生物基聚氨酯乳液的研究进展

Research progress of bio-based polyurethane emulsions

摘要:

聚氨酯乳液由于性能优异，广泛应用于建筑、皮革、金属防腐等领域的涂装与防护。现有聚氨酯乳液大多为石油基产品，出于可持续发展的需要，伴随生物基原料的快速发展和大规模商业化，生物基聚氨酯乳液获得快速发展。本文综述了合成聚氨酯乳液的生物基原料和助剂，包括生物基异氰酸酯、多元醇、扩链剂以及其他改性原料，同时分析了木质素基、植物油基、非天然单体基以及其他生物基聚氨酯乳液的新进展，指出了生物基聚氨酯乳液面临主要问题，包括原材料供应不足、成本高和产物性能不足等挑战，展望了生物基聚氨酯乳液在无溶剂、高生物基含量和多功能等产品的发展前景。

Abstract:

Due to its excellent performance, polyurethane emulsion is widely used in painting, protection and protection in construction, leather, metal anti-corrosion and other fields. Most of the existing polyurethane emulsions are petroleum-based products, and out of the need for sustainable development, with the rapid development of bio-based raw materials and large-scale commercialization, bio-based polyurethane emulsions have achieved rapid development. In this paper, the bio-based raw materials and additives for the synthesis of polyurethane emulsions, including bio-based isocyanates, polyols, chain extenders and other modified raw materials, analyze the new progress of lignin-based, vegetable oil-based, unnatural monomer-based and other bio-based polyurethane emulsions, point out the main problems faced by bio-based polyurethane emulsions, including insufficient raw material supply, high cost and insufficient product performance, and look forward to the development prospects of bio-based polyurethane emulsions in solvent-free, high bio-based content and multi-functional products.