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首页> 外文期刊>Journal of Applied Polymer Science >Effect of fillers on thermal and mechanical properties of polyurethane elastomer
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Effect of fillers on thermal and mechanical properties of polyurethane elastomer

机译：填料对聚氨酯弹性体热力学性能的影响

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The effects of five different types of fillers on the thermal and mechanical properties of hydroxyl-terminated polybutadiene-based polyurethane elastomers were explored to develop a filled polyurethane elastomeric Liner for rocket motors with hydroxyl-terminated polybutadiene-based composite propellants. Two types of carbon black, silica, aluminum oxide, and zirconium(III)oxide were used as filler. Based on the improvement in the tensile properties and the erosion resistance achieved in the first part of the study, an ISAF-type carbon black was selected to be used as the main filler in combination with an additional filler, The second part involves the investigation of polyurethane elastomers containing a second filler in various amounts in addition to the ISAF-type carbon black used as the main filler. In addition to the thermal and mechanical properties, the processability of the uncured polyurethane mixtures were also explored by measuring the viscosity in this second part of the study. The studied fillers do not considerably change the thermal degradation temperatures and the thermal conductivity of the polyurethane elastomers with a filler content up to 16 wt %. The best improvement in the erosion resistance and tensile strength of the polyurethane elastomers with additional fillers is also achieved when filled with the ISAF-type carbon black, whereas the use of zirconium(III) oxide as additional filler provides almost no improvement in these properties. Viscosity of the uncured polyurethane mixtures increases with the increasing filler content and with the decreasing particle size of the filler. Aluminum oxide-filled elastomers seem to be the most suitable compositions having sufficiently high thermal and mechanical properties, together with the processability of uncured mixtures. (C) 1998 John Wiley & Sons, Inc. [References: 18]
机译：探索了五种不同类型的填料对羟基封端的聚丁二烯基聚氨酯弹性体的热性能和机械性能的影响，以开发一种用于羟基末端聚丁二烯基复合推进剂的火箭发动机用填充聚氨酯弹性体衬里。两种类型的炭黑，二氧化硅，氧化铝和氧化锆（III）用作填充剂。在研究的第一部分中，基于拉伸性能和耐蚀性的改进，选择了一种ISAF型炭黑作为主要填充剂，并与其他填充剂组合使用。第二部分涉及对聚氨酯弹性体，除了用作主要填料的ISAF型炭黑外，还包含各种数量的第二种填料。除了热和机械性能，还通过测量研究的第二部分中的粘度来探索未固化聚氨酯混合物的可加工性。所研究的填料没有明显改变填料含量高达16 wt％的聚氨酯弹性体的热降解温度和导热系数。当用ISAF型炭黑填充时，在添加了其他填料的聚氨酯弹性体中，其耐蚀性和拉伸强度也得到了最大的改善，而使用氧化锆（III）作为额外的填料几乎不能改善这些性能。未固化的聚氨酯混合物的粘度随着填料含量的增加和填料粒径的减小而增加。氧化铝填充的弹性体似乎是具有足够高的热和机械性能以及未固化混合物的可加工性的最合适的组合物。 （C）1998 John Wiley＆Sons，Inc. [参考：18]

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