Characteristics of polyurethane adhesive
In addition to the synthesis of high performance waterborne polyurethane, the choice of membrane additives is also very important.The polyurethane prepolymer is mainly composed of oligomers, polyols and diisocyanate. Oligomer polyols are usually divided into polyether and polyester polyol by two kinds of polyether polyols prepared by prepolymer has good hydrolytic stability, good flexibility and extensibility, and good low temperature resistance; while the polyester polyol prepolymer internal cohesion, high bonding strength.
Kenuo chemical polyurethane adhesive with high solid content, low viscosity, technology applicability, strong adhesive, non-toxic is suitable for aluminum foil, polyethylene (OPA) pretreated (HDPE, LDPE) (OPP, CPP), polypropylene, polyester, polyamide (PET) (PA, ONY) thin film. Metallized film, glass paper between the composite two-component solvent based polyurethane adhesive.
High performance waterborne polyurethane adhesive has the following characteristics:(1) good resistance to water and medium.(2) high bonding strength and high initial adhesive force.(3) good storage stability.(4) freeze thaw resistance, high temperature resistance.(5) the drying rate is fast and the film formation is good at low ambient temperature.(6) good construction technology.
