Applying water to check tight beading on surface.

Hey guys what is the best way to apply water onto surface after applying lsp a week or two later to check for tight beading, surface tension? Any information on this will be welcomed thanks..:applause2:

 

i use a hose, but I make it so it is under high pressure and it kind mists ..sorry i'm not more help

 

If you want to do it before you wash- just spray the water into the air so it comes down on the car like rain.
If you want to do it just in the garage for the heck of it- get a little spray bottle, I use one of the 3.5oz (or something like that) travel sized spray bottle so the mist is very fine opposed to a bigger bottle that we use for detailing.

 

yea, that would do it lol.

 

What is the way to judge retention on surface? water sheeting or tight beads?:applause2:

 

Use a watering can.

 

Water beading

[: convex beads that have a small, tight symmetrical shape due to cohesion] [1]
Although you cannot equate a products beading ability to protection and durability, if an applied product continues to `bead' water, one wash after another, then that would prove that whatever it is that is causing high surface tension is not washing off.
How can you tell when a paint surface protection has diminished to a point that it is no longer being protected?

Scientific explanation

• Water (H2O) is a polar molecule, composed of two hydrogen (H2) atoms bonded to a single oxygen (O2) atom. Water molecules adhere to each other, this is called cohesion.
• Water molecules also can be attracted to other substances, such as metal or dirt, especially if they have some static charge on them, this is called adhesion.
• Some substances are not attracted to water, and even repel it. These include oils, fats and waxes; these are called non-polar substances.
• When water falls on an un-waxed paint surface, the forces of adhesion and cohesion are almost in equilibrium, and the water spreads out

A wax or sealant, when applied properly to a clean paint surface, fills in the larger surface fissures and layers the whole surface. The chemical structure of the wax prevents water from penetrating to the surface of the car. Because the wax itself is hydrophobic (literally repels water), the forces of adhesion are much less than the forces of cohesion. So, water is more likely to bead higher and rounder than on a surface without wax / sealant

Non-scientific explanations

a) If the paint surface feels dry (your hand or a cloth drags), it’s an indication that there’s nothing left between you and the paint finish. Glazes, waxes and polymer’s create a finish with less friction (surface tension) than the paint itself.

b) A suggestion from a polymer product manufacturer [To test your wax / sealant you must measure the water beading of your paint (height, contact angle and diameter) without any polish/wax applied Next, measure the water beading of your paint (height, contact angle and diameter) within 24 hours after initially applying your polish/wax. This is your starting point. This will also be the gauge for determining the water beading (longevity, duration and changes) for that specific product.

As the water beads start to diminish (get wider and shallower with a diminished s contact angle), the polish/wax and its film protection factor is going away, Once the water beading is the same as before you apply your product, the polish/wax and its protection are gone] [Sal Zaino]

Conclusion- water beading is indicative but not conclusive proof of protection
Note - durability can fluctuate dependent upon environmental conditions and the products used between waxing/sealing (quick detailer (QD) car wash concentrate that contains a wax, spray wax, etc)



An extract from “ Durability and Water Beading “, one of a series of 120 technical papers “The Science of Detailing”, a library of educational materials that has become the #1 reference for car care and a definitive and unbiased source for knowledge and information on detailing products and methodologies on the Internet

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Wow so information there, thanks wll look into it further, im comparing Merzerna Power lock against Rubbish Boys Rain Forest soft wax on beading, been 3 weeks now..Thanks will update on this in another week..:applause2: