Poly(hydroxyurethane) Adhesives and Coatings: State-of-the-Art and Future Directions

编号 020031203

推送时间 20211011

研究领域 林产化工 

年份 2021 

类型 期刊 

语种 英语

标题 Poly(hydroxyurethane) Adhesives and Coatings: State-of-the-Art and Future Directions

来源期刊 Materials

期 第312期

发表时间 20210714

关键词 Sustainability;  Non-isocyanate polyurethane;  Adhesive;  Coating;  Poly(hydroxyurethane);  Cyclic carbonate;  Polyaddition; 

摘要 Polyurethane (PU) adhesives and coatings are widely used to fabricate high-quality materials due to their excellent properties and their versatile nature, which stems from the wide range of commercially available polyisocyanate and polyol precursors. This polymer family has traditionally been used in a wide range of adhesive applications including the bonding of footwear soles, bonding of wood (flooring) to concrete (subflooring), in the automotive industry for adhering different car parts, and in rotor blades, in which large surfaces are required to be adhered. Moreover, PUs are also frequently applied as coatings/paints for automotive finishes and can be applied over a wide range of substrates such as wood, metal, plastic, and textiles. One of the major drawbacks of this polymer family lies in the use of toxic isocyanate-based starting materials. In the context of the REACH regulation, which places restrictions on the use of substances containing free isocyanates, it is now urgent to find greener routes to PUs. While non-isocyanate polyurethanes (NIPUs) based on the polyaddition of poly(cyclic carbonate)s to polyamines have emerged in the past decade as greener alternatives to conventional PUs, their industrial implementation is at an early stage of development. In this review article, recent advances in the application of NIPUs in the field of adhesives and coatings are summarized. The article also draws attention to the opportunities and challenges of implementing NIPUs at the industrial scale.

服务人员 尚玮姣

服务院士 宋湛谦

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