从建筑行业的废物到高性能绝缘:可持续的刚性聚氨泡与回收聚合物聚合物
Kinga Wieczorek1,2, Łukasz Bobak3, Przemysław Bukowski1
1Institute of Agricultural Engineering, Wrocław University of Environmental and Life Sciences, 37 Chełmońskiego Str., 51-630 Wroclaw, Poland.
Materials (Basel, Switzerland)
|September 13, 2025
概括
来自建筑物聚氨废物的化学回收聚烯可以用于用于隔热的刚性泡中. 这种可持续的方法提高了泡的性能,例如强度,并减少了对环境的影响.
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
- 可持续工程 可持续工程
背景情况:
- 来自建筑行业的聚氨 (PU) 废物带来了处置挑战.
- 开发用于PU材料的循环经济战略对于可持续性至关重要.
- 刚性PU泡对于隔热至关重要,但初始材料的生产带来了环境成本.
研究的目的:
- 评估在刚性泡配方中使用来自PU废物的化学回收聚合物 (甘酸盐) 的可行性.
- 为了评估糖化酸盐结合对泡性能和性能的影响.
- 确定绝缘材料的资源效率和减少碳足迹的潜力.
主要方法:
- 半刚性PU废弃物的化学回收,通过糖解将其转化为聚 (糖化).
- 固体PU泡的配方,其中有不同百分比 (5-50%) 的回收聚合物.
- 泡属性的表征:发泡动力学,细胞结构,导热性,机械强度,尺寸稳定性,易燃性和VOC排放.
主要成果:
- 糖酸盐的合并加速了泡和减少了催化剂的要求.
- 在高达40%的回收聚合物替代品中,保持了高的封闭细胞含量 (87.7%),低的导热率 (26.3 mW / μm·K) 和优异的尺寸稳定性 (<1%).
- 压力强度增加了30% (294kPa与208kPa相比),可燃性达到B2分类,没有检测到额外的有害VOC.
结论:
- 循环聚 (甘酸盐) 是高性能刚性PU绝缘泡的可行组成部分.
- 使用甘酸盐提高了资源效率,并有助于减少碳足迹.
- 这项研究表明,将PU废弃物价值化为有价值的绝缘材料是一个有希望的途径.
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