Minute Rebond Data

All raw data for the paper titled:Minute Rebond: A Simple Method for Making Lab-Scale Rebonded Foam and Its Application as a Novel Soilless Growing MediaPolyurethane foams (PUFs) utilised in the comfort industry generate substantial trim waste volumes requiring end-of-life management. Rebonding, one form of mechanical recycling, is a technique involving the mechanical breakdown and subsequent adhesion of PUF using polyurethane prepolymers yielding a recycled material. However, the limited investigation into the properties of rebond PUF constrains its potential for novel alternative uses, such as soilless plant-growing media. A laboratory-scale rebond pro-duction method has been developed, and a series of rebond PUFs produced to evaluate the influence of crumb size, density, prepolymer chemistry, and prepolymer loading on the properties of the rebond PUFs and their suitability as growing media. The results indicated that higher quality rebonds were obtained with larger crumb sizes (mixed or >7 mm), moderate amounts of prepolymer (4.5 to 7.5% by mass), and higher densities. Increasing density directly influenced plant growth-related properties, including re-ducing airflow, increasing water uptake through wicking, and increasing water reten-tion through drainage alongside larger crumb sizes [>7 mm]. To demonstrate the method’s utility for rapid screening, a plant growth trial was conducted using density as the key variable. Eruca sativa plants grown in low-density rebonds exhibited comparable growth (leaf length, leaf width, and shoot fresh weight) to mineral wool, whereas me-dium- and high-density rebonds showed reduced growth. This study validates a lab-scale technique that enables the rapid optimisation of rebond PUFs for novel appli-cations like soilless growing media.

本数据集包含题为《Minute Rebond：一种制备实验室级再生泡沫的简易方法及其作为新型无土栽培基质的应用》的研究论文的全部原始数据。
舒适用品行业中使用的聚氨酯泡沫（Polyurethane foams, PUFs）会产生大量裁切废料，亟需开展生命周期末端处理。再生粘合（Rebonding）作为机械回收的一种形式，是指通过机械破碎工艺拆解聚氨酯泡沫，并借助聚氨酯预聚物（polyurethane prepolymers）实现基材粘合，最终得到再生材料的技术。然而，目前针对再生粘合聚氨酯泡沫（rebond PUF）性能的研究较为有限，这制约了其在新型替代用途中的应用潜力，例如无土植物栽培基质。
本研究开发了一套实验室级的再生粘合制备工艺，并制备了一系列再生粘合聚氨酯泡沫，以评估碎屑尺寸、泡沫密度、预聚物化学组成以及预聚物添加量对再生粘合聚氨酯泡沫性能的影响，及其作为栽培基质的适用性。研究结果表明，采用更大粒径的碎屑（混合碎屑或粒径＞7mm）、适量的预聚物添加量（质量占比4.5%~7.5%）以及更高的泡沫密度时，可获得性能更优异的再生粘合泡沫。提升泡沫密度会直接影响与植物生长相关的各项性能：包括降低透气性、通过毛细作用提升吸水率，且配合粒径＞7mm的大碎屑可通过优化排水性能提升保水性。
为验证该工艺用于快速筛选配方的实用性，本研究以密度为核心变量开展了植物生长试验。在低密度再生粘合泡沫中种植的芝麻菜（Eruca sativa），其生长指标（叶长、叶宽以及地上部鲜重）与岩棉（mineral wool）栽培的植株相当；而中密度和高密度再生粘合泡沫栽培的植株生长则受到抑制。本研究验证了一套实验室级制备工艺，可快速优化再生粘合聚氨酯泡沫的配方，以适配无土栽培基质等新型应用场景。