中国塑料 ›› 2024, Vol. 38 ›› Issue (11): 81-86.DOI: 10.19491/j.issn.1001-9278.2024.11.014

• 加工与应用 • 上一篇    下一篇

连续碳纤维增强聚酰胺6复合材料拉板的制备与性能研究

宋泽明1(), 万建成1, 郝玉靖1, 王帆2, 周威1, 彭飞1   

  1. 1.国网电力工程研究院有限公司,北京 100055
    2.国网甘肃省电力公司建设分公司,兰州 730030
  • 收稿日期:2024-02-23 出版日期:2024-11-26 发布日期:2024-11-21
  • 作者简介:宋泽明(1987—),男,高级工程师,从事输电线路新型复合材料应用、检测及施工技术研究,619049358@qq.com
  • 基金资助:
    国家电网有限公司科技项目资助(5200?202333154A?1?1?ZN)

Preparation and performance of continuous carbon fiber reinforced polyamide 6 composite tensile rod

SONG Zeming1(), WAN Jiancheng1, HAO Yujing1, WANG Fan2, ZHOU Wei1, PENG Fei1   

  1. 1.State Grid Electric Power Engineering Research Institute,Beijing 100055,China
    2.State Grid GanSu Electric Power Company Power Grid Construction Division,Lanzhou 310014,China
  • Received:2024-02-23 Online:2024-11-26 Published:2024-11-21

摘要:

采用连续碳纤维增强聚酰胺6预浸料通过缠绕⁃模压成型工艺制备复合材料拉板。采用自制的拉伸工装对复合材料拉板的拉伸性能进行评测,研究其破坏形式及失效机制。研究发现,增加模压成型压力可以减少复合材料中的孔隙,使孔隙缩小,减少内部缺陷,使结构更致密,提高拉板的拉伸强度。未加套环拉板拉伸破坏位置在其端部,外层纤维被拉塌劈裂,只有内层纤维一直起作用直至被拉断,拉伸强度较低。加套环拉板拉伸破坏位置是在侧面靠近轴套位置,纤维是拉断破坏,断裂截面比较平齐;整个拉伸过程中,套环的横向约束使所有纤维都能够很好地发挥抗拉作用,使其具有较高的拉伸强度。

关键词: 碳纤维复合材料, 聚酰胺6, 拉板, 缠绕?模压, 拉伸性能

Abstract:

Continuous carbon⁃fiber⁃reinforced polyamide 6 prepreg was used to prepare a composite pull rod through a winding⁃molding process. The tensile properties of the composite pull rod were evaluated by using a self⁃made tensile tool, and its failure mode and failure mechanism were studied. The results indicated that increasing the molding pressure could reduce the pores in the composite as well as the internal defects, make the structure more compact, and improve the tensile strength of the pull rod. The composite pull rod without a collar showed a tensile failure position at its end, and the outer fiber was pulled and split. Only the inner fiber worked until it was pulled and broken. In this case, the tensile strength was low. The composite pull rod with a collar showed a tensile failure position close to the shaft sleeve on the side. The fiber was broken, and the fracture section was relatively flush. During the whole tensile process, the transverse restraint of the collar enabled all fibers to play a good tensile role, resulting in higher tensile strength.

Key words: carbon fiber composite, polyamide 6, pull rod, winding?molding, tensile property

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