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Large-particle porous ceramic and preparation method thereof
The invention discloses large-particle porous ceramic and a preparation method thereof. The large-particle porous ceramic comprises a main material and an adhesive, wherein the range of the particle size D50 of the main material is 50-1500 [mu]m, and the adhesive is composed of a low-temperature adhesive and a high-temperature adhesive. According to the invention, a ceramic main material, an adhesive and other additives are mixed to form a solid mixture or slurry, a mold cavity is filled, pressing or pouring is performed to form a green body, and the green body is fired to form the large-particle porous ceramic; the obtained large-particle porous ceramic does not need to refine ceramic particles, so that the limitation on the particle size, purity and the like of raw materials in the prior art is reduced, and the application range is wide; and the porous ceramic prepared by the method is used in cooperation with a low-temperature adhesive and a high-temperature adhesive, and rapid and uniform bonding of the porous ceramic at the temperature of 1000 DEG C or below is realized in low-temperature degreasing and glue discharging and medium-high-temperature bonding sintering, so that the open porosity can reach 95% or above, and the bending strength is not smaller than 2 MPa.
本发明公开了一种大颗粒多孔陶瓷及其制备方法，大颗粒多孔陶瓷包括主料和粘合剂；所述主料的粒径D50范围为50～1500μm；所述粘合剂由低温粘合剂和高温粘合剂组成。通过陶瓷主料、粘合剂等添加剂混合，形成固体混合物或浆料，模腔填料、压制或浇注形成坯体，烧制形成大颗粒多孔陶瓷。所得大颗粒多孔陶瓷无需将陶瓷颗粒细化处理，减少了现有技术对于原料粒径、纯度等的限制，适用范围广；并与低温粘合剂、高温粘合剂的配合使用，在低温脱脂排胶、中高温粘合烧结，实现了1000℃以下多孔陶瓷的快速、均匀粘结，使开气孔率可达到95％以上，弯曲强度不小于2MPa。
Large-particle porous ceramic and preparation method thereof
The invention discloses large-particle porous ceramic and a preparation method thereof. The large-particle porous ceramic comprises a main material and an adhesive, wherein the range of the particle size D50 of the main material is 50-1500 [mu]m, and the adhesive is composed of a low-temperature adhesive and a high-temperature adhesive. According to the invention, a ceramic main material, an adhesive and other additives are mixed to form a solid mixture or slurry, a mold cavity is filled, pressing or pouring is performed to form a green body, and the green body is fired to form the large-particle porous ceramic; the obtained large-particle porous ceramic does not need to refine ceramic particles, so that the limitation on the particle size, purity and the like of raw materials in the prior art is reduced, and the application range is wide; and the porous ceramic prepared by the method is used in cooperation with a low-temperature adhesive and a high-temperature adhesive, and rapid and uniform bonding of the porous ceramic at the temperature of 1000 DEG C or below is realized in low-temperature degreasing and glue discharging and medium-high-temperature bonding sintering, so that the open porosity can reach 95% or above, and the bending strength is not smaller than 2 MPa.
本发明公开了一种大颗粒多孔陶瓷及其制备方法，大颗粒多孔陶瓷包括主料和粘合剂；所述主料的粒径D50范围为50～1500μm；所述粘合剂由低温粘合剂和高温粘合剂组成。通过陶瓷主料、粘合剂等添加剂混合，形成固体混合物或浆料，模腔填料、压制或浇注形成坯体，烧制形成大颗粒多孔陶瓷。所得大颗粒多孔陶瓷无需将陶瓷颗粒细化处理，减少了现有技术对于原料粒径、纯度等的限制，适用范围广；并与低温粘合剂、高温粘合剂的配合使用，在低温脱脂排胶、中高温粘合烧结，实现了1000℃以下多孔陶瓷的快速、均匀粘结，使开气孔率可达到95％以上，弯曲强度不小于2MPa。
Large-particle porous ceramic and preparation method thereof
一种大颗粒多孔陶瓷及其制备方法
WANG CHENG (author) / YANG JIANRONG (author) / WANG ZICHAO (author)
2021-08-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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