冷库保温层下面选用挤塑板，核心是因为它具备低导热系数、高抗压强度、低吸水率的特性，能同时满足冷库地面保温、承重、防潮的多重需求。
冷库保温层下面为什么要用挤塑板
冷链物流网认为具体原因有三点：
1. 保温隔热效果优异：挤塑板的闭孔率高达90%以上，内部结构致密，导热系数远低于聚苯板等材料，能有效阻止冷库冷量向下散失，避免土壤冻胀破坏地面结构。
冷库保温层下面为什么要用挤塑板
2. 抗压能力强：冷库地面需承受货架、叉车、货物的重压，挤塑板的抗压强度可达200~500kPa，不易变形塌陷，能长期保持结构稳定性。
冷库保温层下面为什么要用挤塑板
3. 防潮抗水性能好：闭孔结构让挤塑板吸水率极低，即便地面有少量积水或土壤返潮，也不会吸水导致保温性能下降，还能防止板材因受潮发霉、腐烂。
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