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FACTORY TECHNOLOGIES AT HOME - SIMPLE RECIPES
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Castor varnish. Simple recipes and tips

Factory technologies - simple recipes

Directory / Factory technology at home - simple recipes

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How to cook castor varnish?

Dry distillation of castor oil produces a rubbery residue which, when dissolved in hydrocarbons (gasoline) or alcohol, is an excellent, impermeable, sun-resistant, highly durable varnish.

Wool, linen, etc. smeared with this varnish. become impervious to water. When varnish is mixed with earths or metal oxides, a very strong putty is obtained.

Author: Korolev V.A.

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Structural paint 05.01.2015

Many beetles and butterflies are colored without the use of dyes - due to the fact that nanostructures are located on the surface of the elytra of the first and the wings of the second, which convert white light into colored light. If a person could learn how to apply a similar method on an industrial scale, he would get rid of the need to deal with a huge variety of substances. In addition to saving on production, the task of subsequent processing is also simplified.

A step in this direction was taken by researchers from the Technological University of Denmark, led by Asger Mortensen. With the help of structural coloring, they depicted the emblem of their institute on the polymer.

First, they made a silicon stamp from periodically spaced cylindrical pits a few tens of nanometers in diameter. Then this stamp was printed on the surface of the polymer. A layer of aluminum 20 nm thick was applied to the resulting relief, and aluminum disks 50 nm high were obtained. The image has appeared! Depending on the diameter of the disks and the distance between them, some areas turned out to be yellow, others - blue.

The protective clear coat shifted the colors to the red side, but the effect did not disappear. The main cost, of course, is the production of the die, and the rest of the processes are cheap enough to allow mass production of multi-colored polymers without ink.

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