Study on the macro- and micro-mechanical properties of quartz fiber reinforced polyimide resin matrix composite after thermal aging

Chen Xiaofei; Liu Haitao; Jiang RuBai Huizhen

首页> 外文期刊>Composite structures >Study on the macro- and micro-mechanical properties of quartz fiber reinforced polyimide resin matrix composite after thermal aging

【24h】

Study on the macro- and micro-mechanical properties of quartz fiber reinforced polyimide resin matrix composite after thermal aging

机译：Study on the macro- and micro-mechanical properties of quartz fiber reinforced polyimide resin matrix composite after thermal aging

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

In this work, the polyimide resin (YH-550) with high glass transition temperature (similar to 403 degrees C) was selected as the matrix, and the quartz fiber reinforced polyimide resin matrix (SiO2f/PI) composite was prepared by prepreg hot pressing method. In order to obtain the evolution mechanism of macro-and micro-mechanical properties of the SiO2f/PI composite after thermal aging, the composite was first subjected to thermal aging at 250 degrees C and 350 degrees C for 100 h (SiO2f/PI-250 degrees C, SiO2f/PI-350 degrees C) in air, respectively. And then the as-received SiO2f/PI, SiO2f/PI-250 degrees C and SiO2f/PI-350 degrees C composite was tested by SEM, macro-mechanics, nano-mechanics and XPS. Thus, the macro-and micro-mechanical properties of the SiO2f/PI composite were constructed. The results show that the SiO2f/PI-250 degrees C composite still has excellent mechanical properties. However, the flexural strength of SiO2f/PI-350 degrees C composite decreases remarkably (similar to 227.7 MPa). The in-situ modulus of fiber and matrix in as-received SiO2f/PI, SiO2f/PI-250 degrees C and SiO2f/PI-350 degrees C composite do not change significantly, but interfacial shear strength (IFSS) changes greatly, which are 106.7 +/- 2.0 MPa, 97.0 +/- 8.3 MPa and 14.7 +/- 0.7 MPa, respectively. Based on the basic mechanical theory of composites, it is concluded that the decrease of IFSS is the fundamental reason for mechanical properties degradation of SiO2f/PI-350 degrees C composite, and the interface evolution mechanism of the composite was discussed.

著录项

来源
《Composite structures》 |2022年第7期|115666.1-115666.8|共8页
作者
Chen Xiaofei; Liu Haitao; Jiang RuBai Huizhen;
展开▼
作者单位

Hunan Univ Sci & Technol, Sch Phys & Elect Sci, Xiangtan 411021, Peoples R China|Hunan Univ Sci & Technol, Key Lab Intelligent Sensors & Adv Sensing Mat Huna, Xiangtan 411021, Peoples R China;

Natl Univ Def Technol, Elect Countermeasure Inst, Hefei 230037, Peoples R China;

Natl Univ Def Technol, Coll Aerospace Sci & Engn, Sci & Technol Adv Ceram Fibers & Composites Lab, Changsha 410073, Peoples R China;

展开▼
收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类
关键词
Polyimide resin matrix composite; Micro-mechanical properties; Quartz fiber; Interface; Thermal aging; Flexural strength;

Study on the macro- and micro-mechanical properties of quartz fiber reinforced polyimide resin matrix composite after thermal aging

摘要

著录项

相关主题

期刊订阅