Preliminary exploration of the mechanism governing the cell structure variation of mesophase coal pitch/carbon black composite carbon foam

被引：16

作者：

Wang, Yuzhe ^{[1
]}

Li, Minhui ^{[1
]}

Zhao, Zhenning ^{[1
]}

Xu, Guozhong ^{[1
]}

Ge, Yuanyuan ^{[1
]}

Wang, Shuaidong ^{[1
]}

Bai, Jinfeng ^{[1
]}

机构：

[1] Univ Sci & Technol Liaoning, Liaoning Prov Res Ctr Coal Chem Engn, Sch Chem Engn, Liaoning Prov Profess Tech Innovat Team Coal Chem, Anshan 114051, Peoples R China

来源：

关键词：

Carbon foam; Heterogeneous nucleation; Carbon black; Mesophase pitch; MICROCELLULAR THERMOPLASTIC FOAM; SUCROSE; NUCLEATION; MICRO; SPECTROSCOPY; TEMPERATURE; PERFORMANCE; ADDITIVES; PRESSURE; STRENGTH;

D O I：

10.1016/j.diamond.2023.110077

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The application of carbon foam, such as microwave absorption, electromagnetic shielding, catalyst carrier etc., has recently received great attention due to its adjustable pore cell structure. However, the pore cell density of carbon foam is far from being accurately regulated, namely, the mechanism governing the cell density of carbon foam is still unclear. This problem has become one of the bottlenecks limiting the practical application of carbon foam. Herein, a carbon foam of mesophase coal pitch/carbon black (MP/CB) composite was fabricated by highpressure pyrolysis. The dependence of pore cell density on the temperature, pressure, and quantity of carbon black, was investigated. It was found that nucleation rate of carbon foam can be expressed by a heterogeneous nucleation equation of microcellular plastics. The governing mechanism of the cell formation of carbon foam is similar to that of microporous plastics. The finding points out the direction to the study of the foaming mechanism of carbon foam by high-pressure pyrolysis. In addition, we found that the higher the pore cell density of carbon foam, the higher the compressive strength.

引用

页数：13

共 43 条

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