典型舰用复合材料DMA动态力学性能试验研究

玻璃钢/复合材料 ›› 2018, Vol. 0 ›› Issue (6): 66-72.

典型舰用复合材料DMA动态力学性能试验研究

杨国威, 梅志远, 李华东, 周军

海军工程大学舰船与海洋学院,武汉430033

收稿日期:2017-12-01 出版日期:2018-06-28 发布日期:2018-06-28
作者简介:杨国威(1994-),男,硕士,研究方向为舰船复合材料结构应用工程,ygw940912@hotmail.com。
基金资助:
国家自然科学基金资助项目(51609252)

EXPERIMENTAL STUDY ON DYNAMIC MECHANICAL PROPERTIESOF TYPICAL NAVAL SHIP COMPOSITE MATERIALS

YANG Guo-wei, MEI Zhi-yuan, LI Hua-dong, ZHOU Jun

Ship and Ocean Academy, Naval University of Engineering, Wuhan 430033, China

Received:2017-12-01 Online:2018-06-28 Published:2018-06-28

摘要/Abstract

摘要： 典型舰用复合材料体系以玻璃纤维(SW220(S2))、碳纤维(T700)等为增强纤维,乙烯基类(430LV、3201)树脂和环氧类(350)树脂等为基体,以其为研究对象,通过开展不同纤维和基体组成的纤维增强复合材料(FRP)动态热机械分析(DMA)试验,得到以上材料体系在不同温域和频域内的阻尼特性,并对树脂基体种类、铺层角度和增强纤维类型的影响规律进行分析。研究结果表明:树脂基体是影响FRP阻尼特性的主要因素,三种树脂基体中,tanδ_max(430LV)≈0.88,tanδ_max(3201)≈0.8,tanδ_max(350)≈0.7,常温段(0 ℃~30 ℃)损耗因子基本相同,约为0.05,加入纤维后,FRP的损耗因子下降至0.035左右,但储能模量提高了7倍~8倍;常温段,与0°/90°铺层方向相比,±45°铺层复合材料的损耗因子提高约0.025,储能模量下降6 GPa~8 GPa;0 ℃~30 ℃,与碳纤维增强复合材料(CFRP)相比,玻纤增强复合材料(GFRP)损耗因子是其两倍,但储能模量只有其1/3。实验频率从1 Hz增加到1000 Hz,FRP的损耗因子降低45%~70%,储能模量上升10%以内。

关键词: 纤维增强复合材料, 阻尼, 损耗因子, 时-温等效, 动态热机械分析

Abstract: A typical composite system used in naval ship was selected as the object of study, which include glass fiber (SW220(S2)) and carbon fiber (T700) as the reinforcing fiber, vinyl resin (430LV, 3201) and epoxy resin (350) as the matrix. Through the dynamic mechanical thermal analysis (DMA) test of Fiber Reinforced Polymer (FRP) with different fiber and matrix combination, the damping characteristics of the above materials system were obtained in different temperature and frequency, and the effect of fiber types, ply angle and resin matrix types were analyzed. The results show that the resin matrix is the main factor affecting the damping characteristics. In the three kinds of resin matrix, the tanδ_max(430LV)≈0.88, tanδ_max(3201)≈0.8, and tanδ_{max (350)}≈0.7. At 0 ℃~30 ℃, the loss factor of the resin matrix is about 0.05, and the loss factor of FRP is reduced to about 0.035 because of adding fiber, and the storage modulus is increased by 7 times~8 times. At 0 ℃~30℃, comparing with the composite whose fiber orientation is 0°/90°, the loss factor of composite with ±45° fiber orientation is increased by 0.02~0.03 and the storage modulus is decreased by 6 GPa~8 GPa. At 0 ℃~30 ℃, the loss factor of GFRP is 0.02 higher than that of the CFRP, but the storage modulus is 1/3. When the experimental frequency is increased from 1 Hz to 1000 Hz, the loss factor of FRP is decreased by 45%~70%, but the storage modulus is increased by less than 10%.

Key words: fiber reinforced polymer, damping, loss factor, time-temperature superposition, dynamic mechanical thermal analysis

中图分类号:

TB332

杨国威, 梅志远, 李华东, 周军. 典型舰用复合材料DMA动态力学性能试验研究[J]. 玻璃钢/复合材料, 2018, 0(6): 66-72.

YANG Guo-wei, MEI Zhi-yuan, LI Hua-dong, ZHOU Jun. EXPERIMENTAL STUDY ON DYNAMIC MECHANICAL PROPERTIESOF TYPICAL NAVAL SHIP COMPOSITE MATERIALS[J]. Fiber Reinforced Plastics/Composites, 2018, 0(6): 66-72.

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