CN114315298A - Ardealite fireproof door core board and preparation method thereof - Google Patents
Ardealite fireproof door core board and preparation method thereof Download PDFInfo
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- CN114315298A CN114315298A CN202111680555.1A CN202111680555A CN114315298A CN 114315298 A CN114315298 A CN 114315298A CN 202111680555 A CN202111680555 A CN 202111680555A CN 114315298 A CN114315298 A CN 114315298A
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Abstract
The invention discloses a phosphogypsum fireproof door core board and a preparation method thereof, belongs to the technical field of phosphogypsum fireproof door cores, and aims to solve the problems of poor mechanical property, short fire resistance time and large volume weight of the existing fireproof door core board. The ardealite fireproof door core board comprises the following components: the composite material comprises alpha-type phosphogypsum, fibers, redispersible latex powder, expanded foaming microbeads, fly ash microbeads, a foaming agent and a waterproof agent; the foaming agent and water are mixed and foamed by a foaming machine to obtain foam, the alpha-phosphogypsum, the fiber, the redispersible latex powder and the waterproofing agent are uniformly mixed, water is added for stirring to obtain slurry, the slurry and the foaming liquid are combined and mixed, then the expanded foaming micro-beads and the powdered coal micro-beads are added for stirring and mixing uniformly, and then a mould is poured for curing and then the product can be delivered. The fireproof door core plate solves the problem of poor mechanical property of the fireproof door core plate, and has the advantages of sound insulation, heat preservation, fire prevention, light volume weight and the like.
Description
Technical Field
The invention belongs to the technical field of door core plate processing, and particularly relates to a phosphogypsum fireproof door core plate and a preparation method thereof.
Background
With the development of the building industry and economy, the building industry has been developed at an unprecedented high speed, the demands of people are more and more diversified, the demands of people cannot be met by common door plates, the requirements of building materials of the door plates are higher and higher, the performance of the door plates becomes an important technical consideration and is also a key point and a difficult point of door industry research and development, the performance of the door plates is ultimately dependent on the performance of the door cores, and the performance of the door cores needs to be effectively improved, so that research needs to be carried out on the process of door core plate preparation.
The door plate is composed of a framework, a door core filling material and fireproof hardware, and the filling material of the door core plate is a core material for improving the performance of the door core plate. The filling materials of the existing door core board are rock wool, aluminum silicate wool, mineral wool, perlite boards, foamed magnesium oxychloride cement boards, foamed cement boards and the like. Although the materials are light in weight and good in heat insulation, the energy consumption is high in the production process, the materials are formed by organic bonding agents, pollution is generated in the production process and the use process, the environment-friendly requirement is difficult to achieve, and meanwhile, the problems that the core plate of the fireproof door is poor in integrity, short in fire-resistant limit time, poor in mechanical property, easy to deform, high in comprehensive cost, inconvenient to use and the like exist; although the perlite fireproof door core board has better fireproof performance, the board is formed by adopting strong alkaline adhesives such as water glass and the like, has corrosivity and poorer strength and toughness, and the product is easy to damage in the production and use processes; the vermiculite fire door core plate is formed by adopting an organic or inorganic adhesive, and has the problems of complex production process, regional limitation on raw material sources, large dry density and high comprehensive cost; although the core plate of the magnesium oxychloride cement fireproof door has the characteristics of light weight, high strength, low cost and the like, key technical problems of unstable volume, moisture absorption, halogen return and frost return, warping deformation, short fireproof limit time and the like are not solved effectively all the time; the fireproof door core plate prepared by foaming Portland cement or sulphoaluminate cement has the advantages of easy pulverization on the surface, low later strength and poor stability, and the quality of the fireproof door is seriously influenced.
Based on the defects of the fireproof door core board background technology, the fireproof door core board is obtained through long-term research and multiple experimental demonstrations.
Disclosure of Invention
The invention aims to: the phosphogypsum fire door core board and the preparation method thereof are provided to solve the problems of poor mechanical property, short fire resistance time and large volume weight of the existing fire door core board.
The technical scheme adopted by the invention is as follows:
the ardealite fireproof door core board comprises the following components in parts by weight: 850-950 parts of alpha-type phosphogypsum, 60-70 parts of fiber, 40-45 parts of redispersible latex powder, 370-413 parts of expanded foaming micro-beads, 125-144 parts of fly ash micro-beads, 2-2.3 parts of foaming agent and 3-3.4 parts of waterproof agent.
Preferably, the paint comprises the following components in parts by weight: 920 parts of alpha-type ardealite 880-containing organic silicon-inorganic composite material, 62-65 parts of fiber, 41-43 parts of redispersible latex powder, 384-containing expanded foaming micro-beads 402, 139 parts of fly ash micro-beads 133-containing organic silicon-inorganic composite material, 2.1-2.2 parts of foaming agent and 3.1-3.2 parts of waterproof agent.
Preferably, the paint comprises the following components in parts by weight: 900 parts of alpha-type phosphogypsum, 64 parts of fiber, 42 parts of redispersible latex powder, 393 parts of expanded foaming micro-beads, 136 parts of fly ash micro-beads, 2.1 parts of foaming agent and 3 parts of waterproofing agent.
Preferably, the fibers comprise polyester fibers or wood fibers.
Preferably, the redispersible latex powder comprises any one of vinyl acetate and ethylene copolymer rubber powder, ethylene and vinyl chloride and vinyl metasilicate ternary copolymer rubber powder, vinyl acetate and ethylene and higher fatty acid vinyl ester ternary copolymer rubber powder and vinyl acetate and higher fatty acid vinyl ester copolymer rubber powder.
Preferably, the foaming agent includes any one of sodium lauroyl sarcosinate, sodium lauryl sulfate and foaming gum.
Preferably, the water repellent comprises sodium methyl silicate or potassium methyl silicate.
A preparation method of a phosphogypsum fireproof door core plate comprises the following steps:
1) weighing foaming agents in component parts, and mixing the foaming agents with water to obtain a foaming liquid;
2) weighing alpha-type phosphogypsum, fibers, redispersible latex powder and a waterproof agent according to the component parts, and uniformly mixing;
3) transferring the foaming liquid obtained by mixing in the step 1) into a foaming agent machine for foaming, and metering the foam volume by using a quantitative container;
4) uniformly mixing the mixture obtained in the step 2), adding the mixture into a stirrer into which water is injected, stirring, and adjusting the pH value in the stirring process to obtain slurry;
5) adding the foam obtained in the step 3) into the slurry obtained in the step 4), uniformly stirring and mixing to obtain slurry, and then adding expanded foaming microbeads and fly ash microbeads in parts by weight;
6) pouring the slurry stirred in the step 5) into a mold which is assembled and coated with a release agent, and demolding after curing.
7) And (4) after demolding, arranging the demolded materials in the step 6) at intervals, putting the demolded materials into a storage rack, and placing the demolded materials into a drying room for drying and curing, and then packaging and leaving a factory.
Preferably, the foaming liquid in the step 1) is obtained by diluting a foaming agent with water to 25-35 times.
Preferably, the pH regulator used for pH regulation in step 4) is calcium hydroxide.
Preferably, the wet volume weight of the slurry in the step 5) is controlled to be 370-3。
Preferably, the curing time in step 6) is 2-4 h.
Preferably, the curing temperature in the step 7) is 60-80 ℃, and the curing time is 10-15 h.
The invention has the beneficial effects that:
1. the ardealite fireproof door core board prepared by the formula and the preparation method has the advantages of sound insulation, heat preservation, fire prevention, light volume weight and the like.
2. The alpha-type phosphogypsum in the formula of the invention takes the industrial by-product phosphogypsum as a raw material, thereby changing waste into valuable, realizing the cyclic utilization of resources, reducing environmental pollution and realizing the green production concept.
3. The polyester fiber and the wood fiber of the components have small specific gravity, excellent heat preservation, heat insulation, sound insulation, insulation and air permeability, uniform thermal expansion, no shell and no cracking; the wood fiber is easy to disperse in the heat insulation material to form a three-dimensional space result, and can absorb moisture 6-8 times of the self weight. The combination and the characteristics improve the workability, the operability and the anti-sliding performance of the material and accelerate the construction speed; the dimension stability and the thermal stability of the wood fiber play a good role in heat preservation and crack resistance in the heat preservation material; the moisture transmission function of the wood fiber ensures that the hydration reaction between the surface of the slurry and the interface of the base layer is sufficient, thereby improving the surface strength of the heat-insulating material, the bonding strength with the base layer and the uniformity of the material strength and enhancing the performance of the door core plate. The fibre presents the cotton shape of cocoon, realize density diversity, make the door core board after the processing is accomplished can see some slight apertures and distribute, these apertures have fine sound absorbing effect, the audio frequency of external production can go deep into inside the material through these slight apertures, take place friction with the material and turn into heat energy with sound energy conversion, thereby reach sheet metal resonance sound absorption, absorb sound energy through the board, simultaneously along with the increase acoustic absorption coefficient crescent of frequency, carry out more powerful absorption to external sound, make the door core board reach and inhale the sound requirement.
4. The redispersible latex powder can be quickly redispersed into emulsion after contacting with water, and the redispersible latex powder has high bonding capability, water resistance, heat insulation property and other properties, so that the performance of the door core plate is improved. The water-proofing agent uses sodium methyl silicate and potassium methyl silicate, has the advantages of good water solubility, low price, convenient use, safety and the like, and absorbs carbon dioxide in the air during curing to carry out crosslinking curing, so that the water resistance and the moisture resistance can not be lost even if the water-proofing agent is contacted with water.
5. The invention uses the expanded foaming micro-bead, so that when the door core plate is heated, the gas pressure in the expanded foaming micro-bead shell is increased and the thermoplastic shell is softened, thereby the volume of the expanded micro-bead is obviously increased, the expanded micro-bead can be expanded for the second time after being heated again, after the expanded micro-bead is completely expanded, the diameter and the volume of the expanded micro-bead can be changed, and the expanded foaming micro-bead is an inflatable closed-cell structure, which is not only beneficial to electric insulation, but also beneficial to heat preservation and heat insulation, so that when a fire disaster occurs, the door core plate can have effective fireproof performance.
6. In the preparation process of the fireproof door core plate, the wet volume weight of the slurry is controlled to be 370-3The problem of the volume weight of the door core plate can be effectively solved, so that the manufactured door core plate is light in volume weight and beneficial to installation operation of door plates by operators. The curing step in the preparation method can improve the tensile strength of the door core plate, increase the bending strength, improve the deformability, increase the compactness of the material, improve the cohesive strength, reduce the water absorption of the material and the like.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The ardealite fireproof door core board comprises the following components in parts by weight: 900 parts of alpha-type phosphogypsum, 64 parts of polyester fiber, 42 parts of redispersible latex powder, 393 parts of expanded foaming microbeads, 136 parts of fly ash microbeads, 2.1 parts of sodium dodecyl sulfate and 3 parts of sodium methyl silicate;
the preparation method comprises the following steps:
1) weighing sodium dodecyl sulfate in the component amount, adding water to dilute by 30 times to obtain foaming liquid;
2) weighing and uniformly mixing the alpha-type phosphogypsum, the polyester fiber, the redispersible latex powder, the expanded foaming microbeads, the fly ash microbeads and the sodium methylsilicate in parts by weight;
3) transferring the foaming liquid obtained by mixing in the step 1) into a foaming agent machine for foaming, and metering the foam volume by using a quantitative container;
4) uniformly mixing the mixture obtained in the step 2), adding the mixture into a stirrer with water injected, stirring, adding calcium hydroxide in the stirring process to adjust the pH value, and adjusting the pH value until the slurry is changed from neutral to alkalescent;
5) adding the foam prepared in the step 3) into the slurry in the step 4) and controlling the wet volume weight of the slurry to be 400kg/m3Stirring and mixing uniformly to obtain slurry, and then adding expanded foaming micro-beads and fly ash micro-beads in component parts;
6) pouring the slurry stirred in the step 5) into a mold which is assembled and coated with a release agent, and curing for 3 hours to obtain the release agent.
7) And (3) after demolding, arranging the demolded materials in the step 6) at intervals, putting the demolded materials into a storage rack, placing the demolded materials into a drying room for drying and curing, wherein the curing temperature is 65 ℃, the curing time is 15, and packaging and leaving the factory after curing.
Example 2
The ardealite fireproof door core board comprises the following components in parts by weight: 850 parts of alpha-type phosphogypsum, 60 parts of polyester fiber, 40 parts of redispersible latex powder, 370 parts of expanded foaming micro-beads, 125 parts of fly ash micro-beads, 2 parts of sodium dodecyl silicate and 3 parts of methyl potassium silicate.
The preparation method comprises the following steps:
1) weighing sodium dodecyl sulfate in component parts, adding water to dilute 25 to obtain foaming liquid;
2) weighing and uniformly mixing the alpha-type phosphogypsum, the polyester fiber, the redispersible latex powder, the expanded foaming microbeads, the fly ash microbeads and the methyl potassium silicate in parts by weight;
3) transferring the foaming liquid obtained by mixing in the step 1) into a foaming agent machine for foaming, and metering the foam volume by using a quantitative container;
4) uniformly mixing the mixture obtained in the step 2), adding the mixture into a stirrer with water injected, stirring, adding calcium hydroxide in the stirring process to adjust the pH value, and adjusting the pH value until the slurry is changed from neutral to alkalescent;
5) adding the foam prepared in the step 3) into the slurry in the step 4) and controlling the wet volume weight of the slurry to be 450kg/m3Stirring and mixing uniformly to obtain slurry, and then adding expanded foaming micro-beads and fly ash micro-beads in component parts;
6) pouring the slurry stirred in the step 5) into a mold which is assembled and coated with a release agent, and demolding after curing for 2 hours.
7) And (3) after demolding, arranging the demolded materials in the step 6) at intervals, putting the demolded materials into a storage rack, placing the demolded materials into a drying room for drying and curing, wherein the curing temperature is 60 ℃, the curing time is 15, and packaging and leaving the factory after curing.
Example 3
The ardealite fireproof door core board comprises the following components in parts by weight: 950 parts of alpha-type phosphogypsum, 70 parts of wood fiber, 45 parts of redispersible latex powder, 413 parts of expanded foaming micro-beads, 144 parts of fly ash micro-beads, 2.3 parts of sodium lauroyl sarcosinate and 3.4 parts of sodium methyl silicate.
The preparation method comprises the following steps:
1) weighing sodium lauroyl sarcosinate with the component amount, adding water to dilute 35 to obtain foaming liquid;
2) weighing and uniformly mixing alpha-type phosphogypsum, wood fiber, redispersible latex powder, expanded foaming microbeads, fly ash microbeads and sodium methylsilicate in parts by weight;
3) transferring the foaming liquid obtained by mixing in the step 1) into a foaming agent machine for foaming, and metering the foam volume by using a quantitative container;
4) uniformly mixing the mixture obtained in the step 2), adding the mixture into a stirrer with water injected, stirring, adding calcium hydroxide in the stirring process to adjust the pH value, and adjusting the pH value until the slurry is changed from neutral to alkalescent;
5) adding the foam prepared in the step 3) into the slurry in the step 4) and controlling the wet volume weight of the slurry to be 370kg/m3Stirring and mixing uniformly to obtain slurry, and then adding expanded foaming micro-beads and fly ash micro-beads in component parts;
6) pouring the slurry stirred in the step 5) into a mold which is assembled and coated with a release agent, and curing for 4 hours to obtain the release agent.
7) And (3) after demolding, arranging the demolded materials in the step 6) at intervals, putting the demolded materials into a storage rack, placing the demolded materials into a drying room for drying and curing, wherein the curing temperature is 80 ℃, the curing time is 10, and packaging and leaving the factory after curing.
Example 4
Preferably, the paint comprises the following components in parts by weight: 880 parts of alpha-type phosphogypsum, 65 parts of polyester fiber, 43 parts of redispersible latex powder, 402 parts of expanded foaming micro-beads, 139 parts of fly ash micro-beads, 2.2 parts of sodium lauroyl sarcosinate and 3.2 parts of methyl potassium silicate.
The preparation method comprises the following steps:
1) weighing sodium lauroyl sarcosinate with component parts, adding water to dilute 30 to obtain foaming liquid;
2) weighing and uniformly mixing the alpha-type phosphogypsum, the polyester fiber, the redispersible latex powder, the expanded foaming microbeads, the fly ash microbeads and the methyl potassium silicate in parts by weight;
3) transferring the foaming liquid obtained by mixing in the step 1) into a foaming agent machine for foaming, and metering the foam volume by using a quantitative container;
4) uniformly mixing the mixture obtained in the step 2), adding the mixture into a stirrer with water injected, stirring, adding calcium hydroxide in the stirring process to adjust the pH value, and adjusting the pH value until the slurry is changed from neutral to alkalescent;
5) adding the foam prepared in the step 3) into the slurry in the step 4) and controlling the wet volume weight of the slurry to be 420kg/m3Stirring and mixing uniformly to obtain slurry, and then adding expanded foaming micro-beads and fly ash micro-beads in component parts;
6) pouring the slurry stirred in the step 5) into a mold which is assembled and coated with a release agent, and demolding after curing for 3.5 hours.
7) And (3) after demolding, arranging the demolded materials in the step 6) at intervals, putting the demolded materials into a storage rack, placing the demolded materials into a drying room for drying and curing, wherein the curing temperature is 75 ℃, the curing time is 11, and packaging and leaving the factory after curing.
Example 5
The paint comprises the following components in parts by weight: 920 parts of alpha-type phosphogypsum, 65 parts of polyester fiber, 43 parts of redispersible latex powder, 402 parts of expanded foaming micro-beads, 139 parts of fly ash micro-beads, 2.2 parts of sodium dodecyl sulfate and 3.2 parts of sodium methyl silicate.
The preparation method comprises the following steps:
1) weighing sodium dodecyl sulfate in component parts, adding water to dilute 25 to obtain foaming liquid;
2) weighing and uniformly mixing the alpha-type phosphogypsum, the polyester fiber, the redispersible latex powder, the expanded foaming microbeads, the fly ash microbeads and the sodium methylsilicate in parts by weight;
3) transferring the foaming liquid obtained by mixing in the step 1) into a foaming agent machine for foaming, and metering the foam volume by using a quantitative container;
4) uniformly mixing the mixture obtained in the step 2), adding the mixture into a stirrer with water injected, stirring, adding calcium hydroxide in the stirring process to adjust the pH value, and adjusting the pH value until the slurry is changed from neutral to alkalescent;
5) adding the foam prepared in the step 3) into the slurry in the step 4) and controlling the wet volume weight of the slurry to be 390kg/m3Stirring and mixing uniformly to obtain slurry, and then adding expanded foaming micro-beads and fly ash micro-beads in component parts;
6) pouring the slurry stirred in the step 5) into a mold which is assembled and coated with a release agent, and curing for 3 hours to obtain the release agent.
7) And (3) after demolding, arranging the demolded materials in the step 6) at intervals, putting the demolded materials into a storage rack, placing the demolded materials into a drying room for drying and curing, wherein the curing temperature is 75 ℃, the curing time is 14, and packaging and leaving the factory after curing.
To prove the beneficial effects of the invention, 3 door core plates are respectively selected from the above embodiments 1-5 to perform the combustion performance test, and the detection standard is executed according to the building material and product combustion performance grading (GB/T8624-. The results are shown in table 1:
TABLE 1 ardealite fire door core board combustion performance
| Item | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Grade of combustion performance | A1 | A1 | A1 | A1 | A1 |
| Grade of smoke toxicity | AQ1 | AQ1 | AQ1 | AQ1 | AQ1 |
The results in Table 1 show that the combustion performance grade of the phosphogypsum door core board prepared by the invention reaches B1Grade, smoke toxicity reaches AQ1The ardealite door core plate has strong fire resistance and high safety factor, can effectively prevent fire spreading in the using process, has low smoke concentration even after burning, and avoids the suffocation of dense smoke inhaled by a human body.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The ardealite fireproof door core board is characterized by comprising the following components in parts by weight: 850-950 parts of alpha-type phosphogypsum, 60-70 parts of fiber, 40-45 parts of redispersible latex powder, 370-413 parts of expanded foaming micro-beads, 125-144 parts of fly ash micro-beads, 2-2.3 parts of foaming agent and 3-3.4 parts of waterproof agent.
2. The ardealite fireproof door core board is characterized by comprising the following components in parts by weight: 920 parts of alpha-type ardealite 880-containing organic silicon-inorganic composite material, 62-65 parts of fiber, 41-43 parts of redispersible latex powder, 384-containing expanded foaming micro-beads 402, 139 parts of fly ash micro-beads 133-containing organic silicon-inorganic composite material, 2.1-2.2 parts of foaming agent and 3.1-3.2 parts of waterproof agent.
3. The ardealite fireproof door core board is characterized by comprising the following components in parts by weight: 900 parts of alpha-type phosphogypsum, 64 parts of fiber, 42 parts of redispersible latex powder, 393 parts of expanded foaming micro-beads, 136 parts of fly ash micro-beads, 2.1 parts of foaming agent and 3 parts of waterproofing agent.
4. A phosphogypsum fire door core board according to any of claims 1-3, characterised in that the fibres are polyester fibres or wood fibres.
5. A phosphogypsum fire door core board according to any one of claims 1 to 3, characterised in that the waterproofing agent comprises sodium methyl silicate or potassium methyl silicate.
6. A phosphogypsum fire door core board according to any one of claims 1-3, characterised in that the foaming agent comprises any one of sodium lauroyl sarcosinate, sodium dodecyl sulphate and foaming glue.
7. The preparation method of the ardealite fire door core board according to any one of claims 1 to 6, characterized by comprising the following steps:
1) weighing foaming agents in component parts, and mixing the foaming agents with water to obtain a foaming liquid;
2) weighing alpha-type phosphogypsum, fibers, redispersible latex powder and a waterproof agent according to the component parts, and uniformly mixing;
3) transferring the foaming liquid obtained by mixing in the step 1) into a foaming agent machine for foaming, and metering the foam volume by using a quantitative container;
4) uniformly mixing the mixture obtained in the step 2), adding the mixture into a stirrer into which water is injected, stirring, and adjusting the pH value in the stirring process to obtain slurry;
5) adding the foam obtained in the step 3) into the slurry obtained in the step 4), uniformly stirring and mixing to obtain slurry, and then adding expanded foaming microbeads and fly ash microbeads in parts by weight;
6) pouring the slurry stirred in the step 5) into a mold which is assembled and coated with a release agent, and demolding after curing.
7) And (4) after demolding, arranging the demolded materials in the step 6) at intervals, putting the demolded materials into a storage rack, and placing the demolded materials into a drying room for drying and curing, and then packaging and leaving a factory.
8. The method for preparing the ardealite fireproof door core plate according to claim 7, wherein the wet volume weight of the slurry in the step 5) is controlled to be 370-450kg/m3。
9. The preparation method of the phosphogypsum fire door core board according to claim 7, wherein the curing time in the step 6) is 2-4 h.
10. The preparation method of the ardealite fireproof door core plate according to claim 7, wherein the curing temperature in the step 7) is 60-80 ℃, and the curing time is 10-15 hours.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115448682A (en) * | 2022-08-18 | 2022-12-09 | 浙江慧泽科技发展有限公司 | Phosphogypsum fireproof door core material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103626458A (en) * | 2012-08-22 | 2014-03-12 | 北京建筑材料科学研究总院有限公司 | Preparation method for lightweight gypsum-based fireproof door core board |
| CN104311113A (en) * | 2014-10-15 | 2015-01-28 | 公安部天津消防研究所 | Fireproof door core plate sheet material and preparation method thereof |
| CN108484066A (en) * | 2018-04-09 | 2018-09-04 | 合肥聪亨新型建材科技有限公司 | A kind of wall thermal insulation fire-proof thermal insulation material and preparation method thereof |
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2021
- 2021-12-31 CN CN202111680555.1A patent/CN114315298A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103626458A (en) * | 2012-08-22 | 2014-03-12 | 北京建筑材料科学研究总院有限公司 | Preparation method for lightweight gypsum-based fireproof door core board |
| CN104311113A (en) * | 2014-10-15 | 2015-01-28 | 公安部天津消防研究所 | Fireproof door core plate sheet material and preparation method thereof |
| CN108484066A (en) * | 2018-04-09 | 2018-09-04 | 合肥聪亨新型建材科技有限公司 | A kind of wall thermal insulation fire-proof thermal insulation material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115448682A (en) * | 2022-08-18 | 2022-12-09 | 浙江慧泽科技发展有限公司 | Phosphogypsum fireproof door core material and preparation method thereof |
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