SU358653A1 - LIBRARY ' - Google Patents
LIBRARY 'Info
- Publication number
- SU358653A1 SU358653A1 SU1602009A SU1602009A SU358653A1 SU 358653 A1 SU358653 A1 SU 358653A1 SU 1602009 A SU1602009 A SU 1602009A SU 1602009 A SU1602009 A SU 1602009A SU 358653 A1 SU358653 A1 SU 358653A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- determining
- intermediate layer
- polyvinyl
- library
- material under
- Prior art date
Links
- 239000000463 material Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 229920002554 vinyl polymer Polymers 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Description
Изобретение относитс к способам определени диффузионной проницаемости полимерных материалов, например покрытий, при действии жидких сред и может быть использовано при испытании лакокрасочных покрытий и полимерно-конструкционных материалов.The invention relates to methods for determining the diffusion permeability of polymeric materials, for example coatings, under the action of liquid media and can be used in testing paint coatings and polymeric structural materials.
Известен способ определени диффузионной проницаемости полимерных материалов при действии жидких сред путем определени электросопротивлени заключенного между подложкой и испытываемым материалом промежуточного сло магни . Такой способ недостаточно точен, так как показани сопротивлени металла искажаютс вследствие возникновени дополнительного электропровод щего сло на границе пленка-напыленный металл в момент прохождени электролита через исследуемый материал.A method is known for determining the diffusion permeability of polymeric materials under the action of liquid media by determining the electrical resistivity of the enclosed between the substrate and the material under test of the intermediate layer of magnesium. This method is not accurate enough, since the readings of the metal are distorted due to the appearance of an additional electrically conductive layer at the film-sprayed metal interface at the time the electrolyte passes through the material under study.
С целью повышени точности измерени по предлагаемому способу промежуточный слой выполнен из поливинилового спирта.In order to improve the measurement accuracy of the proposed method, the intermediate layer is made of polyvinyl alcohol.
Предлагаемый способ позвол ет с достаточной точностью определить проницаемость жидких нейтральных электропровод щих сред.The proposed method allows determining with sufficient accuracy the permeability of liquid neutral electrically conductive media.
Способ осуществл ют следующим образом.The method is carried out as follows.
Па электроизол ционную подложку нанос т поливиниловую пленку толщиной 80 мк, а на нее - исследуемый изолирующий материал , например лакокрасочное покрытие. Затем подключают поливиниловую пленку к тераомметру Е-6-3 и замер ют ее начальное электросопротивление. На подготовленный таким способом образец со стороны исследуемого покрыти воздействуют жидкой средой. В момент соприкосновени среды с поливиниловой пленкой электросопротивление последней резко падает, что фиксируетс прибором. Коэффициент диффузии рассчитываетс по известным формулам.A polyvinyl film with a thickness of 80 microns is applied to the electrically insulating substrate, and the insulating material under study, for example, a paint and varnish coating, is applied to it. Then the polyvinyl film is connected to teraohmmeter E-6-3 and its initial electrical resistance is measured. A sample prepared in this way is treated with a liquid medium from the side of the test coating. At the moment of contact of the medium with the polyvinyl film, the electrical resistance of the latter drops sharply, which is fixed by the device. The diffusion coefficient is calculated using known formulas.
Предмет изобретени Subject invention
Способ определени диффузионной проницаемости полимерных материалов при действии жидких сред путем определени электросопротивлени промежуточного сло , размещенного между подложкой и испытываемым материалом, отличающийс тем, что, с целью повышени точности измерени , промежуточный слой выполнен из поливинилового снирта.The method for determining the diffusion permeability of polymeric materials under the action of liquid media by determining the electrical resistance of the intermediate layer placed between the substrate and the material under test, characterized in that, in order to improve the measurement accuracy, the intermediate layer is made of polyvinyl strip.
Publications (1)
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SU358653A1 true SU358653A1 (en) |
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