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A nanoparticle compatibilizer based on carbon quantum dots and its preparation method and application

A technology of nanoparticles and carbon quantum dots, which is applied in the field of nanoparticle compatibilizers based on carbon quantum dots and its preparation, can solve the problems of reduced compatibility efficiency, achieve improved compatibility, high yield, and broad application prospects Effect

Active Publication Date: 2020-11-20
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, due to the inherent flexibility of the copolymer, this compatibilizer is easy to detach from the interface to form micelles during the reaction process of strong shear, resulting in a decrease in compatibility efficiency. Therefore, a copolymer-type compatibilizer is used to prepare copolymer The key to improving the performance of blended polymers is to enhance the stability of the interface between the two phases under high shear force.

Method used

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  • A nanoparticle compatibilizer based on carbon quantum dots and its preparation method and application

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Experimental program
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Embodiment 1

[0040] This embodiment provides a preparation of amino carbon quantum dots, specifically as follows:

[0041] Weigh 0.5g of citric acid powder and 10ml of amino silicone oil with a molecular weight of 300 into a 100ml polytetrafluoroethylene lining, and put the lining in a stainless steel reaction kettle after passing through nitrogen gas, put it in an oven and react at 150°C for 6h . After the reactor is cooled to room temperature, a light brown liquid is obtained, which is the amino carbon quantum dot I (NH 2 -CDs-1).

Embodiment 2

[0043] The present embodiment provides a kind of preparation method of copolymer, and the steps are as follows:

[0044] With the NH that embodiment 1 makes 2 -CDs-1 is a compatibilizer.

[0045] 3g NH 2 - CDs-1 were dissolved in 20 ml THF, 30 g methyl vinyl silicone rubber (MVQ) was dissolved in 300 ml THF.

[0046] After mixing the above solutions evenly, remove the solvent and dry to obtain MVQ / NH 2 - CDs-1 composite material;

[0047] The above composite material and 70g TPU were melted and kneaded in a Haake internal mixer under the conditions of 180°C, 5min, and a speed of 60rmp, and the final composition was MVQ / TPU / NH2 -The blend system of CDs-1(30:70:3).

Embodiment 3

[0052] This embodiment provides a method for preparing amino carbon quantum dots, the steps are as follows:

[0053] Weigh 0.5g of citric acid powder and 10ml of amino silicone oil with a molecular weight of 2000 into a 100ml polytetrafluoroethylene lining, and put the lining in a stainless steel reaction kettle after passing through nitrogen gas, put it in an oven and react at 180°C for 6h . After the reactor is cooled to room temperature, a light brown liquid is obtained, which is the amino carbon quantum dot II (NH 2 -CDs-2). The size is 7nm. Such as figure 1 shown.

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Abstract

The invention belongs to the technical field of polymer blends and carbon nano materials, and particularly relates to a nanoparticle compatibilizer based on carbon quantum dots, and a preparation method and application of the nanoparticle compatibilizer. The nanoparticle compatibilizer based on the carbon quantum dots is characterized in that the nanoparticle compatibilizer is amino carbon quantumdots or polypropylene molecular link modified amino carbon quantum dots; the amino carbon quantum dots are prepared from amino silicone oil and citric acid as raw materials; and the relative molecular weight of the amino silicone oil is 300-4000. According to the nanoparticle compatibilizer, for the first time, the amino carbon quantum dots (NH2-CDs) or the polypropylene molecular link modified amino carbon quantum dots (PP-g-CDs) are used for the preparation of incompatible polymer blends. The characteristic that the carbon quantum dots (or the modified carbon quantum dots) with amino long chains on the surface can form interaction correspondingly with two components of the blends is used, the carbon quantum dots (or the modified carbon quantum dots) are developed to be used as a compatibilizer of the incompatible blends, and the application of the carbon quantum dots to the field of polymer material processing is expanded.

Description

technical field [0001] The invention belongs to the technical field of polymer blends and carbon nanomaterials, and in particular relates to a nanoparticle compatibilizer based on carbon quantum dots and its preparation method and application. Background technique [0002] Polymer blending is a practical and efficient method to prepare materials with good comprehensive properties. However, mutually incompatible polymers are thermodynamically incompatible due to inherently low entropy of mixing, so the mechanical properties of polymer blends prepared solely by polymer blending are not good. Therefore, in order to prepare blended polymers with good comprehensive properties, the most important thing is to improve the compatibility between the copolymer components, which is the key issue to ensure the microphase state and physical and mechanical properties of blended polymers. [0003] At present, in actual production, adding a small amount of compatibilizer to improve the comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08L23/12C08L83/07C08L83/08C08L51/06
CPCC08L23/12C08L75/04C08L2205/03C08L83/04C08L83/08C08L51/06
Inventor 岳冬梅姚乃群王瀚彬田明张立群
Owner BEIJING UNIV OF CHEM TECH
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