Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of normal temperature vacuum getter and preparation method thereof

A vacuum suction, room temperature technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve the problems of high chemical activity of metal cerium element, poor adsorption effect, flammable and explosive, etc., and achieve excellent absorption effect. , The effect of safe use and easy availability of raw materials

Active Publication Date: 2022-06-17
三河市华臻新材料有限公司
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Activated Zr and Ti-based alloy getter powders are flammable and explosive, and have certain safety hazards
[0011] Patent CN106732326A discloses a getter material and its preparation method and getter. The getter material is half-reduced cerium oxide and copper oxide to obtain a mixture of metal element and metal oxide, and then mixed with an adsorption promoter The obtained getter material has a high chemical activity of metal cerium as a simple substance, is flammable in air, and has certain potential safety hazards
In addition, the getter has a significant effect on the most dominant residual gas H in the VIP 2 The adsorption effect of O is poor
[0012] At present, for the adsorption of residual gas in the VIP board, there is no room temperature vacuum getter on the market that has no safety hazards, is environmentally friendly, harmless to the human body, has high suction performance, and is reasonably priced.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of normal temperature vacuum getter and preparation method thereof
  • A kind of normal temperature vacuum getter and preparation method thereof
  • A kind of normal temperature vacuum getter and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 used ultrafine silica as the internal powder.

[0037] Weigh 2 g of silica powder with a particle size of 2-5 microns and put it into a cylindrical copper alloy tube shell; wherein, the size of the copper alloy tube shell is 10 mm in diameter and 75 mm in height.

[0038] The opening of the copper alloy tube shell is extruded and closed, and then placed in an argon atmosphere furnace for heating and heating at a heating rate of 30°C / min, and the temperature is raised to 370°C for thermal insulation activation. The holding time is 2 hours. Then, the opening of the copper alloy tube shell is heated and sealed in the atmosphere furnace, the sealing temperature is 1020° C., and the holding time is 1 hour. With the furnace cooling to room temperature, the normal temperature vacuum getter of Example 1 was prepared, and the code was set as HZ-1.

Embodiment 2

[0040] Example 2 used ultrafine zeolite powder as the internal powder.

[0041] Weigh 2 g of zeolite powder with a particle size of 3-6 microns and put it into a cylindrical iron alloy tube shell; wherein the iron alloy tube shell has a diameter of 10 mm and a height of 70 mm.

[0042] The opening of the ferroalloy tube shell is extruded and closed, and then placed in a nitrogen atmosphere furnace for heating and heating at a heating rate of 30°C / min, and the temperature is raised to 400°C for thermal insulation and activation, and the holding time is 4 hours. Then, the opening of the ferroalloy tube shell is heated and sealed in the atmosphere furnace, the sealing temperature is 1450° C., and the holding time is 0.5 hours. With the furnace cooling to room temperature, the normal temperature vacuum getter of Example 2 was prepared, and the code name was set as HZ-2.

Embodiment 3

[0044] Example 3 used ultrafine montmorillonite powder as the internal powder.

[0045] Weigh 2g of montmorillonite powder with a particle size of 5-10 microns and put it into a cylindrical borosilicate glass tube shell; wherein the borosilicate glass tube shell has a diameter of 7mm and a height of 60mm. The opening of the high borosilicate glass tube shell is subjected to hot extrusion and closing treatment, and then placed in a nitrogen atmosphere furnace for heating and heating. Then, the opening of the high borosilicate glass tube shell is heated and sealed in the atmosphere furnace, the sealing temperature is 830° C., and the holding time is 0.5 hour. With the furnace cooled to room temperature, the normal temperature vacuum getter of Example 3 was prepared, and the code name was set as HZ-3.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
diameteraaaaaaaaaa
heightaaaaaaaaaa
Login to View More

Abstract

The invention discloses a normal temperature vacuum getter and a preparation method thereof, and relates to the technical field of getters. The normal temperature vacuum getter includes an outer airtight shell and an inner powder; the outer airtight The shell is one of glass shell and metal shell; the internal powder is one or more of silicon dioxide powder, aluminum oxide powder, zeolite powder, graphite powder, and montmorillonite powder. The room-temperature vacuum getter of the present invention can effectively avoid performance attenuation of the getter during the production and operation of VIP, does not need to be activated, has a good absorption effect on nitrogen, oxygen, water vapor, hydrogen and carbon dioxide, and is safe and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of getters, in particular to a normal temperature vacuum getter and a preparation method thereof. Background technique [0002] In the process of long-term service, vacuum components need a getter to maintain the vacuum degree. At present, traditional getters such as Zr-based, Ti-based and other alloy getters need to activate the getter material at high temperature (400°C-950°C) to realize the getter work. However, in many application scenarios, the high-temperature activation of alloy getters will cause irreversible thermal damage to vacuum components such as vacuum insulation panels, so the development of activation-free high-efficiency getters for use at room temperature has great application significance. [0003] Vacuum Insulation Panel (VIP for short) consists of core insulating material (insulating material, may be called core material), gas barrier film (barrier, may be called gas barrier layer) and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/02
CPCB01D53/02
Inventor 张红穆文文
Owner 三河市华臻新材料有限公司