Synergistic of anionic and nonionic monomers for high solid content bio-based waterborne polyurethane sizing agents

Dai, Shengtao; Gao, Longxuan; Yan, Fei; Zhao, Yong; Liu, Yu; Liu, Liu; Ao, Yuhui

doi:10.1016/j.coco.2023.101498

Composites Communications

2023

DOI: 10.1016/j.coco.2023.101498

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Synergistic of anionic and nonionic monomers for high solid content bio-based waterborne polyurethane sizing agents

Shengtao Dai

Longxuan Gao

Fei Yan

et al.

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Cited by 11 publications

References 23 publications

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Engineered Functional Segments Enabled Mechanically Robust, Intrinsically Fire‐Retardant, Switchable, Degradable PolyureThane Adhesives

Xue,

Zhang,

Huo

et al. 2024

Adv Funct Materials

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Adhesives are being used ubiquitously, such as automotive, building, electronics, and beyond. Due to the lack of rational design strategies, they have yet to achieve a performance portfolio: mechanically robust, highly adhesive, fire‐retardant, switchable, and sustainable (e.g., biobased, reusable, biodegradable) to ensure their practical applications. Herein, a fire‐retardant phosphorus‐containing pimaric acid bio‐derivative, AD, as functional segments, is rationally engineered to prepare biobased polyurethane (PU) adhesive that realizes such an integrated performance portfolio. Because of dynamic hydrogen‐bonding and π–π stacking of polar AD, the as‐prepared PU adhesive exhibits an ultrahigh adhesion force of 38.8 N cm–1. As‐prepared adhesive can be readily reused benefiting from its good solubility in ethanol and exhibits temperature‐responsive switchable adhesion without degraded adhesion. Also, the adhesive shows intrinsic fire retardance due to its biphasic modes of action. The labile ester bonds in the structure enable the adhesive to completely degrade in the presence of lipase or dilute acid. Further demonstration of its promising applications as an adhesive for nanocomposite heat dissipators shows superior dissipating efficiencies to commercial heat sinks. This work offers a novel design approach for creating next‐generation sustainable high‐performance adhesives with functional integration and circular life cycles, which are anticipated to find extensive real‐world applications.

show abstract

Engineered Functional Segments Enabled Mechanically Robust, Intrinsically Fire‐Retardant, Switchable, Degradable PolyureThane Adhesives

Xue,

Zhang,

Huo

et al. 2024

Adv Funct Materials

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Bio‐based semi‐aromatic waterborne PIEK‐C sizing agent to construct a robust interface for CF/PEEK composites

Xie,

Zhuang,

Pei

et al. 2024

Polymer Composites

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Despite the impressing advances on sizing agents for CF/PEEK composites, the aromatic backbone of the polymer precursors utilized in the vast majority of reports compromises the dispersity and ductility of the slurry, subsequently resulting in inferior overall performance of the composites. Meanwhile, most resins employed for sizing agents in existing reports are based on petroleum resources. Herein, a bio‐based waterborne sizing agent utilizing semi‐aromatic poly ether ketones (PIEK‐C) derived from isosorbide and phenolphthalein has been disclosed, featured by its salutary dispersity, exceptional thermal stability, higher glass transition temperatures, and broader applicability. Due to the structural similarity between the sizing and resin matrix, the protocol endowed CF/PEEK composites with ameliorated overall performance, addressing issues related to inadequate adhesion of CF with PEEK resin, as well as environmental pollution commonly associated with existing commercial epoxy and solvent‐based sizing agents. The Tg and T5% of PIEK‐C‐5050 were 205.08 and 427.16°C, respectively. The particle size range of the PIEK‐C sizing agents spanned from 66.32 to 84.63 nm. The flexural strength and interlaminar shear strength of the composites experienced a respective 993.92 MPa (30.73%) and 83.32 MPa (36.97%) increase compared to untreated CF/PEEK composites following sizing treatment with PIEK‐C‐5050, underscoring expedient intermolecular interactions based on comparable solubility and π‐π stacking effects between the PEEK and PIEK‐C components. This study introduced an efficient and eco‐friendly approach to enhance the interfacial properties of CF/PEEK composites.Highlights PIEK‐C resin is employed for the first time to prepare carbon fiber sizing agents. The PIEK‐C sizing agent significantly fortified the surface energy and wettability of carbon fibers. The CF/PEEK composites after treatment with PIEK‐C sizing agent showed excellent heat resistance. The ILSS and bending strength of the composites were significantly increased by 36.97% and 30.73%, respectively.

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Preparation of high-solid, low-viscosity waterborne polyurethane: based on multiparticle size composite emulsification

Lou,

Li,

Cao

et al. 2023

J Coat Technol Res

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Synergistic of anionic and nonionic monomers for high solid content bio-based waterborne polyurethane sizing agents

Cited by 11 publications

References 23 publications

Engineered Functional Segments Enabled Mechanically Robust, Intrinsically Fire‐Retardant, Switchable, Degradable PolyureThane Adhesives

Engineered Functional Segments Enabled Mechanically Robust, Intrinsically Fire‐Retardant, Switchable, Degradable PolyureThane Adhesives

Bio‐based semi‐aromatic waterborne PIEK‐C sizing agent to construct a robust interface for CF/PEEK composites

Preparation of high-solid, low-viscosity waterborne polyurethane: based on multiparticle size composite emulsification

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