Carbon foams prepared from coal tar pitch for building thermal insulation material with low cost

doi:10.1016/j.cjche.2017.04.012

Chin.J.Chem.Eng. ›› 2018, Vol. 26 ›› Issue (2): 415-420.DOI: 10.1016/j.cjche.2017.04.012

• Materials and Product Engineering • Previous Articles Next Articles

Carbon foams prepared from coal tar pitch for building thermal insulation material with low cost

Xiang Liu^1,2,3, Yanli Wang^1,2,3, Liang Zhan^1,2,3,4

1 State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
2 Key Laboratory for Specially Functional Polymers and Related Technology of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China;
3 Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
4 CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China

Received:2017-02-13 Revised:2017-04-19 Online:2018-03-16 Published:2018-02-28
Contact: Liang Zhan
Supported by:
Supported by the National Natural Science Foundation of China (51472086, 51002051) and CAS Key Laboratory of Carbon Materials (No KLCMKFJJ1703).

Carbon foams prepared from coal tar pitch for building thermal insulation material with low cost

Xiang Liu^1,2,3, Yanli Wang^1,2,3, Liang Zhan^1,2,3,4

1 State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
2 Key Laboratory for Specially Functional Polymers and Related Technology of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China;
3 Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
4 CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China

通讯作者: Liang Zhan
基金资助:
Supported by the National Natural Science Foundation of China (51472086, 51002051) and CAS Key Laboratory of Carbon Materials (No KLCMKFJJ1703).

Abstract

Abstract: A new approach is provided to resolve the large-scale applications of coal tar pitch. Carbon foams with uniform pore size are prepared at the foaming pressure of normal pressure using coal tar pitch as raw materials. The physical and chemical performance of high softening point pitch (HSPP) can be regulated by vacuumizing owing to the cooperation of vacuumizing and polycondensation. Results indicate that the optimum softening point and weight ratio of quinoline insoluble are about 292℃ and 65.7%, respectively. And the optimum viscosity of HSPP during the foaming process is distributed in the range of 1000-10000 Pa·s. The resultant carbon foam exhibits excellent performance, such as uniform pore structure, high compressive strength (4.7 MPa), low thermal conductivity (0.07 W·m^-1·K^-1), specially, it cannot be fired under the high temperature of 1200℃. Thus, this kind of carbon foam is a potential candidate for thermal insulation material applied in energy saving building.

Key words: Carbon foam, Coal tar pitch, Building thermal insulation materials

摘要： A new approach is provided to resolve the large-scale applications of coal tar pitch. Carbon foams with uniform pore size are prepared at the foaming pressure of normal pressure using coal tar pitch as raw materials. The physical and chemical performance of high softening point pitch (HSPP) can be regulated by vacuumizing owing to the cooperation of vacuumizing and polycondensation. Results indicate that the optimum softening point and weight ratio of quinoline insoluble are about 292℃ and 65.7%, respectively. And the optimum viscosity of HSPP during the foaming process is distributed in the range of 1000-10000 Pa·s. The resultant carbon foam exhibits excellent performance, such as uniform pore structure, high compressive strength (4.7 MPa), low thermal conductivity (0.07 W·m^-1·K^-1), specially, it cannot be fired under the high temperature of 1200℃. Thus, this kind of carbon foam is a potential candidate for thermal insulation material applied in energy saving building.

关键词: Carbon foam, Coal tar pitch, Building thermal insulation materials

Xiang Liu, Yanli Wang, Liang Zhan. Carbon foams prepared from coal tar pitch for building thermal insulation material with low cost[J]. Chin.J.Chem.Eng., 2018, 26(2): 415-420.

Xiang Liu, Yanli Wang, Liang Zhan. Carbon foams prepared from coal tar pitch for building thermal insulation material with low cost[J]. Chinese Journal of Chemical Engineering, 2018, 26(2): 415-420.

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Carbon foams prepared from coal tar pitch for building thermal insulation material with low cost

Carbon foams prepared from coal tar pitch for building thermal insulation material with low cost

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