Development and mechanical properties of bagasse fiber reinforced composites
Development and mechanical properties of bagasse fiber reinforced composites
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DOI：
10.1163/156855107782325195
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发表时间：
2007-01
影响因子：
2.9
通讯作者：
Yong Cao;K. Goda;S. Shibata
中科院分区：
文献类型：
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作者：
Yong Cao;K. Goda;S. Shibata
以甘蔗渣纤维(BF)为原料，采用注射成型和压制成型的方法，制备了甘蔗渣纤维(BF)增强环保复合材料。分别选择聚丙烯(PP)和聚己内酯玉米淀粉(PCL-C)作为典型的可回收树脂和可生物降解树脂，作为注射成型和模压成型的合适基质。从纤维质量分数和注射成型条件两个方面对BF/PP复合材料的力学性能进行了研究。并对BF/PCL复合材料的力学性能和生物降解性进行了评价。在注射成型的情况下，由于高炉的热降解，弯曲模数随着纤维质量分数的增加而增加，力学性能随着钢瓶温度的增加而下降。提高复合材料弯曲性能和冲击强度的最佳工艺条件为：模具温度90℃，S注塑间隔30℃，钢瓶温度165~185℃。另一方面，对于BF/PCL-C全绿复合材料，弯曲性能和冲击强度都随着纤维质量分数的增加而提高。认为在制备过程中对高炉进行压缩可以提高其力学性能。生物降解性测试结果表明，BF的加入加速了纤维的失重，并随着纤维含量的增加而进一步增加。这说明BF的加入和用量可以促进全绿色复合材料的生物降解性。
Environment-friendly composites reinforced with bagasse fiber (BF), a kind of natural fiber as the remains from squeezed sugarcane, were fabricated by injection molding and press molding. As appropriate matrices for injection molding and press molding, polypropylene (PP) and polycaprolactone-cornstarch (PCL-C) were selected, as a typical recyclable resin and biodegradable resin, respectively. The mechanical properties of BF/PP composites were investigated in view of fiber mass fraction and injection molding conditions. And the mechanical properties and the biodegradation of BF/PCL composites were also evaluated. In the case of injection molding, the flexural modulus increased with an increase in fiber mass fraction, and the mechanical properties decreased with an increase in cylinder temperature due to the thermal degradation of BF. The optimum conditions increasing the flexural properties and the impact strength were 90°C mold temperature, 30 s injection interval, and in the range of 165 to 185°C cylinder temperature. On the other hand, as to BF/PCL-C fully-green composites, both the flexural properties and the impact strength increased with an increase in fiber mass fraction. It is considered that the BF compressed during preparation could result in the enhancement in mechanical properties. The results of the biodegradability test showed the addition of BF caused the acceleration of weight loss, which increased further with increasing fiber content. This reveals that the addition and the quantities of BF could promote the biodegradation of fully-green composites.