Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Carbon fiber toughened silicon carbide foamed ceramic and preparation method thereof
The invention discloses a carbon fiber toughened silicon carbide foamed ceramic and a preparation method thereof, and belongs to the technical field of foamed ceramics. The carbon fiber toughened silicon carbide foamed ceramic comprises polyurethane foam and silicon carbide porous ceramic slurry, the silicon carbide porous ceramic slurry comprises the following raw materials in parts by mass: 50-70 parts of silicon carbide micro-powder, 10-20 parts of alumina micro-powder, 2-5 parts of silicon dioxide micro-powder, 1-3 parts of silicon powder, 0.5-2.5 parts of modified carbon fibers, 0.2-1.2 parts of polyacrylate, 0.05-0.35 part of carboxymethyl cellulose and 20-35 parts of deionized water. A secondary impregnation technology is not involved, so that the preparation process is simplified,and the production efficiency is improved; by adding the modified carbon fibers and silicon powder, the thermal shock stability, fracture toughness and high-temperature mechanical strength of the silicon carbide foamed ceramic are remarkably improved.
本发明公开了泡沫陶瓷技术领域的一种碳纤维增韧碳化硅泡沫陶瓷及其制备方法，包括聚氨酯泡沫和碳化硅多孔陶瓷浆料，碳化硅多孔陶瓷浆料包括以下质量份原料：碳化硅微粉50‑70份，氧化铝微粉10‑20份，二氧化硅微粉2‑5份，硅粉1‑3份，改性碳纤维0.5‑2.5份，聚丙烯酸盐0.2‑1.2份，羧甲基纤维素0.05‑0.35份，去离子水20‑35份；本发明并不涉及二次浸渍技术因此简化了制备工艺，提升了生产效率；本发明通过添加改性碳纤维和金属硅粉显著改善了碳化硅泡沫陶瓷的热震稳定性、断裂韧性和高温机械强度。
Carbon fiber toughened silicon carbide foamed ceramic and preparation method thereof
The invention discloses a carbon fiber toughened silicon carbide foamed ceramic and a preparation method thereof, and belongs to the technical field of foamed ceramics. The carbon fiber toughened silicon carbide foamed ceramic comprises polyurethane foam and silicon carbide porous ceramic slurry, the silicon carbide porous ceramic slurry comprises the following raw materials in parts by mass: 50-70 parts of silicon carbide micro-powder, 10-20 parts of alumina micro-powder, 2-5 parts of silicon dioxide micro-powder, 1-3 parts of silicon powder, 0.5-2.5 parts of modified carbon fibers, 0.2-1.2 parts of polyacrylate, 0.05-0.35 part of carboxymethyl cellulose and 20-35 parts of deionized water. A secondary impregnation technology is not involved, so that the preparation process is simplified,and the production efficiency is improved; by adding the modified carbon fibers and silicon powder, the thermal shock stability, fracture toughness and high-temperature mechanical strength of the silicon carbide foamed ceramic are remarkably improved.
本发明公开了泡沫陶瓷技术领域的一种碳纤维增韧碳化硅泡沫陶瓷及其制备方法，包括聚氨酯泡沫和碳化硅多孔陶瓷浆料，碳化硅多孔陶瓷浆料包括以下质量份原料：碳化硅微粉50‑70份，氧化铝微粉10‑20份，二氧化硅微粉2‑5份，硅粉1‑3份，改性碳纤维0.5‑2.5份，聚丙烯酸盐0.2‑1.2份，羧甲基纤维素0.05‑0.35份，去离子水20‑35份；本发明并不涉及二次浸渍技术因此简化了制备工艺，提升了生产效率；本发明通过添加改性碳纤维和金属硅粉显著改善了碳化硅泡沫陶瓷的热震稳定性、断裂韧性和高温机械强度。
Carbon fiber toughened silicon carbide foamed ceramic and preparation method thereof
一种碳纤维增韧碳化硅泡沫陶瓷及其制备方法
LI SAISAI (Autor:in) / JIN XINXIN (Autor:in) / LI MINGHUI (Autor:in) / CHEN RUOYU (Autor:in) / CHANG BING (Autor:in)
16.03.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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