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A modified epoxy nanocomposite material based on layered nickel silicate-coated polyaniline composite nanofibers and its preparation method

A technology of composite nanofibers and layered silicic acid, which is applied in the field of epoxy nanocomposites and its preparation, can solve the problems of decreased mechanical properties of epoxy resin materials, difficulty in preparing EP nanocomposites, difficulty in dispersing nanomaterials, etc., and achieves Effect of improving mechanical properties, large specific surface area, and improving dispersion

Active Publication Date: 2022-04-05
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nanomaterials are difficult to disperse in the EP matrix, and the filling amount of nanomaterials in the prior art is only 2% mass fraction of epoxy resin, making it difficult to prepare high-filling EP nanocomposites
Phosphorus-containing compounds are mostly low-molecular substances, and when added to epoxy resin, it is easy to cause the mechanical properties of epoxy resin materials to decline.

Method used

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  • A modified epoxy nanocomposite material based on layered nickel silicate-coated polyaniline composite nanofibers and its preparation method
  • A modified epoxy nanocomposite material based on layered nickel silicate-coated polyaniline composite nanofibers and its preparation method
  • A modified epoxy nanocomposite material based on layered nickel silicate-coated polyaniline composite nanofibers and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] S1, preparation of phytic acid (PA) doped polyaniline (PANI)

[0026] Dissolve 0.91mL of PA and 0.90mL of aniline in 5mL of deionized water successively to configure solution A; dissolve 0.57g of APS in 2mL of deionized water to configure solution B; keep stirring and keep at 0~5℃ At low temperature, slowly add solution B into solution A, and react for 30 minutes until the color of the solution changes from brown to dark green; the above solution is left at 0-5°C for 24 hours, and after several times of centrifugation, washing and drying, Vacuum drying at 60°C for 24 hours to obtain PA-doped PANI nanofibers (PA-PANI);

[0027] S2. Synthesis of NiPS@PA-PANI

[0028] At room temperature, weigh 1.0g of CTAB and dissolve it in 30ml of deionized water. After ultrasonic treatment for 10min, add 0.2g of PA-PANI. After 30min of ultrasonic treatment to disperse, add 80ml of absolute ethanol and continue ultrasonic treatment for 30min; Measure 2ml of NH 3 ·H 2 O was added to ...

Embodiment 2

[0032] Example 2: S1-S2 is the same as Example 1, the difference is that the amount of NiPS@PA-PANI powder in S3 is 0.6g, the amount of epoxy resin is 15.42g, and the amount of DDM is 3.98g.

Embodiment 3

[0033] Example 3: S1-S2 is the same as Example 1, the difference is that the amount of NiPS@PA-PANI powder in S3 is 1.00g, the amount of epoxy resin is 15.10g, and the amount of DDM is 3.90g.

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Abstract

The invention discloses a preparation method of layered nickel silicate-coated polyaniline composite nanofibers, comprising: reacting phytic acid, aniline and ammonium persulfate in a certain ratio to obtain phytic acid-doped modified polyaniline nanofibers, Further, a large amount of layered nickel silicate nanomaterials are loaded on the surface of the modified polyaniline nanofibers by hydrothermal method, and the layered nickel silicate-coated polyaniline composite nanofibers with a core-shell structure are obtained after centrifugation, washing and drying; The invention also discloses a preparation method of an epoxy resin composite material containing layered nickel silicate coated polyaniline composite nanofibers. The layered nickel silicate-coated polyaniline composite nanofibers with a core-shell structure disclosed by the present invention can not only disperse the polyaniline nanofibers uniformly in the epoxy matrix, improve the mechanical properties, but also significantly reduce the wear rate of the material and inhibit Combustion can be used to prepare epoxy nanocomposites with high wear resistance and good flame retardancy.

Description

technical field [0001] The invention relates to an epoxy nanocomposite material of nanofibers and a preparation method thereof, in particular to a modified epoxy nanocomposite material based on layered nickel silicate coated polyaniline composite nanofibers and a preparation method thereof. Background technique [0002] Epoxy resin, referred to as EP, is a thermosetting resin with excellent comprehensive properties. It is very popular in aerospace, transportation, corrosion and anti-corrosion and civil fields, especially as a matrix material for high-performance composite materials. However, the shortcomings of EP itself, which are flammable and non-wearable, limit its service performance to a large extent, and even cause safety accidents. Therefore, improving the anti-wear ability and flame retardancy of EP is of great significance for further expanding the application field of EP products. Studies at home and abroad have shown that by introducing hard nanoparticles into t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L79/02C08K9/12C08K7/00C08K3/34
CPCC08L63/00C08L2205/16C08L2201/02C08L79/02C08K9/12C08K7/00C08K3/34
Inventor 杨继年蒋柳徐煜轩冯雪松
Owner ANHUI UNIV OF SCI & TECH
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