Application of fumed silica in two-component epoxy wind energy blade adhesive

By comparing the thickening thixotropy of hydrophilic fumed silica and hydrophobic fumed silica obtained after treatment of the hydrophilic type. Experimental results show that fumed silica as an inorganic thickener can effectively improve the viscosity and thixotropy of epoxy leaf glue, and hydrophobic products have better thickening effects and thixotropy.

Fumed silica, also known as fumed silica, is a new inorganic nanomaterial that is widely used in coatings and inks, adhesives and sealants, plastics, rubber, food, medicine, chemical mechanical polishing, catalyst carriers and other industries and fields. It is commonly used as thickener, thixotropic agent, anti-settling agent, anti-sagging agent, matting agent and defoaming agent in liquid systems. It can be used as anti-caking agent and flow aid in solid powder, with excellent chemical stability and thermal stability.

Two-component epoxy wind energy blade adhesive is mainly used for wind turbine blade bonding, internal electromechanical sealing, wheel hub and bearing bonding. Due to its small curing shrinkage, excellent workmanship, and good chemical stability, epoxy adhesive has become mainstream. Structural adhesives are used for wind turbine blades.

Fumed silica serves as a filler, reinforcing agent, and thickener. When added to the epoxy wind power adhesive at the recommended dosage of 6%-8%, it can improve the mechanical properties, wear resistance, and weather resistance of the rubber, which is helpful to Improve the strength and life of wind energy blades.

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