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首页> 外文期刊>Journal of Applied Polymer Science >Effect of Coprecipitated Barium Ferrite on the Cure Characteristics and Dynamic Properties of Natural Rubber-Ferrite Composites Around Percolation
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Effect of Coprecipitated Barium Ferrite on the Cure Characteristics and Dynamic Properties of Natural Rubber-Ferrite Composites Around Percolation

机译：共沉淀钡铁素体对渗流周围天然橡胶-铁素体复合材料固化特性和动力学性能的影响

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摘要

The influence of coprecipitated hexagonal barium ferrite BaFe12O19 phase on the cure characteristics and dynamic properties of natural rubber-ferrite composites has been Studied as a function of ferrite loading up to 220 phr (part per hundred part of rubber). Unusual characteristics of coprecipitated ferrite particles were discovered by scanning electron microscope. The results show that scorch time t(10) and cure time t(90) decrease dramatically with increasing ferrite content LIP to critical ferrite loading. After 160 phr, t(90) increases sharply with increasing ferrite content, in contrast to saturation of t(10). Minimum torque recorded normal behaviour at low ferrite loading, whereas it decreases with increasing ferrite content at high ferrite loading because of dilution effects. The storage modulus E' and loss modulus E '' decrease with increasing temperature. The loss tangents (tan delta) of the composites are greater than those of the pure rubber. Linear viscoelastic behavior was observed as a result of the homogeneity and compatibility of the composites.
机译：研究了共沉淀六角形钡铁氧体BaFe12O19相对天然橡胶-铁氧体复合材料固化特性和动态性能的影响，该影响是铁素体负载量高达220 phr（每100份橡胶中的份数）的函数。通过扫描电子显微镜发现了共沉淀铁氧体颗粒的异常特性。结果表明，随着临界铁素体负载下铁素体含量LIP的增加，焦烧时间t（10）和固化时间t（90）急剧减少。在160 phr之后，与饱和的t（10）相比，t（90）随着铁素体含量的增加而急剧增加。最小扭矩在低铁素体负载下记录为正常行为，而由于稀释效应，它随高铁素体负载下的铁素体含量增加而降低。储能模量E'和损耗模量E''随温度升高而降低。复合材料的损耗角正切（tanδ）大于纯橡胶的损耗角正切。由于复合材料的均质性和相容性，观察到线性粘弹性行为。

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