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Building Materials

August 12, 2017 18:08

Drying oils, natural or vegetable oil in the finishing works

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Drying oils, natural - the advantages and disadvantages

One of the main advantages enjoyed by linseed oil, almost 100% composed of vegetable oils - the absence of solvents, making practically no characteristic pungent smell.Rapid drying of the material is achieved by the fact that its main component, that is, the oil is subjected to heat treatment, which can last up to 12 hours at temperatures up to 300 degrees.Furthermore, the content of the base component is still not 100%, of the total weight of 3% is driers, ie the input of the metals that promote the oxidation of oils and rapidly solidifying the film formation.

Let's find out what is good for drying oil, natural coloring, characteristics which are quite different from oksolem, combined and alkyd solutions - all those fluids, a large percentage of which is white spirit.Firstly, it has a specific odor, it is appropriate that the oil which is a liquid foundation.There are many types of drying oils, each of which contains one or another natural vegetable oil.The best considered

linen drying oil, it forms the most solid and durable film on the surface of the treated material .

How different varnishes on the basis of a particular oil

impregnation of wood or metal surface treatment (priming), adding to the paint to pour their best and plaster - for all this is only suitable drying oil.Interestingly, not all the natural oils on exposure to air and heat formed as a solid film solidification, some still remain viscous substance. fastest and best-drying linseed oil, and the reason for that - the highest content of polyunsaturated fatty acids, as evidenced by the high iodine number (175-204) .Almost the same performance has hemp oil with an iodine value of 145-167.

adds a varnish driers are compounds of the following metals: lithium, cobalt, iron, lead, strontium, zirconium, manganese.

As for varnishes, as part of which contains peanut, sunflower or poppy (this also happens) oil, they would dry up without driers are extremely long.Logically, the fatty acid content of these extracts from plant seeds with corresponding names relatively small.Even worse is the case with rapeseed and olive oils, they are virtually dry up, only gradually zagustevaya.A beaver linseed oil without the addition of driers never be frozen, so insignificant iodine value of its components.In addition, it should be noted that this figure is reduced as the drying.

Applying natural oil varnishes

the greatest degree of drying oil, both natural and alkyd needed in paint production, because this component is needed for the production of pastes of oil paints.The reason for this - and the composition of the above-mentioned liquids, and demands for speed pour dye products.At the same time the most popular is alkyd varnish is cheaper, which is why during the finishing works and you have to inhale the pungent smells of evaporating solvents.On the basis of natural oils are more expensive ink used by artists.

for the treatment of various surfaces, such as wood and metal primer, varnish fit perfectly.Actually, for this purpose they were invented in ancient times, however, the component composition of the "boiled oil", according to old recipes, kept still and amber, as well as other resins that are more similar to the varnish.Natural linseed oil is used strictly for internal work, it can be coated on the outside of the wooden sheds and visors.Thus, regardless of the treatment site, then it is desirable to cover the surface of the paint or plaster.

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