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Subnanometer wire adhesive and its preparation method and use

A sub-nanometer, adhesive technology, applied in the direction of adhesives, inorganic adhesives, film/flake adhesives, etc. The effect of long sexual action time, high bond strength and stable performance

Active Publication Date: 2022-04-22
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the bonding performance of the adhesives used in people's daily life has reached a very high strength, it is generally irreversible, such as the pollution of the bonding surface is large, the adhesive cannot be recycled, etc.

Method used

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  • Subnanometer wire adhesive and its preparation method and use
  • Subnanometer wire adhesive and its preparation method and use
  • Subnanometer wire adhesive and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 1) Synthesis of bismuth phosphomolybdate subnanowires and obtaining adhesive

[0053] Weigh 0.8g of phosphomolybdic acid and 0.2g of bismuth nitrate into a 40mL reactor, add 16mL of deionized water, and stir for 10 minutes; then add 10mL of octadecene and 6mL of oleylamine, and stir for 10 minutes. Subsequently, the reaction vessel was sealed and placed in an oven at 180° C. for 8 hours and then naturally cooled to room temperature. Pour the product in the reaction kettle into a centrifuge tube, add n-octane and ethanol and centrifuge and wash three times to obtain bismuth phosphomolybdate sub-nanowires. The product obtained by centrifugation contains a small amount of n-octane and ethanol and is in a semi-solid state , which is bismuth phosphomolybdate subnanowire adhesive.

Embodiment 2

[0055] 1) Synthesis of calcium tungstate subnanowires and obtaining adhesives

[0056] Weigh 1g of phosphotungstic acid and 0.123g of calcium nitrate, add to a 40mL reaction kettle, add 16mL of deionized water, stir for 10 minutes; then add 6mL of oleylamine, and stir for 6 hours. Pour the product in the reaction kettle into a centrifuge tube, add n-octane and ethanol and centrifuge and wash it three times to obtain calcium tungstate sub-nanometer wires. The product obtained by centrifugation contains a small amount of n-octane and ethanol, and is in a semi-solid state, which is the calcium tungstate subnanowire adhesive.

Embodiment 3

[0058] 1) Synthesis of strontium tungstate sub-nanowires and obtaining adhesive

[0059] Weigh 1g of phosphotungstic acid and 0.14g of strontium nitrate, add them into a 40mL reaction kettle, add 16mL of deionized water, and stir for 10 minutes; then add 6mL of oleylamine, and stir for 6 hours. Pour the product in the reaction kettle into a centrifuge tube, add n-octane and ethanol and centrifuge and wash it three times to obtain strontium tungstate sub-nanowires. The product obtained by centrifugation contains a small amount of n-octane and ethanol, and is in a semi-solid state, which is the strontium tungstate sub-nanowire adhesive.

[0060] Evaluation of the performance of the subnanowire adhesive prepared in Examples 2 and 3:

[0061] General method: prepare substrates such as steel sheets, glass sheets or polyvinyl chloride sheets, apply the obtained adhesive evenly to stainless steel sheets, glass sheets or polyvinyl chloride sheets and other substrates with a small spo...

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PUM

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Abstract

The invention discloses a subnano wire adhesive, a preparation method and application thereof. The sub-nanometer wire adhesive can be used in a low-temperature environment or a water-containing environment, and includes: 0.8-1.2nm inorganic sub-nano wires and organic solvents, and does not contain other adhesive additives. The adhesive is non-toxic and non-corrosive, with high bonding strength and stable performance. It can be applied to various substrates and has a wide temperature range. It can not only show long-term stable bonding effect at low temperature and underwater environment, It can also be recycled, and the bonding performance will not be reduced or lost due to aging, and at the same time, it will not cause damage to the bonding surface of the substrate. It can be widely used in real life, especially for cold chain transportation and seawater operations. and other fields.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a subnanowire adhesive and its preparation method and application. Background technique [0002] Adhesive refers to a material that bonds the surfaces of homogeneous or heterogeneous objects together, and can usually be divided into inorganic adhesives and organic adhesives. Inorganic adhesives include cement, gypsum, etc., and organic adhesives mainly refer to polymer adhesives. Nowadays, the application of adhesives has penetrated into all aspects of people's life and engineering applications. With the continuous improvement of technology, the performance of adhesives is also gradually improved. Higher and higher requirements are put forward for different interfaces of different materials, operating temperature, and stability. Although the bonding properties of the adhesives used in people's daily life have reached very high strength, they are generally irreversible, for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J1/00C09J7/21C09J7/30G09F3/02
CPCC09J1/00C09J7/21C09J7/30G09F3/02C09J2203/334
Inventor 王训张思敏
Owner TSINGHUA UNIV
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