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时温耦合影响下的车用PVB薄膜材料黏弹性研究

Research on Viscoelasticity of Vehicle PVB Film Material Under Time-Temperature Coupling Effect

中文摘要英文摘要

基于动态力学分析(Dynamic Mechanical Analysis,DMA)方法,对汽车风挡玻璃的夹层材料--聚乙烯醇缩丁醛(PolyVinyl Butyral,PVB)薄膜的黏弹性能进行了研究。在温度为223K至323K,升温速率为2.5K/min至12.5K/min,以及振动频率为0.01Hz至50Hz的范围内,测量了PVB薄膜的黏弹性参数,随着频率的升高和温度的降低,PVB薄膜从高弹态向玻璃态转变,建立了可以描述PVB薄膜玻璃化温度随扫描频率和升温速率变化的经验公式。拟合得到了PVB薄膜的Williams-Landel-Ferry(WLF)公式,并得到了其在293K时的动态模量主曲线。进而,分别基于广义Maxwell模型和分数阶导数模型,拟合了PVB薄膜的本构关系。为PVB薄膜及PVB夹层玻璃材料的理论研究和数值模拟奠定了基础。

PolyVinyl Butyral (PVB) film is the interlayer material of current automotive windshield. The dynamic viscoelasticity parameters of PVB film are experimentally studied based on Dynamic Mechanical Analysis (DMA) method. Viscoelasticity parameters on various temperature (223K-323K), heating rate (2.5K/min-12.5K/min), vibration frequency (0.01Hz-50Hz) are measured through parametric experiments. The state of PVB film changes from high-elastic to glassy as temperature increases and frequency decreases, the empirical formula can describe the relationship between glass transition temperature and frequency and heating rate of PVB are established. Williams-Landel-Ferry(WLF)are fitted and main curve of PVB at 293K are obtained. Constitutive behavior of PVB are analyzed based on Generalized Maxwell model and Constitutive Equation of Fractional Calculus separately. Results provide useful experiment data and important theoretical support in future research on viscoelasticity behavior of PVB film.

刘博涵、李一兵、许骏

材料科学高分子化合物工业合成树脂工业、塑料工业

PVB薄膜黏弹性能玻璃化温度时温等效原理

PVB FilmViscoelasticityGlass transition temperatureTime temperature-superposition-principlekey

刘博涵,李一兵,许骏.时温耦合影响下的车用PVB薄膜材料黏弹性研究[EB/OL].(2012-12-11)[2025-08-23].http://www.paper.edu.cn/releasepaper/content/201212-190.点此复制

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