Honeycomb structure comprising a cement skin composition with crystalline inorganic fibrous material
US-2017044066-A1 · Feb 16, 2017 · US
Coating material for honeycomb structure, outer peripheral coating of honeycomb structure, and honeycomb structure with outer peripheral coating
US11046859B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11046859-B2 |
| Application number | US-202016800423-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 25, 2020 |
| Priority date | Feb 28, 2019 |
| Publication date | Jun 29, 2021 |
| Grant date | Jun 29, 2021 |
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Abstract
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A coating material for a honeycomb structure, the coating material containing: from 1% by mass to 10% by mass of first ceramic fibers having an average axial length of from 80 μm to 200 μm in an inorganic raw material; and from 0.1% by mass to 15% by mass of second ceramic fibers having an average axial length of from 50 μm to 70 μm in the inorganic raw material.
First claim
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The invention claimed is: 1. A coating material for a honeycomb structure, the coating material containing: from 1% by mass to 10% by mass of first ceramic fibers having an average axial length of from 80 μm to 200 μm in an inorganic raw material; and from 0.1% by mass to 15% by mass of second ceramic fibers having an average axial length of from 50 μm to 70 μm in the inorganic raw material. 2. The coating material for the honeycomb structure according to claim 1 , wherein the first ceramic fibers have a sedimentation volume of from 1.8 mL/g to 5.0 mL/g, and the second ceramic fibers have a sedimentation volume of from 0.7 mL/g to 1.8 mL/g. 3. The coating material for the honeycomb structure according to claim 1 , wherein the first ceramic fibers have a long axis to short axis ratio (long axis/short axis) of from 12 to 50, and the second ceramic fibers have a long axis to short axis ratio (long axis/short axis) of from 7 to 18. 4. The coating material for the honeycomb structure according to claim 1 , further containing a colloidal oxide with a dispersed polymer. 5. The coating material for the honeycomb structure according to claim 4 , wherein the polymer is latex. 6. The coating material for the honeycomb structure according to claim 4 , wherein the colloidal oxide is colloidal silica. 7. The coating material for the honeycomb structure according to claim 1 , further containing from 0.1% by mass to 10% by mass of at least one selected from titanium oxide and aluminum nitride in the inorganic raw material. 8. An outer peripheral coating of a honeycomb structure, the outer periphery coating containing: from 1% by mass to 10% by mass of first ceramic fibers having an average axial length of from 80 μm to 200 μm in an inorganic raw material; and from 0.1% by mass to 15% by mass of second ceramic fibers having an average axial length of from 50 μm to 70 μm in the inorganic raw material. 9. The outer peripheral coating of the honeycomb structure according to claim 8 , wherein the first ceramic fibers have a long axis to short axis ratio (long axis/short axis) of from 12 to 50, and the second ceramic fibers have a long axis to short axis ratio (long axis/short axis) of from 7 to 18. 10. The outer peripheral coating of the honeycomb structure according to claim 8 , further containing from 0.1% by mass to 10% by mass of at least one selected from titanium oxide and aluminum nitride in the inorganic raw material. 11. The outer peripheral coating of the honeycomb structure according to claim 8 , wherein the outer peripheral coating has a thickness of from 0.05 mm to 4.0 mm. 12. A honeycomb structure with an outer peripheral coating, the honeycomb structure comprising the outer periphery coating of the honeycomb structure according to claim 8 .
Assignees
Inventors
Classifications
Honeycombs · CPC title
the outer peripheral sealing · CPC title
Thickness, height, width, length or diameter · CPC title
inorganic · CPC title
Ingredients characterised by their shape and organic or inorganic ingredients · CPC title
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- What does patent US11046859B2 cover?
- A coating material for a honeycomb structure, the coating material containing: from 1% by mass to 10% by mass of first ceramic fibers having an average axial length of from 80 μm to 200 μm in an inorganic raw material; and from 0.1% by mass to 15% by mass of second ceramic fibers having an average axial length of from 50 μm to 70 μm in the inorganic raw material.
- Who is the assignee on this patent?
- Ngk Insulators Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08K7/10. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 29 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).