Direct roving sizing for reinforced epoxy resins

Abstract

The invention discloses a direct twistless rough yarn impregnating compound for reinforcing epoxy resin. The direct twistless rough yarn impregnating compound comprises a silane coupling agent, a film-forming agent, a lubricating agent, a pH regulator and water, wherein the silane coupling agent is the silane coupling agent with an epoxide functional group; the film-forming agent is epoxy resin latex or the combination of epoxy resin emulsion and polyurethane emulsion; the epoxy resin emulsion is prepared by emulsifying non-modified epoxy resin, and the epoxy resin has the relative molecular mass of 360 to 500, and epoxide equivalent of 180 to 250; the polyurethane emulsion is prepared by emulsifying epoxy modified polyurethane resin, and the epoxy modified polyurethane resin has the relative molecular mass of 1000 to 2000; the lubricating agent is the combination of a cationic lubricating agent and a nonionic lubricating agent; the impregnating compound has the solid content of 5 to 8%. The impregnating compound shows high compatibility and permeability with epoxy resin; the direct twistless rough yarn produced with the impregnating compound has the advantage that the fatigue resistance of a glass fiber reinforced epoxy resin compound material is greatly improved.

Description

[0001] (1) Technical field [0002] The invention relates to the technical field of glass fiber production, in particular to providing a direct untwisted roving sizing agent for reinforcing epoxy resin. [0003] (2) Background technology [0004] Glass fiber direct roving and its stitch-woven fabric are widely used in the field of wind power generation as the main reinforcement material for wind power blades. [0005] Faced with the threat of fossil fuel depletion and increasingly severe energy dilemma, countries around the world are discussing the issue of renewable energy. Among the various options, wind power is the renewable energy technology with the most mature technology, the most large-scale development conditions and the most commercial development prospects among new energy sources, and it has gradually become the most worthy of consideration. Many countries in the world have attached great importance to the development of wind power. The installed capacity of wind p...

AI Technical Summary

Problems solved by technology

[0008] CN101734869A discloses a sizing agent for non-alkali glass fiber direct yarn for wind energy fabrics. The direct roving produced by using the sizing agent not only has good compatibility with epoxy resin, but also can make the product have excellent mechanical properties , but the patent does not involve the fatigue resistance of reinforced materials, and it also shows that the fatigue resistance is not good enough in practical applications

Images