| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a cementitious board facing material with high strength and fire resistance, and hardly causing interlaminar exfoliation even under a moist environment. <P>SOLUTION: A cementitious board 100 and a method for manufacturing the cementitious board are disclosed. The cementitious board 100 has a facing layer 105 having an areal weight of about 300 g/m<SP>2</SP>, and an air permeability rating of no greater than about 300 CFM/ft<SP>2</SP>(FG436-910 test method). The facing layer 105 reduces the penetration of slurry of a cementitious material during the manufacture of the board 100, and passes water vapor from the slurry while the slurry cures. Binders, coatings or saturants 107 decrease pore size, increase or decrease the contact angle of liquids, promote adhesion to cementitious cores 101, promote adhesion to the facing layer 105 and promote adhesion or affinity to adhesive compositions used to join cementitious boards to exterior insulation systems and exterior insulation finishing systems (EIS and EIFS). <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
