| 摘要 |
Method for the manufacture of low density mineral wool structure panels by frothing a dilute aqueous dispersion of mineral wool, lightweight aggregate, binder and a small amount of amine-based cationic surfactant onto a non-woven scrim cover sheet (43). The resultant froth, a mass of very well formed, uniform bubbles, are of a nature that rapidly dewater and burst to concentrate the solids in the mass. The bubbles are readily broken without loss of the uniformly voided structural configuration by a first application of brief pulses of high vacuum followed by further dewatering under vaccum and rapid drying by passing high volumes of heated air through the voided mass without collapse of the structure to result in lightweight structural mineral wool panels. |
