发明名称 |
Highly concentrated nano-reinforcement suspensions for cementitious materials and method of reinforcing such materials |
摘要 |
Highly concentrated carbon nanotube or other nano-reinforcement suspensions and/or masses are prepared for use as admixtures in cement base materials to make cementitious composite materials. |
申请公布号 |
US8865107(B2) |
申请公布日期 |
2014.10.21 |
申请号 |
US201113135004 |
申请日期 |
2011.06.22 |
申请人 |
Northwestern University |
发明人 |
Hersam Mark C.;Seo Jung-Woo T.;Shah Surendra P.;Konsta-Gdoutos Maria S.;Metaxa Zoi S. |
分类号 |
C01B31/02;C04B28/02;C04B14/02;C04B40/00;C04B111/34 |
主分类号 |
C01B31/02 |
代理机构 |
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代理人 |
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主权项 |
1. A method for producing reinforced cement-based materials comprising a concentrated suspension of multiwall carbon nanotubes (MWCNTs), comprising the steps of:
(a) providing a first solution, said first solution comprising water and surfactant; (b) creating a second solution by dispersing said MWCNTs in said first solution, wherein said second solution has a first UV-vis-NIR absorbance value, and wherein the concentration of MWCNTs in said second solution is less than or equal to 0.16 weight %; (c) creating a third solution by ultracentrifuging said second solution,
wherein said third solution comprises a concentrated portion and a non-concentrated portion,
wherein said concentrated portion has a second UV-vis-NIR absorbance value, and said second UV-Vis-NIR absorbance value is between 3.13 and 4.87 times said first UV-vis-NIR absorbance value; and (d) removing said non-concentrated portion from said third solution to create said concentrated suspension of MWCNTs. |
地址 |
Evanston IL US |