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首页> 外文期刊>Journal of Applied Polymer Science >Fracture behavior of NR and SBR vulcanizates filled with ground rubber having uniform particle size
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Fracture behavior of NR and SBR vulcanizates filled with ground rubber having uniform particle size

机译：NR和SBR硫化橡胶填充颗粒尺寸均一的橡胶的断裂行为

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The use of recycled rubber including ground scrap vulcanizates in rubber compounds was studied. When ground rubber was incorporated into rubber compounds, the physical properties, especially the tensile strength, were deteriorated compared to the virgin rubber compound. Also, incorporating ground rubber caused a change of the cure behavior via migration of sulfur or an accelerator between the virgin rubber matrix and the ground rubber vulcanizate. In this study, the fracture behavior and abrasion property of carbon black-filled SBR and NR compounds containing ground rubber vulcanizate were investigated. Also, the effect of the particle size or loading volume of ground rubber powder on those properties was studied. Four different sizes, 420-600, 177-250, 125-150, and 75-88 mum, of ambient ground rubber powder recycled from waste tire were selected and used in the compounding. The loading amounts of ground rubber powder were 10, 30, and 50 phr. The flex crack growth of SBR- and NR-based compounds was altered by the addition of ground rubber particles. More delayed crack growth was observed with an increasing loading volume and decreasing particle size of the ground rubber powders, and this behavior was more prominent in SBR than in NR compounds. Tangent delta, a direct measure of internal energy dissipation, increased with an increasing loading volume of the ground rubber particles. The abrasion rate of ground rubber-filled compounds was more dependent on the size of the abrasion pattern than on the loading level or particle size of the ground rubber powders. (C) 2002 Wiley Periodicals, Inc. [References: 24]
机译：研究了再生橡胶，包括在橡胶料中使用的碎废硫化橡胶。当将磨碎的橡胶掺入橡胶混合物中时，与原始橡胶混合物相比，物理性能，特别是抗张强度劣化。而且，掺入磨碎的橡胶通过在原始橡胶基质和磨碎的橡胶硫化胶之间迁移硫或促进剂而引起硫化行为的改变。在这项研究中，研究了炭黑填充的SBR和NR含硫化橡胶硫化橡胶的复合材料的断裂行为和耐磨性。另外，还研究了橡胶粉的粒径或负载量对这些性能的影响。从废轮胎中回收了四种不同尺寸的420-600、177-250、125-150和75-88微米的环境地面橡胶粉，并将其用于混料。橡胶粉的负载量为10、30和50 phr。通过添加磨碎的橡胶颗粒，可以改变SBR和NR基化合物的挠曲裂纹扩展。随着负载量的增加和磨碎的橡胶粉的颗粒尺寸的减小，观察到了更延迟的裂纹扩展，这种行为在SBR中比在NR化合物中更为明显。切线增量是内部能量耗散的直接量度，随着地面橡胶颗粒的装载量增加而增加。磨碎的橡胶填充化合物的磨损速率更取决于磨蚀图案的尺寸，而不是磨碎的橡胶粉的负载量或粒度。 （C）2002 Wiley Periodicals，Inc. [参考：24]

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