Ten Tips for How To Use Epoxy Resin

Ten Tips for How To Use Epoxy Resin
Ten Tips for How To Use Epoxy Resin

How to work with resin? Although epoxy resins are used in a variety of applications due to their unique properties (composites, adhesives, insulation, paint and coating, and epoxy flooring), there are points that are common to all fields and must be followed when using them. In this article, we review these points.


How To Use Epoxy Resin

1- Epoxy resin needs a curing agent to harden.

The curing agent is usually referred to as epoxy hardener. The mixing ratio of hardener and resin is determined based on the functional groups in their chemical structure, and problems arise if less or more than the required amount of epoxy hardener is used. Among these problems, the following can be mentioned:
The curing reaction of the epoxy resin remains incomplete and the product remains sticky
Excess hardener remains on the surface
Prolonging/accelerating the curing time of epoxy resin and hardener
Not reaching the required final properties of epoxy resin

2- It is necessary to add hardener to cure epoxy resin while work with resin.

In addition to respecting the mixing ratio of resin and hardener, it is very important to ensure that they are completely mixed and create a completely uniform mixture. For this purpose, it is recommended to observe the mixing time and use the appropriate tools. For example, drill mixers are used to install epoxy floors. If the mixing is not done completely, problems will appear in the final product. Among other things, some areas are not fully cured and remain sticky on the surface.

3- Another important point is observing the curing temperature of epoxy resin.

Epoxy resins exist in liquid and solid states. Meanwhile, the use of liquid epoxy resin is more common in general applications. Depending on the type of hardener used, the temperature required to perform the curing reaction is different. The curing reaction speed of epoxy resin is dependent on the temperature, and on average, for every 10°C increase in temperature, the curing speed doubles. Now, if the reaction temperature is lower than the minimum temperature required for epoxy resin curing, the reaction will not happen. For example, it is not recommended to install epoxy flooring at temperatures below 10 degrees Celsius.

4- The reaction of epoxy resin with hardener depends on temperature and takes place in a specific time.

Therefore, it should be noted that the time to work with the materials after mixing the two components is limited. This time is called pot life, and is different based on the type of product and its curing system. It is important to know the working time( pot life) of the epoxy product and not to work with the material after this time. For example, when installing epoxy flooring, after mixing the resin and hardener, you have less than an hour to apply the material on the surface and level it (the exact time is announced by the product manufacturer in its technical data sheet).

5- The speed of reaching the final properties depends on the temperature at which the reaction is carried out.

The speed of reaching its final properties also depends on the temperature at which the reaction is carried out. Although the initial curing reaction of epoxy resin takes place in the first few hours (depending on the type of product), on average, it takes about 7 days at a temperature of 25 degrees Celsius for the product to reach its final properties.

6- Epoxy resin is waterproof and impermeable.

What is less mentioned is its sensitivity to moisture and water before the curing reaction. In other words, if water is somehow added to the resin and hardener mixture (the relative humidity of the air is high, the concrete on which the epoxy floor is installed is wet, etc.), its final properties will be affected. For example, interlayer adhesion in epoxy flooring will be reduced. Of course, note that this issue applies to solvent-based epoxy resin and there is no such problem for water-based epoxy resin.

7- Tools are needed to implement products based on epoxy resin, depending on the type of product.

Many of these tools are disposable and are thrown away after use. But in the case of tools such as smoothing machine, stirrer, etc., these tools need to be washed after working with epoxy resin. Due to being impregnated with a mixture of resin and hardener, if the materials are not cleaned, they will dry on their surface and will not be usable anymore. The important point when washing tools is to use suitable solvents for epoxy resin. Epoxy thinners are commercially available and you can get them from hardware stores and paint stores.
Also read: Epoxy Flooring Equipment

     how to install epoxy floor

8- Epoxy resin, its hardener and washing thinners are all chemicals.

Therefore, while use epoxy resin it is very important to follow the safety tips based on the level of each risk. The method of working with the products and the first aid for each in case of a possible accident are included in the safety information sheet of the products. Among the general cases of these tips, we can mention the use of work clothes (up to the wrists and feet), masks (depending on the type of product) and work gloves. The work method should be such that the materials do not come into contact with the skin. In case of contact, it should be quickly removed from the skin by cleansing and washed completely with soap and water.

9- Not smoking or lighting a flame in the place where materials are stored or during their installation.

Epoxy resin and its thinner are highly flammable and even if there is a spark, there is a possibility of its flaming. In fact, even used equipment such as drill mixers should be checked for sparks to prevent accidents.
Epoxy resins are used in a wide variety of applications due to their unique properties such as high hardness and strength, excellent adhesion to all types of surfaces and creating an impermeable and waterproof surface. Observing the technical and safety points mentioned before is very important in achieving the mentioned properties. Do not forget that the safety of the employees and the employer is always a priority and the slightest negligence can lead to very large losses.

  • Date of Release:7/27/2022
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  • 8 مرداد 1401

    Dana Hamidi

    insightful piece. Thank you!

    • Thnak you