摘要 |
A fibrous mat-faced cementitious article comprising (a) a cementitious core, and (b) a first fibrous mat comprising polymer or mineral fibers and a hydrophobic finish on at least one surface thereof, wherein the hydrophobic finish is in contact with the cementitious core, and a method of preparing a fibrous mat-faced cementitious article, as well as a method of preparing a water-resistant cementitious article comprising (a) preparing an aqueous siloxane dispersion, wherein the dispersion comprises about 4 wt.% to about 8 wt.% siloxane, (b) combining the siloxane dispersion with a cementitious mixture to provide a cementitious slurry, (c) depositing the cementitious slurry onto a substrate, and (d) allowing the cementitious slurry to harden, thereby providing a cementitious article. |
申请人 |
UNITED STATES GYPSUM COMPANY;ENGBRECHT, DICK, C.;LIU, QINGXIA;SHAKE, MICHAEL, P.;WANG, XUMING;MILLER, DAVID, PAUL;BOLIND, MICHAEL, L.;REED, PAUL;ROELFS, DONALD, L.;BURY, RAFAEL |
发明人 |
ENGBRECHT, DICK, C.;LIU, QINGXIA;SHAKE, MICHAEL, P.;WANG, XUMING;MILLER, DAVID, PAUL;BOLIND, MICHAEL, L.;REED, PAUL;ROELFS, DONALD, L.;BURY, RAFAEL |