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摘要
以4,4′-二环己基甲烷二异氰酸酯(HMDI)、多元醇聚四氢呋喃二醇(PTMG1000)、聚环氧丙烷多元醇(EP3600)和三异丙醇胺(TIPA)为主要原料,选用微晶纤维素(MCC),抗氧化剂(A080)和中空玻璃微珠(HGM)作为填料,制备了一系列聚氨酯弹性体(PUE)复合材料,研究了填料对PUE性能的影响。结果表明:填料的加入未影响PUE分子的振动;3种复合材料拉伸强度随添加量增加先提高后下降,而断裂伸长率变化趋势不一,随着添加量的提高,A080/PUE材料断裂伸长率一直增加,HGM/PUE材料断裂伸长率一直下降,而MCC/PUE材料断裂伸长率先增加后降低;MCC/PUE材料阻尼性能有一定程度提高,A080/PUE材料玻璃化转变温度向高温偏移,阻尼温域拓宽,而HGM/PUE材料阻尼因子下降;填料的加入提高了PUE复合材料的耐温性。
Abstract
Dicyclohexyl methane 4,4′-diisocyanate (HMDI),polyols (PTMG1000,EP3600) and triisopropanol amine (TIPA) used as the main raw materials,microcrystalline cellulose (MCC),antioxidant (A080) and hollow glass microspheres (HGM) as the filler,a series of polyurethane elastomer composites were prepared.The effect of filler on the properties of composites was studied.The results showed that the fillers with different content added did not affect the molecular vibration of polyurethane.The tensile strength of three kinds of composite increased first and then decreased when increasing filler adding,but the elongation at break were not a trend.With increasing filler adding,the elongation at break of A080/PUE increased,but the elongation at break of HGM/PUE decreased,while MCC/PUE increased first and then reduced.MCC/PUE improved the damping performance,TG of A080/PUE shifted to high temperature,the damping temperature range widened,and HGM/PUE damping factor decreased.The fillers all improved the temperature resistance of PUE composite.
关键词
聚氨酯弹性体
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复合材料
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填料
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阻尼性能
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热稳定性
Key words
polyurethane elastomer
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composite
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filler
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damping performance
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thermal stability
填料对HMDI型PUE复合材料性能影响的研究[J].
化工新型材料, 2018, 46(12): 140-145 DOI:
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基金资助
北京自然科学基金(2162031);国家重点基础研究发展计划973项目(2013CB733600);国家自然科学基金(21390202,21436002)
