聚合物矩阵复合材料:描述环境因素对其寿命的影响
Rui Barreira-Pinto1, Rodrigo Carneiro1, Mário Miranda1
1Departamento de Engenharia Mecânica Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
Materials (Basel, Switzerland)
|June 10, 2023
概括
环境因素,如水,紫外线辐射和温度周期显著降解聚合物复合材料. 这种在微观结构层面发生的损伤降低了疲劳和爬行性能,导致更早的材料故障.
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
- 环境退化 环境退化
背景情况:
- 聚合物矩阵复合材料在工程中至关重要,但易受环境退化影响.
- 微观结构机制导致宏观疲劳和爬行性能损失.
- 各种环境因素加快了复合损坏.
研究的目的:
- 分析环境因素对聚合物矩阵复合材料的影响.
- 详细说明降解机制,包括吸水,紫外线辐射,温度周期和生物降解.
- 为了评估热,热塑性和生物聚合物矩阵的这些效应.
主要方法:
- 分析吸水效应 (膨胀,水解).
- 研究海水加速损伤机制的研究.
- 检查腐蚀剂,紫外线辐射,温度周期和微生物降解影响.
- 在环氧,乙烯基,聚,聚烯,聚胺,聚乙基,聚乳酸,热塑性粉和聚酸酸盐中进行评估.
主要成果:
- 环境因素显著降低了疲劳和爬行性能.
- 机制包括胀,水解,溶解,键断裂,脆化和微裂纹.
- 降解会改变机械性能,并诱导应力度,导致过早的故障.
- 生物聚合物表现出微生物和酶降解.
结论:
- 环境因素严重损害了聚合物矩阵复合材料的性能.
- 了解这些降解途径对于材料的选择和设计至关重要.
- 建议对各种矩阵和标准化测试进行进一步的研究.
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