TY - JOUR
T1 - Microporous-micronucleus composite structure endowing heterogenous polyamide 6 with low-temperature toughness, low dielectric constant, fire retardancy and antibacterial activity
AU - Feng, Haisheng
AU - Lu, Hongyu
AU - Geng, Zhishuai
AU - Li, Dinghua
AU - Yang, Rongjie
N1 - Publisher Copyright:
© 2023
PY - 2023/7/15
Y1 - 2023/7/15
N2 - Utilizing the difference in compatibility and phase transition among PA6, monoglyceride (MG), octaphenylsilsesquioxane (OPS) and zinc diethylphosphinate (ZDP), a PA6 composite with microporous-micronucleus structure is simulated and designed. Due to the passivation micro-cracks effect of microporous-micronucleus structure, the MG/OPS/ZDP/PA6 composite exhibits excellent low-temperature impact strength (5.58 kJ m−2, 203.3% higher than neat PA6 at −170 °C). The nano-gap and nano-cage OPS endows the MG/OPS/ZDP/PA6 with low dielectric constant (2.95 at 100 Hz). The thermal insulation effect of micropores and the synergistic effect of OPS and ZDP in the micronucleus lead to the high flame retardancy of MG/OPS/ZDP/PA6. Meanwhile, the MG on the inner surface of the micropore and the ZDP in the micronucleus endow a dual antibacterial activity. This work provides a guideline for the construction of microporous-micronucleus structure to realize the functional design of composite.
AB - Utilizing the difference in compatibility and phase transition among PA6, monoglyceride (MG), octaphenylsilsesquioxane (OPS) and zinc diethylphosphinate (ZDP), a PA6 composite with microporous-micronucleus structure is simulated and designed. Due to the passivation micro-cracks effect of microporous-micronucleus structure, the MG/OPS/ZDP/PA6 composite exhibits excellent low-temperature impact strength (5.58 kJ m−2, 203.3% higher than neat PA6 at −170 °C). The nano-gap and nano-cage OPS endows the MG/OPS/ZDP/PA6 with low dielectric constant (2.95 at 100 Hz). The thermal insulation effect of micropores and the synergistic effect of OPS and ZDP in the micronucleus lead to the high flame retardancy of MG/OPS/ZDP/PA6. Meanwhile, the MG on the inner surface of the micropore and the ZDP in the micronucleus endow a dual antibacterial activity. This work provides a guideline for the construction of microporous-micronucleus structure to realize the functional design of composite.
KW - A. Discontinuous reinforcement
KW - A. polymer-matrix composites (PMCs)
KW - B. Impact behaviour
KW - Flame retardancy
UR - http://www.scopus.com/inward/record.url?scp=85159550431&partnerID=8YFLogxK
U2 - 10.1016/j.compositesb.2023.110808
DO - 10.1016/j.compositesb.2023.110808
M3 - Article
AN - SCOPUS:85159550431
SN - 1359-8368
VL - 261
JO - Composites Part B: Engineering
JF - Composites Part B: Engineering
M1 - 110808
ER -