Epoxy-free synthesis of aromatic dicyclocarbonates and the related strong epoxy hybrid non-isocyanate polyurethanes

被引：6

作者：

Wang, Yuanmeng ^{[1
,2
]}

Liu, Xiangnan ^{[1
,2
]}

Wang, Yikun ^{[1
,2
]}

Zhao, Jingbo ^{[1
,2
]}

机构：

[1] Beijing Univ Chem Technol, Coll Mat Sci & Engn, Beijing 100029, Peoples R China

[2] Beijing Univ Chem Technol, Minist Educ, Key Lab Carbon Fiber & Funct Polymers, Beijing 100029, Peoples R China

来源：

MATERIALS TODAY COMMUNICATIONS | 2023年 / 34卷

基金：

北京市自然科学基金;

关键词：

Sustainable; Hybrid non-isocyanate polyurethanes; Aromatic tetraols; Aromatic cyclic carbonates; Hydroquinone; Bisphenol S; 5-MEMBERED CYCLIC CARBONATE; POLYADDITION; DIAMINES; DIOXIDE; ROUTE; POLYHYDROXYURETHANES; AMINOLYSIS; REACTIVITY; CHEMISTRY; POLYMERS;

D O I：

10.1016/j.mtcomm.2022.105263

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new epoxy-free method for synthesizing aromatic five-membered cyclic carbonates (5CCs) was established, and several epoxy hybrid non-isocyanate polyurethanes (HNIPUs) with aromatic segments were prepared from them. First, two aromatic tetraols were synthesized from hydroquinone and bisphenol S with 3-chloro-1,2-propanediol in aqueous NaOH solution. Then, the aromatic 5CCs were prepared through a carbonylation reaction of the tetraols with diethyl carbonate in the presence of K2CO3. Six H2N- terminated polyhydroxyurethane prepolymers (PHUs) were prepared through bulk aminolysis polyaddition of the 5CCs with excessive hexamethylene diamine, and they were crosslinked with an aliphatic epoxy resin to obtain crosslinked HNIPUs. The HNIPUs were amorphous crosslinked hybrid PUs with high crosslinking extent. They showed excellent mechanical property with tensile strength up to 45.1 MPa and good toughness. Introducing aromatic segments increased the stiffness, glass transition temperature, intermolecular interactions, and mechanical properties, and also influenced the swelling properties of HNIPUs.

引用

页码：1 / 12

页数：12

共 63 条

[31] Syntheses and thermal properties of poly(hydroxy)urethanes by polyaddition reaction of bis(cyclic carbonate) and diamines [J].