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| Preparation and Sanding–fixing Properties of A New–type Environment Friendly Sand–fixing Agent |
| YANG Mingkun1, WANG Fanghui1, YAO Yang2, ZHU Hong1 |
1.State Key Laboratory of Organic-Inorganic Composites, School of Science, Beijing University of Chemical Technology, Beijing 100029
2.Beijing Guangqumen Middle School, Beijing 100062 |
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Cite this article:
YANG Mingkun WANG Fanghui YAO Yang ZHU Hong. Preparation and Sanding–fixing Properties of A New–type Environment Friendly Sand–fixing Agent. Chin J Mater Res, 2012, 26(3): 225-230.
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Abstract A new–type environment friendly sand-fixing agent of sodium carboxymethyl cellulose (CMC) grafted onto acrylamide was synthetized and characterized. The effects of the ratio of CMC to acrylamide, initiator concentration, reaction time, initial temperature and starting pH on the sanding-fixing properties were investigated. The results showed that as the ratio of CMC to acrylamide increased, the thickness of solidified layer and water retention increased gradually and the strength and water resistance first increased and then decreased. And when the ratio was 2:1, the strength and water resistance were the best and the thickness and water retention of the solidified layer reached balance; as the concentration of initiator increased, the thickness of the solidified layer, strength and water resistance first increased and then decreased, water retention increased gradually, and when the concentration of initiator was 0.15 g/L, the thickness, strength and water resistance of the solidified layer were the best, and water retention reached equilibrium. The cellulose long–chain of CMC makes the sand-fixing agent with good adhesive and film–forming property; the hydrogen bonding of the strong hydrophilic amino in acrylamide makes the sand–fixing agent with excellent water retention and hydroscopicity; the complexation of the carbonyl on chain and the inorganic ions on sandy soil could increase the adhesive and film–forming
properties.
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Received: 30 March 2012
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| Fund: Supported by National Natural Science Foundation of China No.21176022. |
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