FIELD: chemistry.
SUBSTANCE: invention relates to production of structural materials based on gypsum binder. The mixture for making gypsum boards contains water, waste paper, gypsum dihydrate or phosphogypsum, urea-formaldehyde resin and starch. The mixture additionally contains loose asbestos fibre, with the following ratio of components, pts.wt: water 680-720; waste paper 20-25; gypsum dihydrate or phosphogypsum 83-87; urea-formaldehyde resin 4-4.4; starch 1-1.4; loose asbestos fibre 2-2.5.
EFFECT: high strength of gypsum boards.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| MASS FOR PRODUCTION OF GYPSUM BOARDS | 2008 |
|
RU2368586C1 |
| MIX FOR MAKING GYPSUM BOARDS | 2009 |
|
RU2393131C1 |
| MASS FOR PRODUCTION OF GYPSUM BOARDS | 2009 |
|
RU2410347C1 |
| MIXTURE FOR MAKING GYPSUM BOARDS | 2011 |
|
RU2455251C1 |
| MIXTURE FOR MAKING HEAT-INSULATION BOARDS | 2012 |
|
RU2484040C1 |
| CRUDE MIXTURE FOR GYPSUM BOARDS | 2011 |
|
RU2449962C1 |
| MASS FOR PRODUCTION OF GYPSUM PLATES | 2011 |
|
RU2473497C1 |
| MIXTURE FOR MAKING HEAT-INSULATION BOARDS | 2012 |
|
RU2484041C1 |
| MIXTURE FOR MAKING PHOSPHOGYPSUM BOARDS (VERSIONS) | 2012 |
|
RU2496737C1 |
| MIXTURE FOR MAKING HEAT-INSULATION BOARDS | 2012 |
|
RU2482087C1 |
