Intermediate-high temperature acid-corrosion-resisting glass fiber treating compound and preparation method thereof

Abstract

The invention relates to an intermediate-high temperature acid-corrosion-resisting glass fiber treating compound and a preparation method thereof. The method comprises the following steps: putting bisphenol-A epoxy resin and benzoyl peroxide into a flask, and carrying out stirring and rising temperature; then dropwise adding methacrylic acid, and preserving heat; cooling the obtained product, adding paraxylene and dibutyltin dilaurate to continue to stir, dropwise adding vinyltriethoxysilane, and preserving heat to obtain a pale yellow modified epoxy resin prepolymer; adding deionized water and emulsifier into the flask, and then carrying out full stirring and heating for dissolving; adding the modified epoxy resin prepolymer slowly, and continuing to stir after dropwise adding; rapidly cooling the obtained film former emulsion to room temperature, then mixing the film former emulsion, a coupling agent, nanosilicon dioxide, a lubricating agent and an antistatic agent so as to obtain the glass fiber treating compound. The method has the benefit that the temperature resistance of a film former is improved. The treating compound can improve the performance retention rate of glass fiber reinforced plastics materials under the intermediate-high temperature acidic condition.

Description

technical field [0001] The invention relates to a glass fiber impregnating agent capable of improving the acid corrosion resistance of FRP composite materials in a medium-high temperature environment, and is particularly suitable for the treatment of glass fiber reinforced materials in the construction of FRP chimneys and flues. Background technique [0002] The glass fiber sizing is generally in the state of emulsion, and is coated on the surface of the glass fiber by a graphite roller during the drawing forming process, and coated on the surface of the glass fiber after drying. The sizing protects the glass fiber from abrasion, breakage, and flying during the drawing and winding process. The glass fiber sizing acts as a bridge between the fiber and the matrix material (resin) during use. Sizing agent formulation technology has always been one of the core technologies in the glass fiber manufacturing industry. Whether the sizing agent formulation is selected reasonably dire...

AI Technical Summary

Problems solved by technology

The surface treatment of glass fiber is mainly based on textile sizing containing paraffin and enhanced sizing containing polyvinyl acetate (PVAC). For example, glass fiber products containing such sizing have weak interfacial bonding force in medium-high temperature acidic environment , the mechanical properties attenuate significantly; long-term use of components such as paraffin and PVAC will degrade, causing whitening and foaming on the surface of the product, affecting the service life of the FRP chimney flue