Monday, February 24, 2014

Silicone stearic acid and Teflon: Both are very inert polymers, ie unreactive with other substances


The post about fluoride grip waxes and post comments with Koldo, took us to the ever mysterious and enigmatic of additives in the wax spot. Let's stearic acid see if we can make some sense of this cumbersome issue.
The waxes are composed primarily of a mixture of waxes and resins in different proportions. This ratio along with different characteristics, also different from the resins used, conferring different waxes its viscosity and hardness properties, stearic acid which make them suitable for the type according to which temperature of snow. Manufacturers are careful to make public these formulations secret, of course.
In addition, Teflon, Graphite, Molybdenum, Gallium, Silicon, Fluorine, etc ... are substances (announced with fanfare by the manufacturer) that often incorporate a certain amount of these waxes and have come to extend the choice of additives before limited almost exclusively to Silver. It is assumed that the function of improving qualities of the wax is sought with these additives acts primarily through three mechanisms: lubrication, the hydrophobic effect and the electrical conductivity. Different substances have a more marked effect in other aspects and can be found both as waxes slip grip. Fluorine will have already spent a couple stearic acid of articles in cvcfondo and graphite, widely used, we will devote another shortly. Let's take a look at Gallium, Molybdenum, Teflon and silicone.
Gallium and Molybdenum: Both are, as we say, metals good conductors, and are used in waxes to discharge static electricity so that this dirt in the snow does not stick so much. In our setting, the dirt is a problem concerning affects especially in spring, when the melting and evaporation will concentrate the amount of particles in the snow that remains. This makes us see this problem generally associated with waxes tube. The powder snow to skied on the mountain, in winter, on the other hand is usually pretty clean snow (unless it is mixed, the effect of the machine, with old dirty snow). In other places, however, often skiing at sea level, stearic acid close to the cities and snow that may be dirty due to pollution. This causes the repulsion of the dirt is a constant concern of manufacturers, also wax pot.
In addition to improving the conductivity of the waxes, both metals disulfide stearic acid has a lubricating effect, which makes it suitable for use in sliding waxes both dry and wet snow. The main benefit we can get from these two additives is that over long distances, stearic acid the wax is gripping or slipping, will have better performance, it will "dull" less due to the dirt track.
Silicone stearic acid and Teflon: Both are very inert polymers, ie unreactive with other substances and in addition, good electrical insulators. Teflon is a fluorocarbon (having fluorine stearic acid in the molecule) and is one of the materials which provides a lower coefficient of friction, however silicones are polymers of silicon.
These substances produce lubrication so that they are unreactive with neighboring molecules, i.e., reducing friction. Thus operate completely different from graphite, which is a self-lubricating solid due to its peculiar structure in layers sliding. Being bad drivers, stearic acid do not prevent the accumulation of dirt. Its low reactivity also makes them hydrophobic but not feel a special revulsion water specifically, at least no more than to other substances.
Mixed with paraffin or gel or liquid applied, improve gliding short distances, but not repel dirt, do not improve the performance stearic acid of other waxes over long distances. Some believe even they tend to collect more dirt for themselves.
In short, in short races, our waxes slip could benefit from the inclusion of silicones or Teflon in composition, whereas in long runs, waxes, both gripping and sliding, can benefit from the inclusion of gallium stearic acid or molybdenum.
If (1)
2 varies depending stearic acid on the compound. Fluorocarbons in general, as discussed for the Teflon (polytetrafluoroethylene), are nothing reagents and this gives them a low coefficient of friction that acts as a lubricant.
(A polymer is a large molecule composed of repeating chain of smaller molecule stearic acid or monomer, which can be hung atoms of different elements, or have different architectures turn, giving it very different characteristics. A fluorocarbon is a molecule with a long backbone units consisting of carbon and fluorine, but

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