Acid-resistant composite ceramic as well as preparation method and application thereof

The invention discloses an acid-resistant composite ceramic and a preparation method and application thereof, the acid-resistant composite ceramic is formed by thermocuring slurry, and the slurry comprises the following components in parts by weight: 100 parts of polyimide resin; 20 to 30 parts of epoxy resin; 8-16 parts of a curing agent; 10 to 20 parts of nano silicon dioxide; 10 to 20 parts of reinforcing fiber; 0.5 to 1.1 parts of a coupling agent; 0.8-1.2 parts of a dispersing agent; 5 to 10 parts of a mercaptoethanol terminated maleic anhydride grafted modified polyamide thermoplastic elastomer; and 500-700 parts of silicon carbide particles. The acid-resistant composite ceramic has good acid resistance and impact strength. 本发明公开了一种耐酸复合陶瓷及其制备方法与应用，所述耐酸复合陶瓷采用浆料热固化形成，所述浆料按重量份计包括以下组分：聚酰亚胺树脂100份；环氧树脂20-30份；固化剂8-16份；纳米二氧化硅10-20份；增强纤维10-20份；偶联剂0.5-1.1份；分散剂0.8-1.2份；巯基乙醇封端的马来酸酐接枝改性聚酰胺热塑性弹性体5-10份；碳化硅颗粒500-700份。该耐酸复合陶瓷具有良好的耐酸性能及耐冲击强度。