STUDY ON PREPARATION AND PROPERTIES OF HIGH PERFORMANCE THERMOPLASTIC RESIN EMULSION SIZING AGENT

Abstract

Abstract: In this paper, a thermoplastic emulsion sizing agent was prepared by using phase inversion emulsification method, with thermoplastic resin PPBES as the main resin. The effects of emulsifiers, emulsifier content, emulsification temperature, shear rate, and molecular weight of the resin on the properties of the emulsion were discussed, and the optimal concentration of sizing agent was determined. The results showed that when using STAC as the emulsifier, mass ratio of emulsifier was 18.75%, emulsification temperature was 25 ℃, the shear rate was 11000 r/min, the resin number-average molecular weight was 5000, the average particle size of the emulsion was 110.5 nm, the centrifugal precipitation mass fraction was 2.01%, and Zeta potential was 55.1 mV. The surface energy of the carbon fiber reached 49.02 mJ/m², the optimal concentration of the sizing agent was 1.0%, the flexural strength and the interlaminar shear strength reached 1824 MPa and 80.2 MPa, respectively, which increased by 13.0% and 9.4%.

Key words: carbon fiber, thermoplastic resin, emulsion sizing agent, composite material

CLC Number:

TB332

CHEN Bo, WANG Jin-yan, LI Nan, LIU Cheng. STUDY ON PREPARATION AND PROPERTIES OF HIGH PERFORMANCE THERMOPLASTIC RESIN EMULSION SIZING AGENT[J]. Composites Science and Engineering, 2020, 0(10): 47-54.

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