合成了一种含磷阻燃剂2-(二苯基膦酰基)-1,4-苯二酚(DPO-HQ),通过红外光谱、核磁对其化学结构进行了表征.同时,以DPO-HQ和二氨基二苯砜(DDS)为固化剂,双酚A环氧树脂(EP)为基料,制备了不同磷含量的阻燃环氧树脂.利用极限氧指数(LOI)和垂直燃烧实验表征了所得环氧树脂的阻燃性能,通过热重分析,扫描电镜和热红联用分析研究了阻燃环氧树脂的热性能.结果表明,随着磷含量的增加,阻燃环氧树脂的初始降解温度略有降低,但燃烧后残炭率明显增加.阻燃剂的加入抑制了环氧树脂热分解时产生的可燃性气体和自由基,从而形成高温度下比较稳定的炭层.当磷的质量分数为1.5％时,其LOI值可达到30.8％,垂直燃烧性能通过UL 94 V-0等级,表明DPO-HQ可以作为环氧树脂的良好阻燃剂.
参考文献
| [1] | Wang QF;Shi WF .Kinetics study of thermal decomposition of epoxy resins containing flame retardant components[J].Polymer Degradation and Stability,2006(8):1747-1754. |
| [2] | Sergei V. Levchik;Edward D. Weil .A Review of Recent Progress in Phosphorus-based Flame Retardants[J].Journal of fire sciences,2006(5):345-364. |
| [3] | Wang, DY;Wang, YZ;Wang, JS;Chen, DQ;Zhou, Q;Yang, B;Li, WY .Thermal oxidative degradation behaviours of flame-retardant copolyesters containing phosphorous linked pendent group/montmorillonite nanocomposites[J].Polymer Degradation and Stability,2005(1):171-176. |
| [4] | Lin, C.H.;Chang, S.L.;Wei, T.P. .High-T_g transparent poly(ether sulfone)s based on phosphinated bisphenols[J].Macromolecular chemistry and physics,2011(5):455-464. |
| [5] | Shieh JY.;Wang CS. .Effect of the organophosphate structure on the physical and flame-retardant properties of an epoxy resin[J].Journal of Polymer Science, Part A. Polymer Chemistry,2002(3):369-378. |
| [6] | Ho TH;Hwang HJ;Shieh JY;Chung MC .Thermal and physical properties of flame-retardant epoxy resins containing 2-(6-oxido-6H-dibenz < c,e >< 1,2 > oxaphosphorin-6-yl)-1,4-napthalenediol and cured with dicyanate ester[J].Polymer Degradation and Stability,2008(12):2077-2083. |
| [7] | 魏振杰,刘伟区,李宏静,马松琪,闫振龙.含磷有机硅杂化环氧树脂固化体系性能研究[J].高分子学报,2012(02):148-153. |
| [8] | C.H.Lin;C.S Wang .Novel phosphorus-containing epoxy resins Part I.Synthesis and properties[J].Polymer: The International Journal for the Science and Technology of Polymers,2001(5):1869-1878. |
| [9] | Wu, K;Song, L;Hu, Y;Lu, HD;Kandola, BK;Kandare, E .Synthesis and characterization of a functional polyhedral oligomeric silsesquioxane and its flame retardancy in epoxy resin[J].Progress in Organic Coatings: An International Review Journal,2009(4):490-497. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%