Preparation of Bio-polyols by Liquefaction of Hardwood Residue and Their Application in the Modification of Polyurethane Foams  

作　　者：鹿现哲 WANG Yingchun ZHANG Yizhuan CHENG Xiansu 于岩 靳艳巧 

机构地区：[1]College of Materials Science and Engineering,Fuzhou University [2]Key Laboratory of Ecomaterials Advanced Technology(Fuzhou University)

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2016年第4期918-924,共7页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China(Nos.51503041 and 51472050)

摘　　要：Hardwood residue（HR）,a byproduct of paper industry,was liquefied by using polyethylene glycol 400（PEG400） and ethylene carbonate（EC） as the liquefaction solvents,and concentrated sulfuric acid as the catalyst to produce bio-polyols（HRLP）,which were used to synthesize polyurethane（PU） foams.The effects of conditions on the properties of HRLP and modified PU foams were investigated and the mechanism of biomass liquefaction was discussed.The optimum conditions of liquefaction were obtained as follows： reaction temperature of 160 °C,reaction time of 60 min,ratio of PEG400/EC of 8：2（w/w）,and ratio of liquid/solid of 5：1（w/w）.The characterization of HRLP modified PU foams suggested that HRLP could partially replace the petroleum polyols to synthesize PU foams.With the increase of the replacement percentage of HRLP,the apparent density and compressive strength of the foams increased firstly,and then decreased.Meanwhile,the thermal stability was improved slightly.Hardwood residue（HR）,a byproduct of paper industry,was liquefied by using polyethylene glycol 400（PEG400） and ethylene carbonate（EC） as the liquefaction solvents,and concentrated sulfuric acid as the catalyst to produce bio-polyols（HRLP）,which were used to synthesize polyurethane（PU） foams.The effects of conditions on the properties of HRLP and modified PU foams were investigated and the mechanism of biomass liquefaction was discussed.The optimum conditions of liquefaction were obtained as follows： reaction temperature of 160 °C,reaction time of 60 min,ratio of PEG400/EC of 8：2（w/w）,and ratio of liquid/solid of 5：1（w/w）.The characterization of HRLP modified PU foams suggested that HRLP could partially replace the petroleum polyols to synthesize PU foams.With the increase of the replacement percentage of HRLP,the apparent density and compressive strength of the foams increased firstly,and then decreased.Meanwhile,the thermal stability was improved slightly.

关 键 词：Residue polyurethane glycol synthesize polyethylene lignin hydroxyl Modification compressive slightly 

分 类 号：TQ328.0[化学工程—合成树脂塑料工业]