CN108793937A - A kind of New Phosphorus gypsum building fireproof heat insulating air parcel and preparation method - Google Patents
A kind of New Phosphorus gypsum building fireproof heat insulating air parcel and preparation method Download PDFInfo
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- CN108793937A CN108793937A CN201710320525.7A CN201710320525A CN108793937A CN 108793937 A CN108793937 A CN 108793937A CN 201710320525 A CN201710320525 A CN 201710320525A CN 108793937 A CN108793937 A CN 108793937A
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- Prior art keywords
- magnesium chloride
- magnesia
- heat insulating
- ardealite
- fireproof heat
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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
- C04B28/30—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 magnesium cements or similar cements
- C04B28/32—Magnesium oxychloride cements, e.g. Sorel cement
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
-
- 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
-
- 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
- C04B2111/40—Porous or lightweight materials
-
- 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
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- 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
Abstract
The invention discloses a kind of New Phosphorus gypsum building fireproof heat insulating air parcel and preparation methods,Raw material includes magnesium chloride hexahydrate,Water,Magnesia,Ardealite,Dioxygen water foaming agent,The quality of magnesia and the mass ratio of magnesium chloride hexahydrate are 100: 75-85,The mass ratio of the quality of the ardealite and the magnesia is 1-200: 100,The quality of dioxygen water foaming agent is the magnesium chloride,Magnesia,The 0.25~1% of ardealite gross mass,75 parts of magnesium chloride hexahydrates are put into water,Wait for that it is dissolved completely,Be made Baume degrees 20-32 magnesium chloride hexahydrate solution,Then by 100 parts of magnesia,1-200 parts of ardealites are added Baume degrees and are stirred in blender in the magnesium chloride hexahydrate solution of 20-32,After its completely fusion,4~6 parts of dioxygen water foaming agents are added,It is sufficiently stirred 3~5 minutes,It is then injected into mold,Stand foaming 30~40 minutes,It is demoulded after its solidification,It is cleavable blocking after conserving 1~2 day,New Phosphorus gypsum building fireproof heat insulating air parcel is made.
Description
Technical field
The present invention relates to a kind of New Phosphorus gypsum building fireproof heat insulating air parcel and preparation methods, belong to building material field.
Background technology
In the architecture production industry rapidly developed at present, the demand of thermal insulation material is increasing, and prior art China uses
Thermal insulation material mostly use cement board preparation, but this thermal insulation material is than great, and heat insulation effect is bad.Also have water chestnut
Magnesium cement has that brittle, heat insulation effect is bad directly as thermal insulation material, isolation strip and fire proofing material.Currently, one
As using styrofoam, ardealite as external wall insulation, isolation strip, fire proofing material etc., but A is not achieved in styrofoam fire protecting performance
Grade, and ardealite is of high cost, there is largely discarded ardealite in the production process of ardealite, because ardealite is in production process
In be added with dioxygen water foaming agent, productions and application cannot be melted down again, can only be deposited in outside storehouse, accumulate over a long period when waste, it is useless
The ardealite abandoned has resulted in very big harm.Therefore, there is an urgent need for developing a kind of New Phosphorus gypsum building fireproof heat insulating air parcel, can make
It uses discarded ardealite as primary raw material, realizes refuse reclamation, and can have higher compression strength, extremely low heat conduction system
Number and A grades of non-ignitable fire protecting performances.
Invention content
The technical problem to be solved by the present invention is to overcome existing technological deficiencies, provide a kind of New Phosphorus gypsum building fire prevention
Keep the temperature air parcel and preparation method, waste phosphorus stone in the New Phosphorus gypsum building fireproof heat insulating air parcel industrial production that the present invention obtains
Cream realizes the utilization again of industrial waste as primary raw material, reduces the production cost of magnesite material, made former material
Material can be cut by actually required shape and size, also can directly produce specific shape according to the shape and decoration of mold
Shape and product with decorative pattern, had not only improved the neat and artistic degree of product but also had reduced the integral installation cost and technique of product,
The New Phosphorus gypsum building fireproof heat insulating air parcel has higher compression strength, extremely low thermal coefficient and A grades of non-ignitable fire prevention
Performance, while the preparation method is simple for process, simple flow, short preparation period, can be by rationally changing the proportioning of each raw material
Mode produces the raw material of different attribute, can be achieved with mass producing using existing equipment and machinery.
In order to solve the above technical problem, the present invention provides the following technical solutions：
A kind of New Phosphorus gypsum building fireproof heat insulating air parcel and preparation method, raw material include magnesium chloride hexahydrate, water, oxidation
Magnesium, ardealite, dioxygen water foaming agent, the quality of magnesia and the mass ratio of magnesium chloride hexahydrate are 100: 75-85, the ardealite
The mass ratio of quality and the magnesia be 1-200: 100, the quality of dioxygen water foaming agent be the magnesium chloride, magnesia,
75 parts of magnesium chloride hexahydrates are put into water, wait for that it is dissolved completely, Baume degrees is made and exists by the 0.25~1% of ardealite gross mass
The magnesium chloride hexahydrate solution of 20-32, then by 100 parts of magnesia, six water of the 1-200 parts of ardealites addition Baume degrees in 20-32
It is stirred in blender in magnesium chloride solution, after its completely fusion, 4~6 parts of dioxygen water foaming agents is added, are sufficiently stirred
3~5 minutes, be then injected into mold, stand foaming 30~40 minutes demoulds after its solidification, after maintenance 1~2 day it is cleavable at
New Phosphorus gypsum building fireproof heat insulating air parcel is made in block.
In said program preferably, the Baume degrees of the magnesium chloride hexahydrate solution is 24.
In any of the above-described scheme preferably, the quality of the magnesia and the mass ratio of the magnesium chloride hexahydrate are 100:
75,100: 80 or 100: 85.
In any of the above-described scheme preferably, the quality of the magnesia and the mass ratio of the magnesium chloride hexahydrate are 100:
75。
In any of the above-described scheme preferably, the mass ratio of the quality of the ardealite and the magnesia be 1: 100,
100: 100 or 200: 100.
In any of the above-described scheme preferably, the quality of the ardealite and the mass ratio of the magnesium chloride hexahydrate are 200:
100。
In any of the above-described scheme preferably, the quality of the dioxygen water foaming agent is the magnesium chloride, magnesia and phosphorus
The 0.25%, 0.5%, 0.75% or 1% of gypsum gross mass.
In any of the above-described scheme preferably, the quality of the dioxygen water foaming agent is the magnesium chloride, magnesia and phosphorus
The 0.5% of gypsum gross mass.
The present invention also provides a kind of preparation processes of ardealite/magnesite material, including following steps：
(1) magnesium chloride hexahydrate is put into water, waits for that it is dissolved completely, be made Baume degrees 20-32 magnesium chloride hexahydrate
Solution.
(2) magnesia, ardealite are added in the aqueous solution that step (1) obtains, and are then sufficiently stirred in blender；
(3) dioxygen water foaming agent is added after the raw material in step (2) completely fusion, is sufficiently stirred 3-5 minutes, until
It is even；
(4) mixture after stirring step (1) injects mold, stand foaming 30~40 minutes；
(5) mold for obtaining step (4) conserves 24~48 hours at a temperature of 10~35 DEG C, is demoulded after its drying,
Obtain ardealite/magnesite material.
In any of the above-described scheme preferably, in step (5) curing temperature be 10 DEG C, 15 DEG C, 20 DEG C, 25 DEG C, 30 DEG C or
35℃。
In any of the above-described scheme preferably, curing temperature is 30 DEG C in step (5).
In any of the above-described scheme preferably, curing time is 24 hours, 36 hours or 48 hours in step (5).
In any of the above-described scheme preferably, curing time is 48 hours in step (5).
In any of the above-described scheme preferably, mixing time is 3 minutes, 4 minutes or 5 minutes in step (3).
In any of the above-described scheme preferably, mixing time is 5 minutes in step (3).
In any of the above-described scheme preferably, in step (4) the stand foaming time be 25 minutes, 30 minutes, 35 minutes, 40
45 minutes minutes.
In any of the above-described scheme preferably, the stand foaming time is 40 minutes in step (4).
The present invention is compared to the advantages of traditional handicraft：The New Phosphorus gypsum building fireproof heat insulating air parcel that the present invention obtains is used
Waste phosphogypsum realizes the utilization again of industrial waste, reduces the life of magnesite material as primary raw material in industrial production
Cost is produced, made raw material can be cut by actually required shape and size, also can be according to the shape and decorations of mold
Line directly produces specific shape and the product with decorative pattern, has not only improved the neat and artistic degree of product but also has reduced product
Integral installation cost and technique, for the New Phosphorus gypsum building fireproof heat insulating air parcel compression strength up to 9.5MPa, thermal coefficient is low
In 0.04W/Mk, not so fire protecting performance reaches A grades.The preparation method is simple for process simultaneously, and simple flow, short preparation period can
Raw material producing different attribute by way of rationally changing the proportioning of each raw material use existing equipment and mechanical energy
Realize large-scale production.
Specific implementation mode
Hereinafter, preferred embodiments of the present invention will be described, and preferred embodiment described herein is merely to illustrate reconciliation
The present invention is released, is not intended to limit the present invention.
Embodiment 1：
A kind of New Phosphorus gypsum building fireproof heat insulating air parcel, preparation method include the following steps：
(1) 75 parts of magnesium chloride hexahydrates being added to the water after being sufficiently mixed, it is molten in 24 magnesium chloride hexahydrate to be prepared into Baume degrees
Liquid；
(2) magnesia and magnesium chloride hexahydrate mass ratio are limited as 100: 75, ardealite and magnesia mass ratio are 200:
100, magnesia, ardealite are added in the magnesium chloride hexahydrate solution of step (1) preparation in restriction ratio, are then stirred for device
In be sufficiently stirred to obtain mixed solution；
(3) again by magnesium chloride hexahydrate solution, the dioxygen water foaming agent of magnesia and ardealite mixed solution gross mass 0.5%
It is put into the mixed solution that step (2) obtains and continues to be sufficiently stirred 5 minutes, until uniformly, obtaining sticky solution；
(4) the sticky solution of the mixing that step (3) obtains is injected into mold, stand foaming 40 minutes；
(5) mold for obtaining step (4) conserves 48 hours at a temperature of 30 DEG C, is demoulded after its drying, obtains former material
Material；
(6) raw material that step (5) obtains are cut by actually required shape and size, novel ardealite is made
Building fire protection keeps the temperature air parcel.
The New Phosphorus gypsum building fireproof heat insulating air parcel that the present invention obtains tests its compression strength in universal testing machine and is
9.5MPa, intensity is higher, completely can be up to standard.Thermal coefficient reaches 0.04W/Mk, more slightly lower than the thermal coefficient of styrofoam, but
Using effect in Practical Project is substantially suitable, can meet the heat-insulated needs of building heat preservation.Fire protecting performance reach A grades it is non-ignitable.
Embodiment 2：
A kind of New Phosphorus gypsum building fireproof heat insulating air parcel, preparation method include the following steps：
(1) 85 parts of magnesium chloride hexahydrates being added to the water after being sufficiently mixed, it is molten in 20 magnesium chloride hexahydrate to be prepared into Baume value
Liquid；
(2) magnesia and magnesium chloride hexahydrate mass ratio are limited as 100: 80, the mass ratio of ardealite and magnesia is 1:
100, magnesia, ardealite are added in the magnesium chloride hexahydrate solution of step (1) preparation in restriction ratio, is then added to and stirs
It mixes and is sufficiently stirred to obtain mixed solution in device；
(3) the dioxygen water foaming agent of magnesium chloride solution, magnesia and ardealite gross mass 0.25% is put into step again
(2) continue to be sufficiently stirred 3 minutes in the mixed solution obtained, until uniformly, obtaining sticky solution；
(4) the sticky solution of the mixing that step (3) obtains is injected into mold, stand foaming 30 minutes；
(5) mold for obtaining step (4) conserves 24 hours at a temperature of 10 DEG C, is demoulded after its drying, obtains former material
Material.
(6) raw material that step (5) obtains are cut by actually required shape and size, novel ardealite is made
Building fire protection keeps the temperature air parcel.
The New Phosphorus gypsum building fireproof heat insulating air parcel that the present invention obtains tests its compression strength in universal testing machine and is
6.05MPa, intensity is higher, completely can be up to standard, and thermal coefficient reaches 0.04W/Mk, fire protecting performance reach A grades it is non-ignitable.
Embodiment 3：
A kind of New Phosphorus gypsum building fireproof heat insulating air parcel, preparation method, including following steps：
(1) 65 parts of magnesium chloride hexahydrates being added to the water after being sufficiently mixed, it is molten in 32 magnesium chloride hexahydrate to be prepared into Baume degrees
Liquid；
(2) magnesia and magnesium chloride hexahydrate mass ratio are limited as 100: 85, ardealite and magnesia mass ratio are 100:
100, magnesia, ardealite are added in the magnesium chloride hexahydrate solution of step (1) preparation in restriction ratio, are then stirred for device
In be sufficiently stirred to obtain mixed solution；
(3) again by magnesium chloride hexahydrate solution, the dioxygen Water blown of magnesia and ardealite mixed solution gross mass 0.75%
Agent, which is put into the mixed solution that step (2) obtains, to be continued to be sufficiently stirred 4 minutes, until uniformly, obtaining sticky solution；
(4) the sticky solution of the mixing that step (3) obtains is injected into mold, stand foaming 35 minutes；
(5) mold for obtaining step (4) conserves 36 hours at a temperature of 30 DEG C, is demoulded after its drying, obtains former material
Material；
(6) raw material that step (5) obtains are cut by actually required shape and size, novel ardealite is made
Building fire protection keeps the temperature air parcel.
The New Phosphorus gypsum building fireproof heat insulating air parcel that the present invention obtains tests its compression strength in universal testing machine and is
7.12MPa, intensity is higher, completely can be up to standard, and thermal coefficient reaches 0.04W/Mk, fire protecting performance reach A grades it is non-ignitable.
Embodiment 4：
A kind of New Phosphorus gypsum building fireproof heat insulating air parcel, preparation method, including following steps：
(1) 60 parts of magnesium chloride hexahydrates being added to the water after being sufficiently mixed, it is molten in 28 magnesium chloride hexahydrate to be prepared into Baume degrees
Liquid；
(2) magnesia and magnesium chloride hexahydrate mass ratio are limited as 100: 80, ardealite and magnesia mass ratio are 100:
100, magnesia, ardealite are added in the magnesium chloride hexahydrate solution of step (1) preparation in restriction ratio, are then stirred for device
In be sufficiently stirred to obtain mixed solution；
(3) the dioxygen water foaming agent of magnesium chloride hexahydrate solution, magnesia and ardealite mixed solution gross mass 1% is put again
Enter and continue to be sufficiently stirred 4 minutes in the mixed solution obtained to step (2), until uniformly, obtaining sticky solution；
(4) the sticky solution of the mixing that step (3) obtains is injected into mold, stand foaming 25 minutes；
(5) mold for obtaining step (4) conserves 30 hours at a temperature of 15 DEG C, is demoulded after its drying, obtains former material
Material；
(6) raw material that step (5) obtains are cut by actually required shape and size, novel ardealite is made
Building fire protection keeps the temperature air parcel.
The New Phosphorus gypsum building fireproof heat insulating air parcel that the present invention obtains tests its compression strength in universal testing machine and is
6.45MPa, intensity is higher, completely can be up to standard, and thermal coefficient reaches 0.04W/Mk, fire protecting performance reach A grades it is non-ignitable.
Improvement of the present invention in preparation process is not limited solely to the preparation method and flow of raw material, in raw material system
After the completion of standby, also there is larger improvement to its subsequent processing, simultaneously, it is possible to use the mold of specific shape size is once prepared
Molding, does not need secondary operation, reduces the waste of raw material, improve production efficiency, reduce production cost；And it is possible to
It selects the method for installing detachable facing additional in mould inside directly to carry out beautiful processing to finished product in the preparation, makes one-time formed
Product can direct plunge into use, reduce intermediate flow, ensure that the quality of product.The invention is utilized in industrial production and gives up
The ardealite abandoned greatly reduces the input cost of raw material as primary raw material, is even produced using discarded raw material new
Product, properties remain unchanged in available range, while having both the attributes such as resistance to compression, heat preservation, fire prevention, are a kind of New Phosphorus stone
Cream building fire protection keeps the temperature air parcel.
Finally it should be noted that：The foregoing is merely the preferred embodiment of the present invention, are not intended to restrict the invention, although
Present invention has been described in detail with reference to the aforementioned embodiments, still can be to aforementioned each reality for professional
The technical solution recorded in example is applied to modify or equivalent replacement of some of the technical features.It is all the present invention
Within spirit and principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of New Phosphorus gypsum building fireproof heat insulating air parcel and preparation method, it is characterised in that：Raw material include magnesium chloride hexahydrate,
Water, magnesia, ardealite, dioxygen water foaming agent, the quality of magnesia and the mass ratio of magnesium chloride hexahydrate are 100: 75-85, institute
The mass ratio for stating the quality of ardealite and the magnesia is 1-200: 100, the quality of dioxygen water foaming agent be the magnesium chloride,
75 parts of magnesium chloride hexahydrates are put into water, wait for that it is dissolved completely, wave is made by the 0.25~1% of magnesia, ardealite gross mass
U.S. degree is in the magnesium chloride hexahydrate solution of 20-32, and then by 100 parts of magnesia, Baume degrees is added in 20-32 in 1-200 parts of ardealites
Magnesium chloride hexahydrate solution in stirred in blender, after its completely fusion after, be added 4~6 parts of dioxygen water foaming agents, fill
Divide stirring 3~5 minutes, be then injected into mold, stand foaming 30~40 minutes demoulds after its solidification, can after conserving 1~2 day
It cuts blocking, New Phosphorus gypsum building fireproof heat insulating air parcel is made.
2. a kind of New Phosphorus gypsum building fireproof heat insulating air parcel according to claim 1 and preparation method, it is characterised in that：
The mass ratio of the quality of the magnesia and the magnesium chloride hexahydrate is 100: 75,100: 80 or 100: 85.
3. a kind of New Phosphorus gypsum building fireproof heat insulating air parcel according to claim 1 and preparation method, it is characterised in that：
The mass ratio of the quality of the ardealite and the magnesia is 1: 100,100: 100 or 200: 100.
4. a kind of New Phosphorus gypsum building fireproof heat insulating air parcel according to claim 1 and preparation method, it is characterised in that：
The quality of the dioxygen water foaming agent be the magnesium chloride hexahydrate, magnesia and ardealite gross mass 0.25%, 0.5%,
0.75% or 1%.
5. a kind of New Phosphorus gypsum building fireproof heat insulating air parcel according to claim 1 and preparation method, it is characterised in that：
The New Phosphorus gypsum building fireproof heat insulating air parcel be manufactured raw material, after cutting processing after can be formed it is of different shapes at
Product, cutting processing process is on material properties without influence.
6. a kind of New Phosphorus gypsum building fireproof heat insulating air parcel described in any one of claim 1 to 5 and preparation method, special
Sign is：Include the following steps：
(1) magnesium chloride hexahydrate is put into water, waits for that it is dissolved completely, be made Baume degrees 20-32 magnesium chloride hexahydrate solution.
(2) magnesia, ardealite are added in the aqueous solution that step (1) obtains, and are then sufficiently stirred in blender；
(3) dioxygen water foaming agent is added after the raw material in step (2) completely fusion, is sufficiently stirred 3-5 minutes, until uniformly；
(4) mixture after stirring step (1) injects mold, stand foaming 30~40 minutes；
(5) mold for obtaining step (4) conserves 24~48 hours at a temperature of 10~35 DEG C, demoulds, obtains after its drying
Ardealite/magnesite material；
(6) raw material that step (5) obtains are cut by actually required shape and size, New Phosphorus gypsum building is made
Fireproof heat insulating air parcel.
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| CN109809723A (en) * | 2019-04-04 | 2019-05-28 | 中南大学 | A kind of ardealite or building gypsum Quito crystalline substance cementitious matter, preparation method and application |
| CN111018465A (en) * | 2019-11-24 | 2020-04-17 | 四川昊禹铭城新材料科技有限公司 | Preparation method of heat insulation material expanded by phosphogypsum and product |
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