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Ultra-hydrophobic polystyrene thin film enhanced by nano silicon dioxide particles and preparation method thereof

A technology of nano-silica and polystyrene film, applied in the field of superhydrophobic polystyrene film, to achieve the effect of wide application and easy popularization and application

Inactive Publication Date: 2009-11-04
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fumed silica reinforced superhydrophobic polystyrene film with composite structure of porous microspheres and nanofibers has not been reported yet

Method used

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  • Ultra-hydrophobic polystyrene thin film enhanced by nano silicon dioxide particles and preparation method thereof
  • Ultra-hydrophobic polystyrene thin film enhanced by nano silicon dioxide particles and preparation method thereof
  • Ultra-hydrophobic polystyrene thin film enhanced by nano silicon dioxide particles and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1). Coupling modification of nano-silica

[0035] Add 3 g of nano-silica particles with a particle size of 10-50 nm into a mixed solution of 3 ml of γ-aminopropyltrimethoxysilane and 45 ml of petroleum ether, and react for 24 hours under magnetic stirring. After the reaction, dry naturally until the solvent is completely volatilized, and bake in an oven at 80° C. for 2 hours to obtain surface-coupling-modified nano-silica particles.

[0036] (2). Preparation of superhydrophobic polystyrene film

[0037] 0.025g modified SiO 2 The particles are placed in a solution of 0.5g polystyrene (weight average molecular weight: 200,000) and 9.5g N,N-dimethylformamide (DMF), and after being fully dispersed in an ultrasonic pool for tens of hours, they are passed through an electrospinning device Perform electrospinning to obtain a superhydrophobic polystyrene film reinforced by nano-silica particles with a composite structure of polystyrene / silica porous microspheres and nanofibe...

Embodiment 2

[0039] (1). Coupling modification of nano-silica

[0040] Add 3 g of nano-silica particles with a particle diameter of 20 nm into a mixed solution of 6 ml of methyltrimethoxysilane and 60 ml of octane, and react for 24 hours under magnetic stirring. After the reaction, dry naturally until the solvent is completely volatilized, and bake in an oven at 80° C. for 2 hours to obtain surface-coupling-modified nano-silica particles.

[0041] (2). Preparation of superhydrophobic polystyrene film

[0042] 0.025g modified SiO 2 The particles are placed in a solution of 0.375g polystyrene (weight average molecular weight: 300,000) and 5.6g N,N-dimethylformamide (DMF), and after being fully dispersed in an ultrasonic pool for tens of hours, they are passed through an electrospinning device Perform electrospinning to obtain a superhydrophobic polystyrene film reinforced by nano-silica particles with a composite structure of polystyrene / silica porous microspheres and nanofibers, wherein t...

Embodiment 3

[0044] (1). Coupling modification of nano-silica

[0045] Add 3 g of nano-silica particles with a particle size of 50 nm to a mixed solution of 3 ml of γ-aminopropyltrimethoxysilane, 6 ml of polydimethylsiloxane and 180 ml of petroleum ether, and react for 24 hours under magnetic stirring. After the reaction, dry naturally until the solvent is completely volatilized, and bake in an oven at 80° C. for 2 hours to obtain surface-coupling-modified nano-silica particles.

[0046] (2). Preparation of superhydrophobic polystyrene film

[0047] 0.025g modified SiO 2 The particles are placed in a solution of 0.75g polystyrene (weight average molecular weight: 350,000) and 7.5g tetrahydrofuran, and after being fully dispersed in an ultrasonic pool for tens of hours, electrospinning is carried out by electrospinning equipment to obtain polystyrene / dioxide A superhydrophobic polystyrene film reinforced by nano-silica particles with a composite structure of silicon porous microspheres and ...

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Abstract

The invention belongs to the technical field of application of inorganic nanomaterials, and in particular relates to uniformly dispersing nano-silica particles treated with a coupling agent in a polystyrene solution, and preparing composite structures of porous microspheres and nanofibers by electrospinning. Silica microparticle-reinforced superhydrophobic polystyrene film. First, use organosilane coupling agent to modify nano-silica particles, then blend the modified silica with polystyrene organic solution, and finally prepare silica-reinforced superhydrophobic polystyrene by electrospinning technology film. The film can be applied in the non-destructive transport of fluids, anti-fouling self-cleaning coatings, microfluidics, etc.

Description

technical field [0001] The invention belongs to the technical field of application of inorganic nanomaterials, and in particular relates to uniformly dispersing nano-silica particles treated with a coupling agent in a polystyrene solution, and preparing composite structures of porous microspheres and nanofibers by electrospinning. Silica microparticle-reinforced superhydrophobic polystyrene film. Background technique [0002] In recent years, the preparation of organic-inorganic nanocomposites has become a hot topic in the field of materials science and an important way to explore high-performance composite materials. Organic-inorganic nanocomposites have significantly different properties from traditional composite materials, enabling composite materials to obtain excellent stiffness, strength and thermal stability, and can improve the fracture performance, processability and dielectric properties of the polymer matrix. Due to the organic combination of the toughness, exce...

Claims

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Application Information

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IPC IPC(8): C08K9/06C08J5/18C08L25/06C08K3/36
Inventor 张辉江雷
Owner INST OF CHEM CHINESE ACAD OF SCI
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