JP2004011706A5

JP2004011706A5 -

Info

Publication number: JP2004011706A5
Application number: JP2002163955A
Authority: JP
Filing date: 2002-06-05
Publication date: 2004-11-11
Anticipated expiration: 2022-06-05

Description

【００１３】
【課題を解決するための手段】
本発明の真空断熱材は、シート状或いはマット状の無機繊維を積層した積層体の表面に、金属酸化物からなる水分吸着性物質の水溶液を塗布し、加熱圧縮成形して、前記水分吸着性物質により無機繊維相互を結着させたボード状芯材を、外被材で減圧密封してなるもので、水分吸着性物質が結合材として無機繊維と一体化しているため脱落することはなく、芯材自身が水分吸着性能を有することができる。[0013]
[Means for Solving the Problems]
In the vacuum heat insulating material of the present invention, an aqueous solution of a water-adsorptive substance consisting of metal oxide is coated on the surface of a laminated body in which sheet-like or mat-like inorganic fibers are laminated , heat compression molding is carried out, the board-like core material obtained by binding the inorganic fibers each other by material, those obtained by vacuum sealed enveloping member, not fall off because the moisture adsorbing material is integrated with the inorganic fibers as the bonding agent, The core material itself can have water adsorption performance.

【００１６】
また、水分吸着性物質が金属酸化物からなるものであるため、真空断熱材の芯材や外被材のアウトガスとして発生する水分、或いは真空断熱材の外部から透過侵入する水分は、水分吸着性物質として作用する金属酸化物と化学的に反応して除去される。よって、減圧封止時の内部圧力を低減すると共に、経時的にも内部圧力を維持することができ、高品質な真空断熱材が得られる。[0016]
In addition, since the moisture adsorptive substance is a metal oxide, the moisture produced as the outgassing of the core material of the vacuum heat insulating material and the outer covering material, or the moisture which permeates and penetrates from the outside of the vacuum heat insulating material has moisture absorbability. It is removed chemically by reacting with the metal oxide acting as a substance. Therefore, while reducing the internal pressure at the time of pressure reduction sealing, the internal pressure can be maintained also sequentially, and a high quality vacuum heat insulating material can be obtained.

【００２３】
本発明の真空断熱材は、シート状或いはマット状の無機繊維を積層した積層体の表面に、金属酸化物からなる水分吸着性物質の水溶液を塗布し、加熱圧縮成形して、前記水分吸着性物質により無機繊維相互を結着させたボード状芯材を、外被材で減圧密封してなる。[0023]
In the vacuum heat insulating material of the present invention , an aqueous solution of a water-adsorptive substance consisting of metal oxide is coated on the surface of a laminated body in which sheet-like or mat-like inorganic fibers are laminated , heat compression molding is carried out, A board-like core material in which inorganic fibers are bound to each other by a substance is sealed under reduced pressure with a covering material .

Claims

An aqueous solution of a water-absorbing material consisting of metal oxides is applied to the surface of a laminate of laminated sheet-like or mat-like inorganic fibers , heat compression molded, and binding of the inorganic fibers to each other by the water-absorbing material. Vacuum insulation material which is made by pressure-sealing the board-like core material which has been made with a sheath material.

Vacuum heat insulator of claim 1, wherein the inorganic fibers are borosilicate glass.

The vacuum heat insulating material according to claim 1 or 2 , wherein the concentration of the water adsorbing substance present in the surface layer of the core material is larger than that of the inner layer.

An outer case, an inner case, and a vacuum heat insulating material disposed in a space formed by the outer case and the inner case, the vacuum heat insulating material being any one of claims 1 to 3 The apparatus using the vacuum heat insulating material characterized by being a thing of a statement.