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Methods and formulations for joining ceramic foam while maintaining structural and physical properties on bonded surfaces

A technology for ceramics and bonding materials, used in chemical instruments and methods, cellulose adhesives, ceramic layered products, etc.

Active Publication Date: 2021-03-16
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] While known methods of bonding porous ceramic components have had limited success, challenges remain

Method used

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  • Methods and formulations for joining ceramic foam while maintaining structural and physical properties on bonded surfaces
  • Methods and formulations for joining ceramic foam while maintaining structural and physical properties on bonded surfaces
  • Methods and formulations for joining ceramic foam while maintaining structural and physical properties on bonded surfaces

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Experimental program
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Embodiment

[0044] The raw bonding material is prepared by combining the following ingredients:

[0045] Nextel TM 312 (alumina-boria-silica) chopped fibers-12wt%;

[0046] Lithium metaborate powder - 0.1wt%;

[0047] Methylcellulose - 88wt%;

[0048] water on demand.

[0049] The raw bonding material was used to bond two silica-rich fiber tile substrates with approximately 90-95% pore volume.

[0050] The bonding material is spread or rubbed onto the bonding surfaces of each of the two bonded tile substrates with a spatula, after which the bonding surfaces are immediately bonded bonding face to bonding face. The bonded faces are then slightly twisted or "ground" together to ensure face-to-face contact and potential co-mingling of the fiber faces. A weight is placed on top of one bonding member and the adhesive is allowed to air dry to form a green bond. The green bonding material is then cured to form a cured bond.

[0051] The resulting bond between the two tile substrates was vi...

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Abstract

The present invention relates to methods and formulations for joining ceramic foams while maintaining structural and physical properties on the bonded surfaces. The ceramic bonding material includes at least one fiber material, a flux and a thickener, wherein the ceramic bonding material is calcined at a set temperature to bond two adjacent substrate surfaces.

Description

technical field [0001] The present invention relates to methods and formulations for joining ceramic foams while maintaining structural and physical properties on the bonded surfaces. Background technique [0002] The present invention generally relates to bonded ceramic foam materials together using a bonding composition comprising one or more fibrous materials, bonding fluxes and thickeners to form a well bonded interface. [0003] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0004] Ceramic foams are well known for their superior mechanical properties and stability at high temperatures, and have been widely used as high-temperature structural materials in many fields, including in aerospace. Due to fabrication constraints and / or different three-dimensional surfaces, it is difficult to fabricate large ceramic foam structures from monolithic ceramic materials. Therefore, large cer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B37/00C09J101/02B32B7/027
CPCC04B37/001C09J101/02C04B2237/30B32B7/027C04B35/6269C04B35/6365C04B37/005C04B37/008C04B37/025C04B37/028C04B2235/522C04B2235/5224C04B2235/5228C04B2235/5232C04B2235/5236C04B2235/524C04B2235/5244C04B2235/5248C04B2235/526C04B2235/9607C04B2237/062C04B2237/064C04B2237/068C04B2237/08C04B2237/083C04B2237/086C04B2237/34C04B2237/341C04B2237/343C04B2237/346C04B2237/348C04B2237/36C04B2237/365C04B2237/366C04B2237/38C04B2237/401C04B2237/52C04B2237/561C04B2237/597C04B2237/708B32B5/32B32B7/025B32B7/12B32B18/00B32B37/06C04B41/80C08K3/38C09J1/00C04B41/0072C04B41/009B32B2305/72B32B2262/105B32B2262/106C08K2003/387C04B2237/32B32B2266/06B32B37/1207B32B2309/02B32B2315/02B32B2305/22
Inventor T·H·克鲁克斯M·S·穆恩齐
Owner THE BOEING CO