PU adhesive is a polymeric synthetic material with polyurethane (PU) as its main component. Its core characteristic is the formation of a strong, elastic structure through the chemical reaction of polyols and isocyanates, combining the high strength of plastics with the high elasticity of rubber. Below is a detailed analysis of PU adhesive:
Chemical Properties
Main chain contains urethane groups (-NHCOO-), forming a three-dimensional cross-linked network after curing.
Effective component content is typically ≥98% (e.g., the 100% pure resin system you inquired about).
Typical viscosity range: 150-300 cps (product parameter is 175 cps), suitable for precision coating.
Physical Properties
Shear strength can reach 26 MPa (exceeding most epoxy resins).
Operating temperature: -40℃ to +100℃ (product parameter upper limit 100℃).
Curing time is staged: surface dry in 0.5 minutes (active period), complete curing in 24 hours.
