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A biodegradable ceramic fiber composition for a heat insulating material

A technology of ceramic fiber and thermal insulation material, which is applied to containers with multiple items, holders for glass cups or glass bottles, containers, etc., which can solve the problems of being unsuitable for large-scale production and poor high-temperature thermal insulation performance.

Active Publication Date: 2009-02-25
KCC CORP CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0010] However, the fibers prepared by the above method have an average fiber diameter of 6 μm or thicker, so that if they are made into fibers, their high-temperature thermal insulation performance will be deteriorated.
Moreover, since the natural raw materials that provide MgO, such as dolomite, magnesite, bitterite, periclase, talc or other similar materials, mostly contain a large amount of CaO, in order to meet the conditions of the above patents, relatively expensive MgO needs to be purified to high purity for re-use, therefore, they are not economically suitable as raw materials for mass production

Method used

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  • A biodegradable ceramic fiber composition for a heat insulating material
  • A biodegradable ceramic fiber composition for a heat insulating material
  • A biodegradable ceramic fiber composition for a heat insulating material

Examples

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Embodiment 2

[0082] Test Example 2: Biodegradability and Thermal Linear Shrinkage

[0083] Table 3 below shows the dissolution rate constant and thermal linear shrinkage (1100° C. / 24 hours) in artificial body fluids of each fiber composition prepared according to the foregoing examples and comparative examples.

[0084] Table 3: Dissolution rate constants and thermal linear shrinkage in artificial body fluids

[0085] serial number

Dissolution rate constant

K dis (ng / cm 2 ·hr) Linear shrinkage (%)

(1100℃ / 24 hours) Example 1 252 1.5 Example 2 273 2.3 Example 3 302 1.6 Example 4 423 2.1 Example 5 451 2.4 Example 6 380 1.9 Example 7 326 2.4 Comparative example 1 3 1.4 Comparative example 2 15 1.1 Comparative example 3 129 2.7 Comparative example 4 182 2.9 Comparative example 5 116 2.6 Comparative example 6 85 2.1 Comparative example 7 550 6.9 Comparative example 8 4...

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Abstract

The present invention relates to a biodegradable ceramic fiber composition for high-temperature heat insulating material having good solubility in artificial body fluid, more specifically, a biodegradable ceramic fiber composition for high-temperature heat insulating material comprising network former oxide (SiO2) as a main component, modifier oxides (CaO, MgO, Na2O and K2O) and intermediate oxides (ZrO2 and Al2O3) with appropriate ratios, the composition having good solubility in body fluid; good high- temperature properties; good solubility in body fluid even in high- viscosity range of high SiO2 content through controlling the content of R2O wherein R is alkali metal; and good heat resistance, good compressive strength and good restoration when used at high temperature through controlling the content of CaO + MgO; and from which the fiber can be produced easily and economically by using conventional equipments with high production yield.

Description

field of invention [0001] The present invention relates to a biodegradable ceramic fiber composition for high temperature heat insulation materials, more particularly, to such a biodegradable ceramic fiber composition for high temperature heat insulation materials, which contains as The network former oxide (SiO 2 ), and the network exosome oxides (CaO, MgO, Na 2 O and K 2 O) and intermediate oxides (ZrO 2 and Al 2 o 3 ). The composition has good biodegradability; good high temperature performance by controlling the amount of crystallites deposited and grown during heat treatment; by controlling R 2 O content, where R is an alkali metal, even at high SiO 2 It has good biodegradability in the high viscosity region of the content, thereby reducing the harm to the human body when the ceramic fiber powder is inhaled; and has good thermal properties sufficient for application at high temperatures by controlling the content of CaO+MgO , mechanical properties, such as good he...

Claims

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Application Information

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IPC IPC(8): C03C13/00
CPCC04B2235/727C04B2235/72C04B2235/3409C04B2235/3206C04B2235/3201C04B2235/5264C03C2213/02C04B35/6224C04B2235/3232C03C13/00C04B2235/3272C04B2235/3217C04B2235/3208C04B2235/3244A47G23/0216B65D71/40B65D71/70
Inventor 吴侊锡金贤洙徐今德金炯成丁永声郑元植
Owner KCC CORP CO LTD
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