Core material for vacuum insulation panel including porous aluminosilicate, and vacuum insulation panel provided with the same

Patent metadata

Field	Value
Publication number	US-10226751-B2
Application number	US-201515514318-A
Country	US
Kind code	B2
Filing date	Oct 15, 2015
Priority date	Oct 20, 2014
Publication date	Mar 12, 2019
Grant date	Mar 12, 2019

Abstract

Provided are a core material for a vacuum insulation panel including porous aluminosilicate, and a vacuum insulation panel provided with the same. The core material for the vacuum insulation panel according to the present disclosure has superior long-term durability and improved gas adsorption ability (particularly, superior water absorption ability) while requiring a low raw material cost. The vacuum insulation panel including the core material may exhibit more improved insulation performance by minimizing a reduction in the vacuum degree without an additional getter or absorbent.

First claim

The invention claimed is:

1. A core material for a vacuum insulation panel, comprising porous aluminosilicate having an argon adsorption Brunauer-Emmett-Teller (BET) surface area of 300 m 2 /g or more and an external specific surface area (ESA) of 150 m 2 /g or more,
wherein the porous aluminosilicate has pores satisfying the following Equation 1:
V meso /V micro >3.0  [Equation 1]

wherein V meso represents a Barrett-Joyner-Halenda (BJH) cumulative volume of a mesopore having a pore size of 2 nm to 300 nm, and
V micro represents a volume of a micropore having a pore size of less than 2 nm, as calculated from argon adsorption Brunauer-Emmett-Teller (BET) surface area by the t-plot method.

2. The core material for the vacuum insulation panel of claim 1 , wherein the porous aluminosilicate has a Barrett-Joyner-Halenda (BJH) desorption average pore width of 5 nm to 15 nm.

3. The core material for the vacuum insulation panel of claim 1 , wherein the porous aluminosilicate has a water absorption rate of 18% by weight or more, 22% by weight, or more, and 25% by weight or more, when humidified at a relative humidity of 80%, 90%, and 95% , respectively, under an isothermal condition of 25° C.

4. A vacuum insulation panel, comprising:
the core material of claim 1 ; and
an outer shell material sealing and covering the core material.

Assignees

• Lg Chemical Ltd

Inventors

• Jung Sang Yun
• Park Cheol-Hee
• Jun Shin Hee
• Byun Won Bae

Classifications

• B01J20/16 Primary

  Alumino-silicates (B01J20/12 takes precedence) · CPC title

• B32B15/088

  comprising polyamides · CPC title

• C01P2006/12

  Surface area · CPC title

• B01J20/28092

  Bimodal, polymodal, different types of pores or different pore size distributions in different parts of the sorbent · CPC title

• F16L59/04 Primary

  Arrangements using dry fillers, e.g. using slag wool · CPC title