What are the five evolution of wood flooring sealant?

As an important part of wood flooring installation, wood flooring glue has experienced the evolution of solvent type, emulsion type, two-component polyurethane type, single-component polyurethane type and ms wood flooring sealant.

1.The first generation of wood floor glue - solvent type

The inherent defects of solvent-based products are basically similar: in the construction, the solvent is harmful to human body; Cause pollution to the environment; Indoor environmental emissions exceed the standard; Flammable, inconvenient to transport, etc. Limited to the chemical industry technology of the year, the mechanical properties of such products are general, so there is no bright spot.

2.The second generation of wood floor glue - emulsion type

This kind of product has low emission, no special protection is required in use, and the emission of hazardous substances can reach the European EC-1 level. However, this kind of product is water-based, contains a lot of water, and the adhesion is general, not suitable for moisture sensitive wood, only suitable for small square parched wood flooring.

3.The third generation of wood flooring glue - two component polyurethane type

This kind of product has excellent bond strength, less harmful substances, basically no physical and chemical hazards after curing, harmful emissions can reach the European EC-1R ultra-low emission level. It is suitable for all solid wood flooring, solid wood composite flooring (including high-grade two-layer, three-layer solid wood composite flooring), parquet flooring, bamboo flooring, etc.

The disadvantage is that this is a two-component product, the use of inconvenient, must use an electric mixer to stir evenly before use, and the mixing of the adhesive must be used within 10-20 minutes, such as a small amount of mixing need to be weighed with measuring tools. In addition, the B component is diphenylmethane diisocyanate (MDI), which is a low-toxicity substance and harmful to construction personnel. The site environment must be ventilated.

4.The fourth generation wood flooring glue - one component polyurethane

The main component of this kind of product is NCO sealed polyurethane prepolymer, which is ready to use, easy to use, harmful emissions can reach the level of European EC-1R ultra-low emission, minimal harm to construction personnel.The product has many advantages, such as excellent mechanical properties, high bond strength, suitable for all wood flooring, including solid wood flooring, multilayer solid wood composite flooring, parquet flooring, bamboo flooring, etc.The disadvantage is that the product generally does not have a long shelf life. The curing mechanism of such products is moisture curing, so the packaging must be very sealed to prevent moisture. Even so, the storage time at high temperatures is relatively short, typically only six months.

5.The fifth generation of wood flooring glue - MS wood flooring sealant

This kind of product has excellent mechanical properties, good weather resistance, good high temperature resistance, single component wet consolidation type, ready to use. Ultra-low emission, can meet the latest European Union EC-1RPlus standards. When cured, the product emits only a small amount of methanol or ethanol vapor and a small amount of water vapor, making it the most environmentally friendly indoor adhesive in the world.