机械坚固和隔热自然棉纤维增强生物复合材料板用于结构应用
M Abu Darda1, M A Rahman Bhuiyan1, M Ashnaim Bari1
1Department of Textile Engineering, Dhaka University of Engineering & Technology Gazipur 1707 Bangladesh arahman@duet.ac.bd.
RSC advances
|March 31, 2025
概括
这项研究开发了用于结构应用的天然棉纤维增强聚烯 (PP) 生物复合材料. 这些材料具有卓越的机械强度和有效的隔热,使它们适合苛刻的环境.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 复合材料 复合材料 复合材料
背景情况:
- 开发可持续和高性能材料对于结构应用至关重要.
- 天然纤维为复合材料中的合成增强剂提供了一种可再生的替代品.
- 改善天然纤维复合材料的界面粘附性可以增强机械性能.
研究的目的:
- 设计和开发天然棉纤维增强聚烯 (PP) 生物复合材料.
- 研究这些新型复合材料的机械强度和隔热性能.
- 评估它们适用于各种结构应用,需要机械和热性能.
主要方法:
- 通过将不同体积分数的棉花和PP纤维均混合来制造棉花-PP复合材料.
- 机械性能的表征:拉伸,曲和冲击强度.
- 热性能的评估:热屏障特性,热稳定性,热导率和导热的耐热性.
- 使用热重力测量分析 (TGA) 和差分扫描热量测量 (DSC) 分析热行为.
主要成果:
- 具有40/60棉/PP比的复合材料实现了最大的拉力 (62.09MPa) 和屈曲强度 (138.90MPa).
- 50/50棉复合材料表现出最高的冲击强度 (130.75 kJ m-2).
- 60/40棉/PP复合材料表现出最低的导热率 (0.063 W m-1 K-1),最高的导热电阻 (0.063 m2·K W-1),以及出色的辐射耐热性.
- 在高温下,TGA和DSC证实了足够的热稳定性和热能吸收.
结论:
- 通过均混合制造的棉PP复合材料表现出优越的机械强度和足够的隔热.
- 棉花与PP的比例显著影响机械和热性能.
- 这些生物复合材料适用于要求高机械和热性能的结构应用.
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