可持续玄武岩纤维增强聚酰胺 6,6 复合材料:纤维长度和纤维含量对机械性能的影响

IF 5.3 Q2 MATERIALS SCIENCE, COMPOSITES Composites Part C Open Access Pub Date : 2024-07-01 DOI:10.1016/j.jcomc.2024.100495
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引用次数: 0

摘要

本研究旨在探讨在注塑工程聚酰胺 6.6(PA 6.6)塑料复合材料中使用可持续玄武岩纤维(BF)与玻璃纤维和滑石粉的比较。在 PA 6,6 中加入长度为 3 毫米和 12 毫米的玄武岩纤维,重量分别为 23%和 30%,以制造复合材料。玄武岩纤维的加入限制了复合材料中聚合物链的流动性,导致其粘度增加。流变学结果表明,对外加应力的相外响应表明,3 毫米的玄武岩纤维复合材料可以耗散更多的能量,而且复合材料在变形时的弹性表现随着玄武岩纤维重量百分比的增加而增强。与纤维载荷相比,纤维长度对复合材料机械性能的影响更大。重量百分比为 23% 和 30% 的 12 毫米玄武岩纤维复合材料的拉伸强度和模量均高于 3 毫米玄武岩纤维复合材料,而重量百分比为 30% 的 3 毫米玄武岩纤维复合材料的抗弯强度提高了 25%。实验模量和根据混合物规则预测的理论模量表明,基体和玄武岩纤维之间存在相互作用。形态分析表明,3 毫米纤维的复合材料比 12 毫米纤维的复合材料更容易团聚。玻璃纤维增强 PA 6,6 的性能略高于玄武岩纤维增强 PA 6,6。不过,玄武岩纤维增强复合材料在拉伸强度、弯曲模量、弯曲强度和热变形温度方面的性能均优于滑石粉增强复合材料。
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Sustainable basalt fiber reinforced polyamide 6,6 composites: Effects of fiber length and fiber content on mechanical performance

The aim of this study is to explore the use of sustainable basalt fiber (BF) as compared to glass fiber and talc in injection molded engineering polyamide 6,6 (PA 6,6) plastic composite. Basalt fibers having lengths of 3 mm and 12 mm were added to PA 6,6 at 23 and 30 wt.% to fabricate the composites. The addition of basalt fiber restricts the mobility of the polymer chain in the composites, leading to its increased viscosity. Rheological results showed that the out-of-phase response to the applied stress indicated that the 3 mm basalt fiber composite could dissipate more energy, and the elastic behaviour of the composite under deformation increased with increasing basalt fiber wt.%. The fiber length had a larger effect on the mechanical properties of the composites as compared to the fiber load. The 12 mm basalt fiber composites at 23 wt.% and 30 wt.% produced higher tensile strength and modulus than the 3 mm basalt fiber composites while the 3 mm basalt fiber composite at 30 wt.% resulted in a 25 % increase in flexural strength. The experimental and the theoretical modulus predicted by the rule of mixtures showed an interaction between the matrix and the basalt fiber. Morphological analysis shows more agglomeration in composites with 3 mm fiber than the 12 mm. Glass fiber-reinforced PA 6,6 showed slightly higher performance than basalt fiber-reinforced PA 6,6. However, the basalt fiber-reinforced composites demonstrated better performance in tensile strength, flexural modulus, flexural strength, and heat deflection temperature than talc-reinforced composites.

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来源期刊
Composites Part C Open Access
Composites Part C Open Access Engineering-Mechanical Engineering
CiteScore
8.60
自引率
2.40%
发文量
96
审稿时长
55 days
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