composites under different load 
      cases. The composites exhibited an excellent shape recovery ratio and shape 
      fixity ratio, and a typical turning point was observed in the storage modulus 
      curves, which was attributed to the melting of the LMPA. In order to investigate 
      the dynamic deformation mechanism at high strain rates, split Hopkinson pressure 
      bar (SHPB) experiments were performed to study the influence of the strain rate 
      and plastic work on the dynamic mechanical response of LMPA/EP composites. The 
      results showed that there was a saturated tendency for the flow stress with 
      increasing strain rate, and the composites exhibited a typical brittle failure 
      mode at high strain rate. Moreover, an obvious melting phenomenon of the LMPA was 
      observed by SEM tests, which was due to the heat generated by the plastic work at 
      high strain rate. The fundamental of the paper provided an effective approach to 
      modulate the stiffness and evaluate the characteristics of SMP composites.
FAU - Wang, Huanhuan
AU  - Wang H
AUID- ORCID: 0000-0003-0694-0821
AD  - School of Mechanical Engineering, Hebei University of Technology, Tianjin 300104, 
      China.
FAU - Zhang, Yongqiang
AU  - Zhang Y
AD  - Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 
      621900, China.
FAU - Tan, Zhuhua
AU  - Tan Z
AD  - School of Mechanical Engineering, Hebei University of Technology, Tianjin 300104, 
      China.
LA  - eng
GR  - 12272121/National Natural Science Foundation of China/
GR  - 2019-JCJQ-ZD-142-00/National key basic research project for basis strengthen 
      programme/
PT  - Journal Article
DEP - 20230113
PL  - Switzerland
TA  - Polymers (Basel)
JT  - Polymers
JID - 101545357
PMC - PMC9865720
OTO - NOTNLM
OT  - deformation mechanism
OT  - dynamic mechanical properties
OT  - high strain rate
OT  - low-melting-point alloy
OT  - shape memory polymer
COIS- The authors declare that they have no known competing financial interests or 
      personal relationships that could have appeared to influence the work reported in 
      this paper.
EDAT- 2023/01/22 06:00
MHDA- 2023/01/22 06:01
PMCR- 2023/01/13
CRDT- 2023/01/21 01:53
PHST- 2022/11/30 00:00 [received]
PHST- 2023/01/03 00:00 [revised]
PHST- 2023/01/06 00:00 [accepted]
PHST- 2023/01/21 01:53 [entrez]
PHST- 2023/01/22 06:00 [pubmed]
PHST- 2023/01/22 06:01 [medline]
PHST- 2023/01/13 00:00 [pmc-release]
AID - polym15020423 [pii]
AID - polymers-15-00423 [pii]
AID - 10.3390/polym15020423 [doi]
PST - epublish
SO  - Polymers (Basel). 2023 Jan 13;15(2):423. doi: 10.3390/polym15020423.