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Method for preparing nanometer zinc oxide composite material from super concentrated emulsion

A technology of nano-zinc oxide and super-concentrated emulsion is applied in the field of preparing nano-zinc oxide composite materials from super-concentrated emulsion, which can solve the problems of poor compatibility, easy agglomeration of particles, hindering application fields and prospects, etc. The effect of high coverage and convenient operation

Inactive Publication Date: 2014-07-30
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many deficiencies in the use of nanomaterials, such as the easy aggregation of particles, poor compatibility with organic materials when added to materials, etc., which hinder its application fields and prospects.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1 : The process and steps of this example are as follows:

[0015] (1) Place 5g of zinc oxide and 25g of n-butyl oleate in a conical flask and seal it, and stir for 30 minutes at room temperature at a speed of 500r / min. Wash the impregnated zinc oxide with ethanol for 2-3 times, and then dry it in a vacuum oven at 70°C to constant weight.

[0016] (2) Measure 4g and 0.4g of deionized water and sodium dodecylsulfonate respectively, put them into a Erlenmeyer flask and seal them, and stir for 20 minutes to dissolve at room temperature at a speed of 500r / min. Add 16g of styrene, 0.9g of treated zinc oxide, 1.6g of triallyl isocyanurate, and 0.16g of azobisisobutyronitrile into the Erlenmeyer flask and seal it, and ultrasonically disperse it in an ultrasonic instrument for 20 minutes . Slowly add this solution to the above water phase solution, under 500r / min magnetic stirring, the time lasts for about 15-20 minutes. After all the dropwise addition is completed,...

Embodiment 2

[0017] Example 2 : The process and steps of this example are as follows:

[0018] (1) Place 5g of zinc oxide and 25g of n-butyl oleate in a conical flask and seal it, and stir for 30 minutes at room temperature at a speed of 500r / min. Wash the impregnated zinc oxide with ethanol for 2-3 times, and then dry it in a vacuum oven at 70°C to constant weight.

[0019] (2) Measure 4g and 0.4g of deionized water and sodium dodecylsulfonate respectively, put them into a Erlenmeyer flask and seal them, and stir for 20 minutes to dissolve at room temperature at a speed of 500r / min. Add 16g of styrene, 1.6g of treated zinc oxide, 1.6g of triallyl isocyanurate, and 0.16g of azobisisobutyronitrile into the Erlenmeyer flask and seal it, and ultrasonically disperse it in an ultrasonic instrument for 20 minutes . Slowly add this solution to the above water phase solution, under 500r / min magnetic stirring, the time lasts for about 15-20 minutes. After all the dropwise addition is completed...

Embodiment 3

[0020] Example 3 : The process and steps of this example are as follows:

[0021] (1) Place 5g of zinc oxide and 25g of n-butyl oleate in a conical flask and seal it, and stir for 30min at room temperature at a speed of 500r / min. Wash the impregnated zinc oxide with ethanol for 2-3 times, and then dry it in a vacuum oven at 70°C to constant weight.

[0022] (2) Measure 4g and 0.4g of deionized water and sodium dodecylsulfonate respectively, put them into a Erlenmeyer flask and seal them, and stir for 20 minutes to dissolve at room temperature at a speed of 500r / min. Add 16g of styrene, 1.6g of treated zinc oxide, 1.6g of triallyl isocyanurate, and 0.1g of azobisisobutyronitrile into a sealed conical flask, and ultrasonically disperse in an ultrasonic instrument for 20 minutes . Slowly add this solution to the above water phase solution, under 500r / min magnetic stirring, the time lasts for about 15-20 minutes. After all the dropwise addition is completed, continue to stir ...

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PUM

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Abstract

The invention relates to a method for preparing a nano-zinc oxide composite material by using an ultra-concentrated emulsion. Firstly, the zinc oxide is dipped in n-butyl oleate for surface modification, and the excess n-butyl oleate is washed out by ethanol several times. Then, the modified zinc oxide, styrene, and triallyl isocyanurate are used as the oil phase, and azobisisobutyronitrile is used as the initiator. Add it dropwise to the water phase of deionized water and sodium dodecylsulfonate at room temperature, and under the protection of nitrogen, obtain a jelly-like super-concentrated emulsion. Then transfer to a centrifuge test tube, centrifuge for 1-2 minutes, remove the upper layer of air bubbles; then pass through nitrogen, seal it with a rubber stopper, and place it in water at 60°C for 24 hours of polymerization reaction. ZnO nanocomposites with different mass fractions were successfully prepared by ultra-concentrated emulsion. The solid UV test results show that as the amount of zinc oxide increases, the UV absorption is better, and the visible light transmission is very good, so the material has good UV resistance and weather resistance when used in packaging, optical materials, plastics, etc.

Description

technical field [0001] The invention relates to a method for preparing a nano-zinc oxide composite material from an ultra-concentrated emulsion, which belongs to the technical field of preparing functional polymer materials. Background technique [0002] Zinc oxide has a wide range of uses, not only in petrochemical, coating, and rubber industries, but also in magnetic materials, gas sensors, piezoelectric materials, high-efficiency catalysts, varistors, and plastic materials. Nano-zinc oxide refers to the particle size range between 1-100nm, it has small size, surface effect, macroscopic quantum tunneling effect, quantum size effect and other special properties different from macroscopic materials, making nano-zinc oxide in the light, It has a series of new properties in terms of electricity, magnetism and chemistry, such as non-migration, fluorescence, ability to shield ultraviolet rays, photocatalytic activity and other activities. These new properties further promote t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L101/00C01G9/02B82Y30/00
Inventor 贾少晋丁振刚江平开刘臻
Owner SHANGHAI UNIV