Sheet-type heat-resistant material and laminate

JP7878356B2Active Publication Date: 2026-06-23OJI HLDG CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
OJI HLDG CORP
Filing Date
2024-05-31
Publication Date
2026-06-23

AI Technical Summary

Benefits of technology

【0018】 本発明によれば、含水珪酸マグネシウムを所定の量で含む被膜を設けたので、耐熱性に優れ、気体(火炎や高温ガス)に対する遮蔽性も高い。特に、被膜が微細な細孔を有するため、細孔内に空気を封じ込めることができ、被膜を介した熱伝導の防止効果にも優れる。

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Abstract

To provide a sheet-like heat-resistant material having excellent heat resistance property and high gas shielding property; and to provide a laminate formed by laminating a plurality of such sheet-like heat-resistant materials.SOLUTION: A sheet-like heat-resistant material comprises: a sheet having inorganic fiber as a main component; and a coating film disposed on at least one surface side of the sheet, and containing 50 mass% or more of hydrated magnesium silicate. The coating film has pores with diameters of 20-200 nm on a surface thereof on at least a side opposite to the sheet. In addition, a laminate is formed by laminating a plurality of the sheet-like heat-resistant materials.SELECTED DRAWING: None
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Claims

1. A sheet mainly composed of inorganic fibers, A sheet-like heat-resistant material comprising a coating provided on at least one side of the sheet and containing 50% by mass or more of hydrated magnesium silicate, The air permeability of the aforementioned sheet-like heat-resistant material is 20 cc / cm². ２ / sec or less, The thickness of the aforementioned sheet-like heat-resistant material is 0.5 to 5 mm. A sheet-like heat-resistant material characterized in that the thickness of the coating is 30 to 500 μm.

2. The sheet-like heat-resistant material according to claim 1, wherein the hydrated magnesium silicate comprises at least one selected from the group consisting of sepiolite and atabulgite.

3. The sheet-like heat-resistant material according to claim 1 or 2, wherein the ratio of the mass of the hydrated magnesium silicate to the total mass of the sheet-like heat-resistant material is 50% by mass or less.

4. The sheet-like heat-resistant material according to any one of claims 1 to 3, wherein the fiber diameter of the inorganic fiber is 3 to 13 μm.

5. The basis weight of the aforementioned sheet-like heat-resistant material is 20 to 500 g / m². ２ The sheet-like heat-resistant material according to any one of claims 1 to 4.

6. A laminate characterized by being formed by laminating a plurality of sheet-like heat-resistant materials according to any one of claims 1 to 5.