MW-CNTs/CTBN改性环氧及CFRP性能研究

发布时间：2022-11-05 18:07

　　碳纤维增强塑料（CFRP）是一种复合材料,其特点为强度和刚度较高,而且重量较轻,从而使其极前途。也是因为这些特性,越来越多结构材料使用CFRP,特别是在航天工业,其重量轻,而具有很强的结构完整性。与金属不同,复合材料具有各向异性特性,这意味着FRP在不同方向的行为取决于纤维增强效果而产生不同的结果,而大凡在X和?平面上,FRP是强的。当没有?平面加固,使?方向缺乏负载阻力,如冲击。但分层可能发生在层内,这严重降低了这些复合材料的性能,特别是抗压强度。由于用于基质的热固性材料（即环氧树脂）的性能,FRP复合材料也非常脆弱。基体的脆性不允许FRP消散冲击能量。因此,提高基体的韧性能够提高FRP从低能量冲击中吸收冲击能量的能力。为了提高抵抗低能冲击的分层能力,首先认为提高环氧树脂基体的韧性就会解决这件问题,还研究了断裂面的微结构以及增韧机理。新增橡胶改性环氧树脂也是一种提高韧性的方法,而建立了橡胶改性环氧树脂的基础。同时加入少量的橡胶,从而提高不稳定机械性能的韧性。近年来,对碳纳米管（CNTs）改性环氧树脂已经有许多科学家研究。CNTs具有较高的比强度和刚度,并且相信能够提高韧性而不降低环氧... 

【文章页数】：76 页

【学位级别】：硕士

【文章目录】：
详细摘要
Abstract
Chapter 1 Introduction
    1.1 Preface
    1.2 Review
        1.2.1 General Introduction to Composites
        1.2.2 Delamination and Impact resistance
    1.3 Epoxy Resin Toughening
        1.3.1 Toughened by CTBN
        1.3.2 Toughened by Carbon nanotubes
    1.4 Research Content
Chapter 2 Methodology
    2.1 Preface
    2.2 Fabrication
        2.2.1 Materials
        2.2.2 Production of CTBN and MW-CNTs modified epoxy resin
        2.2.3 Production of CFRP with binary modified epoxy
    2.3 Experimental test equipment
        2.3.1 Tensile Test
        2.3.2 Three-point bending
        2.3.3 Low energy impact
        2.3.4 Compression after Impact
        2.3.5 Optical Microscope
        2.3.6 Scanning Electron Microscopy
Chapter 3 Effect of CTBN and MW-CNTs on epoxy resin
    3.1 Preface
    3.2 Mechanical Properties
    3.3 The effect of CTBN on epoxy resin
        3.3.1 Tension property of CTBN modified Epoxy
        3.3.2 Flexural property of CTBN modified epoxy
        3.3.3 SEM imaging of CTBN modified epoxy
    3.4 The effect of MW-CNTs on epoxy resin
        3.4.1 Tension property of MW-CNTs modified epoxy
        3.4.2 Flexural property of MW-CNTs modified epoxy
        3.4.3 SEM imaging of pullout MW-CNTs
        3.4.4 SEM imaging of MW-CNTs agglomerate
    3.5 The effect of CTBN and MW-CNTs on epoxy resin
        3.5.1 Tension property of several modified epoxy
        3.5.2 Flexural property of several modified epoxy
        3.5.3 SEM imaging of several modified epoxy
    3.6 The effect of dispersing MW-CNTs on binary modified epoxy
        3.6.1 Tension property of binary modified epoxy
        3.6.2 Flexural property of binary modified epoxy
        3.6.3 SEM imaging of binary modified epoxy
    3.7 Summary
Chapter 4 Effect of CTBN and MW-CNTs on CFRP
    4.1 Preface
    4.2 Mechanical properties of CFRP
        4.2.1 Tension Property of CFRP
        4.2.2 Flexural Property of CFRP
    4.3 SEM Imaging of CFRP
    4.4 Low Energy Impact and Compression after Impact of CFRP
        4.4.1 Low energy impact
        4.4.2 Compression after Impact (CAI)
    4.5 Summary
Conclusion
References
Acknowledgement


【参考文献】：
期刊论文
[1]Microstructure and flexural properties of carbon/carbon composite with in-situ grown carbon nanotube as secondary reinforcement[J]. Hai Zhang,Lingjun Guo,Qiang Song,Qiangang Fu,Hejun Li,Kezhi Li.  Progress in Natural Science:Materials International. 2013(02)



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