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首页> 外文期刊>Journal of Applied Polymer Science >Tensile test of poly(vinyl chloride) filled with ground calcium carbonate particles
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Tensile test of poly(vinyl chloride) filled with ground calcium carbonate particles

机译：填充碳酸钙颗粒的聚氯乙烯的拉伸试验

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The fracture behavior of poly(vinyl chloride) filled with ground calcium carbonate particles during a tensile test was studied. The particles were prepared by crushing natural raw crystalline limestone. For this purpose, 10-50 parts of the particles having two different mean sizes (2 and 8 mu m) without further surface treatment were mixed with 100 parts of poly(vinyl chloride) and 3 parts of lead stearate as a stabilizer using a mixing roll. A tensile test was carried out using a dumbbell specimen. As a result, the yield stress decreased with increase in the particle content; however, there was no significant influence of particle size. From scanning electron microscopic observations of the specimen's surfaces during the tensile test, it was found that the particle/matrix interfaces were delaminated and formed voids around the particles when the applied stress approached the yield stress, that is, the particles acted as voids and the matrix around the voids was plastically deformed effectively. These observations appear to be the reason for the decrease of yield stress by the incorporation of the particles. (C) 1998 John Wiley & Sons, Inc. [References: 20]
机译：研究了填充有研磨碳酸钙颗粒的聚氯乙烯在拉伸试验中的断裂行为。通过粉碎天然的原始结晶石灰石来制备颗粒。为此，将10-50份具有两种不同平均粒径（2和8μm）的颗粒，未经进一步表面处理，并与100份聚氯乙烯和3份硬脂酸铅作为稳定剂混合使用。滚。使用哑铃试样进行拉伸试验。结果，屈服应力随着颗粒含量的增加而降低;但是，粒径没有显着影响。从拉伸试验过程中样品表面的扫描电子显微镜观察，发现当施加的应力接近屈服应力时，颗粒/基体的界面会分层并在颗粒周围形成空隙，也就是说，颗粒起着空隙的作用。空隙周围的基质有效地塑性变形。这些观察结果似乎是通过掺入颗粒降低屈服应力的原因。 （C）1998 John Wiley＆Sons，Inc. [参考：20]

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