氧化石墨烯对水泥水化产物及聚集状态的调控作用
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TU528.572

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国家自然科学基金项目(面上项目)(21276152);陕西省科技统筹资源引导项目(2016KTCL01-14)


Regulation of graphene oxide on cement hydration products and its aggregate
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    摘要:

    :以石墨为主要原料,通过氧化及超声波分散制备得到了GO纳米片层,检测结果表明GO纳米片层尺寸在30-900nm范围,GO上羟基和羧基的含量分别为22.1%和29.4%。将GO掺入水泥基复合材料,在GO掺量为水泥质量的0.03%时,SEM检测结果表明水泥复合材料中水泥基体在整体上主要成为由多面体状产物通过相互交织、嵌入等方式形成的带有花型图案的规整致密的微观结构,与对照样比较其28天时平均抗折强度和抗压强度增加了93.9%和80.0%。

    Abstract:

    Graphene oxides (GO) nanosheets were prepared with graphite as main raw materials by oxidizing reaction and ultrasonic dispersion. The testing results indicate that GO size is in the range of 30-900nm and the content of hydroxyl and carboxyl are 22.1% and 29.4%. The 0.03% according to cement weight is doped in cement composites, SEM results indicate that the whole cement matrix in cement composites has ordered dense microstructure with flower-liked patterns consisted by polyhedron-like crystals with interwarving and inserting. The flexural and compressive strength of the corresponding cement composites at 28 days increase 93.9% and 80.0%, respectively.

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吕生华.氧化石墨烯对水泥水化产物及聚集状态的调控作用[J].精细化工,2017,34(5):

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历史
  • 收稿日期:2016-09-01
  • 最后修改日期:2016-10-12
  • 录用日期:2016-12-05
  • 在线发布日期: 2017-04-07
  • 出版日期: