CN1184162C - Application of gypsum as building boards raw material - Google Patents
Application of gypsum as building boards raw material Download PDFInfo
- Publication number
- CN1184162C CN1184162C CN 99104256 CN99104256A CN1184162C CN 1184162 C CN1184162 C CN 1184162C CN 99104256 CN99104256 CN 99104256 CN 99104256 A CN99104256 A CN 99104256A CN 1184162 C CN1184162 C CN 1184162C
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- China
- Prior art keywords
- board
- gypsum
- add
- foaming
- alpha
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
- C04B28/146—Calcium sulfate hemi-hydrate with a specific crystal form alpha-hemihydrate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
- C04B2111/0062—Gypsum-paper board like materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Finishing Walls (AREA)
- Building Environments (AREA)
Abstract
The present invention relates to the application of gypsum as building board raw material. The present invention has main invention points that the gypsum is alpha-semi-hydrated gypsum, and a gypsum building board produced by using the alpha-semi-hydrated gypsum as a raw material can a foaming or non-foaming element board, a board added with fiber, a board covered with paper, glass fiber net cloth, a composite board, etc. A foaming agent used for making a foaming board is sulfuric acid. Compared with a common gypsum building board, an alpha-semi-hydrated gypsum building board is stronger than the former in aspects of intensity, rigidity, impact resistance and water resistance. Even, the foaming board has better thermal insulation, sound insulation and shock resistance performance. When the foaming board is used as a wall body board material, a keel frame does not need to be pasted, a thermal insulation layer and a sound insulation layer do not need to be additionally arranged, and the foaming board can be independently used as a separate wall body or an outer wall after the foaming board is compounded.
Description
Technical field
The present invention relates to a kind of gypsum foam board and preparation method thereof, is the alpha-semi water plaster stone powder about a kind of sheet material raw material particularly, and whipping agent is vitriolic gypsum foam board and preparation method thereof.
Background technology
The used gypsum raw material of plaster of Paris sheet material of prior art is common semi-hydrated gypsum (being β-semi-hydrated gypsum), the plaster of Paris sheet material of gypsum production mainly contains Thistle board, gypsum hollow lath, gypsum block, gypsum fiber densification plate and glass screen cloth composition board thereof etc. thus.With these plaster of Paris sheet material compound bodies of wall, brick mixes interior wall than before all has minimizing at aspects such as building total mass, sole plate thickness, amount of reinforcement, is increasing to some extent aspect the effective usable floor area of building; As Shanghai architecture science research institute to high 27 floor, the research that the commercial building that floor area of building is 3.51 ten thousand square metres is carried out, replace the structure that brick mixes internal partition wall with the Paper-faced gyp board wall: the flooring design load of structure has alleviated 9.92～19.27%, the building total mass has alleviated 11%, the slab thickness attenuate 1cm of structure, the width of beam reduces 5cm, column cross-section size reduces 10cm, the cross dimensions of the main shear wall of part reduces by 5～10cm, sole plate thickness reduces 4.87%, amount of reinforcement reduces 9.91%, and civil engineering adds up to saves 2.87%, increases the effective usable floor area 1.08% of building, duration is short, engineering is completed ahead of schedule, and construction cost gathers comparison, reduces 15.4%.Than the mixed internal partition wall of brick significant technological and economical advantages is arranged from above light as can be seen body gypsum board wall.But at building field, progress along with science and technology, building material continues to bring out, and along with the raising day by day of construction quality, also more and more higher to all kinds of building materials performance demands, so with regard to use range and the new aspect that requires, the gypsum building sheet material and the combined wall thereof of prior art also have: intensity, rigidity is not ideal enough, not anti-collision, poor water resistance, the keel frame must be depended on and body could be found, usually between two dividing plates, must fill in material such as rock wool and just can reach good heat insulating, soundproof effect also has cost higher, and it is more loaded down with trivial details relatively to construct etc., as shown in Figure 1, with the various composite wall material technical features of all kinds of β-compound production of semi-hydrated gypsum plate.Because above deficiency has limited the application of gypsum lightweight sheet material in building and association area to a certain extent.
Summary of the invention
The objective of the invention is deficiency at above-mentioned prior art existence, a solution is proposed, make full use of the feature performance benefit of alpha-semi water plaster stone material, producing aspects such as a kind of intensity, rigidity, anti-collision, water tolerance, sound insulation, heat insulating has gypsum cystose of big technical progress and preparation method thereof.
For achieving the above object, the present invention takes following technical scheme: a kind of gypsum foam board is characterized in that: the sheet material major ingredient is the alpha-semi water plaster stone powder, and whipping agent is a sulfuric acid, and described sulfuric acid concentration is 98% o'clock, and add-on is below 2% of described terra alba weight.
Add in the described sheet material major ingredient that length is arranged is the filamentary material of 5～30mm, add-on is 0.5～5% of a described terra alba weight.
Be compounded with the glass screen cloth in the described sheet material.
Described plate surface is compounded with clad can paper.
A kind of making method of gypsum foam board, it is characterized in that: with the alpha-semi water plaster stone powder as major ingredient, add entry, add-on is 25～35% of a described terra alba weight, adding concentration is 98% sulfuric acid, add-on is below 2% of described terra alba weight, after in 3 minutes, fully stirring, and moulding.
Before stirring, add also that length is arranged is the filamentary material of 5～30mm, add-on is 0.5～5% of a described terra alba weight.
After fully stirring, with the composite molding of glass screen cloth.
After fully stirring, with the composite molding of clad can paper.
The present invention is owing to substitute the β-semi-hydrated gypsum that generally uses in the prior art with alpha-semi water plaster stone, select for use sulfuric acid as whipping agent simultaneously, therefore the gypsum foam board of producing all improves a lot on every technical indicator, all be better than prior art products aspect intensity, rigidity, shock resistance, the water tolerance, and have heat insulating, sound insulation, an anti-seismic performance preferably, need not depend on the keel frame during as ash wall body plate, need not set up heat insulating, pugging, can be independently as separating body of wall or compound back as exterior wall.
Description of drawings
Fig. 1 is the compound wall specification of common gypsum material commonly used, performance perameter table
Fig. 2 is the graph of a relation between foaming dosage and the foam unit weight
Fig. 3 is the graph of a relation between foaming dosage and the foam folding strength
Embodiment
Major ingredient of the present invention adopts the alpha-semi water plaster stone powder, and whipping agent adopts sulfuric acid, and when sulfuric acid concentration was 98%, add-on was below 2% of terra alba weight.With alpha-semi water plaster stone as major ingredient, its every performance index all are better than the product of making major ingredient in the prior art with β-semi-hydrated gypsum, with sulfuric acid as whipping agent of the present invention, its foaming mechanism is, gypsum belong to flash to because of sedimentogeneous rock, press the sedimentary mineralization sequence, it is deposited on after the carbonate, before the rock salt, thereby wherein always with a certain amount of CaCO
3, CaMg (CO
3)
2Settling; Is exactly this feature of utilizing gypsum raw material with sulfuric acid as whipping agent, makes sulfuric acid and carbonate reaction, emits CO
2Gas foams.The size of foam foaming is calculated according to the foaming needs and is adjusted the realization of vitriolic addition.With alpha-semi water plaster stone raw material production foamed building gypsum plate, certain relation (as Fig. 2, shown in Figure 3) is arranged between the folding strength of whipping agent sulfuric acid and foam, the density wherein.
The filamentary material that can add length and be 5～30mm in major ingredient can be produced and add fiber composite board, and add-on is 0.5～5% of a described terra alba weight.
Making method of the present invention comprises:
1, the production of the plain sheet material of foam
With a certain amount of alpha-semi water plaster stone powder, add water by 25～35% of terra alba weight, adding concentration is 98% sulfuric acid, add-on is not higher than 2% of terra alba weight, in 3 minutes, fully stirs, moulding, seasoning gets product.
For example: add alpha-semi water plaster stone powder 10Kg, add water 2.7Kg, add concentration and be 98% sulfuric acid 0.09Kg, fully stir 3 minutes after, inject mould molding, the demoulding in 15 minutes, seasoning, finished product unit weight is about 1.0g/cm
3
2, add the production of fibrous foam sheet material
It is an amount of to add the alpha-semi water plaster stone powder, add water by 25～35% of terra alba weight, adding concentration is 98% sulfuric acid, add-on is not higher than 2% of terra alba weight, adding length is the filamentary material of 5～30mm, and add-on is 0.5～5% a filamentary material of terra alba weight, fully stirs in 3 minutes, moulding, seasoning gets final product.
For example: add alpha-semi water plaster stone powder 10Kg, add water 3.2Kg, add concentration and be 98% sulfuric acid 0.09Kg, add-on is not higher than 2% of terra alba weight, and adding length is the glass fibre 0.2Kg of 15mm, fully stir 3 minutes after, inject mould molding, seasoning gets product.
3, add the production of glass screen cloth, clad can paper compound foam board
Raw material is equipped with as above-mentioned 1 or 2, after fully stirring 3 minutes, raw material is injected as mould, with glass screen cloth or the composite molding of clad can paper, can obtain being compounded with the composite foam sheet of glass screen cloth or clad can paper.
In the various embodiments described above, also several method can be mutually combined, produce and add fiber, glass screen cloth composite foamed plate, cover paper, add the fiber foam plate, cover paper, add fiber, add various foam boards such as glass screen cloth composite foamed plate.
Claims (8)
1, a kind of gypsum foam board is characterized in that: the sheet material major ingredient is the alpha-semi water plaster stone powder, and whipping agent is a sulfuric acid, and described sulfuric acid concentration is 98% o'clock, and add-on is below 2% of described terra alba weight.
2, gypsum foam board as claimed in claim 1 is characterized in that: add in the described sheet material major ingredient that length is arranged is the filamentary material of 5～30mm, add-on is 0.5～5% of a described terra alba weight.
3, gypsum foam board as claimed in claim 1 or 2 is characterized in that: be compounded with the glass screen cloth in the described sheet material.
4, gypsum foam board as claimed in claim 1 or 2, it is characterized in that: described plate surface is compounded with clad can paper.
5, a kind of making method of gypsum foam board, it is characterized in that: with the alpha-semi water plaster stone powder as major ingredient, add entry, add-on is 25～35% of a described terra alba weight, adding concentration is 98% sulfuric acid, add-on is below 2% of described terra alba weight, after in 3 minutes, fully stirring, and moulding.
6, the making method of gypsum foam board as claimed in claim 5 is characterized in that: before stirring, add also that length is arranged is the filamentary material of 5～30mm, add-on is 0.5～5% of a described terra alba weight.
7, as the making method of claim 5 or 6 described gypsum foam boards, it is characterized in that: after fully stirring, with the composite molding of glass screen cloth.
8, as the making method of claim 5 or 6 described gypsum foam boards, it is characterized in that: after fully stirring, with the composite molding of clad can paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99104256 CN1184162C (en) | 1999-04-26 | 1999-04-26 | Application of gypsum as building boards raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99104256 CN1184162C (en) | 1999-04-26 | 1999-04-26 | Application of gypsum as building boards raw material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1273224A CN1273224A (en) | 2000-11-15 |
| CN1184162C true CN1184162C (en) | 2005-01-12 |
Family
ID=5271593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99104256 Expired - Fee Related CN1184162C (en) | 1999-04-26 | 1999-04-26 | Application of gypsum as building boards raw material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1184162C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101851081B (en) * | 2009-04-03 | 2013-10-16 | 秦永超 | Glass fiber reinforced gypsum product, and preparation method and equipment thereof |
| CN114349448A (en) * | 2021-08-27 | 2022-04-15 | 浙江固德优科技股份有限公司 | Fireproof exterior wall foamed gypsum insulation board produced from alpha high-strength gypsum and preparation method |
-
1999
- 1999-04-26 CN CN 99104256 patent/CN1184162C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1273224A (en) | 2000-11-15 |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Granted publication date: 20050112 |