Vinyl Ester Over Polyester

Especially when the kss panels are being bent around one way or the other.

Vinyl ester over polyester. Epoxy can be applied over polyester and vinyl ester resin for repairs etc but not vice versa vinyl ester resin. One of the key layers that has been introduced into fiberglass construction over the last 20 years has been the use of a corrosive resistant vinyl ester layer. Vinyl esters are more tolerant of stretching than polyesters. Pigment paste concentrates 9 90 51 90.

For primary bonds the wet on wet bonding is strongest between chemically compatible resins so if you re finishing with gelcoat you have to use polyester resin or. Iso polyester gelcoats 27 35 288 87. Both vinylester and polyester components have a shelf live of just months. Polyester and vinyl ester are not compatible with epoxy resin.

555 vinylester glass flake barrier coat 38 50 425 00. Vinyl ester can be used as the final coat after polyester resin to create a better water barrier. I have always wondered why kelsall with his kss flat panel construction prefers polyester to epoxy in the face of all the evidence against polyester. Vinyl ester resin falls between the polyester and epoxy resin when it comes to different characteristics and cost.

Vinyl esters shrink less on curing which means that pre release of a laminate from a mold is less significant. Vinyl ester has fewer open sites in its molecular chain. It is typically used in gas tanks boat hulls and other items that will be exposed to water or chemicals for extended periods of time. Vinyl ester resins can be formulated to perform in a variety of applications requiring increased strength over polyester resins and in many.

945 vinylester bonding compound 20 90 205 50. Structural polyester resin with fiberglass layer 4. It is important to note that of the three vinyl ester resin will provide the highest corrosion resistance temperature resistance and elongation toughness. It s great having someone so knowledgeable just one phone call email or.

For this reason vinyl ester resins and vinyl ester blended with polyester are also used extensively in the marine industry to produce an effective water resistant barrier for boat hulls and other parts. Vinyl ester resin is more resistant to solvents and water degradation. For this reason epoxy resins can be applied over polyester vinyl ester resins to achieve a chemical bond but polyester vinyl ester resins can not be applied over epoxy resin. Corrosive resistant vinyl ester resin with fiberglass layer 3.

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.