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Effect of the Proportion of Bamboo Scraps on the Properties of Bamboo Scraps/magnesium oxychloride Composites

Journal of Renewable Materials 2021年第10期9卷 1729-1739页

作者： Long Zheng Yiqiang Wu Shu Wang Guoan Sheng Baorong Sun Yingfeng Zuo College of Materials Science and Engineering Central South University of Forestry and TechnologyChangsha410004China

This study was designed to solve the problem of large waste volume from bamboo processing residues in recent *** magnesium oxychloride(MO)cementitious material as the main material and bamboo residue(BR)as the reinforcing material,a BR/MO composite material was *** effects of BR amount on the molding properties,mechanical strength,and water resistance of BR/MO composites were examined and *** electron microscopy(SEM),X-ray diffractometry(XRD),and thermogravimetric analysis were used to characterize composite microscopic morphology,crystalline structure,and heat *** results showed that,when the BR content was 1.00%(by wt),the flowability of MO paste was beneficial to composite *** mechanical properties and water resistance were greatly affected by BR *** the BR content was 1.00%,composite compressive and bending strengths and softening coefficient all reached maximum ***,increases in water absorption by 24 h and decreases of contact angle were *** results suggested that,when the BR content was 1.00%,composite mechanical properties and water resistance were the best and the mechanical strength also improved with extended composite storage *** analysis indicated that BR played the role of a reinforcing phase in MO ***,when the BR content exceeded 1.00%,interfacial bonding between BR and MO became *** analysis showed that,with 1.00%BR content,composites showed more 5-phase crystals with high *** further explained the reason why this composite’s mechanical properties were the best and the heat resistance not deteriorated due to BR,which was easily decomposed.

关键词： Bamboo scraps magnesium oxychloride cementation mechanical properties water resistance interface bonding crystal structure

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