US2019177911A1PendingUtilityA1

Heat insulator

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Assignee: PANASONIC IP MAN CO LTDPriority: Dec 8, 2017Filed: Nov 21, 2018Published: Jun 13, 2019
Est. expiryDec 8, 2037(~11.3 yrs left)· nominal 20-yr term from priority
Inventors:Hirohisa HinoTaichi NakamuraKazuma OikawaShigeaki Sakatani
F16L 59/06D06N 2209/065D06M 11/79D06N 3/12D06M 15/55D06M 2400/02D06N 3/0059D06N 3/0011D06M 15/507F16L 59/00B32B 2255/02B32B 2307/102B32B 2307/302B32B 3/04B32B 2307/304B32B 2262/101B32B 2571/00B32B 2307/73B32B 2260/046B32B 2255/26B32B 2260/021B32B 2457/04B32B 2307/3065B32B 5/20B32B 5/245B32B 2307/732B32B 2262/0246B32B 2266/126B32B 5/022
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Claims

Abstract

A heat insulator is provided that has a coating structure preventing separation of silica aerogel in a composite sheet. The heat insulator includes: a composite layer having silica aerogel enclosed in a nonwoven fabric; and a coating film containing a hydrophilic resin and a lipophilic resin and coating a surface of the composite layer. The nonwoven fabric resides in the coating film. In the coating film, the heat insulator includes the lipophilic resin which is present in the hydrophilic resin in the form of a plurality of islands.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A heat insulator comprising:
 a composite layer having silica aerogel enclosed in a nonwoven fabric; and   a coating film containing a hydrophilic resin and a lipophilic resin and coating a surface of the composite layer.   
     
     
         2 . The heat insulator according to  claim 1 , wherein the nonwoven fabric resides in the coating film. 
     
     
         3 . The heat insulator according to  claim 1 , wherein the lipophilic resin is present in the hydrophilic resin in the form of a plurality of islands. 
     
     
         4 . The heat insulator according to  claim 3 , wherein the nonwoven fabric is lipophilic, and resides on the lipophilic resin present in the form of islands. 
     
     
         5 . The heat insulator according to  claim 1 , wherein the hydrophilic resin is a hydrophilic coating material-base resin. 
     
     
         6 . The heat insulator according to  claim 1 , wherein the lipophilic resin is a thermosetting resin. 
     
     
         7 . The heat insulator according to  claim 1 , wherein the hydrophilic resin is a hydrophilic polyester resin, and the lipophilic resin is an epoxy resin. 
     
     
         8 . The heat insulator according to  claim 1 , wherein the coating film has a thickness of 1 to 100 μm. 
     
     
         9 . The heat insulator according to  claim 3 , wherein the plurality of islands each have a diameter of 0.1 to 50 μm. 
     
     
         10 . The heat insulator according to  claim 1 , wherein the lipophilic resin is 5 to 50 weight % of the coating film.

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