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Siloxane-acrylate copolymer/nano-silicon dioxide organic/inorganic hybrid nano-material and preparation method thereof

A nano-silica, nano-material technology, applied in the direction of dyeing low-molecular-weight organic compounds, fibrous fillers, etc., to achieve the effects of good hardness, mild reaction conditions and high product yield

Inactive Publication Date: 2011-09-07
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method involves a silicon-acrylic polymer / nano-silica composite, it is not prepared by in-situ polymerization.

Method used

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  • Siloxane-acrylate copolymer/nano-silicon dioxide organic/inorganic hybrid nano-material and preparation method thereof
  • Siloxane-acrylate copolymer/nano-silicon dioxide organic/inorganic hybrid nano-material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1) Preparation of nano silica modified by silane coupling agent:

[0039] In a dry two-necked flask equipped with a reflux condenser, add 1 part of nano-silica, 200 parts of dry toluene and 1 part of 3-aminopropyltrimethoxysilane in molar ratio sequentially. Connect an argon bag to the other end of the condenser tube, vacuumize and fill with an inert gas to remove the air in the system, and react under reflux at 80°C in an oil bath for 12h. After cooling down, centrifuge, pour off the upper solvent, wash with toluene and acetone ultrasonically in order to remove the adsorbed silane coupling agent, and vacuum-dry at 45°C for 24 hours to obtain nano-silica modified by silane coupling agent.

[0040] 2) Preparation of nano silicon dioxide atom transfer radical surface initiator:

[0041] Add 1 part of nano-silica modified by silane coupling agent and 200 parts of toluene in molar ratio to the two-necked bottle treated with baking bottle, seal the vacuum and repeat the ope...

Embodiment 2

[0047] 1) Preparation of nano silica modified by silane coupling agent:

[0048] In a dry two-necked flask equipped with a reflux condenser, 1 part of nano-silica, 250 parts of dry toluene and 1.5 parts of 3-aminopropyltrimethoxysilane were sequentially added in molar ratio. A nitrogen bag was connected to the upper end of the condenser tube, vacuum-filled with an inert gas to remove the air in the system, and reflux reaction at 110° C. in an oil bath for 18 hours. Centrifuge after cooling down, pour off the upper solvent, wash with a large amount of toluene and acetone in order to remove the adsorbed silane coupling agent, and vacuum dry at 45°C for 24 hours to obtain nano-silica modified by silane coupling agent.

[0049] 2) Preparation of nano silicon dioxide atom transfer radical surface initiator:

[0050] Add 1 part of nano-silica modified by silane coupling agent and 250 parts of toluene into the baked two-necked bottle according to the molar ratio, seal the vacuum-fil...

Embodiment 3

[0054] 1) Except that the reaction temperature is 120° C., the reflux time is 24 h, and the toluene is 300 parts, the others are the same as step 1) in Example 1.

[0055] 2) Except that toluene is 300 parts, triethylamine is 5 parts, 2-bromoisobutyryl bromide is 2.5 parts, reaction temperature is 30° C. and reaction time is 30 h, the others are the same as step 2) in Example 1.

[0056] 3) Except that the methyl methacrylate is 200 parts, the toluene is 300 parts, the reaction time is 10 h, and the drying temperature is 50° C., the others are the same as step 3) in Example 1.

[0057] 4) Except that the monomer is 50 parts, the toluene is 300 parts, and the reaction time is 16 hours, the others are the same as step 4) in Example 1.

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Abstract

The present invention provides a siloxane-acrylate copolymer / nano-silicon dioxide organic / inorganic hybrid nano-material and a preparation method thereof. The invention relates to an organic / inorganic hybrid nano-material and a preparation method thereof, in particular to a siloxane-acrylate copolymer / silicon dioxide (SiO2) organic / inorganic hybrid nano-material and a preparation method thereof. The invention provides a siloxane-acrylate copolymer / nano-silicon dioxide organic / inorganic hybrid nano-material with moderate reaction conditions, definite reaction product structure and simple and convenient operation and a method for preparing same. The method comprises the following steps of: firstly preparing the nano-silicon dioxide modified by a silane coupling agent, subsequently preparing nano-silicon dioxide atom transfer radical surface initiator, subsequently preparing SiO2-polymethyl methacrylate macromolecular initiator and finally preparing the siloxane-acrylate copolymer / nano-silicon dioxide organic / inorganic hybrid nano-material.

Description

technical field [0001] The present invention relates to a kind of organic / inorganic hybrid nano material and preparation method thereof, especially relate to a kind of silicon acrylic polymer / silicon dioxide (SiO 2 ) Organic / inorganic hybrid nanomaterial and preparation method thereof. Background technique [0002] Organic / inorganic hybrid nanomaterials possess comprehensive properties of both organic and inorganic materials. In traditional organic composite materials such as polymer composite materials, micron-sized fillers are usually filled into the polymer matrix to improve the strength and hardness of the polymer matrix. The above-mentioned composite materials still have certain defects, such as the improvement of hardness is at the expense of the toughness and optical transparency of the material. Polymer composites filled with inorganic nanoparticles can overcome these defects. In addition, the combination of organic and inorganic components at the nanoscale in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F297/00C08F292/00C09C1/28C09C3/08
Inventor 罗正鸿于海江
Owner XIAMEN UNIV
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