CAJ | 학술논문

采用可膨胀石墨(EG)与聚磷酸铵(APP)、氢氧化铝(ATH)组成无卤复配体系阻燃全水发泡聚氨酯硬质泡沫(RPUF),并研究了其结构与性能。结果表明,27%(质量分数)的 EG能使 RPUF 的 LOI 达到37%,但会破坏 RPUF 的结构完整性,使其压缩强度比纯RPUF降低27.5%；EG/APP/ATH 复配体系具有良好阻燃协同效应,能很好地平衡阻燃 RPUF 的阻燃和力学性能,当其组份比为6/2/2、含量为27%(质量分数)时,阻燃 RPUF 的 LOI 达到39%,该复配阻燃剂对RPUF的结构影响小,阻燃 RPUF的压缩强度为326 kPa,仅略低于纯RPUF。
채용가팽창석묵(EG)여취린산안(APP)、경양화려(ATH)조성무서복배체계조연전수발포취안지경질포말(RPUF),병연구료기결구여성능。결과표명,27%(질량분수)적 EG능사 RPUF 적 LOI 체도37%,단회파배 RPUF 적결구완정성,사기압축강도비순RPUF강저27.5%；EG/APP/ATH 복배체계구유량호조연협동효응,능흔호지평형조연 RPUF 적조연화역학성능,당기조빈비위6/2/2、함량위27%(질량분수)시,조연 RPUF 적 LOI 체도39%,해복배조연제대RPUF적결구영향소,조연 RPUF적압축강도위326 kPa,부략저우순RPUF。
In this paper,halogen-free flame retardants,consist of expandable graphite (EG),ammonium polyphosphate (APP)and alumina trihydrate (ATH),were applied to water-blown polyurethane rigid foam, and the structure and properties of the flame retardant foam were studied.The results indicated that,the limit-ed oxygen index (LOI)of 27wt% EG filled RPUF was 37%.However,the structural integrity of the RPUF was decreased,which led to 27.5% decrease of the compression strength of the RPUF/EG.EG/APP/ATH has good synergistic effect on flame retardancy of RPUF,which well balanced the flame retardant and mechanical properties of RPUF.With a content of 27wt% and a EG/APP/ATH composition of 6/2/2,the LOI of flame-retardant RPUF reached 3 9%.The compounding flame retardants had slight influence on the structure of the RPUF,and the compression strength of EG/APP/ATH filled RPUF reached 326 kPa,only slightly lower than pure RPUF.