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High-density polyethylene/graphene/polyaniline composite material and synthetic method thereof

A technology of high-density polyethylene and composite materials, which is applied in the field of high-density polyethylene/graphene/polyaniline composite materials and their synthesis to achieve the effects of improving dispersibility, preventing re-aggregation, and decreasing the degree of segregation

Inactive Publication Date: 2014-12-10
TAICANG JINKAI SPECIAL TYPE CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the stabilizing effect of these methods on the PTC effect is relative, not absolute.

Method used

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  • High-density polyethylene/graphene/polyaniline composite material and synthetic method thereof
  • High-density polyethylene/graphene/polyaniline composite material and synthetic method thereof
  • High-density polyethylene/graphene/polyaniline composite material and synthetic method thereof

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preparation example Construction

[0029] This embodiment provides the synthetic method of high-density polyethylene / graphene / polyaniline composite material, such as figure 1 shown, including the following steps:

[0030] Step 1: Place the blend of high density polyethylene and polyaniline / graphene in a high mixer and dry mix it evenly;

[0031] Step 2: Plasticizing the mixture formed in Step 1 in an internal mixer;

[0032] Step 3: discharging, unloading, dicing, and obtaining sheets;

[0033] Step 4: Press and shape the sheet on a flat vulcanizing machine.

[0034] Wherein, the preparation method of the graphene / polyaniline blend is as follows: weigh 1.0 g of aniline and add it to the hydrochloric acid solution, add a certain amount of graphene after ultrasonic dispersion, and slowly add a certain amount of persulfuric acid dropwise under mechanical stirring. Ammonium hydrochloric acid solution, after reacting for 4 hours, the product was repeatedly washed and filtered with deionized water until the filtra...

Embodiment 1

[0037] Step 1: Dry mix high-density polyethylene and graphene / polyphenylene copolymer amine in a high-speed mixer, the mass ratio of polyaniline to graphene is 100:2, polyaniline / graphene blend and high The mass ratio of density polyethylene is 1:1;

[0038] Step 2: plasticize the mixture formed in step 1 in a banbury mixer, the banbury temperature is 150°C, and the plasticization time is 15 minutes;

[0039] Step 3: discharging, unloading, dicing, and obtaining sheets;

[0040] Step 4: Press and form the sheet on a flat vulcanizer. The conditions for press forming are 5 minutes of preheating, 5 minutes of hot pressing, pressure of 18 MPa, and temperature of 250°C.

Embodiment 2

[0042] Step 1: Dry mix high-density polyethylene and graphene / polyaniline copolymer in a high-density mixer, the mass ratio of polyaniline to graphene is 100:20, polyaniline / graphene blend and high-density polyethylene The mass ratio of ethylene is 1:3;

[0043] Step 2: plasticize the mixture formed in step 1 in an internal mixer, the banburying temperature is 180°C, and the plasticizing time is 8 minutes;

[0044] Step 3: discharging, unloading, dicing, and obtaining sheets;

[0045] Step 4: Press and form the sheet on a flat vulcanizer. The conditions for press forming are: preheating for 10 minutes, hot pressing for 2 minutes, pressure at 18 MPa, and temperature at 150°C.

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Abstract

The invention discloses a high-density polyethylene / graphene / polyaniline composite material and a synthetic method thereof. According to the high-density polyethylene / graphene / polyaniline composite material, the surface of graphene is coated with polyaniline to form a polyaniline / graphene blend, and the polyaniline / graphene blend is dispersed in a high-density polyethylene substrate. As the polyaniline (PANI) coats the graphene (CB) to be blended with the high-density polyethylene (HDPE) substrate, the dispersity of the graphene is improved, the degree of crystallinity of the high-density polyethylene is reduced, therefore, the PTC intensity and the stability of the polyethylene / graphene / polyaniline composite material are improved.

Description

technical field [0001] The invention relates to a self-limiting temperature conductive functional material and a preparation method thereof, in particular to a high-density polyethylene / graphene / polyaniline composite material and a synthesis method thereof. Background technique [0002] In recent decades, research on conductive polymer composites has made significant progress. Graphene is the main component of conductive composite materials, which directly affects the conductivity and switching characteristics of PTC materials. The composite material formed by dispersing conductive particles such as graphene or metal in the polymer matrix is ​​a new type of conductive polymer material. Filling conductive particles into the polymer matrix can not only improve the conductivity of the composite, but also increase the resistance value over a wide temperature range (room temperature to the melting temperature of the matrix material). Polymer PTC materials have broad application...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K9/10C08K3/04C08G73/02
CPCC08K9/10C08K3/04C08K9/04C08L2207/062C08L23/06
Inventor 蔡建球
Owner TAICANG JINKAI SPECIAL TYPE CABLE
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