| 摘要 |
In the present invention, there is disclosed a composition for producing a product containing set gypsum with interlocking matrix and exhibiting greater sag resistance and/or increased resistance to permanent deformation and/or exhibiting increased strength, which composition includes a mixture of a calcium sulfate material, water, and an appropriate amount of one or more enhancing materials comprising one or more of the following acids or salts, or the anionic portions thereof: sodium trimetaphosphate, sodium hexametaphosphate having 6-27 repeating phosphate units, tetrapotassium pyrophosphate, trisodium dipotassium tripolyphosphate, sodium tripolyphosphate, tetrasodium pyrophosphate, aluminum trimetaphosphate, sodium acid pyrophosphate, ammonium polyphosphate having 1000-3000 repeating phosphate units, or polyphosphoric acid having 2 or more repeating phosphoric acid units. There is also disclosed a product made of the above-described composition as well as a corresponding gypsum board. |
