氧化石墨烯/多面体低聚倍半硅氧烷增强双马树脂合成及其性能表征
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北京遥感设备研究所,北京 100854

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TQ637.

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Preparation and Charaterization of Graphene Oxide/Polyhdral Oligosilsesquioxanes Modified Bismaleimide Resin
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Beijing Institute of Remote Sensing Equipment,Beijing 100854

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    摘要:

    在酸掺杂条件下,原位合成了多面体低聚倍半硅氧烷(POSS)插层氧化石墨烯(GO)的GO/POSSC-I复合材料。通过SEM、XRD、IR等手段对合成材料进行表。征结果表明,大量具有核-壳结构的无机-有机杂化POSS纳米粒子插层至片层结构GO表面。在增强双马树脂固化过程中,GO/POSSC-I良好分散于双马树脂基体中形成黑色均匀固化物。DMA试验结果表明,GO/POSSC-I增强粒子对基体中有机碳链运动形成了显著的限制作用,提升材料热稳定性能,最佳玻璃化转变温度相比未增强双马树脂提升约127 ℃;同时,GO/POSSC-I能够通过裂纹钝化或拨出效应,增强材料力学性能,弯曲强度和弯曲模量相比未增强双马树脂分别提升16.5 %和3.4 %。

    Abstract:

    The prepare graphene oxide/polyhdral oligosilsesquioxanes (GO/POSSC-I) composite was prepared by the in-situ method under acid and miscellaneous conditions. SEM, XRD and IR were performed to characterize morphologies and crystallizations of as-prepared material. The results show that considerable inorganic-organic hybrid POSS nano-material with shell-core structure is inserted into the surfaces of well dispersed lamllar GO. In the curing process of modified bismaleimide(BMI) resin, GO/POSSC-I composite material is well dispersed in the matrix of resin to form homogeneous black cured compound resin. Results of DMA tests show that GO/POSSC-I composite material has obvious restriction effect on the movement of organic carbon chains and improve the thermal stability of material.The optimum glass transition temperature is 27℃ higher than that of unmodified bismaleimide resin. Furthermore, the mechincal properties of composite are improved because of the crack passivation or pull-out effect of GO/POSSC-I composite. The bending strength and modulus of modified BMI resin are incresed by 16.5% and 3.4% ,respectively.

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刘迅,刘俊杰,贾海斌,王代兴,李晨东.氧化石墨烯/多面体低聚倍半硅氧烷增强双马树脂合成及其性能表征[J].宇航材料工艺,2023,53(4):48-54.

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  • 收稿日期:2021-07-01
  • 最后修改日期:2021-09-26
  • 录用日期:2021-09-28
  • 在线发布日期: 2023-08-30
  • 出版日期:
第五届航天高分子材料制备与应用工艺技术交流会 征文通知

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