Diluents
Diluents Features for Polyester Resins
The choice of the reactive diluent in polyester resins is a crucial aspect in the formulation of the product. Diluents allow for the adjustment of the viscosity and reactivity of the final compound. Depending on its nature and the percentage included in the formulation, the solvent imparts different characteristics to the resin based on the application requirements.
Various types of diluents can be added to polyester resin depending on the formulation, allowing for the regulation of viscosity levels. Among the main solvents used are styrene, Methyl Methacrylate (MMA), Alphamethylstyrene (AMS), and Xylene. The use of methacrylate-based diluents is recommended for correcting viscosity in styrene-free or Low Styrene Content formulations.
- Viscosity Reduction: Diluents are selected based on their ability to reduce the viscosity of the formulation, commonly referred to as "cutting" the resin. The modification of viscosity is aimed at achieving precise rheological characteristics, ensuring that the product is easy to use and has the right properties for its intended application.
- Controlled Curing Time: Diluents can also be used to control the curing time of resins, as their structure contains functional groups capable of reacting, thereby promoting the polymerization reaction.