Glass fiber surface treating agent and preparation method thereof, glass fiber, fabric and application thereof

The invention provides a glass fiber surface treating agent and a preparation method thereof, a glass fiber, a fabric and application thereof. The glass fiber surface treating agent comprises effective components and water, and the solid content is 5.8-10.5%; the effective components comprise the following components in percentage by weight: 7.3%-17.3% of a coupling agent, 0.3%-2.8% of a penetrating agent, 7.7%-13.2% of a lubricating agent, 58.3%-81.9% of a film-forming agent, 0.4%-1.8% of a toughening agent and 2.4%-6.6% of an auxiliary agent; the film-forming agent comprises a film-forming agent A and a film-forming agent B, the film-forming agent A is a composition of a phenolic epoxy emulsion and a bisphenol A type epoxy emulsion, and the film-forming agent B is an alicyclic epoxy resin emulsion. The glass fiber produced by adopting the glass fiber surface treating agent has excellent bundling property, wear resistance and weaving property, the static penetration speed of the glass fiber fabric in epoxy r