refrigeration insulation material

pu system : refrigeration insulation material combination polyether polyol with foam agent ,and isocyanate 1.advantage: mobility,uniform density distribution good dimensional stability low thermal conductivity 2.chemical performance: apperance:light yellow transparent liquid density :1.03-1.1g/ml(20degrees) viscosity:380-720mpas(25degrees) hydroxyl value:180-250mgKOH/g 3.reaction parameters: stirring time: 6secs cream time :8-13secs gel time:30-50secs track free time:70-100secs free foam density:5-25kg/m3 4.storage: products is stored in a cool ,ventilated,dry place with 20 degrees