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Confinedly-assembled thermoelectric composite material and preparation method thereof

A composite material and thermoelectric technology, applied in the direction of thermoelectric device junction lead-out materials, etc., can solve the problems of low Seebeck coefficient and thermoelectric figure of merit, and achieve the effect of simplifying the production process, improving production efficiency and reducing the use

Inactive Publication Date: 2019-12-31
CHANGZHOU INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem of low Seebeck coefficient and thermoelectric figure of merit of polymer composite materials, a kind of confined assembly low-dimensional thermoelectric composite material and its preparation method are provided. The composite material of the present invention has relatively high Seebeck coefficient and thermoelectric figure of merit. figure of merit

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for preparing a confinement assembled thermoelectric composite material, comprising the steps of:

[0037] (1) Preparation of modified loofah fiber: cut loofah into 1cm × 1cm × 1cm block cylinder, put it into a beaker, add 1L of prepared 0.001mol / L NaOH solution in the beaker, and heat it at 50°C After standing for 50 hours, wash with deionized water to neutrality, and dry; put the loofah of alkali treatment into another beaker, add 0.05mol / L bromic peroxodisulfuric acid solution of 1L prepared in the beaker, Place at 30°C for 10 hours, then wash with deionized water until neutral, and dry to obtain modified loofah fiber, which is ready for use;

[0038] (2) Preparation of conductive loofah fiber: Add 20mL of 0.5g / L pyrrole monomer solution, 0.001g of sodium dodecylsulfonate, 0.005g of ED-900, 0.003 g of ferric chloride, 0.01 g of PEDOT:PSS, 0.015 g of polyvinylpyrrolidone (molecular weight of 300,000 g / mol), and 0.5 g of modified loofah fiber, reacted at 180 ...

Embodiment 2

[0047] A method for preparing a confinement assembled thermoelectric composite material, comprising the steps of:

[0048] (1) Preparation of modified loofah fiber: cut loofah into 1cm × 0.5cm × 0.5cm block cylinder, put it into a beaker, add 1L of 5mol / L KOH solution prepared in the beaker, and heat it at 20°C After standing for 0.5h, wash with deionized water until neutral, and dry; put the alkali-treated loofah into another beaker, add 1L of 0.03mol / L sodium hypochlorite solution prepared in the beaker, and heat it at 25°C Put it down for 7h, then wash it to neutral with deionized water, and dry to obtain the modified loofah fiber, which is ready for use;

[0049] (2) Preparation of conductive loofah fiber: Add 10mL of 1g / L pyrrole monomer solution, 0.003g of sodium dodecylsulfonate, 0.005g of ED-900, 0.003g into a dry hydrothermal reaction kettle cetyltrimethylammonium bromide, 0.01g of D-2000, 0.006g of ammonium persulfate, 0.02g of PEDOT:PSS, 0.018g of polyethylene glyc...

Embodiment 3

[0057] A method for preparing a confinement assembled thermoelectric composite material, comprising the steps of:

[0058] (1) Preparation of modified loofah fiber: cut loofah into 1cm × 1cm × 3cm long column, put it into a beaker, add 1L of prepared 0.05mol / L NaOH solution in the beaker, and heat it at 30°C After standing for 10 hours, wash with deionized water until neutral, and dry; put the alkali-treated loofah into another beaker, and add 1L of 0.04mol / L methyl perborate solution prepared in the beaker, and dry it at 45 Place it at ℃ for 8 hours, then wash it with deionized water to neutrality, and dry it to obtain modified loofah fiber, which is ready for use;

[0059] (2) Preparation of conductive loofah fiber: Add 50mL of 2g / L pyrrole monomer solution, 0.008g sodium lignosulfonate, 0.02gEDR-148, 0.013g ferric chloride, 0.08 gPEDOT:PSS, 0.012g polyethylene glycol (molecular weight: 60,000 g / mol), and 2.0g modified loofah fiber, reacted at 160°C for 10h, and at the same...

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Abstract

The invention relates to a confinedly-assembled thermoelectric composite material and a preparation method thereof. The method comprises the following steps: mixing loofah sponge fibers with an alkaline solution and an aqueous solution of an oxidant 1 in sequence; after treatment, washing the loofah sponge fibers with water until the loofah sponge fibers are neutral and carrying out drying; then adding the loofah sponge fibers into an aqueous solution of a pyrrole monomer; then adding a morphology control agent, an oxidizing agent 2, a complexing agent and PEDOT: PSS and a dispersant thereof,carrying out a hydrothermal reaction and irradiation treatment at the same time to obtain conductive loofah sponge fibers; fully mixing the conductive loofah sponge fibers with a liquid high-molecularpolymer precursor under ultrasonic treatment and vacuumizing treatment conditions; and carrying out heating and heat-preserved curing to obtain the confinedly-assembled thermoelectric composite material. The material disclosed by the invention has a relatively high seebeck coefficient and a thermoelectric figure of merit; polypyrrole generated in situ and the added PEDOT: PSS have synergistic effect, so the conductivity and mechanical properties of the material can be remarkably improved; and the composite material is relatively low in thermal conductivity and has very good thermoelectric properties.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, in particular to a confined assembly thermoelectric composite material and a preparation method thereof. Background technique [0002] With the acceleration of global industrialization and the rapid growth of population, energy consumption is also increasing worldwide. However, the energy on the earth is limited, and some traditional non-renewable energy sources, such as coal, oil, and natural gas, are becoming increasingly depleted. , The problem of energy shortage has become increasingly prominent, and has become a problem that cannot be ignored in every country. In order to alleviate the contradiction between economic development, energy and the environment, research and development of new renewable clean energy and new efficient energy conversion and storage technologies are imminent. At present, great progress has been made in the development and utilization of renewable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L63/00C08L33/12C08L7/02C08L77/02C08L1/02C08L79/04C08L65/00C08L25/18C08G73/06H01L35/24H10N10/856
CPCC08L83/04C08L63/00C08L33/12C08L7/02C08L77/02C08G73/0611C08L2205/16C08L2205/035H10N10/856C08L1/02C08L79/04C08L65/00C08L25/18
Inventor 董爽向萌
Owner CHANGZHOU INST OF TECH
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