Influence of hot pressing process on energy dissipation and residual strain characteristics of airship envelope material under cyclic stretching

doi:10.19936/j.cnki.2096-8000.20211128.009

Abstract

Abstract: In order to explore the influence mechanism of the process parameters of the hot-pressing compound on the energy dissipation and residual strain characteristics of the airship envelope material, the polyvinyl fluoride (PVF) film is used as the weather resistant layer, the TPU film as the helium barrier layer, and the polyarylate Vectran fiber woven plain weave as load-bearing layer, and the TPU film as the adhesive layer. The airship envelope materials with various hot-pressing process parameters were prepared by hot-pressing composite method, and the mechanical properties of airship envelope materials are tested and analyzed after cyclic loading-unloading. The influence of hot pressing temperature and hot pressing time on dissipation energy and residual strain is analyzed, and theoretical formulas are proposed. The results show that the hot-pressing temperature and hot-pressing time have the same influence on the energy dissipation and residual strain characteristics of the airship envelope materials, and the fitting degree of the fitting equation is good, and the coefficients are positively correlated with the hot-pressing temperature and hot-pressing time. The energy dissipation and residual strain characteristics of the materials show a two-stage linear characteristic, which is not only dependent on the hot pressing process, but also closely related to the times of cyclic loading and unloading. By comparing the dissipated energy and residual strain of the airship envelope materials prepared under different hot pressing process parameters after cyclic loading and unloading, the optimal preparation process was obtained as follows: Hot pressing temperature is 160 ℃, hot pressing time is 600 s.

Key words: airship envelope material, hot pressing process, cyclic stretching, energy dissipation, residual strain, composites

CLC Number:

TB332

GU Zhan-hua, SHAO Hui-qi, JIANG Jin-hua, CHEN Nan-liang. Influence of hot pressing process on energy dissipation and residual strain characteristics of airship envelope material under cyclic stretching[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(11): 54-61.

References

[1] 汪泽幸, 朱文佳, 何斌, 等. 单轴多级循环加载下聚氟乙烯膜材料的力学行为与能量耗散[J]. 纺织学报, 2019, 40(6): 20-26.
[2] IHAB E S, ZOUHEIR F, REDOUANE Z, et al. An investigation of the damage mechanisms and fatigue life diagrams of flax fiber-reinforced polymer laminates[J]. Journal of Materials Science, 2014, 49(5): 2338-2346.
[3] BETIANA A A, MARIA M R, NORMA E M. Creep and dynamic mechanical behavior of PP-jute composites: Effect of the interfacial adhesion[J]. Composites Part A: Applied Science and Manufacturing, 2007, 38(6): 1507-1516.
[4] HAO A, CHEN Y Z, CHEN J Y. Creep and recovery behavior of kenaf/polypropylene nonwoven composites[J]. Journal of Applied Polymer Science, 2014, 131(17): 8864-8874.
[5] 汪泽幸, 吴波, 何斌, 等. 循环荷载下黄麻/聚乙烯复合材料的残余变形演化与能量耗散特性[J]. 产业用纺织品, 2019, 37(10): 25-29, 42.
[6] 潘应熊, 董小燕, 李斌. 复合材料疲劳性能的能量耗散试验研究[J]. 强度与环境, 2009, 36(1): 51-56.
[7] 张成龙, 陈南梁, 耿奕, 等. 高密经编浮空器蒙皮材料的制备与力学行为研究[J]. 复合材料科学与工程, 2020(9): 42-47.
[8] 杜以军, 蒋金华, 陈南梁. Vectran纤维的热稳定性研究[J]. 玻璃钢/复合材料, 2014(4): 23-26.
[9] KOMOREK A, SZCZEPANIAK R, PRZYBYLEK P, et al. Properties of multi-layered polymer composites with Vectran fiber reinforcement[J]. Composite Structures, 2021, 256, 113045.
[10] 姜兆辉, 金梦甜, 郭增革, 等. 聚芳酯纤维的化学稳定性及其腐[J]. 纺织学报, 2019, 40(12): 9-15, 31.
[11] BALAGNA C, IRFAN M, PERERO S, et al. Antibacterial nanostructured composite coating on high performance Vectran fabric for aerospace structures[J]. Surface and Coatings Technology, 2019(373): 47-55.
[12] SHAPAAN M, SHABAAN E R, MOSTAFA A G. Study of the hyperfine structure, thermal stability and electric-dielectric properties of vanadium iron phosphate glasses[J]. Physica B: Physica of Condensed Matter, 2009, 404(14): 2058-2064.
[13] 李洪飞. 双向拉伸工艺对聚氟乙烯薄膜成型工艺与设备研究[D]. 北京: 北京化工大学, 2006.
[14] 王婧. 聚氟乙烯薄膜的制备工艺及性能研究[D]. 北京: 北京化工大学, 2007.
[15] 汪泽幸, 吴波, 李帅, 等. 循环应力松弛下黄麻织物/聚乙烯复合材料能量耗散演化规律[J]. 纺织学报, 2020, 41(10): 74-80.