Flame Retardance and Origin of Bismaleimide Resin Composites with Green and Efficient Aluminum Phosphates

作者：You, Qiuqin; Yuan, Li; Wang, Hong; Liang, Guozheng; Gu, Aijuan^*

来源：Journal of Applied Polymer Science, 2014, 131(22): 41089.

DOI：10.1002/APP.41089

• composites
• flame retardance
• thermosets

Developing green and high efficiency inorganic flame retardants is the trend of preparing flame retarding polymer composites. Aluminum phosphates (t-hAP) with uniform, small dimension, and hexagonal structure were facilely synthesized, which have similar size (1-2 mu m) but different structures from commercial spherical-like aluminum phosphate (cAP). The flame retardance of bismaleimide (BD)/t-hAP and BD/cAP composites were intensively investigated. t-hAP is proved to have much better flame retarding effect than cAP, but also exhibits advantages over Mg(OH)(2) and Al(OH)(3). With only 5 wt % addition of t-hAP into BD resin, the peak and total heat releases as well as total smoke production significantly reduce 42.3, 47.8, and 67.3%, respectively; besides, better data are obtained as the loading of t-hAP increases to 10 wt %. These attractive data result from three effects induced by t-hAP. Besides the better protection role of sheet structure, the strong hydrogen bonding between t-hAP and BD resin endows the composite with good dispersion of t-hAP and high crosslinking density; moreover, t-hAP releases H2O and NH3, diluting flammable gases during combustion.

• 出版日期2014-11-15
• 单位苏州大学