Archive: Sep 2022

Can You Vary the Ratio of Resin to Hardener to Speed It Up or Slow It Down?

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Epoxy resin systems typically comprise of two main parts: a Part A resin and a Part B hardener. These two parts need to have the right ratio for the system to work properly. Typically, a chemist will calculate this ratio chemically to ensure a well-balanced system. With the right ratio of resin to hardener, the chemically reactive portions of the epoxy resin system will link together and cure into a strong, high-quality end product.

Other kinds of non-epoxy polymers will allow for different levels of hardener to either reduce or extend gel time. However, this isn’t the case with epoxy resin systems they require specific ratios. If you add too much hardener to an epoxy resin system, it will decelerate the curing process, leading to an improperly hardened and non-functioning product. This makes it crucial to have the right ratio of resin to hardener if you want to create an epoxy system that truly works.

Why You Should NOT Vary the Ratio

Varying the required ratio of Part A to Part B to any degree will compromise the integrity of the epoxy system, forming a weak product that performs poorly.

Epoxy systems come in different cure rates depending on the process’s specific temperature. Generally, applications with cooler environments will use a system that cures faster, while hotter environments typically implement a slow curing system. The ideal temperature range for epoxy systems normally falls between 65° F and 80° F, or 18° C and 26° C.

Before using the epoxy system for the first time, it’s often best to produce a small batch for testing to gauge how the mixing and curing process works. Doing so is a potentially critical step to take if you want to avoid expensive mistakes and inadequate cures. This is particularly the case when working with new products, working in environments with different temperatures, or if it’s your first time going through the epoxy mixing process.

Epoxy Resin Formulas

The combination of polymerization processes and chemical compounds of the epoxy resin system will influence the resulting characteristics of the formula. There are many types of formulas you may use depending on the desired characteristics.

The following are some of the core properties of epoxy resin formulas:

  • Chemical stability
  • Strong adhesive bond
  • Corrosion resistance
  • Heat resistance
  • Minimal moisture absorption
  • Reduced shrinkage after curing
  • Electrical insulation
  • Excellent fatigue and flexural strength
  • Absence of volatile organic compounds (VOCs)

Learn More

The manufacturer of the epoxy resin should include instructions disclosing the ideal resin-to-hardener ratio. When mixing the epoxy, this ratio ensures an effective epoxy system that cures properly with optimal strength and performance.

If you’re searching for the best epoxy resin solutions for your application, Copps Industries offers a selection of top-quality products. As a leading supplier of epoxy resins, we carry more than 500 epoxy products and have over 400 international customers. We understand the importance of having the right ratio for each product and can advise you on product development.

For more information about resin to hardener rations, or to get started on you epoxy resin solution, request a quote today.

Acrylic Resin vs. Epoxy Resin

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Acrylic resin is a group of thermoplastic materials derived from acrylic acid — a monomer that is reactive with other chemicals to harden. Epoxy resin is a type of thermosetting material that can be a two-part clear liquid. Both types of resins have unique properties and applications. Copps Industries is a leading provider of epoxy resins and composite materials, offering over 500 epoxy products to customers across 27 countries.

Acrylic Resin vs. Epoxy Resin

Acrylic resin is a type of thermoplastic that can be repeatedly heated and shaped. It combines acrylic polymers with dry powders, a thin liquid, methyl methacrylate monomers, and a hardener. It’s different from epoxy resin because it can be reshaped with heat for further manipulation. Acrylic resin is strong, durable, and resistant to UV damage. This makes it ideal for a variety of applications, including outdoor use.

Epoxy resin is a thermosetting material used to create hard, durable castings, coatings, and adhesive products. It comes in a liquid form that cures quickly and adheres to different substrate materials like glass, wood, stone, concrete, and metal. The liquid epoxy is combined with a chemical hardener which cures it into hardened plastic. Once the mixture is set, it cannot be remolded or reshaped. Epoxy resins are very strong and resistant to chemicals, electrical damage, and heat. This makes them ideal for use in high-stress environments and applications requiring strength and durability.

Selecting the correct resin for your application is essential for the success of your project.


Acrylic resin is a versatile material that is used in a variety of applications, including:

  • Brake lights: Acrylic resin is durable and resistant to fading, making it an ideal material for brake lights.
  • Phone screens: The material is also applied to phone screens because it’s lightweight and shatter-resistant.
  • Dentures: Acrylic also can mimic the appearance of natural teeth and is often used for dentures.

The strength and durability of epoxy make it ideal for industrial and commercial use, while its aesthetic properties make it popular for arts and crafts projects. Some of the most common uses for epoxy resin include:

  • Adhesives: Epoxy is well-suited for adhesives because it forms a strong bond and is resistant to high temperatures and chemicals. It is commonly used to adhere metal, glass, and plastic components together.
  • Industrial tools: Tools made with epoxy resin are incredibly durable and can withstand heavy use.
  • Electrical components: Epoxy resin is an insulator, making it ideal for electrical applications.
  • Repair and maintenance: Frequently used in repair and maintenance applications because it can effectively fill in cracks and gaps.
  • Artwork: Epoxy resin can be used to create beautiful artwork. It can be cast into shapes or molded into three-dimensional designs. It can also be used as a protective coating for paintings or photographs.

Resins From Copps

Copps Industries is a leading provider of resins and composite materials. We offer a wide selection of epoxy resins suitable for applications across diverse industries. Our products are of the highest quality, and we offer competitive pricing and lead times. In addition, our team is highly knowledgeable and can assist you in choosing the right resin for your project.
Contact us today to learn more about our products and services or request a quote. You can also call us at 800.672.2622.