High-performance fiberglass winding yarn sizing agent and preparation method thereof

Abstract

The invention relates to a high-performance fiberglass winding yarn sizing agent. Solid containing substances of the sizing agent account for 5%-7% of the total mass of the sizing agent, and the rest is deionized water, wherein the solid containing substances of the sizing agent comprise, by mass, 55%-80% of epoxy resin emulsion, 10%-27% of a nonionic lubricant, 5%-18% of a silane coupling agent, 0.5%-2.5% of a wetting agent and 1%-5.5% of organic acid, and the total mass of the solid containing substances is 100%. The sizing agent enables fiberglass to achieve the excellent processability and less hairness and is good in compatibility with epoxy resin, polyester resin, vinyl resin and thermosetting resin and high in interfacial strength, and a composite material has the excellent wet-state shear strength retention rate.

Description

technical field [0001] The invention relates to a high-performance glass fiber winding yarn sizing agent, which belongs to the field of glass fiber sizing agents. Background technique [0002] High-performance glass fiber refers to higher mechanical properties, stronger corrosion resistance, higher heat-resistant temperature, excellent dielectric and electrical insulation properties, etc., compared with ordinary glass fibers. It is used as a high-performance composite material The reinforced base material is mainly used in defense fields such as aviation, aerospace, weapons, and nuclear industry. One of the key technologies of high-performance glass fiber reinforced composites is the sizing technology that determines the performance of the material process and composite interface. [0003] The sizing agent is a glass fiber surface treatment agent. After the glass fiber flows out of the bushing plate, it usually needs to be treated with a water-based sizing agent to endow th...

AI Technical Summary

Problems solved by technology

[0007] The film-forming agent in the above-mentioned winding yarn sizing formula generally only uses low molecular weight epoxy resin emulsion with epoxy equivalent of 175-200g / eq, or chooses 175-200g / eq epoxy resin emulsion plus 1-2 kinds of water-soluble The combination of resins, only using 175 ~ 200g / eq epoxy resin emulsion can not meet the processing performance, glass fiber precursors will produce more hairiness in the subsequent processing, and the glass fiber products produced by adding water-soluble epoxy resin formula The storage stability is poor, and the yarn is easy to harden, which is not conducive to the processing and mechanical properties of composite materials

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