JP-7857329-B2 - Composite getter material, getter paste

Inventors

• 阿部 裕之
• 瓜生 英一
• 長谷川 和也
• 石橋 将
• 野中 正貴
• 清水 丈司
• 石川 治彦

Assignees

• パナソニックハウジングソリューションズ株式会社

Dates

Publication Date

20260512

Application Date

20240219

Priority Date

20190617

Claims (2)

1. A composite getter material containing at least particles made of zeolite and particles made of a cerium compound, The zeolite is a copper ion-exchanged ZSM-5 type zeolite. The cerium compound is cerium oxide, The particles made of the zeolite and the particles made of the cerium compound are not supported on each other. The proportion of the cerium compound is 50% by mass or less relative to the mass of the composite getter material. The particles made of the cerium compound have an average particle diameter of 10 nm or more and 30 μm or less. The particles made of the zeolite have an average particle diameter of 10 nm to 30 μm . Composite getter material.
2. A mixture of the composite getter material and solvent described in claim 1, Getta paste.

Description

This disclosure relates to composite getter materials and getter pastes. Patent Document 1 discloses a method for manufacturing a glass panel unit. In this method, a glass composite comprising a first substrate, a second substrate, a gas adsorbent, and a glass adhesive containing glass powder and a binder is heated to remove the binder. A resin is used as the binder in this method. International Publication No. 2017/056416 Figure 1A is a plan view showing an assembly that is an intermediate part of the glass panel unit according to the first embodiment. Figure 1B is a cross-sectional view taken along line A-A in Figure 1A.Figure 2 is a plan view showing the same glass panel unit.Figure 3 is an explanatory diagram of the manufacturing method of the glass panel unit according to the first embodiment.Figure 4 is an explanatory diagram of the manufacturing method of the glass panel unit according to the first embodiment.Figure 5 is an explanatory diagram of the manufacturing method of the glass panel unit according to the first embodiment.Figure 6 is an explanatory diagram of a method for manufacturing a glass panel unit according to the first embodiment.Figure 7 is an explanatory diagram of the manufacturing method of the glass panel unit according to the first embodiment.Figure 8 is an explanatory diagram of the manufacturing method of the glass panel unit according to the first embodiment.Figure 9A is a plan view showing a glass panel unit according to the second embodiment. Figure 9B is a cross-sectional view taken along line B-B in Figure 9A.Figure 10 is an explanatory diagram of a method for manufacturing a glass panel unit according to the second embodiment.Figure 11 is a plan view showing an assembly that is an intermediate part of the glass panel unit according to the second embodiment.Figure 12 is an explanatory diagram of a method for manufacturing a glass panel unit according to the second embodiment.Figure 13 is an explanatory diagram of a method for manufacturing a glass panel unit according to the second embodiment.Figure 14 is an explanatory diagram of a method for manufacturing a glass panel unit according to the second embodiment.Figure 15A is an explanatory diagram showing an assembly that is an intermediate part of the glass panel unit according to the third embodiment. Figure 15B is an explanatory diagram showing an assembly that is an intermediate part of the glass panel unit according to the third embodiment.Figure 16 is an explanatory diagram of the manufacturing method of the glass panel unit according to the fourth embodiment.Figure 17 is a graph showing the relationship between the intensity (detection intensity) corresponding to the amount of oxygen desorbed from cerium(IV) oxide powder when the powder is heated, and temperature.Figure 18A is a plot showing the relationship between the amount of cerium(IV) oxide added to a composite getter material using copper ion exchange zeolite powder and the thermal conductance of the glass panel unit. Figure 18B is a plot showing the relationship between the amount of cerium(IV) oxide added to a composite getter material using hydrogen ion exchange zeolite powder and the thermal conductance of the glass panel unit.Figure 19 is a plot showing the relationship between the concentration of cerium(IV) oxide in the composite getter material and the thermal conductance of the glass panel unit.Figure 20 is a graph showing the relationship between the amount of oxygen released from cerium(IV) oxide when cerium(IV) oxide powder is heated and the temperature.Figure 21 is a plot showing the relationship between the amount of cerium(IV) oxide in the getter material and the thermal conductance of the glass panel unit. First, I will explain the circumstances that led to this disclosure. Glass panel units provide thermal insulation by forming a vacuum space between two glass plates. However, even with a vacuum space between the two glass plates, the thermal insulation of such glass panel units can be reduced by residual gas in this vacuum space. Therefore, to reduce the amount of gas remaining in the vacuum space, a gas adsorbent is provided within the vacuum space (see Patent Document 1). However, gas adsorbents often contain only one type of gas-adsorbing component. When using such a gas adsorbent, gases that are not adsorbed by the gas-adsorbing component may remain as residual gas in the vacuum space. Furthermore, simply combining two or more gas adsorption components was considered insufficient to suppress gas residue in the low-pressure environment of a vacuum. In other words, selecting two or more gas adsorption components suitable for gas adsorption in a vacuum was considered difficult. Therefore, the inventors, through diligent research, discovered that various gaseous components such as water vapor, carbon dioxide, oxygen, nitrogen, and methane exist in a vacuum space, with water vapor and carbon dioxide accounting for the largest proportions. On th