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首页> 外文期刊>Journal of Cellular Plastics >Morphological, mechanical, and thermal properties of injection molded polylactic acid foams/composites based on wood flour
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Morphological, mechanical, and thermal properties of injection molded polylactic acid foams/composites based on wood flour

机译：基于木粉的注塑成型聚乳酸泡沫/复合材料的形态学，机械和热性能

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摘要

In this work, injection molding was used to produce polylactic acid foams using azodicarbonamide as a chemical foaming agent and to study the effect of wood flour concentration (15, 25, and 40% wt.) on morphology (scanning electron microscopy), density (gas pycnometry), as well as mechanical (tensile, flexural, and impact) and thermal (differential scanning calorimetry) properties. In particular, density reduction was controlled by the amount of material injected (shot size). The results showed that polylactic acid properties increased with wood content, but decreased with density reduction. Nevertheless, specific flexural modulus (per unit weight) always increased with foaming. Foaming was also shown to significantly increase polylactic acid crystallinity.
机译：在这项工作中，注射成型用于使用偶氮二甲酰胺作为化学发泡剂产生聚乳酸泡沫，研究木粉浓度（15,25和40％）对形态（扫描电子显微镜），密度（ 气体Pycnometry），以及机械（拉伸，弯曲和冲击）和热（差示扫描量热法）性质。 特别地，密度降低由注射的材料量（拍摄尺寸）控制。 结果表明，聚乳酸性能随木质含量而增加，但随着密度降低而降低。 然而，具体的弯曲模量（每单位重量）总是通过发泡而增加。 还显示出泡沫显着增加聚乳酸结晶度。

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