Study of the synergistic effect of silicon and phosphorus on the blowing-out effect of epoxy resin composites
Study of the synergistic effect of silicon and phosphorus on the blowing-out effect of epoxy resin composites
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DOI：
10.1016/j.polymdegradstab.2012.03.008
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发表时间：
2012-06
影响因子：
5.9
通讯作者：
Wenchao Zhang;Xiangmei Li;Lamei Li;Rongjie Yang
中科院分区：
文献类型：
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作者：
Wenchao Zhang;Xiangmei Li;Lamei Li;Rongjie Yang
以八苯多面体低聚硅氧烷（OPS）和DOPO（9,10-二氢-9-氧-10-磷菲-10-氧化物）为负载，制备了一系列阻燃环氧树脂（EP）。采用LOI和UL-94程序测试了这些EP复合材料的阻燃性能。结果表明，OPS与DOPO的混合对阻燃EP复合材料的爆轰效果有显著影响。采用热重红外光谱（TGA-FTIR）对不同阻燃剂的EP复合材料在空气环境中的热解气体和热稳定性进行了测定。阻燃EP复合材料产生的气体种类与纯EP相同。通过锥量热法测定HRR、p-HRR、TSR和SEA，检测OPS和DOPO的协同效应。采用FTIR和XPS对EP复合材料经锥量热试验后产生的焦炭进行了研究。提出OPS与DOPO之间的相互作用是通过缩合相中的化学反应进行的。需要进一步调查，以充分揭示显著井喷效应背后的原因。
A series of flame retarded epoxy resins (EP) was prepared loaded with OPS (octaphenyl polyhedral oligomeric silsesquioxane) and DOPO (9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide). The flame retarding properties of these EP composites were tested using the LOI and UL-94 procedures. The results indicate that the mixture of OPS and DOPO has a remarkable influence on the blowing-out effect of these flame retarded EP composites. The pyrolytic gases produced and the thermal stability of the EP composites with different flame retardant were detected by TGA-FTIR in an air atmosphere. The gaseous species produced by the flame retarded EP composites are the same as those from pure EP. The synergistic effect of the OPS and DOPO was detected from the HRR, p-HRR, TSR, and SEA results after the cone calorimeter test. The char produced by the EP composites after the cone calorimeter test were investigated by FTIR and XPS. It is proposed that the interaction between OPS and DOPO takes place through a chemical reaction in the condensed phase. Further investigation is required to fully reveal the reason behind the remarkable blowing-out effect.