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聚乙烯四甲酸盐基复合材料与回收片和耐化学物质的玻璃纤维用于建筑

Krzysztof Adam Ostrowski¹, Paulina Romańska^2,3, Radosław Piech^3,4,5

¹Faculty of Civil Engineering, Cracow University of Technology, ul. Warszawska 24, 31-155 Cracow, Poland.

|November 27, 2025

概括

在性环境中,选择合适的玻璃纤维 (GF) 用于聚乙烯二甲 (PET) 复合材料至关重要. 软尺寸的抗 (AR) 纤维比硬尺寸的电/化学抗 (ECR) 纤维具有更好的机械性能和可加工性.

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
复合材料复合材料复合材料

背景情况:

聚乙烯二甲 (PET) 是一种多用途的聚合物,但其在水泥环境中的应用需要增强的性能.
玻璃纤维 (GF) 通常用作钢筋,但它们与性介质的相互作用和加工特性至关重要.
消费后的PET片为复合材料制造提供了可持续的原料.

研究的目的:

评估两种不同类型的玻璃纤维对PET复合材料的热,机械和形态性能的影响.
为了比较具有软尺寸 (SGF) 的抗 (AR) 纤维与具有硬尺寸 (HGF) 的电/化学抗 (ECR) 纤维.
为了确定用于性环境中成型的PET复合材料的最佳GF含量.

主要方法:

使用消费后PET片制备以PET为基础的复合材料,含有不同含量的SGF和HGF (10-60%).
使用差分扫描热量计 (DSC) 进行对热性质和结晶动力学进行表征.
热重力测量分析 (TGA) 用于评估热稳定性.
机械测试包括拉伸,曲和冲击强度测量.
扫描电子显微镜 (SEM) 用于纤维分布和空隙的形态分析.

主要成果:

与HGF相比,AR纤维 (SGF) 显示出更大的加工诱导的缩短,导致实际纤维含量较低.
SGF复合材料表现出增强的结晶动力学,更高的结晶度和更高的结晶温度 (206-208°C与196-197°C相比).
这两种GF类型的热稳定性都比纯PET更好,主要受纤维含量的影响.
高合金复合材料实现了更高的弹性模量 (SGF-50的20.6 GPa与18.3 GPa相比).
尽管纤维含量略低,但SGF复合材料表现出优越的拉伸,曲和冲击强度 (10-20%更高).
在SGF复合材料中,SEM揭示了更均的纤维分布和更少的空隙.

结论:

玻璃纤维类型的选择及其尺寸显著影响PET复合材料在性环境中的性能.
软尺寸的AR纤维 (SGFs) 为这些应用提供了更好的机械强度,热性能和形态平衡.
优化GF选择是最大限度地提高性能的关键,同时考虑复合材料设计中的可加工性和经济因素.

关键词:

耐纤维是耐的纤维复合微观结构的复合微观结构结晶行为结晶行为.纤维大小测量纤维大小测量影响绩效影响绩效.机械性能机械性能机械性能聚乙烯四甲酸的使用情况.回收PET的回收使用.热降解降解的热性降解

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