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首页> 外文期刊>Journal of Applied Polymer Science >Effects of Fillers on Mechanical Properties of a Water-Swellable Rubber
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Effects of Fillers on Mechanical Properties of a Water-Swellable Rubber

机译：填料对水溶胀橡胶力学性能的影响

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摘要

The mechanical properties of the water-swellable rubber prepared by blending polychloroprene with precipitated silica, crosslinked sodium polyacrylate, polyethylene oxide, and vuclanizing agents-such as stress at break, strain at break, modulus, energy at break, and hardness-were studied before and after sweeling with water. The results showed that the addition of the reinforcing filler (precipitated silica) increased the mechanical properties, while adding crosslinked sodium polyacrylate decreased the mechanical properties, although it could improve water-absorbent properties of the water-swellable rubber. If some polyethylene oxide was included in the rubber formulation, the water-absorbent properties and the mechanical properties of the rubber both increased; but, with the increase of more polyethylene oxide, the mechanical properties decreased. Wide-angle X-ray diffracting analysis was conducted to study the crystalline behavior of the rubber, which showed that the crystallinity of the vulcanized polychlorprene increased first and then decreased with an increase in the amount of polyethylene oxide. The crosslink density of the rubber was calculated by the Flory-Rehner equation. The mechanical strength of the rubber significantly decreased after swelling with water, compared with that before swelling with water. The morphology of blends was shown by scanning electron microscopy graphs.
机译：以前研究了将聚氯丁二烯与沉淀二氧化硅，交联聚丙烯酸钠，聚环氧乙烷和硫化剂共混制得的水溶胀橡胶的机械性能-断裂应力，断裂应变，模量，断裂能和硬度-并用水冲洗后。结果表明，添加补强填料（沉淀二氧化硅）可提高机械性能，而添加交联聚丙烯酸钠可降低机械性能，尽管它可以改善水溶胀橡胶的吸水性能。如果在橡胶配方中包含一些聚环氧乙烷，则橡胶的吸水性能和机械性能均会提高;但是，随着更多聚环氧乙烷的增加，机械性能下降。进行了广角X射线衍射分析，研究了橡胶的结晶行为，结果表明，随着聚环氧乙烷量的增加，硫化聚氯丁二烯的结晶度先升高后降低。橡胶的交联密度通过Flory-Rehner方程计算。与水溶胀前相比，水溶胀后橡胶的机械强度显着降低。共混物的形态通过扫描电子显微镜图显示。

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