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

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Composites Communications Pub Date : 2023-02-01 DOI:10.1016/j.coco.2023.101498

Shengtao Dai , Longxuan Gao , Fei Yan , Jiaming Guo , Yanan Zhao , Yu Liu , Liu Liu , Yuhui Ao

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引用次数: 4

Abstract

A high solid content bio-based waterborne polyurethane (WPU) was designed by combination of anionic and nonionic monomers, and serving as sizing agent for carbon fibers (CF). The electric double layer was formed by using bio-based tartaric acid (TA) and sodium lignosulfonate (SL) as donor of ionic groups and electrostatic repulsion was generated. Polyethylene glycol (PEG) was used to provide the hydrophilic segment of non-ionic monomer, which reduced the interfacial tension and improved the dispersion of emulsion. The synergistic effect of anionic and nonionic monomers promoted the stability of emulsion and the solid content of WPU sizing agent was arrived at 57%. The effect of sizing agent to the interfacial properties of carbon fiber reinforced nylon 6 (CF/PA6) composites were investigated. The flexural strength and interlaminar shear strength (ILSS) of the CF/PA6 composites exhibited the optimal performance at 1.5 wt% sizing concentration, revealing a considerably increase of 39.8% in ILSS and 38.5% in flexural strength as compared with untreated CF composites. This work contribute a fascinating method for further high solid content commercial production of environmentally-friendly WPU sizing agent.

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阴离子和非离子单体对高固含量生物基水性聚氨酯施胶剂的协同作用

采用阴离子单体和非离子单体相结合的方法，设计了一种高固含量的生物基水性聚氨酯(WPU)，并将其作为碳纤维(CF)的施胶剂。以生物基酒石酸(TA)和木质素磺酸钠(SL)为离子基供体形成双电层，并产生静电斥力。采用聚乙二醇(PEG)作为非离子单体的亲水性段，降低了乳液的界面张力，提高了乳液的分散性。阴离子单体和非离子单体的协同作用提高了乳液的稳定性，WPU施胶剂的固含量达到57%。研究了施胶剂对碳纤维增强尼龙6 (CF/PA6)复合材料界面性能的影响。当浆料浓度为1.5 wt%时，CF/PA6复合材料的抗弯强度和层间剪切强度(ILSS)表现出最佳性能，与未处理的CF复合材料相比，ILSS和抗弯强度分别提高了39.8%和38.5%。本研究为环保型WPU施胶剂的高固含量商业化生产提供了有益的途径。

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.