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- W4376140582 abstract "With the increasing demand for high-performance damping rubber material in various fields, improving the damping performance of existing nonpolar rubber has garnered tremendous scientific and industrial interest. However, it remains a long-standing challenge to improve the damping properties of nonpolar rubber materials due to their low intrinsic glass transition temperature (Tg) and incompatible surface energy with high-damping polar polymers or fillers. To solve this conundrum, ultra-low gel multifunctional carboxy-functional high vinyl polybutadiene HVBR (HVBR/COOH-x%) was prepared by grafting 3-mercaptopropionic acid (3PMA) onto HVBR via thiol−ene photo−click. The effects of reaction parameters including molecular weight, 1,2-vinyl content, photoinitiators, reaction time, thiol and photoinitiator dosage on gel content and carboxyl grafting ratio were investigated. The HVBR/COOH-x% demonstrate a controllable grafting ratio range from 2% to 73%. Furthermore, the increased Tg and intermolecular force resulted in excellent performance, including high-glass transition temperature of 26.3°C, tensile strength of 15.52 MPa, and elongation at break of 396.16%. Particularly with a wide range of effective damping temperatures above 46.6°C. Meanwhile, COOH endowed the HVBR with better self-viscosity, but also equipped it with stronger mutual viscosity. Therefore, this experiment proposes a feasible path to high damping and high adhesion in nonpolar rubber materials." @default.
- W4376140582 created "2023-05-12" @default.
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- W4376140582 date "2023-05-10" @default.
- W4376140582 modified "2023-09-25" @default.
- W4376140582 title "High‐damping ultralow−gel nonpolar elastomeric polymer through thiol−ene photo−click chemistry reaction" @default.
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- W4376140582 doi "https://doi.org/10.1002/app.53993" @default.
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