Entropy Resins Care and Handling instructions
We created this blog post to help you get the best results for your application and to help prolong the shelf-life of the Entropy Resins line of Super Sap products.
Table of Contents
- Resin Storage
- Heating Epoxy
- Resin Crystallization
- Warm Room
- Post cure
- Measuring and Mixing
- Shaping Boards
- Why can’t I get a 5-gallon jug?
- More Questions
Resin should always be stored indoors and off the ground (not on concrete or tiled basement/shop floor) ideally in a temperature controlled environment.
For extended shelf-life, Resin and Hardener must always be kept above freezing – optimal working and storage temperatures of Epoxy and Hardeners is 20 – 30 degrees Celcius.
If heating Epoxy resins prior to usage, remember to heat the Epoxy bottle only . You do not want to heat up Hardener.
The most efficient approach to heating resin is the use of a water bath. The water should be no warmer than 35 degrees Celcius. This provides the best heat transfer to the crystallized resin and reduces the risk of damaging the container. Where a water bath is not practical, such as in drum or tote sizes, other heating techniques may be necessary.
If other types of heating devices are used, such as drum band heaters, blend the resin continually, and carefully monitor the temperature.
Regardless of the heating method you choose, exposing the resin to temperatures above the recommended 35°C can lead to adverse effects such as discoloration
Warming of resins prior to mixing and application will ensure consistency in the viscosity and improve the lamination wet-out of reinforcement fabrics.
Crystallization of epoxy resin formulations is not uncommon and in some cases is a reflection of the high-performance nature of these materials. Crystallization may present itself initially as cloudiness but can proceed to suspended crystals, sedimentation, and eventually a solid mass.
If you have a resin that has crystallized, you can completely recover the resin by heating it. Learn about the best ways to restore Crystallized resins in our Crystallized blog post.
If the temperature in your workspace is difficult to control, consider building a warm resin station or temperature controlled cabinet for the storage of your resins. This will help you to meet the manufacturers advertised pot-life and tack-free times while ensuring consistent kicks.
Although our room temp cure systems are designed not to need a post cure, all epoxies will benefit from the addition of heat as a post cure. This added heat is primarily assisting more epoxy molecules to find more hardener molecules to bond and resulting in a better cured resin, optimizing mechanical properties. This helps a material such as composites perform better but also helps in posting processing steps. As an example, post cure will allow our laminating resins to achieve a harder surface and increasing temperature resistance, which aids in a better surfacing attribute like sanding as the material will not gum up when using sandpaper. For this reason, many commercial surfboard glassing operations will add a post cure to a third epoxy glassing process. For our casting resins, the addition of a post cure will shorten the time required to demold and also add temperature resistance to a material that would normally have a low-temperature resistance if cured at room temperature only. A good rule of thumb for epoxies is “heat is your friend”, as the right amount of heat added while the resin is curing or as a post cure will always make a better result.
Measuring and Mixing
Watch our video tutorial and blog post about how to Measuring and Mixing Epoxy Resins. If your a first time user of Entropy Resins or a vet looking for new tips check out 15 Tips & Tricks for The Perfect Epoxy Resin Mix.
We have two great blog post to help those intrsted in shaping boards How to laminate a wooden surfboard with epoxy resin and Helpful sanding pad info from flexpad. Make sure to check them both out!
Why isn’t your resin NO VOCs?
There is no such thing as NO VOCs! All epoxies, resins and polyesters emit VOCs. Infact VOCs are quite prevalent. The definition reads: Volatile Organic Compounds (VOCs), are organic chemicals that have a high vapor pressure at room temperature. VOCs are numerous, varied, and ubiquitous. They include both man-made and naturally occurring chemical compounds. They are emitted from many things in our natural and man made environment, like from wood glue to baby blanket and most scents and odors have VOCs. However, the question applies to the issue that some VOCs are dangerous to human health or can cause harm to the environment. Harmful VOCs typically are not acutely toxic but have compounding long-term health effects. This is why it is a good thing to minimize your harmful VOC exposure whenever possible and why having the lowest VOC resin is important.
Our Entropy Resins (CCR CCS) have a VOC output at less than 0.79% of volume. This being the lowest VOC output we could find amongst other Resins. In comparison, other Resins and Polyesters can have VOC output at 10% by volume or more.
As a consumer, the question one should ask is what is your VOC emission factor once we have mixed epoxy and hardener. Swell publishes our VOC output on our TDS cards. Email or call us for further detail on our testing results.
Why can’t I get a 5-gallon jug?
We use to ship 5-gallon jugs but have found that the 1-gallon jug to be far better and here's why.
- Hazmat: 1 Gallon Jugs are not consided Hazmat when shipping. Which means they are less expensive to ship.
- More recyclable: 1 Gallon Jugs are easier to recycle. In most cases, they can go in your household recycling bin, unlike a 5 gallon which has to be taken to a specialized depot.
- Easy to open, easier to use: 1 Gallon Jugs have a secure but easy to use screw off lid. For even easier and more precise pouring, the lid can easily be replaced by our fitted Entropy Resins Pump Set. In contrast, precise pouring with the 5-gallon jug required you to remove the lid, and using a very sharp tool, you have to cut a hole in the lid in order to allow the attachment of the spout. Then to smooth pouring, stop the glugging, you needed to do a further cut on the jug to create an air valve.
- Less Contamination: 1 Gallon Jugs have a screw lid that can be easily replaced by our fitted Entropy Resins Pump Set, both of which ( lid and pump) are very secure and good at preventing contamination. This definitely cannot be said about the 5-Gallon set up.
- Easy to keep warm: 1 Gallon Jugs are easier to keep warm with a heat mat Resin Heat Mat. The 5-gallon jug, by its very size, is more difficult to move and more difficult to keep warm.
- Easy to pour: Even without the use of an Entropy Resins Pump Set , the 1 Gallon Jug is far easier to do precise pouring than the 5 gallon.
If you have any technical questions about your resin project call our helpline 310-882-2120. The helpline is staffed by Composite Material Engineers ready to walk you through any project . If you have questions about stock or shipping email or call us.
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