不同协效剂对APP膨胀阻燃ABS/PET合金的影响  

The Flammability of Abs/PET/APP Mixtures with Different Synergic Agents

作　　者：赵国栋[1] 潘治梁[1] 蔡绪福[1] 

机构地区：[1]四川大学高分子科学与工程学院,四川成都610065

出　　处：《四川大学学报（工程科学版）》2011年第3期188-193,共6页Journal of Sichuan University (Engineering Science Edition)

基　　金：国家自然科学基金资助项目(50973066)

摘　　要：研究了8种协效剂(双噁唑啉、热塑性酚醛树脂、二氧化锰、蒙脱土、硼酸锌、4A分子筛、氧化锌和凹凸棒)对APP膨胀阻燃ABS/PET合金的影响,并探讨了ABS/PET/APP体系的降解成炭行为。研究表明,APP主要促进了PET分解成炭从而与其成为一种新型膨胀阻燃体系。通过氧指数(LO I)和UL-94标准测试燃烧性能,除凹凸棒外,其它7种协效剂均提高了ABS/PET/APP体系的氧指数,并使其通过V-0级测试;热失重分析(TGA)表明,ABS/PET/APP协/效剂体系具有更高的成炭率;通过扫描电子显微镜(SEM)对炭层表面进行观察,除凹凸棒体系外,其它7种协效剂体系的炭层表面均具有更好的致密性。Abs/PET/APP mixtures with different synergic agents（SA） were prepared for investigating the effect of SA（2,2＇-bis（2-oxazoline）（BOZ）,thermoplastic phenolic resins（TPPF）,manganese dioxide,montmorillonite（MMT）,zinc borate,4A Zeolite,zinc oxide（ZnO）,and attapulgite） on the flame retardancy of mixtures,and the thermal degradation and charring of Abs/PET/APP was analyzed.It was concluded that a novel intumescent flame retardant containing APP（acid source and a blowing agent） and PET（carbon source） was obtained because APP mainly catalyzed PET to degrade into charring in Abs/PET/APP mixture on heating.The flammability of Abs/PET/APP mixtures with different SA was measured by the limited oxygen index（LOI） and UL-94 tests.Except for Abs/PET/APP/attapulgite mixture,Abs/PET/APP mixtures with other SA all passed the V-0 rating in UL-94 tests,the LOI of which was improved compare with Abs/PET/APP mixture.Thermo-oxidative degradation behaviors of mixtures were analyzed by thermal gravimetric analyzer（TGA）,which showed an increasing char yield of Abs/PET/APP mixtures due to the addition of SA.And scanning electron microcopy（SEM） showed the denser carbon layer formation on the surface of Abs/PET/APP mixtures with SA（except for attapulgite） after burning.

关 键 词：ABS/PET APP 协效剂 膨胀阻燃 

分 类 号：TQ324[化学工程—合成树脂塑料工业]