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Definition of two-component PU

It is a high-performance material that cures through a two-component chemical reaction. It is widely used in the fields of adhesives, coatings, sealants, etc., which
are basic
components A (main agent): usually include polyols containing hydroxyl groups (such as polyether polyols, polyester polyols) or terminal hydroxyl prepolymers.
Component B (curing agent) : Most are isocyanate compounds (such as TDI, MDI, HDI, etc.) or their modified substances, providing NCO-active groups.
Other ingredients: chain extenders (such as ethylene glycol), catalysts (such as dibutyltin dilaurate), fillers (such as silica), etc., used to adjust performance.
Currecting mechanism
After the two components are mixed, the hydroxyl group (-OH) and isocyanate group (-NCO) undergo cross-linking reaction, forming a three-dimensional network structure of polyurethane or polyurethane-urea, forming a high-strength chemical bond.

Excellent environmental protection

Using water as the dispersion medium, the volatile organic compounds (VOC) content is extremely low, complying with the EU REACH, China GB/T 23986 and other environmental protection regulations.

Adjustable flexibility

By adjusting the polyol type (polyether/polyester) and crosslinking degree, different materials from soft elastomers to hard plastics can be produced.

Suitable for a variety of materials

Wood, metal, plastic, inorganic and other substrates composite PVC, film, fabric, CPL, veneer, metal

Strong compatibility and complexity

Easy to blend with acrylic emulsions, epoxy resins, etc., and develop composite high-performance materials (such as enhanced corrosion resistance and weather resistance).

Good chemical resistance

Unmodified products already have basic chemical resistance, and the solvent resistance can be further improved by introducing crosslinking agents or hydrophobic groups.

Low unit cost

Glue coating volume saves competition among brands, and end customer revenue