Effect of Hard-Segment Structure on the Properties of Polyurethane/Poly(Ethyl Methacrylate) Damping Composites.

Jinbao Ma, Chi Ma, Risheng Long, Yan Jiang, Xingjia Wang, Chang Liu, Fan Li, Lee Tin Sin

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Article in Polymers, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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8 authors.

Jinbao MaSchool of Material Science and Engineering, Shenyang University of Chemical Technology, Shenyang Economic and Technological Development Zone, 11th Street, Shenyang 110142, China.ORCID 0009-0009-3930-1912

Chi MaSchool of Material Science and Engineering, Shenyang University of Chemical Technology, Shenyang Economic and Technological Development Zone, 11th Street, Shenyang 110142, China.ORCID 0000-0002-5127-0487

Risheng LongEquipment Reliability Institute, Shenyang University of Chemical Technology, Shenyang Economic and Technological Development Zone, 11th Street, Shenyang 110142, China.ORCID 0000-0001-5643-894X

Yan JiangSchool of Material Science and Engineering, Shenyang University of Chemical Technology, Shenyang Economic and Technological Development Zone, 11th Street, Shenyang 110142, China.

Xingjia WangSchool of Material Science and Engineering, Shenyang University of Chemical Technology, Shenyang Economic and Technological Development Zone, 11th Street, Shenyang 110142, China.

Chang LiuSchool of Material Science and Engineering, Shenyang University of Chemical Technology, Shenyang Economic and Technological Development Zone, 11th Street, Shenyang 110142, China.

Fan LiSchool of Health Management, China Medical University, Shenyang North New Area, No. 77 Puhe Road, Shenyang 110122, China.ORCID 0000-0002-0511-3536

Lee Tin SinDepartment of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Jalan Sungai Long, Bandar Sungai Long, Cheras, Kajang 43000, Malaysia.

Funding

China-Spain Joint Laboratory on Material Science 2022JH2/10700005"Da Biao Li Xiang" project of Shenyang University of Chemical Technology 512000001185Liao Ning Revitalization Talents Program XLYC1807007National Natural Science Foundation of China 52203271

6 · The paper itself

Abstract

Damping material performance influences the efficacy of vibration and noise reduction. However, traditional damping materials often have low damping peaks or narrow damping temperature ranges. In this study, a series of polyurethane (PU)/poly(ethylene methacrylate) (PEMA) composites were synthesised, in which the PU hard segments were varied using toluene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), isophorone diisocyanate (IPDI), and hexamethylene diisocyanate. The soft segments comprised tetrahydrofuran homopolymer glycol. The influence of the hard-segment structure on the properties of the PU/PEMA composites was investigated by infrared spectroscopy, thermogravimetric analysis, dynamic mechanical thermal analysis, and other experimental methods. The performance mechanism was explored from a molecular perspective via integration with molecular dynamics simulations. The PU/PEMA material with IPDI hard segments comprised numerous microphase-separated structures and exhibited greater free volume, fuller molecular-chain movement, and the highest damping performance, with a loss factor of 0.56. The PU/PEMA composites synthesised with TDI and MDI hard segments exhibited better compatibility, with the MDI-PU/PEMA system exhibiting a higher hydrogen-bonding force. This material also exhibited a higher thermal stability, with an initial breakdown temperature of 287.87 °C. This study provides a basis for regulating and optimising the performance of PU-based damping materials.

Indexed as

damping propertiesisocyanatemicrophase separationmolecular dynamics simulationpolyurethane

Identifiers

PMID40076127

DOI10.3390/polym17050636

PMCPMC11902803

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