Heat resistance study of basalt fiber material via mechanical tests

6th Global Conference on Materials Science and Engineering

Gao, Y.Q.^1 ; Jia, C.^1 ; Meng, L.^1 ; Li, X.H.^1

Hebei University of Science and Technology, China^1

关键词: Basalt fiber;    Basalt materials;    Breaking strength;    Fixed temperature;    Heat treatment time;    Heating time;    Local maximum;    Temperature strength;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/283/1/012016/pdf
DOI  :  10.1088/1757-899X/283/1/012016

来源: IOP

【 摘 要 】

This paper focuses on the study of the relationship between the fracture strength of basalt rovings and temperature. Strong stretching performance of the rovings has been tested after the treatment at fixed temperatures but different heating time and then the fracture strength of the rovings exposed to the heating at different temperatures and cooled in different modes investigated. Finally, the fracture strength of the basalt material after the heat treatment was studied. The results showed that the room-temperature strength tends to decrease with an increase of the heat treatment time at 250 °C, but it has the local maximum after 2h heating. And the basalt rovings strength increased after the heat treatment up to 200 °C. It was 16.7 percent higher than the original strength. The strength depends not only on the temperature and duration of the heating, but also on the cooling mode. The value of the strength measured after cold water cooling was less by 6.3% compared with an ambient air cooling mode. The room-temperature breaking strength of the rovings heated at 200 °C and 100 °C for 2 hours each increased by about 14.6% with respect to unpretreated basalt rovings.