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Technical Information

Asked by: Mafalda Queirós
Date: 2020-10-23 23:46:19
Is this pigment translucent? And as for the brightness, my question is due to the fact that I want a pigment for my resin that is not translucent, because I need the pieces to be really white. Thanks

Yes, this pigment is designed to achieve opaque finishes. As for the gloss, it will depend on the finish of the mold and the resin you use.

Asked by: Jorge
Date: 2020-10-25 08:51:48
Hello, the linen fabric to replace fiberglass in shipbuilding, wood-fiber, how is the equivalence of tensile or shear resistance? Thanks greetings.

Hello, logically the mechanical resistance of linen is much lower than fiberglass. In the technical sheets you can see values, for example of the tensile strength of 300 MPa, compared to more than 1000 MPa of any fiberglass. The Tensile Young's Modulus of glass is around 75 GPa, compared to 35 GPa for this flax. The advantage of linen lies in the damping capacity, acoustic properties, bio material and its aesthetic characteristics.

Asked by: Jaime
Date: 2020-10-25 21:07:05
Can I buy this liquid polyurethane and use a pressure spray gun?

PU31 is a rigid polyurethane resin designed to be applied by casting, not by spray.

Asked by: Roberto
Date: 2020-10-26 17:23:26
Hello, I have bought a bottle of topcoat to be applied with a roller and I have painted some panels of the boat and I would like to give a second coat, where I bought it I asked them and they told me to apply acetone first and to give it another coa . . .

We recommend sanding before applying a second coat. Ideally, you should do it with a thicker sandpaper, 320-400, so that it generates a good mechanical anchor. Leaving a completely mark-free finish is complex, so once that second coat is dry you will have to sand, polish and polish. At that point you can start with a 600-800 or even 1000, it all depends on how you finished.

Asked by: Rene Trowe
Date: 2020-10-26 19:09:38
I would like to paint my boat with a new gelcoat. He still has his old gelcoat completely. I want to repaint it.

A gelcoat should not be applied over an old gelcoat as it will peel off over time. Even if you sand the old gelcoat. To apply a gelcoat/topcota, you would need to remove the old gelcoat and then apply a new resin and fiber laminate. Another option  would be to sand the old gelcoat, then apply an epoxy primer and finally 2-3 coats of 100 g/m2 each of a high-resistance polyurethane paint.

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