FLEXURAL PROPERTIES OF INJECTION-MOLDED BAMBOO/PBS COMPOSITES
FLEXURAL PROPERTIES OF INJECTION-MOLDED BAMBOO/PBS COMPOSITES
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注射成型竹/PBS 复合材料的弯曲性能
DOI：
10.1142/s0217979210065726
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发表时间：
2010
影响因子：
1.7
通讯作者：
H. Takagi
中科院分区：
文献类型：
--
作者：
Kazuya Ohkita;H. Takagi
近年来，从环境的角度来看，人们越来越关注向可持续发展社会的转变。已经提出使用天然纤维增强的可生物降解复合材料作为一种解决方案。竹子是一种常用的可再生生物资源，具有生长迅速的先天优势。聚丁二酸丁二醇酯（PBS）作为基体树脂，具有生物降解特性。研究了注塑成型竹/PBS复合材料的弯曲性能。获得了以下结果。当注塑机筒体温度为140°C时，随着竹粉含量的增加，弯曲模量提高。但随着竹粉掺量的增加，复合材料的弯曲强度呈相反的下降趋势。竹纤维/PBS复合材料断口的SEM照片显示出典型的拔出纤维断裂行为，纤维没有断裂。PBS树脂在竹纤维表面没有粘附。加工条件影响竹/PBS复合材料的力学性能，在180°C和200°C的高温下，竹/PBS复合材料具有较高的弯曲强度和弯曲模量。
In recent years, from an environmental perspective, there has been increasing interest in the change to a sustainable society. The use of natural-fiber-reinforced biodegradable composites has been proposed as one solution. Bamboo is an often used renewable bio-resource; it has an inherent advantage of rapid growth. Polybutylene succinate (PBS), used as matrix resin, has biodegradable characteristics. This paper describes flexural properties of bamboo/PBS composites prepared by injection molding. The following results were obtained. The flexural modulus was improved with increasing bamboo powder contents when the cylinder temperature of the injection molder was 140°C. However, the flexural strength showed the opposite tendency to be decreased with increasing bamboo powder contents. An SEM photomicrograph of the fracture surface for bamboo/PBS composites showed typical fracture behavior of pull-out fibers without fiber fracture. Furthermore, there was no adhesion of PBS resin on the bamboo fiber surface. Processing conditions affected mechanical properties of bamboo/PBS composites, imparting higher flexural strength and flexural modulus at high cylinder temperatures such as 180°C and 200°C.