What is polyester Gelcoat and how to use it?
Polyester Gelcoat is the product that gives a new look to the composite piece. It gives color, shine, surface hardness, resistance to weathering, water, scratching...
Do you want your pieces to have a new look? In Feroca we help you thanks to the polyester Gelcoat product to give a special finish to your new composition.
What is Polyester Gelcoat
Polyester Gelcoat, as discussed above, is a material that offers a high-quality finish on the visible surface of a composite polymeric material. It is used as a first layer of registration and then filled with polyester. It is made from isophthalic unsaturated polyester resin. It also provides a perfect finish on mold in fiber laminates.andnbsp;
It is the first layer of resin that is applied to the prepared mold, it constitutes the finish of one of the surfaces of the laminate, providing protection against chemicals, weathering, humidity or any aggression of the environment. In general, they have greater resistance to abrasion, corrosion, the action of UV radiation and temperature changes than their corresponding base resins.andnbsp;
The manufactured component, once cured and removed from the mold, presents on the surface the gelcoat layer. This is usually pigmented to provide a glossy colored surface, which enhances the aesthetic appearance and gives new life to your compositions.
Polyester Gelcoat Uses
Polyester Gelcoat is applied as the first layer, once the mold has been waxed. It allows you to obtain pieces with a perfect finish, with all the detail of the mold and with good resistance to weathering and contact with water. It can be used in the following situations:
In the automotive industry. More large pieces are finished in gelcoat both interior and exterior. For example, bus or car bumpers.andnbsp;
Construction. Certain elements are painted with gelcoat which gives more protection and a good finish (water tanks, septic tanks, transparent sheets ...).
Decoration and window dressing. Figures for interior decoration, exhibitors...
Theme parks and architectural elements. Necessary to give showiness to the attractions and achieve greater resistance to the water parks.
In repairs. It is a highly appreciated product when it comes to repairing pieces of polyester reinforced with fiberglass that contain scrapes, scratches or that are worn.
Difference between Gelcoat and Topcoat
The gelcoat and topcoat are formulated through a polyester resin, vinylester resin or a modified resin to which different products are subsequently added in the form of additives, dispersants, levelers, deaerators, ultraviolet filters and pigments that are what give them the final properties.andnbsp;
There is virtually no difference between those two products. A topcoat is simply a gelcoat to which a percentage of a paraffin solution has been added, most often paraffin styrene (10% paraffin solution).
How to apply Gelcoat Polyesterandnbsp;
The application of gelcoats is common for all natures and qualities. In the manufacture of parts with higher added value or technical requirements, the application parameters must be much more careful. The influence of these parameters is directly related to the final quality of the gelcoat layer.
Therefore,andnbsp;it is very important to be very careful with the recommendations. You must follow the step by step of our product inandnbsp;the instructions provided by its label and if you have any questions, contact our experts.
The gelcoat can be applied with a gun, roller or brush. For best results, the application with a gun is recommended, since it allows the lamination of layers of greater uniformity and thickness. In enclosed environments or places of difficult access, painter's rollers can be used as an alternative.
Gelcoat applied with a brush can present stretch marks and little uniformity in thickness, which harms the quality of the finish. The very thick layers are brittle and may have superficial crackers. Very thin layers are susceptible to wrinkle, due to the attack of styrene from the rolling resin. Therefore, you have to be very careful when applying the gelcoat with this object. If the gelcoat is applied by spraying, it can be done in one hand.
Process to create a piece of Gelcoat Polyester
1. Apply the Gelcoat on our mold
The gelcoat must be applied to our piece on a mold, either rigid or flexible. From the mold, the copy is taken out. For the first layer of records, as mentioned above, we are going to use gelcoat.andnbsp;You can add pigments of the color you want to the mixture so that it is similar to that of your piece. In this case, you can use the pigments that we offer you in Feroca.
Then, we simply have to spread it with a brush over the entire surface of the mold. We must emphasize all the nooks and crannies so that we do not have any bubble left.
2.andnbsp;Once dry, we make the polyester casting
Once dry we can make the polyester casting , following the step by step that comes on the product label.
3.andnbsp;Mix polyester resin with marble
For the filling we will mix the polyester resin with marble in equal parts. In this way we will get it to have more hardness. We are going to mix it well so that there are no lumps or bubbles and then catalyze it with the Feroca catalyst for polyester resins.
4. Mix well, let it cure and voila!
Once everything is well mixed, we make the casting and let it heal. When it is cured, we unmold it and we have already made our piece reinforced with polyester gelcoat.
The Best in Feroca Polyester Gelcoat
If you need to buy polyester gelcoat, in Feroca we offer you the best product on the market that fits all types of elaboration or repair project.
If you have any questions,andnbsp;you can contact us for more information and advice. We will be happy to assist you!