CN109180123A - A kind of gypsum base anti-fire door core board and preparation method thereof - Google Patents
A kind of gypsum base anti-fire door core board and preparation method thereof Download PDFInfo
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- CN109180123A CN109180123A CN201811097863.XA CN201811097863A CN109180123A CN 109180123 A CN109180123 A CN 109180123A CN 201811097863 A CN201811097863 A CN 201811097863A CN 109180123 A CN109180123 A CN 109180123A
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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
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
- E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
- E06B5/161—Profile members therefor
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
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Abstract
The present invention discloses a kind of gypsum base anti-fire door core board and preparation method thereof, is related to fire resistant doorsets field.The gypsum base anti-fire door core board includes following raw material: 280-350 parts of crystallite gypsum, 8-10 parts of fireproof gum, 5-10 parts of water-reducing agent, 50-80 parts of foaming agent water solution, 100-130 parts of water.Anti-fire door core board dry density prepared by the present invention is 300~350kg/m3, not less than 0.70MPa, over dry is anti-to be rolled over not less than 0.60MPa for over dry resistance to compression, meets the A1 grade fire-protection rating of GB8624-2006 " construction material and classification of combustion properties of building materials and products ".
Description
Technical field
The present invention relates to fire resistant doorsets technical fields, and in particular to a kind of gypsum base anti-fire door core board and preparation method thereof.
Background technique
Fire resistant doorsets are one of the measures of building fire separation, are widely used in the buildings such as civil buildings, chemical industry, machinery neck
Domain, property loss caused by effective fire containment play an important role, and increasingly by national construction sector and NFA
The great attention of general bureau.Fire resistant doorsets implement license granting mechanisms, and production fire resistant doorsets must obtain the production that NFA general bureau issues
Licensing, and anti-fire door core board is the core material of fire resistant doorsets indispensability, needs to obtain correlation in combustibility and security performance
The formal testing of department proposes higher condition to the production of anti-fire door core board.
Existing magnesia oxychloride cement anti-fire door core board, though there is the features such as lightweight, intensity are higher, at low cost, its volume is unstable
Fixed, moisture absorption returns halogen and returns the key techniques problems such as frost, buckling deformation, fire endurance time is short and never have and effectively solved.
In view of the above drawbacks, creator of the present invention obtains the present invention by prolonged research and practice finally.
Summary of the invention
To solve above-mentioned technological deficiency, the technical solution adopted by the present invention is, provides a kind of gypsum base anti-fire door core board,
Including following raw material: 280-350 parts of crystallite gypsum, 8-10 parts of fireproof gum, 5-10 parts of water-reducing agent, foaming agent water solution
50-80 parts, 100-130 parts of water.
Optionally, the gypsum base anti-fire door core board includes following raw material: 310-340 parts of crystallite gypsum, fire prevention
8.5-9.5 parts of glue, 7-9 parts of water-reducing agent, 60-75 parts of foaming agent water solution, 110-120 parts of water.
Optionally, the crystallite gypsum is the high-strength crystallite gypsum of α type, and the high-strength crystallite gypsum of the α type is using chemistry
The alpha-semi water plaster stone of gypsum, natural dihydrate gypsum or the production of industrial by-product dihydrate gypsum.Optionally, the high-strength microlite of α type
The granularity of cream is 180-300 mesh.
Optionally, the fireproof gum is chlorine partial emulsion.
Optionally, the water-reducing agent is naphthalene water reducer or poly carboxylic acid series water reducer.
Optionally, the foaming agent water solution is selected from the aqueous solution of sodium bicarbonate, ammonium carbonate, polyurethane or vegetable protein
It is at least one.
Optionally, the gypsum base fire-resistant door core plate material further includes the raw material of following parts by weight: gypsum reinforcing agent 1-2
Part, 0.5-0.8 parts of retarder.
Optionally, the gypsum reinforcing agent is aqueous polyurethane or reinforcing fiber.
In addition, the present invention also provides a kind of preparation methods of above-mentioned gypsum base anti-fire door core board, comprising the following steps:
Ratio in parts by weight weighs 280-350 parts of crystallite gypsum, and 8-10 parts of fireproof gum, 5-10 parts of water-reducing agent, foaming agent
50-80 parts of aqueous solution, 100-130 parts of water；
It injects water into agitator tank, starts blender, under stirring, crystallite gypsum is added, quickly stirring 4-5 minutes
Afterwards, fireproof gum and water-reducing agent is added, stirs evenly；
It is eventually adding foaming agent water solution, mixes slowly 3-5 minutes, obtains mixed slurry, it is spare；
The slurry prepared in above-mentioned steps is put into mold, is stood, demoulding obtains fire-resistant door core plate.
Compared with the prior art the beneficial effects of the present invention are:
1, steel-made fire-retardant door core plate dry density prepared by the present invention is 300-350 ㎏/m3, over dry resistance to compression is not less than
0.70MPa, the anti-folding of over dry are not less than 0.60MPa, meet the A1 of GB8624-2006 " construction material and classification of combustion properties of building materials and products "
Grade fire-protection rating.
2, anti-fire door core board of the present invention is prepared using the high-strength crystallite gypsum of α type of industrial by-product dihydrate gypsum production,
Cost of material is low and environmentally friendly.
3, anti-fire door core board of the present invention uses foaming agent water solution in raw materials for production, the foaming agent water solution
Using pore can be formed, have from respiratory.
4, the present invention is during prepare the gypsum base anti-fire door core board, each raw material mix can with heat release, therefore,
It still can be produced under low temperature environment.
5, anti-fire door core board prepared by the present invention, fire line is good, does not get damp and stability is high, corrosion resistance is good, effectively
Solve the problems, such as the pole moisture absorption of magnesia oxychloride cement fire-resistant door core, return halogen and return frost；Gypsum reinforcing agent is added, making for raw material is reduced
With reducing production cost, improve the intensity of anti-fire door core board, can effectively disperse anti-fire door core board plate in practical application
Stress so that anti-fire door core board production and handling process in it is not easy to break.
Specific embodiment
Combined with specific embodiments below, the technical characteristic above-mentioned and other to the present invention and advantage are made in more detail
It is bright.These embodiments are merely to illustrate the present invention and do not have to limit the scope of the invention.
Embodiment one
A kind of gypsum base anti-fire door core board, including following raw material:
280-350 parts of crystallite gypsum, 8-10 parts of fireproof gum, 5-10 parts of water-reducing agent, 50-80 parts of foaming agent water solution, water
100-130 parts.
Wherein, the crystallite gypsum is the high-strength crystallite gypsum of α type, and the high-strength crystallite gypsum of the α type is using chemical stone
The alpha-semi water plaster stone of cream, natural dihydrate gypsum or the production of industrial by-product dihydrate gypsum, 2h flexural strength 6MPa or more, 2h resistance to compression
Intensity 50MPa or more, normal consistency water requirement are 37%, and the granularity of the high-strength crystallite gypsum of the α type is 180-300 mesh.
Wherein, the fireproof gum is chlorine partial emulsion.
Wherein, the water-reducing agent is naphthalene water reducer or poly carboxylic acid series water reducer.
Wherein, the foaming agent water solution forms for foaming agent and water according to the proportional arrangement of 1:60, and the foaming agent
Aqueous solution is selected from at least one of the aqueous solution of sodium bicarbonate, ammonium carbonate, polyurethane or vegetable protein.
Wherein, the water can be natural water, be also possible to deionized water.
Wherein, the present invention provides the preparation method of the gypsum base anti-fire door core board, include the following steps:
(1) ratio weighs 280-350 parts of crystallite gypsum in parts by weight, 8-10 parts of fireproof gum, 5-10 parts of water-reducing agent, foams
50-80 parts of agent aqueous solution, 100-130 parts of water；
(2) it injects water into agitator tank, starts blender, under stirring, crystallite gypsum is added, quickly stirs 4-5
After minute, fireproof gum and water-reducing agent is added, stirs evenly；
(3) it is eventually adding foaming agent water solution, mixes slowly 3-5 minutes, obtains mixed slurry, it is spare；
(4) slurry prepared in above-mentioned steps is put into mold, is stood, demoulding obtains fire-resistant door core plate.
The gypsum base anti-fire door core board dry density for using above-mentioned raw materials formula and method to prepare is 300-350 ㎏/m3, absolutely
Dry resistance to compression is not less than 0.70MPa, and the anti-folding of over dry is not less than 0.60MPa, has fire line good, do not get damp, stability is high, anticorrosive
The problem that halogen returns frost is returned in the good performance of performance, the pole moisture absorption of effective solution magnesia oxychloride cement fire-resistant door core, meets GB8624-
The A1 grade fire-protection rating of 2006 " construction material and classification of combustion properties of building materials and productss ".
The present invention can mitigate the quality of the gypsum base anti-fire door core board using foaming agent, simultaneously because the foaming agent
Introducing will form pore, have from respiratory；Present invention further introduces water-reducing agent, the water-reducing agent uses the use for making water
Amount is reduced, and can increase the intensity of the gypsum base anti-fire door core board；In addition, joined fireproof gum in preparation process of the present invention,
The fireproof gum can not only increase the intensity of the gypsum base anti-fire door core board, can also increase the gypsum base fire-resistant door core
Plate fire prevention, the performance of moistureproof and mildewproof.
For the present invention during preparing the gypsum base anti-fire door core board, each raw material mixing can be with heat release, therefore, low
It still can be produced under warm environment.
Embodiment two
The difference of the present embodiment and above-described embodiment is that the gypsum base anti-fire door core board includes that following parts by weight are former
Material:
280 parts of crystallite gypsum, 8 parts of fireproof gum, 5 parts of water-reducing agent, 50 parts of foaming agent water solution, 130 parts of water.
Wherein, the crystallite gypsum is the high-strength crystallite gypsum of α type, and the high-strength crystallite gypsum of the α type is using chemical stone
The alpha-semi water plaster stone of cream, natural dihydrate gypsum or the production of industrial by-product dihydrate gypsum, 2h flexural strength 6MPa or more, 2h resistance to compression
Intensity 50MPa or more, normal consistency water requirement are 37%, and the granularity of the high-strength crystallite gypsum of the α type is 180-300 mesh.
Wherein, the fireproof gum is chlorine partial emulsion.
Wherein, the water-reducing agent is naphthalene water reducer or poly carboxylic acid series water reducer.
Wherein, the foaming agent water solution forms for foaming agent and water according to the proportional arrangement of 1:60, and the foaming agent
It is mixed for FP-01 type polyurethane foaming agent and FP-80 type cement mo(u)ld foaming agent according to the ratio of 5:5.
Wherein, the water can be natural water, be also possible to deionized water.
Over dry resistance to compression with the gypsum and anti-fire door core board of this formula preparation is 0.7MPa, and the anti-folding of over dry is 0.60MPa, is done
Density is 310Kg/m3。
Optionally, the foaming agent water solution is selected from the aqueous solution of sodium bicarbonate, ammonium carbonate, polyurethane or vegetable protein
It is at least one.
Embodiment three
The present embodiment place unlike the embodiments above is:
A kind of gypsum base anti-fire door core board, including following raw material:
310 parts of crystallite gypsum, 8.5 parts of fireproof gum, 7 parts of water-reducing agent, 60 parts of foaming agent water solution, 120 parts of water.
Wherein, the crystallite gypsum is the high-strength crystallite gypsum of α type, and the high-strength crystallite gypsum of the α type is using chemical stone
The alpha-semi water plaster stone of cream, natural dihydrate gypsum or the production of industrial by-product dihydrate gypsum, 2h flexural strength 6MPa or more, 2h resistance to compression
Intensity 50MPa or more, and the fineness of the high-strength crystallite gypsum of the α type is 180-300 mesh.
Wherein, the fireproof gum is chlorine partial emulsion.
Wherein, the water-reducing agent is naphthalene water reducer or poly carboxylic acid series water reducer.
Wherein, the foaming agent water solution forms for foaming agent and water according to the proportional arrangement of 1:60, and the foaming agent
It is mixed for FP-01 type polyurethane foaming agent and FP-80 type cement mo(u)ld foaming agent according to the ratio of 5:5.
Wherein, the water can be natural water, be also possible to deionized water.
Over dry resistance to compression with the gypsum and anti-fire door core board of this formula preparation is 0.70MPa, and the anti-folding of over dry is 0.60MPa,
Dry density is 310Kg/m3。
Example IV
The present embodiment place unlike the embodiments above is:
A kind of gypsum base anti-fire door core board, including following raw material:
320 parts of crystallite gypsum, 9 parts of fireproof gum, 8 parts of water-reducing agent, 70 parts of foaming agent water solution, 115 parts of water.
Wherein, the crystallite gypsum is the high-strength crystallite gypsum of α type, and the high-strength crystallite gypsum of the α type is using chemical stone
The alpha-semi water plaster stone of cream, natural dihydrate gypsum or the production of industrial by-product dihydrate gypsum, 2h flexural strength 6MPa or more, 2h resistance to compression
Intensity 50MPa or more, and the fineness of the high-strength crystallite gypsum of the α type is 180-300 mesh.
Wherein, the fireproof gum is chlorine partial emulsion.
Wherein, the water-reducing agent is naphthalene water reducer or poly carboxylic acid series water reducer.
Wherein, the foaming agent water solution forms for foaming agent and water according to the proportional arrangement of 1:60, and the foaming agent
It is mixed for FP-01 type polyurethane foaming agent and FP-80 type cement mo(u)ld foaming agent according to the ratio of 5:5.
Wherein, the water can be natural water, be also possible to deionized water.
Over dry resistance to compression with the gypsum and anti-fire door core board of this formula preparation is 0.70MPa, and the anti-folding of over dry is 0.60MPa,
Dry density is 310Kg/m3。
Embodiment five
The present embodiment place unlike the embodiments above is:
A kind of gypsum base anti-fire door core board, including following raw material:
340 parts of crystallite gypsum, 9.5 parts of fireproof gum, 9 parts of water-reducing agent, 75 parts of foaming agent water solution, 110 parts of water.
Wherein, the crystallite gypsum is the high-strength crystallite gypsum of α type, and the high-strength crystallite gypsum of the α type is using chemical stone
The alpha-semi water plaster stone of cream, natural dihydrate gypsum or the production of industrial by-product dihydrate gypsum, 2h flexural strength 6MPa or more, 2h resistance to compression
Intensity 50MPa or more, and the fineness of the high-strength crystallite gypsum of the α type is 180-300 mesh.
Wherein, the fireproof gum is chlorine partial emulsion.
Wherein, the water-reducing agent is naphthalene water reducer or poly carboxylic acid series water reducer.
Wherein, the foaming agent water solution forms for foaming agent and water according to the proportional arrangement of 1:60, and the foaming agent
It is mixed for FP-01 type polyurethane foaming agent and FP-80 type cement mo(u)ld foaming agent according to the ratio of 5:5.
Wherein, the water can be natural water, be also possible to deionized water.
Over dry resistance to compression with the gypsum and anti-fire door core board of this formula preparation is 0.75MPa, the anti-folding of over dry is 0.61MPa,
Dry density is 305Kg/m3。
Embodiment six
The present embodiment place unlike the embodiments above is:
A kind of gypsum base anti-fire door core board, including following raw material:
350 parts of crystallite gypsum, 10 parts of fireproof gum, 10 parts of water-reducing agent, 80 parts of foaming agent water solution, 100 parts of water.
Wherein, the crystallite gypsum is the high-strength crystallite gypsum of α type, and the high-strength crystallite gypsum of the α type is using chemical stone
The alpha-semi water plaster stone of cream, natural dihydrate gypsum or the production of industrial by-product dihydrate gypsum, 2h flexural strength 6MPa or more, 2h resistance to compression
Intensity 50MPa or more, and the fineness of the high-strength crystallite gypsum of the α type is 180-300 mesh.
Wherein, the fireproof gum is chlorine partial emulsion.
Wherein, the water-reducing agent is naphthalene water reducer or poly carboxylic acid series water reducer.
Wherein, the foaming agent water solution forms for foaming agent and water according to the proportional arrangement of 1:60, and the foaming agent
It is mixed for FP-01 type polyurethane foaming agent and FP-80 type cement mo(u)ld foaming agent according to the ratio of 5:5.
Wherein, the water can be natural water, be also possible to deionized water.
Over dry resistance to compression with the gypsum and anti-fire door core board of this formula preparation is 0.75MPa, and the anti-folding of over dry is 0.62MPa,
Dry density is 305Kg/m3。
Since the dosage of the high-strength microlite of α type is gradually increasing, as the absolute anti-of the anti-fire door core board prepared by it
Pressure and the ability of absolute anti-folding are gradually enhancing；The increase of the dosage of the foaming agent, the reduction of water consumption, with the α type
The increase of high-strength microlite generates synergistic effect, in the absolute resistance to compression for improving the anti-fire door core board and the ability of absolute anti-folding
Meanwhile it can also reduce the density of the anti-fire door core board.
Embodiment seven
The present embodiment place unlike the embodiments above is:
A kind of gypsum base anti-fire door core board, including following raw material:
350 parts of crystallite gypsum, 10 parts of fireproof gum, 10 parts of water-reducing agent, 2 parts of gypsum reinforcing agent, 80 parts of foaming agent water solution, delay
Solidifying 0.8 part of agent, 100 parts of water.
Wherein, the crystallite gypsum is the high-strength crystallite gypsum of α type, and the high-strength crystallite gypsum of the α type is using chemical stone
The alpha-semi water plaster stone of cream, natural dihydrate gypsum or the production of industrial by-product dihydrate gypsum, 2h flexural strength 6MPa or more, 2h resistance to compression
Intensity 50MPa or more, and the fineness of the high-strength crystallite gypsum of the α type is 180-300 mesh.
Wherein, the fireproof gum is chlorine partial emulsion.
Wherein, the gypsum reinforcing agent is aqueous polyurethane or reinforcing fiber.
Wherein, the water-reducing agent is naphthalene water reducer or poly carboxylic acid series water reducer).
Wherein, the foaming agent water solution forms for foaming agent and water according to the proportional arrangement of 1:60, and the foaming agent
It is mixed for FP-01 type polyurethane foaming agent and FP-80 type cement mo(u)ld foaming agent according to the ratio of 5:5.
Wherein, the water can be natural water, be also possible to deionized water.
Over dry resistance to compression with the gypsum and anti-fire door core board of this formula preparation is 0.80MPa, and the anti-folding of over dry is 0.63MPa,
Dry density is 305Kg/m3。
Preferably, the reinforcing fiber includes one of polypropylene fibre, glass fibre, polyester fiber, wood fibre
Or a variety of mixture.
Gypsum reinforcing agent is added in the present embodiment raw materials for production, it is possible to reduce the use of raw material reduces production cost,
The intensity of anti-fire door core board is improved, can effectively disperse the stress of anti-fire door core board plate in practical application, so that fire resistant doorsets
Core plate is not easy to break in production and handling process.
The preparation method of the gypsum base anti-fire door core board is provided in the present embodiment, is included the following steps:
(1) ratio in parts by weight weighs 350 parts of crystallite gypsum, and 10 parts of fireproof gum, 10 parts of water-reducing agent, gypsum reinforcing agent 2
Part, 80 parts of foaming agent water solution, 0.8 part of retarder, 100 parts of water；
(2) it injects water into agitator tank, starts blender, under stirring, crystallite gypsum is added, quickly stirs 4-5
After minute, fireproof gum, water-reducing agent, gypsum reinforcing agent and retarder is added, stirs evenly；
(3) it is eventually adding foaming agent water solution, mixes slowly 3-5 minutes, obtains mixed slurry, it is spare；
(4) slurry prepared in above-mentioned steps is put into mold, is stood, demoulding obtains fire-resistant door core plate.
Embodiment eight
The present embodiment and above-described embodiment the difference is that:
The high-strength crystallite gypsum of α type is the α-made of turning brilliant by dynamic steam pressure half using industrial by-product dihydrate gypsum
Water gypsum, specific production stage are as follows:
Using citric acid by-product-citric acid waste as raw material, citric acid waste ﹒ containing 90%CaSO4 2H2O and 10% attached water, carefully
Spend 200 mesh.
(1) additional agent solution is first prepared.
(2) by prepared additive spray solution to citric acid waste conveyer belt, according to following weight: proportion: lemon
Acid sludge 94%, additional agent solution 6%.
(3) mixture on conveyer belt is sent into powder solid reactor.Reactor outlet valve is closed, charging is opened
Valve opens the stirring in reactor, opens reactor heating system and is preheated, add mixture into reactor, closes charging
Mouthful.Mixture be stirred in the reactor paddle stirring it is uniform while, be gradually heated by the sonochemical activity, attached water in material and the crystallization water steam
Hair forms steam heating.
(4) when temperature of charge reaches 95 DEG C or more in reactor, straight-through inside reactor steam governing valve is opened, steaming is passed through
Vapour heating.When reactor temperature reaches 140 DEG C, constant temperature 55 minutes.
(5) outlet valve is opened, by the mixture discharging with pressure after reaction, into drying machine.Reactor pressure drops to often
After pressure, reactor speed of agitator is improved, accelerates discharging.Discharging finishes, and closes outlet valve.
(6) dryer temperature is dried at 140 DEG C, and when material is completely dried, i.e., material attachment water content is less than
0.5%, the high-strength crystallite final gypsum product of α type is obtained after dry.
Dry compression strength >=the 60Mpa of the high-strength crystallite gypsum of α type prepared with this method.
Using the α type high-strength crystallite gypsum preparation of industrial by-product dihydrate gypsum production in the present embodiment, cost of material it is low and
Environmental protection；And due to the dry compression strength >=60Mpa of the high-strength crystallite gypsum of α type that the present embodiment is prepared, the present invention can be improved
The intensity of prepared anti-fire door core board.
The foregoing is merely presently preferred embodiments of the present invention, is merely illustrative for the purpose of the present invention, and not restrictive
's.Those skilled in the art understand that in the spirit and scope defined by the claims in the present invention many changes can be carried out to it,
It modifies or even equivalent, but falls in protection scope of the present invention.
Claims (10)
1. a kind of gypsum base anti-fire door core board, which is characterized in that including following raw material: 280-350 parts of crystallite gypsum, preventing
Fiery glue 8-10 parts, 5-10 parts of water-reducing agent, 50-80 parts of foaming agent water solution, 100-130 parts of water.
2. gypsum base anti-fire door core board as described in claim 1, which is characterized in that including following raw material: microlite
310-340 parts of cream, 8.5-9.5 parts of fireproof gum, 7-9 parts of water-reducing agent, 60-75 parts of foaming agent water solution, 110-120 parts of water.
3. gypsum base anti-fire door core board as claimed in claim 2, which is characterized in that the crystallite gypsum is the high-strength crystallite of α type
Gypsum, and the high-strength crystallite gypsum of the α type is to be produced using chemical gypsum, natural dihydrate gypsum or industrial by-product dihydrate gypsum
Alpha-semi water plaster stone.
4. gypsum base anti-fire door core board as claimed in claim 3, which is characterized in that the granularity of the high-strength crystallite gypsum of α type
For 180-300 mesh.
5. gypsum base anti-fire door core board as described in claim 1, which is characterized in that the fireproof gum is chlorine partial emulsion.
6. gypsum base anti-fire door core board as described in claim 1, which is characterized in that the water-reducing agent is naphthalene water reducer or gathers
Carboxylic acid water reducing agent.
7. gypsum base anti-fire door core board as described in claim 1, which is characterized in that the foaming agent water solution is selected from bicarbonate
Sodium, ammonium carbonate, polyurethane or vegetable protein aqueous solution at least one.
8. gypsum base anti-fire door core board as described in claim 1, which is characterized in that the gypsum base anti-fire door core board further includes
The raw material of following parts by weight: 1-2 parts of gypsum reinforcing agent, 0.5-0.8 parts of retarder.
9. gypsum base anti-fire door core board as claimed in claim 8, which is characterized in that the gypsum reinforcing agent is aqueous polyurethane
Or reinforcing fiber.
10. a kind of preparation method of gypsum base anti-fire door core board, which comprises the following steps:
Ratio weighs 280-350 parts of crystallite gypsum in parts by weight, and 8-10 parts of fireproof gum, 5-10 parts of water-reducing agent, foaming agent is water-soluble
50-80 parts of liquid, 100-130 parts of water；
It injects water into agitator tank, starts blender, under stirring, crystallite gypsum is added, quickly after stirring 4-5 minutes,
Fireproof gum and water-reducing agent is added, stirs evenly；
It is eventually adding foaming agent water solution, mixes slowly 3-5 minutes, obtains mixed slurry, it is spare；
The slurry prepared in above-mentioned steps is put into mold, is stood, demoulding obtains fire-resistant door core plate.
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| CN110950621A (en) * | 2019-12-16 | 2020-04-03 | 湖南昌迅科技环保股份有限公司 | Gypsum foamed door core board and preparation method thereof |
| CN111099874A (en) * | 2019-12-09 | 2020-05-05 | 广州科源新材料有限公司 | Fireproof door core plate formed through rapid autoclaved curing and preparation method thereof |
| CN114853439A (en) * | 2022-06-01 | 2022-08-05 | 瓮福（集团）有限责任公司 | Phosphogypsum-based fireproof door core board and preparation process thereof |
| CN116396044A (en) * | 2023-04-13 | 2023-07-07 | 华侨大学 | Foaming gypsum and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111099874A (en) * | 2019-12-09 | 2020-05-05 | 广州科源新材料有限公司 | Fireproof door core plate formed through rapid autoclaved curing and preparation method thereof |
| CN110950621A (en) * | 2019-12-16 | 2020-04-03 | 湖南昌迅科技环保股份有限公司 | Gypsum foamed door core board and preparation method thereof |
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| CN116396044B (en) * | 2023-04-13 | 2024-08-27 | 华侨大学 | Foaming gypsum and preparation method and application thereof |
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