CAJ | 학술논문

采用原位聚合法合成制备了以蜜胺树脂（MF）、环氧树脂（EP）以及EP和MF为囊材的微胶囊阻燃剂MFAPP、EPAPP、EMFAPP,用红外光谱（FT-IR）和扫描电镜（SEM）表征微胶囊阻燃剂的核壳结构。采用极限氧指数（LOI）和垂直燃烧等级测试（UL94）对MFAPP、EPAPP、EMFAPP在环氧树脂中的阻燃特性进行了研究。当添加量大于7%时,阻燃复合材料均能通过UL 94 V-0级测试,极限氧指数大于27.0%,表明MFAPP、EPAPP、EMFAPP均为EP的高效阻燃剂,这些阻燃剂在EP阻燃过程中均形成了膨胀炭层,属于膨胀阻燃机理。另外在耐水性实验中发现,添加EPAPP、EMFAPP的EP复合材料具有更好的耐水性,经75℃水浸泡6天后,阻燃性能得到了较好的保持。
채용원위취합법합성제비료이밀알수지（MF）、배양수지（EP）이급EP화MF위낭재적미효낭조연제MFAPP、EPAPP、EMFAPP,용홍외광보（FT-IR）화소묘전경（SEM）표정미효낭조연제적핵각결구。채용겁한양지수（LOI）화수직연소등급측시（UL94）대MFAPP、EPAPP、EMFAPP재배양수지중적조연특성진행료연구。당첨가량대우7%시,조연복합재료균능통과UL 94 V-0급측시,겁한양지수대우27.0%,표명MFAPP、EPAPP、EMFAPP균위EP적고효조연제,저사조연제재EP조연과정중균형성료팽창탄층,속우팽창조연궤리。령외재내수성실험중발현,첨가EPAPP、EMFAPP적EP복합재료구유경호적내수성,경75℃수침포6천후,조연성능득도료교호적보지。
Three different microencapsulated flame retardants（MFAPP、EPAPP、EMFAPP） are prepared by in situ polymerization.Although with the same core of ammonium polyphosphate （APP）,MFAPP has the shell of melamine-formaldehyde resin（MF）,EPAPP has the shell of epoxy resin（EP）,and EMFAPP has a double shell of MF and EP.Structures of flame retardants are characterized by fourier transform infrared spectroscopy（FT-IR） and scanning electron microscope（SEM）.The flame retardancy of MFAPP,EPAPP and EMFAPP in EP is studied by Limiting Oxygen Index（LOI） and UL 94 tests.When the content of microencapsulated ammonium polyphosphate is more than 7%,all composites can pass V-0 in UL 94 test,and their LOI values are higher than 27.0%.It demonstrates that MFAPP,EPAPP and EMFAPP are great efficient flame retardants for EP.A lot of residual char is formed in the process of flame retardance,its mechanism is intumescent flame retardance.In the experiment of water resistance,composites containing EPAPP and EMFAPP show better water resistance than composites containing other flame retardants.They maintain the good flame retardancy after water treatment（75℃,6 d）.