The research progress,existing problems and future development of flame retarding modification of bio-based polyurethane are summarized.The work summarized the research status of commonly used methods for preparing bio-based polyurethane,including basic characteristics,application effect and devel-opment prospect of various flame retardant agent.At present,vegetable oil-based polyols can effectively re-place traditional industrial synthetic petroleum-based polyols as raw materials for the synthesis of bio-based polyurethane.However,there are still some shortcomings in this area that have not been addressed.The defects of polyurethane,such as flammability and smokiness,need to be improved.The practical ap-plication conversion rate of research results was not high.The environmental protection and safety perform-ance of bio-based polyurethane can be further improved and enriched.Therefore,more efforts should be put into the above questions,which were all of great significance to the development of polyurethane.The research on retarding modification of polyurethane will have great development space and application val-ue in the future.
维普
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