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Preparation method of high thermal conductivity flexible heating wire based on carbon nanotubes

A technology of carbon nanotubes and high thermal conductivity, which is applied in the direction of electric heating devices, ohmic resistance heating, and the shape of heating elements, etc., can solve the problems of poor thermal conductivity, poor comprehensive performance of heating fabrics, and high cost, and achieve good practical value and easier Dyeing, more flexible effect

Active Publication Date: 2018-05-18
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a flexible heating wire with high thermal conductivity based on carbon nanotubes, which solves the problems of high cost of use of the existing heating wire, poor thermal conductivity, and poor comprehensive performance of the prepared heating fabric

Method used

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preparation example Construction

[0022] The preparation method of the present invention will be described in detail below through specific embodiments.

[0023] The preparation method of the high thermal conductivity flexible heating wire based on carbon nanotubes of the present invention comprises the following steps:

[0024] Step 1, using the alkali subtraction method to carry out interface treatment on the selected polyester yarn to obtain a polyester yarn base material with strong composite fastness. The alkali subtraction method is specifically: immerse the polyester yarn in a NaOH solution with a mass fraction of 1-3%, The treatment conditions are as follows: the temperature of NaOH solution is 90-110°C, the immersion time is 2-5min, the polyester yarn is then taken out and washed 4-6 times, and then dried;

[0025] Step 2, prepare the carbon nanotube heat conduction suspension and pour it into the printing and dyeing device, and at the same time immerse the polyester yarn base material in step 1 into ...

Embodiment 1

[0030] (1) Pretreatment of polyester yarn

[0031] The interface treatment of the selected polyester yarn is carried out by alkali subtraction, that is, the polyester yarn is immersed in a NaOH solution with a mass fraction of 1%, and then it is taken out and washed 4 times and then dried to obtain a polyester yarn substrate with strong composite fastness; The parameters are NaOH solution temperature 90°C and immersion time 2min.

[0032] (2) Deposition of carbon nanotubes

[0033] Add carbon nanotubes, 3-sulfopropyl tetradecyl dimethyl betaine and polyoxyethylene dodecyl sulfonate at a mass ratio of 9:0.3:1 to quantitative deionized water, and then pour ultrasonic Oscillate in a cleaner to obtain a carbon nanotube thermal suspension, ultrasonic time 35min, ultrasonic temperature 30°C, frequency 40HZ; pour the carbon nanotube thermal suspension into the printing and dyeing device, and at the same time immerse the polyester yarn substrate in it for dip-dyeing, dip-dyeing The ...

Embodiment 2

[0037] (1) Pretreatment of polyester yarn

[0038] The interface treatment of the selected polyester yarn is carried out by alkali subtraction, that is, the polyester yarn is immersed in a NaOH solution with a mass fraction of 3%, and then taken out and washed 6 times and then dried to obtain a polyester yarn substrate with strong composite fastness; The parameters are NaOH solution temperature 110°C and immersion time 5min.

[0039] (2) Deposition of carbon nanotubes

[0040] Add carbon nanotubes, 3-sulfopropyl tetradecyl dimethyl betaine and polyoxyethylene dodecyl sulfonate at a mass ratio of 11:0.5:1 to quantitative deionized water, and then pour ultrasonic Oscillate in a cleaner to obtain a carbon nanotube thermal suspension, ultrasonic time 45min, ultrasonic temperature 50°C, frequency 60HZ; pour the carbon nanotube thermal suspension into the printing and dyeing device, and at the same time immerse the polyester yarn substrate in it for dip-dyeing, dip-dyeing The time...

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Abstract

The invention discloses a preparation method of a high-heat-conduction flexible heating wire based on a carbon nano tube. The high-heat-conduction flexible heating wire is obtained through carrying out alkali reduction method pretreatment on dacron yarn, subsequently mixing and dip-dying with carbon-nano-tube heat-conduction suspension liquid and finally carrying out primary curing, flexible treatment and final curing in sequence. According to the preparation method provided by the invention, the carbon nano tube is adopted as a heat-conduction main material; meanwhile, the excellent thermal performance of the carbon nano tube is organically combined with the favorable mechanical performance of a dacron composite fiber; the high-heat-conduction flexible heating wire is low in energy consumption and has high-efficiency heating efficacy after being electrified; compared with a conventional metal heating wire, the high-heat-conduction flexible heating wire not only has better flexibility, strength and elasticity, but also has better wearing safety at the same time, and is convenient to make into a textile; compared with a composite heating material, a filling material is dispersed quite well; the heat conversion ratio is high; meanwhile, the comprehensive performance of the composite heating material is improved; the high-heat-conduction flexible heating wire has quite good practical value.

Description

technical field [0001] The invention belongs to the technical field of flexible heating wires, and in particular relates to a method for preparing a flexible heating wire with high thermal conductivity based on carbon nanotubes. Background technique [0002] With the development of science and technology and the improvement of living standards, people have higher and higher requirements for daily clothing, daily-use and professional textiles. Textiles are developing in the direction of intelligence, interaction, and highly integrated functions, making textiles have many Specific functions, of which flexible heating textiles are one of its important branches. [0003] To make smart textiles achieve excellent thermal conductivity, heating fabrics are required to have good thermal conductivity, corrosion resistance, light weight, good flexibility, and low energy consumption. At present, there are two types of common heating fabrics: one is the traditional heating fabric, which...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/564D06M15/693D06M11/74D06M13/463D06M15/53D06M11/38H05B3/54D06M101/32
CPCD06M11/38D06M11/74D06M13/463D06M15/53D06M15/564D06M15/693D06M2101/32D06M2200/50H05B3/54H05B2203/017
Inventor 肖渊李岚馨尹博刘欢欢
Owner XI'AN POLYTECHNIC UNIVERSITY
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