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Polymer/carbon nano composite material and preparation method thereof

A carbon nanomaterial and composite material technology, which is applied in the field of polymer/carbon nanocomposite materials and their preparation, can solve problems such as the dispersibility of carbon nanomaterials, and achieve the effects of convenient catalyst source, low price and simple reaction operation.

Pending Publication Date: 2017-04-26
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, for polyolefin / carbon nanocomposites, since polyolefin substrates such as polyethylene and polypropylene do not have special structures and reactive functional groups, how to improve the compatibility between carbon nanomaterials and the matrix through surface modification of carbon nanomaterials and the dispersion of carbon nanomaterials in the matrix are still two major problems. It is necessary to find a more effective solution to the two major problems of "dispersion" and "interface" according to the characteristics of polyolefins and carbon nanomaterials, so that they are more suitable for the preparation of Polyolefin / Carbon Nanocomposite

Method used

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  • Polymer/carbon nano composite material and preparation method thereof
  • Polymer/carbon nano composite material and preparation method thereof
  • Polymer/carbon nano composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The experimental materials used in this example can be easily obtained from commercial companies unless otherwise specified.

[0037] (1) Weigh an appropriate amount of graphene microflakes into an oven, dry at 80°C for 12h, and weigh an appropriate amount of Lewis acid catalyst into a vacuum oven, and dry at 110°C for 15h.

[0038] (2) Add polyethylene (98.2%), dried carbon nanomaterials (1%), and Lewis acid catalyst (0.8%) into the internal mixer according to the weight percentage in the above brackets and carry out melt blending at a temperature of 180 °C, the blending time is 8 min, and the speed of the internal mixer is 60 rpm.

Embodiment 2

[0040] The experimental materials used in this example can be easily obtained from commercial companies unless otherwise specified.

[0041] (1) Weigh an appropriate amount of graphene microflakes into an oven, dry at 80°C for 12h, and weigh an appropriate amount of Lewis acid catalyst into a vacuum oven, and dry at 110°C for 15h.

[0042] (2) chlorinated polyethylene (98.5%) and dried carbon nanomaterials (1%), Lewis acid catalyst (0.5%) are added to the internal mixer according to the weight percentage in the above brackets and carried out melt blending, the temperature The temperature is 170°C, the blending time is 6min, and the rotational speed of the internal mixer is 60rpm.

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Abstract

The invention discloses a polymer / carbon nano composite material and a preparation method thereof. The composite material is prepared from the following components in percentage by weight: 93 to 100% of polyolefin, 0.5 to 5% of carbon nano material, and 0.2 to 2% of Lewis acid catalyst, wherein the total percentage by weight is 100%. The composite material has the advantages that the self structure of carbon nano material is not destroyed, and the carbon nano material can be well dispersed in the polymer matrix.

Description

technical field [0001] The invention relates to the field of preparation of a polymer / carbon nanocomposite material that maintains good structural performance of carbon nanomaterials and is uniformly dispersed in a matrix, in particular to a polymer / carbon nanocomposite material and a preparation method thereof. [0002] technical background [0003] The large specific surface area and high surface energy of carbon nanomaterials make them easy to agglomerate to form larger aggregates and reach a relatively stable state. This is a thermodynamically spontaneous process. No matter in which field carbon nanomaterials are applied, the formation of agglomerates is unfavorable. Especially for polymer / carbon nanocomposites, the agglomeration of carbon nanomaterials not only reduces the effective addition amount, increases the amount of carbon nanomaterials, and causes unnecessary waste; moreover, these agglomerated carbon nanomaterials may become a potential stress concentration poi...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/28C08K7/00C08K3/04C08K3/16
CPCC08K3/04C08K3/16C08K7/00C08K2003/164C08K2201/011C08L23/06C08L23/286
Inventor 郭正虹冉诗雅方征平
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG