Refractory plasterboard and manufacture method thereof
Technical field
The present invention relates to a kind of refractory plasterboard and manufacture method thereof as material of construction.
Background technology
Plasterboard is a kind of material that main raw material is made with the plaster of Paris (β semi-hydrated gypsum).At present in building decoration and fitment, advantage such as plasterboard is in light weight with it, intensity is higher, thinner thickness, easy to process, sound insulation thermal insulation preferably and fire resistance becomes a kind of novel light material of construction of giving priority to.Plasterboard has been widely used in internal partition wall, body of wall cladding boards (replacing the wall plastering layer), top ceiling, acoustic panel, surface based laminate and the various decorative sheets etc. of various buildingss such as dwelling house, office building, shop, hotel and industrial premises, so its various performances are produced for people and life has confidential relation.Threaten the current society of the safety of people's life and property at fire always, how to produce the better plasterboard material of the fire performance problem very be concerned about of people always.Announced the plasterboard composition that fire performance is improved at CN1443146, but it comprises 55~92% hydrated calcium sulfate, 0.1~5% mineral and/or refractory fibre, 3~25% mineral additive (can be kaolin, illite, quartz, rhombspar etc.), 1~5% unexpansive vermiculite and 3~15% hydrated aluminum oxide.In CN 1443263, be on the surface of gypsum central layer, to be coated with mineral filler and the adhesive coated fiberglass batts of organic or inorganic that coating is selected from hydrated aluminum oxide, lime carbonate, kaolin, clay and composition thereof, to improve the fire performance of plasterboard.Market press for have the excellent fire resistance energy, gypsum sheet material that manufacture method is easy.
Summary of the invention
For overcoming the problem that prior art exists, the object of the present invention is to provide a kind of refractory plasterboard as material of construction, it has good fire performance.
Another object of the present invention also is to provide a kind of manufacture method of refractory plasterboard, and it is easy and simple to handle.
The inventor finds that through study in a large number deeply and carefully the plasterboard that the suitable composition of allocating makes has good fire performance.The inventor has also gone out to prepare the method for this plasterboard through a large amount of experimental studies, it is simple and easy to do.
Refractory plasterboard provided by the invention, comprise 0.4~1.2%, preferred 0.4~0.7% starch, 0.2~1.0%, preferred 0.3~0.6% glass fibre, 0.04~0.15% whipping agent, 3~8%, preferred 5~7% vermiculite and 1~4%, preferred 2~3% wilkinite, and the plaster of Paris of surplus.
Described glass fibre can be the conventional or known glass fibre in this area, can be middle alkali, alkali-free or neutral glass fibre.The filament diameter of described glass fibre is preferably 10~15 microns.Described whipping agent is conventional or known whipping agent, for example 12 sodium alkyl sulfate whipping agents of this area.Described vermiculite is the conventional or known vermiculite in this area.Described wilkinite is the conventional or known wilkinite in this area.
Refractory plasterboard of the present invention can also add the paper of 0.05~0.5% (weight %).Can also add 0.1~0.3% setting accelerator.Described paper is the conventional or known paper oar in this area.Described setting accelerator can be the conventional or known setting accelerator in this area, for example plaster stone, or vitriolate of tartar etc.
The manufacture method of refractory plasterboard provided by the invention, comprise with gesso and starch, glass fibre, whipping agent, vermiculite, and wilkinite mix moulding, drying.
In the described mixing step, described raw material can add with random order.Described mixing can be to carry out in the system of solvent with water.Described mixing can be carried out in this area routine or known equipment.
In described mixing step, can also add paper.Can also add setting accelerator.
Described glass fibre can be the conventional or known glass fibre in this area, can be middle alkali, alkali-free or neutral glass fibre.The filament diameter of described glass fibre is preferably 10~15 microns.Described whipping agent is conventional or known whipping agent, for example 12 sodium alkyl sulfate whipping agents of this area.Described vermiculite is the conventional or known vermiculite in this area.Described wilkinite is the conventional or known wilkinite in this area.Described paper is the conventional or known paper oar in this area.Described pulping liquor can be described paper be the slurries of matrix with water.Described setting accelerator can be the conventional or known setting accelerator in this area, for example plaster stone, or vitriolate of tartar etc.
Described moulding, drying step can carry out according to this area routine or known moulding, drying means and condition.
Plasterboard of the present invention has adopted rational prescription, makes plasterboard have the good fire resistance energy.Plasterboard of the present invention has also added whipping agent in preparation, to produce bubble, help alleviating the weight of plasterboard.
Have excellent fire performance through fire testing proof product of the present invention, fire-resistant level can arrive highest 4 hours, and general refractory slab only reaches one hour.The wallboard and the U.S.'s USG product that adopt refractory plasterboard of the present invention to make are tested comparison, and test result shows 3 hours fire endurances with two-sided double-deck 16 millimeters plates empty stomach wall of the present invention, and U.S. USG is with two-sided double-deck 19 millimeters plates empty stomach wall.
Refractory plasterboard of the present invention is applicable to the non-load bearing wall of various requirement, and fire performance is good, uses easy construction, just can meet the demands with two-layer plasterboard at most.The production method simple possible.
Embodiment
Below will the invention will be further described by embodiment, these descriptions are not that content of the present invention is done further to limit.One skilled in the art will understand that to be equal to replacement to what technical characterictic of the present invention was done, or corresponding the improvement, still belong within protection scope of the present invention.
Embodiment 1
In water, add 100 parts of plaster of Paris (the new building materials Group Co.,Ltd in north produces), 0.6 part starch (Beijing is weighed rich starch company limited and produced), 0.2 part glass fibre (length 9~15mm, 10~15 microns of filament diameters, 251 factories), 0.06 part whipping agent (the low whipping agent that coagulates, the sharp people's science and technology of Beijing energy company limited produces), 4 parts of vermiculites (prosperous the mining company in Lingshou, Hebei produces), with 2 parts of wilkinites (Weifang China Weihe River wilkinite company limited), mix moulding on the extrusion molding platform, 110~130 ℃ of dryings, the thick 15mm of product.
Embodiment 2-4
Method according to embodiment 1 prepares plasterboard, and just starch is respectively 0.4,0.8,1.0 part, and glass fibre is respectively 0.4,0.7,0.9 part, whipping agent is respectively 0.05,0.08,0.12 part, vermiculite is respectively 5,6,8 parts and wilkinite and is respectively 1,3,4 part, the thick 12mm of product.
Embodiment 5
Method according to embodiment 3 prepares plasterboard, has just also added 0.1 part pulping liquor (paper concentration is 4 weight %, and China Resources, Zaozhuang papermaking company limited produces) and 0.3 part gypsum powder (being got by the plaster stone fragmentation) in plaster of Paris slurries, the thick 16mm of product.
Embodiment 6-7
Method according to embodiment 1 prepares plasterboard, has just also added 0.18 part plaster stone, 0.25 part of vitriolate of tartar respectively as setting accelerator in plaster of Paris slurries.
Embodiment 8
The plasterboard that embodiment 1~7 is made carries out fire-resistant test, the wallboard and the U.S.'s USG product that adopt refractory plasterboard of the present invention to make are tested comparison, test result shows 3 hours fire endurances with two-sided double-deck 16 millimeters plates of the present invention wall on an empty stomach, and U.S. USG is with two-sided double-deck 19 millimeters plates empty stomach wall.Experimental result shows that plasterboard of the present invention has good fire performance.
Embodiment 9
The plasterboard that embodiment 1~7 is made carries out fire-resistant test, and fire testing the results are shown in Table 1.
Table 1 fire performance testing data
| Fire endurance (hour) | Test wall body structure and material | Testing standard |
| Plasterboard | Rock wool | Fire-resistant cotton | Keel |
| Greater than 4 | Two-sided each 3 layers 15 millimeters | 100 millimeters | Do not have | 100 keel, spacing 400 | GB/19978-1999 |
| Greater than 4 | Two-sided each 2 layers 16 millimeters | Do not have | 90 millimeters | 100 keel, spacing 400 | GB/19978-1999 |
| 4 | Two-sided each 2 layers 16 millimeters | Do not have | 75 millimeters | 75 keel, spacing 400 | GB/19978-1999 |
Experimental result shows that plasterboard of the present invention has good fire performance.