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A kind of layered nanoparticle, exfoliation method and application

A layered nanometer and nanoparticle technology, applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of high cost of stripping methods and unsuitability for industrial mass production

Active Publication Date: 2019-01-18
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although there are some effective methods for stripping α-ZrP, such as the dissolution method and in-situ polymerization method, the cost of the stripping method is high and it is not suitable for industrial mass production.

Method used

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  • A kind of layered nanoparticle, exfoliation method and application
  • A kind of layered nanoparticle, exfoliation method and application
  • A kind of layered nanoparticle, exfoliation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The stripping method of layered α-zirconium phosphate of the present embodiment comprises the following steps:

[0063] (1') preparing layered α-zirconium phosphate;

[0064] (1'a) Weigh 4.0g ZrOCl 2 ·8H 2 O, and the preparation 40ml concentration is the phosphoric acid solution of 3mol / L; ZrOCl 2 ·8H 2 O and phosphoric acid were poured into the Teflon reactor together and stirred for 3min to obtain a reaction mixture;

[0065] (1'b) Put the Teflon reaction kettle into the oven to react at 200°C for 24h. After cooling down to room temperature naturally, wash it with deionized water for 3 times, then put the prepared precipitate into the oven and heat it at 75°C. Dry for 24 hours, and then grind the dried product to obtain layered α-zirconium phosphate powder.

[0066] (1) Amination treatment; Weigh 1.0g α-ZrP, pour it into 100g diglycolamine, and then mix it ultrasonically for 8 hours to obtain a mixed solution; use absolute ethanol to prepare the organic amine solut...

Embodiment 2

[0069] The stripping method of layered α-zirconium phosphate of the present embodiment comprises the following steps:

[0070] (1') preparing layered α-zirconium phosphate;

[0071] (1'a) Weigh 4.0g ZrOCl 2 ·8H 2 O, the preparation of 40ml concentration is 6mol / L phosphoric acid solution; ZrOCl 2 ·8H 2 O and phosphoric acid were poured into the Teflon reactor together and stirred for 3 minutes to obtain a reaction mixture;

[0072] (1'b) Put the Teflon reaction kettle into the oven and react at 200°C for 24 hours. After cooling to room temperature naturally, wash with deionized water for 3 times, then put the prepared precipitate into the oven and dry it at 75°C. Dry for 24 hours, and then grind the dried product to obtain layered α-zirconium phosphate powder.

[0073] (1) Amination treatment; Weigh 1.0g α-ZrP, pour it into 100g diglycolamine, and then mix it ultrasonically for 8 hours to obtain a mixed solution; use absolute ethanol to prepare the organic amine solution ...

Embodiment 3

[0076] The stripping method of layered α-zirconium phosphate of the present embodiment comprises the following steps:

[0077] (1') preparing layered α-zirconium phosphate;

[0078] (1'a) Weigh 4.0g ZrOCl 2 ·8H 2 O, the preparation 40ml concentration is 9mol / L phosphoric acid solution; ZrOCl 2 ·8H 2 O and phosphoric acid were poured into the Teflon reactor together and stirred for 3 minutes to obtain a reaction mixture;

[0079] (1'b) Put the Teflon reaction kettle into the oven and react at 200°C for 24 hours. After cooling to room temperature naturally, wash with deionized water for 3 times, then put the prepared precipitate into the oven and dry it at 75°C. Dry for 24 hours, and then grind the dried product to obtain layered α-zirconium phosphate powder.

[0080] (1) Amination treatment; weigh 1.0g α-ZrP, pour it into 100g diglycolamine, and then mix it ultrasonically for 8 hours to obtain a mixed solution; use absolute ethanol to centrifugally wash the organic amine s...

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Abstract

The invention relates to a method for stripping layered nanoparticles. The method comprises the following steps of: (1) performing intercalation treatment on the layered nanoparticles by adopting an intercalation agent, thereby obtaining intercalated nanoparticles; and (2) performing stripping treatment on the intercalated nanoparticles prepared in the step (1) by adopting a maleic anhydride graft, thereby obtaining the stripped layered nanoparticles. The stripping method comprises the following steps of: performing intercalation treatment on the layered nanoparticles by adopting the intercalation agent, and preparing the intercalated nanoparticles; and stripping the intercalated nanoparticles by adopting the maleic anhydride graft. Because the maleic anhydride graft has a polar group aldehyde group and olefin hydrophobic segments provided by maleic anhydride, and the anhydride group and the polar group (such as amido) are subjected to a generalized dehydration reaction so as to form chemical bonds under the high temperature and screw shear actions, so that incompatible polar and non-polar substances are subjected to chemical coupling. Therefore, the layered nanoparticles are stripped and dispersed, and a coupling compatibility effect is achieved.

Description

technical field [0001] The invention relates to a method for exfoliating layered alpha-zirconium phosphate, and also relates to an application of the exfoliated layered nanoparticles. Background technique [0002] Polymer nanocomposites refer to composite materials made by adding nanoparticles (at least one dimension below 100nm) to a polymer matrix. Compared with polymers, it has more excellent mechanical properties, heat, electricity, barrier properties, etc., so it is widely used in aerospace, automotive, food packaging, military and other fields. According to the number of dimensions below 100nm in nanoparticles, nanoparticles are divided into standard nanoparticles (all three dimensions below 100nm), nanotubes / whiskers (two-dimensional scale below 100nm) and nanosheets (one-dimensional scale below 100nm). 100nm), among which layered nanosheet polymer composites are the most widely used. [0003] α-zirconium phosphate (α-ZrP) is an inorganic cationic layered nanomateri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/37B82Y30/00B82Y40/00C08K9/08C08K9/02C08K3/32
CPCB82Y30/00B82Y40/00C01B25/372C01P2002/72C01P2004/20C01P2004/64C08K3/32C08K9/02C08K9/08C08K2003/328C08K2201/011
Inventor 孙大陟陈磊
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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