The application of magnesium oxide in FRP thickener is mainly reflected in its thickening effect and enhancement of material properties. As a thickener, magnesium oxide can effectively adjust the viscosity of the resin system to meet the needs of subsequent processing. In the production process of FRP ( fiberglass reinforced plastic ), the choice of thickener is crucial, because too fast or too slow thickening will affect the fluidity of the material and molding effect. Magnesium oxide has become the most widely used chemical thickener because of its fast thickening speed, wide source of raw materials and other advantages.
Specific mechanism of magnesium oxide in FRP thickeners
- Thickening effect: magnesium oxide can significantly improve the viscosity of the resin system, so that it maintains a stable viscoelasticity during processing, to avoid resin loss and mold wear and other problems.
- Enhancement of material properties: Magnesium oxide not only acts as a thickener, but also increases the brightness of FRP and enhances the overall performance of the material. Using active magnesium oxide (content ≥90%, good whiteness, good dispersion, iodine absorption value of about 150) is more effective.
Application effect of different types of magnesium oxide in FRP thickener
- Ordinary magnesium oxide: Although it has thickening effect, there is the problem of too fast or too slow thickening speed, which affects the fluidity and molding effect of the material.
- Active magnesium oxide: due to its high activity, high dispersibility and good iodine absorption value, it can better control the thickening reaction and improve the overall performance and processing stability of the material.
Problems and solutions in practical application
In FRP production, there are some problems in the application of magnesium oxide, such as improper control of the thickening reaction can lead to poor material flow or mold wear. In order to solve these problems, some manufacturers have developed magnesium oxide products that can control the thickening reaction segment to enhance the molding effect and mold release of the material.
In summary, the application of magnesium oxide in FRP thickeners not only solves the thickening problem, but also significantly improves the overall performance and processing stability of the material, which is an indispensable key material in FRP production.