Study on preparation and properties of flame retardant plant fiber honeycomb core

doi:10.19936/j.cnki.2096-8000.20220628.012

Abstract

Abstract: In order to respond to the environmental objectives of carbon peak and carbon neutralization in China and improve the cost performance of honeycomb core, wood fiber paper and hybrid fiber paper are used to prepare honeycomb core materials. The preparation process, flame retardancy, mechanical properties and water migration properties of honeycomb core are studied. The results show that when the weight ratio of flame retardant to paper is about 6%, both wood fiber paper honeycomb core with 48 kg/m³ bulk density and hybrid fiber paper honeycomb core have excellent flame retardant properties. The average self extinguishing time is 0 s, the average burning length is 79 mm and 51 mm, respectively, and the average combustion time of dripping is 0 s, which can meet the requirements of HB 5469-91 vertical combustion flame retardant. At room temperature, the steady-state plane compressive strength of wood fiber paper honeycomb core and hybrid fiber paper honeycomb core are 1.64 MPa and 1.75 MPa, respectively, the L-direction shear strength is 1.02 MPa and 1.08 MPa, respectively, and the W-direction shear strength is 0.53 MPa and 0.61 MPa, respectively.

Key words: carbon peak and carbon neutralization, wood fiber paper honeycomb core, hybrid fiber paper honeycomb core, flame retardant performance, water migration performance, composites

CLC Number:

TB332

LIU Yan-feng, LIU Qing-man, CHEN Xu. Study on preparation and properties of flame retardant plant fiber honeycomb core[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(6): 76-80.

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