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High thermal conductivity acrylic fiber and preparation method thereof

A technology with high thermal conductivity and acrylic fibers, which is applied in the fields of rayon manufacturing, fiber chemical characteristics, textiles and papermaking, etc. It can solve the problems of complex process and decreased fiber strength of fiber products, and achieve unique ideas, reduce the amount of addition, and expand the field of use. Effect

Active Publication Date: 2015-08-26
ZHEJIANG TAISUO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this invention, polyacrylonitrile, acrylonitrile and phosphorus-containing flame retardants are first mixed, and then the mixture is subjected to operations such as freezing, irradiation, polymerization, and water washing, and finally the obtained spinning solution is spun to obtain flame-retardant polyacrylonitrile fibers , the process of this method is relatively complicated, and the flame retardant has not been specially treated, which can easily cause a significant decrease in the fiber strength of the final fiber product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A kind of preparation method of high thermal conductivity acrylic fiber, firstly make graphene concentrate, concrete steps are:

[0040] Firstly, the aqueous titanate bis(dioctyloxypyrophosphate) ethylene titanate solution is dissolved in water, the dissolving process is through mechanical stirring, the rotating speed is 50 rpm, and the stirring time is 5 minutes. The temperature is 10°C, and then adding graphene powder with a length and width of 1 to 200 microns and a thickness of 6 to 10 nanometers, water-based titanate bis(dioctyloxypyrophosphate)ethylene titanate The mass is 2% of the graphene powder mass, ultrasonic dispersion is carried out in a magnetic field with a magnetic field strength of 0.5T, the ultrasonic frequency of ultrasonic dispersion is 20KHz, the power is 1 kilowatt, the ultrasonic dispersion time is 30 minutes, and the temperature is controlled at 10°C. Promptly obtain graphene dispersion liquid, the mass fraction of graphene powder in graphene di...

Embodiment 2

[0047] A kind of preparation method of high thermal conductivity acrylic fiber, firstly make graphene concentrate, concrete steps are:

[0048] First, dissolve the chelate (type 311W) solution of aqueous titanate bis(dioctyloxypyrophosphate) ethylene titanate and triethanolamine in water. The process of dissolving is through mechanical stirring at a speed of 100 rev / min, the stirring time is 30 minutes, the temperature is 35°C, then add the graphene powder whose length and width are 1-200 microns respectively, and the thickness is 6-10 nanometers, aqueous titanate bis(dioctyloxy The quality of the chelate solution of pyrophosphate base) ethylene titanate and triethanolamine is 1.5% of graphene powder mass, and in the magnetic field that magnetic field strength is 5T, carry out ultrasonic dispersion, the ultrasonic frequency of ultrasonic dispersion is 30KHz, The power is 5 kilowatts, the ultrasonic dispersion time is 90 minutes, and the temperature is controlled at 60 ° C to o...

Embodiment 3

[0055] A kind of preparation method of high thermal conductivity acrylic fiber, firstly make graphene concentrate, concrete steps are:

[0056] First dissolve the aqueous titanate bis(dioctyl pyrophosphate) glycolate titanate in water, the dissolving process is through mechanical stirring, the speed is 80 rpm, the stirring time is 20 minutes, the temperature at 30°C, then add graphene powder whose length and width are 1-200 microns and thickness 6-10 nanometers, and the mass of aqueous titanate bis(dioctyl pyrophosphate) glycolate titanate It is 1.5% of the mass of graphene powder, and ultrasonic dispersion is carried out in a magnetic field with a magnetic field strength of 2T. The ultrasonic frequency of ultrasonic dispersion is 10KHz, the power is 3 kilowatts, the ultrasonic dispersion time is 50 minutes, and the temperature is controlled at 20°C. Graphene dispersion liquid, the massfraction of graphene powder in graphene dispersion liquid is 6%; Then under the action of th...

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Abstract

The present invention relates to a high thermal conductivity acrylic fiber and a preparation method thereof. The high thermal conductivity acrylic fiber is prepared by adding graphene concentrate during the dissolving of polyacrylonitrile to uniformly disperse the graphene in the polyacrylonitrile spinning stock solution, and conducting wet spinning on the stock solution. The method is as below: first mixing, heating and stirring polyacrylonitrile, graphene concentrate and solvent according to weight ratio until complete dissolution of polyacrylonitrile, and then filtering and removing bubbles to obtain polyacrylonitrile spinning stock solution; and finally conducting wet spinning on the stock solution to obtain the high thermal conductivity acrylic fiber. The high thermal conductivity acrylic fiber contains uniformly dispersed specially treated ultrafine graphene, and the treated graphene have uniform particles, few layers and high activity, does not generate agglomeration phenomenon during addition, and can be well combined with the polyacrylonitrile, thereby significantly improving the thermal performance of acrylic fiber.

Description

technical field [0001] The invention belongs to the technical field of acrylic fiber preparation, and relates to acrylic fiber with high thermal conductivity and a preparation method thereof, in particular to a polypropylene in which graphene is uniformly dispersed by adding a treated graphene concentrated solution into the polyacrylonitrile dissolution process Acrylonitrile spinning stock solution, and a method for preparing high thermal conductivity acrylic fiber by wet spinning operation with polyacrylonitrile spinning stock solution. Background technique [0002] Acrylic fiber (polyacrylonitrile fiber) is one of the four major varieties of synthetic fibers. Its output is second only to polyester fiber and polyamide fiber in synthetic fibers. The world's output has reached 3 million tons per year. Polyacrylonitrile fiber is an excellent raw material for textile products. The fiber is light-resistant, radiation-resistant, soft, and warm. It is known as "artificial wool" an...

Claims

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Application Information

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IPC IPC(8): D01F6/54D01F1/10
Inventor 毛惠敏陆炅石建华
Owner ZHEJIANG TAISUO TECH
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