IF you know ANYthing about FIBERGLASS please read this !?

Question

I just waisted an hour of my life searching google trying to find how much fiberglass resin weights. Just a general number is all I am looking for. I attempting to figure out if a want-to-do project is cost effictive. I know you measure it 40:60. I know how much the fiberglass weights. But every source I found just tells me the liquid capacity of it, not the weight. If resin is very heavy or even semi-heavy compaired to water I may be on to something big.

Answer 1

Most resins weigh about 9-1/2 LBS per gallon.

Answer 2

1.1 - 1.2 times the density of water @25 C - cured film density of lamination/finishing epoxy resin depending on modifiers, glass cloth content etc. Will depend more on the skill and application experience of the builder. Most home lamination has excessive resin content (better than a starved surface though). Use woven glass cloth only with epoxy unless purchasing dedicated epoxy use matt. Standard matt has an adhesive added to hold the random fibres together, this can interfere significantly with the epoxy bond onto the glass fibres, and creates a future de-lamination weakness. Vinyl-ester fibre is a superior cloth should hard/sharp edges be required, standard GRP construction does not lend itself to sharp profile changes easily.



Take a small spring balance to the supplier and weight your chosen resins there. As there is no significant VOC to gas off with the quality modern epoxy resins, there is negligible weight and volume change between liquid and cured states. Weight of the plastic containers will be only a few percent of the total, metal containers may be half again the weight of the plastic containers, but overall a small amount of the total.



Weights of resins are highly variable, due to the many modifiers that can be added to the many base resins depending on the specific end use of that particular resin blend. Weighing of your chosen product in your chosen construction method is the only simple way to calculate an absolute weight for your finished item. There are many published volume/mass data sheets, given the confusions between imperial and U.S. volume measurements for a start many of these are more complicated to convert back and forth from each other, and the metric system for this forum on a day off......

Answer 3

Ok. Try this, go buy a gallon of resin and a gallon of milk.

find out if the resin is heavier than the milk.

I believe water is the lightest liquid,or the easiest thing to compare.

If your wondering how much resin weighs, keep in mind how thick the matting is.

I also believe that once resin drys,its a bit lighter