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含有米骨灰的聚烯胺和点氨酸的基:在材料的配方中制备,表征和应用
Ruth Hevellen Sousa Rodrigues1, Edson Araujo de Almeida2, Fábio Rodrigo Kruger3
1Chemistry Postgraduation Program, Federal University of Piaui-UFPI, Teresina 64049-550, PI, Brazil.
Materials (Basel, Switzerland)
|December 17, 2024
概括
超吸收性聚合物 (PSA) 通过可控释放水分来增强水泥的水分. 将PSA添加到砂中提高了机械强度,0.06%的含量在本研究中显示出最佳性能.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 聚合物化学 聚合物化学
背景情况:
- 超吸收性聚合物 (PSA) 以其吸水和释放能力而闻名,使其适合在水泥材料中进行内部固化.
- 从PSA中控制水分释放有助于水化水泥,在巩固过程中改善材料的性能.
- 基于聚烯胺 (PAAm),pectin (Pec) 和大米灰 (RHA) 的水凝被合成,用于在水泥基层中应用.
研究的目的:
- 合成和表征新型水凝,用于在水泥材料中作为内部固化剂.
- 评估不同PSA水凝含量对砂机械性能的影响.
- 调查这些水凝在增强水泥水化和机械电阻方面的作用.
主要方法:
- 使用聚烯胺 (PAAm),pectin (Pec) 和米灰 (RHA) 合成水凝.
- 合成的PSAs的表征使用福利埃转换红外光谱 (FTIR),扫描电子显微镜 (SEM) 和X射线衍射 (XRD).
- 用不同的PSA水凝含量 (0.03%,0.06%,0.1%按重量) 准备砂样本,并在7日和28日评估机械强度.
主要成果:
- 与参考砂相比,将PSA添加到砂中导致机械阻力增加.
- 含有0.06%的PSA水凝的砂样本表现出最高的机械性能,在7天增加4.07%并在28天增加8.06%.
- 鉴定证实了合成的水凝的特性,支持它们作为内部固化剂的功能.
结论:
- 合成的PSA有效地作为固化材料中的内部固化剂.
- 加入PSA,特别是含量为0.06%的PSA,显著提高了砂的机械阻力.
- 这项研究证明了PAAm-Pec-RHA水凝在增强水泥水化和水泥复合材料的耐用性方面的潜力.
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