Method for preparing macromolecular nano composite membrane enriching inorganic filler on surface

An inorganic filler and nanocomposite technology, which is applied in the field of preparing polymer nanocomposite membranes enriched with inorganic fillers on the surface, can solve undiscovered problems and achieve the effect of promoting volatilization and improving film formation efficiency

Active Publication Date: 2014-04-30
NINGBO UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no method has been found for the one-step preparation of surface-enriched inorganic fillers in the phase inversion wet film-forming process.

Method used

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  • Method for preparing macromolecular nano composite membrane enriching inorganic filler on surface
  • Method for preparing macromolecular nano composite membrane enriching inorganic filler on surface
  • Method for preparing macromolecular nano composite membrane enriching inorganic filler on surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 0.5 g of nylon 6 with a molecular weight of 10,000 g / mol was dissolved in 10 ml of formic acid, and then 0.1 g of polysilsesquioxane was added to obtain a film-forming mother liquor. Place 5ml of the film-forming mother solution on the conductive film-forming plate, place the film-forming plate in the parallel plate electric field, and apply an electric field on both sides of the watch glass, wherein the conductive film-forming upper plate is negatively charged, the conductive film-forming plate is grounded, and the DC voltage field Strong is 1000V. The schematic diagram of the film forming device is as follows image 3 shown. At room temperature, the film-forming liquid was completely phase-separated for 40 min under the action of an electric field, and an organic-inorganic composite film was obtained. The energy spectrum analysis of the composite material shows that the surface Si content is 0.54wt%, and the Si element distribution diagram is as follows Figure 4 s...

Embodiment 2

[0035] 0.5 g of nylon 6 with a molecular weight of 10,000 g / mol was dissolved in 10 ml of formic acid, followed by the addition of NaYF 4 0.1 g to obtain a film-forming mother liquor. Put 5ml of the film-forming mother solution on the conductive film-forming plate, place the film-forming plate in the parallel plate electric field, and apply an electric field on both sides of the watch glass, wherein the conductive film-forming upper plate is negatively charged, the conductive film-forming plate is grounded, and the DC voltage field The strength is 2000V. The schematic diagram of the film forming device is as follows image 3 shown. At room temperature, the film-forming liquid was completely phase-separated for 40 min under the action of an electric field, and an organic-inorganic composite film was obtained. The energy spectrum analysis of the composite material shows that the surface Na content is 0.39wt%, and the Na element distribution is as follows Figure 8 shown. N...

Embodiment 3

[0037] 0.5 g of nylon 6 with a molecular weight of 10,000 g / mol was dissolved in 10 ml of formic acid, and then 0.1 g of polysilsesquioxane was added to obtain a film-forming mother liquor. Place 5ml of the film-forming mother solution on a conductive film-forming plate, place the film-forming plate in a parallel plate electric field, and apply an electric field on both sides of the watch glass, wherein the upper plate is negatively charged, the lower plate is grounded, and the DC voltage field strength is 4000V. The schematic diagram of the film forming device is as follows image 3 shown. At room temperature, the film-forming liquid was completely phase-separated for 40 min under the action of an electric field, and an organic-inorganic composite film was obtained. The composite material was analyzed by energy spectrum, and the surface Si content was 0.44wt%.

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Abstract

The invention discloses a method for preparing a macromolecular nano composite membrane enriching inorganic filler on the surface, which is characterized by specifically comprising the following steps: (1) dissolving macromolecules and inorganic filler forming a membrane through phase inversion into a solvent to obtain mother liquid; (2) placing the mother liquid on a conductive membrane forming panel; (3) applying an electrostatic field vertical to the conductive membrane forming panel to the conductive membrane forming panel, wherein the electrostatic field promotes phase inversion of the mother liquid to obtain the macromolecular nano composite membrane enriching inorganic filler on the surface. After the inorganic filler is enriched on the surface, more properties of the macromolecular material can be obtained, and the method is particularly suitable for preparing materials with surface wear resistance, acid-alkali resistance, fire resistance, luminescence and the like.

Description

technical field [0001] The invention relates to a method for preparing a surface wear-resistant, acid and alkali resistant, fire-resistant, luminous and other materials, in particular to a method for preparing a polymer nanocomposite film whose surface is enriched with inorganic fillers. Background technique [0002] Material surface structure design and performance regulation have always been the research hotspot and difficulty of high-performance polymer materials. The formation of an inorganic layer on the surface of the polymer material can make the surface of the material exhibit the characteristics of inorganic materials, making up for the lack of wear resistance, corrosion resistance and heat resistance of the polymer material. In addition, it can also endow the surface of the polymer material with certain properties. Some special properties, such as photocatalysis and electrical conductivity, etc. Patent US8012578 discloses a method for preparing composites of therm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18
Inventor 周琦
Owner NINGBO UNIVERSITY OF TECHNOLOGY
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