Control of the Spring Back in Rice Husk by Al2O3 Sol

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The effects of Al2O3 sol on the mechanical, morphological, and water sorption properties of rice husk were studied by means of compression-strain tester, and scanning electron microscopy (SEM) associated with the energy spectrum analysis. The results showed that the spring back of materials is found to decrease with increasing coating concentration. With the increase in Al2O3 sol concentration, the gaining of mass fraction of the materials increased proportionally, while the water absorption, which measured at ambient temperature, was gradually decreased with increasing Al2O3 sol concentrations. The gaining of mass fraction, lowest water absorption and lowest of compressive recovery ratio of 10.15%, 34.5% and 16.58%, respectively, were obtained when Al2O3 sol solid content was 8%, and resulted mainly from an increase in the rigidity increase. The Al2O3 sol had a positive effect on the morphology stabilization of rice husk.

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124-128

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July 2016

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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