Structure, stability, and properties of phenolic fibers modified by phenyl molybdate

Author:

Kai Yang1ORCID,Mingli Jiao2,Xiaomei Zhang1,Wanshun Jia1,Quan Diao2,Ying Liu2,Jian Cao2

Affiliation:

1. Department of Fashion Design and Engineering, School of Fashion, Zhongyuan University of Technology, Zhengzhou, China

2. Department of Polymer Materials and Engineering, School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou, China

Abstract

Phenyl molybdate-modified phenolic fibers (PMoPFs) were prepared by melt spinning from the corresponding resin which was polymerized from phenol, formaldehyde, and phenyl molybdate, followed by solution curing and then heat curing processes. The molecular structures, including characteristic groups and molecular weight, were examined by nuclear magnetic resonance, Fourier transform infrared spectroscopy, and gel permeation chromatography. The influences of the curing processes were demonstrated by mechanical properties, scanning electron microscopy, and thermogravimetric analysis characterization. PMoPF with 8 wt% molybdic acid and cured in an oven possessed a tensile strength as high as 187 MPa, initial decomposition temperature of 300°C, and a char yield under nitrogen atmosphere at 800°C as high as 66.0%, with the molybdate (MoO4 2−) groups being introduced into the phenolic main chain.

Funder

the Science and Technology Foundation of Henan Province

Publisher

SAGE Publications

Subject

Materials Chemistry,Polymers and Plastics,Ceramics and Composites

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