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Method for preparing nanometer silicon dioxide composite material with super concentrated emulsion

A technology of nano-silica and composite materials, which is applied in the field of functionalized nano-composite material preparation and achieves the effects of convenient operation, high product coverage and improved compatibility.

Inactive Publication Date: 2015-02-18
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of ultra-concentrated emulsions to the preparation of light-diffusing materials and light-diffusing agents of the silica series has not been reported yet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In this embodiment, a method for preparing a nano-silica composite material from an ultra-concentrated emulsion comprises the following steps:

[0020] (1) Place 5g of silicon dioxide and 25g of n-butyl oleate in a conical flask and seal it. Stir for 30 minutes at room temperature at a speed of 500r / min, then wash the impregnated silicon dioxide with ethanol for 2- 3 times, after washing, dry in a vacuum oven at 70°C to constant weight;

[0021] (2) Measure deionized water, 4g and 0.4g of sodium dodecylsulfonate respectively, add them together 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 modified silicon dioxide, 1.6g of triallyl isocyanurate, and 0.16g of azobisisobutyronitrile into the Erlenmeyer flask for sealing, and ultrasonically After dispersing for 20 minutes, in the oil phase monomer system mainly composed of modified silica, styrene and triallyl i...

Embodiment 2

[0024] This embodiment is basically the same as Embodiment 1, especially in that:

[0025] In this embodiment, a method for preparing a nano-silica composite material from an ultra-concentrated emulsion comprises the following steps:

[0026] (1) This step is the same as in Embodiment 1;

[0027](2) Measure 4g and 0.4g of deionized water and sodium dodecylsulfonate respectively, add them together to the Erlenmeyer flask and seal them, and stir for 20 minutes at room temperature to dissolve; then add 16g of benzene Ethylene, 1.6g of treated modified silica, 1.6g of triallyl isocyanurate, 0.16g of azobisisobutyronitrile were added together to seal the conical flask, and ultrasonically dispersed in an ultrasonic instrument for 20 minutes , in the oil phase monomer system mainly composed of modified silica, styrene and triallyl isocyanurate, the fraction of modified silica in the total mass of the oil phase monomer is 8.33% , using the initiator azobisisobutyronitrile to account...

Embodiment 3

[0029] In this embodiment, a method for preparing a nano-silica composite material from an ultra-concentrated emulsion comprises the following steps:

[0030] (1) This step is the same as in Embodiment 1;

[0031] (2) Measure 4g and 0.4g of deionized water and sodium dodecylsulfonate respectively, add them together to the Erlenmeyer flask and seal them, and stir for 20 minutes at room temperature to dissolve; then dissolve 16g of benzene Ethylene, 1.6g of treated modified silica, 1.6g of triallyl isocyanurate, 0.1g of azobisisobutyronitrile were added together to seal the conical flask, and ultrasonically dispersed in an ultrasonic instrument for 20 minutes , in the oil phase monomer system mainly composed of modified silica, styrene and triallyl isocyanurate, the fraction of modified silica in the total mass of the oil phase monomer is 8.33% , using the initiator azobisisobutyronitrile to account for 0.52% of the total mass of the oil phase monomers; then slowly add this sol...

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Abstract

The invention discloses a method for preparing a nanometer silicon dioxide composite material with super concentrated emulsion. The method comprises the following steps: firstly, macerating silicon dioxide in butyl oleate for surface modification, leaching out excess butyl oleate with ethyl alcohol for multiple times, dripping modified silicon dioxide, styrene and triene propyl cyanuric acid ester which are used as an oil phase, and azodiisobutyronitrile as an initiating agent into an aqueous phase of deionized water and sodium dodecyl sulfate at a room temperature, and under the protection of nitrogen, obtaining jelly glue-shaped super concentrated emulsion; and transferring the super concentrated emulsion into a centrifugal test tube for centrifugation, removing upper-layer air bubbles, then introducing in the nitrogen, sealing the centrifugal test tube with a rubber plug, placing the centrifugal test tube in a water bath for polyreaction, and successfully preparing a nanometer composite material containing different parts by weight of silicon dioxide through the super concentrated emulsion. The nanometer composite material is added to transparent resin of PC / PMMS / PS and the like, so that the effect of light diffusion is achieved. The nanometer composite material has good ultraviolet resistance and good weather resistance when being applied to packaging materials, optical materials, plastic and the like.

Description

technical field [0001] The invention relates to a method for preparing a light-diffusing material, in particular to a method for preparing a light-diffusing composite material, which is applied in the technical field of preparation of functionalized polymer materials and the technical field of preparation of functionalized nano-composite materials. Background technique [0002] The incandescent lamps used by early people gave people very glare and uncomfortable light, and, with the progress of society and the improvement of living requirements, the demand for energy is increasing. Considering the protection and effective use of resources, LED lights Introduced into the field of lighting. LED lights are light-emitting diodes, which can be used for lighting, with low energy consumption and high brightness. At the same time, there are some disadvantages, such as strong light, glare, and soft visual effects cannot be obtained. In order to overcome this shortcoming, people began...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F226/06C08F2/44C08F2/26C08K9/04C08K3/36C08L25/08C08L69/00C08L25/06
Inventor 贾少晋侯啸天张臻麒江平开王庆孙茜蒙田玲
Owner SHANGHAI UNIV
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