Synthesis technology of lignin modified phenolic resin and properties of its moulding compounds

doi:10.19936/j.cnki.2096-8000.20211128.016

Abstract

Abstract: The effects of the molar ratio of the raw materials, quantity of lignin, amount of catalyst on the properties of the modified phenolic resin were studied by orthogonal test. The phenolic moulding compounds was prepared based on lignin modified phenolic resin and its properties were tested. The orthogonal results showed that the amount of lignin was the key influencing factor of the curing time, free phenol of resin and waste water, the response rate of phenol. While the quantity of catalyst was the key influencing factor of the viscosity and soften point. For this research, the optimum synthetic parameters of lignin modified phenolic resin suitable for composite were as follows: the molar ratio was 0.84, the amount of lignin was 10%, the quantity of catalyst was 0.9%. The moulding compounds based on lignin modified phenolic resin had better physical performance and thermotolerant performance.

Key words: lignin, phenolic resin, orthogonal test, moulding compounds, composites

CLC Number:

TB332

HUANG Shi-jun, TONG Yue-jin, SU Zhi-zhong, CHEN Yin-gui, AI Sheng-er, ZHANG Zhen-wei. Synthesis technology of lignin modified phenolic resin and properties of its moulding compounds[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(11): 102-107.

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