| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to thermally insulating foamed products and compositions for their manufacturing. Thermally insulating foamed products have density from 5 to 50 g/l and thermal conductivity from 25 to 50 mW/mK. Products are obtained from compositions of nanoparticles of expandable vinylaromatic polymers, which include: a. 10-90 wt % of balls/granules of expandable vinylaromatic polymer, coloured with non-heat-conducting filling agent from coke in form of particles with the average particle diameter from 0.5 to 100 mcm, which has surface area in accordance with ASTM D-3037-89 (BET) from 5 to 50 m/g, containing up to 5 wt % with respect to polymer (a), of graphite and/or soot, and b. 90-10 wt % of balls/granules of in fact white expandable vinylaromatic polymer.EFFECT: preservation of foamed product shape, including impact of sun radiation for long periods of time.13 cl, 8 ex |
