how to thin polyester resin with acetone

When preparing to perform a repair, you must mix the proper ratio of hardener to polyester resin to prevent the resin from failing to cure properly. As a thin primer coat, we eventually found that lacquer sealers worked better than diluted resin. I would say that once the board is cured (99%), Acetone wouldn't have much effect on it. The also reduced the fire/explosion hazard somewhat by air-drying, rather than curing by generating heat as resin mixes do. If using epoxy you must measure both the resin and catalyst so two measuring containers may be required. Epoxy Resin. Polyester resin can be thinned out using no more than 10 percent acetone. I said exceptions might prove your rule, and I also said I use epoxy. Polyester resin can be thinned out using no more than 10 percent acetone. If you want to give the resin extra time to cure, make sure it stays warm and give it another two to seven days to fully cure. I Catalyze it with MEK. I thin it with Acetone. What is the coverage for gelcoat? Put on a respirator and a pair of rubber gloves. I left most of the resin left in the cup but I trickled some onto a polypropylene sheet to see how the resin would cure in small/thin amounts and to test whether polypropylene would be a … It will however evaporate out of the epoxy faster than the alcohol.-- To reply by email: vhoward1122 at gmail dot com Dec 02, 2010, 05:35 PM #4; M-M M-M Guest. Again, before you can go in with your sealant, you need to prep your surface. The other thing to consider is that thinned epoxy has WAY less structural value than unthinned. Resin is the large container; catalyst the small container. Polyester resin is recommended for use with fiberglass repairs that are above the water line on boats and also on other dry-surface fiberglass forms such as auto bodies and models. Recommend over acetone and other solvents. Damp boards will cause the fibreglass to delaminate, also avoid doing this at sunrise to avoid any damp air. Different capacities are best measured by different units. A preferred solvent mixture comprises the alkylene carbonate and tetramethylene urea. Most strong acids can dissolve polyester resin, but they have little to no impact on epoxy resin. Which spray gun nozzle size should I use to apply gelcoat? They don't use styrene as a thinner because it upsets the composition of the resin. Mix it "pure" first and let it set for a bit and then add the alcohol or acetone. So, if you have 10 gallons of epoxy resin, then thin it using one gallon of paint thinner or acetone. How do I know if my boat is coated with paint or gelcoat? Consequently, can I thin epoxy resin? Tools & Materials. I read on a few boat building blogs that you can cut the resin with acetone to thin it out. In the case of soil thin section production the most widely used resin is polyester (Polylite 32032-00). Acetone is most often used for cleaning resins such as polyester and epoxy resin off brushes, laminating rollers, shears and other tools. Tools. Epoxy resin is said to be better but for me it all came down to price and availability. If you are going to thin Gloss you would use Styrene or Acetone.. it's been my experience that Reichold Gloss resin thickens when not in use. I shoot hot. Any more and the fiberglass will not completely harden. Cite. Could you please specify how to do that? Mix one part polyester resin with four to six parts acetone in the 5-gallon bucket. Any more and the fiberglass will not completely harden. I also add a cap full of Surface Agent. Test either acetone or alcohol well before relying on it. Industrial grade pure acetone solvent for a wide range of uses including cleaning, degreasing & dissolving. Epoxy Resin & Hardener. So, I dissolved it into Acetone and tried to dissolve the polyester fiber in that solution. How to Thin Polyester Fiberglass Resin With Acetone | eHow.com Polyester resin is the most commonly used type of resin and the cheapest. The Resin I used polyester resin found common in auto stores. You can use more or less catalyst to change the amount of time it takes to harden but don’t use much less than 2 percent. Polylite is relatively cheap, can easily be thinned with acetone and the curing time is long enough to allow complete impregnation. I realize that, it's got to be a tough way to make a living. Thinning resin Oldred, I am assuming and that gets me in trouble.. that this is polyester resin that you are using..if it is use acetone to thin with. Tip. An example would be if you had 32 ounces of epoxy that you were mixing you would only add up to 3.2 ounces of acetone to that mixture. How to prevent gelcoat blisters; Do you have any tips for applying gelcoat by brush/roller? Click to see full answer. If you are using a polyester resin only the resin needs to be measured; the catalyst is a few drops of liquid. I have some cured pieces of hard resin/glass laying around, next time I think of it, I'll put a piece in a jar of acetone and let is sit a week and see what happens. da Rock: 10-16-2007 04:49 PM: RE: Thinning polyester resin? For instance cured fibreglass resin can be removed from tools or substrates in this manner. Examine your workspace for any hardened polyester resin and apply acetone to these areas as well. It can be normal for some resins, when poured in a thin layer, to be bendy. The fumes were still terrible though, even with a good mask. It will compromise the properties of the cured system. You should still be able to easily feel the texture of the wood or concrete. Cured polyester resin can be dissolved by solvent mixtures containing alkylene carbonates, preferably ethylene carbonate or propylene carbonate, as co-solvents. Step 6 Dispose of the rags or soak them in acetone to remove the polyester resin. Or you can thin it with acetone. Matching Game. Some resins, especially doming resins, can be flexible after the full cure time. Gloves and Eye wear with roller (at top). If you’re working with weathered wood, use fine-grit sandpaper to get rid of any imperfections. The concentration of the acid has a direct impact on whether it dissolves the resin and at what rate. How do you get resin out of polyester? Normal off-the-shelf 2-part epoxy will thin with isopropyl alcohol, but you have to be VERY careful to add and mix in drops, not squirts. Your child can practice which is the most appropriate measure for different substances by sorting out picture cards and matching them to the appropriate measuring tool. I know they use styrene for a thinner as one option. They use acetone for thinning thick resin, they say that it evaporates before the resin cures. What is the cure time for TotalBoat Gelcoat without wax? thin it first then mix the catalyst..this will probably slow the cure on it so use no more thinner thatn you absolutely have to... Warming the material helps to thin it as well..warming will acellerate cure so be ready for that.. No noticeable smell. Catalyst . Resin is a thick fiberglass liquid that when mixed with 2 percent catalyst becomes a solid. The general rule of thumb is to mix in thinner at a ratio of 10 to one. When using acetone or paint thinner for thinning epoxy, the general rule of thumb is a maximum of 10% added to the epoxy resin. Examine your workspace for any hardened polyester resin and apply acetone to these areas as well. Re: Styrene vs Acetone for thinning Polyester Laminating Resin I use both,good thing about using acetone is,once your resin is thin out,applyed,the acetone evaporats out abit,letting the resin to cure faster.
The plywood you planning on using is ok.It will be pine,but ok.You didn't say what type of boat you have.3/4" can and will be very heavy for a small boat.1/2",glassed might be better. Re: Can you thin expoxy and what would you thin it with. Your final coat should be done with waxed or finishing resin. I thin epoxy with acetone. If the acetone has no effect on the resin once it has set, you will need to use another solvent to weaken the resin bond, such as trichloroethane. Polyester resin also is used for gel coat, which is fiberglass paint that has to be thinned for spray application. How to Thin Polyester Fiberglass Resin With Acetone – Polyester resin is the most commonly used type of resin and the cheapest. This resin has a number of advantages, and some disadvantages. All Answers (6) 13th Jan, 2017. Polyester resin combined with wood is a frequent offender in boats of a certain age, and it's rarely a quick or inexpensive thing to fix. Material is colourless compared to my usual GP polyester resin.. clear, though not quite water-clear. Do NOT use acetone to thin down polyester resin based fillers!! If any wet resin remains, treat with acetone again. Using polyester resin for an application such as a glass fibre roof covering can generally be used as follows. Fill a small bucket 3/4 of the way full with polyester resin using a measuring cup. Strong acids include acetic acid, carbolic acid, hydrochloric acid, nitric acid and sulfuric acid. You have to mix the resin and acetone together to create your finish. First step must be to only attempt this job on a dry day with the surface your applying the resin to dry as well as any boards being laid down first. Applying a Polyester Resin and Acetone. You're not looking for any thick buildup of resin here, but more appropriately, the thinnest (least brittle) amount you can. It did not work. Resins have a so-called green stage (polyurethane having a longer one than polyester) when the thinner sections of the resin remain quite flexible. Add the catalyst (the catalyst comes with the resin) according to the instructions, as if the catalyst were the polyester resin. Not sure what a polyester resin would thin best with of those two choices. 1 / 5. > resin. Wipe up the surface with another clean rag. Available to buy online in 500ml and 1L tins. Acetone is Epoxy glue and resin thinner. Clean the surface well before you start applying the coats. Done dilution with acetone, seems to inhibit the cure a bit especially when the resin layer is thinner. Does polyester resin have UV stability? Been quite successful adding styrene (most resin is about 1/3 styrene, but it evaporates out when allowed to sit) and also using heat, letting the resin pail get up around 100F (38C) for about an hour. Fillers and resin should be thinned using a resin promoted with the same chemistry as its base resin. Denatured Alcohol . When finished, save the used acetone for another project. I never have any problem with it provided I work fast. This can be taken advantage of .. let’s say it’s been 20-30mins since pouring .. for going round the mould edge with a scalpel or fine wooden modelling tool and peeling away anything that’s crept over the line. That's fine if you want to accelerate the reaction that sets up the resin, not so great if you actually need to handle the resin longer. At least as hot as I would a Hot Coat. Thinning resin for adjusting the viscosity on filler (polyester) that use a cream hardener to activate. It's a good few years since I did any serious resin work, can somone bring me up to date please. All you've done is get the acetone to draw the resin into the pores of the wood, or whatever material you are waterproofing. This resin is design to thin out Poly-Filler and other Fillers that cure-out with Benzoyl Peroxide Hardeners (BPO) Cream Hardeners. Acetone or Paint Thinner.

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