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Author(s): |
Dong-lin Ma, College of Computer and Communication, Lanzhou University of Technology, LanZhou 730050, China
Jing-wei Guo, College of Petrochemical Engineering, Lanzhou University of Technology, LanZhou 730050, China
Jian Li, College of Petrochemical Engineering, Lanzhou University of Technology, LanZhou 730050, China
Han-feng Li, College of Petrochemical Engineering, Lanzhou University of Technology, LanZhou 730050, China
Hui-xia Feng, College of Petrochemical Engineering, Lanzhou University of Technology, LanZhou 730050, China |
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Abstract: |
The modified reaction for free-NCO group to the hydroxyl group (-OH) of montmorillonite was investigated in this article. The effects of reaction conditions: such as reaction time, reaction temperature, the mass of TDI and the activated condition of montmorillonite on reaction extent were discussed by the method of single factor experiment. The optimum modified conditions should be as follows: reaction time 80min, reaction temperature 80℃, the mass ratio of montmorillonite to toluene-2,4-diisocyanate 1:0.3, montmorillonite activated condition (250℃, 2h)and the reaction extent could reach 34.28℅.Besides, the modification product(TDI/MMT)was characterized by IR, XRD and TG techniques. The results were showed that: TDI was successfully reacted with the hydroxyl group of montmorillonite layers and the free-NCO group successfully remained on the surface of montmorillonite, also, the interlayer distance of modification product was increased further, consequently the montmorillonite was organic modification achievely.
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