Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ceramic precursor polymer suitable for photocuring molding
The invention discloses a synthesis method of light-cured acrylamide polysilazane and a method for preparing SiC-Si3N4 composite ceramic by taking the light-cured acrylamide polysilazane as a ceramic precursor through pyrolysis. The preparation method comprises the following steps: mixing trimethylchlorosilane, methyl vinyl dichlorosilane, diphenyl dichlorosilane, dimethyl dichlorosilane, methyl dichlorosilane and methyl trichlorosilane according to a certain ratio, and carrying out ammonolysis at room temperature; and filtering and carrying out reduced pressure distillation to obtain liquid polysilazane. Polysilazane N-Li salt reacts with acryloyl chloride to prepare N-acrylamido polysilazane, and after a photosensitizer is added, the N-acrylamido polysilazane is cured into a casting body under ultraviolet irradiation. The photo-cured polysilazane is pyrolyzed at 900-1200 DEG C in an inert atmosphere to obtain amorphous ceramic, and the amorphous ceramic is SiC-Si3N4 complex phase crystalline ceramic at the temperature of 1300 DEG C or above.
本发明公开了一种光固化丙烯酰胺聚硅氮烷的合成方法，和作为陶瓷前驱体热解制备SiC‑Si3N4复相陶瓷的方法。将一定比例混合三甲基氯硅烷、甲基乙烯基二氯硅烷、二苯基二氯硅烷、二甲基二氯硅烷、甲基二氯硅烷、甲基三氯硅烷，在室温下进行氨解；经过滤和减压蒸馏得到液体聚硅氮烷。聚硅氮烷N‑Li盐与丙烯酰氯反应制备N‑丙烯酰胺基聚硅氮烷，加入光敏剂后在紫外光照下固化为浇注体。光固化聚硅氮烷在惰性气氛下900‑1200℃热解得到无定形陶瓷，在1300℃以上为SiC‑Si3N4复相结晶性陶瓷。
Ceramic precursor polymer suitable for photocuring molding
The invention discloses a synthesis method of light-cured acrylamide polysilazane and a method for preparing SiC-Si3N4 composite ceramic by taking the light-cured acrylamide polysilazane as a ceramic precursor through pyrolysis. The preparation method comprises the following steps: mixing trimethylchlorosilane, methyl vinyl dichlorosilane, diphenyl dichlorosilane, dimethyl dichlorosilane, methyl dichlorosilane and methyl trichlorosilane according to a certain ratio, and carrying out ammonolysis at room temperature; and filtering and carrying out reduced pressure distillation to obtain liquid polysilazane. Polysilazane N-Li salt reacts with acryloyl chloride to prepare N-acrylamido polysilazane, and after a photosensitizer is added, the N-acrylamido polysilazane is cured into a casting body under ultraviolet irradiation. The photo-cured polysilazane is pyrolyzed at 900-1200 DEG C in an inert atmosphere to obtain amorphous ceramic, and the amorphous ceramic is SiC-Si3N4 complex phase crystalline ceramic at the temperature of 1300 DEG C or above.
本发明公开了一种光固化丙烯酰胺聚硅氮烷的合成方法，和作为陶瓷前驱体热解制备SiC‑Si3N4复相陶瓷的方法。将一定比例混合三甲基氯硅烷、甲基乙烯基二氯硅烷、二苯基二氯硅烷、二甲基二氯硅烷、甲基二氯硅烷、甲基三氯硅烷，在室温下进行氨解；经过滤和减压蒸馏得到液体聚硅氮烷。聚硅氮烷N‑Li盐与丙烯酰氯反应制备N‑丙烯酰胺基聚硅氮烷，加入光敏剂后在紫外光照下固化为浇注体。光固化聚硅氮烷在惰性气氛下900‑1200℃热解得到无定形陶瓷，在1300℃以上为SiC‑Si3N4复相结晶性陶瓷。
Ceramic precursor polymer suitable for photocuring molding
一种适合于光固化成型的陶瓷前驱体聚合物
WANG MINGCUN (Autor:in)
03.11.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
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