A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
POROUS CERAMIC, PRODUCTION METHOD THEREOF, AND COOLING APPARATUS
PROBLEM TO BE SOLVED: To provide a porous ceramic that has less variation of pore size, and a production method thereof and a cooling apparatus.SOLUTION: The method includes: mixing ceramic particles 1 into an aqueous solution of gelation-possible water-soluble polymer 2, to produce a suspension, and gelating the same to temporarily immobilize the tissue; then cooling the gelated body 4 from one-way direction by using a cooling apparatus 12, allowing the ceramic particles 1 to be rearranged so as to surround the ice 5 crystals grown in columnar-shape from the one way side to the other way side and thereby creating a coarse-and-dense in the distribution of ceramic particles 1, growing a plurality of ice 5 crystals having a size of similar level from the bottom face 7 side toward the top face 8 side and forming a frost 6 having a tissue structure of becoming a communication hole; and providing the ice 5 crystal as pore 10 in a step of drying frost 6, and calcinating the same to produce a porous ceramic 11 having an average pore size of 1 to 500 μm, a porosity of 50 to 99%, and a variation in pore size of 130% or less.
【課題】気孔径のばらつきが少ない多孔質セラミックス、多孔質セラミックスの製造方法及び冷却装置の提供。【解決手段】ゲル化可能な水溶性高分子２の水溶液にセラミック粒子１を混合して懸濁体とし、それをゲル化することにより一旦組織を固定化し、次に冷却装置１２を用いてゲル化体４を一方向から冷却すると、一方向側から他方向側に柱状に成長した氷５の結晶を囲むようにセラミックス粒子１が再配列され、これによりセラミックス粒子１の分布に粗密が生じ、同程度の大きさを有する複数の氷５の結晶が下面７側から上面８側に向かって成長し、連通孔となる組織構造を有する凍結体６が生成される。凍結体６の乾燥工程において氷５の結晶を気孔１０として付与し、これを焼成することにより平均気孔径が１〜５００μｍであり、気孔率が５０〜９９％であり、気孔径のばらつきが１３０％以下である多孔質セラミックス１１を得ることができる。【選択図】図１
POROUS CERAMIC, PRODUCTION METHOD THEREOF, AND COOLING APPARATUS
PROBLEM TO BE SOLVED: To provide a porous ceramic that has less variation of pore size, and a production method thereof and a cooling apparatus.SOLUTION: The method includes: mixing ceramic particles 1 into an aqueous solution of gelation-possible water-soluble polymer 2, to produce a suspension, and gelating the same to temporarily immobilize the tissue; then cooling the gelated body 4 from one-way direction by using a cooling apparatus 12, allowing the ceramic particles 1 to be rearranged so as to surround the ice 5 crystals grown in columnar-shape from the one way side to the other way side and thereby creating a coarse-and-dense in the distribution of ceramic particles 1, growing a plurality of ice 5 crystals having a size of similar level from the bottom face 7 side toward the top face 8 side and forming a frost 6 having a tissue structure of becoming a communication hole; and providing the ice 5 crystal as pore 10 in a step of drying frost 6, and calcinating the same to produce a porous ceramic 11 having an average pore size of 1 to 500 μm, a porosity of 50 to 99%, and a variation in pore size of 130% or less.
【課題】気孔径のばらつきが少ない多孔質セラミックス、多孔質セラミックスの製造方法及び冷却装置の提供。【解決手段】ゲル化可能な水溶性高分子２の水溶液にセラミック粒子１を混合して懸濁体とし、それをゲル化することにより一旦組織を固定化し、次に冷却装置１２を用いてゲル化体４を一方向から冷却すると、一方向側から他方向側に柱状に成長した氷５の結晶を囲むようにセラミックス粒子１が再配列され、これによりセラミックス粒子１の分布に粗密が生じ、同程度の大きさを有する複数の氷５の結晶が下面７側から上面８側に向かって成長し、連通孔となる組織構造を有する凍結体６が生成される。凍結体６の乾燥工程において氷５の結晶を気孔１０として付与し、これを焼成することにより平均気孔径が１〜５００μｍであり、気孔率が５０〜９９％であり、気孔径のばらつきが１３０％以下である多孔質セラミックス１１を得ることができる。【選択図】図１
POROUS CERAMIC, PRODUCTION METHOD THEREOF, AND COOLING APPARATUS
多孔質セラミックス、多孔質セラミックスの製造方法および冷却装置
KUROMURA TETSUMUNE (author) / FUKUSHIMA MANABU (author) / YOSHIZAWA YUICHI (author)
2015-06-22
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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