通过机械化学内部混合聚合,开发一种新的,绿色的,高效的聚碳酸超塑剂合成方法
Qianqian Chen1, Xiaomiao Li1, Lisha Pan1
1School of Chemistry and Chemical Engineering, Hainan University, Haikou 570228, China.
Polymers
|April 26, 2025
概括
一种新的机械化学方法可以高效地合成高度聚碳酸超塑剂 (PCE). 这种绿色方法在混凝土生产中显著降低了能源消耗,同时保持了与传统方法相比的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 土木工程 土木工程是指土木工程.
背景情况:
- 聚碳酸超塑性剂 (PCE) 是水泥和混凝土中的关键聚合物添加剂.
- 开发用于PCE的新,绿色和节能合成方法对于可持续建筑是必不可少的.
- 目前用于PCE的水溶液聚合方法通常会导致低度和高能耗.
研究的目的:
- 开发一种新的,绿色的,高能效的合成方法,用于高度PCE (INPCE) 使用机械化学内部混合聚合.
- 为INPCE合成优化反应参数,包括温度,速度,时间和反应剂度.
- 为了比较INPCE与传统合成PCE (TPCE) 的性能和能耗.
主要方法:
- 机械化学内部混合聚合首次用于合成PCEs.
- 使用直角实验设计来确定最佳反应条件 (温度,速度,时间).
- 福里埃变换红外光谱法 (FT-IR) 和凝透色谱法 (GPC) 用于分子结构的表征.
- 性能评估包括测试水泥的流动性,并将INPCE与TPCE进行比较.
主要成果:
- 最佳合成条件被确定为60°C,70 R/min和60分钟.
- 合成的INPCEs的度达到99.00%以上,明显高于TPCE (39.73%).
- 在0.20重量%的剂量下,INPCE的初始流动性为312.5mm,分散和保留特性与TPCE相似.
- 与水溶液聚合相比,机械化学方法的能量消耗大大降低.
结论:
- 机械化学内部混合聚合是一种可行和节能的方法,用于生产高度的PCE.
- 开发的INPCE提供了与传统PCE相美的性能,且能耗显著降低.
- 这种方法有可能减少混凝土行业的整体能源消耗.
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