聚酰胺(PA)俗称尼龙,是20世纪30年代美国DuPont公司开发的产品，PA产品广泛应用于纺织汽车、电子电气交通运输等众多领域，我国PA产业起步于20世纪50年代,发展较为滞后,90年代才步入正轨,近10年发展迅速，但也伴随着生产能力过剩、高性能产品比重较低、产业链较矩、对环境不友好等问题，PA产品及牌号众多，改性，产品不断推陈出新，数量惊人，PA产业的上游基本原料日益多样化，传统的全苯工艺路线已被半苯路线取代，又开发出丁二烯工艺路线,为了降低.对环境的影响,目前在积极研究非石油基生物法工艺路线。PA产业的下游应用领域更是遍布纺织、汽车、电子电气、机械、化工、包装、交通运输、日用品及军I等众多行业，经过几十年的发展，PA生产技术和产品质量已达到较高的水平,PA产业体系比较完善,PA产品及其性能已被人

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