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Preparation method for polymer/inorganic nano composite material

A composite material, inorganic nanotechnology, applied in the field of composite material preparation, can solve problems such as affecting the performance of composite materials and poor dispersion.

Active Publication Date: 2012-07-04
上海上惠纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the composite material obtained by this method, the inorganic particles have a high surface energy before adding, and the agglomeration is serious, which leads to poor dispersion in the polymer and affects the performance of the composite material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A composite material with nano-fluorine-doped tin oxide as the inorganic component and polymethyl methacrylate as the organic matrix, the preparation process is as follows:

[0022] a. Add 5% of γ-methacryloxypropyltrimethoxysilane to the nano-fluorine-doped tin oxide sol with excellent stability and ethanol as the solvent, and then undergo ultrasonic 30min followed by reflux treatment. The modified nano-fluorine-doped tin oxide sol was obtained in 240 minutes.

[0023] b. The modified nano-fluorine-doped tin oxide sol is dissolved in methyl methacrylate monomer, and the amount of nano-fluorine-doped tin oxide accounts for 5% by mass of methyl methacrylate monomer. The original solvent of the nano-fluorine-doped tin oxide sol is removed through a rotary evaporation process to obtain a solution using methyl methacrylate as the solvent.

[0024] c. Add azobisisobutyronitrile as an initiator to the above solution under nitrogen protection at 80 o C reflux reaction for 30 minutes...

Embodiment 2

[0026] The composite material with nano antimony doped tin oxide as the inorganic component and polymethyl methacrylate as the organic matrix, the preparation process is as follows:

[0027] a. Add 0.1% of γ-methacryloxypropyltrimethoxysilane to the nano-antimony-doped tin oxide sol with excellent stability and methanol as the solvent, and then undergo ultrasonic for 1min and then reflux treatment. The modified nano antimony doped tin oxide sol was obtained in 720 minutes.

[0028] b. The modified nano antimony doped tin oxide sol is dissolved in methyl methacrylate monomer, and the amount of nano antimony doped tin oxide accounts for 0.1% of the mass percentage of methyl methacrylate monomer. The original solvent of the nano antimony doped tin oxide sol is removed through the atmospheric distillation process to obtain a solution with methyl methacrylate as the solvent.

[0029] c. Add azobisisobutyronitrile as an initiator to the above solution under nitrogen protection at 70 o C r...

Embodiment 3

[0031] The nano-fluorine and antimony co-doped tin oxide is used as the inorganic component and polymethyl methacrylate is used as the organic matrix composite material. The preparation process is as follows:

[0032] a. Add 20% of γ-methacryloxypropyltrimethoxysilane to the nanometer fluorine and antimony co-doped tin oxide sol with excellent stability of acetone as the solvent, and then go through ultrasound for 720min. And reflow treatment for 30 minutes to obtain a modified nano-fluorine and antimony co-doped tin oxide sol.

[0033] b. The modified nano-fluorine and antimony co-doped tin oxide sol is dissolved in methyl methacrylate monomer. The amount of nano-fluorine and antimony co-doped tin oxide accounts for 100% of the mass of methyl methacrylate monomer. The component content is 40%, and the original solvent of the nano-fluorine and antimony co-doped tin oxide sol is removed through the vacuum distillation process to obtain a solution with methyl methacrylate as the solv...

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Abstract

The invention discloses a preparation method for a polymer / inorganic nano composite material. The inorganic component of the composite material is nano doped tin oxide sol, the surface of the inorganic component is modified by using gamma-methacryloxypropyltriethoxysilane, and unsaturated double bonds are introduced to the surfaces of inorganic particles and are used as active points of surface polymerization grafting. The modified inorganic component is dissolved in methyl methacrylate monomers through solvent replacement, initiator is added under a certain condition to induce monomers to bepolymerized, and then the polymer / inorganic nano composite material is obtained after thermosetting. According to the method, inorganic sol with high stability is used, and the defect that the inorganic component is easy to agglomerate, and the defect of low dispersibility in a polymer in the conventional preparation process of the polymer / inorganic nano composite material are overcome. The composite material can be used as an energy-saving window material for automobiles, airplanes, buildings and the like.

Description

technical field [0001] The invention relates to a method for preparing a polymer / inorganic composite material by using an inorganic sol, and belongs to the technical field of composite material preparation. Background technique [0002] Nanocomposite material is a new type of material developed in recent years, and is known as one of "the most promising materials in the 21st century". Due to the characteristics of small size effect, large specific surface area and strong interfacial interaction, nanoparticles can significantly improve the mechanical properties of the polymer after being added to the polymer matrix, and also present unique properties in terms of light, electricity, magnetism, sound and catalysis. performance. Therefore, polymer / inorganic nanoparticle composites have become a research hotspot in recent years. [0003] However, due to the small particle size (1-100nm) and large surface energy of inorganic nanoparticles, they are in a thermodynamically unstabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F292/00C08F220/14
Inventor 施利毅袁帅周才龙王竹仪赵尹方建慧
Owner 上海上惠纳米科技有限公司
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