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首页> 外文期刊>Biomaterials >Strengthening of glass-ionomer cement by compounding short fibres with CaO-P2O5-SiO2-Al2O3 glass.
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Strengthening of glass-ionomer cement by compounding short fibres with CaO-P2O5-SiO2-Al2O3 glass.

机译：通过将短纤维与CaO-P2O5-SiO2-Al2O3玻璃混合来增强玻璃离聚物水泥。

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摘要

The purpose of this study was to determine if short fibres of CaO-P2O5-SiO2-Al2O3 (CPSA) glass possessing a particular aspect ratio (length/diameter) could be used as a reinforcing agent for glass-ionomer cement. The powder of a commercial glass-ionomer cement (not resin modified) was mixed with variously sized CPSA glass short fibres before mixing with the liquid of the glass-ionomer cement. The mixed powders containing 60 mass% CPSA glass short fibres (diameter, 9.7 +/- 2.1 microm, aspect ratio, 5.0 +/- 0.9) obtained maximum values of 18 and 35 MPa for the diametral tensile strength (DTS) and flexural strength (FS) of set cements, respectively, after 24 h. These DTS and FS values were 1.8 and 4.5 times larger, respectively, than those of the set glass-ionomer cement not containing short fibres. Moreover, it was found that the addition of CPSA glass short fibres was remarkably more effective in the strengthening than electric glass (a typical glass fibre) short fibres. The results suggested that the CPSA glass short fibres acted as a reinforcing agent for strengthening the glass-ionomer cement, because of the shape of short fibres and reactivity between the mixing liquid and short fibres.
机译：这项研究的目的是确定具有特定纵横比（长度/直径）的CaO-P2O5-SiO2-Al2O3（CPSA）玻璃的短纤维是否可以用作玻璃离聚物水泥的增强剂。在与玻璃离聚物水泥的液体混合之前，将商业玻璃离聚物水泥的粉末（未树脂改性）与各种尺寸的CPSA玻璃短纤维混合。包含60质量％CPSA玻璃短纤维（直径9.7 +/- 2.1微米，长宽比，5.0 +/- 0.9）的混合粉末的径向抗张强度（DTS）和抗弯强度的最大值分别为18和35 MPa。 FS）分别在24小时后凝固。这些DTS和FS值分别比不含短纤维的固化玻璃离聚物水泥的DTS和FS值大1.8倍和4.5倍。而且，发现CPSA玻璃短纤维的添加比电玻璃（典型的玻璃纤维）短纤维在增强方面显着更有效。结果表明，由于短纤维的形状和混合液与短纤维之间的反应性，CPSA玻璃短纤维可作为增强玻璃离聚物水泥的增强剂。

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