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Benzene ring-containing hyperbranched polyborosilazane converted amorphous SiBCN wave-absorbing ceramic and preparation method thereof
The invention discloses benzene ring-containing hyperbranched polyborosilazane converted amorphous SiBCN wave-absorbing ceramic and a preparation method thereof, and belongs to the field of electromagnetic wave absorbing materials. The method comprises the following steps: injecting a borane dimethyl sulfide complex and methyl vinyl dichlorosilane into a Schlenk reaction flask under an ice bath condition, and reacting to obtain tri (dichloromethylsilyl ethyl) borane; then injecting reaction monomers, namely dichloromethylsilane and dichlorodiphenyl silane, into the reaction bottle, carrying out heating reaction, and cooling to obtain a hyperbranched polyborosilazane precursor containing a benzene ring; transferring the precursor into a high-temperature tube furnace for thermal crosslinking, then pressing the precursor into a blank, and regulating and controlling a high-temperature pyrolysis program to prepare the amorphous SiBCN wave-absorbing ceramic.
本发明公开了一种含苯环超支化聚硼硅氮烷转化无定型SiBCN吸波陶瓷及其制备方法，属于电磁波吸收材料领域。该方法包括以下步骤：在冰浴条件下将硼烷二甲基硫醚络合物、甲基乙烯基二氯硅烷注入Schlenk反应瓶中反应，得到三(二氯甲基硅乙基)硼烷；然后将反应单体二氯甲基硅烷与二氯二苯基硅烷注入所述反应瓶中，加热反应，待其冷却后即可得到含苯环超支化聚硼硅氮烷前驱体；将所述前驱体转移到高温管式炉中进行热交联，再压制成胚体，调控高温热解程序，制备得到所述的无定型SiBCN吸波陶瓷。
Benzene ring-containing hyperbranched polyborosilazane converted amorphous SiBCN wave-absorbing ceramic and preparation method thereof
The invention discloses benzene ring-containing hyperbranched polyborosilazane converted amorphous SiBCN wave-absorbing ceramic and a preparation method thereof, and belongs to the field of electromagnetic wave absorbing materials. The method comprises the following steps: injecting a borane dimethyl sulfide complex and methyl vinyl dichlorosilane into a Schlenk reaction flask under an ice bath condition, and reacting to obtain tri (dichloromethylsilyl ethyl) borane; then injecting reaction monomers, namely dichloromethylsilane and dichlorodiphenyl silane, into the reaction bottle, carrying out heating reaction, and cooling to obtain a hyperbranched polyborosilazane precursor containing a benzene ring; transferring the precursor into a high-temperature tube furnace for thermal crosslinking, then pressing the precursor into a blank, and regulating and controlling a high-temperature pyrolysis program to prepare the amorphous SiBCN wave-absorbing ceramic.
本发明公开了一种含苯环超支化聚硼硅氮烷转化无定型SiBCN吸波陶瓷及其制备方法，属于电磁波吸收材料领域。该方法包括以下步骤：在冰浴条件下将硼烷二甲基硫醚络合物、甲基乙烯基二氯硅烷注入Schlenk反应瓶中反应，得到三(二氯甲基硅乙基)硼烷；然后将反应单体二氯甲基硅烷与二氯二苯基硅烷注入所述反应瓶中，加热反应，待其冷却后即可得到含苯环超支化聚硼硅氮烷前驱体；将所述前驱体转移到高温管式炉中进行热交联，再压制成胚体，调控高温热解程序，制备得到所述的无定型SiBCN吸波陶瓷。
Benzene ring-containing hyperbranched polyborosilazane converted amorphous SiBCN wave-absorbing ceramic and preparation method thereof
一种含苯环超支化聚硼硅氮烷转化无定型SiBCN吸波陶瓷及其制备方法
LUO CHUNJIA (author) / WANG YI (author) / HU XI (author) / WANG YIN (author) / YAN LUKE (author)
2023-11-10
Patent
Electronic Resource
Chinese
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