How to Distinguish Between Polyurea and Epoxy Grout Sealant?

In the diverse market of grout sealants, distinguishing between polyurea and epoxy variants can be challenging. Feiyang shares insights:

1. Before Application:

Experienced users can differentiate by scent; polyurea has a milder, more distinct fragrance.

Utilizing tools like pH test strips to check the alkalinity of Component A can be informative. Alkaline readings typically indicate polyurea, whereas other readings suggest different materials.

Mixing a known epoxy B component with the B component of the sealant under evaluation can reveal polyurea; a heat-generating, gel-forming reaction is indicative of polyurea.

2. During Application:

Polyurea grout cures faster, often becoming non-sticky within an hour at room temperature, and ready for excess removal in three hours. Epoxy, on the other hand, typically takes over two hours to surface dry and six hours for removal. This difference is more pronounced in low temperatures.

3. After Application:

Upon burning, polyurea produces less black smoke and burns more completely compared to epoxy, which generates significant black smoke due to incomplete combustion.

Flexibility tests, like repeated folding, also serve as an indicator. Even semi-dry flexible epoxy cannot withstand repeated folding, whereas polyurea exhibits superior flexibility, tolerating multiple folds. However, this test is not applicable to colored sand materials.

Polyurea Grout Sealant

Epoxy Grout Sealant

Feiyang has been specializing in the production of raw materials for polyaspartic coatings for 30 years and can provide polyaspartic resins, hardeners and coating formulations. Some of our polyaspartic coating formulations: Polyaspartic Coating

Feel free to contact us: marketing@feiyang.com.cn

Our products list:

• Polyaspartic Resin
• Isocyanate Hardener
• Special Chemical

Learn more polyaspartic knowledge: Polyaspartic FAQ

Shenzhen Feiyang Protech Corp., Ltd. specializes in researching and producing polyaspartic polyurea resin and other new chemical products. We are recognized as a "National Special New Key Little Giant" and a "State-level High-tech Enterprise", with more than 50 polyaspartic polyurea invention patents. We also participated in the preparation of 13 industry standards for polyaspartic polyurea materials as a leading company in this field, ranking No.1 in the Chinese market.

In the coating industry, polyaspartic polyurea is used in construction machinery, automobile, containers, fan blades, marine heavy corrosion protection, and high-end industrial and commercial floor coatings. In the adhesive field, it is mainly used in sealants, stone adhesives, electronic adhesives, film circuit packaging adhesives, and other high-end applications. In the waterproofing materials sector, it is primarily used in hydroelectric dams, water parks, building waterproofing repair materials, and other areas. In the structural materials field, it is applied to curling tracks, artificial ice skating rinks, and other structural materials.

Polyaspartic polyurea is considered a high-end new material in the strategy of manufacturing power. We have broken the foreign technology monopoly and filled the domestic market gap. Due to its comprehensive characteristics of "Environmental protection, Energy saving, and Long durability", polyaspartic polyurea can contribute to the realization of genuine carbon neutrality in the coatings, adhesives, and materials industries.

Since 2012, Feiyang polyaspartic ester resin has been supplied overseas. It has been widely used to replace Bayer's current polyaspartic system in many coating companies and has been applied in anti-corrosion and waterproofing by international coating companies.