发明名称 |
Ceramic fiber composition which is soluble in salt |
摘要 |
A biodegradable ceramic fiber composition for a high-temperature thermal insulator is provided. The composition includes: 58 to 67% by weight SiO2, 26 to 34% by weight CaO, 2 to 8% by weight MgO, 0 to 1% by weight Al2O3, 0 to 5% by weight B2O3, 0 to 3% by weight Na2O+K2O, and 1% by weight or less impurities selected from TiO2 and Fe2O3. The composition has a linear thermal contraction coefficient of 3% or less (when maintained at 1100° C. for 24 hours) and a dissolution rate constant of 700 ng/cm2·hr or more in a synthetic body fluid. When compared to known biodegradable ceramic fibers, the ceramic fiber composition also has a significantly improved solubility in a synthetic body fluid so that it can easily be dissolved and removed even when inhaled into the human lungs, thereby reducing harmfulness to the human body. |
申请公布号 |
US8932968(B2) |
申请公布日期 |
2015.01.13 |
申请号 |
US201013509915 |
申请日期 |
2010.11.17 |
申请人 |
KCC Corporation |
发明人 |
Lee Jin Heuk;Lee Si Moo;Kim Hong Kyeom;Jung Won Sik |
分类号 |
C03C13/00;C03C13/06;C04B35/622 |
主分类号 |
C03C13/00 |
代理机构 |
Swanson & Bratschun, L.L.C. |
代理人 |
Swanson & Bratschun, L.L.C. |
主权项 |
1. A biodegradable ceramic fiber composition for a high-temperature thermal insulator comprising:
62.1 to 66.5% by weight SiO2; 26 to 34% by weight CaO; 2.9 to 6.5% by weight MgO; 0 to 1% by weight Al2O3; 0.2 to 1.1% by weight B2O3; 0.3 to 1.1% by weight sum of B2O3, Na2O and K2O; and 1% by weight or less sum of TiO2 and Fe2O3, wherein the biodegradable ceramic fiber includes a non-fibrous material (shot) at a content of less than 33% by weight, and has a linear thermal contraction coefficient of 1.4% or less (when maintained at 1100° C. for 24 hours). |
地址 |
Seoul KR |