阻燃剂对微孔聚氨酯弹性体性能的影响
Effect of Flame Retardants on Properties of Microporous Polyurethane Elastomers
吴晓霞 1张旭东 2甄茂民 3李晓东 3赵志颖 3江皓 3邹美帅3
作者信息
- 1. 北京理工大学材料学院,北京 100081;枣庄学院化学化工与材料科学学院,山东枣庄 277160
- 2. 山东奥卓新材料有限公司,山东滕州 277524;北京理工大学鲁南研究院,山东滕州 277599
- 3. 北京理工大学材料学院,北京 100081
- 折叠
摘要
以可膨胀石墨(EG)、可膨胀石墨/三聚氰胺聚磷酸盐(EG/MPP)和可膨胀石墨/三聚氰胺聚磷酸盐/甲基膦酸二甲酯(EG/MPP/DMMP)为阻燃剂制备了具有阻燃功能的微孔聚氨酯弹性体(MPUE),通过热重分析、极限氧指数(LOI)测定仪及水平垂直燃烧测试,研究了阻燃剂对微孔聚氨酯弹性体热降解行为和阻燃性能的影响,重点分析了阻燃剂对力学性能、动态减振、耐蠕变性能的影响.结果表明,单独添加EG,在质量分数20％以上才对MPUE具有较明显的阻燃效果,但随着EG含量增加,MPUE的动态减振效果和耐蠕变性能变差.EG与MPP复配,对MPUE的阻燃性能有显著改善,但MPUE的动态减振和耐蠕变性能等指标仍偏高.EG/MPP/DMMP复配,阻燃性能进一步提升,并且改善了动态减振性能和耐蠕变性能,质量分数为11％,m(EG)/m(MPP)/m(DMMP)=1∶2∶1时,MPUE的LOI仍有27.8％,动静刚度比降到了 1.35以内.
Abstract
Microporous polyurethane elastomers(MPUEs)with flame retardant function were prepared by using expandable graphite(EG),expandable graphite/melamine polyphosphate(EG/MPP)and expandable graphite/melamine polyphosphate/dimethyl methylphosphonate(EG/MPP/DMMP)as flame retardants.The effect of flame retardants on thermal degradation behavior and flame retardancy of MPUEs were studied by thermogravimetric analysis,limiting oxygen index(LOI),horizontal and vertical combustion test.The effects of flame retardants on mechanical properties,dynamic vibration reduction and creep resistance were analyzed.The results show that the addition of EG alone has obvious flame retardant effect on MPUE when the addition amount is more than 20％,but the dynamic damping effect and creep resistance of MPUE become worse with the increase of EG content.When EG was combined with MPP,the flame retardancy of MPUE is significantly improved,but the dynamic vibration reduction and creep resistance of MPUE are still high.When EG/MPP/DMMP was combined,the flame retardant performance is further improved,and the dynamic vibration damping performance and creep resistance are improved.When the addition amount is 11％,the LOI of MPUE is still 27.8％,and the dynamic and static stiffness ratio is reduced to less than 1.35.
关键词
微孔聚氨酯弹性体/可膨胀石墨/阻燃/动态减振/耐蠕变Key words
microporous polyurethane elastomer/expandable graphite/flame retardant/dynamic vibration reduction/creep resistance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据