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Ceramic-based high-toughness high-temperature binder and method for improving performance of ceramic-based high-toughness high-temperature binder
The invention relates to a ceramic-based high-toughness high-temperature adhesive and a method for improving the performance of the ceramic-based high-toughness high-temperature adhesive, and belongs to the technical field of ceramic adhesives. Aiming at the problems of high brittleness and easy fracture of the existing high-temperature binder, the binder is prepared by taking a SiHfBCN ceramic precursor as a matrix, PSO as a polymer additive and TiB2 and SiC NWs as fillers according to the mass ratio of 8: 3: 2: (0.12-0.5), and a SiC NWs reinforced phase is uniformly dispersed in the binder and firmly combined with the interface of the binder through an optimized preparation process, so that the high-temperature binder is prepared. The ceramic yield is effectively improved, and the strength and toughness of the adhesive are enhanced. After pyrolysis, the room-temperature bonding strength and the high-temperature bonding strength of the binder are greatly improved, the fracture displacement at high temperature is obviously increased, the binder is in a ductile fracture mode, the fracture displacement is maximally improved by 106%, and it is indicated that the strength and the toughness of the binder prepared through the method are improved.
本发明为一种陶瓷基高韧性高温粘结剂及提高陶瓷基高韧性高温粘结剂性能的方法，属于陶瓷粘粘剂技术领域。针对目前高温粘结剂存在的脆性大易断裂问题，本发明以SiHfBCN陶瓷前驱体为基体、以PSO为聚合物添加剂，以TiB2和SiC NWs为填料，并将其按质量比8:3:2:0.12～0.5制备出粘结剂，并经过优化制备工艺使SiC NWs增强相在粘结剂中均匀分散并与粘结剂的界面牢固结合，有效提高陶瓷产率、增强粘粘剂的强度和韧性。热解后，粘结剂的室温粘结强度和高温粘结强度均得到较大提升，高温下的断裂位移明显增大，且呈韧性断裂模式，断裂位移最大提升了106％，表明本发明制备的粘结剂的强度和韧性均得到提升。
Ceramic-based high-toughness high-temperature binder and method for improving performance of ceramic-based high-toughness high-temperature binder
The invention relates to a ceramic-based high-toughness high-temperature adhesive and a method for improving the performance of the ceramic-based high-toughness high-temperature adhesive, and belongs to the technical field of ceramic adhesives. Aiming at the problems of high brittleness and easy fracture of the existing high-temperature binder, the binder is prepared by taking a SiHfBCN ceramic precursor as a matrix, PSO as a polymer additive and TiB2 and SiC NWs as fillers according to the mass ratio of 8: 3: 2: (0.12-0.5), and a SiC NWs reinforced phase is uniformly dispersed in the binder and firmly combined with the interface of the binder through an optimized preparation process, so that the high-temperature binder is prepared. The ceramic yield is effectively improved, and the strength and toughness of the adhesive are enhanced. After pyrolysis, the room-temperature bonding strength and the high-temperature bonding strength of the binder are greatly improved, the fracture displacement at high temperature is obviously increased, the binder is in a ductile fracture mode, the fracture displacement is maximally improved by 106%, and it is indicated that the strength and the toughness of the binder prepared through the method are improved.
本发明为一种陶瓷基高韧性高温粘结剂及提高陶瓷基高韧性高温粘结剂性能的方法，属于陶瓷粘粘剂技术领域。针对目前高温粘结剂存在的脆性大易断裂问题，本发明以SiHfBCN陶瓷前驱体为基体、以PSO为聚合物添加剂，以TiB2和SiC NWs为填料，并将其按质量比8:3:2:0.12～0.5制备出粘结剂，并经过优化制备工艺使SiC NWs增强相在粘结剂中均匀分散并与粘结剂的界面牢固结合，有效提高陶瓷产率、增强粘粘剂的强度和韧性。热解后，粘结剂的室温粘结强度和高温粘结强度均得到较大提升，高温下的断裂位移明显增大，且呈韧性断裂模式，断裂位移最大提升了106％，表明本发明制备的粘结剂的强度和韧性均得到提升。
Ceramic-based high-toughness high-temperature binder and method for improving performance of ceramic-based high-toughness high-temperature binder
一种陶瓷基高韧性高温粘结剂及提高陶瓷基高韧性高温粘结剂性能的方法
ZHU XIYUE (author) / LI MIN (author) / XU XINGYA (author) / LUAN XINGANG (author) / CHENG LAIFEI (author)
2024-04-02
Patent
Electronic Resource
Chinese
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