Soybean protein adhesive, as an aldehyde-free biomass adhesive, has gained significant attention as an environmentally friendly material in recent years. It not only aligns with the objectives of the double carbon strategy but also contributes to the environmental protection strategy of reducing carbon emissions. And the functional modification of soybean protein adhesive and its wood composite hold great importance in expanding its application domains and meeting specialized requirements. This research focused on developing a robust, antistatic adhesive derived from soy protein as an alternative to formaldehyde-based resins, which represents a critical path in the advancement of wood-based composites that are free from formaldehyde and possess functional properties. However, ensuring the bonding strength of soy protein adhesive while developing antistatic adhesives and their wood-based composite materials is of great research value and challenge. Inspired by the organic-inorganic hybrid structure, this study aimed to prepare a strong and durable soy protein adhesive with excellent mechanical strength and multifunctionality by using a self-synthesized crosslinking agent called AP and the loaded two-dimensional MXene, which was stabilized in a dispersion of nanocellulose (CNC). The dry and wet shear strength of the resulting adhesive increased by 103.8 % and 113.8 % to 2.21 MPa and 1.24 MPa, indicating the stable crosslinking structure formed in adhesive system by the covalent bond between self-synthesized crosslinking agent AP and the carboxyl groups on proteins, as well as the hydrogen bond interactions between C-M and the proteins. Furthermore, the adhesive exhibited significant antistatic and self-extinguishing properties, with the particleboard modified by adhesive SPI/C-M/AP having a resistivity of 9.212 × 10 Ω cm. The resistivity decreased with increasing MXene content, providing potential applications for places such as school computer rooms and factory electronic equipment rooms. This breakthrough in multifunctional biomass-based adhesives and composite materials enriches the preparation of new types of biomaterials with antistatic and flame retardant properties.

中文翻译：

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用于木质复合材料的强力抗静电生物质粘合剂，具有静电放电保护功能


大豆蛋白胶粘剂作为一种无醛生物质胶粘剂，作为一种环保材料，近年来受到广泛关注。不仅契合双碳战略的目标，也为减少碳排放的环保战略做出了贡献。而大豆蛋白胶粘剂及其木质复合材料的功能改性对于拓展其应用领域、满足特殊要求具有重要意义。这项研究的重点是开发一种源自大豆蛋白的坚固抗静电粘合剂，作为甲醛基树脂的替代品，这代表了不含甲醛且具有功能特性的木质复合材料的发展的关键途径。然而，在开发抗静电粘合剂及其木质复合材料的同时，保证大豆蛋白粘合剂的粘合强度具有很大的研究价值和挑战。受有机-无机杂化结构的启发，本研究旨在通过使用自合成的交联剂AP和负载的二维MXene，制备一种坚固耐用的大豆蛋白粘合剂，具有优异的机械强度和多功能性，并将其稳定在纳米纤维素分散体（CNC）。所得胶粘剂的干剪切强度和湿剪切强度分别提高了103.8%和113.8%，达到2.21MPa和1.24MPa，表明自合成交联剂AP与蛋白质上的羧基之间形成了稳定的交联结构。 ，以及 C-M 和蛋白质之间的氢键相互作用。 此外，该胶粘剂还表现出显着的抗静电和自熄性能，经SPI/C-M/AP胶粘剂改性的刨花板电阻率为9.212×10 Ωcm。电阻率随着MXene含量的增加而降低，为学校机房、工厂电子设备房等场所提供了潜在的应用前景。这一多功能生物质基粘合剂和复合材料的突破丰富了具有抗静电和阻燃性能的新型生物材料的制备。