Preparation method of water-soluble polyarylether sizing agent and application thereof

Abstract

The invention discloses a preparation method of a water-soluble polyarylether sizing agent and an application thereof; which belong to the technical field of high-performance fiber sizing agents. The preparation method comprises the following steps: mixing phenolphthalein, potassium p-hydroxybenzenesulfonate, 2, 6-dichlorobenzonitrile and potassium carbonate, carrying out temperature programming reaction in a mixed solvent to obtain a polyarylether reaction solution, mixing the polyarylether reaction solution with absolute ethyl alcohol, fully soaking, crushing, heating and washing with absolute ethyl alcohol, and carrying out vacuum drying to obtain polyarylether small molecules; and dissolving in an acetic acid aqueous solution to obtain the water-soluble polyarylether sizing agent. The sizing agent prepared by the invention has the characteristics of good film-forming property, strong adhesive force and outstanding temperature resistance, can solve the problems that the existing high-performance fiber surface sizing agent is easy to decompose at high temperature and is weak in interface bonding and bonding acting force with a thermoplastic resin matrix, improves the comprehensive performance of a fiber reinforced resin matrix composite material, and expands the application field and range of the reinforced resin-based composite material.

Description

technical field

[0001] The invention relates to the technical field of high-performance fiber sizing agents, in particular to a preparation method and application of a water-soluble polyarylether sizing agent. Background technique

[0002] Basalt fiber is a continuous fiber made of natural volcanic extrusive rock and rapidly drawn after melting at 1500-1700°C. It has outstanding mechanical properties, excellent temperature resistance, stable chemical properties, green production, and no carcinogens. It is a key strategic material for the country's key development, and it is also one of the advanced materials and high-end industries that are prioritized for development. Basalt fiber fabrics have potential application prospects in many fields. In recent years, the research and application of basalt fiber reinforced resin matrix composites have become increasingly widespread, and they are involved in refractory materials, filter materials, building materials, thermal insulation...

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