应用化学 ›› 2022, Vol. 39 ›› Issue (12): 1854-1861.DOI: 10.19894/j.issn.1000-0518.220051

• 研究论文 • 上一篇    下一篇

氧化有机溶剂木质素基亲水性上浆剂的制备及其在聚丙烯中的应用

张晨晨1, 刘昱含2, 赵文杰1, 刘佰军3, 孙昭艳4, 刘万利, 王艳淼, 呼微1,2()   

  1. 1.长春工业大学化学工程学院,长春 130012
    2.(东北师范大学化学学院,长春 130000) 3(吉林大学化学学院,长春 130012 )
    4.中国科学院长春应用化学研究所,高分子物理与化学国家重点实验室,长春 130022
    5.中科英华长春高技术有限公司,长春 130000
  • 收稿日期:2022-02-27 接受日期:2022-07-10 出版日期:2022-12-01 发布日期:2022-12-13
  • 通讯作者: 呼微
  • 基金资助:
    国家科技部重点专项(2021YFC2103600);国家自然科学基金面上项目(52073044);国家自然科学基金区域创新发展基金(U21A20330);吉林省科技厅重点研发项目(20220201124GX);吉林省发改委产业创新专项资金(2021C036-2);长春市科技局重点研发计划应用基础研究专项(21ZY32);长春新区2019年度“长白慧谷”英才计划高层次创新创业人才项目(9-2020004);中科院长春应用化学研究所国家高分子物理和化学重点实验室开放课题(2021-25)

Preparation of Oxidized Organosolv Lignin⁃based Hydrophilic Sizing Agent and Its Application in Polypropylene

Chen-Chen ZHANG1, Yu-Han LIU2, Wen-Jie ZHAO1, Bai-Jun LIU3, Zhao-Yan SUN4, Wan-Li LIU, Yan-Miao WANG, Wei HU1,2()   

  1. 1.School of Chemical Engineering,Changchun University of Technology,Changchun 130012,China
    2.College of Chemistry,Northeast Normal University,Changchun 130022,China
    3.Chemical College of Jilin University,Changchun 130012,China
    4.Changchun Institute of Applied Chemistry Chinese Academy of Sciences,State Key Laboratory of Polymer Physics and Chemistry,Changchun 130022,China
    5.Zhongke Kinhua Changchun High-Tech Company,Changchun 130022,China
  • Received:2022-02-27 Accepted:2022-07-10 Published:2022-12-01 Online:2022-12-13
  • Contact: Wei HU
  • About author:huw884@nenu.edu.cn
  • Supported by:
    the National Science and Technology Major Project(2021YFC2103600);the National Natural Science Foundation of China(52073044);the NSFC Regional Innovation and Development Funding(U21A20330);the Science and Technology Development Plan of Jilin Province, China(20220201124GX);Jilin Provincial Development and Reform Commission, China(2021C036-2);the Key R & D plan of Changchun Science and Technology Bureau(21ZY32);Changchun New Area "Changbai Huigu" Talent Project, China(9-2020004);the Open Research Fund of State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences(2021-25)

摘要:

碳纤维(Carbon fiber, CF)复合材料的界面相容性是决定复合材料综合性能的关键性因素,上浆剂在碳纤维与基体树脂之间发挥不可或缺的作用,环保亲水性上浆剂的制备是亟待解决的研究热点问题。本文对亲水性木质素基上浆剂及碳纤维增强聚丙烯(Polypropylene, PP)复合材料进行了研究,首先将木质素氧化处理增加活性基团,再与环氧基团反应制备氧化木质素基环氧树脂,然后与醇胺和羧酸反应,获得亲水性木质素基上浆剂,进一步加入3-氨丙基三乙氧基硅烷(KH550),以平衡上浆剂的吸湿性,最终制备一种稳定性优异的环保亲水性木质素基上浆剂(OLBEDK)。通过质量分数2.5%的OLBEDK处理的CF,毛丝量仅为3.0 mg; 复合材料的层间剪切强度(ILSS)、弯曲强度、弯曲模量和冲击强度与未上浆的CF增强PP复合材料相比,分别提高50.8%、34.2%、53.7%和127.8%,使CF/PP复合材料的综合性能显著提高。这归因于木质素的苯环与CF的碳六元环之间的π-π共轭作用,及KH550的烷基链与PP分子链之间发生物理缠绕,有效增强了CF与PP之间的界面相互作用。

关键词: 氧化, 木质素, 聚丙烯, 上浆剂, 碳纤维复合材料

Abstract:

The interfacial compatibility of carbon fiber (CF) reinforced composites is the key factor to determine the comprehensive properties of the composites. The sizing agent plays an indispensable role between carbon fibers and matrix resins. Environmentally friendly hydrophilic sizing agent is is a hot research issue to be solved. In this work, the hydrophilic lignin-based sizing agent and carbon fiber reinforced polypropylene (PP) composites are prepared and studied. The lignin is ozonized to increase the reactive group. The obtained lignin reacts with epoxy group to prepare the oxidized organic solvent lignin based epoxy resin (OLBE). OLBE reacts with alcohol amine and carboxylic acid to obtain the hydrophilic lignin-based sizing agent. KH550 is further added to balance the hygroscopicity of sizing agent. Finally, an oxidized organic solvent lignin-based hydrophilic sizing agent (OLBEDK) with excellent stability was prepared. The CF treated with 2.5% solid content OLBEDK was only 3.0 mg. The ILSS, Flexural strength, Flexural modulus and Impact strength of CF/PP composites are increased by 50.8%,34.2%, 53.7% and 127.8%, respectively, compared with those of CF/PP composites without sizing. This is attributed to the π-π conjugation between the benzene ring of lignin and the carbon six-membered ring of CF, and the physical entanglement between the alkyl chain of KH550 and the molecular chain of PP, which enhances the interfacial interaction between CF and PP effectively.

Key words: Oxidation, Lignin, Polypropylene, Sizing agent, Carbon fiber composite

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