Improved damping and mechanical properties of carbon fibrous laminates with tailored carbon nanotube/polyurethane hybrid membranes
Improved damping and mechanical properties of carbon fibrous laminates with tailored carbon nanotube/polyurethane hybrid membranes
复制标题
采用定制碳纳米管/聚氨酯杂化膜改善碳纤维层压板的阻尼和机械性能
DOI：
10.1177/0967391120962998
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发表时间：
2020-10-14
影响因子：
2.1
通讯作者：
Liu, Ling
中科院分区：
文献类型：
--
作者：
Ouyang, Qin;Wang, Xiaohong;Liu, Ling
本文设计了两种阻尼夹层，即传统的热塑性聚氨酯（TPU）和新型的碳纳米管（CNT）改性TPU多孔膜，并分别嵌入碳纤维增强塑料（CFRP）的界面。对比研究了插入层对CFRP阻尼性能和准静态力学性能的影响。结果表明，TPU和CNT/TPU交错碳纤维复合材料在50~150 ° C的温度范围内和0.1~30 Hz的频率范围内均具有良好的阻尼性能，其中TPU的阻尼性能稍好。但是，在不同的温度和频率下，CNT/TPU交织CFRP的储能模量总是高于TPU交织CFRP的储能模量。另外，与CFRP基体相比，TPU夹层CFRP的弯曲强度和层间剪切强度分别降低了36.0%和24.0%，CNT/TPU夹层CFRP的弯曲强度和层间剪切强度分别降低了20.0%和17.8%，说明CNT/TPU夹层对CFRP的力学性能影响较小。相比之下，CNT/TPU交织CFRP具有更好的阻尼特性和合理的力学性能，在结构-功能复合材料领域，尤其是在减震降噪领域具有更大的应用潜力。
This paper design two kinds of damping interleaves, traditional thermoplastic polyurethane (TPU) and novel carbon nanotube (CNT) modified TPU porous membranes are designed and respectively interleaved into the interfaces of a carbon fiber-reinforced plastic (CFRP). How the interleaves affect the damping behaviors and quasi-static mechanical properties of the CFRP is comparatively investigated. Results show that both TPU and CNT/TPU interleaved CFRPs possess good damping behaviors within a wide temperature range of 50∼150°C as well as a wide frequency band from 0.1 to 30 Hz, where, the former is a little better. But, storage modulus of the CNT/TPU interleaved CFRP is always higher than that of the TPU interleaved CFRP at different temperatures and frequencies. Moreover, the flexural strength and interlaminar shear strength are both decreased by 36.0% and 24.0% for the TPU interleaved CFRP, and 20.0% and 17.8% for the CNT/TPU interleaved CFRP, respectively, when compared to the baseline CFRP, suggesting the CNT/TPU interleaf brings less negative effect on the mechanical properties of CFRP. Comparatively, CNT/TPU interleaved CFRP is more multifunctional, possessing good damping feature and reasonable mechanical properties, which is maybe more potential in the structural-functional field, especially where needs shock absorption and noise reduction.