RU2562651C2 - Nanocomposite polyarylsulphonic film material - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: invention relates to polymer film materials modified with nanocomposite compounds intended for use in electronic industry, electrical engineering and mechanical engineering. The nanocomposite polyarylsulphonic film material consists of polyarylsulphone PSF-190 and includes Cu/C or Ni/C nanoparticles with size of 90-100 nm in a polymer matrix in amount of 0.002%.

EFFECT: material has improved functional properties, particularly strength properties.

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Description

The invention relates to polymer film materials modified with nanocomposite compounds, with improved functional properties, in particular, strength characteristics, intended for use in the electronics industry, electrical engineering, and mechanical engineering.

Known polymer nanocomposite thick film, RF patent No. 2404915, B82B 3/00, publ.: November 27, 2010, obtained by molding the polymer matrix by the action of thermal energy at constant pressure on the initial polymer-containing composition modified with metal nanoparticles with a size of up to 30 nm, at In this case, the parameters of temperature, pressure and exposure time are selected from the conditions for ensuring the superplasticity threshold, the achievement of which is visually controlled.

A disadvantage of the known solution is that the uniform distribution of nanoparticles in the polymer volume is not provided, the microstructure of the film is not isotropic, therefore, such a film is not high-quality and cannot guarantee an increase in the mechanical parameters of the resulting film material.

Known polyaryl sulfone film brand PSF-T1 (TU 6365-008-07615973-12), adopted as a prototype.

The disadvantages of the known polyaryl sulfonic film material are mechanical characteristics that require improvement.

The objective of the invention is to obtain a polyaryl sulfonic film material with a uniform ordered distribution of nanoparticles in a polymer matrix with improved mechanical characteristics.

The technical essence of the proposed solution lies in the fact that the nanocomposite polyaryl sulfone film material contains Cu / C or Ni / C nanoparticles, 90-100 nm in size, in a polymer matrix in an amount of 0.002%. And the used polyarylsulfone brand PSF-190 (TU 2226-468-00209349-2010).

A nanocomposite polyaryl sulfonic film material was prepared as follows.

A suspension of a Cu / C or Ni / C nanocomposite was prepared, with a particle size of 90-100 nm, (TU 2494-001-0752163-2010), in a dimethyl sulfoxide medium.

Suspension preparation:

- mechanochemical combination, grinding in a mortar for 5 minutes with portioned addition of liquid;

- Ultrasonic treatment in an ultrasonic bath for 7 minutes.

The suspension was mixed with granular polyarylsulfone.

A uniform distribution of nanoparticles deposited on the surface of polysulfone granules in the polymer volume was carried out in the zones of the material cylinder of the extruder.

Samples of film material with different concentrations (0.002 wt.%, 0.005 wt.%, 0.01 wt.%) Of Cu / C and Ni / C nanoparticles in a polymer matrix were made by extrusion. It was experimentally found that the content of a lower concentration of nanoparticles in the polyaryl sulfone film material does not have a noticeable effect on its mechanical properties and is impractical.

Table 1 shows examples of the characteristics of compositions with different contents of copper-carbon (Cu / C) and nickel-carbon (Ni / C) nanocomposites.

No. p / p Options (prototype) PSF-190 + Cu / CHK PSF-190 + Ni / CHK 0.002% 0.005% 0.01% 0.002% 0.005% 0.01% one Melt flow rate g / 10 min (325 ° C, p = 2.16 kg) 6.9 7.2 8.8 7.56 7.5 2 Film thickness, microns 44 48 51 43 43 47 43 3 Tensile strength, MPa 56.5 70.95 77.72 78.44 74.88 78,4 78.6 four Elongation at break,% 99 143.6 41,4 24.3 99,4 91.7 18.6 5 Relative elongation of the upper yield strength,% 3.6 5.3 6.0 5.9 5.7 6.0 6.1

From the table it follows that the strength characteristics of the material has a clear advantage, compared with the prototype.

The proposed nanocomposite polyaryl sulfonic film material is easy to manufacture, technologically advanced. The increase in strength indicators will make it possible to expand the scope of its application and increase the service life of the products in which it is used.

Claims (1)

Nanocomposite polyaryl sulfone film material, characterized in that it contains Cu / C or Ni / C nanoparticles of size 90-100 nm in a polymer matrix in an amount of 0.002% and a PSF-190 grade polyarylsulfone is used.