Polymer polyols, also known as vinyl polymer grafted polyether polyols, referred to as POP, are generally white or light creamy yellow in appearance. They are polyols containing organic fillers and can replace inorganic fillers. They can not only make polyurethane foam have higher load-bearing capacity and good rebound performance, but also improve the foam pore structure and physical and mechanical properties of the foam.
The different solid contents of polymer polyols are mainly reflected in the differences in physical properties, application fields and performance.
1. Physical properties: Polymer polyols with lower solid content (such as high-activity polymer polyols with 40% solid content) usually have lower viscosity and better fluidity, and are suitable for applications that require lower viscosity. Polymer polyols with higher solid content (such as polymer polyol SD-100 with 45% solid content) have higher viscosity and poorer fluidity, and are suitable for applications that require higher viscosity and stability.
2. Application fields: Low-solid-content polymer polyols are often used in fields with higher viscosity requirements, such as coatings, adhesives, etc., because of their good fluidity and easy construction and mixing. High-solid-content polymer polyols are suitable for fields with higher viscosity and stability requirements, such as high-performance foam plastics, sealing materials, etc., because of their high viscosity and good stability.
3. Performance Difference:
Low solid content polymer polyols may require more solvents or diluents during the reaction process, and the cost is relatively high, but the operation is simple.
High solid content polymer polyols reduce the use of solvents, have lower costs, and reduce the emission of volatile organic compounds (VOCs) in the final product, and have better environmental performance.