基岩纤维/聚氨复合材料的增强机械和声学性能通过Silane合剂
Mengchen Ge1,2, Xiaodong Li1, Fei Han3,4
1School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.
Polymers
|January 11, 2025
概括
经过修改的玄武岩微纤维复合材料显示出改进的机械和声学性能. 合剂KH550增强了聚氨弹性复合材料的抗拉强度,延长和声隔热.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 复合材料 复合材料 复合材料
背景情况:
- 聚氨弹性体 (PUE) 是多功能聚合物,在各种行业中具有应用.
- 提高PUE复合材料的机械和声学性能对于先进的应用至关重要.
- 玄武岩微纤维提供了一个可持续和高性能的增强选项.
研究的目的:
- 研究西兰合剂 (KH550和KH560) 对基岩微纤维增强聚氨弹性体复合材料的影响.
- 优化基岩纤维的修饰度,以提高复合材料的性能.
- 评估改性复合材料的机械和声学绝缘性能.
主要方法:
- 半预聚合物制备复合材料的方法.
- 红外光谱学用于微相分离和键分析.
- 扫描电子显微镜 (SEM) 用于界面和形态学的研究.
- 机械性能特征测试的通用测试机.
- 动态热力学分析 (DMTA) 用于损失因子的确定.
- 声阻管用于传输损失的测量.
主要成果:
- 确定了基岩纤维修饰的最佳度:1%的KH550和1.5%的KH560.
- 经KH550修改的玄武岩微纤维/聚氨弹性体 (BMF/PUE) 复合材料表现出卓越的性能.
- 观察到显著的改进:拉伸强度增加31%,破裂时延长37%,隔音21%.
- 使用FTIR量化了微相分离和键,与增强的特性相关.
结论:
- 修改Silane合剂有效地改善了玄武岩微纤维和聚氨弹性体之间的界面粘附.
- KH550是一种比KH560更有效的合剂,可以提高基岩微纤维增强PUE复合材料的整体性能.
- 开发的复合材料显示出需要高机械强度和有效的隔音的应用的潜力.
相关概念视频
01:22Fiber Reinforced Concrete
68
Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
68
01:21Pozzolans
101
Pozzolans are siliceous or aluminous materials blended with Portland cement. They interact with the calcium hydroxide produced during the hydration of Portland cement and contribute to improved strength and durability of concrete. The pozzolanic activity, a measure of a pozzolan's effectiveness, is typically assessed using the strength activity index, as defined in ASTM C 618-93, which calculates the ratio of the compressive strength of cement mixtures with and without pozzolan.
Fly ash is...
Fly ash is...
101
01:29Additives and Fillers in Concrete
89
Additives and fillers are integral to enhancing the properties of concrete. Pozzolans and blast-furnace slag are additives or admixtures due to their reactions with calcium hydroxide released during cement hydration. Fillers, which are finely ground and similar in fineness to Portland cement, improve concrete attributes such as workability density, and reduce capillary bleeding or cracking. Some fillers possess hydraulic properties or participate in benign reactions within the cement paste.
The...
The...
89