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首页> 外文期刊>Journal of Applied Polymer Science >Effect of natural rubber on wood-reinforced tannin composites
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Effect of natural rubber on wood-reinforced tannin composites

机译：天然橡胶对木材增强单宁复合材料的影响

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摘要

Natural rubber latex was added to composite materials formulated from a quebracho tannin adhesive crosslinked with hexamethylenetetramine and wood flour as a reinforcing filler. The final microstructure of the thermoset modified by the addition of different concentrations of latex was observed by scanning electron microscopy. The flexural and impact behavior of the modified materials was analyzed and related to the final microstructure of the composites. The effect of exposing the materials to humid environments was also evaluated. The measurements indicated that the addition of latex did not significantly reduce water absorption. However, it facilitated the preparation process of samples with low filler contents because of the increased viscosity of the mixture, which inhibited particle settling. On the other hand, the flexural properties increased with the addition of latex-coritaining proteins through a reaction similar to tanning in leathers. The impact properties presented a similar trend, with the largest change occurring between 0 and 5% natural rubber in the matrix formulation. (c) 2007 Wiley Periodicals, Inc.
机译：将天然橡胶胶乳添加到复合材料中，该复合材料由用六亚甲基四胺和木粉作为交联填料交联的quebracho单宁胶制成。通过扫描电子显微镜观察通过添加不同浓度的胶乳改性的热固性塑料的最终微观结构。分析了改性材料的挠曲和冲击行为，并与复合材料的最终微观结构有关。还评估了将材料暴露在潮湿环境中的效果。测量结果表明，添加乳胶不会明显降低吸水率。但是，由于混合物的粘度增加，这阻碍了颗粒的沉降，从而简化了填料含量低的样品的制备过程。另一方面，通过与皮革中鞣制相似的反应，通过添加乳胶成分的蛋白质，挠曲特性得以提高。冲击性能呈现出类似的趋势，最大的变化发生在基质配方中的0％至5％天然橡胶之间。 （c）2007年Wiley Periodicals，Inc.

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