Polyurethane catalystFor relatively single polyurethane coatings, during the industrial production and application process, its appearance, There are still certain limitations in gloss, water resistance and hardness, so you can try to improve its performance level by developing modified polyurethane coatings. Under the current technical level, there are two types of modification methods that can be applied to polyurethane materials: one is through chemical intervention, so that the polyurethane coating can have two or more properties; the second is through physical methods. In the form of intervention, two or more resin materials with complementary properties are mixed, so that polyurethane coatings can have diversified properties. Among them, for silicone materials, this material has a series of characteristics and advantages such as non-corrosion, non-toxicity, flame resistance, ozone resistance, weather aging resistance, electrical insulation, etc., and is very good in the modification processing of polyurethane coatings. application value.
Polyurethane Catalyst has conducted basic research and development on polyurethane powder coatings and successfully developed a blocked isocyanate cross-linking system. The commonly used caprolactam-blocked IPDI curing system has a curing temperature above 170°C. This high-temperature curing is beneficial to coatings. The membrane is highly leveled and produces no volatile by-products. Previous reports have also pointed out that trying to combine silicone materials with polyurethane coatings and applying appropriate methods for modification processing can significantly overcome the performance defects of polyurethane materials and have very definite value in expanding the application fields of polyurethane materials. At the same time, the chemical structure of polysiloxane is relatively special, showing excellent stability, biocompatibility, electrical insulation and high and low temperature resistance. It has been widely used in industrial production practice since the 1940s. In the development process of modified polyurethane catalysts, you can try to use polysiloxane as a soft segment to synthesize polysiloxane-polyurethane block copolymer to highlight the polyurethane The advantages of both polysiloxane and polysiloxane highlight the outstanding advantages of this modified polyurethane coating in terms of surface enrichment, dielectric properties and biocompatibility, and it has very large application space and development potential.
