Low-surface-adhesion liquid metal and application of low-surface-adhesion liquid metal in thermometer

A technology of liquid metal and adhesion, which is applied to thermometers, thermometers based on the expansion/contraction of materials, instruments, etc., can solve the problems of reconfiguring shape, easy spreading of liquid metal, and enhanced adhesion of liquid metal surface, etc., to achieve The effect of low cost, good fluidity and low adhesion

Inactive Publication Date: 2016-09-28
深圳市大材液态金属科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a very big problem when liquid metal is directly applied to the manufacture of thermometers: when gallium-based liquid metal is in the process of preparing thermometers, various types of uneven oxides are easy to form on the surface of the liquid metal, which leads to enhanced adhesion on the surface of the liquid metal. It makes the liquid metal easy to spread on the surface of the thermometer during preparation and use, it is difficult to reconfigure the shape according to the demand, and it almost prevents the free flow of liquid metal in the thermometer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] 1. Preparation of liquid alloy

[0029] Firstly, five liquid alloys with different compositions are prepared, and the compositions and mass percentages are as follows:

[0030] ① Gallium 59.3%, Indium 24.8%, Tin 14.0%, Bismuth 1.9%

[0031] ② Gallium 64.3%, Indium 20.1%, Tin 13.4%, Bismuth 2.2%

[0032] ③ Gallium 61.3%, Indium 23.8%, Tin 13.2%, Bismuth 1.2%, Antimony 0.5%

[0033] ④ Gallium 62.4%, Indium 22.2%, Tin 12.4%, Bismuth 2.6%, Antimony 0.4%

[0034] ⑤ Gallium 68.0%, Indium 19.1%, Tin 10.0%, Bismuth 2.7%, Antimony 0.2%

[0035] The preparation process of liquid alloy is:

[0036] Step 1, the alloy raw material is selected from an alloy powder raw material with a purity greater than 99.9%, and the alloy raw material is weighed according to the formula;

[0037] Step 2: mix the alloy raw materials except gallium evenly in the preparation container, and pour metal gallium after heating over 200°C, and heat to 240°C until the raw materials are fully melted and ...

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Abstract

The invention discloses a liquid metal with low surface adhesion. The liquid metal is composed of an outermost water film, an intermediate oxide layer and an inner liquid alloy, wherein the thickness of the outermost water film is 1-12 μm. The present invention prepares a liquid metal with low surface adhesion on glass by attaching a layer of water film of a certain thickness to the surface of the liquid metal and selecting a suitable liquid metal formula, and also provides a method for applying the liquid metal Process for making thermometers from metals. The thermometer made of the liquid metal not only has excellent fluidity and can effectively indicate temperature, but also is environmentally friendly, non-toxic and harmless, and has low cost, and can effectively replace mercury thermometers.

Description

technical field [0001] The invention relates to a gallium-based liquid metal, in particular to a gallium-based liquid metal with extremely low surface adhesion and its application in a thermometer. Background technique [0002] In the process of diagnosing human diseases, mercury thermometers are most widely used because of their low price, convenient use, and accurate results. The use of mercury thermometers has a long history, its preparation technology is mature, and the measurement results are accurate and stable, which can be widely used in hospitals and homes. The main defect of mercury thermometers comes from its main temperature indicating material - mercury. Mercury is highly toxic and harmful to the human body. Scratching the human body or inhaling mercury can cause irreversible damage. [0003] At present, many new thermometer products have been gradually promoted and used, such as electronic thermometers. However, electronic thermometers have not been widely a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K5/02C22C28/00
CPCG01K5/025C22C28/00
Inventor 楚盛
Owner 深圳市大材液态金属科技有限公司
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