PP混摻PLA熔噴不織布之吸音性探討

Discussion on Sound Absorption of PP Blends with PLA Melt-blown Non-woven Fabric

張俊彥(J.Y. Zhang) ； 朱政崑(C.K.Chu)

《紡織綜合研究期刊》 32卷1期 (2022/01) Pp. 58-61

https://doi.org/10.6439/TTRJ.202201_32(1).0009

摘要

本研究係以PP母粒混摻不同比例的PLA粒子，以熔噴法製成熔噴不織布，PLA含量1%、3%時，因PLA含量不高，溶解前後對吸音效果影響不明顯，PLA含量至5%時，溶解後，吸音係數雖然提升了0.16，但PLA含量5%已是添加之最高含量，故凹面反射理論於本實驗中能提升之吸音性能有限。PLA含量在1%時，在頻率6300Hz時吸音係數達0.86，吸音效果最好。而基重提高至300g重時，使PP/PLA1%，PP/PLA3%熔噴不織佈在中，高頻時吸音係數平均上升了0.2，吸音效果在中、高頻有明顯的上升。

關鍵字

中高頻 ； 混摻 ； 聚乳酸 ； 噪音

並列摘要

In this study, PP masterbatch was mixed with PLA particles in different proportions, and melt-blown nonwoven fabric was made by melt-blown method. When the PLA content is 1%, 3%, because the PLA content is not high, the effect on the sound absorption effect before and after dissolution is not obvious. When the content reaches 5%, although the sound absorption coefficient increases by 0.16 after dissolution, the PLA content is already the highest content added at 5%, so the sound absorption performance that can be improved by the concave reflection theory in this experiment is limited. When the PLA content is 1%, the sound absorption coefficient reaches 0.86 at a frequency of 6300 Hz, and the sound absorption effect is the best. When the basis weight is increased to 300g, the PP/1% PLA and PP/3% PLA meltblown non-woven fabrics are in the middle, and the sound absorption coefficient at high frequencies rises by an average of 0.2, the sound absorption effect is in the middle, and the middle school has a significant increase.

並列關鍵字

Medium and high frequency ； blending ； polylactic acid ； noise