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首页> 外文期刊>Journal of Applied Polymer Science >HIGH-STRAIN HYSTERESIS OF RUBBER VULCANIZATES OVER A RANGE OF COMPOSITIONS, RATES, AND TEMPERATURES
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HIGH-STRAIN HYSTERESIS OF RUBBER VULCANIZATES OVER A RANGE OF COMPOSITIONS, RATES, AND TEMPERATURES

机译：橡胶硫化物在成分，速率和温度范围内的高滞后性

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Hysteresis loss of natural rubber (NR) and styrene-butadiene rubber (SBR) vulcanizates having variations of loading of carbon black, silica, clay, resin, and curatives has been measured over a wide range of strain rates and temperatures as well as under swollen conditions. Hysteresis loss increases with an increase in strain rate, filler loading, resin loading (at high rates), crosslink density, and strain level. Hysteresis decreases with an increase in temperature, particle diameter of filler, and resin loading at high testing temperature. All the data of hysteresis loss of filled NR and SBR compounds have been found to be superimposable on single master curves with the help of the WLF shift factor. The master curves can be divided into three regions. The slope of the intermediate region, Delta log(hysteresis)/Delta log(Ra-T) has been found to be 0.1 for almost all the vulcanizates. Similar master plots have been obtained when the hysteresis loss has been measured at higher cycles and higher extensions and also by using the data of the hysteresis loss ratio. The hysteresis loss ratio of all the vulcanizates follows a similar trend, except far the highly crosslinked system, which shows a lower value. Carbon black contributes significantly to the hysteresis loss even when the energy dissipation is minimized by swelling. (C) 1997 John Wiley & Sons, Inc. [References: 17]
机译：在各种应变速率和温度范围以及溶胀下，已测量了具有变化的炭黑，二氧化硅，粘土，树脂和固化剂负载量的天然橡胶（NR）和丁苯橡胶（SBR）硫化橡胶的滞后损耗条件。磁滞损耗随应变率，填料填充量，树脂负载量（高速率），交联密度和应变水平的增加而增加。在高温下，磁滞现象会随温度，填料粒径和树脂负载的增加而降低。借助WLF位移因子，已发现填充的NR和SBR化合物的所有磁滞损耗数据都可叠加在单个主曲线上。主曲线可分为三个区域。已经发现，几乎所有硫化橡胶的中间区域的斜率Delta log（滞后）/ Delta log（Ra-T）均为0.1。当在更高的周期和更高的延展下测量磁滞损耗时，还可以通过使用磁滞损耗比的数据来获得类似的主图。所有硫化胶的磁滞损耗比都遵循类似的趋势，只是高度交联的系统的值较低。即使通过溶胀使能量消耗最小化，炭黑也对滞后损耗有很大贡献。 （C）1997 John Wiley＆Sons，Inc. [参考：17]

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