关于聚合物化学添加剂与空气石灰中的相变材料相互作用的研究
Andrea Rubio-Aguinaga1, José María Fernández1, Íñigo Navarro-Blasco1
1MATCH Research Group, Department of Chemistry, School of Sciences, University of Navarra, Irunlarrea, 1, 31008 Pamplona, Spain.
Polymers
|April 27, 2024
概括
这项研究研究了空气石灰染器中的微封装相变材料 (PCM). 聚乙烯超塑剂改善了PCM的分散性和可加工性,而基于粉的添加剂导致了凝聚,优化了染配方.
科学领域:
- 材料科学 材料科学 材料科学
- 建筑化学 建筑化学
- 建筑物理 建筑物理
背景情况:
- 微封装相变材料 (PCM) 在建筑材料中提供热能储存潜力.
- 将PCM集成到空气矩阵中带来了诸如分散性差和可加工性降低等挑战.
- 基于聚合物的添加剂正在探索以提高兼容性和性能.
研究的目的:
- 为了研究微封装PCM和聚合物添加剂 (基于粉的粘附增强剂,聚碳酸乙烯超可塑化剂) 在空气矩阵中的相互作用.
- 了解这些组件的兼容性和行为,以优化空气石灰染配方.
- 为解决与PCM在迫击炮中的整合相关的常见问题.
主要方法:
- 微囊的特征 (胺外,芯) 的点在18°C和24°C.
- 添加剂-PCM-石灰相互作用的分析,使用泽塔潜力,粒子大小分布,吸附异温和粘度.
- 用不同的PCM和添加剂剂量制备和测试空气.
主要成果:
- 泽塔电位测量表明,由于性pH的阴离子屏蔽,PCM在石灰矩阵中的稳定分散.
- 聚碳酸乙烯有效抵消了增加的水需求和分散的PCM,改善了流动性.
- 基于粉的添加剂导致PCM和石灰颗粒的聚合,形成团块并对性能产生负面影响.
结论:
- 聚碳酸乙烯超塑剂有效地稳定了空气染器内的微封装PCM,提高了分散性和可加工性.
- 基于粉的添加剂由于聚合问题而不适合此应用.
- 结合PCM和聚碳酸乙烯的优化配方可以克服诸如粘合性差和空气石灰染器中裂纹等挑战.
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