COPPER AND EPOXY OPTIONS

 

 

COPPER POWDER

EPOXY FILLER

 

copper powder pigment and marine epoxy filler additive (BUY HERE)

 

- COPPER - EPOXY TEST RESULTS -

 

copper powder

Buy Copper Powder - pigment - epoxy filler

copper powder pigment and marine epoxy filler additive Buy Here
 

 

 

Copper powder can be added to epoxies (including our ESP 155™ epoxy sealer), our traditional India Spar Varnish™, our clear water-based Water Prime™ epoxy, and our water-based acrylic sealer Bio Vee Gloss™ as a decorative pigment. Copper powder can be found in our Marine Catalog as well as in our Industrial/home Catalog.

 

copper powder


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Paul Oman, MS, MBA - Progressive Epoxy Polymers, Inc.  (floor epoxies, marine epoxies, underwater epoxies, repair epoxies)

Member: NACE (National Assoc. of Corrosion Engineers), SSPC (Soc. of Protective Coatings) - BoatUS member since 1980

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Copper powder can be added to epoxies (including our ESP 155™ epoxy sealer), our traditional India Spar Varnish™, our clear water-based Water Prime™ epoxy, and our water-based acrylic sealer Bio Vee Gloss™ as a decorative pigment. Copper powder can be found in our Marine Catalog as well as in our Industrial/home Catalog.

 

Boat owners usually add it to our Low V (tm) low viscosity, solvent free, clear epoxy.



copper powder epoxy

copper powder - epoxy boat bottom



comments from folks using the copper powder with our Low V (tm) epoxy

found in our user notes page (under Low V epoxy and copper powder)


I must have a greedy streak in me because when I learned the prices being charged for solvent thinned epoxy I wanted a piece of the ‘penetrating epoxy' market. After a few tests and evaluations, I gave up and posted what I learned at
www.epoxyproducts.com/penetrating4u.html.

I also got excited when I learned some people pay up to almost $300 for a gallon of copper filled epoxy. Wow! ($295 gallon at copperpoxy.com. - this link to Copperpoxy seems to be down as of 4/03 --- 
note the year, we've been doing this for a LONG time). Another opportunity. Once again, lots of tests and experiments. As with the penetrating epoxies, my sense of right and wrong, has gotten the better of me. I simply cannot simply add some copper to our epoxy and charge anyone a few hundred dollars for that small effort. Instead, I'll sell the copper at a fair price and let you add it to your epoxy yourself. This could literally save you hundreds of dollars while letting me sleep good at night. Copper flake/powder, purchased at 25 or 50 pounds at a time is not cheap, but only a few pounds per gallon are needed.

So how much copper do you use? What size copper? Which epoxy to use? I performed a series of experiments to find out.

The epoxy: The thinner the epoxy the better. The 41 micron copper flake we use acts like a thickener. A key issue becomes adding the copper but not getting the mixture so thick that it leaves brush or roller marks, or even becomes a paste. Obviously, the thinner the epoxy is to start with, the more copper you can add before it becomes too thick. The thicker epoxies also lack the uniform ‘new copper penny' look. With the thicker epoxies, the copper color is more like light and dark copper dots.

We are recommending our Low V epoxy for mixing with the copper.

(Low V epoxy in our marine catalog) (Low V epoxy in our industrial catalog)


We also recommend adding about a quart of Fumed Silica to the epoxy and copper. When added in bulk, fumed silica is an epoxy thickener, but when added in small amounts it provides some internal 'gel' properties to the epoxies, reducing drips and sags that are made worse by the heavy copper pigment. Note that is 'step' is very optional. If looking for a very very smooth finish don't add the fumed silica as it will provide just the smallest amount of 'filler bumps' to the mixture.

(fumed silica in our marine catalog) (fumed silica in our industrial catalog)

 


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This current page is all about:

COPPER AND EPOXY OPTIONS

Buy Copper Powder - pigment - epoxy filler

copper powder pigment and marine epoxy filler additive Buy Here



How much to use? Epoxies weight about 9 or 10 pounds per gallon. A gallon of the copper powder (not a block of solid copper) is about 8 - 9 pounds. Add between 3 - 6 pounds of copper per gallon of our Low V epoxy. Three pounds will give you a nice, coppery colored finish without brush marks. At 4 to 6 pounds of copper you will certainly leave behind brush or roller marks, but you can sand these out. Five pounds of copper per 1.5 gal unit of Low Epoxy is a common order - no feedback on there being too much or too little copper. This is enough for boats about 26 feet and smaller.

If using a medium, or standard thickness marine epoxy instead of our thin Low V epoxy, you can probably reduce the amount of copper by 20 or 30%.


Be sure to sand the finished surface so as to expose the copper that is embedded in the epoxy.


We offer a special priced Epoxy/Copper package. Find out more about this in our catalog section on fillers, (mix-ins) under Copper. (
copper in our marine catalog) (copper in our industrial catalog)

SOMETHING NEW - COPPER POWDER IN WATER BASED EPOXIES (9/2010)

Folks are now experimenting with adding copper powder to water based epoxies. Typically water based epoxies are used as primers or floor coatings. We have been testing this new 'flavor' and think it has merit.


Adding copper to a thin solvent free epoxy provides 1 or 2 coat coverage. However, short pot life and drips/sags are issues to work around. Water based epoxies have very long pot life times but go on much thinner (thus less drips and sags, easier to apply).


Results: use our Water Prime (tm) waterbased epoxy - the clear version which looks orange when mixed - and 2 - 3 pounds of copper per gallon kit of the Water Prime. Three pounds might be a bit thick/rough for some folks but fine for others. Coverage estimates are about 200 sf per epoxy/copper mix. -- this will improve with customer feedback. probably at least two, perhaps 2 coats for suitable total film thickness.

As with the copper and solvent free epoxy mix - sand before launch to expose the copper embedded in the epoxy.


(
Water Prime (tm) clear - in our marine catalog) (Water Prime (tm) clear - in our industrial catalog)



R.O. emailed Progressive Epoxy Polymers (12/20/09)
Hi,
I have been researching different options for a spring bottom painting and have come across a product advertised in XXXXXXXX Magazine. It is a two part, water born epoxy with spherical copper power for loading the paint prior to application. It is Copper Coat Anti-Fouling Paint, has EPA approval for use as a bottom paint and, according to their website ( www.xxxxxxxxxxxxxx.com) has 2 kg of copper powder per liter of paint. This translates to about 16 pounds per gallon. Have you seen this product and how difficult would it be to load one of your paints with this level of copper?
Thanks in advance. -- R.O.


Hi R.O.

Two things up front: we don't sell copper - epoxy bottom paint. We sell lots of different epoxies and we also sell a very fine copper powder (and other metal powders and epoxy thickeners/fillers). So all we can do is sell you the copper powder for you to blend, mix etc. with whatever you want. I just finished adding it to a water based acrylic to paint the roof of a birdhouse.

Secondly, I checked the website you listed (lots more on that later) - their product is not water based, but rather 'ordinary' 2 part epoxy. Not sure where you got the idea it is waterbased. From my experience, 98% of water based epoxies are only for use on floors.

The product/site you list is misleading. It is a simple basic epoxy with copper added (no problem with that) but then the marketing/sales folks got a hold of it. Lots of missing information and misleading statements. The goal isn't informed customers but rather to separate the customer from his money....

You cannot put 16 pounds of copper into a gallon of epoxy (note: copper powder - copper and air - weight about 1 pound per pint) - at about 6 - 8 pounds per gallon you start making copper putty. You cannot make a copper based coating with that much copper and they don't either. Here comes some of the misleading stuff: their sites claims 2 kg per liter of RESIN. Epoxies are 2 part products, resin and curing agent. Rather oddly on their site they don't tell you the ratio of resin to curing agent but a picture suggests it might be 1 to 1 - thus thinning the resin by half ( or worse).

Their MSDS is dated 2002 (considered out of date and invalid if over 5 years old) shows that the chemicals in the resin account for 54%-65% of the resin weight - so the other 35%-45% is the copper. That is about 3-4 pounds of copper per gallon of resin (not the blend of resin and curing agent you actually work with).

Normally a gallon of mixed epoxy has a coverage rate of about 100-200 sf per gallon. The less coverage the thicker the coating, but drips and sags become a real issue - often better to apply 2 thin coats. Anyway, I calculated their coverage rate and found it to be about 80 sf per gallon. So, it is a pretty thick product - we don't know how thick or thin the epoxy was to start with before the copper was added, but still at 80 sf per gallon, it suggests enough copper was added to make it quite thick.

They also do not mention price, so I have no idea what they want for the product but giving general retail pricing, they probably have a gallon of epoxy at about $70-$90 per gallon and perhaps $40 worth of copper. So, about $110 per gallon would be an expected price that still leaves the vendor making lots of profit.

So, bottom line --- I'm sure it is a functional mix of copper and epoxy worked out by someone who knows what is going on. However, their web site is not being very honest and open with you. It is your call if you want to do try their product.

paul oman


I bought this copper powder from you in 2003 while in New Zealand and put it on my 45' Trimaran with W@@t Epoxy. Will be in NZ this October and plan to do it again as it has worked quit well. Also put it on my AB dingy bottom. -- J 2013

more from J.:

Paul,
 
Sorry but I don't have any pictures. My computer HD crashed shortly after I did the bottom and lost a lot of photos.

 

I used W@@t epoxy with the 206 hardener. I rolled it on with foam rollers and tipped it off with foam brushes. It was far from a mirror finish, but smooth enough not to cause any extra drag. The main reason I used this system  was that I planned on ending up in Kwajalein (a military base in the Marshall Islands) where I would be working for a while (two years turned into 7 years). I knew I would probably not be able to haul the boat out again for a long time. I also put a couple coats of cheap bottom paint on the boat over the copper epoxy just to extend the time before I had to start scraping it.


The bottom paint was gone after a year. After that, I would have to scrape off the soft growth about every 2 to 4 weeks. Once in the warm waters it wasn't a big deal for me. My wife and I love the water and it was good exercise. We would get some hard growth but not unless we didn't clean it for months, which happened a lot over the 7 years since we didn't get to use the boat much. It came off easily though and it really wasn't very much. We used stainless steel drywall scrapers to clean it. They worked really well. After 9 years of scraping, the only area that is almost devoid of copper epoxy is near the waterline. This is because, obviously, it got the most aggressive scraping.

 

We quit our jobs last Sept and have been sailing around the Marshalls. We are in Fl right now visiting relatives and will be heading back to the boat in a few weeks. We will then continue on south, hopefully ending up in New Zealand by October. Once there we will haul the boat (that will be almost 10 years between haulouts-just think of the money we saved on that) and do the bottom again with the copper epoxy.

 

This time I plan to use the West layup resin (a thinner resin) and put on two thinner coats instead of one heavy one just because it's easier to do and you have a longer working time with the layup resin. I will probably also put 4 coats around the waterline, and then top it off with some cheap bottom paint. Again, the reason for the bottom paint is to get us to warmer waters before we have to start cleaning it. I don't know that this is for everyone, but we are very happy with it. With the money we save on haulouts, it's practically free. I should probably mention too, that we are a 45' Trimaran. Hence, there are very few places out in this neck of the world that we can haul. Another reason this works so good for us. In fact, I like it so much I even put it on the fiberglass hull of our AB dingy.

 

Another great advantage of this is that if you get a ding in it, you can touch it up underwater.  I patched a spot underwater about 5 years ago and it is still in great shape.

 

So I hope this helps some. If you have any additional questions I'll be happy to reply. This time I'll back up my photos sooner and send you some.
 
Take care, J


DISCLAIMER - WE SELL EPOXIES AND WE SELL COPPER POWDER. WE DO NOT SELL A COPPER EPOXY PAINT OR A URETHANE COPPER PRODUCT. BLENDING AND MIXING OUR COPPER POWDER WTIH AN EPOXY OR SOME OTHER COATING IS STRICTLY A DECISION OF THE PURCHASER. WE MAY SUGGEST HOW TO MIX, BUT ONLY AS A STARTING POINT. GETTING A SATISFACTORY BLEND IS STRICTLY TRIAL AND ERROR AND SEEMS TO BE SOMETHING DIFFERENT FOR EVERYONE WHO ATTEMPTS IT. WE RECOMMEND YOU DO NOT BLEND THESE PRODUCTS TOGETHER UNLESS YOU ARE WILLING TO EXPERIMENT AND TO ACCEPT THE CONSEQUENCES OF SUCH PERSONAL TESTING. IF YOU ARE LOOKING FOR A COPPER EPOXY BLEND THAT YOU CAN JUST OPEN THE CAN AND GO, THIS IS NOT THE PLACE NOR PRODUCTS FOR YOU.


CLICK HERE TO GOTO OUR USERNOTES SECTION: FEEDBACK FROM FOLKS WHO HAVE USED THIS AND OUR OTHER EPOXIES.
copper powder pigment on roof

Copper and our Low V epoxy used to create a copper roof on this birdhouse


A third-party reseach article on and about copper boat bottoms. Very informative and interesting, thanks to one of our customers for passing along the link - http://www.copper.org/innovations/2003/Nov2003/Cu_hull_sheathing_gg.htm




ANOTHER IDEA: ADDING THE COPPER POWDER TO AN INEXPENSIVE MARINE BOTTOM PAINT.....

Web site of someone using this copper with epoxy on a boat bottom (2/03)- CLICK HERE

 

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Buy Copper Powder - pigment - epoxy filler

copper powder pigment and marine epoxy filler additive Buy Here

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