Key Characteristics Which Should Be Present In Your Resin

5 Perfect Characteristics your Resin Should Have

Finding the perfect resin isn’t as easy as it may seem. Consider the different characteristics you may need before selecting one that works for you. We have taken the time to go through various aspects and inform you of the ones we think are the most important. 

You will have an idea of the manufacturing process and the final product’s intended use. Depending on your intentions, there might be other characteristics that will serve a better purpose. These specific properties are the best to have overall:

  • High Cross-linking density
  • Low Exothermic during curing
  • Excellent Corrosion Resistance 
  • Durability and heat resistance
  • Excellent Wet-out Process

There are also other factors, such as how the resin acts under certain temperatures, water absorption levels, and various strength and modulus tests, which can change your final decision. 

Now we know that finding such a product with all these characteristics is difficult. Quickly accessing a distributer is another problem. Thankfully Resin SA has branches in both Johannesburg and Pretoria with partners in Cape Town and Durban. The various distribution centres allow for ease of access to the South African regions and their respective markets.

Characteristics of Resin

High Cross-Linking Density

Cross-link density refers to the density of the chain or segments that connect two infinite parts of the polymer network. If the cross-link density is low, the result can be increasing the viscosity of polymer melt. Causing the compound to become of little practical importance due to the lack of strength. 

If you have a high cross-link density, you transform polymers into a material that displays qualities of elasticity and viscosity. Such properties usually go hand in hand with potentially high strength within the polymer. 

The production of products such as shells of kayaks, tires, and oil-based paints can be associated with the strength and elastomer (elasticity and viscosity) properties.

Low Exothermic During Curing

By having a resin which has a low exothermic output during the curing process shortens the secondary bonding time. During the production process, releasing less heat gives the ability to perform a secondary curing process without interfering with the viscosity significantly. 

This essentially allows for more reactions to take place before the release of dangerous vapours. This also causes lower shrinkage and creates less stress than high exothermic systems. 

Excellent Corrosion Resistance 

Unfortunately, escaping corrosion is almost impossible, but a high level of corrosion resistance is possible. This makes it possible for the manufacturing of tanks, pipes, and vessels, which generally contain acids, alkalis, and fuels to last longer. 

The container is protected from long term chemical exposure that is taking place every day. Ensuring the tank or vessel has an extended lifespan than it would not typically have otherwise.

Durability and Heat Resistance

Durability looks at how long a substance can withstand wear, pressure, or damage. Using a highly durable product, especially in room temperatures, ensures safety from impact and deformation before damage or breakage occurs. 

Heat resistance is a crucial element to have as it slows down the ageing process. This can include embrittlement, discolouration, and degradation. This serves well, especially concerning electrical and electronic equipment. 

Excellent Wet-Out Process

A wet-out process refers to the impregnation of fiber rovings with the thermoplastic resin during the manufacturing process. A successful wet-out process completely coats each filament. 

Choosing a resin with the correct properties allows for the wet-out process to be as efficient as possible, reducing the wastage during the process. This ultimately saves money as you are using less resin to complete the process. If there are loose fibers or other debris presents, it could cause issues during conveying.

Although these factors above are relatively the most important ones to incorporate. There are additional elements which would still be beneficial which you may want to investigate:

  • Shelf Life Duration
  • FDA Approved
  • Curing Void of DMA
  • Access to product

It would be best if you saw what elements you require for the manufacturing process, as well as a result. The final decision will still be yours. If you are uncertain about any aspects of resin, that might be more beneficial. Contact a resin specialist who will be able to answer any of your questions. Guiding you to an informed decision.

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