Xiaohua Gu1,*, Shiwei Lyu1, Siwen Liu2
Journal of Renewable Materials, Vol.9, No.11, pp. 1913-1926, 2021, DOI:10.32604/jrm.2021.015400
Abstract A bi-component alcoholysis agent containing propylene glycol (PG) and ethanolamine (ETA) was used to catalyst
the degradation of the waste polyurethane rigid foam. The oligomer polyols obtained through degradation were
used as raw materials to produce recycled polyurethane rigid foam composites with lignin as reinforcing filler.
The effect of alcoholysis mass ratio on degradation was investigated by analyzing the viscosity, hydroxyl content
and chemical structure of the degradation products. The effect of lignin addition on the properties of regenerated
polyurethane rigid foam were investigated by analyzing water absorption rate, compressive strength, porosity,
thermal stability, thermal conductivity coefficient, morphology and thermal… More >
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