文献类型：期刊文献

中文题名：生物基聚氨酯胶黏剂的合成与性能研究

英文题名：Research on the Synthesis and Properties of Bio-based Polyurethane Adhesive

作者：汪宏生[1,2] 叶韧[1,2] 张代晖[1,2] 桂成胜[3] 王春鹏[1,2]

第一作者：汪宏生

机构：[1]中国林业科学研究院林产化学工业研究所,江苏省生物质能源与材料重点实验室,国家林业和草原局林产化学工程重点实验室,林木生物质低碳高效利用国家工程研究中心,江苏南京210042;[2]南京林业大学江苏省林业资源高效加工利用协同创新中心,江苏南京210037;[3]浙江升华云峰新材股份有限公司,浙江湖州313220

年份：2025

卷号：45

期号：3

起止页码：45-51

中文期刊名：林产化学与工业

外文期刊名：Chemistry and Industry of Forest Products

收录：;北大核心:【北大核心2023】；

基金：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)。

语种：中文

中文关键词：生物基聚酯多元醇;聚氨酯;微相分离;E_(NF)级标准

外文关键词：bio-based polyester polyol;polyurethane;microphase separation;E_(NF)grade standard

分类号：TQ35;TQ433

摘要：以生物基2,5-呋喃二甲酸二甲酯(DMFD),油脂基氢化二聚酸(Pripol 1009)和生物基1,4-丁二醇(bio-BDO)为原料,采用酯交换/酯化-熔融缩聚法制备了相对分子质量约为1000的聚(2,5-呋喃二甲酸丁二醇酯-co-氢化二聚酸丁二醇酯)二醇(PBDF-20 diol),随后以PBDF-20 diol聚酯多元醇为软段、以二苯基甲烷-4,4′二异氰酸酯(4,4′-MDI)和bio-BDO为硬段,采用溶液加聚法制备得到生物基聚氨酯,并采用多种方法对生物基聚氨酯以及粘接试件进行表征。研究结果表明:PBDF-20 diol酸值和羟值满足指标要求,相应的生物基聚氨酯为具有微相分离结构的弱结晶性聚合物,其分散相长周期为13.4 nm;其玻璃化转变温度和熔融温度分别为35.5和154.1℃,拉伸强度及断裂伸长率分别为44.5 MPa和352%。利用该聚氨酯胶膜压制的竹材和桦木胶合板,剪切强度远高于传统三醛胶,尤其在不锈钢上表现出极佳的粘接性能,搭接剪切强度为(28.27±0.63)MPa,在桦木胶合板上的甲醛释放量<0.025 mg/m^(3),符合GB/T 39600—2021 E_(NF)级标准。
Polyester polyol poly(butylene 2,5-furandicarboxylate-co-butylene hydrogenated dimer acid)diol(PBDF-20 diol)with a molecular weight of about 1000 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/m^(3),complying with E_(F)grade standard.