FIELD: performing operations.
SUBSTANCE: invention relates to the technology of processing and use of lignin, namely to the use of lignin pyrolysis products as a plasticiser. Disclosed is the use of a mixture of pyrolysis products of sulphate lignin from soft and/or hard wood, obtained by pyrolysis in an inert gas medium at temperature of 400 °C, as a plasticiser for stabilizing the moulding process of the lignin-based polyphenol precursor. Approach enables to obtain a plasticiser with extended functional capabilities, which is used to obtain lignin and carbon fibres based on lignin.
EFFECT: use of the plasticiser provides stabilization of the moulding process, low glass transition temperature of the lignin substance, improved properties of the end product, high strength characteristics of the carbon fibre and homogeneity of the structure of the fibres.
1 cl, 2 dwg, 2 tbl, 3 ex
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