Serenko Olga, Andropova Ulyana, Tebeneva Nadezhda, Buzin Mihail, Afanasyev Egor, Tarasenkov Aleksander, Bukalov Sergey, Leites Larisa, Aysin Rinat, Novikov Lev, Chernik Vladimir, Voronina Ekaterina, Muzafarov Aziz
A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 28 Vavilova St., GSP-1, V-334, 119991 Moscow, Russia.
N.S. Enikolopov Institute of Synthetic Polymeric Materials of Russian Academy of Sciences, 70 Profsoyuznaya St., 117393 Moscow, Russia.
Materials (Basel). 2020 Jul 18;13(14):3204. doi: 10.3390/ma13143204.
The structure and properties of nanocomposites based on organosoluble polyimide (PI) and branched functional metallosiloxane oligomers with different types of central metal atoms (Al, Cr, Fe, Zr, Hf and Nb) were investigated. Under the same weight content of the filler, the geometric parameters of the nanoparticles and thermal properties of the nanocomposites did not exhibit a direct relationship with the ability of the materials to withstand the incident flow of oxygen plasma. The atomic oxygenerosion resistance of the filled PI films was influenced by the composition of the hybrid fillerand the type of metal atom in the hybrid filler in the base metallosiloxane oligomer. To determine the effectiveness of the nanoparticles as protective elements of the polymer surface, the nanocomposite erosion yields pertaining to the concentration of the crosslinked organo-inorganic polymer forming the dispersed phase were determined and expressed in mmol per gram PI. The filler concentration in the polymer, expressed in these units, allows for comparison of the efficiency of different nanosize fillers for use in fabricating space survivable coatings. This can be important in the pursuit of new precursors, fillers for fabricating space survivable polymer composites.
研究了基于有机可溶性聚酰亚胺（PI）和具有不同类型中心金属原子（Al、Cr、Fe、Zr、Hf和Nb）的支化功能金属硅氧烷低聚物的纳米复合材料的结构和性能。在填料重量含量相同的情况下，纳米颗粒的几何参数和纳米复合材料的热性能与材料抵抗氧等离子体入射流的能力没有直接关系。填充PI薄膜的抗原子氧侵蚀性能受杂化填料的组成以及基础金属硅氧烷低聚物中杂化填料中金属原子类型的影响。为了确定纳米颗粒作为聚合物表面保护元素的有效性，测定了与形成分散相的交联有机-无机聚合物浓度相关的纳米复合材料侵蚀产率，并以每克PI的毫摩尔数表示。以这些单位表示的聚合物中填料浓度允许比较用于制造空间可生存涂层的不同纳米尺寸填料的效率。这对于寻求用于制造空间可生存聚合物复合材料的新前体、填料可能很重要。
