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。
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.
参考文献
| [1] | Tang Z.;Maroto-Valer MM.;Andresen JM.;Miller JW.;Listemann ML. McDaniel PL.;Morita DK.;Furlan WR. .Thermal degradation behavior of rigid polyurethane foams prepared with different fire retardant concentrations and blowing agents[J].Polymer: The International Journal for the Science and Technology of Polymers,2002(24):6471-6479. |
| [2] | 叶美玲,洪金庆,陈翠雪,朱爱梅,刘庆林.低密度阻燃聚氨酯硬质泡沫的制备及性能初探[J].高分子材料科学与工程,2012(09):141-144. |
| [3] | Zatorski W;Brzozowski ZK;Kolbrecki A .New developments in chemical modification of fire-safe rigid polyurethane foams[J].Polymer Degradation and Stability,2008(11):2071-2076. |
| [4] | 毋登辉,赵培华,王晓峰,刘亚青,李天凯,廖登雄.无卤型阻燃全水发泡硬质聚氨酯泡沫塑料的制备及性能研究[J].功能材料,2013(10):1404-1408. |
| [5] | 董金路,曹宏斌,张懿.可膨胀石墨阻燃水发泡聚氨酯泡沫塑料的制备[J].高分子材料科学与工程,2009(06):128-131. |
| [6] | Ye, L;Meng, XY;Ji, X;Li, ZM;Tang, JH .Synthesis and characterization of expandable graphite-poly(methyl methacrylate) composite particles and their application to flame retardation of rigid polyurethane foams[J].Polymer Degradation and Stability,2009(6):971-979. |
| [7] | Singh H;Jain AK .Ignition, Combustion, Toxicity, and Fire Retardancy of Polyurethane Foams: A Comprehensive Review[J].Journal of Applied Polymer Science,2009(2):1115-1143. |
| [8] | Shi L;Li ZM;Xie BH;Wang JH;Tian CR;Yang MB .Flame retardancy of different-sized expandable graphite particles for high-density rigid polyurethane foams[J].Polymer international,2006(8):862-871. |
| [9] | Meng, XY;Ye, L;Zhang, XG;Tang, PM;Tang, JH;Ji, X;Li, ZM .Effects of Expandable Graphite and Ammonium Polyphosphate on the Flame-Retardant and Mechanical Properties of Rigid Polyurethane Foams[J].Journal of Applied Polymer Science,2009(2):853-863. |
| [10] | Thirumal, M;Singha, NK;Khastgir, D;Manjunath, BS;Naik, YP .Halogen-Free Flame-Retardant Rigid Polyurethane Foams: Effect of Alumina Trihydrate and Triphenylphosphate on the Properties of Polyurethane Foams[J].Journal of Applied Polymer Science,2010(4):2260-2268. |
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