Comparison of mechanical and tribological properties of glass-fiber-reinforced polyketone and polyketone/polyamide 6 blend composites

IF 2.8 4区工程技术 Q2 POLYMER SCIENCE Macromolecular Research Pub Date : 2024-04-08 DOI:10.1007/s13233-024-00260-y

Irem Nehir Uysal, Mehmet Atilla Tasdelen

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Abstract

In this study, the impact of two compatibilizers, ethylene terpolymer (C1) and maleic anhydride grafted polyethylene (C2), on the mechanical, thermal, and tribological properties of 30% glass-fiber-reinforced polyketone (PK) and polyketone/polyamide 6 (PK/PA-6) blend composites was investigated. In the case of 30% glass-fiber-reinforced PK composites, the mechanical test results showed that C2 significantly improves the impact resistance (over 48.8%) and elongation at break (over 13.3%) values due to the enhanced compatibility between glass fibers and the PK matrix, attributed to the maleic anhydride functionality. The tensile and flexural properties of the 30% glass-fiber-reinforced PK/PA-6 blend composites were determined to be between the values of pure PK/GF30 and PA-6/GF30 composites, which were its constituent components. Notably, these blend composites displayed higher impact resistance (19.6 kJ/m²) and elongation at break (4.86%) values than the pure PK/GF30 and PA-6/GF30 composites. The SEM images suggested that C2 creates a better interface between glass fibers and the matrix, resulting in a more cohesive structure. Differential scanning calorimeter analysis revealed two distinct glass transition temperatures, indicating the existence of two phases, and reflecting the immiscibility of the two polymers. Tribological studies showed that the friction coefficients and specific wear rates of PK/PA-6/GF30 composites were improved by increasing PK segment. The PK-25/PA6-50/GF30-C2 sample exhibited a friction coefficient of 0.341 μ and a specific wear rate of 1.15 10^¯6 mm³/Nm. Overall, the C2 proved to be a more suitable compatibilizer than C1, offering valuable insights for tailoring high-performance materials with enhanced properties.

Graphical Abstract

The influence of two compatibilizers, ethylene terpolymer (C1) and maleic anhydride grafted polyethylene (C2), on the mechanical, thermal, and tribological properties of 30% glass-fiber-reinforced polyketone and polyketone/polyamide 6 blend composites was investigated. Based on, mechanical, microscopic, thermal, and tribological results, the C2 was found to be a more suitable compatibilizer than C1 for improving the interface between glass fibers and the matrix

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玻璃纤维增强聚酮和聚酮/聚酰胺 6 混合物复合材料的机械和摩擦学特性比较

本研究调查了乙烯三元共聚物（C1）和马来酸酐接枝聚乙烯（C2）这两种相容剂对 30% 玻纤增强聚酮（PK）和聚酮/聚酰胺 6（PK/PA-6）共混复合材料的机械、热和摩擦学性能的影响。就 30% 玻纤增强 PK 复合材料而言，力学测试结果表明，由于马来酸酐功能增强了玻纤与 PK 基体之间的相容性，C2 显著提高了耐冲击性（超过 48.8%）和断裂伸长率（超过 13.3%）。30% 玻纤增强 PK/PA-6 共混复合材料的拉伸和弯曲性能介于纯 PK/GF30 和 PA-6/GF30 复合材料的值之间。值得注意的是，与纯 PK/GF30 和 PA-6/GF30 复合材料相比，这些共混复合材料显示出更高的抗冲击性（19.6 kJ/m2）和断裂伸长率（4.86%）。扫描电子显微镜图像表明，C2 在玻璃纤维和基体之间形成了更好的界面，从而形成了更具内聚力的结构。差示扫描量热仪分析显示了两种不同的玻璃化转变温度，表明存在两相，反映了两种聚合物的不可溶性。摩擦学研究表明，PK/PA-6/GF30 复合材料的摩擦系数和特定磨损率随着 PK 段的增加而提高。PK-25/PA6-50/GF30-C2 样品的摩擦系数为 0.341 μ，比磨损率为 1.15 10¯6 mm3/Nm。总之，C2 被证明是比 C1 更合适的相容剂，为定制具有更高性能的材料提供了宝贵的见解。

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来源期刊

Macromolecular Research 工程技术-高分子科学

CiteScore

4.70

自引率

8.30%

发文量

100

审稿时长

1.3 months

期刊介绍： Original research on all aspects of polymer science, engineering and technology, including nanotechnology Presents original research articles on all aspects of polymer science, engineering and technology Coverage extends to such topics as nanotechnology, biotechnology and information technology The English-language journal of the Polymer Society of Korea Macromolecular Research is a scientific journal published monthly by the Polymer Society of Korea. Macromolecular Research publishes original researches on all aspects of polymer science, engineering, and technology as well as new emerging technologies using polymeric materials including nanotechnology, biotechnology, and information technology in forms of Articles, Communications, Notes, Reviews, and Feature articles.