Organic surface modification halloysite nano-tube and method for making same

A technology for organicizing halloysite and halloysite nanotubes, applied in chemical instruments and methods, inorganic chemistry, silicon compounds, etc. problem, to achieve the effect of easy product, fast reaction rate and product separation

Inactive Publication Date: 2008-10-15
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When halloysite nanotubes and polymers are combined, due to the large difference in polarity, they are not easily dispersed in the polym

Method used

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  • Organic surface modification halloysite nano-tube and method for making same
  • Organic surface modification halloysite nano-tube and method for making same
  • Organic surface modification halloysite nano-tube and method for making same

Examples

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Comparison scheme
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Example Embodiment

[0028] Example 1:

[0029] First, the halloysite nanotube raw materials are crushed and ground, and then sieved with a 250-mesh sieve to obtain halloysite nanotube powder. Weigh 2 grams of halloysite nanotube powder and dry it in a vacuum at 80°C for 12 hours, then disperse it in 50 grams of acetone, and ultrasonically disperse it for 1 hour at a power of 1000W. Add 5 grams of toluene-2,4-diisocyanate and two drops of dibutyltin dilaurate to the obtained suspension, and react under ultrasonic irradiation at a temperature of 60° C. and a power of 1000 W for 2 hours. After the system is cooled, it is filtered and washed 3 times with 60ml of acetone. The obtained pink powder is vacuum dried at 50°C for 12 hours, and then packaged and dried for storage.

Example Embodiment

[0030] Example 2:

[0031] First, the halloysite nanotube raw materials are crushed and ground, and then sieved with a 250-mesh sieve to obtain halloysite nanotube powder. Weigh 1 gram of halloysite nanotube powder and dry it in a vacuum at 80° C. for 12 hours, then disperse it in 30 grams of acetone, and ultrasonically disperse it for 1 hour at a power of 1000 W. 0.5 g of hexamethylene diisocyanate and two drops of dibutyl tin dilaurate were added to the obtained suspension, and the reaction was carried out by ultrasonic irradiation at a temperature of 70° C. and a power of 1000 W for 3 hours. After the system is cooled, it is filtered and washed 3 times with 60ml of acetone. The obtained pink powder is vacuum dried at 50°C for 12 hours, and then packaged and dried for storage.

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Abstract

The invention relates to a surface functional organified nerchinskite nanotube and a preparation method thereof. The method takes the nerchinskite nanotube as the raw material, and obtains the nerchinskite nanotube with-NCO radicals key-jointed on the surface by certain physical and chemical methods. The preparation method comprises the steps of refining the nerchinskite nanotute; vacuum drying and ultrasonic dispersing the nerchinskite nanotube into acetone; adding a certain amount of vulcabond and dibutyl tin laurate; subjecting the nerchinskite nanotube to ultrasonic irradiation reaction for 1 to 5 hours; filtering, washing, vacuum drying to obtain the function-organized nerchinskite nanotube with the-NCO radicals on the surface. The function-organized nerchinskite nanotube has the -NCO radicals on the surface and good reactivity, thereby providing diverse options for preparing polymer base nanocomposites.

Description

technical field [0001] The invention relates to the technical field of surface modification of inorganic nanoparticles, in particular to halloysite nanotubes with organic surface functions and a preparation method thereof. Background technique [0002] Halloysite nanotubes are a natural tubular clay mineral with a multi-walled nanotube structure. Polymer-based nanocomposite articles based on halloysite nanotubes exhibit excellent mechanical properties, flame retardancy, and thermal stability. Its unique properties have aroused extensive research interest. Halloysite nanotubes are rich in reserves in my country, with wide sources and low cost. However, there are many hydroxyl groups on the surface of halloysite nanotubes, which make halloysite nanotubes more polar and extremely hydrophilic. When halloysite nanotubes and polymers are combined, due to the large difference in polarity, they are not easily dispersed in the polymer, so the compatibility of the organic and inorga...

Claims

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Application Information

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IPC IPC(8): C01B33/40
Inventor 王云普王喜平张守村李红坤申永前
Owner NORTHWEST NORMAL UNIVERSITY
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