CN108503324A - Modified anti-fire door core board and production method - Google Patents
Modified anti-fire door core board and production method Download PDFInfo
- Publication number
- CN108503324A CN108503324A CN201810439781.2A CN201810439781A CN108503324A CN 108503324 A CN108503324 A CN 108503324A CN 201810439781 A CN201810439781 A CN 201810439781A CN 108503324 A CN108503324 A CN 108503324A
- Authority
- CN
- China
- Prior art keywords
- parts
- agent
- door core
- core board
- fire door
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- 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
-
- 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
- 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
Abstract
The invention discloses a kind of modified anti-fire door core board and production method, modified sulphur magnesium anti-fire door core board, it is characterized in that：Including magnesia, magnesium sulfate, foaming reinforcing agent, modifying agent, accelerating agent, polypropylene fibre, each composition matches in parts by weight is：140 160 parts of magnesia, 90 110 parts of magnesium sulfate, foam 2 2.5 parts of reinforcing agent, 46 parts of modifying agent, 1.5 2 parts of accelerating agent, 1.2 1.8 parts of polypropylene fibre；The foaming reinforcing agent is magnesium oxysulfide water resistant reinforcing agent；The modifying agent is one or more of oxalic acid, citric acid, lactic acid mixture；The accelerating agent is bioprotein.After adopting the above scheme, have many advantages, such as that simple production process, production and processing are convenient, unit weight is light, high mechanical strength, fire protecting performance are good, weatherability is strong, production cost is low, three-waste free discharge, resource utilization are high, energy conservation and environmental protection, can be widely applied to building field and fire resistant doorsets industry.
Description
Technical field
The invention is related to fireproof material technology field, modification fire resistant doorsets of especially a kind of use on fire resistant doorsets
Core plate and production method.
Background technology
The intensity of a fire how is obstructed in the field of construction, the fire spread time is delayed to be escape from fire and fire fighting and rescue primary study
Project, especially in densely populated residential quarter or the public place of large size, if can be in regular hour internal resistance fire insulation gesture
Sprawling, can not only reduce the number of casualties, can more reduce property loss, reduce the harm of fire to greatest extent.Fire resistant doorsets are
One of generally acknowledged important fire prevention link is usually used in door, fire wall opening, staircase entrance, evacu-ation walk, the pipe of building
On road well head etc..It can play the role of preventing fire spread when fire occurs and prevent fire smoke from flowing, be to ensure people
The door of the life of people's security of the lives and property.
The quality of fire resistant doorsets fire resistance is mainly reflected in the selection of fire-resistant door core material, and tradition is prevented using more
Vent core plate plate is mainly the following：Aluminium silicate wool door panel, expanded perlite door panel, magnesite foaming door panel.Silicic acid
Aluminum wool door panel is prohibited use since national standard is not achieved in its flue gas toxity index.Expanded perlite door core
Plate is due to the intensity difference of perlite itself, and after being bonded with steel plate or multi-layer board, the machining deformation of sheet metal, heat deform, and
The factors such as collision deformation are easy to cause anti-fire door core board fragmentation, to influence the overall performance of fire resistant doorsets.Multi-layer board and perlite
After manufactured core material plate bonds, in transport, installation process, by external force collision it is easy that core material plate is made to rupture, when fire occurs,
When the multi-layer board afterburnt, fire resistant doorsets, which just voluntarily fall apart, loses fireproofing function, at present also by market.Magnesite foaming door panel be
Fire-retardant fireproof insulating product of new generation mainly uses natural chlorine oxygen magnesium inorganic environment-friendly material, adds through the compacting of mechanical continuous productive process
Work forms.It has it is non-ignitable not quick-fried, it is Waterproofing/oilproofing, resistant to chemical etching, the features such as nontoxic and high mechanical strength.But there is also
Problems with：In magnesite material ingredient contain a large amount of halide ions, halide ion easily occur in the environment of hot humid the moisture absorption,
Easily there is " anti-halogen " phenomenon, corrodes door-plate and frame material, greatly shorten the service life of fire resistant doorsets.It is asked to solve this
Topic, many manufacturers attempt to replace magnesium chloride with magnesium sulfate, but the fire resistant doorsets for only with magnesium sulfate replacing magnesium chloride to produce
Core plate intensity is very low, is unable to meet production the needs of application.
In view of the above-mentioned problems, many manufacturers and knowledgeable people are researched and developed, but not yet find so far compared with
Rational solution.
Invention content
Above-mentioned to solve the problems, such as, the purpose of the invention is to provide a kind of simple production process, production and processing
Convenience, high mechanical strength, fire protecting performance are good, weatherability is strong, production cost is low, energy-saving and environment-friendly modified anti-fire door core board and making
Method.
The invention solves technical solution used by its technical problem, and it includes oxidation that the present invention, which is modified anti-fire door core board,
Magnesium, magnesium sulfate, foaming reinforcing agent, modifying agent, accelerating agent, polypropylene fibre, each composition matches in parts by weight is：Magnesia
140-160 parts, 90-110 parts of magnesium sulfate, foam 2-2.5 parts of reinforcing agent, 4-6 parts of modifying agent, 1.5-2 parts of accelerating agent, and polypropylene is fine
1.2-1.8 parts of dimension makes modified anti-fire door core board be free of chlorine element, high-temp resisting high-humidity resisting, so as to avoid existing magnesite foamed fireproofing
The moisture absorption easily occurs when door panel high temperature, returns halogen phenomenon.
The foaming reinforcing agent is magnesium oxysulfide water resistant reinforcing agent, and the magnesium oxysulfide water resistant reinforcing agent includes silicon ash, organic
Silicon waterproofing agent powder, sucrose, humic acid can bond to form entirety with other components, and collaboration is played between each component and is made
With assigning modified anti-fire door core board has higher flexural strength and structural stability and fire protecting performance, can improve product
Resistance to compression, anti-folding, impervious, anti-corrosion, shock resistance and wear-resisting property.
The modifying agent, which is one or more of oxalic acid, citric acid, lactic acid mixture, modifying agent, can effectively inhibit sulphur
The content of sour magnesium conversion Mg (OH) 2 phase, ensures the content of 5Mg (OH) 2MgSO47H2O phases of high intensity, to make modification
The flexural strength of anti-fire door core board significantly improves.
The accelerating agent is bioprotein, foam can be kept to stablize, and ensures modified anti-fire door core board even density.
Contain a large amount of polypropylene fibre in fire-resistant door core component, can effectively disperse modified fire-resistant door core in practical application
The stress of plate avoids the broken of fire-resistant door core plank.
The production method that the present invention is modified anti-fire door core board, it includes the following steps：
(1), 140-160 parts of magnesia is weighed, 90-110 parts of magnesium sulfate, foam 2-2.5 parts of reinforcing agent, and 4-6 parts of modifying agent promotes
1.5-2 parts of agent, 1.2-1.8 parts of polypropylene fibre；
(2), magnesia, magnesium sulfate, modifying agent, accelerating agent, the polypropylene fibre weighed in step (1) is added in stirring container
And 100 parts of water, uniform stirring is carried out in stirring container, obtains mixed slurry；
(3), the water of foaming reinforcing agent 40 times of ratios of addition in step (1) foaming is carried out to handle to obtain foaming mixed liquor；
(4), step (3) foaming mixed liquor obtained is added in stirring container and is filled with the mixed slurry of step (2)
Divide stirring, paste is made and is modified anti-fire door core board slurry；
(5), paste made from step (4) is modified anti-fire door core board slurry head and die for molding is added；It finally carries out being molded solid
Change forming processes, you can obtain product crude green body, finished product then is become to product crude green body processing of cutting, finished product can pack manufacture.
After adopting the above technical scheme, having the advantage that compared with the prior art and effect：First, making modified fire-resistant door core
Plate be free of chlorine element, high-temp resisting high-humidity resisting, to solve easily occur when existing magnesite foamed fireproofing door panel high temperature damp suction surface halide accumulation,
The short problem of service life.Second is that can effectively inhibit magnesium sulfate to convert the content of Mg (OH) 2 phase by modifying agent, ensure high intensity
5Mg (OH) 2MgSO47H2O phases content, to make the flexural strength of modified anti-fire door core board significantly improve.Third, logical
Crossing foaming reinforcing agent can bond to form entirety with other components, play synergistic effect between each component, product air holes uniformly,
Compactness is good, and assigning modified anti-fire door core board has higher flexural strength and structural stability and fire protecting performance, can improve
The resistance to compression of product, anti-folding, impervious, anti-corrosion, shock resistance and wear-resisting property.Fourth, can effectively disperse reality by polypropylene fibre
The stress of modified anti-fire door core board, improves the mechanical performance of fire-resistant door core plank in.Fifth, simple production process, to equipment
It is required that it is low, it easily mass produces and promotes, waste material is reusable, three-waste free discharge, and resource utilization is high, energy conservation and environmental protection.
Sixth, fire protecting performance is excellent, stable structure, intensity is high, can be widely applied to fire-proof wooden door, fire resistance steel door, antitheft door, prevents
It forces open the door, on entering house door, art and craft door.Seventh, high mechanical strength, fire protecting performance fire, combustibility can reach national A grades of standard.
Specific implementation mode
The modification anti-fire door core board and production method of the invention are further illustrated with reference to specific embodiment.
Present invention modification anti-fire door core board includes magnesia, magnesium sulfate, foam reinforcing agent, modifying agent, accelerating agent, polypropylene fibre, respectively
Composition matches in parts by weight：140-160 parts of magnesia, 90-110 parts of magnesium sulfate, foam 2-2.5 parts of reinforcing agent, modifying agent
4-6 parts, 1.5-2 parts of accelerating agent, 1.2-1.8 parts of polypropylene fibre makes modified anti-fire door core board be free of chlorine element, and high temperature resistant is high
It is wet, the moisture absorption easily occurs when so as to avoid existing magnesite foamed fireproofing door panel high temperature, returns halogen phenomenon.
The foaming reinforcing agent is magnesium oxysulfide water resistant reinforcing agent, and the magnesium oxysulfide water resistant reinforcing agent includes silicon ash, organic
Silicon waterproofing agent powder, sucrose, humic acid can bond to form entirety with other components, and collaboration is played between each component and is made
With assigning modified anti-fire door core board has higher flexural strength and structural stability and fire protecting performance, can improve product
Resistance to compression, anti-folding, impervious, anti-corrosion, shock resistance and wear-resisting property.
The modifying agent, which is one or more of oxalic acid, citric acid, lactic acid mixture, modifying agent, can effectively inhibit sulphur
The content of sour magnesium conversion Mg (OH) 2 phase, ensures the content of 5Mg (OH) 2MgSO47H2O phases of high intensity, to make modification
The flexural strength of anti-fire door core board significantly improves.
The accelerating agent is bioprotein, foam can be kept to stablize, and ensures modified anti-fire door core board even density.
Contain a large amount of polypropylene fibre in fire-resistant door core component, can effectively disperse modified fire-resistant door core in practical application
The stress of plate avoids the broken of fire-resistant door core plank.
The production method that this hair inhales modified anti-fire door core board, it includes the following steps：
(1), 140-160 parts of magnesia is weighed, 90-110 parts of magnesium sulfate, foam 2-2.5 parts of reinforcing agent, and 4-6 parts of modifying agent promotes
1.5-2 parts of agent, 1.2-1.8 parts of polypropylene fibre；
(2), magnesia, magnesium sulfate, modifying agent, accelerating agent, the polypropylene fibre weighed in step (1) is added in stirring container
And 100 parts of water, uniform stirring is carried out in stirring container, obtains mixed slurry；
(3), the water of foaming reinforcing agent 40 times of ratios of addition in step (1) foaming is carried out to handle to obtain foaming mixed liquor；
(4), step (3) foaming mixed liquor obtained is added in stirring container and is filled with the mixed slurry of step (2)
Divide stirring, paste is made and is modified anti-fire door core board slurry；
(5), paste made from step (4) is modified anti-fire door core board slurry head and die for molding is added；It finally carries out being molded solid
Change forming processes, you can obtain product crude green body, finished product then is become to product crude green body processing of cutting, finished product can pack manufacture.
Further the invention is illustrated with reference to specific embodiment.Embodiment 1：Each composition presses following weight
It is matched：140 parts of magnesia is weighed, 110 parts of magnesium sulfate, foam 2 parts of reinforcing agent, 6 parts of modifying agent, 1.5 parts of accelerating agent, and poly- third
1.8 parts of alkene fiber, is produced by above-mentioned manufacturing method, and 2050mm × 1000mm × 50mm fire-proof boards are made.
Embodiment 2：Each composition is matched by following weight：Weigh 150 parts of magnesia, 100 parts of magnesium sulfate, foaming enhancing
2.2 parts of agent, 5 parts of modifying agent, 1.8 parts of accelerating agent, 1.5 parts of polypropylene fibre are produced by above-mentioned manufacturing method, are made
2050mm × 1000mm × 50mm fire-proof boards.
Embodiment 3：Each composition is matched by following weight：Weigh 160 parts of magnesia, 90 parts of magnesium sulfate, foaming enhancing
2.5 parts of agent, 4 parts of modifying agent, 2 parts of accelerating agent, 1.2 parts of polypropylene fibre are produced by above-mentioned manufacturing method, 2050mm are made
× 1000mm × 50mm fire-proof boards.
After tested, which is 280-320kg/ m3, resistance to compression to modification anti-fire door core board in above-described embodiment 1~3
Intensity is 1.8Mpa, and flexural strength reaches 1-1.5Mpa, and combustibility reaches A grades of standards.
The above, only one embodiment of the invention, not makes in any form the invention
Limitation, on the basis of not departing from the technical solution of the invention, made simple modification, equivalent variations or modification are fallen
Enter the protection domain of the invention.
Claims (5)
1. a kind of modified anti-fire door core board, it is characterized in that：Including magnesia, magnesium sulfate, foaming reinforcing agent, modifying agent, accelerating agent,
Polypropylene fibre, each composition matches in parts by weight is：140-160 parts of magnesia, 90-110 parts of magnesium sulfate, foaming reinforcing agent 2-
2.5 parts, 4-6 parts of modifying agent, 1.5-2 parts of accelerating agent, 1.2-1.8 parts of polypropylene fibre.
2. modified anti-fire door core board according to claim 1, it is characterized in that：The foaming reinforcing agent is magnesium oxysulfide water resistant
Reinforcing agent, the magnesium oxysulfide water resistant reinforcing agent include silicon ash, waterproofing agent of organosilicon powder, sucrose, humic acid, can improve product
Resistance to compression, anti-folding, impervious, anti-corrosion, shock resistance and wear-resisting property.
3. modified anti-fire door core board according to claim 1, it is characterized in that：The modifying agent is oxalic acid, citric acid, breast
One or more of acid mixture can effectively inhibit the content of magnesium sulfate conversion Mg (OH) 2 phase, ensure the 5Mg of high intensity
(OH) content of 2MgSO47H2O phases.
4. modified anti-fire door core board according to claim 1, it is characterized in that：The accelerating agent is bioprotein, is kept
Foam is stablized.
5. a kind of production method preparing any one of Claims 1-4 modified anti-fire door core board, it is characterized in that：It includes
Following steps：
(1), 140-160 parts of magnesia is weighed, 90-110 parts of magnesium sulfate, foam 2-2.5 parts of reinforcing agent, and 4-6 parts of modifying agent promotes
1.5-2 parts of agent, 1.2-1.8 parts of polypropylene fibre；
(2), magnesia, magnesium sulfate, modifying agent, accelerating agent, the polypropylene fibre weighed in step (1) is added in stirring container
And 100 parts of water, uniform stirring is carried out in stirring container, obtains mixed slurry；
(3), the water of foaming reinforcing agent 40 times of ratios of addition in step (1) foaming is carried out to handle to obtain foaming mixed liquor；
(4), step (3) foaming mixed liquor obtained is added in stirring container and is filled with the mixed slurry of step (2)
Divide stirring, paste is made and is modified anti-fire door core board slurry；
(5), paste made from step (4) is modified anti-fire door core board slurry head and die for molding is added；It finally carries out being molded solid
Change forming processes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810439781.2A CN108503324A (en) | 2018-05-09 | 2018-05-09 | Modified anti-fire door core board and production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810439781.2A CN108503324A (en) | 2018-05-09 | 2018-05-09 | Modified anti-fire door core board and production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108503324A true CN108503324A (en) | 2018-09-07 |
Family
ID=63400157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810439781.2A Pending CN108503324A (en) | 2018-05-09 | 2018-05-09 | Modified anti-fire door core board and production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108503324A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111039653A (en) * | 2019-12-15 | 2020-04-21 | 福建省恒业金属门窗制造有限公司 | Preparation method of fireproof door core plate |
| CN111153673A (en) * | 2019-12-15 | 2020-05-15 | 福建省恒业金属门窗制造有限公司 | Fireproof door core plate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3832287C1 (en) * | 1988-09-22 | 1989-09-21 | Duraplan Industriefussboeden Richard Boehl, 7000 Stuttgart, De | Magnesia cement mixture |
| JPH10330148A (en) * | 1997-05-27 | 1998-12-15 | Railway Technical Res Inst | Sea water-resistant hydraulic composition |
| CN104030724A (en) * | 2014-06-06 | 2014-09-10 | 山东省建筑科学研究院 | Sulfur-oxygen-magnesium gelling material fire door core board and manufacture method thereof |
| CN106431172A (en) * | 2016-09-05 | 2017-02-22 | 深圳国汇新材料有限公司 | Modified-sulphur-magnesium fireproof door core board and preparing method and application thereof |
| CN107082617A (en) * | 2017-06-21 | 2017-08-22 | 合肥市旺友门窗有限公司 | A kind of fire-resistant door core and preparation method thereof |
-
2018
- 2018-05-09 CN CN201810439781.2A patent/CN108503324A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3832287C1 (en) * | 1988-09-22 | 1989-09-21 | Duraplan Industriefussboeden Richard Boehl, 7000 Stuttgart, De | Magnesia cement mixture |
| JPH10330148A (en) * | 1997-05-27 | 1998-12-15 | Railway Technical Res Inst | Sea water-resistant hydraulic composition |
| CN104030724A (en) * | 2014-06-06 | 2014-09-10 | 山东省建筑科学研究院 | Sulfur-oxygen-magnesium gelling material fire door core board and manufacture method thereof |
| CN106431172A (en) * | 2016-09-05 | 2017-02-22 | 深圳国汇新材料有限公司 | Modified-sulphur-magnesium fireproof door core board and preparing method and application thereof |
| CN107082617A (en) * | 2017-06-21 | 2017-08-22 | 合肥市旺友门窗有限公司 | A kind of fire-resistant door core and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111039653A (en) * | 2019-12-15 | 2020-04-21 | 福建省恒业金属门窗制造有限公司 | Preparation method of fireproof door core plate |
| CN111153673A (en) * | 2019-12-15 | 2020-05-15 | 福建省恒业金属门窗制造有限公司 | Fireproof door core plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104016624B (en) | High-strength low-density flame retardant inorganic wall heat insulation material and preparation method thereof | |
| CN106396596A (en) | Inorganic fireproof sheets and production method therefor | |
| CN103964792B (en) | A kind of preparation method of resin/cementitious composite light weight board | |
| CN106699052A (en) | Thick-type steel structure fireproof coating and preparation method thereof | |
| CN102826817A (en) | Fly-ash fiber outer wall heat-insulation board and preparation method thereof | |
| CN106431172B (en) | Modified sulphur magnesium anti-fire door core board and the preparation method and application thereof | |
| CN103771802A (en) | Environment-friendly and energy-saving type level-A fireproof insulating high-strength plate for molding foam and preparation method thereof | |
| CN108503324A (en) | Modified anti-fire door core board and production method | |
| CN109574618A (en) | Modified magnesite anti-fire door core board and the preparation method and application thereof | |
| CN201695894U (en) | Foam fireproof door core plate | |
| CN106747212A (en) | Fireproof heat insulating board for exterior walls | |
| CN105863083A (en) | Inorganic thermal insulating wall | |
| CN111268999A (en) | Special PLASTIC LAMINATED in tunnel top | |
| CN101775882A (en) | Environment protective and flame retardant decorative material and preparation process thereof | |
| CN103568442B (en) | A kind of vermiculite base sandwich structure does not fire plate and preparation method thereof | |
| CN109177362A (en) | A kind of fire prevention laminated particle-board and preparation method thereof | |
| CN102976678A (en) | Partition board material | |
| CN103172345A (en) | Light refractory sound-insulation insulation board and preparation method thereof | |
| CN103387362B (en) | Flame-retardant polymer cement paper and preparation method thereof | |
| CN105735500A (en) | Non-woven silicon-aluminum aerogel compound sandwich insulating fireproof board | |
| CN105948693B (en) | Anti-fire door core board and the preparation method and application thereof | |
| CN111825414A (en) | High-temperature-resistant green multi-layer fireproof plate and manufacturing method thereof | |
| CN104402509A (en) | Perlite fireproof door core board and preparation method thereof | |
| CN218492846U (en) | Combined ALC wallboard with heat insulation function | |
| CN104556923A (en) | Flame-retardant and aging-resistant composite heat-preservation material, as well as preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180907 |