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首页> 外文会议>Polyurethanes Technical Conference and Trade Fair >Rigid Polyurethane Foams Based on Polyol Produced from Mixed Polyurethane Foam Scrap Recovered from Shredder Residue
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Rigid Polyurethane Foams Based on Polyol Produced from Mixed Polyurethane Foam Scrap Recovered from Shredder Residue

机译：基于由碎碎屑残留物回收的混合聚氨酯泡沫废料产生的多元醇的刚性聚氨酯泡沫

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摘要

Polyurethane foams recovered from shredder residue via an automated separation process were glycolyzed, glysolysis product propoxylated into polyol, and polyol used in preparation of rigid polyurethane and urethane-modified isocyanurate foams. The resulting recycled polyol exhibited self catalytic properties, as no catalysts were needed for preparation of rigid polyurethane foams. Polyurethane foams based on the recycled polyol exhibited similar compressive strength, dimensional stability at -36° and 70°C, water absorption and dimensional stability with immersion in water, tumbling friability, and significantly better resistance to combustion in comparison to the reference polyurethane foams prepared from a conventional sucrose-based polyol for rigid foams. Urethane- modified isocyanurate foams based on the recycled polyol prepared at 300 isocyanate index exhibited 5 times lower burning rate in the flammability test than the foams prepared at the same isocyanate index from the conventional sucrose-based polyol.
机译：通过自动分离过程从碎碎渣残基回收的聚氨酯泡沫是甘油化的，甘油溶解产物普罗氧基化物中的多元醇，以及用于制备刚性聚氨酯和氨基甲酸酯改性的异氰脲酸酯泡沫的多元醇。所得再循环多元醇表现出自催化性质，因为不需要催化剂来制备刚性聚氨酯泡沫。基于再循环多元醇的聚氨酯泡沫表现出类似的抗压强度，尺寸稳定性在-36°和70℃，水吸收和尺寸稳定性，浸入水中，滚动的脆性，与制备的参考聚氨酯泡沫相比，燃烧显着更好地抵抗来自常规蔗糖基多元醇用于刚性泡沫。基于在300个异氰酸酯指数中制备的再循环多元醇的氨基甲酸酯 - 改性的异氰脲酸酯泡沫在可燃性试验中表现出比在与常规蔗糖基多元醇相同的异氰酸酯指数中制备的泡沫的燃烧率下降5倍。

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