What is PUD and polycarbodiimide crosslinking agent?
PUD stands for Polyurethane Dispersion, which is a type of polyurethane resin synthesized through a polymerization reaction using water as the dispersion medium. PUD exhibits excellent physical properties and chemical stability, and is widely used in the fields of coatings, adhesives, and printing inks. Compared to traditional solvent-based polyurethane, PUD has the advantages of being environmentally friendly, safe, easy to process, and less flammable, which has led to increasing attention and application.
Polycarbodiimide crosslinking agent, commonly known as PCDI, is a frequently used crosslinking agent with good thermal stability, mechanical strength, and chemical corrosion resistance. Polycarbodiimide plays a crucial role in PUD, as it can improve the water resistance, chemical resistance, wear resistance, hardness, and tensile strength of PUD, as well as extend its service life.
What’s the function of polycarbodiimide crosslinking agent in PUD?
The application of Polycarbodiimide crosslinking agent can significantly enhance the performance of PUD, mainly reflected in the following aspects:
Improve the hardness and wear resistance of coatings. Polycarbodiimide molecules contain multiple imine bonds that can form a crosslinked structure, making the PUD molecules form a more robust network structure, thus improving the hardness and wear resistance of the coating.
Enhance the chemical resistance and temperature resistance of coatings. Polycarbodiimide crosslinking agent can make the PUD form a tighter structure, which improves the chemical and temperature resistance of the coating, enabling it to maintain good performance in complex working environments.
Increase the adhesion and water resistance of coatings. Polycarbodiimide crosslinking agent can react with the hydroxyl and isocyanate groups in PUD to form a more robust crosslinked structure, improving the adhesion and water resistance of the coating.
Reduce the viscosity of coatings and improve their rheological properties. Polycarbodiimide crosslinking agent can lower the viscosity of coatings and improve their rheological properties, making the coating easier to apply and process.
In conclusion, the application of Polycarbodiimide crosslinking agent in PUD can significantly enhance the performance of PUD and extend its service life, which has broad application prospects. As people’s attention to environmental protection and safety continues to increase, PUD as a new type of environmentally friendly, safe, and easy-to-process coating material has a promising market. Polycarbodiimide crosslinking agent, as an important component of PUD, is also receiving increasing attention and recognition.
The HyMax CA series products are high-quality crosslinking agents independently developed and produced by our company. These products adopt advanced synthesis technology and have excellent performance and outstanding quality. They have been widely used and well received in the field of PUD. Our HyMax CA series products have high thermal stability, chemical stability, and mechanical strength, which can effectively improve the performance and extend the service life of PUD. At the same time, our products also meet environmental protection standards and are a safe and reliable coating material. If you are looking for high-quality crosslinking agents, the HyMax CA series products are definitely the choice you cannot miss.