中国塑料 ›› 2024, Vol. 38 ›› Issue (4): 26-31.DOI: 10.19491/j.issn.1001-9278.2024.04.005

• 材料与性能 • 上一篇    下一篇

碱处理椰壳纤维织物对环氧树脂基材料拉伸性能影响研究

张青松, 李良勇(), 曹炜强, 程艳雯, 彭天祥, 王俊潼, 李后杨   

  1. 海南大学土木建筑工程学院,海口 570228
  • 收稿日期:2023-07-23 出版日期:2024-04-26 发布日期:2024-04-22
  • 通讯作者: 李良勇(1989—),男,副教授,从事加筋土结构与边坡支护、地基处理等方面的研究,liliangyong200@163.com
    E-mail:liliangyong200@163.com
  • 作者简介:第一联系人:地址:北京市海淀区阜成路11号《中国塑料》杂志社广告部
    邮编:100048
  • 基金资助:
    国家自然科学基金青年项目(42207190);海南省自然科学基金项目(122RC541);海南省自然科学基金项目(520RC549)

Effect of alkali⁃treated coir⁃geotextile on the tensile properties of epoxy resin⁃based materials

ZHANG Qingsong, LI Liangyong(), CAO Weiqiang, CHENG Yanwen, PENG Tianxiang, WANG Juntong, LI Houyang   

  1. College of Civil Engineering and Architect,Hainan University,Haikou 570228,China
  • Received:2023-07-23 Online:2024-04-26 Published:2024-04-22
  • Contact: LI Liangyong E-mail:liliangyong200@163.com

摘要:

为研究碱处理椰壳纤维织物对环氧树脂基材料拉伸性能的影响,本文采用氢氧化钠(NaOH)和碳酸氢钠(NaHCO3)两种碱溶液对椰壳纤维织物进行预处理,研究了不同浓度碱溶液和处理时长对椰壳纤维织物表面形貌的影响,并制备了以环氧树脂为基体的椰壳纤维织物。结果表明,经过5 % NaOH溶液环境处理6 h和在10 % NaHCO3溶液环境处理96~168 h的情况下,对环氧树脂基材料的拉伸性能增强效果表现出一致性,并且达到了最大值。通过对其微观和傅里叶变换红外光谱分析,随着碱处理时长的增加,椰壳纤维表面的轮廓逐渐显现出更清晰的特征,超过适宜处理时间,其表面呈现出更加粗糙的特征,伴随着更为明显的大面积腐蚀现象。纤维在10 %NaHCO3溶液环境中处理96~168 h时与5 %NaOH溶液处理6 h时表面出现了较为相似的现象,并且NaHCO3溶液不会对纤维表面的纤维素结构造成损伤,也不会显著增加纤维表面的粗糙度。

关键词: 椰壳纤维织物, 环氧树脂, 碱处理, 拉伸性能

Abstract:

To evaluate the effect of alkali treatment of coir⁃geotextile on the tensile properties of epoxy⁃based materials, two types of alkali solutions, NaOH and NaHCO3, were used for pretreating the coir⁃geotextile and the effects of alkali solution concentration and treatment time on the surface morphology of the coir⁃geotextile was investigated. The coir⁃geotextile with epoxy resin as a substrate was prepared. The results indicated that after the coir⁃geotextile was treated with 5 % NaOH solution for 6h and 10 % NaHCO3 solution for 96~168 h, the tensile enhancement effect on the epoxy⁃based materials presented good consistency, resulting in a maximum value. Based on the analysis of microstructure and FTIR, the surface contour of the coir fiber gradually showed more explicit characteristics with an increase in the treatment time with alkali solutions. Beyond the appropriate treatment time, the coir fiber showed a rougher surface, accompanied by a more apparent large⁃area corrosion phenomenon. The surface of coir fiber treated with 10 % NaHCO3 solution for 96~168 h is similar to that with 5 % NaOH solution for 6h. The treatment with an NaHCO3 solution did not damage the cellulose structure of the fiber surface and also did not increase the surface roughness of the fiber significantly.

Key words: coir?geotextile, epoxy resin, alkali treatment, tensile property

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