巨菌草沼渣制备液化多元醇及合成聚氨酯的研究

Abstract

Abstract: The biogas residues of Pennisetum giganteum were liquefied into bio-polyol in the mixed solvent of poly-ethyleneglycol (PEG400) and glycerin. The influences of liquefaction conditions on the process of liquefaction were studied. The results indicated that the optimal conditions were mass ratio of PEG400 and glycerin 1.5:1, mass ratio of liquid and solid 2.9:1, mass fraction of sulfuric acid compared to the mixed solvent 5%, liquefaction temperature 160℃ and liquefaction time 1.5h.Under these conditions, the hydroxyl value of the liquefaction product was 498mg/g. The best performance of polyurethane foam was obtained by bio-polyol instead of polyether polyol with the mass ratio of 1:1, and the density and compressive strength were 38.7kg/m³ and 0.21MPa.

Key words: Pennisetum giganteum, biogas residue, liquefied-polyol, rigid polyurethane foam

CLC Number:

TQ35

YU Zhi-hao, XIAO Zheng, JIA Rui-bo, ZHAO Chao, LIU Bin. Synthesis of Liquefied Polyol from Biogas Residues of Pennisetum giganteum and Its Application in Preparation of Polyurethane[J]. bce, 2016, 50(1): 11-16.

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Synthesis of Liquefied Polyol from Biogas Residues of Pennisetum giganteum and Its Application in Preparation of Polyurethane

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