It is important to note that of the three vinyl ester resin will provide the highest corrosion resistance temperature resistance and elongation toughness.
Vinyl ester vs epoxy fairing.
80 grit sandpaper in preparation for topcoating with duratec vinyl ester fairing primer and or duratec vinyl ester primer.
Epoxy resin comes in two parts.
Duratec vinyl ester fairing primer 1799 052 blue surface and product preparation.
Has some great papers on this which i am quoting from.
To cover wood a laminate using epoxy resin and 10 oz cloth will yield a much better job than 10 oz.
The b side is typically the hardener side.
This makes them more able to absorb impact without damage.
The resin side is typically designated as the a side.
For example an epoxy resin based fairing compound contains fumed silica.
Specifically proper cure of vinyl ester resins and a 15 year study of the effective use of permeation barriers in marine composites to prevent corrosion and blistering.
Polyester and vinyl ester resins depend on a catalyst to complete the curing process.
On a broad scale of viscosity vinyl esters are midway between polyesters and epoxy resins before adding styrene.
Thinning effects workability and strength thinning reduced strength but makes it easier to brush or spray.
Using epoxy you can improve the laminate properties with a post cure almost always.
A resin such as epoxy polyester or vinyl ester a hardener for epoxy or catalyst for polyester vinyl ester for activating the resin and ensuring that it eventually cures to a hard plastic material.
It adds excellent strength rigidity adhesion water and chemical resistance.
One of the only downsides to epoxy is that it is more expensive than polyester and vinyl ester resin.
Cloth and polyester resin.
All fairing compounds also feature a filler component.
Epoxy adheres to wood much better than polyester does.
Vinylester is essentially a styrene modified epoxy resin.
Fairing compounds or putties typically contain the following.
Leveling hull surface.
Vinyl esters are more tolerant of stretching than polyesters.
Vinyl ester resin is considered a hybrid of polyester and epoxy meaning its handling characteristics properties and price generally fall just between the other two.
