Polybutene sulfone foam

Properties of Poly butene Sulfone Foam. Many properties of polybutene sulfone foam are similar to those of polystyrene foam. Mechanical properties are a little lower for the same foam density, but the bulk density of polybutene sulfone is 1.37 compared with 1.05 for polystyrene. Figure 6 shows that mechanical properties vary in the same ratio as density The insulating properties of polybutene sulfone foam are very good, somewhat better than polystyrene foam (Figure 7). Polybutene sulfone has a good solvent resistance as shown in Table I. In particular, styrene, benzene, and toluene do not attack polybutene sulfone but attack polystyrene. 

Polybutene sulfone foam is also different from polystyrene foam in its combustion behavior, which is important for various applications. This foam burns without smoke production unlike polystyrene which burns with an abundant black smoke. 

Applications. Polybutene sulfone foam can be used in all usual applications of rigid foams, in particular with the following obvious advantages over expanded polystyrene ... 

Sandwich panels polyesters can be coated directly on polybutene sulfone foam (styrene does not dissolve the foam). 

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See also in sourсe #XX -- [ ]

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