通过纳入生物基材料来提高POM的tribological性能
Lucas M Kneissl1,2, Roberts Joffe3, Mitjan Kalin2
1Polymer-Tribology Group, Division of Machine Elements, Department of Engineering Sciences and Mathematics, Luleå University of Technology, Campus Porsön, 971 87 Luleå, Sweden.
Polymers
|August 29, 2024
概括
可持续的纤维素纤维显著提高了聚氧甲 (POM) 复合材料的耐磨性. 这项研究显示了改进的tribological性能和稳定的摩擦,为苛刻的应用提供环保的替代方案.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物工程 聚合物工程
- 部落学 (tribology) 是一个学科.
背景情况:
- 聚氧甲 (POM) 是一个关键的工程聚合物用于tribological应用.
- 传统的POM钢筋使用化石碳或玻璃纤维.
- 越来越需要可持续的材料解决方案.
研究的目的:
- 研究POM/短纤维素纤维复合材料的三元学性能.
- 评估纤维素纤维作为可持续增强材料的潜力.
- 评估纤维素对磨损,摩擦和材料稳定性的影响.
主要方法:
- 聚氧甲/短纤维素纤维复合材料的制造.
- 在不同的滑动条件下进行三极管学试验 (5MPa,1 m/s).
- 对磨损系数,摩擦行为和材料降解的分析.
主要成果:
- 在5MPa和1m/s的10重%纤维素时观察到~69%的磨损系数改善.
- 与未填充的POM相比,添加纤维素纤维稳定了摩擦行为.
- 在测试后没有检测到热氧化降解.
结论:
- 短纤维素纤维为POM提供了可持续和有效的增强.
- POM/纤维素复合材料显示出有希望的耐磨性和稳定的摩擦.
- 这些发现支持开发环保,高性能的tribological聚合物.
相关概念视频
Bioremediation
17.4K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
17.4K
Pivot Bearings
2.8K
In mechanical systems, bearings are crucial in facilitating relative motion between two components while minimizing friction and wear. They help distribute various loads (radial, axial or a combination of both loads) across machinery parts, ensuring smooth and efficient operation.
A pivot bearing is a specialized type of bearing designed to support axial loads on a rotating shaft. The bearing surface, or the pivot, is positioned at the end of a shaft to support the axial thrust. The pivot may...
A pivot bearing is a specialized type of bearing designed to support axial loads on a rotating shaft. The bearing surface, or the pivot, is positioned at the end of a shaft to support the axial thrust. The pivot may...
2.8K
Classification and Mechanical Properties of Synthetic Polymers
22
Synthetic polymers are classified as elastomers, fibers, or plastics based on their crystallinity. Crystallinity, the degree of long-range order in the solid state, influences the mechanical properties (stretching or contracting) of elastomers. Elastomers are flexible polymers that can expand or contract easily upon the application of an external force. They have numerous crosslinks that pull them back into their original shape when stress is removed. Silicones, for instance, are highly elastic...
22
Bioavailability Enhancement: Drug Stability Enhancement and GI Retention
336
Improving a drug's stability in the gastrointestinal (GI) tract is paramount for enhancing its bioavailability and therapeutic effectiveness. Various strategies are employed to protect the drug from the harsh gastric milieu and to ensure its release and absorption at the desired site within the GI tract.Polymer coatings are one such method used to shield drugs from the stomach's acidic environment. By preventing premature drug release, these coatings improve the bioavailability of unstable...
336
Bioplastics
73
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
73
Biofuels
108
The microbial conversion of organic matter into biofuels holds potential as a renewable energy source. Among biofuel sources, microalgae are recognized as a highly efficient and adaptable feedstock for biodiesel production, owing to their rapid biomass accumulation, elevated lipid productivity, and capacity to proliferate in diverse aquatic systems, including freshwater, marine, and wastewater habitats. Unlike terrestrial crops, microalgae do not compete for land and can achieve significantly...
108


