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Method for preparing polyhexamethylene glycol/ terminal hydroxyl multi-wall carbon nanotube nanocomposite film

A technology of polyethylene adipate and multi-wall carbon nanotubes is applied in the field of preparing polyethylene adipate/hydroxyl-terminated multi-wall carbon nanotube nanocomposite films, which can solve the problem of low crystallinity and slow forming rate. , thermal stability and poor physical and mechanical properties, to achieve the effect of increasing added value, increasing crystallization temperature, and shortening molding cycle

Inactive Publication Date: 2017-10-10
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyethylene adipate glycol has defects such as low crystallinity, slow molding rate, poor thermal stability and physical and mechanical properties, which greatly limit its wide application.
At present, people mostly use methods such as copolymerization with polylactic acid, or blending with polyvinylidene fluoride to improve the thermal stability and mechanical properties of polyethylene adipate glycol, but there is little research on nanocomposites.

Method used

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  • Method for preparing polyhexamethylene glycol/ terminal hydroxyl multi-wall carbon nanotube nanocomposite film
  • Method for preparing polyhexamethylene glycol/ terminal hydroxyl multi-wall carbon nanotube nanocomposite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 (Example 1 is a comparative example, which is a composite film prepared under the condition of endless hydroxyl multi-walled carbon nanotubes):

[0018] 1) Take out the hydroxyl-terminated multi-walled carbon nanotubes after vacuum drying for 3 days, weigh 0.000g of hydroxyl-terminated multi-walled carbon nanotubes and place them in 10mL of N,N-dimethylformamide (DMF) solvent, and ultrasonically disperse them for 1h ;

[0019] 2) Weigh 0.5g polyethylene adipate glycol and dissolve it in 10mL DMF;

[0020] 3) Mix the two solutions obtained in step 1) and step 2) at a ratio of 0.5:0.000, mechanically stir for 30 minutes and continue to use ultrasonic dispersion for 2 hours, and finally mix the hydroxyl-terminated multi-walled carbon nanotubes with polyethylene adipate glycol Evenly, pure polyethylene adipate glycol casting solution is obtained;

[0021] 4) Pipette the casting solution and solidify it into a blended film on a constant temperature hot stage at 4...

Embodiment 2

[0025] 1) Take out the hydroxyl-terminated multi-walled carbon nanotubes after vacuum drying for 3 days, weigh 0.001g of hydroxyl-terminated multi-walled carbon nanotubes and put them into 10ml of N,N-dimethylformamide (DMF) solvent, and ultrasonically disperse for 1h ;

[0026] 2) Weigh 0.5g polyethylene adipate glycol and dissolve it in 10mL DMF;

[0027] 3) Mix the two solutions obtained in step 1) and step 2) at a ratio of 0.5:0.001, mechanically stir for 30 minutes and continue to use ultrasonic dispersion for 2 hours, and finally mix the hydroxyl-terminated multi-walled carbon nanotubes with polyethylene adipate glycol Uniformly, obtain the casting film solution that ratio is 0.2% polyethylene adipate / hydroxyl-terminated multi-walled carbon nanotubes;

[0028] 4) Pipette the casting solution and solidify it into a blended film on a constant temperature hot stage at 20°C;

[0029] 5) The blend film prepared in step 4) was melted on a constant temperature hot stage at 80...

Embodiment 3

[0032] 1) Take out the hydroxyl-terminated multi-walled carbon nanotubes after vacuum drying for 3 days, weigh 0.002g of hydroxyl-terminated multi-walled carbon nanotubes and place them in 10mL of N,N-dimethylformamide (DMF) solvent, and ultrasonically disperse them for 1h ;

[0033] 2) Weigh 0.5g polyethylene adipate glycol and dissolve it in 10mL DMF;

[0034] 3) Mix the two solutions obtained in step 1) and step 2) at a ratio of 0.5:0.002, mechanically stir for 30 minutes and continue to use ultrasonic dispersion for 2 hours, and finally mix the hydroxyl-terminated multi-walled carbon nanotubes with polyethylene adipate glycol Uniformly, the obtained ratio is 0.4% polyethylene adipate / hydroxyl-terminated multi-walled carbon nanotube casting solution;

[0035] 4) Pipette the casting solution and solidify it on a 30°C constant temperature hot stage to form a blended film;

[0036] 5) The blend film prepared in step 4) was melted on a constant temperature hot stage at 80 °C ...

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Abstract

The invention discloses a method for preparing polyhexamethylene glycol / terminal hydroxyl multi-wall carbon nanotube nanocomposite film. The method comprises the following steps of 1, taking the terminal hydroxyl multi-wall carbon nanotube nanocomposite film out after drying for 3 days, weighing different weights of terminal hydroxyl multi-wall carbon nanotube nanocomposite film and putting into 10mL N,N-dimethylformamide solvent and ultrasonically dispersing for 1h; 2, weighing different weights of polyhexamethylene glycol to dissolve into 10mL DMF; 3, mixing solution acquired in the step 1 and the step 2 in proportion, ultrasonically dispersing for 2h after mechanical stirring to acquire cast film solution; 4, moving the cast film solution to cure on a constant temperature heating stage to form film; and 5, cooling the blended film prepared by in the step 4 to 25-35 DEG C for isothermal crystallization until complete crystallization. The method is simple in technology, convenient to operate, short in preparation period, and capable of being used as a degradable functional high polymer material, and has potential application value in aspects of capacitors, sensors and biological medical instruments.

Description

technical field [0001] The invention belongs to the technical field of preparing polyethylene adipate / hydroxyl-terminated multi-wall carbon nanotube nanocomposite films, and in particular relates to a method for preparing polyethylene adipate / hydroxyl-terminated multi-wall carbon nanotube nanocomposite films method. Background technique [0002] With the deterioration of environmental problems and people's concern about the living environment, biodegradable materials have received extensive attention. Aliphatic polyesters have become a research hotspot due to their biodegradability and excellent biocompatibility. Polyethylene adipate is an excellent aliphatic polyester, which is easily decomposed and metabolized by various microorganisms in nature or enzymes in animals and plants, and finally forms carbon dioxide and water. However, polyethylene adipate glycol has defects such as low crystallinity, slow molding rate, poor thermal stability and physical and mechanical prope...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K7/24C08J5/18C08J7/00
CPCC08K7/24C08J5/18C08J7/08C08J2367/02C08K2201/011C08L2201/06C08L2203/16C08L67/02
Inventor 王海军李镇伟阮潇潇杨茜
Owner SHAANXI UNIV OF SCI & TECH
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