Heat-insulating protective member for skid post and method for applying the heat-insulating protective member for skid post

Patent metadata

Field	Value
Publication number	US-2017314186-A1
Application number	US-201515526344-A
Country	US
Kind code	A1
Filing date	Nov 9, 2015
Priority date	Nov 14, 2014
Publication date	Nov 2, 2017
Grant date	—

Abstract

A heat-insulating protective member for skid posts contains a needled blanket of inorganic fibers. At least some of the needled blanket has, disposed therein, an impregnation part where an oxide-precursor-containing liquid is adherent in an undried state. The impregnation part has a water content of 50-400 parts by mass per 100 parts by mass of the inorganic fibers of the impregnation part. The water content of the heat-insulating protective member is 50-400 parts by mass per 100 parts by mass of the inorganic fibers of the heat-insulating protective member. The oxide-precursor-containing liquid contains ingredients that, upon burning, yield a composition containing Al 2 O 3 and CaO. The oxide-precursor-containing liquid is adherent in an amount of 2-50 parts by mass in terms of oxide amount per 100 parts by mass of the inorganic fibers of the impregnation part. A molar ratio of Al/Ca, in the whole impregnation part is 10-330.

First claim

1 . A heat-insulating protective member for a skid post, comprising:
a needled blanket including inorganic fibers, wherein at least a part of the needled blanket is an impregnated portion including an oxide-precursor-containing liquid that is undried, an amount of moisture included in the impregnated portion is 50 to 400 parts by mass relative to 100 parts by mass of the inorganic fibers included in the impregnated portion, an amount of moisture included in the heat-insulating protective member is 50 to 400 parts by mass relative to 100 parts by mass of the inorganic fibers included in the heat-insulating protective member, the oxide-precursor-containing liquid includes a component that forms an alumina-calcia composition when the oxide-precursor-containing liquid is fired and the alumina-calcia composition includes aluminum oxide and calcium oxide, an amount of the oxide-precursor-containing liquid deposited on the impregnated portion is 2 to 50 parts by mass relative to 100 parts by mass of the inorganic fibers included in the impregnated portion in terms of the amount of oxide, and a molar ratio of Al to Ca included in the impregnated portion is 10 or more and 330 or less.

2 . The heat-insulating protective member according to claim 1 , wherein a molar ratio of Al:Si:Ca in the impregnated portion (Al:Si:Ca) is 77.2 to 79.5:18.9 to 21.6:0.9 to 2.2.

3 . The heat-insulating protective member according to claim 1 , wherein the oxide-precursor-containing liquid is tinted, and the impregnated portion is tinted accordingly.

4 . The heat-insulating protective member according to claim 1 , wherein the impregnated portion continuously extends over a region that is at least half of a surface of the needled blanket and, in the region over which the impregnated portion extends, the impregnated portion extends over an entire thickness of the needled blanket including inorganic fibers.

5 . The heat-insulating protective member according to claim 1 , wherein the needled blanket includes an inorganic fiber formed article having a roll shape.

6 . A method for applying a heat-insulating protective member for a skid post, the method comprising:
covering the skid post with the heat-insulating protective member according to claim 1 and fixing the heat-insulating protective member to the skid post.

Assignees

• Mitsubishi Chem Corp

Inventors

• Hata Yusaku
• Suzuki Mitsuo
• Kobayashi Tomoyuki
• Yano Akihiro

Classifications

• F16L59/026

  Mattresses, mats, blankets or the like · CPC title

• D06M11/45

  Oxides or hydroxides of elements of Groups 3 or 13 of the Periodic Table; Aluminates · CPC title

• C04B2235/3208

  Calcium oxide or oxide-forming salts thereof, e.g. lime · CPC title

• C04B2235/5228

  Silica and alumina, including aluminosilicates, e.g. mullite · CPC title

• C04B2235/449

  Organic acids, e.g. EDTA, citrate, acetate, oxalate · CPC title