Three-phase nanometer composite polymer/inorganic nanometer particle/graphite material and its prepn

An inorganic nanoparticle and nanocomposite material technology, which is applied in the field of composite materials composed of graphite, polymer and inorganic nanoparticle and its preparation, can solve the problem of reducing the dispersibility of graphite, uneven dispersion of graphite, affecting the friction reduction performance of composite materials and Mechanical properties and other issues, to achieve the effect of improving thermal stability, solving agglomeration, and eliminating the mismatch of thermal expansion coefficients

Inactive Publication Date: 2006-05-17
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the light specific gravity of expanded graphite, although the polymer can change its specific gravity after entering the pores of expanded graphite, a good dispersion system can be obtained by mechanical dispersion before thermal curing, but graphite stratification occu

Method used

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  • Three-phase nanometer composite polymer/inorganic nanometer particle/graphite material and its prepn
  • Three-phase nanometer composite polymer/inorganic nanometer particle/graphite material and its prepn
  • Three-phase nanometer composite polymer/inorganic nanometer particle/graphite material and its prepn

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] Example 1: 100 parts of methyl methacrylate (MMA) and 0.01 part of cetyltrimethylammonium bromide were dissolved in 100 parts of chloroform (CHCl) 3 ), and then add 400 parts of Ni(NO 3 ) 2 aqueous solution, ultrasonically dispersed for 13 minutes at room temperature; then 0.05 part of expanded graphite (EG) was added, and the 2 Ultrasonic for 13 minutes under the protection, then add 480 parts of 0.2mol / L NaOH solution as a precipitant, and in N 2 Ultrasonic treatment was carried out for 30 minutes under protection; 5 parts of azobisisobutyronitrile (AIBN) was added as an initiator, reacted at 60° C. for 3 hours, filtered and washed to obtain polymethyl methacrylate / Ni(OH) 2 / Expanded graphite three-phase nanocomposites. The X-ray powder diffraction XRD pattern of the composite material is shown in figure 1 , its SEM photo, TEM photo and TG curve refer to figure 2 , image 3 , Figure 4 .

[0037] The interlayer spacing of graphite and the particle size of ino...

Example Embodiment

[0038] Embodiment 2, dissolve 100 parts of methyl acrylate and 0.05 part of sodium lauryl sulfate in 110 parts of N, N-dimethylformamide, then add 600 parts of 0.1mol / L EuCl to it 3 aqueous solution, and ultrasonically dispersed for 14 minutes at room temperature; then 0.1 part of expanded graphite (EG) was added, under N 2 Under the protection of ultrasonic for 14 minutes, then add 480 parts of 0.2mol / L NaOH solution, and under N 2 Ultrasonic treatment under protection for 32 minutes; finally adding 5.5 parts of azobisisobutyronitrile (AIBN) as an initiator, reacting at 65 ° C for 4 hours, filtering and washing to obtain polymethyl acrylate / Eu(OH) 3 / Expanded graphite three-phase nanocomposites. The X-ray powder diffraction (XRD) pattern, SEM photo, TEM photo, TG curve and TG curve of the composite material

[0039] Example 1 is basically the same.

Example Embodiment

[0040] Embodiment 3, dissolve 100 parts of aniline and 0.1 part of sodium stearate in 110 parts of N-dimethylacetamide, then add 800 parts of 0.1mol / L EuCl to it 3 aqueous solution, and ultrasonically dispersed for 15 minutes at room temperature; then 0.5 part of expanded graphite (EG) was added, under N 2 Under the protection of ultrasonic for 15 minutes, then add 500 parts of 0.2mol / L NaOH solution, and in N 2 Under the protection of ultrasonic treatment for 35 minutes; finally add 6 parts of ammonium persulfate as an initiator, react at 20 ° C for 5 hours, filter and wash to obtain polyaniline / Eu(OH) 3 / Expanded graphite three-phase nanocomposites. The X-ray powder diffraction (XRD) pattern, SEM photograph, and TG curve of the TEM photograph of the composite material are basically the same as those in Example 1.

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Abstract

The present invention discloses one kind of three-phase nanometer composite polymer/inorganic nanometer particle/expanding graphite material and its preparation process. The present invention adopts polymer as oil phase and inorganic ion aqua as water phase, and self assembles with the surfactant to form reverse micelle í‹micro reactoríŒ as template for preparing inorganic nanometer particle dispersed homogeneously inside the oil phase to form stable thermodynamic system. The system is then intercalated into between the expanding graphite for direct bulk in-situ polymerization to prepare the completely new three-phase nanometer composite polymer/inorganic nanometer particle/expanding graphite material. The preparation process of the present invention has simultaneous monomer polymerization and composite material preparation, and simplified preparation process. Therefore, the present invention has simple operation, high production efficiency, low cost and excellent product performance, and is suitable for industrial production.

Description

technical field [0001] The invention relates to a graphite composite material, in particular to a composite material composed of graphite, polymer and inorganic nanoparticles and a preparation method thereof. Background technique [0002] Graphite material, due to its abundant resources, low cost, and stable properties, is widely used as a filler for conductive polymer composites. Generally, the higher the filler content, the better the electrical conductivity of the composite material, and at the same time the mechanical properties of the material will also deteriorate, especially the brittleness of the material will increase. One way to improve the mechanical properties of materials is to fill polymer composites with ultrafine inorganic compounds. Although this method can improve its dimensional stability and rigidity, it is difficult to obtain uniform dispersion of the filler at the nanometer level by using the traditional blending method; , the existing interface modif...

Claims

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Application Information

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IPC IPC(8): C08L33/00C08F2/44C08F120/14C08F220/10C08K3/04C08K7/00
Inventor 莫尊理孙银霞陈红
Owner NORTHWEST NORMAL UNIVERSITY
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