Thermoplastic prepreg slurry based on slurry method and preparation method

Abstract

The invention discloses thermoplastic prepreg slurry based on a slurry method and a preparation method. The slurry is prepared from the following components in percentage by mass: 1-50% of thermoplastic resin, 50-95% of water, 0.1-10% of a water-soluble polymer, 0.01-5% of a surfactant and 0.1-10% of a viscosity reducing agent. The invention further discloses the preparation method of the slurry.According to the thermoplastic prepreg slurry and the preparation method, the viscosity of a system is increased and the stability of resin powder in water is improved by selecting the water-soluble polymer appropriate in type and dosage; moreover, the binding power of resin powder to fibers is increased; in combination with the viscosity reducing agent, the viscosity of the slurry system is adjusted and the stability of the slurry is improved, so that the concentration of the resin slurry is convenient to control and continuous production of a prepreg is achieved; in addition, the dipping effect can be guaranteed and the balance of the stability and the dipping effect is achieved.

Description

technical field [0001] The invention relates to a prepreg slurry, in particular to a thermoplastic prepreg slurry based on a mud method and a preparation method. Background technique [0002] With the demand for energy saving, emission reduction and light weight, the application of thermoplastic resin-based composite materials in the fields of automobiles and aerospace continues to develop, and continuous fiber-reinforced thermoplastic composite materials have gradually attracted attention. Thermoplastic resins have the advantages of high heat resistance, high toughness, and low water absorption. At room temperature, thermoplastic resins are mostly in the form of solid particles; in the molten state, the resin melt has high viscosity, difficult melt flow, and poor impregnation effect with fibers. The ultra-fine resin powder is evenly soaked and dispersed into the fiber bundle by the slurry method, and the resin is fully soaked into the fiber by heating. [0003] The core o...

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Problems solved by technology

[0005] In order to solve the problem of poor stability of thermoplastic resin powder slurry, the present invention provides thermoplastic prepreg slurry and preparation method based on mud method, which can make resin powder dispersed stably in the system for a long time

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