Ceramic high-temperature sealant as well as preparation method and gluing method thereof

The invention relates to the field of ceramic sealants, and discloses a ceramic high-temperature sealant, which aims to solve the problem of poor sealing performance of a bonded part caused by gaps and air holes generated during high-temperature bonding of inorganic glue in the prior art, and comprises the following components in parts by weight: 50-70 parts of silicon dioxide, 2-10 parts of calcium oxide, 3-10 parts of magnesium oxide, 10-25 parts of aluminum oxide and 10-20 parts of boron oxide. The sealant has a good bonding effect with a workpiece, can be suitable for a high-temperature environment, and has good aging resistance. The invention further provides a gluing method using the ceramic high-temperature sealant, zero pore defect of a workpiece and a sealant layer can be achieved by using the gluing method, and good sealing performance is achieved. 本发明涉及陶瓷密封胶领域，为解决现有技术下无机胶水高温粘结时产生空隙和气孔，造成粘结件的密封性能差的问题，公开了一种陶瓷高温密封胶，包括如下重量份的组分：50-70份二氧化硅、2-10份氧化钙、3-10份氧化镁、10-25份氧化铝和10-20份氧化硼，该密封胶与工件之间结合效果好，可适用于高温环境，耐老化