基于DMA法的新型黏弹性材料阻尼特性研究
发布时间：2018-09-13 08:11
【摘要】：鉴于黏弹性阻尼材料在建筑结构抗震减震及抗风方面的重要性,以丁腈橡胶为基体、基于DMA法,首先考察了氯化聚丙烯(CPP)、短碳纤维(CARB)、200目石墨粉(GRAP)、鳞片石墨(FLAKE)、云母粉(MICA)等与基体材料共混物的基本力学性能,其次研究了掺合剂对基体材料的影响,并给出了组分比对基体胶阻尼性能的影响效果对比分析。研究结果满足了两个设计要求:1.改进了材料的阻尼性能,使损耗因子提高至1.26;2.使原材料的温位Tg从28.2℃调整至15℃左右,并大大拓展了tanδ0.5的温域。并且研究发现,单纯添加200目石墨粉的效果最佳,粒径大的炭黑类材料如高耐磨炭黑(FEF)和软质快压出炭黑(HAF)对NBR材料的改进效果不大。
[Abstract]:In view of the importance of viscoelastic damping materials in seismic and wind resistance of building structures, nitrile butadiene rubber (NBR) is used as the matrix and based on DMA method. The basic mechanical properties of chlorinated polypropylene (CPP),) short carbon fiber (CARB) mesh graphitic powder (GRAP),) flake graphite (FLAKE),) mica powder (MICA) with matrix materials were investigated, and the effect of admixture on matrix materials was studied. The effect of the component ratio on the damping property of the matrix adhesive was compared and analyzed. The results meet two design requirements: 1. 1. The damping property of the material is improved, and the loss factor is raised to 1.26 ~ 2. The temperature potential Tg of raw materials was adjusted from 28.2 鈩，
本文编号：2240569
[Abstract]:In view of the importance of viscoelastic damping materials in seismic and wind resistance of building structures, nitrile butadiene rubber (NBR) is used as the matrix and based on DMA method. The basic mechanical properties of chlorinated polypropylene (CPP),) short carbon fiber (CARB) mesh graphitic powder (GRAP),) flake graphite (FLAKE),) mica powder (MICA) with matrix materials were investigated, and the effect of admixture on matrix materials was studied. The effect of the component ratio on the damping property of the matrix adhesive was compared and analyzed. The results meet two design requirements: 1. 1. The damping property of the material is improved, and the loss factor is raised to 1.26 ~ 2. The temperature potential Tg of raw materials was adjusted from 28.2 鈩，
本文编号：2240569
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