Effects of structural symmetry of introduced polyether diol on low temperature tolerance of laminated polyurethane bearings in bridges

Xu, Xiaoxing; Yuan, Yong; Wang, Siqi; Zhang, Dehong; Zhu, Hongping

doi:10.1016/j.conbuildmat.2023.132688

Cited by 4 publications

(2 citation statements)

References 47 publications

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“…On the other hand, biobased polyether polyols are mainly derived from vegetable oils, such as castor oil, soybean oil, jatropha oil, cottonseed oil, and palm oil. , The above-mentioned polyether polyols are mostly aliphatic polyether polyols. Aromatic ring-containing polyether polyols can confer better mechanical, low-temperature resistance, and other comprehensive properties to polyurethanes. However, there are a few reports on biobased aromatic ring polyether polyols.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of a Biobased Furanic Polyoxime Ether Polyol for the Synthesis of Intrinsically Antimicrobial Poly(Oxime-Urethane)

Dai,

Ding,

et al. 2024

ACS Sustainable Chem. Eng.

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Antimicrobial polyurethanes have great potential for application in pathogen protection and antifouling coatings. In this study, we developed an intrinsically antimicrobial poly(oximeurethane) (POU). First, a polyoxime ether polyol (PoEP) was prepared by etherifying biobased 2,5-diformylfuran dioxime (DFFD) and ethylene glycol (EG). POUs (POU-30, POU-40, POU-50, and POU-60) with varying oxime content from the PoEP were synthesized using 4,4-diisocyanate dicyclohexylmethane (HMDI) and polytetrahydrofuran (PTMG-650). Tensile strengths (elongation at break) range from 2.20 MPa (1267%) to 6.64 MPa (72%). The corresponding glass transition temperature (T g ) ranges from 10.95 to 52.00 °C, and the lowest decomposition temperature (T d,5% ) is 265 °C. When the oxime ester bond (−CH�N−O− CO−) from the PoEP was incorporated at a concentration of 10.21 wt %, the POU exhibited 100% antibacterial activity against Escherichia coli and Staphylococcus aureus. These results suggest that the PoEP has potential as a renewable polyurethane polyol with excellent antimicrobial properties, making it a promising solution for synthesizing long-lasting and intrinsically antimicrobial polyurethanes.

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Section: Introductionmentioning

confidence: 99%

“…14,15 The above-mentioned polyether polyols are mostly aliphatic polyether polyols. Aromatic ring-containing polyether polyols can confer better mechanical, 16 low-temperature resistance, 17 and other comprehensive properties to polyurethanes. However, there are a few reports on biobased aromatic ring polyether polyols.…”

Section: ■ Introductionmentioning

confidence: 99%

Evaluation of a Biobased Furanic Polyoxime Ether Polyol for the Synthesis of Intrinsically Antimicrobial Poly(Oxime-Urethane)

Dai,

Ding,

et al. 2024

ACS Sustainable Chem. Eng.

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Polyurethane‐based cross‐linked nano spheres and their application in toughening epoxy resin

Shi,

Li,

Song

et al. 2024

J of Applied Polymer Sci

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Toughening thermo‐setting resins with both high impact strength and tensile strength is a challenging issue. In this study, a novel cross‐linked polyurethane nano spheres for toughening epoxy resin were prepared by self‐emulsification method with hexamethylene diisocyanate trimer (HDI trimer) and diethylene triamine (DETA) as the crosslinkers. The structure, morphology and particle size of cross‐linked polyurethane nano spheres were investigated by infrared spectroscopy, laser particle size analyzer and scanning electron microscopy. Results showed that the prepared cross‐linked polyurethane nano spheres showed spherical shape and had the size in the range from 40 to 258 nm. The application of cross‐linked polyurethane nano spheres in toughing epoxy resin was investigated. The results showed that cross‐linked polyurethane nano spheres can be uniformly dispersed in epoxy resin and no obvious aggregation phenomenon was observed. And the tensile strength and impact strength of epoxy resin can be increased simultaneously when the cross‐linked polyurethane nano spheres were used in toughening epoxy resin. With the increase of the amount of polyurethane nano spheres in epoxy resin, both the tensile strength and impact strength of epoxy resin had the trend of first increase and then decrease. The amount of HDI trimer in the microspheres had a great impact on their toughening effect on epoxy resin. When the cross‐linked polyurethane nano spheres contained HDI trimer content of 12 wt% and the amount of the nano spheres in epoxy resin was 8 wt%, the impact strength of the epoxy resin can reach as high as 23 kJ/m2, which was 4.33 times that of pristine epoxy resin. And the tensile strength of toughened epoxy resin was 50.7 MPa, which was at same level of that of pristine epoxy resin. The results of this study indicate that the cross‐linked polyurethane nano spheres have a great potential in toughening thermo setting resins, such as epoxy resin.

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Synergistic enhancement of low-temperature strength and toughness in poly(boron-urethane) elastomers via π-π stacking and hydrogen bonding

Yang,

Cao,

Dou

et al. 2025

Chemical Engineering Journal

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Effects of structural symmetry of introduced polyether diol on low temperature tolerance of laminated polyurethane bearings in bridges

Cited by 4 publications

References 47 publications

Evaluation of a Biobased Furanic Polyoxime Ether Polyol for the Synthesis of Intrinsically Antimicrobial Poly(Oxime-Urethane)

Evaluation of a Biobased Furanic Polyoxime Ether Polyol for the Synthesis of Intrinsically Antimicrobial Poly(Oxime-Urethane)

Polyurethane‐based cross‐linked nano spheres and their application in toughening epoxy resin

Synergistic enhancement of low-temperature strength and toughness in poly(boron-urethane) elastomers via π-π stacking and hydrogen bonding

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