Polystyrene composition, and heat insulation composite board produced by using composition
A styrene polymer and polystyrene technology, applied in the field of thermal insulation and flame retardant, can solve problems such as difficulty in obtaining market promotion, and achieve the effects of no decrease in mechanical properties and good flame retardant performance
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Embodiment 1
[0032] Mix 150g of commercially available conventional uncolored expandable polystyrene pre-expanded particles cured as above with 1g of commercially available I-type room temperature-curable waterborne epoxy resin solution, and then mix with 250g of flame retardant binder (with In mass parts ratio, sodium silicate: sodium fluorosilicate: magnesium hydroxide = 80:10:10). After drying the mixture, the flame retardant coated pre-expanded beads were molded (300 x 300 x 50 mm) using standard expandable polystyrene equipment and molding conditions.
[0033] After the foam was dried in an oven for 48 hours / 70°C, it was further conditioned at 50% RH and 23°C for 24 hours before being cut into 190 x 90 x 20 mm specimens.
[0034] The compressive strength of the flame retardant board is 0.4MPa, the flame retardant effect is A2, and there is no obvious shrinkage and no dripping when encountering flames.
Embodiment 2
[0036]Mix 200 g of the expandable polystyrene flame retardant black pre-expanded particles (containing 5% carbon black) prepared by the extrusion method after curing as above, with 3 g of commercially available Type II room temperature-curable waterborne epoxy resin solution, and then After mixing with 200 g of flame retardant binder (in terms of mass parts ratio, sodium silicate: sodium fluorosilicate: aluminum hydroxide: red phosphorus=75:10:10:5). After drying the mixture, the flame retardant coated pre-expanded beads were molded (300 x 300 x 50 mm) using standard expandable polystyrene equipment and molding conditions.
[0037] After the foam was dried in an oven for 48 hours / 70°C, it was further conditioned at 50% RH and 23°C for 24 hours before being cut into 190 x 90 x 20 mm specimens.
[0038] The compressive strength of the flame-retardant board is 0.3MPa, the flame-retardant effect is A2, and there is no obvious shrinkage and no dripping when encountering flames.
Embodiment 3
[0040] 200g of the expandable polystyrene flame retardant black pre-expanded particles (containing 4% graphite) prepared by the extrusion method after curing as above were mixed with 3g of commercially available Type II room temperature-curable waterborne epoxy resin solution, and then mixed with Mixed with 200 g of flame retardant binder (in terms of mass parts ratio, sodium silicate: sodium fluorosilicate: magnesium hydroxide: red phosphorus=75:10:8:4). After drying the mixture, the flame retardant coated pre-expanded beads were molded (300 x 300 x 50 mm) using standard expandable polystyrene equipment and molding conditions.
[0041] After the foam was dried in an oven for 48 hours / 70°C, it was further conditioned at 50% RH and 23°C for 24 hours before being cut into 190 x 90 x 20 mm specimens.
[0042] The compressive strength of the flame-retardant board is 0.3MPa, the flame-retardant effect is A2, and there is no obvious shrinkage and no dripping when encountering flames...
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Abstract
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