CAJ | 학술논문

采用羟基磷灰石(HAP)改善聚丙烯(PP)/膨胀阻燃剂[IFR，聚磷酸铵(APP)/季戊四醇(PER)的质量比为3∶1]复合材料的阻燃性能。采用垂直燃烧、极限氧指数、热失重分析等手段研究了其阻燃性能和热性能。采用扫描电子显微镜(SEM)和X射线光电子能谱(XPS)仪对炭层的形貌和结构进行了研究。结果表明，HAP对IFR有一定的协同作用。当添加质量分数为0.5%的HAP和19.5%的IFR时，阻燃PP复合材料的极限氧指数达到29.9%，并且垂直燃烧达到了UL94 V-0级别。然而随着HAP含量再继续增加，复合材料的阻燃性能又开始下降。SEM分析表明，少量HAP的加入提高了炭层对气体和热量的阻隔效率；XPS分析表明，HAP并未改变炭层的化学结构。此外，热失重分析表明，HAP增加了复合材料在800℃时的质量残留量。
채용간기린회석(HAP)개선취병희(PP)/팽창조연제[IFR，취린산안(APP)/계무사순(PER)적질량비위3∶1]복합재료적조연성능。채용수직연소、겁한양지수、열실중분석등수단연구료기조연성능화열성능。채용소묘전자현미경(SEM)화X사선광전자능보(XPS)의대탄층적형모화결구진행료연구。결과표명，HAP대IFR유일정적협동작용。당첨가질량분수위0.5%적HAP화19.5%적IFR시，조연PP복합재료적겁한양지수체도29.9%，병차수직연소체도료UL94 V-0급별。연이수착HAP함량재계속증가，복합재료적조연성능우개시하강。SEM분석표명，소량HAP적가입제고료탄층대기체화열량적조격효솔；XPS분석표명，HAP병미개변탄층적화학결구。차외，열실중분석표명，HAP증가료복합재료재800℃시적질량잔류량。
Hydroxyapatite(HAP) was introduced into polypropylene(PP)/intumescent flame retardant(IFR) composites to strengthen their flame retardant properties. The vertical burning test,limiting oxygen index (LOI) and thermogravimetic(TG) analysis were used to investigate their flame retardancy and thermal stability. Scanning electron microscope (SEM) and X ray photoelectron Spectroscopy(XPS) were used to study the morphology and chemical structure of char layer. The results show that good synergistic effect existed between HAP and IFR at a suitable condition. LOI value can be increased to 29.9%and UL94 V-0 level can be obtained for the composites with the mass fraction of 0.5%HAP and 19.5%IFR. As the content of HAP increases,the flame retardancy of the composites decreases. SEM analysis results show low content of HAP helps char layer to hinder the heat and gas. XPS analysis results show HAP do not change the chemical structure of char layer. In addition,the HAP increases the char layer residues of the composites at 800℃in TG analysis test.