林产化学与工业2025，Vol.45Issue(3)：45-51,7.DOI:10.20195/j.issn.0253-2417.2024030
生物基聚氨酯胶黏剂的合成与性能研究
Research on the Synthesis and Properties of Bio-based Polyurethane Adhesive
摘要
Abstract
Polyester polyol poly(butylene 2,5-furandicarboxylate-co-butylene hydrogenated dimer acid)diol(PBDF-20 diol)with a molecular weight of about 1 000 g/mol was prepared using bio-based 2,5-dimethyl furandicarboxylate(DMFD),bio-oil-based hydrogenated dimer acid(Pripol 1009)and bio-based 1,4-butanediol(bio-BDO)as feedstocks via transesterification/esterification-melt polycondensation method.Then,polyurethane was synthesized by solution addition polymerization using PBDF-20 diol polyester polyol as the soft segment and diphenylmethane-4,4' diisocyanate(4,4'-MDI)and bio-BDO as the hard segments.Various methods were used to characterize the properties of polyester polyol,polyurethane,and bonded specimens.These results indicated that the acid value and hydroxyl value of PBDF-20 diol meet the index requirements and the corresponding polyurethane is a semi-crystalline polymer with a nanoscale microphase separation structure and a long period size of 13.4 nm.Also,the corresponding polyurethane's glass transition temperature and melting point were 35.5 ℃ and 154.1 ℃,and its tensile strength and elongation at break were 44.5 MPa and 352％,respectively.The shear strength of bamboo and birch plywood pressed with this thermoplastic polyurethane adhesive film was much higher than that of traditional glue with aldehyde.Especially,it showed excellent bonding performance with lap shear strength of(28.27±0.63)MPa on stainless steel,and the formaldehyde emission was less than 0.025 mg/m3,complying with ENF grade standard.关键词
生物基聚酯多元醇/聚氨酯/微相分离/ENF级标准Key words
bio-based polyester polyol/polyurethane/microphase separation/ENF grade standard分类
化学化工引用本文复制引用
汪宏生,叶韧,张代晖,桂成胜,王春鹏..生物基聚氨酯胶黏剂的合成与性能研究[J].林产化学与工业,2025,45(3):45-51,7.基金项目
江苏省生物质能源与材料重点实验室基金资助项目(JSBEM-S-202102) （JSBEM-S-202102）
