Preparation method of reactive-type organic carbon nano filler

A nano-filler and organic carbon technology, which is applied in the field of preparation of reactive organic carbon nano-fillers, can solve the problems of decreased comprehensive performance of resin, inability to achieve expected results, insufficient dispersibility, etc., and achieves low product cost, easy implementation and batch production. The effect of production, improving mechanical properties and heat resistance

Inactive Publication Date: 2016-10-26
XIAN AEROSPACE COMPOSITE MATERIALS INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the comprehensive performance of polymer nanocomposite fillers is heavily dependent on the degree of dispersion of nanofillers, if the dispersion of the fillers is insufficient, they will agglomerate into micron-sized particles, which will not only fail to achieve the desired effect, but may even become a matrix defect and lead to a decline in the comprehensive performance of the resin.
The pure carbon nanofiller has a very stable structure, high chemical stability, inert state, strong van der Waals force, and easy agglomeration, making it difficult to dissolve in traditional organic solvents.

Method used

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  • Preparation method of reactive-type organic carbon nano filler
  • Preparation method of reactive-type organic carbon nano filler
  • Preparation method of reactive-type organic carbon nano filler

Examples

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Effect test

Embodiment 1

[0019] The preparation method of the reactive organic carbon nanofiller of this embodiment comprises the following steps:

[0020] Step 1. Immerse the traditional carbon nanofiller in concentrated nitric acid with a mass percentage concentration of 68%, and perform oxidation treatment with ultrasonic stirring for 6 hours under the condition of excess concentrated nitric acid to obtain hydroxylated carbon nanofiller; the traditional carbon nanofiller specifically used in this embodiment The carbon nanofiller is carbon nanofiber;

[0021] In the specific implementation process of this embodiment, at least 200 mL of concentrated nitric acid is added to each gram of carbon nanofibers to make the concentrated nitric acid excessive;

[0022] Step 2, adding maleic anhydride to ethyl acetate, stirring while adding materials, until the solution reaches saturation, obtaining a saturated solution of ethyl acetate of maleic anhydride; then immersing the hydroxylated carbon nanofiller in t...

Embodiment 2

[0028] The preparation method of the reactive organic carbon nanofiller of this embodiment comprises the following steps:

[0029] Step 1. Immerse the traditional carbon nanofiller in concentrated nitric acid with a concentration of 70% by mass, and carry out oxidation treatment with ultrasonic stirring for 6 hours under the condition of excess concentrated nitric acid to obtain hydroxylated carbon nanofiller; the traditional carbon nanofiller specifically used in this embodiment The carbon nanofiller is carbon nanotube;

[0030] In the specific implementation process of this embodiment, at least 200 mL of concentrated nitric acid is added to each gram of carbon nanotubes, so that the concentrated nitric acid is excessive;

[0031] Step 2, adding maleic anhydride to ethyl acetate, stirring while adding materials, until the solution reaches saturation, obtaining a saturated solution of ethyl acetate of maleic anhydride; then immersing the hydroxylated carbon nanofiller in the s...

Embodiment 3

[0037] The preparation method of the reactive organic carbon nanofiller of this embodiment comprises the following steps:

[0038] Step 1. Immerse the traditional carbon nanofiller in concentrated nitric acid with a mass percentage concentration of 65%, and perform oxidation treatment with ultrasonic stirring for 6 hours under the condition of excess concentrated nitric acid to obtain hydroxylated carbon nanofiller; the traditional carbon nanofiller specifically used in this embodiment The carbon nanofiller is carbon nanofiber;

[0039] In the specific implementation process of this embodiment, at least 200 mL of concentrated nitric acid is added to each gram of carbon nanofibers to make the concentrated nitric acid excessive;

[0040] Step 2, adding maleic anhydride to ethyl acetate, stirring while adding materials, until the solution reaches saturation, obtaining a saturated solution of ethyl acetate of maleic anhydride; then immersing the hydroxylated carbon nanofiller in t...

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Abstract

The invention provides a preparation method of a reactive-type organic carbon nano filler. The preparation method includes the steps of: 1) soaking the carbon nano filler in excessive concentrated nitric acid to oxidize the carbon nano filler to obtain hydroxylated carbon nano filler; 2) soaking the hydroxylated carbon nano filler in an excessive ethyl acetate saturated solution of maleic anhydride to carry out stem grafting to obtain carboxylated carbon nano filler; and 3) soaking the carboxylated carbon nano filler in an excessive ethanol saturated solution of a polyamino small-molecule compound to carry out stem grafting to obtain the reactive-type organic carbon nano filler. The reactive-type organic carbon nano filler not only has the physical advantages of conventional nano filler, but also can participate in a curing reaction of epoxy resin. The nano filler has good dispersibility in resin and can control movement of molecular chains, so that prepared resin composite filler is excellent in mechanical performance and heat resistance.

Description

technical field [0001] The invention belongs to the technical field of preparation of nano-doped epoxy resin and composite filler, and in particular relates to a preparation method of reactive organic carbon nano-filler. Background technique [0002] With the continuous development of my country's space technology, in order to meet the urgent needs of high strength, high reliability and light weight of space structural parts, the development and application of new high-performance resin-based composite filler components are increasing. The ultra-high mechanical properties and specific surface area of ​​carbon nanofillers can effectively improve the comprehensive properties of polymers. Carbon nanofillers can form a more effective network structure in the matrix, conduct heat in time, and avoid filler decomposition caused by local heat accumulation. In addition, the carbon nanofiller itself has good heat resistance, and its thermal decomposition temperature is much higher th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K9/02C08K9/04C08K7/24C08K7/06C08G59/40
CPCC08K9/02C08G59/4021C08K7/06C08K7/24C08K9/04C08K2201/011C08L63/00
Inventor 包艳玲朱世步王百亚王秀云张晓虎
Owner XIAN AEROSPACE COMPOSITE MATERIALS INST
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