长碳链聚酰胺材料的结构性能关系及应用开发OA

Long-chain polyamide is a special type of polyamide engineering plastic.Compared with the common polyamide 6 and polyamide 66,it has the characteristics of lower melting point,wider processing window,lower moisture absorption rate,good chemical resistance,good dimen-sional stability,and excellent comprehensive mechanical properties.It is widely used in automo-tive water and oil pipes and backsheet membrane for solar cells,and so on.Since the domestic in-dustrialization of long-chain polyamide was achieved in China several years ago,significant pro-gress has been made in the structural and performance evolution during processing,crystal form transformation and regulation,and the development of downstream application performance of this material.This paper focuses on the study of the relationship between the structure and prop-erties of long-chain polyamides,as well as their applications in fields such as fibers,films,and pipes.Meanwhile,the development of long-chain polyamide materials in the future was intro-duced,emphasizing the need for in-depth and systematic research on their fundamental physical and chemical properties.On this foundation,efforts should be made to advance the development of high-performance and functional materials.Notably,long-chain polyamide elastomers demonstrate promising application potential in lightweighting,particularly in novel functional materials such as microporous materials and gas-selective films.