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Colorable and high-conductivity PET (Polyethylene Terephthalate) master batch and preparation method thereof

A masterbatch, high temperature technology, applied in the field of PET masterbatch preparation, can solve the problems of poor mechanical properties, high price, and high amount of conductive carbon black added, and achieve the effects of excellent conductivity, strong spinnability, and easy spinning.

Inactive Publication Date: 2017-09-22
THE SIXTH ELEMENT CHANGZHOU MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conductive carbon black has certain conductivity and low price, but the price of super-high conductive carbon black with better quality is relatively high, and the addition amount of conductive carbon black is generally very high, basically above 10%. In this case, the electrical conductivity is guaranteed, but the mechanical properties are poor
In addition, because carbon black is a kind of filler with strong coloring, it is difficult to blend and cover with other colors, so the singleness of color also limits its application range. If it is blended with high-filling pigments, Electrical conductivity cannot be guaranteed

Method used

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  • Colorable and high-conductivity PET (Polyethylene Terephthalate) master batch and preparation method thereof
  • Colorable and high-conductivity PET (Polyethylene Terephthalate) master batch and preparation method thereof

Examples

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preparation example Construction

[0026] The first embodiment of the present invention provides a method 100 for preparing a graphene-containing PET masterbatch. like figure 1 As shown, the preparation method 100 of the PET master batch of the present invention includes: 101, prepare or provide graphene with a high BET specific surface area; 103, mix the graphene with PET to obtain a PET / graphene mixture; 105, for The PET / graphene mixture is granulated to obtain the PET masterbatch.

[0027] In the present invention, the graphene preferably has a high BET specific surface area. In the present invention, the high BET specific surface area is at 400m 2 / g or more, preferably at 450m 2 / g or more.

[0028] According to a preferred embodiment of the present invention, the graphene is in the form of powder and is prepared by a redox method. For example, use 1 part of graphite and 20 parts of sulfuric acid with a concentration of 65wt%, add 3 parts of potassium permanganate at 8°C, then raise the temperature to...

example 1

[0040] (1) The temperature of the internal mixer is raised to 270°C, and the temperature is kept constant. Weigh 2000g of PET raw material, 100g of BET is 400m 2 / g graphene, join in the banbury mixer with constant temperature and carry out mixing, mixing 15min standby.

[0041] (2) Set the temperature of the forced feeding granulator to 265°C, add the mixed materials in (1) into the granulator with constant temperature, and then start extrusion granulation, and finally obtain a colorable graphene PET conductive mother grain.

example 2

[0043] (1) The temperature of the internal mixer is raised to 270°C, and the temperature is kept constant. Weigh 2000g of PET raw material, 60g of BET is 450m 2 / g graphene, join in the banbury mixer with constant temperature and carry out mixing, mixing 15min standby.

[0044] (2) Set the temperature of the forced feeding granulator to 265°C, add the mixed materials in (1) into the granulator with constant temperature, and then start extrusion granulation, and finally obtain a colorable graphene PET conductive mother grain.

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Abstract

The invention relates to colorable and high-conductivity PET (Polyethylene Terephthalate) master batch and a preparation method thereof. The method comprises the following steps: providing graphene; mixing the graphene with PET to obtain a PET / graphene mixture; pelletizing the PET / graphene mixture to obtain the PET master batch. The invention further relates to the PET master batch containing the graphene, which is prepared by the preparation method, and conductive plastic made from the PET master batch. According to the PET master batch containing the graphene, provided by the invention, conductive and mechanical property requirements can be met at the same time when the adding amount is low (commonly, the adding amount is 1 / 3 to 1 / 2 of the mass of carbon black). Moreover, the graphene is different from the carbon black, is filling with weak coloring power, and can be blended and covered by other pigments, so that the conductive plastic with different colors can be prepared, and an application range is wider.

Description

technical field [0001] The invention relates to the field of polymer composite materials, in particular to a method for preparing PET master batches containing graphene. This PET masterbatch can be colored and has high electrical conductivity. Background technique [0002] Conductive plastic is a commonly used material in engineering. It is a functional polymer material that is processed by mixing thermoplastic resin and conductive substances and processing them in the same way as plastics. The currently widely used conductive polymer materials are generally composite polymer materials, and their filling materials mainly include: a. metal dispersion system; b. carbon black system; c. organic complex dispersion system. Conductive plastics with metal as conductive filler have high cost, strong rigidity, high density, and small application range, which are not suitable for today's lightweight development needs. Conductive plastics in which organic complexes are conductive fil...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K3/04C08K9/02B29B9/06
CPCC08K3/04B29B9/06C08K9/02C08K2201/001C08K2201/006C08L67/02
Inventor 田振宇谢卫宏马宇飞瞿研
Owner THE SIXTH ELEMENT CHANGZHOU MATERIALS TECH
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