Custom/Hybrid Vinylester resin

[XJCrawler]

I bought some Vinylester resin today, the came with no instructions on how to mix it. I bought it from a local shop that has new owners and they don't know anything about composite materials. It came with 2 hardeners (Cobalt and DMA) and I have no idea what the mix ratio is

 

[Matt_E]

I'd contact the manufacturer.

 

[2010brandingo]

I'd contact the manufacturer.

x2.

 

[tomski]

Cobalt is a promoter for heat curing. Dma is for an accelerator for faster curing.

Use mekp for room temperature curing at 2%.

 

[Pablo]

I've used the same stuff made by Bondo and they use MEKP

 

[XJCrawler]

Cobalt is a promoter for heat curing. Dma is for an accelerator for faster curing.

Use mekp for room temperature curing at 2%.

Thanks, I've talked to a few different people now and the consensus seems to be 0.1% DMA and 0.1% Cobalt, then mix in 1-2% MEKP.

Is it true that if MEKP and DMA are mixed it will cause an explosion?

 

[XJCrawler]

I've used the same stuff made by Bondo and they use MEKP

The Bondo stuff is polyester resin and yes it only uses MEKP

 

[Pablo]

The Bondo stuff is polyester resin and yes it only uses MEKP

my bad...put that in the fail thread.

 

[227]

Whats the difference between Vinylester and Polyester? Everything I've used except West systems 2 part epoxy turned out to be a mistake.

 

[XJCrawler]

http://en.wikipedia.org/wiki/Vinyl_ester

Its a lot stronger than polyester and cheaper than epoxy

 

[tomski]

Whats the difference between Vinylester and Polyester? Everything I've used except West systems 2 part epoxy turned out to be a mistake.

You won't listen to me but that's OK.

 

[tomski]

Thanks, I've talked to a few different people now and the consensus seems to be 0.1% DMA and 0.1% Cobalt, then mix in 1-2% MEKP.

Is it true that if MEKP and DMA are mixed it will cause an explosion?

That's a good question. I use vinylester and only mekp in room temperature curing. But I use different catalysts for temperatures here in the desert.

 

[XJCrawler]

That's a good question. I use vinylester and only mekp in room temperature curing.

So you don't need to use DMA and Cobalt if you have a heated garage?

What brand of Vinylester do you use?

 

[tomski]

I would do a test batch before any major work. I've never used DMA and Cobalt; different processes would use them. Right now I use Composites One Vinylester Resin.