在弹性乙烯醋酸乙烯酯共聚物(EVA)发泡体系中,添加氢氧化镁(MH)、氢氧化铝(ATH)、红磷3种无卤阻燃剂,研究它们对体系阻燃性能的影响.结果表明,MH、ATH 和红磷单独添加均可以不同程度改善EVA发泡体系的阻燃性,但仍较差.MH、ATH 和红磷3种阻燃剂复配添加可以大大提高 EVA 发泡体系的阻燃性能.当MH 和ATH 添加量分别为32．1％和10．7％,红磷的添加量为5％时,阻燃性能最好,制备的无卤阻燃保温材料的导热系数为0．079 W/(m?K),极限氧指数值(LOI)为34．5％,垂直燃烧性能为V-0级,水平燃烧性能为 HB级,满足防火材料B1级的要求,同时解决了保温发泡材料的脆性问题.
The authors studied the influences of Halogen-free flame retardant to elastic ethylene-vinyl acetate (EVA)foaming material,especially its flame retardant properties.Three types of flame retardants were investi-gated:magnesium hydroxide (MH),aluminum hydroxide (ATH),and red phosphorus.The results showed that,individually,each of the flame retardant improved the flame retardant properties of EVA foaming materi-al,to various degrees.However,none of the flame retardant by itself provided adequate improvement.On the other hand,by compounding MH,ATH and red phosphorus together,the flame retardant properties were im-proved significantly.The best improvement was achieved with the following combination:MH 32.1%,ATH 10.7% and red phosphorus 5%.The corresponding properties of the resulting EVA foaming material were:coefficient of thermal conductivity:0.079 W/(m?K);the limit oxygen index (LOI):34.5%;the vertical burn-ing level:V-O;the horizontal burning level:HB.In summary,the resulting EVA foaming material meets the burning level requirements B1 for insulation materials,while at the same time resolved the brittleness issue of EVA foaming materials.
参考文献
| [1] | 胡验君;苏振国;杨金龙.建筑外墙外保温材料的研究与应用[J].材料导报,2012(z1):290-294. |
| [2] | Huang HH;Tian M;Liu L;Liang WL;Zhang LQ.Effect of particle size on flame retardancy of Mg(OH)(2)-filled ethylene vinyl acetate copolymer composites[J].Journal of Applied Polymer Science,20066(6):4461-4469. |
| [3] | Bibo Wang;Qilong Tai;Shibin Nie.Electron Beam Irradiation Cross Linking of Halogen-Free Flame-Retardant Ethylene Vinyl Acetate (EVA) Copolymer by Silica Gel Microencapsulated Ammonium Polyphosphate and Char-Forming Agent[J].Industrial & Engineering Chemistry Research,20119(9):5596-5605. |
| [4] | 李红姬;张万喜;孙国恩;陈广义;徐之光;崔岩.EVA/SiO2纳米复合材料的制备与性能研究[J].功能材料,2005(3):437-440. |
| [5] | Huang HH;Tian M;Liu L;He ZH;Chen ZQ;Zhang LQ.Effects of silicon additive as synergists of Mg(OH)(2) on the flammability of ethylene vinyl acetate copolymer[J].Journal of Applied Polymer Science,20066(6):3203-3209. |
| [6] | 汪关才;卢忠远;胡小平;张建华.无机阻燃剂的作用机理及研究现状[J].材料导报,2007(2):47-50. |
| [7] | 方立翠;赵均乐;张雅丽;黄兆阁.Mg（OH）2/Al（OH）3/包覆红磷阻燃SEBS/PS共混物[J].现代塑料加工应用,2011(2):25-28. |
| [8] | 伍玉娇;肖贤彬;骆丁胜;丁兴艳;王珏.Mg（OH）2与包覆红磷协效阻燃PP/PA6复合材料的研究[J].塑料,2009(1):58-61. |
| [9] | 李兴建;张宜恒;孙道兴.氢氧化镁/氢氧化铝/三聚氰胺磷酸盐协效无卤膨胀型阻燃硅橡胶的制备与性能研究[J].橡胶工业,2013(6):344-350. |
| [10] | 李志强;向兰;魏飞.阻燃级氢氧化镁的阻燃消烟机理及制备方法[J].海湖盐与化工,2004(2):1-3,7. |
| [11] | 赵丽芬;陈占勋;陈林书.阻燃聚烯烃类热塑性弹性体研究进展[J].弹性体,2003(5):56-61. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%