In this paper, the benefits and deficiencies of substituting paraffin for butadiene sodium rubber as the lubricants used in the production of cemented carbides are studied.

本文对用石蜡取代丁钠橡胶作硬质合金生产成形剂的优点及其不足进行了论述。

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The artifactitious process and mechanical properties of nature rubber (NR) and nitrile-butadiene rubber (NBR) using the fly-ash modified with sodium silicate as strengthening agent were studied.

以硅酸钠改性粉煤灰作为补强剂，研究了其补强天然橡胶(NR)、丁腈橡胶(nbr)的工艺及产品的性能。

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