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A method for directly preparing conductive polyester composites filled with porous carbon materials

A porous carbon material, direct technology, applied in the field of preparation of porous carbon material conductive polyester, can solve the problems of increased melt viscosity, increased cost, poor processability and mechanical properties, etc.

Active Publication Date: 2016-01-13
CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The simple blending of porous carbon materials and polyesters usually requires a high content of conductive fillers to meet the requirements of electrical conductivity, resulting in increased melt viscosity of the composite system, poor processability and mechanical properties, and increased costs

Method used

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  • A method for directly preparing conductive polyester composites filled with porous carbon materials
  • A method for directly preparing conductive polyester composites filled with porous carbon materials
  • A method for directly preparing conductive polyester composites filled with porous carbon materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Prepare 400.0 mL of 0.10 mol / L KOH solution, then add 40.0 g of carbon black into the solution, stir at room temperature for 12 h, suction filter, wash, and vacuum dry at 100°C for 12 h to obtain a catalyst.

[0020] Weigh 43.2mmol of bisphenol A and 46.7mmol of diphenyl carbonate into a three-necked flask, add 0.5g of catalyst, and then divide into two reaction stages of transesterification and polycondensation.

[0021] use CH 2 Cl 2 Extract the PC in the product, and then according to "GB / T1632-93 Polymer Dilute Solution Viscosity and Intrinsic Viscosity Determination", the viscosity-average molecular weight measured by Ubbelohde's viscometer is 22803g·mol -1 .

[0022] The obtained product is made into a disc with a thickness of about 1.0mm, and the volume resistivity of the sample is measured by a multimeter to be 1.56×10 3 Ω·m.

Embodiment 2-6

[0024] Under the same conditions, the amount of the catalyst was changed to investigate its influence on the electrical conductivity of the product. The test conditions were the same as in Example 1, and the results are listed in Table 1.

[0025] Table 1 The influence of conductive filling amount on the conductivity of samples

[0026]

[0027]

Embodiment 7

[0029] Prepare 100.0 mL of 0.10 mol / L KOH solution, then add 10.00 g of carbon nanotubes into the solution, stir at room temperature for 12 h, filter with suction, wash, and vacuum dry at 100°C for 12 h to obtain a catalyst.

[0030] Weigh 43.2mmol of bisphenol A and 46.7mmol of diphenyl carbonate into a three-necked flask, add 1.5g of catalyst, and then divide into two reaction stages of transesterification and polycondensation.

[0031] use CH 2 Cl 2 Extract the PC in the product, and then according to "GB / T1632-93 Determination of Viscosity and Intrinsic Viscosity of Dilute Polymer Solution" using Ubbelohde viscometer to measure the viscosity-average molecular weight of 20181g·mol -1 .

[0032] The obtained product is made into a disc with a thickness of about 1.0mm, and the volume resistivity of the sample is measured by a multimeter to be 4.14×10 3 Ω·m.

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Abstract

The invention relates to a method for directly preparing a porous carbon material filling conducting polyester composite material. The conducting polyester is prepared by a meting transesterification method by taking a porous carbon material loading alkali compound as a catalyst and a dihydroxyl compound and a diester compound as the raw materials. A product of which the volume resistivity is less than 10<3> Omega*m can be obtained under the condition that the filling mass percent of the porous carbon material is 1 to 10 percent. The method is simple and practicable; a small amount of the carbon material is used; and the polyester material with good electrical properties can be directly synthesized by using the raw materials.

Description

technical field [0001] The invention relates to a preparation method of a porous carbon material conductive polyester. The polyester monomer is mixed with a catalyst-loaded porous carbon material, and the polymer conductive material is directly synthesized by a melting transesterification method. Background technique [0002] The method of adding conductive fillers to polyester materials to prepare composite conductive polymers with durable and stable conductive properties has the advantages of simple process, light weight, easy molding, one-time completion of products, easy adjustment of resistivity and low total cost. In recent years, it has been widely used in many industries such as electronics, energy, chemical industry, and aerospace. Porous carbon materials not only have excellent electrical conductivity, but also have a very superior size effect, and are widely used to fill polyester materials to prepare conductive composites. Because carbon black has low price, str...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/82C08G64/20C08K7/24C08K3/04
Inventor 杨先贵张廷键胡静王公应杨建蔡家胜刘旭冉
Owner CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI
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