Porous carbon block material having high elasticity and high gas tightness and method for preparing the same

Patent metadata

Field	Value
Publication number	US-12024432-B2
Application number	US-202217842276-A
Country	US
Kind code	B2
Filing date	Jun 16, 2022
Priority date	Sep 30, 2021
Publication date	Jul 2, 2024
Grant date	Jul 2, 2024

Abstract

The application provides a porous carbon block material having high elasticity and high sealing, and provides a method for preparing the same. Particularly, the present application provides a porous carbon block material, wherein the porous carbon block material has a pore size in the range of from 3 nm to 100 nm, a porosity of from 50% to 87%, and the pores in the material are closed pores. In addition, the application provides a method for preparing the porous carbon block material according to the present application. The porous carbon block material according to the present application has small pore size, high porosity, and closed pores, and thus has high strength combined with high elasticity, high sealing property, and low density. Hence, the porous carbon block material according to the present application may be used as a sealing material.

First claim

What is claimed is:

1. A porous carbon block material, wherein
the porous carbon block material has a pore size in the range of from 3 nm to 100 nm;
the porous carbon block material has a porosity of from 50% to 87%;
the pores in the porous carbon block material are closed pores; and
the porous carbon block material has a density of from 0.3 g/cm 3 to 1.1 g/cm 3 .

2. The porous carbon block material according to claim 1 , wherein,
the porous carbon block material has a compressive strain of ≥5%; and/or
the porous carbon block material has a compressive strength of >100 MPa.

3. The porous carbon block material according to claim 1 , wherein
the porous carbon block material has a helium gas leakage rate of ≤10×10 −5 Pa·m 3 /s.

4. The porous carbon block material according to claim 1 , wherein
the porous carbon block material has the pore size in the range of from 5 nm to 50 nm; and
the porous carbon block material has the porosity of from 56% to 82%.

5. The porous carbon block material according to claim 4 , wherein
the porous carbon block material has the pore size in the range of from 5 nm to 30 nm; and
the porous carbon block material has the porosity of from 60% to 80%.

6. The porous carbon block material according to claim 3 , wherein
the porous carbon block material has the helium gas leakage rate of ≤4×10 −5 Pa·m 3 /s.

7. The porous carbon block material according to claim 6 , wherein
the porous carbon block material has the helium gas leakage rate of ≤2×10 −5 Pa·m 3 /s.

8. The porous carbon block material according to claim 2 , wherein,
the porous carbon block material has the compressive strain of ≥ 6%; and/or
the porous carbon block material has the compressive strength of >150 MPa.

9. The porous carbon block material according to claim 1 , wherein
the porous carbon block material has the density of from 0.4 g/cm 3 to 1.0 g/cm 3 .

10. The porous carbon block material according to claim 9 , wherein
the porous carbon block material has the density of from 0.5 g/cm 3 to 0.9 g/cm 3 .

Assignees

• Univ Yanshan

Inventors

• Zhao Zhisheng
• Wu Yingju
• Liang Zitai
• Zhang Yang
• Wang Xiaoyu
• Zhuge Zewen
• He Julong
• Yu Dongli
• Xu Bo
• Tian Yongjun

Classifications

• C01P2004/84

  one phase coated with the other · CPC title

• C01P2004/04

  obtained by TEM, STEM, STM or AFM · CPC title

• C01P2002/72

  by d-values or two theta-values, e.g. as X-ray diagram · CPC title

• C01P2006/10

  Solid density · CPC title

• C01P2002/60

  Compounds characterised by their crystallite size · CPC title