生物质聚碳酸超塑剂的合成及其对基于水泥的材料的性能
Zefeng Kou1, Kaijian Huang1, Muhua Chen2
1College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China.
Materials (Basel, Switzerland)
|July 30, 2025
概括
这项研究开发了一种可持续的混凝土添加剂,使用生物质衍生的乙烯基纤维素 (AHEC) 作为聚碳酸超塑剂 (PCE) 中石油化学品的部分替代品. 新的PCE-Cs在水泥材料中提供了优异的降水和强度增强.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续化学 可持续化学
- 土木工程 土木工程是指土木工程.
背景情况:
- 聚碳酸超塑化剂 (PCE) 对混凝土性能至关重要,但严重依赖石化产品,引发环境问题.
- 越来越多的混凝土需求需要可持续的替代品来减少对不可再生化石资源的依赖.
- 生物质材料为化学合成提供了一种可再生,具有成本效益和环保的来源.
研究的目的:
- 为了合成生物质聚碳酸超塑化剂 (PCE-Cs),使用来自纤维素的烯酸乙烯纤维素 (AHEC).
- 评估PCE-Cs在水泥应用中作为常规聚乙烯单体的部分替代品的性能.
- 促进建筑材料行业对生物质资源的高价值利用.
主要方法:
- 从纤维素中通过乙烯氧化物 (EO) 乙化和酸 (AA) 乙化合成的烯酸 (AHEC).
- 通过自由基聚合,开发出生物质聚碳酸超塑剂 (PCE-Cs),以AHEC替代异丁聚氧乙烯 (TPEG).
- 研究了PCE-Cs与水泥相关的特性,重点是减少水分,定时间和机械强度.
主要成果:
- 合成的PCE-C5,具有5%的AHEC替代比率,在0.4%的剂量下表现出有效的降水和显著的设置延迟特性.
- PCE-C5提高了水泥砂的机械强度30%至40%,同时保持了相同的流动性.
- 该研究证实了使用绿色生物质资源用于高性能混凝土添加剂的可行性.
结论:
- 来自生物质的PCE-C为传统超级增塑剂提供了可持续和有效的替代品.
- 开发的PCE-Cs有助于减少混凝土行业的化石燃料消耗和环境污染.
- 这项研究强调了生物质资源在制造先进建筑材料方面的重大应用潜力.
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