首页> 外文期刊>Journal of Applied Polymer Science >Effect of natural coagula maturation on the processability, cure, and mechanical properties of unfilled vulcanizates of Hevea natural rubber
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Effect of natural coagula maturation on the processability, cure, and mechanical properties of unfilled vulcanizates of Hevea natural rubber

机译:天然凝结胶成熟度对三叶胶天然橡胶未填充硫化胶的加工性能,固化和力学性能的影响

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摘要

Fresh latex from different Hevea brasiliensis clones was naturally coagulated, subjected to different durations of maturation, processed into solid rubber, and compounded into pure gum stocks and vulcanized. Coagula maturation had clone-specific effects on the processability of the raw rubber: reduced for some clones, while others was less sensitive. The cure and mechanical behaviors of the compounded stocks and vulcanizates, respectively, were not sensitive to the clonal origin of coagula and their duration of maturation. Although coagula maturation could be associated with leaching, deactivation of inherent antioxidants in Hevea latex, as well as crosslinking and/or oxidation of polyisoprene chains, these results show that compounding with a standard pure gum recipe compensates for the Hevea latex constituents affected by maturation. Hence, extended maturation of Hevea coagula, for economic or other reasons, would influence much more the bulk behavior of raw rubber and have insignificant effects on the compounded stocks and vulcanizates. (c) 2006 Wiley Periodicals, Inc.
机译:将来自不同巴西橡胶树克隆的新鲜乳胶自然凝结,进行不同的成熟时间,加工成固体橡胶,然后混入纯胶原料中并硫化。凝块的成熟对生胶的可加工性具有克隆特异性的影响:某些克隆降低了,而另一些则不那么敏感。复合原料和硫化胶的固化和力学行为分别对凝固的克隆起源及其成熟持续时间不敏感。尽管凝结物的成熟可能与橡胶树胶乳的浸出,固有抗氧化剂失活以及聚异戊二烯链的交联和/或氧化有关,但这些结果表明,与标准的纯胶配方配合使用可以补偿受成熟作用影响的橡胶树胶乳成分。因此,出于经济或其他原因,橡胶树胶的延长成熟期将大大影响生胶的整体性能,并且对混合胶料和硫化胶的影响不大。 (c)2006年Wiley Periodicals,Inc.

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