Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Lightweight high-heat-insulation ultrahigh-temperature ceramic material as well as preparation method and application thereof
The invention discloses a lightweight high-heat-insulation ultrahigh-temperature ceramic material and a preparation method and application thereof.The preparation method comprises the steps that spherical thin-wall empty shell powder is put into a mold, and after vibration compaction, the temperature is increased to 1500 DEG C from the room temperature to be fired into a block material; and continuously heating the block from 1500 DEG C to 1600 DEG C, preserving heat, cooling, and naturally cooling to obtain the lightweight high-heat-insulation superhigh-temperature ceramic material. According to the invention, the requirements of light weight, high heat insulation and higher temperature resistance of an ultrahigh-temperature material are met, so that the material can be used at 1600 DEG C; compared with an ultra-high-temperature material, the lightweight high-heat-insulation ultra-high-temperature ceramic material disclosed by the invention has the outstanding substantive characteristics that (1) the lightweight high-heat-insulation ultra-high-temperature ceramic material is relatively light, and the apparent density is 1.75 +/-0.1 g/cm < 3 >; and the porosity is greater than 70%. (2) the lightweight high-heat-insulation ultra-high-temperature ceramic material is resistant to sintering, the spherical thin-wall hollow shell structure of the powder can still be maintained after 10h at 1600 DEG C, and the sintering linear shrinkage rate is less than 5%; and (3) the lightweight high-heat-insulation superhigh-temperature ceramic material is relatively high in heat insulation, and the heat conductivity is 0.17 W/(m.K).
本发明公开了一种轻质高隔热超高温陶瓷材料及其制备方法和应用，包括：将球形薄壁空壳粉体放入模具中，经过振实后从室温升温至1500℃烧制为块材；将块材从1500℃继续升温至1600℃，保温，降温，自然冷却得到轻质高隔热超高温陶瓷材料。本发明解决了超高温材料轻质、高隔热，耐更高温度材料的需求，使该材料可以在1600℃使用；与超高温材料相比，根据本发明的轻质高隔热超高温陶瓷材料具有突出的实质性特点：(1)轻质高隔热超高温陶瓷材料较轻，表观密度为1.75±0.1g/cm3；孔隙率＞70％。(2)轻质高隔热超高温陶瓷材料耐烧结，1600℃10h后仍可保持粉体球形薄壁空壳结构，烧结线收缩率＜5％；(3)轻质高隔热超高温陶瓷材料隔热较高，热导率为～0.17W/(m·K)。
Lightweight high-heat-insulation ultrahigh-temperature ceramic material as well as preparation method and application thereof
The invention discloses a lightweight high-heat-insulation ultrahigh-temperature ceramic material and a preparation method and application thereof.The preparation method comprises the steps that spherical thin-wall empty shell powder is put into a mold, and after vibration compaction, the temperature is increased to 1500 DEG C from the room temperature to be fired into a block material; and continuously heating the block from 1500 DEG C to 1600 DEG C, preserving heat, cooling, and naturally cooling to obtain the lightweight high-heat-insulation superhigh-temperature ceramic material. According to the invention, the requirements of light weight, high heat insulation and higher temperature resistance of an ultrahigh-temperature material are met, so that the material can be used at 1600 DEG C; compared with an ultra-high-temperature material, the lightweight high-heat-insulation ultra-high-temperature ceramic material disclosed by the invention has the outstanding substantive characteristics that (1) the lightweight high-heat-insulation ultra-high-temperature ceramic material is relatively light, and the apparent density is 1.75 +/-0.1 g/cm < 3 >; and the porosity is greater than 70%. (2) the lightweight high-heat-insulation ultra-high-temperature ceramic material is resistant to sintering, the spherical thin-wall hollow shell structure of the powder can still be maintained after 10h at 1600 DEG C, and the sintering linear shrinkage rate is less than 5%; and (3) the lightweight high-heat-insulation superhigh-temperature ceramic material is relatively high in heat insulation, and the heat conductivity is 0.17 W/(m.K).
本发明公开了一种轻质高隔热超高温陶瓷材料及其制备方法和应用，包括：将球形薄壁空壳粉体放入模具中，经过振实后从室温升温至1500℃烧制为块材；将块材从1500℃继续升温至1600℃，保温，降温，自然冷却得到轻质高隔热超高温陶瓷材料。本发明解决了超高温材料轻质、高隔热，耐更高温度材料的需求，使该材料可以在1600℃使用；与超高温材料相比，根据本发明的轻质高隔热超高温陶瓷材料具有突出的实质性特点：(1)轻质高隔热超高温陶瓷材料较轻，表观密度为1.75±0.1g/cm3；孔隙率＞70％。(2)轻质高隔热超高温陶瓷材料耐烧结，1600℃10h后仍可保持粉体球形薄壁空壳结构，烧结线收缩率＜5％；(3)轻质高隔热超高温陶瓷材料隔热较高，热导率为～0.17W/(m·K)。
Lightweight high-heat-insulation ultrahigh-temperature ceramic material as well as preparation method and application thereof
一种轻质高隔热超高温陶瓷材料及其制备方法和应用
TIAN WEIZHI (Autor:in) / XU BAOWEN (Autor:in) / WANG XIN (Autor:in) / JIANG KUO (Autor:in)
23.02.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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