高硬度聚脲涂覆FRC复合结构抗冲击性能试验分析

Test analysis of anti-shock ability of high hardness polyurea-coated FRC composite structure

    摘要
  • 摘要:
      目的  为了分析玻璃纤维-芳纶（FRC）底材涂覆硬质聚脲的复合结构的抗冲击性能，
      方法  采用口径12.7 mm的弹道枪进行破片冲击加载，得到破片的弹道极限速度，分析获得不同工况下复合结构靶板的极限比吸收能。在此基础上，结合靶板的宏观破坏形貌，讨论2种不同聚脲涂覆复合结构的抗冲击性能的优劣性，并与软质聚脲涂覆复合结构进行对比，以验证涂覆硬质聚脲复合结构的最佳抗冲击性能。
      结果  研究表明，作为背弹面涂层时，软质聚脲涂覆复合结构的抗冲击性能较好；作为迎弹面涂层时，硬质聚脲涂覆复合结构的抗冲击性能较好；两种聚脲涂层作为迎弹面的复合结构抗冲击性均优于背弹面和双面复合结构。
      结论  在一般工程应用防护中，选用高硬度聚脲材料作为迎弹面涂层的防护效果更好。

     

    Abstract:
      Objectives  To analyze anti-shock ability of the composite structure whose base metal is coated with polyurea,
      Methods  we obtained ballistic limit velocity by using a 12.7 mm ballistic gun and obtained the limit specific absorption ability of the composite structure under different conditions. In addition, by examining the macroscopic damage form of target plate structure, we discussed the advantage and disadvantage of two different polyurea structures in terms of anti-shock ability. We also make comparison to soft polyurea composite structure to verify the optimum anti-shock performance of hard polyurea-coated composite structure.
      Results  The results show that the anti-shock ability of soft polyurea composite structure is the best when the polyurea coating is coated on the back of target; the anti-shock ability of hard polyurea composite structure is the best when the polyurea coating is coated on the front of target; furthermore, the anti-shock ability of the composite structure with the two types of polyuria coating as the front coating is better than when the coating is on the back surface and double-face structure.
      Conclusions  The high hardness polyurea can be used as the front protective coating for general engineering application which has the better protective effect.

     

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