IP Library › Granted Patent US 12,503,400
Granted Patent B2
US 12,503,400 · App. 18/007,642 · Granted Dec 23, 2025

Composite article comprising aerogel particles and ceramic fiber sheets

Inventors: Patric Somberg (Münster, DE); Pavel Holub (Münster, DE); Stephan Möller (Münster, DE); Zhicheng Zheng (Münster, DE)
Assignee: ARMACELL ENTERPRISE GMBH & CO. KG
C04B30/02C04B14/4656C04B28/24C04B35/14C04B35/6264C04B38/0045C04B41/463C04B41/5035C04B2111/28C04B2111/285C04B2201/00C04B2201/30C04B2235/3418C04B2235/5228C04B2235/526C04B2235/9607
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Quick Facts
Patent No.
US 12,503,400
App. No.
18/007,642
Granted
Dec 23, 2025
Kind
B2
Abstract

A method for the preparation of a composite article containing aerogel particles and ceramic fibers, as well as to a composite article obtained by this method, are described.

Claims (16)

1 . A method for the preparation of a composite article comprising aerogel particles and ceramic fibers, the method comprising:

providing a fibrous article comprising ceramic fibers,

providing an aerogel composition comprising an aerogel powder and an organic solvent,

combining the fibrous article and the aerogel composition, and

partially or completely removing the organic solvent to obtain the composite article,

wherein the composite article has a thickness of less than 3 mm,

wherein the ceramic fiber comprises 80 wt.-% or more of alimina and less than 2 wt.-% of components other than silica and alumina, based on the total weight of the ceramic fibers.

2 . The method for the preparation of a composite article according to claim 1 , wherein the organic solvent is a hydrocarbon solvent or an alcohol solvent or any mixture thereof.

3 . The method for the preparation of a composite article according to claim 1 , wherein the aerogel is silica aerogel.

4 . The method for the preparation of a composite article according to claim 1 , wherein the aerogel has a porosity of 85% or higher, as determined by isotherm adsorption and desorption.

5 . The method for the preparation of a composite article according to claim 1 , wherein the aerogel has a specific surface area of 300 m 2 /g or higher, as determined by DIN ISO 9277 2003-05 (Determination of the specific surface area of solids by gas adsorption using the BET method).

6 . The method for the preparation of a composite article according to claim 1 , wherein the aerogel composition is a dispersion of the aerogel powder in the organic solvent, and the combined content of aerogel powder and organic solvent in the aerogel composition is 90 wt.-% or more, based on the total weight of the aerogel composition.

7 . The method for the preparation of a composite article according to claim 1 , wherein the fibrous article and the aerogel composition are combined by injecting or impregnating the aerogel composition into the fibrous article.

8 . The method for the preparation of a composite article according to claim 1 , wherein the composite article contains 15 to 70 wt.-% aerogel based on the total weight of the composite article.

9 . The method for the preparation of a composite article according to claim 1 , wherein at least 50% of the fibers in the composite article have a length of 10 mm or more.

10 . The method for the preparation of a composite article according to claim 1 , wherein a weight ratio of the aerogel particles to the ceramic fibers in the composite article is 1:4 or higher.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 3, 2022
From: SOMBERG, PATRIC; HOLUB, PAVEL; MÖLLER, STEPHAN; ZHENG, ZHICHENG
To: ARMACELL ENTERPRISE GMBH & CO. KG
Reel/Frame 061963/0732 →
Priority Claims (1)
EP 21161398 · Mar 9, 2021 · regional
Continuity (1)
Related Publication 20230227364A1 · Jul 20, 2023
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