Investigating changes in glass transition temperature and viscosity in epoxyacrylate resin reinforced with fumed silica

In the formulation of resins, the use of suitable additives causes changes in their properties.Appropriate additives and fillers are used in accordance with the type of desired change. In somecases, we need to adjust the viscosity of a resin, and thickeners are used to increase it. Fumed Silicais one of the materials that changes the viscosity in the formulation, in addition, it makes the resinhard and scratch resistant. The results of this research showed that an increase of up to ۲% of FumedSilica increases slightly and after an increase of ۳%, there are very high changes in viscosity. Theresults of the dynamic mechanical thermal analysis showed an increase in the glass transitiontemperature from ۴۱ in the blank sample to ۵۶ in the sample containing ۴% silica.

کلیدواژه ها:

Epoxy acrylate oligomers ، Fumed silica ، UV cure resin ، Viscosity ، DMTA