In order to quantitatively analyze the effect of powder on fiber dispersion, the surface free energy theory was applied to test the surface free energy parameters of each powder based on the “capillary rise method”. Then, the surface free energy of each powder was further calculated. Finally, based on a certain ratio, the fiber reinforced cement was formed. In terms of the test piece, the profile of the cement slurry was imaged through the method of scanning electron microscopy. Through the image, the distribution of the fiber in the profile was quantified, and the relationship between the free energy of the powder surface and the distribution of the fiber in the cement slurry was clarified. It indicates that there is a strong correlation between the dispersibility and the surface energy of the powder. The greater the surface energy of the powder, the higher the distribution coefficient of the fiber in the cement paste.

中文翻译：

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粉末表面能对聚乙烯醇纤维分散技术的影响

为了定量分析粉末对纤维分散的影响，基于“毛细管上升法”，应用表面自由能理论对每种粉末的表面自由能参数进行了测试。然后，进一步计算每种粉末的表面自由能。最终，基于一定的比例，形成了纤维增强水泥。在试件方面，通过扫描电子显微镜法对水泥浆的轮廓成像。通过该图像，定量化了轮廓中纤维的分布，并且弄清了粉末表面的自由能与水泥浆中纤维的分布之间的关系。这表明粉末的分散性和表面能之间有很强的相关性。粉末的表面能越大，