FIELD: building materials industry, more particularly raw mix for preparing heat-insulating products such as paper and cardboard for heat, insulation of pipelines. SUBSTANCE: raw mix comprises, wt %; vermiculite, 75-80; MgO- containing rigid chrysotileasbestos, 38.8-39.6; FeO, 2.12-3.25. EFFECT: lower heat conduction coefficient and greater flexibility of raw mix-based material. 1 tbl
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