Research Progress of Functional Non-isocyanate Polyurethane
Polyurethanes are among the most commonly used polymeric materials in daily life and industry due to their excellent combined properties.Conventional polyurethanes are mainly prepared by the reaction of polyols and highly toxic diisocyanates or polyisocyanates.In the current context of sustainable development,functional non-isocyanate polyurethanes are highly valued because they are prepared without the use of toxic isocyanate raw materials,and at the same time,they can meet the growing demand and market variety.In this review,the preparation routes of non-isocyanate polyurethanes with application prospects were summarized,and reaction routes based on cyclic carbonate and dimethyl carbonate,as well as their advantages and disadvantages,were discussed in detail.The application progress of functional non-isocyanate polyurethanes in fields of self-healing materials,shape memory materials,reprocessable materials and adhesion was also discussed in detail,and the future development direction and trend were prospected.
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