Carbon Black Distribution in Elastomer Blends

Carbon Black Distribution in Elastomer Blends
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弹性体共混物中的炭黑分布

DOI：
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发表时间：
1967
期刊：
影响因子：
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通讯作者：
J. E. Callan
J. E. Callan
中科院分区：
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文献类型：
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作者：
W. M. Hess;C. Scott;J. E. Callan

文献摘要

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一种新的电子显微镜技术可以研究弹性体共混物的非均质性和填料的分布。硫化胶内嵌有特定的单体体系，随后聚合。然后用超微切片机对标本进行切片，并在电子显微镜下进行检查。在研究天然橡胶与其他几种弹性体的共混物时，获得了优异的聚合物对比。这些共混物的均匀性受到混合过程和聚合物特性如粘度和各种相互作用效应的影响。在弹性体共混物中填充位置的差异也可以很容易地检测到。炭黑（ISAF）通常在与天然橡胶的50/50预混料中优先出现在聚丁二烯中。这种亲和力取决于聚合物的粘度，并且可以变化。对沉淀二氧化硅和化学氧化ISAF的研究表明，极性因素可以取代粘度因素，并决定…
Abstract A new electron microscope technique permits study of the heterogeneity of elastomer blends and filler distribution therein. Vulcanizates are embedded with a specific monomer system which is subsequently polymerized. Specimens are then sectioned with an ultramicrotome and examined in the electron microscope. Excellent contrast between polymers was obtained in examination of blends of natural rubber with several other elastomers. The homogeneity of these blends is shown to be influenced by mixing procedure and polymer characteristics such as viscosity and various interaction effects. Differences in filler location in elastomer blends can also be detected readily. Carbon black (ISAF) will usually locate preferentially in the polybutadiene in a 50/50 preblend with natural rubber. This affinity is shown to depend on polymer viscosity and can be varied. Investigations with precipitated silica and chemically oxidized ISAF suggest that polarity factors can supersede viscosity considerations and determine...